Selcoperm

Overview

Overview

The Selcoperm is an electrolytic chlorination system. Using electrolysis, chlorine is produced directly from a solution of common salt using electricity, without creating any notable by-products. Typical disinfection applications for Selcoperm systems include:

  • Drinking water treatment
  • Swimming pool water treatment
  • Industrial treatment of cooling tower and process water.

 

The following reactions take place in the electrolytic cell:

2 NaCl + 2 H2O à 2 NaOH + Cl2 + H2

The chlorine produced reacts immediately with the caustic soda solution also formed, resulting in a hypochlorite solution:

Cl2 + 2 NaOH à NaCl + NaClO + H2O

The solution generated has a pH value between 8.5 and 9.5, and a maximum equivalent chlorine concentration in the range of 6-7 g/l. It has a very long half-life which makes it ideal for storage in a buffer tank. After dosing the solution into the water flow, no pH value correction is necessary, as it is often required in electrolysis according to the membrane principle. The sodium hypochlorite solution reacts in a balance reaction, resulting in hypochlorous acid, the efficient disinfectant:

NaClO + H2O à NaOH + HClO

The dosing quantity depends on the application as well as the local regulations. In general, the concentration after the injection unit is 0.3 to 2 ppm chlorine equivalent.

 

Benefits

  • Common salt is the base material – it is nontoxic and easy to store.
  • Only water, common salt and electricity is needed for the electrolysis – low operating costs, world-wide use.
  • Fresh hypochlorite is always on hand – the disinfectant solution does not dissociate like commercial hypochlorite solutions. Lower formation of chlorate as a by-product.
  • Approved disinfection method – an alternative with less safety requirements to chlorine-gas-based systems.
  • Robust elementary components – low-maintenance and a long service life, compared with the membrane cell electrolysis.




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Benefits

  • Only water, common salt and electricity is needed for the electrolysis
  • Low operating costs
  • Common salt is non-toxic and easy to store
Brochures

Brochures

 

Product brochure

Brochure -Purify your business

Product brochure
Publication No.: 96902846

Download PDF

1966 KB

Data booklet

Data booklet - Selcoperm SES

Data booklet
Publication no.: 95725540

Download PDF

1718 KB

Contact
Sales office

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Telephone

01525 850000

Fax

01525 850011

Address

Grundfos Pumps Ltd.
Grovebury Road
Leighton Buzzard
Beds. LU7 4TL

Service center

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Telephone

01942 263628

Address

Grundfos Service Ltd.
Beswick House
Greenfold Way
Leigh WN7 3XJ