boiler water treatment - · pdf filedeaerator boiler blowdown steam process ... can be one of...

0.4

0.8

1.6

3.2

4 %

7 %

11 %

18 %

Boiler Scale vs Fuel Efficiency Loss

Average Fuel Efficiency Loss (%)

Scale

Thick

ness

(mm

)

00

5 10 15 20

3.2 mm

1.6 mm

0.8 mm

0.4 mm

ScaleThickness

in mm

FuelLoss

%

Boiler Water Treatment

A global offer

Preventive Solutionsand Complete Treatment Programs

Corrosion, scaling and deposition can reduce the operating efficiency of the boiler and all the systems connected to the water/steam cycle of the boiler. It will reduce heat transfer rates, cause equipment and piping failure, and increase fuel costs. HydrexTM is one tool Veolia Water Solutions & Technologies offers to prevent these problems.

Industrial heating is one of the largest industrial uses of water and can require a large volumes. Veolia Water Solutions & Technologies also develops efficent water reuse solutions to produce large volumes of cost effective boiler feed water.

HydrexTM 1000 SERIES

HydrexTM range offers the 1000 Series of high performance chemicalformulations for high pressure boilers, medium and low pressure boilers, and hot water generators.

• Small < 8 T/hr (17,000 lb/hr) steam• Medium: 8 to 115 T/hr

(17,000 lb/hr to 250,000 lb/hr)• Large > 115 T/hr (250,000 lb/hr)

• Corrosion inhibitors

• Resin cleaners• Antifoams• Descalants• Dispersants

Our industrial water treatment specialists can provide you with efficient boiler feed water pretreatment technologies such as:

• Reverse osmosis to reduce chemical demand and reduce scaling and corrosion risk

• Softeners for lower pressures systems• Demineralization for high pressure systems

HydrexTM products are especially formulated to optimize the operation of boilers:

• Internal treatment with control of scale forming minerals, sludge conditionners, pH and oxygen scavengers

• Condensate steam treatment with HydrexTM specialty chemicals

www.veoliawaterst.com/hydrex


A Global Packaged Offeringfor Boiler Water Treatment

Veolia Water Solutions & Technologies can provide you with an efficient and complete boiler treatment program, including HydrexTM 1000 Series, the high performance chemical product line for boiler and heating applications.

>>> Enhancing / restoring efficiency of boilers>>> Maintaining boiler integrity>>> Ensuring safe and cost-effective operation

HydrexTM is available worldwideContact your local Veolia representative for more information.

Deaerator

Boiler

Blowdown

Steam Process

Pretreatment(Softeners, reverse osmosis, ...)

Condensatereturns

Condensatereceiver

HydrexAmine feedHydrex

Internaltreatment

HydrexOxygen scavenger

Boiler Treatment Program

Cooling Water Treatment

A total solution

Preventive Solutionsand Complete Safety Programs

Scale deposit, corrosion, fouling and biological proliferation can cause system downtime, loss of equipment efficiency, replacement of equipment, and can increase the risk of disease from pathogenic micro-organisms. In addition to supplying water treatment equipment, Veolia Water Solutions & Technologies provides a set of services allowing us to guarantee the reliable running of all your cooling water installations.

The VWS industrial water treatment specialists can provide you with:

• Sidestream filtration technologies from multimedia filters to membranes• Chemical feed• Control of cycles (scale and corrosion control devices) and chemical level for your cooling systems.

Industrial cooling is one of the most widely used industrial processes, and requires large volumes of water. VWS develops efficent water reuse solutions to produce large volumes of cooling make-up water for less cost to industries.


Hydrex™ range offers two advanced series of high performance chemical formulations for the treatment of open and closed cooling systems.

