---
title: "On-Site Sodium Hypochlorite Generators"
description: "On-site electrolytic sodium hypochlorite generators that make disinfectant from salt, water and power for drinking water and wastewater. Request a quote."
url: https://www.waste-water-equipment-factory.com/products/disinfection-equipment/
updated: 2026-11-10
---

# Disinfection Equipment

Produce safe chlorine disinfectant on site from salt, water and electricity.

An on-site sodium hypochlorite generator produces a dilute chlorine disinfectant by electrolyzing a salt solution, avoiding the transport and storage of chlorine gas or concentrated bleach. It is used by drinking water plants, wastewater treatment plants, swimming pools, hospitals and industrial cooling water systems.

## How it works

Softened water and food-grade or purified salt are mixed to make a brine, which is diluted and fed to an electrolytic cell. When direct current passes through the cell, chloride ions are oxidized at the anode to form chlorine, which immediately reacts in solution to form sodium hypochlorite. Hydrogen gas is produced at the cathode as a by-product and must be safely diluted and vented. The low-concentration hypochlorite solution, typically below 1 percent, flows to a storage tank. Dosing pumps then inject it into the water to provide disinfection and maintain a chlorine residual.

## Models

- [On-Site Sodium Hypochlorite Generator, 50–20,000 g/h](https://www.waste-water-equipment-factory.com/products/disinfection-equipment/sodium-hypochlorite-generator/): This portable sodium hypochlorite generator produces disinfectant on site at sewage treatment plants, removing the need to transport and store bulk chlorine. Capacity ranges from 50 to 20000 g/h on 220V or 380V power, with PLC control, pump and pressure vessel. It suits sewage plant operators and EPC contractors seeking a self-contained disinfection system.
- [Brine Electrolysis Hypochlorite Generator (YJE Series)](https://www.waste-water-equipment-factory.com/products/disinfection-equipment/brine-electrolysis-hypochlorite-generator/): This electrolytic sodium hypochlorite generator produces chlorine disinfectant from refined or industrial salt and water. Its electrolytic cell covers outputs from 50 g to 5000 g, runs on 220V, 380V or customized voltage, and occupies little floor space. It is built for swimming pools, hotels and power stations that want long-life, on-site disinfectant production.

## How to choose

- **Chlorine demand:** Size the generator on the flow to be treated and the required chlorine dose, expressed as available chlorine per hour or per day, including peak demand.
- **Salt and water quality:** Salt purity and water hardness affect electrode life and scaling. A softener and suitable salt grade help protect the cell.
- **Hydrogen management:** The system must safely separate and vent hydrogen. Check the degassing and ventilation design for the installation room.
- **Storage and dosing:** Consider storage tank volume for buffering demand, the number of dosing points and how dosing will be controlled.
- **Maintenance and electrode life:** Ask about electrode cleaning requirements, expected replacement intervals and the availability of spare cells.

## Applications

- Drinking water treatment and distribution
- Municipal wastewater effluent disinfection
- Swimming pools and water parks
- Hospitals and public buildings
- Industrial cooling water and biofouling control
- Food processing sanitation
- Rural and remote water supply

## FAQ

### Why generate sodium hypochlorite on site?

On-site generation avoids transporting and storing hazardous chlorine gas or concentrated bleach. It uses only salt, water and electricity, and the dilute product is more stable than commercial bleach.

### What concentration does an on-site generator produce?

Electrolytic generators typically produce a dilute solution of below 1 percent available chlorine. This is lower than commercial bleach, so larger volumes are dosed.

### Is the hydrogen by-product dangerous?

Hydrogen is flammable, so it must be separated, diluted with air and vented safely. A properly designed system includes degassing and ventilation for this purpose.

### What kind of salt is required?

High-purity sodium chloride with low impurities is recommended to protect the electrodes. Feed water is usually softened to reduce scaling in the cell.

## Contact

- Email: inquiry@waste-water-equipment-factory.com
- WhatsApp / Tel: +86 176 2154 1688
- Quotation form: https://www.waste-water-equipment-factory.com/contact/
- Company: Shanghai Mars Industrial Co., Ltd., Shanghai, China