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On-site disinfection

Sodium Hypochlorite Generator

An on-site generation system that prepares low-concentration sodium hypochlorite from salt, water and electricity for a selected water or wastewater disinfection duty.

  • 16 KSCI models
  • 50-50,000 g/h available chlorine output
  • 0.6-0.9% generated solution concentration
  • Integrated automatic control

Product overview

On-Site Disinfectant Generation from Brine Electrolysis

A product-level view of the on-site generation duty, brine electrolysis process and KSCI model range.

The KUOSI sodium hypochlorite generator prepares disinfectant on site from softened water, refined salt and electricity. The process avoids routine dependence on transporting and storing concentrated finished sodium hypochlorite for the selected disinfection duty.

Tap water is softened before part of the stream is used to dissolve salt and prepare brine. The brine is diluted and metered to the electrolyzer, where the electrochemical reaction produces a low-concentration sodium hypochlorite solution. The generated solution is collected in a storage tank and dosed to the defined treatment point.

The KSCI series includes 16 models with available-chlorine output from 50 to 50,000 g/h. Final selection still requires the maximum treated-water flow, required dose, water quality, operating schedule, redundancy, site utilities and the approved project data sheet.

The UK Drinking Water Inspectorate chlorine-disinfection guide independently explains on-site sodium hypochlorite generation by brine electrolysis, including its principal equipment train, dosing control and hydrogen-ventilation requirement.

Functional mapEquipment-level view
  1. 01

    Water softening

    Reduces calcium and magnesium before water enters brine preparation and the electrolysis train.

  2. 02

    Salt dissolution and brine preparation

    Dissolves refined salt and supplies the selected brine concentration to the metering stage.

  3. 03

    Brine dilution and metering

    Combines brine and softened water at the required feed condition before electrolysis.

  4. 04

    Electrolysis assembly

    Uses the electrolyzer and rectifier to produce sodium hypochlorite solution from the prepared brine.

  5. 05

    Storage and hydrogen ventilation

    Collects generated solution and routes hydrogen through the designed ventilation and monitoring arrangement.

  6. 06

    Dosing and cleaning

    Transfers solution to the treatment point and provides the required acid-cleaning connection for the electrolyzer.

Engineering advantages

Why Use a Sodium Hypochlorite Generator?

Evaluate the equipment through operating implications, not decorative feature claims.

  1. 01

    On-site production

    Generates low-concentration sodium hypochlorite at the treatment site from refined salt, water and electricity.

  2. 02

    Resource-consumption references

    Salt consumption is below 3.2 kg and power consumption is below 4.0 kWh per kilogram of available chlorine under the defined operating basis.

  3. 03

    Modular equipment arrangement

    An integrated modular design simplifies equipment installation and maintenance.

  4. 04

    Automatic control

    Central control provides monitoring and operating functions for the generation system.

  5. 05

    Defined solution strength

    The generated available-chlorine concentration is 6,000-9,000 ppm, equivalent to 0.6-0.9%.

  6. 06

    Broad output range

    The KSCI model range covers available-chlorine output from 50 g/h to 50,000 g/h across integrated and multi-unit configurations.

Applications

Typical Sodium Hypochlorite Generator Applications

Water quality, dose demand, residual target and site requirements must be confirmed before selecting the system for these duties.

01

Municipal waterworks

On-site disinfectant generation for a defined drinking-water treatment and distribution duty.

Confirm maximum water flow, required dose, contact conditions and residual-control basis.

02

Wastewater treatment plants

Disinfectant supply for final municipal or industrial wastewater disinfection.

View containerized wastewater treatment

Provide effluent quality, peak flow, dose demand and discharge or reuse requirements.

03

Reclaimed-water systems

Sodium hypochlorite generation for a selected reuse-water disinfection step.

Confirm reuse standard, contact time, residual target and downstream compatibility.

04

Food processing

Disinfection support for water and sanitation duties defined by the facility process.

Separate process-water, surface-sanitation and wastewater duties and confirm the applicable hygiene standard.

05

Chemical processing

On-site oxidant or disinfectant supply for a project-specific water-treatment duty.

Review chemical compatibility, demand variability, ventilation and hazardous-area requirements.

06

Power generation

Disinfection of circulating-cooling-water or other selected plant water systems.

View power plant cooling-water project

Provide circulation flow, make-up water, biological-control target and operating schedule.

07

Cooling-water systems

Controlled sodium hypochlorite supply for a defined cooling-water microbiological-control duty.

