Chloride-free sodium hydroxide and hydrogen are produced in the cathode chamber and ultrapure chlorine gas and scaled down residual brine in the anode chamber separated by the membrane. The resulting chlorine gas is suctioned off through an injector included in the scope of delivery and dissolved in the water to be treated as hypochloric acid. The chloride-free sodium hydroxide is stored intermediately and can be transferred into the water through the same injector to adjust the pH value. To achieve this, an external pH value controller is directly connected to the plant's control. The generated hydrogen is diluted with fresh air through an ATEX-certified ventilator and discharged safely, the scaled down residual brine is disposed of. The salt dissolving water comes from a softener integrated in the plant. Thus, lime deposits can be prevented and a long service life of the electrolytic cell can be ensured. The efficiency of the electrolysis is monitored by an integrated pH measurement of the sodium hydroxide production.
The plants are controlled with a modern PLC with large, illuminated display and integrated modem for remote diagnosis and troubleshooting. The chlorine metering and the pH value correction are controlled as standard through contact inputs; analogue inputs are optionally available.
Advantages
Robust technology
Compact, space-saving design
Safe vacuum plant technology
Production and metering of ultrapure hypochloric acid without intermediate storage
Chlorination and pH value adjustment with one single plant
Economic operation thanks to the inexpensive raw material sodium chloride and less chemical consumption for pH value adjustment
Application areas
suitable for all applications which require metering of hypochloric acid with simultaneous pH value correction
Features
Electrolysis plant mounted ready for operation on a powder-coated stainless steel frame with programmable logic controller (PLC) in control cabinet
integrated softener
electrolytic cell
pH value monitoring of electrolysis
ATEX-certified bleeding system and side salt dissolving tank with level monitor
The scope of delivery also includes a central injector system matched to the plant to meter chlorine gas and sodium hydroxide, inclusive of a booster pump
Automatic monitoring of the water hardness downstream of the softener and chlorine gas detector for plants from 600 g/h
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