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
By passing a direct current through a diluted brine solution (typically 3–5%), the following reactions occur:
The final product is sodium hypochlorite (NaClO), a powerful oxidizing disinfectant.
System Components
Module | Description |
Brine Preparation System | Mixes industrial salt with water to achieve a specific concentration. |
Electrolytic Cell | Core reaction chamber containing anode and cathode. |
Rectifier Power Supply | Provides stable DC current (e.g., 24V, 48V). |
Dosing Pump/System | Controls the dosing rate of the hypochlorite solution. |
Hydrogen Vent System | Safely discharges hydrogen gas generated during electrolysis. |
Control System (PLC) | Automates operations such as polarity reversal and dosing. |
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
Benefit | Description |
On-site Generation | Eliminates risks of storing or transporting chlorine. |
Safe Operation | Uses low-concentration brine and low voltage; no free chlorine gas is released. |
Low Operating Cost | Main consumables are salt and electricity. |
Environmentally Friendly | No heavy metal contamination. |
High Automation | Suitable for unattended or remote operation. |
Wide Application | Used in municipal, industrial, medical, and residential water systems. |
Typical Applications