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pH Adjustment – Flow Paced

MAK Water’s pH Adjustment – Flow (PAF) plants are designed to automatically adjust and maintain the pH level of pressurised raw water prior to discharge to sewer/envrionment or reuse/recycling. The standard treatment process includes an inline pH analyser which monitors the pH level and a dosing pump to automatically dose liquid alkali/acid. Dual chemical dosing pumps (alkali/acid) are available for when the raw water pH varies to allow for correction of both low and high pH raw water.

The system components are sized to suit the raw water flow rate and daily usage. Optional equipment upgrades include; a flow transmitter, a static mixer if required to improve mixing, duty standby dosing pumps, dual chemical dosing pumps (alkali/acid). MAK PAF plants are available as skid mounted or containerised systems for easy deployment to remote locations.


Parameter Units PAF-60 PAF-100 PAF-200 PAF-500 PAF-1000 PAF-2500 PAF-5000
Chemical Storage Tank Size L 60 100 200 500 1,000 2,500 5,000
pH Level (target) pH 6 ~ 8 (pH neutral) or as required
Raw Water Temperature  °C 15 ~ 35
Ambient Design Temperature °C 5 ~ 45 (-5 ~ 50 for insulated containerised system)
Raw Water Flow Rate (max) m³/hr 1,000 (higher flow available on request)
Raw Water Pressure (max) kPa 600 (higher pressure available on request)
Power Supply - AC 240V, 1 phase, 50Hz
Power Consumption (approx.) kW 0.5
Container Size (optional) ft 10 10 10 10 10 20 20
Skid Size mm 1,300 x 600 x 1,500 2,000 x 1,500 x 1,500


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

Equipment PAF-60 PAF-100 PAF-200 PAF-500 PAF-1000 PAF-2500 PAF-5000
Skid Mounted Plant
Chemical Dosing Pump
Bunded Chemical Storage Tank
pH Analyser
Control System with Local Indicator (standard)
Containerised System c/w A/C & Lights o o o o o o o
Container Non-slip Floor Coating - - - - - o o
Container Insulation (walls & ceiling) o o o o o o o
Container Side Access Door - - - - - o o
Duty Standby Dosing Pumps o o o o o o o
Static Mixer o o o o o o o
Dual Chemical Dosing (acid & alkali) o o o o o o o
Safety Shower & Eyewash Station o o o o o o o
PLC Control System with HMI o o o o o o o
Alarm Signal Output for Client Interface o o o o o o o
Premium Instrumentation Package o o o o o o o


Instrumentation Standard Package Premium Package
Flow Switch
Float Switch (chemical storage tank)
Level Transmitter (4-20 mA, chemical storage tank) -
pH Analyser (4-20mA)
Flow Transmitter o o
Temperature Sensor & Alarm o o
Data Logger (pH level) -
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 speci - fications. MAK Water takes no responsibility for any errors resulting from the use of information contained within this document.