World Bank Loan Project Environment Management Program (EMP) of Urban

Centralized Heating Supply Engineering (Heating Supply Plant) for Ling Yuan City

凌 源 市 城 市 集 中 供 热 工 程 （ 热 源厂 ）

世 行 贷 款 项 目 环 境 管 理 计 划（ EMP ）

E1714 V16 REV

Prepared by: Environment Science Academy of Chaoyang City

November. 2013

CONTENTS 1 INTRODUCTION ……..………………………………………………………2

1.1 PROJECT BACKGROUND........................................................................21.2 NAME, NATURE AND LOCATION OF THE PROJECT.................................31.3 CONSTRUCTION ITEMS OF THE PROJECT................................................3

2 BASIS OF COMPILATION……………………………………………………...4

2.1 EXECUTIVE STANDARD...........................................................................42.2 BASIS OF COMPILATION........................................................................5

3 ． POLLUTANT

DISCHARGE…………………………………………………….63.1 WASTE WATER.......................................................................................63.2 SOLID WASTE..........................................................................................63.3 REPLACEMENT OF POLLUTANT DISCHARGE AND AREA POLLUTANT INCREASE/DECREASE SITUATION..................................................................6

4 ANALYSIS OF ENVIRONMENT IMPACT……………………………………. 7

4.1 CURRENT ENVIRONMENT QUALITY......................................................74.2ANALYSIS OF ENVIRONMENT IMPACT IN OPERATION PERIOD..................74.3 ANALYSIS OF ENVIRONMENT IMPACT IN CONSTRUCTION.....................8

5 RELIEVING MEASURES FOR ENVIRONMENT IMPACT ………………………… 96 ORGANIZATION ARRANGEMENT……………………………………………. 137. MORNITORING SCHEDULE…………………………………………………. 148 REPORT POLICY………………………………………………………… 16

8.1MORNITOR REPORT..............................................................................168.2 RECORDAND EMP OPERATION YEARLY REPORT.................................17

9 TRAINING SCHEDULE……………………………………………………..18

10 PUBLIC INVOLVEMENT IN THE IMPLEMENTATION OF THE PROJECT………… 18

10.1 PUBLIC PARTICIPATION PLAN............................................................1810.2 DISPUTE AND COMPLAIN CHANNEL...................................................19

11 COST OF IMPLEMENTING THE MANAGEMENT PLAN……………………… 20

1 Introduction

1.1 Project Background

Ling Yuan City is located in the western border of Liaoning Province. Connecting to the north are Jian Ping County and Ning Cheng County, Inner Mongolia, to the northeast and east is Kazuo county, to the west and northwest is Ping Quan County of Hebei Province, to the southwest connects with Kuan Cheng County and Pingquan County of Hebei Province, to the south is connected with Jian Chang County and Qing Long County in Hebei Province, to the southeast is connected with Jianchang and Kazuo the two counties. The Geographical coordinates of Ling Yuan City is northern latitude 40° 35'50"~ 41° 26'6", east longitude 118°50'20"~ 119°37'40". The north and south inclined length

is 93.3 kilometers long. The east and west width is 66.1 km, accounts for about 2.2% of the total area of the whole Province.

The heating supply facility of Hong Ling Thermo Power Plant, the main heating resource of Ling Yuan City, has been in operation for many years and out of repair. The service of heating supply can’t guarantee a normal operation for the past few years. The effect of heating supply from Hong Ling Power Plant is from bad to worse. In winter, the temperature in the most household is only about 12℃ and under 15℃ to the maximum. People’s complains are heard everywhere with lots of unsatisfactory which influenced the people’s livelihood of Ling Yuan City.

And the urban construction area has been increasing with the continuing development of Ling Yuan City construction. The heating supply facility of Hong Ling Thermo Power Plant is aged that can’t satisfy the increasing demand. New heating supply plant shall be urgently located and constructed somewhere at the circumference of Ling Yuan city center area as well as to construct heating supply piping network.

Ling Yuan Antai Heating Supply Limited Liability Company was established in 2011 by the investment from municipal government with a main purpose of basically solving the heating supply problem in Ling Yuan City. After the establishment, Antai Heating Supply Company rented Hong Ling Thermal Power Plant to provide heating to the city. From July 2011, a heating source plant was built at the location of the old stadium of Ling Yuan City and to implement urban centralized heating supply in Ling Yuan City. The project can remove 25 small boiler houses and improving an area of 3.75 million square meters of heating supply condition, finally to realize centralized heating supply capacity of 7 million m2. The total heating supply design capability of the heating source plant is 2 x 29MW and 3 x 70MW, 5 hot water boilers. The project is divided into two phases. The first phase of a 2x29MW reciprocating grate boiler is already in production in November 2011 and the second phase of 3 x 70MW reciprocating grate boiler shall be in operation from 2013 to 1015 according to the continuous expansion conditions of the urban heating supply areas.

At present, most of the buildings in Ling Yuan City are heating supplied by dispersed small and medium-sized boiler houses which are low efficient in heating supply with more chimneys. Most of the dust removal equipment is ceramic multi-tube dust cleaners with low efficient dust removal and without desulfurization function. It is heavily polluted. Those boiler houses intermittently provide heating supply wasting lots of energy. It not only causes heavy pollution to the urban environment and increases the transportation of coal, ash and slag amount which imposes pressure to the municipal traffic and pollution from the transport vehicle emission, but also it occupies a lot of land and urban green areas for construction which seriously affects the city landscape and environmental quality of Ling Yuan City.

In the presence of the above-mentioned problems, the construction of thermo power co-generation heating supply or large heating source plant for central heating supply to replace the dispersed heating boiler houses is the inevitable

choice for the development of the city. After the implementation of this project, the paid heating source from the plant for centralized heating supply can replace the dispersed small coal-fired boiler houses, It can greatly improve heating efficiency and save energy, to reduce land occupation and solve problems of pipeline corrosion by unsatisfied water quality requirements, to limit water leakage rate in the reasonable range, to reduce dust, SO2, NOx, CO2 emissions. At the same time it also reduces the quantity of coal, slag transportation, traffic pressure and automobile exhaust. Thus it can improve the urban environment conditions.

1.2 Name, nature and location of the projectProject name：Centralized heating supply engineering project of Ling Yuan

City

Location of construction：Planning area of Ling Yuan City

Nature of construction：New construction

1.3 Construction items of the project The area of the engineering project includes 31.03 km of the first-class heating water network and 57 heating exchanger stations, out of which 23 stations were modified from the old heat-exchange stations, 31 newly-built stations and 3 new building heating supply stations within the urban overall plan boundary of the east of Hong Shan Road (101 National Highway) in Ling Yuan city, west of Gao-Lian route, south of Ling Gang steel, and north of Dalinghe River. Ling Yuan Xin-xing complex building, 37213㎡, is selected as the building heating supply exchange station test point as the heat meter (building meter)installation area. The environment protection equipment of Antai Lingbei Thermo Power plant and Antai Heating Source plant shall be up-grade constructed. This project can realize a 7 million square meters of central heating supply area including the current heating supply area of 3.75 million square meters.

The total investment of the project is 252 million yuan of which $20 million (about 131.05 million yuan) will be financiered from the World Bank loan.

Antai Heating Source Plant: The first phase of a 2 x 29MW reciprocating grate boiler is already in production in November 2011 and the second phase of 3 x 70MW reciprocating grate boilers shall be in production in November 2013 See coal quality analyses report in Table 1-1.

Table 1-1 Coal Quality Analyses Report

NameIndustrial analyses Element analyses

water%

Ash%

Volatile%

Heating valueKJ/Kg

sulfur%

Carbon %

Hydrogen%

Oxygen%

Nitrogen%

Coal sample 21.6

29.34

25.44 16030 0.43 48.55 2.86 10.5 0.5

LingYuan Antai Heating Co., Ltd. has 2 x 29MW boilers with two sets of water mill dust removing environmental protection equipment, the dust removal efficiency is 90%, desulfurization efficiency is 0. Flue gas discharge status monitoring results are: smoke/dust 942mg/m3，SO21250mg/m3. No on-site monitoring.

