Sodium Hypochlorite Generator |Water Disinfection Equipment | Electrolytic Chlorine Production Unit

Working Principle The unit first softens tap water and mixes it with refined salt to make a dilute brine, which is then fed into the electrolytic cell. Once DC power is applied, the anode produces chlorine gas, while the cathode produces hydrogen gas and sodium hydroxide. The chlorine gas reacts with the sodium hydroxide to form sodium hypochlorite. The whole process runs continuously in a non-diaphragm electrolytic cell, and the resulting sodium hypochlorite solution has a stable concentration. It can be dosed directly or stored in a tank for dosing as needed. Hydrogen gas produced during electrolysis is vented through a discharge pipe, diluted, and safely released. The control system monitors brine concentration, cell temperature, and liquid level to keep chlorine output steady. It's produced and used on demand, so there's no need to store hazardous chemicals. Application Fields 1.Drinking water treatment: disinfection for water plants and community water supply. 2.Hospital wastewater: disinfection of bacteria-laden sewage to meet discharge standards. 3.Industrial circulating water: bacteria and algae control in power, chemical, and metallurgy plants. 4.Wastewater treatment: disinfection for domestic sewage and reclaimed water reuse. FAQ Q1: What raw materials does a sodium hypochlorite generator use? A: Mainly refined salt, water, and electricity. For drinking water disinfection, non-iodized edible salt with a sodium chloride content of at least 98.5% is required. The feed water should be tap water or soft water—not sewage or reclaimed water. The raw materials are simple, and there's no need to buy finished sodium hypochlorite, which avoids the transport and storage risks of hazardous chemicals. Q2: Why do the electrodes scale up, and how is it handled? A: Water contains calcium and magnesium ions, which deposit on the electrode surface during electrolysis and form scale. Scaling reduces electrolysis efficiency and lowers chlorine output. The fix is regular acid cleaning—soaking the electrodes in dilute hydrochloric acid or citric acid to dissolve the scale, then rinsing with clean water. In hard water areas, monthly cleaning is recommended. Keep an eye on the cell temperature too, so scale doesn't build up and burn out the electrodes. Q3: What are the advantages of a sodium hypochlorite generator over buying sodium hypochlorite solution? A: On-site generation gives you a stable concentration that's used right away, unlike bought solution, which slowly decomposes and loses available chlorine during storage. Commercial sodium hypochlorite is usually around 10% concentration and classified as a hazardous material, so transport and storage come with safety requirements. A generator only needs salt, which is non-toxic, making it much safer. Operating costs are lower too—over the long run, it's cheaper than buying finished solution.