Advanced water treatment chemicals and industrial solutions

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WS^® 8640 is a synergistic blend of maleic acid polycarboxylates and organic sequestring agents of ATMP type.

It is recommended for deposit inhibition in industrial water systems like recirculating cooling systems, cooling towers, waste water streams facing deposition problems etc.

Almost mineral scales can be inhibited by WS 8640 like Calcium Carbonate, Fe and Mn based scales, CaF2 etc.

WS 864X' products have been designed to protect unstable cooling water systems.

It is a mater of new generation chemicals.

We characterize as unstable the cooling systems, where the cooling load fluctuates more than 25%, betweeen minimum and maximum yearly operating.

Normally such a system presents low inertia to absorb those load variations, and additionally the total water volume is low ( normally below 500 cubic meters).

The unstable systems are normally operating in elevated pH, high concentration factor. Common problems are hard scale deposition, moderate corrosion, frequent acid cleaning requirements, microbiological control upsets.

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 Features

 WS^® 8640 is a very concentrated, synergistic blend resulting in low dose rates and normal use cost.

It is chlorine stable, but not Chlorine Dioxide resistant.

Under such conditions WS 8641 should be preferred.

 WS^® 8640 is suitable for use in waters containing high solids amounts.

 WS^® 8640 has low Phosphorous content, making its use acceptable in environmentally sensitive areas.

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Continuous feeding at 5-25 ppm of   WS^® 8640 is recommended for most applications. However, optimum dosage will depend on the nature and severity of fouling and the operational parameters of the cooling system.

WS^® 8640 is an acidic material and therefore corrosion resistant feeding equipment should be used.

When application occurs to unstable or load fluctuating cooling water system, analog feeding device is recommended.

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Application limits

WS^® 8640 can be freely used under extremelly severe and difficult operationg conditions, in hard or soft,  city, ground or surface or even in recycled waste water, in pH values up to 9,4, hardness presence up to 2000 ppm as CaCO3, and specific conductance above 15000 microsiemens.

Under such extremely condititons, please contact us as to define the proper application dossage.

Contact Information

Telephone   +3010 6394739

FAX +3010 6396591

Postal address 465 Messogeion Ave 15343 Athens GREECE

Electronic mail

General Information, Sales &  Customer Support:ws@freemail.gr

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Reference 1

Conventional scale inhibitors cannot be effective over pH 8,8 and total alkalinity values over 400 ppm without acid feed. The total hardness of more than 1000 ppm as CaCO3 is also prohibiting.

• Use of  WS^® 8640 at 25 ppm.

Temperature and pressure decrease is observed on the freon circuit in both systems , after 25 days of application.

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Reference 2

Maximum temperature (skin temperature) : about 700 ^οC

Shut down requirements every three weeks for repairs of damaged internally cooled devices.

On-line chemical cleaning under weekly basis (Hydrochloric acid injection).

Use of  WS^® 8640 at 50 ppm.

No shut-down for three months period. No acid injection at the same time.

Feeding of  WS^® 8640 was interrupted for treatment efficiency confirmation.

Necessity for shut-down was arrised seven days after the interruption of the treatment.

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Why WS^®8640 in your cooling system.

• Protect your cooling tower circuit from deposits and corrosion. Eliminates acid cleaning, production losses and maintainance requirements.
• Limited monitoring requiremens and zero system adjustements.
• Simultaneous scale and corrosion inhibition.
• Concervation of water due to high cycles of operation (normally 16).
• We can use quite any available water source, including hard, ground, surface or clarified waste water.
• Minimal personel attention. Absolutelly safe.
• All organic, non polluting at all product, safe for the personell, the plant and the environment.
• Cost peanuts.

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Available training, information and safety CD, according  93/115/ΕΕ requirements.

Treatment and training manuals available

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