Wastewater is all discharged into Ling Yuan City sewage treatment plant, ash suitable for brick admixture, and can be used in brick-making, make cement, road construction, etc. Desulfurization slag is suitable for gypsum board. The construction company has already signed agreements with Ling Yuan City Jinchuan Building Materials Co., Ltd. and Ling Yuan City Wafangdian County Xin Xin Building Materials Plant for comprehensive sulfurization utilization of ash and slag.

Antai Lingbei Heating Source Plant: Antai Lingbei Heating Source Plant was named before as of Ling Yuan Hong Ling Thermal Power Plant of Liaoning Province which was established in 1959 with 4 x 10 t/h steam supply boiler and 4 sets of 1500kw condensing steam turbine generators, self-provided power plant, under the management of Ling Yuan Prison Management Bureau. The facilities were scraped in 1982 and 2001 respectively. 2 new sets of 20t/h steam boilers and 2 units of 3000kw condensing steam turbine generators were set up in 1989. In 1997, the enterprise made technology modifications to the 2 units of 3000kw steam turbine generators with low vacuum operation circulating water heating supply; In 2001, aiming at the advantageous of a new round synchronous growth of technical transformation of Ling Yuan prison management branch enterprises with Ling Yuan City big promotion of urban transformation, power load, heating supply load development, 1 x 35 t/h steam boiler was constructed as extension; On August 6, 2003, with the project approval of Liaoning Planning Commission, new expansion of 2 x 75t/h circulating flowing bed boilers. In September 2003, “Environmental impact report of Ling Yuan Hong Ling Thermal Power Plant, Phase II expansion project" prepared by Environmental Science Research Institute of Liaoning Province, was reviewed and approved by Liaoning Provincial Environmental Protection Bureau in February 4, 2004. The total boiler tonnage of the plant is 225t/h, including 2 x 75t/h boilers, 1 x 35t/h boiler, 2x20t/h boilers, of which are all circulating fluidized bed boilers. After operation of the 2 x 75t/h boilers, 1x 35t/h and 2 x 20 t/h boilers shall stop operation. See the coal quality analysis report in table 1-1. As for Antai Lingbei Heating Source Plant, the 2 x 75t/h boilers are currently equipped with two sets of electric precipitation environmental protection equipment. The dust removal efficiency is 91%, desulfurization efficiency is 0. Flue gas discharge status monitoring results for: smoke is 2927.2 mg/m3，SO21512.75 mg/m3. In 2008, on-line monitoring system is installed. The flue gas emission of the two heating source plants is over the permissible standard. Environmental protection facilities are urgently needed for modification.

Waste water is all discharged into Ling Yuan City sewage treatment plant,

ash suitable for brick admixture, and can be used in brick-making, make cement, road construction, etc. Desulfurization slag is suitable for gypsum board. The construction company has already signed agreements with Ling Yuan City Jinchuan Building Materials Co., Ltd. and Ling Yuan City Wafangdian County Xin Xin Building Materials Plant for comprehensive sulfurization utilization of ash and slag. See the construction items of the project in Table 1-2

Table 1-2 Engineering project items and scale

Construction Items Plant Equipment Notice

Antai Lingbei heating source plant increases desulfurization device; Antai heating source plant uses wet desulfurization dust collector, the project reconstruction is bag-type dust remover and increases desulfurization device.

Antai Lingbei heating plant

Installation of the desulphurization device

Wet alkaline type smoke desulphurization tower

Antai heating plant

Installation of dust removers and desulphurization device

Environment equipment is bag dust collector and double wet alkaline type smoke desulphurization tower

2 Basis of compilation

2.1 Implementing standard

2.1.1 Standard of environment quality standard

（1）Ambient air quality standardCommon pollutants in the ambient air, the quality shall follow grade 2

standard regulated in the national “Ambient air quality standard” （ GB3095-1996）.

Table 2-1 Ambient Air Quality Standard

Standard ContentsPollutant density value limitation （mg/m3）

Hour average Day average Year average

GB3095-1996

SO2 0.50 0.15 0.06

PM10 0.15 0.10

NO2 0.24 0.12 0.08

（2）Environment quality standard for noise Antai Lingbei Heating Source Plant

It is located in the industrial zone, neighboring closely to No. 101 highway in the south and near the Ling-Zuo Highway in the east

To the West and North sides, class 3 standard in “Environmental quality standard for noise”（GB3096-2008）shall be implemented according to the functioning location of the heating exchange station: daytime 65dB (A)，night time 55dB (A).

To the South and East sides: class 4a standard in “Environmental quality standard for noise”（GB3096-2008）shall be implemented according to the functioning location of the heating exchange station: daytime 70dB (A)，night time 55dB (A).

Antai Heating Source Plant: class 2 standard in “Environmental quality standard for noise”（GB3096-2008）shall be implemented according to the functioning location of the heating exchange station: daytime 60dB (A)，night time 50dB (A). 2.1.2 Standard for pollutant discharge

（1）Waste gas Antai Lingbei Heating Source plant:

Boiler soot, SO2 emission standard "Power Plant Standards for the Discharge of Atmospheric Pollutants" GB13223-2011, the atmospheric pollutants emission concentration limit value of medium coal-fired power boilers and gas turbine unit is (smoke 30mg/m3，SO2400 mg/m3);

Antai Heating Source Plant:Boiler soot, SO2 emission is according to "Atmospheric Pollutants discharge

from boilers" (GB13271-2011), II level section of category 2 standard for coal boilers, See details in Table 2-2.

Table 2-2 Permissible Atmospheric Pollutants discharge standard for coal boilers

Unit： mg/Nm3 Pollutant elements SO2 Soot

Blackness （ le

vel ）（ GB13271-2001 ） II

zone

Level II 900 200 1

（2）Waste waterThe discharged waste water to the city sewage pipe network shall implement

the requirements of table 2-3 of “Integrated Waste Water Discharge Standard” of

Liaoning Province (DB21/1627-2008).Table 2-3 Integrated Waste Water Discharge Standard” of Liaoning Province

Unit mg/L

CODcr Ammonia nitrogen SS 300 30 300

（3）Noise

1. During the construction period

“Construction Site Environmental Noise Emission Standard”（GB12523-2011）shall be followed during the site construction noise control.

Table 2-4 Construction Noise Level Limits

Construction stage Main noise sourceNoise limits

Daytime Nighttime

Earth and stone work Bulldozer, excavator, loader 75 55

2. Noise limit in operation

Antai Lingbei Heating Source Plant:

“Environment Noise Emission Standard for Industrial Enterprise Site”（GB12348-2008）Category 3 shall be observed at the West and North boundary of the plant. Daytime 65dB (A)，night time 55dB (A). “Environment Noise Emission Standard for Industrial Enterprise Site”（GB12348-2008）Category 3 shall be observed at the East and South boundary of the plant. daytime 70dB (A)，night time 55dB (A).

Antai Heating Source Plant:“Environment Noise Emission Standard for Industrial Enterprise Site”（GB12348-2008）Category 3 shall be observed at the boundary of the plant. daytime 60dB (A)，night time 50dB (A).

（4）Solid waste disposal Solid waste disposal shall follow “Industrial Solid Waste Pollution Control

Standard of Liaoning Province”（DB21-777-94）and “General Industrial Waste Storage, Disposal Site Pollution Control Standard”（GB18599-2001）。

2.2 Basis of Compilation The environmental management plan is compiled according to the

environmental protection laws and regulations of People's Republic of China, the security policy of the World Bank, relevant environmental protection rules and planning documents of Liaoning Province and Chaoyang City, design document of the project, the environmental protection department of the People's Republic of China construction project environmental impact assessment technical documents and the International Environment Agreement signed by China.

