400 G / H Sodium Hypochlorite Water Treatment Machine With PLC control

Principle:

Electrochlorination uses electricity to convert SALT + WATER (brine) into a mixed oxidant solution of sodium hypochlorite and hydrogen peroxide.

Evenly spaced titanium electrodes are placed in a 3% brine solution (NaCl + H2O). When a DC current is applied to the electrodes the brine acts as a conductor between the positive and negative poles. The resulting electrochemical reactions convert the brine into the sodium hypochlorite based mixed oxidant solution. The electrode reaction and solution reactions is

Electrode reaction:

at the anode: 2Cl- - 2e → Cl2；
at the cathode: 2H⁺ + 2e → H₂；
Solution reaction:

2NaOH + Cl₂ → NaCl + NaClO + H₂O

Overall reaction as follow:

NaCl + H₂O + DC →NaClO + H₂↑

The electrode reaction and solution reactions is

Electrode reaction:

at the anode: 2Cl- - 2e → Cl2；
at the cathode: 2H⁺ + 2e → H₂；
Solution reaction:

2NaOH + Cl₂ → NaCl + NaClO + H₂O

Overall reaction as follow:

NaCl + H₂O + DC →NaClO + H₂↑

The process of the sodium hypochlorite generator

The operation of the Geemblue system is simple:
1. Salt Dissolving

Influent water passes through a water softener to reduce hardness therefore reducing the scaling of electrodes. Using softened water to dissolve the salt in a tank to form a concentrated brine solution.
2. Brine Proportioning

The saturated brine will be diluted into 2.5%-3%, the diluted brine can be adjusted and real-time monitored according to the value conductivity meter

3. Brine electrolysis

The diluted brine solution is passed through an electrolytic cell that, using DC current from a rectifier, electrolyzes the diluted brine into a 0.8% solution of sodium hypochlorite
4. Sodium hypochlorite solution storage

The final product 5000-7000 ppm (adjustable) of sodium hypochlorite solution will be kept in the storage tank and the hydrogen will be blown out to the air

5. Dosing

The sodium hypochlorite solution will be delivered into the water by dosing pump and the dosing rate of dosing pump can be adjusted by the feedback data of residual chlorine meter and PLC

Main Features

1) The only raw material: salt or sea water which is safety and convenient for transportation and storage, without any volatility and toxicity.
2) Bipolar electrode connection mode, reduced the heat yield, as well greatly reduced the production of sodium hypochlorite salt consumption and power consumption
3) Salt consumption< 3.5kg / kg Cl2 (National standard 4.5); power consumption < 4kw /kg Cl2 (National standard 4.5)
4) Siemens PLC and touch screen, full automatic control

5) Cathode life >20 years; Machine life >15 years

Comparative advantages of chloridose