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Chlorine Gas Disinfection Recirculation

MAK Water’s Chlorine Gas Disinfection Recirculation (CGDR) Plants are designed to automatically maintain the correct amount of free chlorine in a potable water storage tank, in accordance with Australian Drinking Water Guidelines (ADWG). The standard treatment process includes a recirculation pump to turn over the contents of the potable water storage tank twice in a 24 hour period, an inline chlorine analyser which monitors residual free chlorine and a dosing system to automatically dose chlorine gas as required.

The system components are sized to suit the potable water storage tank and daily water usage. Options are provided for duty standby recirculation and dosing systems to improve plant reliability. MAK Chlorine Gas Disinfection Plants are available as skid mounted, or be manufactured into a purpose built container, insulated and air conditioned.

If you have specific requirements, contact us about our custom water disinfection systems.


Parameter Units CGSR-25 CGSR-100 CGSR-250 CGSR-500 CGSR-1000 CGSR-2500 CGSR-5000
Potable Water Storage Tank 25 100 250 500 1000 2500 5000
Free Chlorine Residual (target) mg/L 0.2 ~ 2 (as per Australian Drinking Water Guidelines ADWG)
Raw Water Temperature °C 15 ~ 35
Ambient Design Temperature °C 5 ~ 35 (15 ~ 30 for insulated containerised system)
Feed Water Inlet Pressure kPa > 15 (flooded suction from tank)
Recirculation Pump Flow Rate m³/hr 2.08 8.33 20.83 41.66 83.33 208.33 416.66
Recirculation Pressure kPa 100 ~ 200
Power Supply - AC 240V, 1 phase, 50Hz or AC 415 V, 3 Phase, 50 Hz
Power Consumption (approx.) kW 1 1.5 2.5 3.5 6.0 16 47
Container Size ft 20


✓= Standard Supply o = Optional Supply - = Not Applicable

Equipment CGSR-25 CGSR-100 CGSR-250 CGSR-500 CGSR-1000 CGSR-2500 CGSR-5000
Skid Mounted Plant
Recirculation Pump
Chlorine Dosing System
Amperometric Chlorine Analyser
Space for uninstalled 70kg gas cylinder
Alarm Signal Output for Client Interface
PLC Control System with HMI
Containerised System, c/w A/C & Lights o o o o o o o
Container Non-slip Floor Coating o o o o o o o
Container Insulation (walls & ceiling) o o o o o o o
Duty Standby Recirculation Pumps o o o o o o o
Duty Standby Dosing System o o o o o o o
Safety Shower & Eyewash Station o o o o o o o
Premium Instrumentation Package o o o o o o



Instrumentation Standard Package Premium Package
Pressure Gauge (recirculation pump discharge)
Pressure Switch (recirculation pump discharge)
Amperometric Chlorine Analyser (4-20mA)
Gas Cylinder Electronic Scale (with Bracket)
Chlorine Gas Leak Detector -
Automatic Shutdown on Leak Detection -
Pressure Transmitter (4-20 mA) -
Data Logger (residual chlorine) -
Remote Monitoring & Control Capabilities -

Disclaimer: MAK Water is continuously updating and improving its products and services, so please contact us for more detailed information or to confirm specifications. MAK Water takes no responsibility for any errors resulting from the use of information contained within this document.