3．Pollutant discharge behavior3.1 Waste water

All the production waste water shall be recycling used without emissions. Only domestic waste water discharge 800 t/a, and after septic tank processing, it is discharged into Ling Yuan City sewage treatment plant. The concentration of the main pollutants CODcr, NH3-N emission can meet the water pollutants maximum allowable emission concentration requirements of DB21/1627-2008 in table 2, therefore, with less impact on the surrounding environment.

3.2 Solid waste

The project has arranged multiple sludge buckets at the back of the blower house. Boiler slag shall fall onto the belt which transports it to the various slag buckets. The total volume capacity of the slag buckets is about 1400m3 which can guarantee the storage of boiler sludge quantity for 20 hours operation. The sludge will be transported out by trucks to the comprehensive utilization of ash Storage Company and to clean the sludge everyday.

Boiler coal ash is a good building materials, insulation materials, with can be integrated used for road paving, brick making, building raw materials, etc. The ash slag quantity produced by the project is 64007 t/a, and desulfurization slag 843 t/a. Ash slag is suitable for brick making admixture, and can be used in brick making, cement production, road construction, etc. The desulfurization slag can make gypsum board. The project construction company has already signed agreement with Ling Yuan City Jin Chuan Building Materials Co., Ltd. and Ling Yuan City Wa Fangdian County Xin Xin Building Materials Plant for the integrated utilization of the ash slag and desulfurization ash slag, a total of 80,000 ton. The ash slag and desulfurization ash slag produced from this project can be utilized 100%.

3.3 Waste gas After implementation, this project can realize central heating supply to 7

million square meters of building area. This combined heating and power generation, and large heating source plant can replace the scattered small coal-fired boiler houses. It can save energy greatly. According to the documents provided by the construction companies, and after implementation and operation,

the engineering project can replace 25 dispersed small boiler houses. The total load capacity is 69.16 MW. See table 3-1 for details, and see photo 3-1 for locations. See table 3-2 for replace boiler fuel consumption and pollutant emission conditions in the heating supply area.

Table 3-1 Replacement of boiler houses and boiler equipment survey

No. Heating supply Boiler house (set）

Capacity（MW） Total area （㎡）1 Passenger station 1 7 997822 House administration 1 5.6 573983 Ling Yuan hotel 1 1.4 97004 Water resources bureau 1 4.2 37975

5 Power supply bureau residence community 1 4.2 50777

6 Finance bureau 1 7 56495

7 Power supply bureau Beijie residence community 1 1.4 10000

8 Construction bank 1 2.8 226509 Netcom company 1 2.8 1814210 Court residence building 1 1.4 1346811 Bank of China 1 1.4 1520012 Commercial building 1 2.8 58835

13 Chinese medicine hospital residence building 1 1.4 12912

14 Chinese medicine hospital , 2nd department 1 1.4 17055

15 Zhenbei 2 Construction company building 1 0.35 3700

16 Commercial corporation 1 0.7 10797

17 City and marketing cooperative 1 4.2 36400

18 Hongjian community 1 12.6 152309

19 Zhenbei 1 Construction company building 1 1.4 5100

20 Hualin building 1 1.75 1974221 Tobacco company 1 0.56 460022 Urban management bureau 1 0.35 400023 Hui primary school 1 0.7 570024 Liangshi primary school 1 0.7 960025 Central plazza 1 1.05 16000Total 25 69.16 748337

Table 3-1

Table 3-2 Replace boiler fuel consumption and pollutant emission conditions in the heating supply area

No. Boiler housesTon（MW） Sulfur（％）

Ash（％） Coal（t/a）

Chimney（m）Inner

diameter（m）Dust remove（％）

SO2（t/a） NO2（t/a） Smoke（t/a）1 Passenger station 7 0.45 18.24 5594 18 1.2 60 40.3 16.4 54.42 House administration 5.6 0.45 18.24 3218 21 1.5 40 23.2 9.5 47.03 Ling Yuan hotel 1.4 0.72 16.67 544 18 0.3 20 6.3 1.6 9.74 Water resources bureau 4.2 0.43 15.99 2129 18 1.2 40 14.6 6.3 27.2

5 Power supply bureau residence community 4.2 0.45 18.24 2846 18 1.2 40 20.5 8.4 41.5

6 Finance bureau 7 0.45 18.24 3167 18 1.2 60 22.8 9.3 30.8

7 Power supply bureau Beijie residence community 1.4 0.85 18.24 561 15 1 20 7.6 1.6 10.9

8 Construction bank 2.8 0.72 16.67 1270 20 0.4 40 14.6 3.7 16.99 Netcom company 2.8 0.72 16.67 1017 24 1.5 40 11.7 3.0 13.610 Court residence building 1.4 0.43 15.99 755 21 1.2 20 5.2 2.2 12.911 Bank of China 1.4 0.43 15.99 852 21 0.3 20 5.9 2.5 14.512 Commercial building 2.8 0.45 16.67 3298 21 1.2 40 23.7 9.7 44.0

13 Chinese medicine hospital residence building 1.4 0.65 16.23 724 21 1.2 20 7.5 2.1 12.5

14 Chinese medicine hospital , 2nd department 1.4 0.85 18.24 956 21 0.4 20 13.0 2.8 18.6

15 Zhenbei 2 Construction company building 0.35 0.65 16.23 207 18 1 20 2.2 0.6 3.6

16 Commercial corporation 0.7 0.65 16.23 605 21 0.4 20 6.3 1.8 10.5

17 City and marketing Cooperative 4.2 0.65 16.23 2040 21 1.2 40 21.2 6.0 26.5

No. Boiler housesTon（MW） Sulfur（％）

Ash（％） Coal（t/a）

Chimney（m）Inner

diameter（m）Dust remove（％）

SO2（t/a） NO2（t/a） Smoke（t/a）18 Hongjian community 12.6 0.43 15.99 8538 20 0.5 60 58.7 25.1 72.8

19 Zhenbei 1 Construction company building 1.4 0.43 15.99 286 18 0.3 20 2.0 0.8 4.9

20 Hualin building 1.75 0.72 16.67 1107 36 0.3 20 12.8 3.3 19.721 Tobacco company 0.56 0.85 18.24 258 21 1.2 20 3.5 0.8 5.022 Urban management bureau 0.35 0.85 18.24 224 20 0.3 20 3.0 0.7 4.423 Hui primary school 0.7 0.65 16.23 320 18 1 20 3.3 0.9 5.524 Liangshi primary school 0.7 0.65 16.23 538 18 1 20 5.6 1.6 9.325 Central plaza 1.05 0.85 18.24 897 18 0.4 20 12.2 2.6 17.5

Total 347.8 123.3 534.2

1

4 Environmental impact analyses4.1 Current environment quality condition

4.1.1 Ambient air

Antai Lingbei Heating Source Plant:On Feb. 14, 2012 Ling Yuan City environmental monitoring station

supervises the regional environmental air quality of the project. The monitoring result shows the main pollutant (PM10) daily average value is 0.17mg/m3, sulfur dioxide (SO2), 0.031 mg/m3, nitrogen oxides (NOx), 0.029 mg/m3, SO2, NOx, concentration conform to the environmental air quality standard "GB3095-1996 secondary standard (day average total suspended particles is 0.30mg/m3, sulfur dioxide is 0.15mg/m3) requirements, PM10 particle (PM10 readings-which were taken) is over the standard requirements.

Antai Heating Source Plant:In January 2012 Ling Yuan City monitoring station evaluates the

ambient air quality in the region for evaluation of the daily SO2, NO2 average value of the monitoring points, the maximum are 0.048mg/m3, 0.048mg/m3

respectively. The maximum occupational rate is respectively; 32.0%, 40.0%; daily over the standard average value of TSP and PM10 are all 100%. The maximum value are 0.37mg/m3, 0.21mg/m3, the maximum standard occupational rate is respectively; 123.3%, 140.0%; SO2 and NO2 hourly average value at every monitoring points meet the standard. The maximum values are 0.078mg/m3, 0.068mg/m3, and the standard occupational rate respectively is; 15.6%, 28.3%.