Confirm continuous or shock dosing, residual monitoring and materials compatibility.

08

Healthcare facilities

Disinfection support for a defined water or wastewater treatment system.

Confirm the regulated duty, water quality, required residual and site safety controls.

Performance

Key Operating Parameters

The table presents process indicators. They are technical references, not guaranteed project performance.

ParameterValue / rangeEngineering note
Available-chlorine output50-50,000 g/hRange across the 16 KSCI models; select from the calculated maximum hourly requirement.
Dilute brine concentration3% referenceFinal preparation and control arrangement must follow the approved system design.
Generated solution concentration6,000-9,000 ppm (0.6-0.9%)Verify the project operating basis and measurement method for this available-chlorine concentration.
Salt consumption<3.2 kg/kg available chlorineThis technical indicator depends on the defined operating basis and approved salt quality.
Power consumption<4.0 kWh/kg available chlorineThis technical indicator covers generation; total system energy depends on the final auxiliary-equipment scope.
Current efficiency>78%The defined operating conditions and approved equipment configuration apply.
Electrode materialTitanium with mixed rare-metal oxide anode coatingConfirm the selected cell and coating specification in the approved data sheet.
Control arrangementCentral automatic control with monitoringLarger systems can support central control and remote monitoring; final PLC, HMI and communication scope is project-specific.

Working principle

How the Sodium Hypochlorite Generator Works

The sequence runs from water softening and brine preparation through electrolysis, storage, hydrogen ventilation and controlled dosing.

Process flow diagram showing salt dissolving, water softening, electrolysis, sodium hypochlorite storage, dosing, hydrogen exhaust, and acid cleaning
Visual referenceApproved sodium hypochlorite generation process flow diagram

This approved diagram shows the process arrangement. Final equipment interfaces and instrumentation depend on the project scope.

  1. 01

    Water softening

    Tap water passes through the water softener before entering the generation process.

  2. 02

    Salt dissolution

    A portion of softened water dissolves refined salt to prepare the brine supply.

  3. 03

    Dilution and metering

    Brine and softened water are combined at the selected feed condition and transferred to the electrolyzer.

  4. 04

    Electrolysis

    Direct current drives the electrochemical reaction that forms sodium hypochlorite solution and hydrogen.

  5. 05

    Storage and ventilation

    Generated solution enters the storage tank while hydrogen is routed through the designed exhaust system.

  6. 06

    Controlled dosing

    A dosing pump transfers sodium hypochlorite solution to the defined treatment point under the selected control strategy.

Learn more about water disinfection

Equipment video

See the Sodium Hypochlorite Generator in Operation

View the GL Environment introduction to a sodium hypochlorite generator and connect the equipment shown with the on-site generation process described on this page. The video is useful for understanding the packaged system and its role within a disinfection train. It is not presented as proof of a specific plant result. Generator capacity, available-chlorine concentration, salt and water demand, dosing duty and safety provisions require confirmation for the selected project conditions.

What to look for

  • The packaged equipment used for on-site sodium hypochlorite generation.
  • How the generator fits into a wider storage, dosing and disinfection system.
  • Which capacity, feed and safety details still require project-specific confirmation.
Watch on the GL Environment YouTube channel
Playback starts only after you choose to play. The cover image is supplied by the GL Environment YouTube video.

System configuration

Typical On-Site Sodium Hypochlorite Generation System

The generation duty combines softened-water supply, salt dissolution, brine preparation, rectification and electrolysis, solution storage, hydrogen management, dosing, cleaning and control.

Rendered open sodium hypochlorite generator cabinet showing internal piping, electrolyzer assemblies, controls, and an adjacent tank
System referenceStandard cabinet configuration with internal process equipment

Final interfaces and included equipment are defined by the agreed project scope.

Before releaseConfiguration decisions to confirm
  1. 01

    Required chlorine output

    Calculate the maximum hourly available-chlorine requirement from treated-water flow and the approved dose basis.

  2. 02

    Inlet-water conditions

    Confirm water source, pressure, hardness, temperature and the required softening or pretreatment duty.

  3. 03

    Salt specification

    Confirm refined-salt quality, delivery, storage capacity and the selected salt-dissolving arrangement.

  4. 04

    Operating and standby philosophy

    Define operating hours, peak duty, turndown, redundancy and the required storage autonomy.

  5. 05

    Dosing and residual control

    Define dosing points, pump duty, residual measurement, flow pacing and plant interlocks.

  6. 06

    Hydrogen management

    Provide the required ventilation route, detection, alarms and installation-area safety controls.

