Sodium Hypochlorite Generator for Disinfection / Water Treatment

Sodium Hypochlorite Generator for Disinfection / Water Treatment

What is a Sodium Hypochlorite Generator?

A sodium hypochlorite generator is a device that electrolyzes brine (NaCl solution) to produce sodium hypochlorite (NaClO) on-site. It is widely used in disinfection, water treatment, and environmental sanitation.

Working Principle

Electrochemical Reactions:

By passing a direct current through a diluted brine solution (typically 3–5%), the following reactions occur:

At the Anode (Oxidation):

$$2C{l}^{-}\to C{l}_2(gas)+2e^{-}$$

At the Cathode (Reduction):

$$2H_{2}O+2e^{-}\to H_2(gas)+2O{H}^{-}$$

Sodium Hypochlorite Formation:

$$C{l}_2+2O{H}^{-}\to C{l}^{-}+Cl{O}^{-}+H_{2}O$$

The final product is sodium hypochlorite (NaClO), a powerful oxidizing disinfectant.

System Components

Anode Material Features

The anode typically uses a titanium substrate (e.g., GR1/TA1) coated with MMO (Mixed Metal Oxides) such as ruthenium and iridium oxides.

Key advantages:

• Excellent stability and corrosion resistance

• High electrocatalytic activity

• Supports polarity reversal to extend electrode lifespan

Advantages

Typical Applications