4.1.2 Noise environment

Antai Lingbei Heating Source Plant:On Feb. 14, 2012 Ling Yuan City environmental monitoring station

supervises the regional environmental noise quality of the project. See the monitoring result in Table 4-1.

Table 4-1 Environment Noise Monitor result Unit：dB(A)

Boundary

ItemDate

Noise monitoring result：Measure unit dB(A)

L10 L50 L90 Leq SD

EastDate Feb. 14 70.1 64.8 61.2 67.6 3.7

Night Feb. 14 57.0 54.7 53.4 55.6 1.8

SouthDate Feb. 14 71.8 65.6 61.0 68.7 4.3

Night Feb. 14 60.8 56.7 54.2 59.4 3.2

WestDate Feb. 14 62.6 61.6 60.5 61.7 0.9

Night Feb. 14 56.5 79.0 43.8 53.0 4.9

NorthDate Feb. 14 63.4 60.0 58.3 61.3 2.1

Night Feb. 14 55.6 52.3 48.5 53.1 2.7

From Table 4-1 we can see, because the south plant boundary is close to the No. 101 highway, to the east adjacent to the Ling – Zuo Highway. The night noise level at the South and the East of the plant is over the standard of category 4a in “The Industrial Enterprise Plant Environmental Noise Emission Within the Boundary” (GB12348-2008) The noise level at other area of the plant meets the requirements of category 3 of “The Industrial Enterprise Plant Environmental Noise Emission Within the Boundary” (GB12348-2008).

Antai Heating Source Plant:Around the site of the plant 1 m away 1 noise monitoring station is set

up at Ling Yuan No. 1 junior middle school, Tiebei road street 1 Zhang Qing Lou’s house, and Yin Hai Jun’s house in the East of the plant, to the South is the Sports Bureau, to the West is Li Hong Tao’s house, to the north of the plant is the resident building of the No. 1 junior school. Noise level was checked at 10:00am in the day and 22:00pm in the night on January 28, 2012. Based on the analysis of the statistics of the monitoring results to use evaluation standard and direct comparison method to evaluation the site area environment noise quality conditions. See the monitoring results in Table 4-2.

Table 4-2 Environment noise monitoring result statistics at sensitive points around the plant

Boundary ItemDate

Noise monitoring result：measuring unit dB(A)

L10 L50 L90 Leq SD

EastDay Jan 28 51.3 45.5 42.2 48.7 3.8

Night Jan 28 44.4 40.7 37.5 42.6 3.1

South Day Jan 28 51.5 46.0 43.3 49.4 3.6

1

Night Jan 28 45.7 40.9 38.0 43.1 3.2

WestDay Jan 28 52.3 46.1 42.1 48.9 4.0

Night Jan 28 42.8 39.9 38.2 40.9 2.0

NorthDay Jan 28 51.5 44.4 41.4 48.4 4.1

Night Jan 28 43.0 37.8 34.6 41.5 3.8

Lingyuan No. 1 school

Day Jan 28 53.3 48.2 43.8 50.9 4.0

Night Jan 28 41.5 37.0 35.1 40.4 3.4

Mr. Zhang’s house

Day Jan 28 47.7 43.5 41.7 45.8 2.8

Night Jan 28 42.3 36.5 34.9 39.9 3.3

Mr. Yin Hai jun’s

house

Day Jan 28 54.1 47.2 42.3 50.1 4.1

Night Jan 28 46.1 39.8 36.9 43.0 3.7

Sport bureau

Day Jan 28 57.0 48.3 45.0 51.7 3.9

Night Jan 28 47.7 43.7 42.2 45.4 2.4

Mr. Li Hongtao’s house

Day Jan 28 49.0 47.6 46.6 47.9 1.1

Night Jan 28 42.7 38.7 37.0 42.5 3.0

Residence

building

Day Jan 28 50.2 46.6 42.8 47.4 2.8

Night Jan 28 43.4 37.8 33.9 40.7 3.9

Standard Category 2 standard of GB3096-2008, daytime at 60dB(A), Night time at 50dB(A)。From Table 4-2 we can see the daytime and the night time noise level at

the sensitive points around the project plant can meet the requirements of category 2 of “Noise Environment Quality Standard”（GB3096-2008）.

.4.2 Analysis of environment impact in operation period

4.2.1 Waste gas Antai Lingbei heating source plant: plans to use electric dust collector,

the dust removal efficiency is 99%, with double alkaline wet flue gas desulfurization process, the desulfurization efficiency is 95%. According to the above measures for treatment, see the boiler soot, SO2 emission situation, in Table 4-3.

2

Table 4-3 SO2 discharge situation after boiler modification Unit：mg/m3

Period Quantitym3/h Pollutant

Initial density

discharged

Before After

Efficiency Density Qty Efcy Dnsty Qty

Heatingsupply 235467 Smoke

SO2

26829

3025

91.44

5.45

2296.6

2861

3404

1866

99.5

95

11.5

143

53.2

105.9None supply 67716

From Table 4-3 we can see the smoke discharged from boilers after modification, the SO2 can meet the “Thermo Power Plant Pollutant Emission Standard” GB13223-2011. Atmospheric pollutants discharge concentration limit value of coal-fired power boiler and gas turbine unit (smoke 30mg/m3, SO2400 mg/m3).

SO2 calculation equation is as the following：SO2 mission quantity = 1.7×B×S×（1-η）Where: B— coal or coke quantity，kg/h S—coal or coke sulfur content rate，% η— disulphide rate，%

SO2=1.7×B×S×(1-η)=1.7×137100t/a×0.9%×(1-95%)=105.9t/aAccording to the first national census of pollution sources of industrial

pollution source emission coefficient manual, it is known that layer combustion furnace of all size burning 1 ton bituminous coal produces NOx 2.94 kg, 2 x 75t/H boilers shall burn coal 137,100t/per year which shall produce NOx 403.1 ton. After modification the 2 x 75t/H boiler smoke and dust emission shall be 53.2t/a，SO2105.9 t/a，NOx403.1t/a.

Antai Heating Source Plant: The boilers plan to use electric dust collector, the dust removal

efficiency is 99%, with double alkaline wet flue gas desulfurization process, the desulfurization efficiency is 95%. According to the above measures for treatment, see the boiler soot, SO2 emission situation, in Table 4-4.

Table 4-4 SO2 discharge situation after boiler modification Unit：mg/m3

Gas Qty(m3/h)

Density(mg/m3)

Chimney ht(m)

Emission efcy(kg/h)

Discharge dsty(mg/m3)

Emission standard(mg/m3)

Dust SO2

100Dust SO2 Dust SO2 Dust SO2

297629.4 9420 1250 10.8 14.35 47.1 62.5 200 900

From Table 4-4, we can see the smoke discharged from boilers, the SO2

3

can meet the category II period standard of “Boiler Atmosphere Pollutant Emission Standard” GB13271-2001. [Smoke dust maximum density discharge limit is 200mg/m3 ， SO2 density is 900mg/m3 Ringlemann blackness level 1].

SO2 calculation equation is as the following：SO2 mission quantity = 1.7×B×S×（1-η）Where: B— coal or coke quantity，kg/h S—coal or coke sulfur content rate，% η— disulphide rate，%

SO2=1.7×B×S×(1-η)=1.7×120930t/a×0.43%×(1-95%)= 44.2t/aAccording to the first national census of pollution sources of industrial

pollution source emission coefficient manual, it is known that layer combustion furnace of all size burning 1 ton bituminous coal produces NOx 2.94kg, 3 x 70MW boilers shall burn coal 12093t/per year which shall produce NOx 355.5 ton. After modification of the boilers, smoke and dust emission is 33.3t/a，SO2 44.29 t/a，NOx 355.5t/a.

Comparison of standards and boiler emission predicted ( mg/m 3 )

EHS guidelines on thermal power plant

Chinese standard on thermal power plant emission (GB13223 -2003 ）

Chinese standard on coal boiler emission （ GB 1327 1 -2001 ）

Lingbei CHP

Antai heat only plant

SO2 400 400 900 143 62

TSP 30 50 200 11.5 47

As can been seen from the above table, CHP in C h ina can meet the WB’s EHS standards. If the heat source is heat-only plant (i.e. coal-fired boilers) like Antai plant in Lingyuan city of our new subproject, it has some difficulty to meet dust standard even if it can meet C h inese standard on boiler emission after the retrofit.The design institute confirmed that the technology chosen in this project for dust removal, bag filter, is the best available technology for removing fine particulate matters. In addition, double alkali de-sulfurization and scrubbing followed can further remove particulate matters. Through stricter requirements on the detailed design during bidding process and proper operation and maintenance, particulate matter emission can be further brought down in line with the WB’s EHS Guideline standards.

4.2.2 Noise

4

Antai Lingbei Heating Source Plant This environment treatment increases new noise source control, mainly

the fan noise which is located in the sound insulation houses. Fan noise is lower than the original noise sound level, after operation and the fan original noise source combined with equipment noise value and transmission sound level and present situation stack value are not changed. Therefore, this project has increased equipment with its production noise, but it poses no affect to the enterprise current noise production situation, so the influence of sound environment at present situation can be neglected.

Antai Heating Source PlantThe present noise contribution value around boundary can satisfy “The

Industrial Enterprise Factory Emission of Environmental Noise within the Boundary" (GB12348-2008) 2 class standard requirements. After noise overlapping, daytime and nighttime noise emission can meet the standards of “Sound Environmental Quality Standard" (GB3096-2008) 2 category standard.

4.2.3 Waste waterAll the production waste water shall be recycling used without

emissions. Only domestic waste water discharge 800 t/a, and after septic tank processing, it is discharged into Ling Yuan City sewage treatment plant. The concentration of the main pollutants CODcr, NH3-N emission can meet the water pollutants maximum allowable emission concentration requirements of DB21/1627-2008 in table 2, therefore, with less impact on the surrounding environment.

4.2.4 Solid wasteThe project has arranged multiple sludge buckets at the back of the

blower house. Boiler slag shall fall onto the belt which transports it to the various slag buckets. The total volume capacity of the slag buckets is about 1400m3 which can guarantee the storage of boiler sludge quantity for 20 hours operation. The sludge will be transported out by trucks to the comprehensive utilization of ash Storage Company and to clean the sludge everyday.

Boiler coal ash is a good building materials, insulation materials, with can be integrated used for road paving, brick making, building raw materials, etc. The ash slag quantity produced by the project is 64007 t/a, and desulfurization slag 843 t/a. Ash slag is suitable for brick making admixture, and can be used in brick making, cement production, road construction, etc. The desulfurization slag can make gypsum board. The project construction company has already signed agreement with Ling Yuan

5

City Jin Chuan Building Materials Co., Ltd. and Ling Yuan City Wa Fangdian County Xin Xin Building Materials Plant for the integrated utilization of the ash slag and desulfurization ash slag, a total of 80,000 ton. The ash slag and desulfurization ash slag produced from this project can be utilized 100%.

4.3 Analysis of environment impact in construction

4.3.1 Analysis of atmosphere influence Dust produced in the construction is the main problem of environment

air pollution which poses certain bad influence to the residence along the piping network and heating exchange station surrounding residents. Construction dust rising is mainly from site material loading and unloading, and concrete mixing plant where is the prominent influence to the surrounding environment air quality, especially harmful to the site construction personnel. So construction companies shall adopt the following measures for strictly prevention:

(1) the building construction site must be unified with fending, throwing garbage from above is prohibited, to prevent construction process produces dust material, soil overflow. Site bare ground must be covered with soft or hard cover or spray water to prevent dust.

(2) Site surflaes, sand material and easily producing dust materials shall be covered by dust prevention net (fabrics);

(3) Cement, line must be stored in warehouses or closely covered;(4) Raw coal or wooden stove is strictly restricted at the construction

site. Temporary stove at the site must use clean energy as gas or electricity.

(5) Site must be timely cleaned, move out the surflaes and garbage or covered with fabric or board after completion of construction.

4.3.2Analysis of water environment influence

Domestic sewage water produced from the site construction workers is the main water pollution source in the project construction period. The number of construction workers is varied depending on different stages of construction period. Normally there are dozens of construction people. If the daily water consumption by construction personnel is calculated as 50 L/person, and the domestic sewage water quantity produced is calculated at 85% of the water used, the average daily sewage discharge per person is at 42.5 L/person. By analogy, SS produced is 182 mg/l, CODcr is 173 mg/l, ammonia nitrogen is 9 mg/l. If the above said domestic sewage water is discharged directly, it will cause water pollution to the regional water

6

environment.

4.3.3 Analysis of solid waste influence to environment

Domestic and construction garbage produced from construction worker enclave and from construction process at site, such as packing bag, building leftover material. If not treated properly, they shall cause certain influence to the environment.

4.3.4 Analysis of noise environment influenceMain equipment used in the construction period is loader, mixer, and

heavy duty trucks. According to relevant monitoring data, it shows that the construction site boundary noise value is 85-95db (A). According to the point source attenuation model and forecast the overlapping formula, for calculation, the construction machinery noise strength in the 100 m of the construction site, see the noise effect value in Table 4-5.

Table 4-5 Construction Noise Influence Value Unit: db(A)

Phase Noise source levelDistance from noise source（m）

20 40 60 80 100

Earth work Bulldozer, excavator 85~95 59~69 53~63 49~59 47~57 45~55

Structure Cement mixer, vibrator 90~100 65~74 58~68 54~64 52~62 50~60

Decoration Crane , lifts 77~87 51~61 45~55 41~51 39~49 37~47

“Noise Limit at construction site”（GB12523-2011） Daytime（70~65） Nighttime 55

“Sound environment quality standard”（GB3096-2008）III Daytime 65, nighttime 55

The following measures shall be take to ensure the surrounding area free of construction noise influence：

1. Good arrangement of the construction time, from 22:00pm. to 06;00am construction activities must be stopped.

2. Loud noise equipment should be reasonable arranged, and take the necessary shock absorption, noise elimination measures to ensure construction field noise standard requirements.

5 Relieving measures for environment impactBased on environmental impact assessment documents, combined with

the project characteristics, on the analysis of pollutant discharge during project construction and operation period, based on different types of

7

pollutants and in different time to use relieving measures for environmental impact, see table 5-1.

The planned commencement date is in April 2012 and be completed in November 2014.

8

Table 5-1 List of relieving measures for pipe network impact to environment

Stage Problem Relieving measures Reduce cost(10,000) Responsible Supervision

Con

stru

ctio

n pe

riod

Noise

1．Proper construction time arrangement without nighttime working，only starts from 6am.-- 10pm.

2. Use low noise machine for construction. Pile foundation construction uses hydraulic piling, static pressure piling and excavation piling. Construction equipment is deployed near the center of the site.

3．Noise of the construction equipment must meet the requirements of “Noise Limitation for Construction Site”（GB12523-90） . These requirements shall be included in the bidding documents of construction company.

4．Follow-up supervision.

4

Con

stru

ctio

n co

mpa

ny

Lin

g Yu

an C

ity E

nvir

onm

ent B

urea

u

Dust

1．Set up water spray, dust quenching system, spray water at regular time everyday to prevent dust flying. Spray more water under strong wind and dry conditions.

2．Washing truck wheels facility shall be set up at site exit area to prevent vehicles bringing earth out of site

3．Loose material transportation shall be covered or in containers. 4．Timely clean construction wastes and move out of the site without burning it at site.

5

Rd cons Use existing road, not construct new roads 1

Culture remains Stop construction and notify concerned department if any culture remains is discovered 2

Slid waste

Send the domestic garbage to Ling Yuan land fill site. Back filling construction garbage and soil 5

Waste water Domestic waste water shall issue into city sewage treatment factory for treatment 3

Ope

ratio

n pe

riod Noise After building noise isolation and distance attenuation, the boundary noise can satisfy the

corresponding standards 2

Ling Yuan Antai Heating

Source Co.

Waste gas The cloth bag dust, with double soda wet flue gas desulfurization process desulfurization 3

Waste water

All production wastewater recycling, sewage to urban sewage treatment plant 3

Solid waste

Ash suitable for brick admixture, and can be used in brick, system cement, road construction, etc., desulfurization slag for gypsum board. 3

9

10

6 Organization structureIn order to ensure effective control and reduce various adverse

environmental impact whole process of the engineering shall be scientifically tracked with standardized environment management and environmental monitoring. Monitoring and monitoring management organization is shown as the following.

1．Compilation of site monitoring, data analyses and statistics, monitor report shall be the responsibility of qualified organization trusted by Ling Yuan Antai Heating Supply Co., Ltd.

2．World Bank environment officers, foreign fund office of Liaoning development and reform committee, employer (Ling Yuan Antai Heating Supply Co., Ltd) is responsible to receive the monitoring reports.

3. Hierarchy bureaus are responsible for supervision.

4．Pollution reduction measure is the responsibility of Ling Yuan Antai Heating Supply Co., Ltd. in the heating operation period, to be implemented by the construction company，and be supervised by the qualified environmental supervision company (Consultant company employed) trusted by Ling Yuan Antai Heating Supply Co., Ltd.

National environment commission

Liaoning environment ministry

Environment bureau of Chaoyang city

World bank environment office

Liaoning development and reform ministry

Introduce foreign fund project officeM

onito

r sta

tion

监测站

Envm

t sup

vsn

com

pany

Proj

ect C

ontra

ctor

Mon

itor s

tn

Ling Yuan Antai Heating supply Co., Ltd.

11

7 Monitor Plan

Stage Monitoring Monitoring location Monitor method Monitor frequency Cost

(10,000)Responsible Organizat

ion

Con

stru

ctio

n pe

riod

Noise 4 sides of the plant Noise meter One time per week at daytime or monitor it after received complains 0.3

Con

stru

ctio

n un

it

Ling

Yua

n ci

ty e

nviro

nmen

t bur

eau

Dust Plant surrounding Visual One time per week in dry and windy weather 0.05

Bare land/erosion Foundation excavation Visual In storm or after storm 0.02

Discovery of culture remains

Pipe crossing area, any excavation location Visual Continuous monitoring 0.02

Domestic and construction garbage Dump at site Visual 2 or 3 times in removal period 0.02

Ope

ratio

n pe

riod

Dust SO2、NOx Boiler location Gas detector Two times in the period or after receiving complains 20000

Noise Noise detector

One time in the period or after receiving complains 0.05

Solid waste Construction site Visual Once a week 0.05

Table 7-1 Environment monitor plan during construction phase

12

8 Report system

8.1 Monitor report

8.1.1 Kinds and contents of monitor reportThe monitor reports are divided into monitoring reports in construction

period and operational period. Explanation of monitoring location, sampling time, monitor factors

shall be compared with relative standards, and to analyze, evaluate the monitoring results in construction and operational period.

Evaluate the implementation effect of environment relieving measures according to the monitored results.

Talk and discuss with the environment monitor organization and environment influence evaluation team on the improvement or change non effective relieving measures.8.1.2 Time of monitoring report submission and receiving department

（1）Submission of the monitoring report：Stage monitoring report shall be submitted once a month according to

the progress in the construction period and submit final integrated report after the completion of the project；

Seasoning report shall be submitted in the operational period and submit an annual report yearly；（2）Monitoring report receiving department：

Monitoring report receiving departments：Environment Protection Bureau of Ling Yuan City, Environment Protection Bureau of Chao Yang City, Ling Yuan Antai Heating Supply Liability Co. Ltd. and the World Bank.

8.1.3 Suggestion feedback requirements to the monitoring reports

Suggestion feedback shall be provided within one month after receiving the monitoring reports by the departments.

In the feedback period, the receiving department shall analysis and evaluates the contents of the monitoring report, to confirm the effectiveness of the environment relieving measures and make next step arrangement with corresponding requirements.

(If necessary), in the suggestion feedback period, the reports receiving

13

departments shall propose suggestions and adjustment scheme for environment relieving measures.

8.2 Records and annual report of EMP implementation

8.2.1 Record system

In order to have an effective operation of the environmental management system, the owner, Ling Yuan Antai Heating Supply Liability Limited Company, must establish a perfect record system, and keeps records of the following aspects: Law and regulations requirements; License; Environmental factors and the relevant environmental impacts; Training; Inspection, Check and maintenance activities; Monitoring data; None conformities, Corrective and preventive measure validity; Related party information; Audit and review. In addition, all the said above records shall be controlled, including: record identifications, collection, cataloging, filing, storage, management, maintenance, enquire, retention time, disposal and other steps.8.2.2 Implementation report of EMP

The owner, Ling Yuan Antai Heating Supply Liability Limited Company, shall make detailed records to the EMP implementation situation and timely reports to the project office；Project progress reports (monthly, quarterly and yearly reports) prepared by the project office shall include items of EMP progress and effects, etc；Annual EMP implementation report must be submitted to the World Bank with in the regulated time.

The EMP implementation report shall include the following items Implementation situation of the training schedule； Project progress； Any public complains，if any，record the main contents of the

complains, solving method and public satisfaction； Next year EMP implementation schedule.

9 Training Plan In order to have a smooth and effective implementation of the project, it

is necessary to conduct environmental protection knowledge and skills training to all employees, especially to the construction workers. In addition to the explanation of the importance of the proposed construction project and the significance of implementation to all the employees, different emphasis training shall be conducted to different post employees. Specific training method shall be conducted to different management levels and different environmental important working post. See the specific training plan in

14

Table 9-1.Table 9-1 Training plan for environment protection technicians

Employee Training items Method No. Time（day）

Cost（10,000）Local currency

Environment protection technicians

Basic theory of environment protection, monitor method, prepare monitor report and post training.

Dom

estic

trai

ning

4 2 2

Project supervisor, contractor, team leader in construction period management staff in

operation period

Environment regulations, construction plan environment monitor rules and specifications, noise monitor and control technology

4 3 5

Managerial staff, operation and

maintenance members

Theory of boiler, environment facilities and auxiliary devices and operation process, safety production detains, maintenance method, etc.

36 15 4

Total - - - 20 11

10. Public participation in the implementation of the project

Public participation in environmental impact assessment report is an important part of decision making is crucial to improve. It can direct response public opinion, make the decision department to identify potential problems in time, in a timely manner to amend and perfect the design scheme, make public reflect problems fundamentally solved, and construction projects in the planning, design and environmental monitoring and management tend to be more perfect and reasonable, and strive to the construction of the project in the environmental benefits, social benefits and economic benefits have the unity of the optimization.

According to the “Interim Measures Public Participation in Environmental Impact Assessment”, the project makes a public notification in Ling Yuan City newspaper and at the sites. The publication date in Ling Yuan City newspaper is on February1, 2012, lasting for ten days. See the picture of publication in Ling Yuan City newspaper in the following Figure 10-1; See site announcement photo in Figure 10-2. During the public notification, to further obtain suggestions to the project construction from the general public. Questionnaire form is issued to the surrounding public during the publication, asking for public opinions.

15

图片 Figure 10-1 Publications on Ling Yuan City Newspaper

16

Figure 10-2 Publications

In the public participation, interview and issuing 30 questionnaires for public suggestions, all the 30 copies are recovered with 100%. Statistics are made to every copy recovered. See the results in Table 10-1.