  7. 07

    Electrical and automation scope

    Confirm voltage, frequency, PLC/HMI, communications, remote monitoring and plant-control interfaces.

  1. W1

    Tap-water inlet

    The incoming water supply enters the softening stage.

  2. W2

    Water softening

    The softener prepares water for brine dilution and the electrolysis train.

  3. B1

    Salt-dissolving system

    Refined salt and softened water prepare the brine feed.

  4. E1

    Electrolysis system

    The rectifier and electrolyzer convert prepared brine into sodium hypochlorite solution.

  5. S1

    Solution storage

    The storage tank receives generated sodium hypochlorite before dosing.

  6. V1

    Hydrogen ventilation

    The ventilation and monitoring arrangement routes hydrogen away from the system.

  7. D1

    Dosing system

    The dosing pump supplies the selected treatment point under the approved control logic.

  8. C1

    Acid-cleaning system

    The cleaning circuit supports the approved electrolyzer maintenance procedure.

Main equipment

  • KSCI-Series Sodium Hypochlorite Generator

Supporting / optional equipment

  • Water Softener
  • Soft-Water Tank and Pump
  • Salt-Dissolving Tank
  • Brine Metering Pump
  • Rectifier and Electrolyzer Assembly
  • Sodium Hypochlorite Storage Tank
  • Dosing Pump
  • Hydrogen Exhaust and Detection
  • Acid-Cleaning Tank and Pump
  • PLC Control Cabinet

Technical data

KSCI Models & Technical Specifications

The range covers 16 KSCI models in small integrated and larger multi-unit configurations. Values are technical references rather than guaranteed project performance; confirm model nomenclature, supply voltage and frequency, auxiliary-equipment power, materials and final dimensions in the approved project data sheet.

Scroll horizontally to review all technical fields on smaller screens.

ModelElectrolysis configurationAvailable chlorineWater consumptionSalt consumptionAC powerL × W × H
KSCI-50Integrated except salt tank50 g/h0.15 m³/d4.2 kg/d0.3 kW1225 × 700 × 2015 mm
KSCI-100Integrated except salt tank100 g/h0.3 m³/d8.4 kg/d0.6 kW1225 × 700 × 2015 mm
KSCI-200Integrated except salt tank200 g/h0.6 m³/d16.8 kg/d1.2 kW1225 × 700 × 2015 mm
KSCI-300Integrated except salt tank300 g/h0.9 m³/d25.2 kg/d1.8 kW1225 × 700 × 2015 mm
KSCI-400Integrated except salt tank400 g/h1.2 m³/d33.6 kg/d2.4 kW1225 × 700 × 2015 mm
KSCI-500Integrated except salt tank500 g/h1.5 m³/d42 kg/d3.0 kW1225 × 700 × 2015 mm
KSCI-10002 × 500 g/h1,000 g/h3 m³/d84 kg/d4.7 kW1225 × 700 × 2015 mm
KSCI-20002 × 1,000 g/h2,000 g/h6 m³/d168 kg/d9.4 kW2650 × 1000 × 1930 mm
KSCI-30002 × 1,500 g/h3,000 g/h9 m³/d252 kg/d14.1 kW2650 × 1000 × 1930 mm
KSCI-50002 × 2,500 g/h5,000 g/h15 m³/d420 kg/d23.5 kW2650 × 1000 × 1930 mm
KSCI-60002 × 3,000 g/h6,000 g/h18 m³/d504 kg/d28.2 kW2650 × 1000 × 1930 mm
KSCI-100002 × 5,000 g/h10,000 g/h30 m³/d840 kg/d47 kW2650 × 1000 × 1930 mm
KSCI-150002 × 7,500 g/h15,000 g/h45 m³/d1,246 kg/d70.5 kW3174 × 1000 × 2200 mm
KSCI-200002 × 10,000 g/h20,000 g/h60 m³/d1,680 kg/d94 kW3174 × 1000 × 2200 mm
KSCI-300003 × 10,000 g/h30,000 g/h90 m³/d2,520 kg/d141 kW3174 × 1000 × 2200 mm
KSCI-500004 × 12,500 g/h50,000 g/h150 m³/d4,200 kg/d235 kW3800 × 1400 × 3500 mm

Equipment selection

How to Select the Right Sodium Hypochlorite Generator

Selection begins with maximum treated-water flow and the approved available-chlorine dose, then accounts for operating schedule, redundancy, water quality, dosing and site conditions.