Hydrex™ 2000 series • Scale Inhibitors: phosphorus and

non-phosphorus based products, homopolymeric dispersants and high performance polymers

• Corrosion inhibitors: anodic , cathodic, organic

• Biodispersants• Cooling tower cleaning agents

Hydrex™ 7000 series• Oxidizing and non-oxidizing

biocides for Legionella control and bio-fouling

• Closed systems from less than 100 m3/hr to 550 m3/hr• Open systems from 250 m3/hr to more than 100,000 m3/hr

2000 SERIES

7000 SERIESHydrexTM

HydrexTM

Coolingtower

HeatExchanger

PROCESS

ControllerBlowdown

Makeup

Hydrex Treatment

Hydrex Treatment

Pump


A Global Packaged Offeringfor Cooling Water Treatment>>> Enhancing / restoring efficiency of cooling water systems>>> Maintaining cooling water systems integrity>>> Ensuring safe and cost-effective operation

HydrexTM provides the Legionella program to secure your facility and process: methodical analysis of risks, revamping of cooling water systems in accordance with regulation, analytical survey, technical assis-tance, cleaning of cooling towers and circuits, training, preventive treatment, extensive research & development programs, …

An example of aCost Effective ProgramFor a closed circuit equipped with cooling towers• Make-up water is: surface water, Ryznar Index 6, untreated water. • Fouling of the packing had been observed after a few years of operation. • The client had to decrease temperature of the circuit to avoid fouling.

Production losses were very important.• With HydrexTM, the annual cost of treatment now represents only 10 %

of the previous loss of production per year.


Cooling Treatment Program

Legionella Control

Protection of your RO plants

Preventive Solutions and Safety Programs

The HydrexTM 4000 range is approved by leading international membrane manufacturers for use with their products.

• Scale inhibitors- Phosphonate - Polycarboxylic polymers,

sulfonated polymers

• Biocides- Isothiazolone, DBNPA

• Cleaning- Alkaline cleaners, acidic cleaners


The HydrexTM 4000 range is specifically formulated for membrane treatment systems. The HydrexTM products keep the membranes free of scale and bacterial growth and aid in extending membrane life. HydrexTM chemicals optimize operational costs, protect the expensive membrane modules and ensure smooth, efficient operation.

Veolia Water Solutions &Technologies offers the right HydrexTM range including chlorination and de-chlorination agents,disinfectants, antiscalants and cleaners for all types of membranes:

• Reverse osmosis• Nanofiltration• Ultrafiltration• Microfiltration

Example of HydrexTM products:• HydrexTM 4101 is a scale inhibitor for calcium carbonate

and calcium sulphate.• HydrexTM 4102 is a scale inhibitor for calcium carbonate.• HydrexTM 4109 is a scale inhibitor for water

with high silica content.

4000 SERIES

HydrexTM 4101, 4102, 4103, 4105, 4109 products are ANSI/NSF60 approved.

HydrexTM


A Global Packaged Offeringfor Reverse Osmosis


>>> Specific software for RO applications• Balancing the ionic composition of the feed water• Determining scaling potential of various salts at designed recovery and pH • Offering options of HydrexTM products to be used to prevent scale formation• Defining dosage of chosen HydrexTM product • Generating final report.

>>> Membrane autopsyThe physical dissection of an RO membrane and the laboratory analysis of its foulants can be one of the most definitive methods of troubleshooting an RO system. A HydrexTM autopsy includes a wide range of procedures.

>>> Test rig for selection of cleaners• Proposing preventive/ corrective cleaning sequences adapted to fouling.

>>> Laboratory services

• External and internal visual examination• Test of the element performance• Chemical identification of the surface foulants• Loss on ignition test• Cell and dye test• Summary and recommandation

20006000

9000

Recovery tank20 m3

(drainage from the scrubbers, wash water, filtrates from

the filter press)

Preneutralization tank6.6 m3

Coagulant + Lime

Returned to pH3 m3

Hydrochloric acid

Cooling of the effluents2 plate exchangers

DischargeCheck pH, temperature

and flow rate

Neutralization tank6.6 m3

Lime + Insolubilizer

Flocculation tank5.05 m3

Flocculant

Decantation52.2 m3

Static thickener32 m3

Filter press

Recirculation of sludge

Removal of sludge

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