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Chemical ClO2 generator comparison vs. Electrolysis ClO2 generator

Chemical ClO2 generator comparison vs. Electrolysis ClO2 generator

2017-10-19

Items

Chemical ClO2 generator

Electrolysis ClO2 generator

Principle

Chemical reaction produce high purity of ClO2

Electrolyze Sodium chloride and water produce ClO2, Cl2 mixed Disinfectant

Reaction equation

5NaClO2+4HCl=4ClO2+ 5NaCl+2H2O

NaCl+H2O=NaOH+ClO2+H2↑or 2NaClO2+2H2O=2NaOH+2ClO2+H2

Cost of investment

Raw material

Sodium chlorite, HCl (Hydrochloric acid)

Sodium chloride, or sodium chlorite

Generator components

Chemicals storage tank, metering pumps

Reactor

Dosing device

Electric control apparatus

Electrolytic cell

DC supply

Sodium chlorite dissolving and storage tank

Wearing parts

Long life

Short life for electrodes and often need maintenance and replacement. Electrode is easy to be damaged and maintenance cost is high.

Advantages & disadvantages

Raw materials

Expensive

Cheap and easy to get in the market.

but contain more impurities which will cause large byproducts, low current efficient

Structure

Simple in structure

Complexity in structure

Convenience

Easy in installation, operation and maintenance

Complexity in installation, operation and maintenance

Volume

Occupy a smaller area.

Occupy a larger area and easy to erode to operation room

Security

Safe and reliable

Electrode discharge will cause electrolytic cell burst

Consumption

Low power consumption

High power consumption, high salt consumption

Capacity

High

almost the same as chlorine gas, and lower than Chlorine Dioxide

Application

Apply to small, medium, large-scale use of occasion

Apply to small-scale use of occasion


Cpf D 7


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