Reverse osmosis (RO) is a filtration method that removes many types of large molecules and ions from solutions by applying pressure to the solution when it is on one side of a selective membrane. The result is that the solute is retained on the pressurized side of the membrane and the pure solvent is allowed to pass to the other side. To be “selective,” this membrane should not allow large molecules or ions through the pores (holes), but should allow smaller components of the solution (such as the solvent) to pass freely.
Reverse osmosis is most commonly known for its use in drinking water purification from seawater, removing the salt and other substances from the water molecules. This is the reverse of the normal osmosis process, in which the solvent naturally moves from an area of low solute concentration, through a membrane, to an area of high solute concentration. The movement of a pure solvent to equalize solute concentrations on each side of a membrane generates a pressure and this is the “osmotic pressure.” Applying an external pressure to reverse the natural flow of pure solvent, thus, is reverse osmosis.
The process is similar to membrane filtration. However, there are key differences between reverse osmosis and filtration. The predominant removal mechanism in membrane filtration is straining, or size exclusion, so the process can theoretically achieve perfect exclusion of particles regardless of operational parameters such as influent pressure and concentration. Reverse osmosis, however, involves a diffusive mechanism so that separation efficiency is dependent on solute concentration, pressure, and water flux rate.

1000 to 10,000 GPD Brackish Water Reverse Osmosis

Standard Features

Reverse osmosis, also known as hyper filtration, is used to purify water and remove salts and other impurities. It is also capable of rejecting bacteria, sugars, proteins, particles, dyes, and other constituents that have a molecular weight of greater than 150-250 dalton.

* Powder coated frame (White Color/Blue/Black)
* Heavy duty 5 micron sediment prefilter
* Corrosion resistant & efficient high pressure pump
* High efficiency motor
* FRP pressure vessel
* Product and Reject Flow Meters
* Low pressure switch
* Manual flush
* Electric feed solenoid valve
* High rejection TFC spiral membranes
* Tagging and identification of instrumentation
* Heavy duty high pressure tubing
* Unique non corrosive high pressure regulating valve
* Water tight power wiring / shrouding
* Liquid filled pressure gauges (Pre and Post Filter, Pump Pressure)
* Design TDS. 2000ppm
* 220V/440

Model GPD Membranes Pump HP
Size Qty 60Hz 50Hz.
BWRO-1000 1000 4″x40″ 1 2 2
BWRO-2000 2,000 4″x40″ 2 2 2
BWRO-4000 4,000 4″x40″ 3 3 3
BWRO-5000 5,500 4″x40″ 4 3 3
BWRO-7000 7000 4″x40″ 5 4 4
BWRO-9000 9,000 4″x40″ 6 5 5
BWRO-10000 10,000 4″x40″ 8 5 5

Pakwater Care Services Reverse Osmosis Plants

Commercial Reverse Osmosis Systems RO-300 Series

10,000 60,000 GPD Brackish Water RO

Standard Features

Reverse osmosis, also known as hyper filtration, is used to purify water and remove salts and other impurities. It is also capable of rejecting bacteria, sugars, proteins, particles, dyes, and other constituents that have a molecular weight of greater than 150-250 dalton.

  • 8” TFC spiral wound membranes
  • PVC membrane housing
  • Epoxy painted steel frame
  • Stainless steel multi-stage pump with TEFC motor
  • 5 micron cartridge prefilter
  • Power supply: 440V/3Ph
  • Design TDS 2000ppm
  • Motor starter
  • Low pressure switch
  • High pressure switch
  • Liquid filled pressure gauges, panel mount for pump suction, membrane feed, and final concentrate
  • Permeate & concentrate flow meters
Model Output Pump HP Membranes
GPD M3/Day 60Hz 50Hz Size No.
BW-10K 10,000 37.85 5 5 8”X40” 2
BW-15K 15,000 56.75 7.5 7.5 8”X40” 3
BW-20K 20,000 75.7 10 10 8”X40” 4
BW-30K 30,000 113.5 15 15 8”X40” 6
BW-40 40,000 151.4 15 15 8”X40” 8
BW-50 50,000 189.25 20 20 8”X40” 9
BW-60 60,000 227.1 20 20 8”X40” 10

Industrial Brackish RO Systems RO 400 Series

70,000 to 130,000 GPD Brackish Water RO

Standard Features

Reverse osmosis, also known as hyper filtration, is used to purify water and remove salts and other impurities. It is also capable of rejecting bacteria, sugars, proteins, particles, dyes, and other constituents that have a molecular weight of greater than 150-250 dalton.

  • 8” TFC spiral wound membranes
  • FRP membrane housing
  • Epoxy painted steel frame
  • Stainless steel multi-stage pump with TEFC motor
  • 5 micron cartridge prefilter
  • Power supply: 460V/3Ph/60Hz
  • PLC based control panel
  • Programmable time delay and set points
  • Status lamps
  • 115V/60Hz control voltage
  • