mitigation of global warming from tokyo wate...title microsoft powerpoint - mitigation of global...

Copyright 2010 Bureau of Waterworks, Tokyo Metropolitan Government. All Rights Reserved.Copyright 2010 Bureau of Waterworks, Tokyo Metropolitan Government. All Rights Reserved.

Bureau of Waterworks

Tokyo Metropolitan Government

Mitigation of Global Warmingfrom Tokyo Waterworks

- a multi-solution approach

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Copyright 2010 Bureau of Waterworks, Tokyo Metropolitan Government. All Rights Reserved.


Today’s Topics

1. Outline of Tokyo Waterworks

2. Challenges concerning Energy Use

3. Current Status of Regional Climate Warming

4. Strict Regulations of Recent Years on CO2 Reduction

5. Efforts for CO2 Reduction in Tokyo Waterworks

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Outline of Tokyo WaterworksOutline of Tokyo WaterworksOutline of Tokyo WaterworksOutline of Tokyo Waterworks

World’s Largest Water Utility

●Population served: ca. 12 million

● Pervasion: 100%

● Tot. len. of dist. pipes: ca. 26,000 km

●Ave. dist. amt/day: ca. 4.4 million m3/day

World’s Highest Levelof Water Supply Service

●World’s highest quality water

●Low leakage rate

● Firm financial base

Asaka Water Purification Plant(1.7 million m3/day)

Ozo

ne

injectio

n

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Challenges concerning Energy UseChallenges concerning Energy UseChallenges concerning Energy UseChallenges concerning Energy Use

Our responsibility is to supply safe and fresh water

to Tokyo Residents

On the other hand, we consume 1%

of the total electricity used in Tokyo

About 60% of the total energy consumption (raw watertreatment process/water purification process /distributionprocess) relates to the distribution

Annual elec. use of Tokyo Waterworks (FY 2009): ca. 700million kWh

Annual elec. use of Tokyo (FY 2009) : ca. 82 billion kWh

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1,400,000

1,600,000

1,800,000

0

100,000

200,000

300,000

400,000

Ｈ１２Ｈ１３Ｈ１４Ｈ１５Ｈ１６Ｈ１７Ｈ１８Ｈ１９Ｈ２０

年間

配水

量（千

m3/年

）

CO2排

出量

（ｔ－

CO

2)

年度

事務所原水高度及び膜処理設備浄水（高度・膜処理設備を除く）配水配水量（千m3/年）

329,119 325,463 315,684 312,748 322,818 325,489 335,412 320,696 312,950

62% 62% 63% 63% 64% 60% 59% 58% 59%

8% 7%5% 4% 4% 5%

6%7%

2% 2%2% 2% 3% 3%

2%3% 3%

33%

5％

28% 29% 30% 30%30%

32%33%

33%

Challenges concerning Energy UseChallenges concerning Energy UseChallenges concerning Energy UseChallenges concerning Energy UseAdv. & membranetreatment equipments

Purification (without adv. &membrane treatmentequipments)

Rawwater

Offices Dist. Dist. amt (km3/year)

An

nu

ald

ist.

amt

(km

3/y

ear)

CO

2em

issi

on

(t–

CO

2)

2000 2001 2002 2003 2004 2005 2006 2007 2008

FY5



Challenges of water supply system (water transport with a frequent use of pumps)Challenges of water supply system (water transport with a frequent use of pumps)


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Sedimentationbasin Filter

Water purificationbasin

Ozonation unit

BAC unit

Ozonation and Bio-Activated CarbonFilteration water purification facilities

River

Challenges of water supply system (facilities on multiple levels within a small area)Challenges of water supply system (facilities on multiple levels within a small area)


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Current Status of Regional Climate WarmingCurrent Status of Regional Climate Warming

Source: 2010 EDMC Handbook of Energy & Economic Statistics in Japan 8



Current Status of Regional Climate WarmingCurrent Status of Regional Climate Warming

Source: Greenhouse Gas Inventory Office of Japan 9



Strict Regulations of Recent Years on COStrict Regulations of Recent Years on CO22 ReductionReduction

1. Japan

Mid-term and long term objectives

To reduce emissions by 25% by 2020; to reduce emissions by80% by 2050 (both as compared to the 1990 level)

To achieve a renewable energy contribution of 10% to theprimary energy supply (in 2020)

2. Tokyo Metropolitan Government

To reduce CO2 emissions by 25% by 2020, as compared to the2000 level (15 million t-CO2)

To impose the cap-and-trade emissions trading scheme onlarge-scale business facilities

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Filter beds of Asaka Water Purification Plant

1,200 kW

Filter beds of Ozaku Water Purification Plant

280 kW

Service reservoir at Ozaku Water Purification Plant

180 kW

Efforts for COEfforts for CO22 Reduction in Tokyo WaterworksReduction in Tokyo Waterworks

Introduction of renewable energies (solar generation)

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Efforts for COEfforts for CO22 Reduction in Tokyo WaterworksReduction in Tokyo WaterworksIntroduction of renewable energies (solar generation)

Electric power generated and others are performances of FY 2009CO2 emission coefficient used is 0,382 (t- CO2 / K kWh/year) (Source: Guideline for calculation of renewable energycredit in Cap-and-Trade Emissions Trading Scheme, March 2010)

Plant NameInstalled

in

Ratedoutput(kW)

Electric powergenerated

(K kWh/year)

Equiv. to the powercons. by ordinary

Japanese households

CO2 reduction(t-CO2/year)

Higashi-murayama 1994 70 51 15 19

Ogouchi Res. 1998 153 93 27 35

Takatsuki Pur. Pl. 2003 20 15 4 5

Asaka Pur. Pl. 2004 1,200 740 218 282

Misono Pur. Pl. 2004 400 351 103 134

Ozaku Pur. Pl. 2004 280 213 63 81

Higashi-murayama 2006 1,200 815 240 311

Kanamachi Pur. Pl. 2006 800 614 181 234

Misato Pur. Pl. 2006 1,080 794 234 303

Nagasawa Pur. Pl. 2006 200 153 45 58

Ozaku Pur. Pl. 2009 180

Total 5,583 3,839 1,130 1,462

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Efficient use of unutilizedenergy through inflow pressure

and inflow amount

Pressure required for watertransmission from water

supply station A to station B

Inflow pressureat station B

Water purification plantTransmission pump

Small hydraulicgeneration equipment

Inflow amount

Water supply station B

Water supply station A

Efforts for COEfforts for CO22 Reduction in Tokyo WaterworksReduction in Tokyo WaterworksIntroduction of renewable energies (small hydraulic power generation)

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Kameido Water Supply Station

90 kW

Efforts for COEfforts for CO22 Reduction in Tokyo WaterworksReduction in Tokyo WaterworksIntroduction of renewable energies(small hydraulic power generation)

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Higashi-murayamaPurification Plant

1,400 kWYakumo Water Supply Station

300 kW




Introduction of renewable energies (small hydraulic power generation)

Electric power generated and others are performances of FY 2009CO2 emission coefficient used is 0,382 (t- CO2 / K kWh/year) (Source: Guideline for calculation ofrenewable energy credit in Cap-and-Trade Emissions Trading Scheme, March 2010)

Plant NameInstalled

in

Ratedoutput(kW)

Electric powergenerated

(K kWh/year)

Equiv. to the powercons. by ordinary

Japanese households

CO2 reduction(t-CO2/year)

Higashi-murayama 2000 1,400 92 27 35

Minami-Senju 2004 95 713 210 272

Kameido WaterSupply Station

2007 90 295 87 112

Yagumo WaterSupply Station

2009 300

Total 1,885 1,100 324 419

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Office-like buildings “save electricity in office buildings”

In all the office buildings (workplaces) of Tokyo Waterworks,13 measures in operations, such as:・Properly temperature setting of air-conditioner・Turning off all the lights during lunch break

are fully enforced, based on “Guideline for IntroducingEnergy-Saving and Renewable Energy Related Efforts”.

At the same time, necessary updates to buildings are conducted,in order to promote energy conservation

ObjectiveObjective Electricity use in the entire office buildings is decreased by 5%as compared to 2008.

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Sedimentation basin

FilterWater purification

basin

Ozonationunit

BAC unit

Ozone Bio-Activated Carbonwater purification facilities

River

Ａ浄水場

Ｂ浄水場

Ｃ浄水場加圧

加圧

Ａ浄水場（増強）

Ｂ浄水場（縮小）

Ｃ浄水場（廃止）

加圧

代替浄水場（新設）

Replacement of water purification plants with low-carbon model

Purification Plant A

Purification Plant B

Purification Plant CBoosting

Boosting

BoostingPurification Plant C (Abolished)

Purification Plant B (Downscaled)

Purification Plant A (Strengthened)

AlternativePurification Plant

(New)

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Thank you for your attention!Thank you for your attention!

SUITEKISUITEKI--KUNKUN(Water Drop Boy, Poster boy of Tokyo Waterworks)(Water Drop Boy, Poster boy of Tokyo Waterworks)

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mitigation of global warming from tokyo wate...title microsoft powerpoint - mitigation of global...

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