Table 10-1 Statistic results from the public questionnairesConstruction Project Opinions and numbers

Do you agree for and support this engineering construction or not?

Agree Yes No30 0 0

From the public survey statistical results, we can see the public support attitude opinion to this heating engineering construction accounts for 100%. Thus we can see, all the surveyed public supports the construction of this project which shows that the supportive public considers that the heating engineering construction is beneficial to the economic development of Ling Yuan City and heating supply to the residents in winter time.

In addition, no complain feedbacks from the Ling Yuan City newspaper publication. The conclusion is that the public has no objection to the construction of this project.

17

11 Cost of implementing the management planThe implementation cost of the project environment management plan

mainly includes training to employees, environment supervision in the construction period and environment monitoring in the construction. See details in table 11-1 and 11-2.Table 11-1 Budget and financial table of environment management

implementation cost Unit：10,000yuan RMB

ItemsOne year budget in

construction period

One year budget in operation

periodFinancing

Salary 15 36

Domestic funds

Office expenses 8 5Traffic cost 8 5

Monitoring cost 10 8Supervision engineer

budget 6 -Total budget for

environment management planning

47 54

Table 11-2 Employee training expenses Unit：10,000yuan RMB

Items No. of employee Cost Financing

Environment staff in construction 4 2

Domestic funds

Engineering supervisor, contractor,

team leader, environment

managerial staff in operation

4 5

Total - 7

12 Analyses of alternative solutionEnvironmental protection equipment modification of Ling Yuan City

urban centralized heating engineering project has put forward the preferred scheme and alternatives respectively as the following:.

1 The preferred schemeThe desulfurization of the project uses spray desulfurization tower. The

desulfurization system shares a set of desulfurization agent preparation system, slag treatment system and electrical control system.

18

1.1 The working principle of the spray desulfurization tower Flue gas goes into the tower at the smoke inlet. Due to the sectional

area of the sudden enlargement and flue gas uniform layer atmolysis function to make smoke in tower form very uniform distribution and form very strong turbulence, so as to improve the efficiency of the desulphurization effect. The slurry fluid in the absorption tower can be sprayed into fog through the efficient atomization nozzles with covering area up to 200%, and the flue gas to form good gas-liquid contact reaction interface. The flue gas in the tower constant rises, and the foggy slurry conducts as a comprehensive high effective mixing contact, and develops into effective chemical reaction, SO2 and acidic gas are removed. Take the mist smoke through the mist device to minimize the flue gas zone water phenomenon, after dehydration the fog is discharged into the atmosphere through the chimney.

1.2 The working principle of spray desulfurization tower Magnesium oxide is made into slurry for SO2 absorption to form

magnesium sulfate and magnesium sulfate containing of crystallization water. After concentrated and treated with plate and frame filter pressing processing, desulfurization slag shall be transported out.

Magnesium oxide method can deal with large volume of smoke, the desulfurization efficiency is high. The magnesium oxide in our country is rich in resources, and the price is cheap. Operation has no scaling, no jamming. The operation process is also mature with relatively less circulation.

The reaction principle is as the following: 1. Absorption reaction: MgO + H2O ←→ Mg(OH)2

Mg(OH)2 + SO2 + 5H2O ←→ MgSO3·6H2O MgSO3·6H2O + SO2 ←→ Mg(HSO3)2·5H2OMg(HSO3)2 + Mg(OH)2 + 10H2O ←→ 2MgSO3·6H2O

2. Oxidizing Reaction: Mg(HSO3)2 + 1/2O2 + 6H2O ←→ MgSO4·7H2O + SO2

Mg(HSO3)2 + 1/2O2 + 7H2O ←→ MgSO4·7H2O Mg(OH)2 + SO3 + 6H2O ←→ MgSO4·7H2O

1.3 Explanation of Process FlowIn the advanced technology, reliable operation and economic and

19

reasonable principles and in order to maximize reducing one-time investment, for energy consumption and system maintenance convenient to design drawings as processing (see the attached figure). A complete set of system consists of flue gas system, absorption tower system, desulfurization fluid circulation system and slag treatment system, desulfurization agent preparation system and electrical control system, etc.

After dust flue gas is induced and turns into spray desulfurization tower, through the blower fan, for desulfurization processing, desulfurization of flue gas by flue directly into the chimney and discharged into the atmosphere.

Desulfurization solution uses tower internal circulation absorption method to absorb the desulfuration liquid of SO2 and flows back to the bottom, the circulation pump will pump the desulfurization solution back to the spray layer. The desulfuration liquid and gas through reverse contact after the flue gas sulphur dioxide emersion. Roots blower will oxidize air blowing directly into the desulfurization tower inside. It will desulfurize slurry oxidation, and at the same time the slurry will be pumped out of the tower by slurry discharge pump and flows to the swirler group of enrichment. After the enrichment of supernatant fluid flow cycles in the pool, it shall be pumped back to the desulfurization tower by water pump.

Sediment is transported out regularly after plate and frame filter pressure treated

Magnesium oxide needed by desulfurization shall directly deliver to magnesia powder silo by container carriers and add ash when the slurry is not enough in the curing tank according to technology requirements. Processing water can be started to dose with the slurry. At the same time to start the mixing. Magnesium hydroxide solution is added to the cycle pool, through the converter adjustment and according to the pH value in the circulation pool to ensure that the circulation fluid of pH value and the whole system of magnesium hydroxide content stable. Then the desulfurization fluid shall be pumped into the spray layer through circulating pump for desulfurization to realize the relative stable control of desulfuration solution concentration and pH value in the desulfurization agent to ensure the desulfurization efficiency.

1.4 Desulfurization tower system and flue gas system

Desulfurization system includes desulfurization tower, flue, etc. The desulfurization tower is the core equipment of desulphurization system.

Table 12-1 equipment of the main technical features

Equipment Specification parameter

20

Desulfurizer

Model：SYP-75T/H；Capacity Q=190000m3/h；Inner diameter D=4100mm；Height H=22500mm；

Efficiency ：≥90%Resistance ：≤1200Pa

In order to ensure the security of the desulfurization, the system sets up a bypass flue system, when the temperature of the flue gas desulfurization tower is overheating or emergency occurs, the bypass flue damper door shall be automatically opened to ensure the safety and stability of the whole system.

Absorption tower, in the overall supply of the equipment, includes absorption tower body, spray layer and all internal components, mist eliminator and external steel structure, etc. The desulfurization tower uses carbon steel with glass flake for corrosion proof. The material of the spray layer in the absorption tower uses FRP material. Its corrosion resistance, wear resistance and high temperature strength can ensure the service life of the absorption tower. Tower body assembly and external steel structure (such as platform escalator, etc.) shall be completed at the installation site.

1.5 Circulation systemThe sulfur dioxide absorption desulfuration liquid flows into tower

container after desulfurization and the circulating pump will pump the sulfur dioxide desulfurization slurry back to the spray layer for spraying, to remove sulfur dioxide. The circulation system is mainly composed of circulating pump, the circulation line system, etc.

1.6 Slag treatment systemThe boiler desulfurization system shares a set of slag processing system

with slag processing. The system is mainly composed of plate and frame filter press, slurry pump and slurry pipeline, etc.

1.7 The desulfurization agent preparation systemThe desulfurization agent preparation system includes ashing tank,

chemical ash pump, mixer, and equipment. The ashing container and buffer tank shall be designed as the boiler full load operation for 2 hours consumption. Through the ashing tank level to control reactor PH value to start the chemical ashing and add magnesium hydroxide when the level is low by the buffer pump at the same time, supply certain amount of processing water to the designated process level. After preparation of the magnesium hydroxide slurry and according to the buffer tank liquid level

21

automatically to open the ash pump to pump the prepared slurry into the buffer tank.

