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Brackish Water Reverse Osmosis – Basic

MAK Water’s Brackish Water Reverse Osmosis – Basic (BWROB) plants are pre-engineered products, designed to suit simple applications where a high level of electrical instrumentation and controls is not required, and the feed water quality falls within the parameters defined in this data sheet.

The standard treatment process involves pre-filtration (5 and 1 micron cartridge filters) and RO desalination. The BWROB is designed to operate continuously until the permeate tank is filled, or feed water is unavailable.

The BWROB is available with a pre-determined number of standard options and is supplied with a generic documentation package.

If you have specific requirements, contact us to discuss our custom designed desalination plants or ask about our hire options.


Permeate flow ratem3/day101525303550
Permeate recovery rate%40~70 (varies according to feed water quality and RO configuration)
Ambient design temperature°C1~35 (1~43 with optional air conditioned container)
Feed water inlet pressure kPamin. 200~500 max. (flooded suction only with optional low pressure feed pump)
Permeate discharge pressurekPa~40
Brine discharge pressure kPa~40
Power supply -AC 240V, 1 Phase, 50Hz
Power consumption (approx.)kW222335
Control panel IP rating -IP50
Skid dimensions (approx.)mm1,500W x 1,700H x 680D
Skid weight (approx.)kg150160170180190200
Container size (optional)-10’ ISO
UV disinfection (optional)UV dose>40 mJ/cm2 @ 90% UVT
Distribution pump set (optional)m3/hr @ 300kPa1.041.562.63.133.655.21


ParameterUnitsFeed waterPermeate
Total dissolved solids (TDS)mg/L<5,000<500 (typical)
Temperature ˚C15~30-
pHpH units5~8.5-
Total suspended solids (TSS)mg/L<5<1
Particle sizeµm>1-
Silt density index-<5*1-
Free chlorinemg/L0 (<2 with optional GAC filter)0 (0.2~2.0 with optional chlorine disinfection)
Dissolved ironmg/L<0.1-
Dissolved manganese mg/L<0.1-
Biological oxygen demand (BOD) as O2mg/L<10-
Chemical oxygen demand (COD) as O2mg/L<10-
Total organic carbon (TOC)mg/L<3-

*1Increased membrane fouling will occur where feed water SDI exceeds 3


✓= Standard Supply o = Optional Supply

Skid mounted plant
uPVC pipe work with isolation, non-return and sampling valves
Inlet pressure regulating valve*1
Solenoid valves (inlet feed and CIP/flush) 
Low pressure feed pump oooooo
High pressure RO pump 
RO pressure vessels and membranes with reject control valve
Concentrate recirculation with throttling valve 
Hose connections for membrane clean in place (CIP)*2
Control panel with indicator lamps, isolators and e-stop
Pre-RO treatmentCartridge filters (5 and 1 µm) 
Auto-backwashing GAC filter*3oooooo
Anti-scalant dosing*4oooooo
Post-RO treatmentFlow paced chlorine dosing oooooo
UV reactor with ballast*5, 6oooooo
Containerised system with overhead lighting and air conditioningoooooo
Permeate distribution pump with controller*5 oooooo

*1Not supplied where low-pressure feed pump option is taken, *2CIP tank and pump by others, *3For free chlorine removal, *4May be required depending on feed water quality, consult MAK Water, *5Separate power connection required, *6UV system supplied loose for installation by others


Level switchesFeed water tank
Permeate tank
Anti-scalant dosing tank (optional)
Chlorine dosing tank (optional)
Pressure switchesLow pressure feed pump discharge (optional)
High pressure RO pump discharge 
Permeate distribution pump (optional)
Pressure gaugesFeed water inlet or low pressure pump discharge (optional)
GAC filter discharge (optional)
Cartridge filter discharge 
High pressure RO pump discharge 
Brine discharge 
Flow indicators (rotameters)Permeate
Conductivity meterPermeate