  1. 01

    Maximum treated-water flow

    Provide the maximum hourly flow for each dosing point and the expected daily operating profile.

  2. 02

    Available-chlorine dose

    Define the normal and peak dose basis in g/m³ or mg/L from verified water-quality and disinfection requirements.

  3. 03

    Required hourly output

    Calculate the maximum hourly requirement from treated-water flow multiplied by the approved available-chlorine dose.

  4. 04

    Water and salt quality

    Provide inlet-water pressure, hardness, temperature and the proposed refined-salt specification.

  5. 05

    Operating schedule and redundancy

    Confirm operating hours, peak periods, standby philosophy and required solution-storage autonomy.

  6. 06

    Dosing and monitoring

    Identify dosing points, residual targets, flow signals, analyser signals and required control interlocks.

  7. 07

    Installation environment

    Confirm footprint, ventilation route, drainage, ambient conditions, electrical supply, access and hazardous-area requirements.

Manufacturing & installation evidence

Real Sodium Hypochlorite Generator Equipment Views

These approved images show sodium hypochlorite generator equipment and installation contexts. They are not presented as quantified customer case studies.

Engineering support

From Equipment Selection to System Integration

Support is presented as a practical engineering workflow, without unverified company statistics or outcome claims.

  1. 01

    Disinfection-duty review

    Review flow, dose, residual, water quality and operating conditions before equipment selection.

  2. 02

    Generator sizing

    Calculate the required available-chlorine output and evaluate the appropriate KSCI model and redundancy arrangement.

  3. 03

    System configuration

    Define water softening, salt dissolution, storage, dosing, hydrogen ventilation, cleaning and control interfaces.

  4. 04

    Technical documentation

    Prepare the applicable equipment data, process information and installation requirements for the agreed scope.

  5. 05

    Commissioning guidance

    Provide the applicable installation, startup, dosing-control and maintenance guidance for the approved system.

Technical FAQ

Sodium Hypochlorite Generator Frequently Asked Questions

The answers separate general selection logic from the values that require a project-specific technical review.

01How does an on-site sodium hypochlorite generator work?

The system softens water, dissolves refined salt, prepares dilute brine and meters it to an electrolyzer. Direct current produces a low-concentration sodium hypochlorite solution, which is stored and dosed to the selected treatment point while hydrogen is routed through the designed ventilation system.

02What output range is available?

The 16 KSCI models provide available-chlorine output from 50 g/h to 50,000 g/h. Final selection requires the maximum treated-water flow, approved dose, operating schedule, redundancy and site conditions.

03What concentration does the system produce?

The available-chlorine concentration reference is 6,000-9,000 ppm, equivalent to approximately 0.6-0.9%. Confirm the project operating basis and measurement method in the approved data sheet.

04How much salt and electricity are required?

Reference consumption is below 3.2 kg of salt and below 4.0 kWh of power per kilogram of available chlorine. Total project consumption depends on the selected model, water conditions and auxiliary-equipment scope.

05How is the required generator capacity calculated?

Multiply maximum treated-water flow by the available-chlorine dose to determine the required hourly output. Dose demand, operating hours, redundancy and storage autonomy must also be confirmed.

06What supporting equipment is normally required?

A typical system can include water softening, soft-water storage, salt dissolution, brine metering, rectification and electrolysis, sodium hypochlorite storage, dosing, hydrogen ventilation and detection, acid cleaning and PLC controls. The final scope is project-specific.

07How is hydrogen produced during electrolysis managed?

Hydrogen produced during generation is routed through a designed ventilation system. Hydrogen detection, alarms and other safeguards are defined as part of the agreed system and installation scope. The ventilation route, detection arrangement, controls and site safety requirements must be confirmed for the specific project and approved design.

08Where can the system be applied?

Applications include municipal waterworks, wastewater treatment, reclaimed-water systems, food processing, chemical processing, power generation, circulating-cooling-water systems and healthcare facilities. Suitability and dose must be confirmed for the actual water and regulatory duty.

09What information is needed for selection?

Provide water source, average and peak flow, required dose and residual, inlet-water conditions, salt quality, operating schedule, dosing points, electrical supply, control interfaces, installation space, drainage and ventilation requirements.

Engineering inquiry

Need Help Selecting the Right Sodium Hypochlorite Generator?

Share your water source, maximum flow, chlorine dose, residual target, operating schedule, inlet-water conditions and site requirements. KUOSI can use the available data to evaluate the appropriate generator duty and system configuration.

Project inquiry

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