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Sodium Hypochlorite Disinfection – Recirculated

MAK Water’s Sodium Hypochlorite Disinfection Recirculated (SHDR) 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 pump to automatically dose liquid sodium hypochlorite 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 pumps to improve plant reliability. MAK Sodium Hypochlorite Disinfection Recuirculated plants are available skid mounted for installation inside a building, or containerised with air conditioning to avoid chlorine degradation.

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



Parameter Units SHDR-25 SHDR-100 SHDR-250 SHDR-500 SHDR-1000 SHDR-2500 SHDR-5000
Potable Water Storage Tank 25 100 250 500 1,000 2,500 5,000
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 415V, 3 phase, 50 Hz AC 415V, 3 phase, 50Hz
Power Consumption (approx.) kW 1 1.5 2.5 3.5 6 16 47
Bunded Hypo Tank Size
(approx. based on monthly refill)
L 60 60 100 200 300 1000 1500
Container Size (optional) ft 10 10 10 10 10 10 20


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

Equipment SHDR-25 SHDR-100 SHDR-250 SHDR-500 SHDR-1000 SHDR-2500 SHDR-5000
Skid Mounted Plant
Recirculation Pump
Sodium Hypochlorite Dosing Pump
Bunded Sodium Hypochlorite Storage Tank
Chlorine Analyser
PLC Control System with HMI
Alarm Signal Output for Client Interface
Containerised System, c/w A/C & Lights o o o o o o o
Container Non-slip Floor Coating 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 Pumps 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 o


Instrumentation Standard Package Premium Package
Pressure Gauge (recirculation pump discharge)
Pressure Switch (recirculation pump discharge)
Float Switch (chlorine storage tank)
Chlorine Analyser (4-20mA)
Level Transmitter (4-20 mA, hypo tank level) -
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.