1.8 Added water to the consumption of the systemDesulfurization evaporation and desulfurization of slag with water can

cause the whole water system imbalance. In order to maintain water balance of the whole system, processing water must be added in the form of demister cleaning process through the process water system.

2. Optional design schemeThe project desulfurization system adopts double process, the use of

NaOH solution for the first alkali absorption of flue gas SO2. Garnish with lime as the second base regeneration, the formation of calcium sulfite use air oxidation into gypsum in the integrated basin in precipitation, by grab grabbing the outbound, including desulfurization circulating water system, dosing system and aeration system.

Desulfurization circulating water system includes: desulfurization circulating water tank, the circulating water pump, the desulfurization tower, nozzle and ash trench, NaOH solution add to desulfurization tower by nozzle, to absorb SO2 to create sodium sulfite through the ash groove into desulfurization cycle pool, desulfurization cycle pool with sedimentation tank, aeration pool, clear water reservoirs. Sodium sulfite in desulfurization cycle in the pool and lime reaction produces calcium sulfite (part precipitation), at the same time generate NaOH, calcium sulfite in aeration tank reaction generation calcium sulfate precipitation which shall be taken out by the dipper.

2.1 Wet desulphurization principleUsing sodium - calcium double process, the basic chemical principle

can be divided into desulfurization process and regeneration process, oxidation process.

A Desulfurization Process

Na2CO3+SO2→Na2SO3+CO2 (1)2NaOH+SO2→Na2SO3+H2O (2)NaSO3+SO2+H2O→2NaHSO3 (3)

According to the above three types of suction change liquid PH varies alkaline higher (PH > 9). (2) Type as the main reaction; when the alkaline is low, type (1) is the main reaction; when the alkaline is neutral even acid (5 <

22

PH ＜9), type (3) is the main reaction.

B Regeneration Process

2NaHSO3+Ca(OH)2→NaSO3+CaSO3.1/2H2O+3/2H2O (4)NaSO3+Ca(OH)2→2NaOH+CaSO2.1/2H2O (5)

C. Oxidizing Process 2CaSO3.1/2H2O+O2+3H2O→2CaSO4. 2H2O

Ca(HSO3)2+1/2H2O+H2O→CaSO4. H2O+S O2

In the lime slurry, the neutral Na2HSO3 shall soon release Na + from lime reaction, then generated SO3

2- and continue to react with limestone to product hemi-hydrate in the form of settling down, so to get the sodium base regeneration. Visible (Na2CO3、NaOH) can only be as a kind of moving alkaline. After starting up, the actual consumption is lime, theoretically it doesn’t consume soda alkaline (just bring away some when the slag is taken away, the loss is less)

When the alkali absorption liquid in the washing tower washing gas, the solubility of SO2 is stronger, It can be deemed full absorption or melting, PH = 12 alkaline solution, the dissolution is SO2, PH value fell rapidly and be stable between 6-7, then slowly go down. This is because the SO2 in acid solution, the dissolve is less. Flue gas desulfurization device uses multiple spray devices according to the characteristics of SO2. When the level of spray device spray out PH = 10 liquid, it absorbs SO2. The liquid PH value drops rapidly to 6-7. At this point, the liquid drops to water pool, exhaust dust liquid PH value is about 5-6 into displacement pool, supplement the PH value and exchange out Na +. PH value returns to more than 8.

2.2 Wet desulphurization processA. Flue gas flowFlue gas rises in the desulfurization tower and absorbs liquid reversible

to contact washing to produce chemical reaction. After multistage treatment, dust particles and SO2 in the flue gas is removed. The purified flue gas shall be evacuated into the chimney for exhausting.

B. Absorption liquid circulation processAbsorption liquid in desulfurization tower with flue gas fully contacts

reaction at the bottom into the oxidation pond for aeration oxidation, and lime slurry for regeneration substitution reaction. Produce ash in the settling basin for stable compounds precipitation. At last, the top clear liquid in the

23

PH adjustment tank shall add a certain amount of sodium alkali liquor into it, and the circulating pump sends it to the desulfurization tower for circulation usage. The desulfurization fluid circulation system has no sewage effluent, does not produce secondary pollution.

C. Desulfurization solution preparation and regeneration processDesulfurization regeneration agent (CaO) stored in the storage silo,

when PH value detection system check the PH value is lower than the preset value in the regeneration tank, the desulfurization regeneration agent shall prepare slurry in the lime emulsion pool, go into the oxidation pond to absorbing liquid for regeneration.

3. Two system comparison..

Double alkaline method

Magnesium oxide method

Technology matured Matured MaturedArea occupation Normal Small Processing system Complicated Simple Investment amount Normal LowLiquidize rate Less ＞ 2L/m³ Less ＞ 2L/m³Operational cost Low Low Circling pipe and network Simple Simple Active desulfurization strong strongTower type selection Extensively

availableExtensively available

Scaling process Normal Normal Control degree Higher

requirementSimple

Slag quantity More quantity Only 40% of lime slag method

Water consumption less Less Operation requirement Complicated Simple

24

Attached Close plan of small boiler houses for central heating supply in Ling Yuan city

No. Boiler houses

Construction

Nature Current boilers Current heating area(㎡)Heat loadMW

Any asbestos

Dismantle schedule

colle

ctiv

een

terp

rise

Publ

ic

offic

e Qty Ton Coal comspnPublic

building Resident Totalyear set t／h （t／h）

Total           27 99 16.85 327341 420996 748337 41.16    1 Bus station 2003   √   1 10 2.25 42786 56996 99782 5.49 yes 20142 Housing dept 1995     √ 1 8 1.29 28285 29113 57398 3.16 yes 20153 Lingyuan hotel 2010 √     1 2 0.22 8100 1600 9700 0.53 No 20154 Water bureau 2003     √ 1 6 0.86 16518 21457 37975 2.09 No 2014

5 Power supply residence 2001   √   1 6 1.14 4054 46723 50777 2.79 yes 2014

6 Financial bureau 2009     √ 1 10 1.27 12000 44495 56495 3.11 No 2015

7 Power supply company residence 1992   √   1 2 0.23 0 10000 10000 0.55 yes 2013

8 Construction bank 1994   √   1 4 0.51 7680 14970 22650 1.25 yes 20159 Netcom company 1995   √   1 4 0.41 12318 5824 18142 1.00 yes 2015

10 Court residence building 2000     √ 1 2 0.30 6754 6714 13468 0.74 yes 2014

11 Bank of China 1998   √   1 2 0.34 9300 5900 15200 0.84 yes 2012

12 Commercial building 1996 √     1 4 1.32 46197 12638 58835 3.24 yes 2014

13 Chinese hospital residence 2001     √ 1 2 0.29 5860 7052 12912 0.71 yes 2014

14 Chinese hospital 2 section 1994 √     1 2 0.38 8840 8215 17055 0.94 No 2013

15Zhenbei 2

construction building

1992 √     10.5

0.08 0 37003700

0.20 No 2012

16 Commercial company 1994 √     1 1 0.24 6566 4231 10797 0.59 No 2012

17 City supply and marketing office 1999     √ 1 6 0.82 6350 30050 36400 2.00 yes 2014

18 Hongjian communitee 2007 √     3 18 3.43 48993 103316 152309 8.38 No 2015

25

19Zhenbei 1

construction building

1994 √     12

0.11 0 51005100

0.28 No 2012

20 Hualin building 2004 √     1 2.5 0.44 16840 2902 19742 1.09 yes 201521 Tobacco company 1988   √   1 1 0.10 4600   4600 0.25 No 2014

22 City management bureau 1999     √ 1 0.5 0.09 4000   4000 0.22 No 2014

23 Hui primary school 2002     √ 1 1 0.13 5700   5700 0.31 yes 2015

24 Liangshi primary school 1996     √ 1 1 0.22 9600   9600 0.53 No 2012

25 Central market 2008 √     1 1.5 0.36 16000   16000 0.88 No 2014

26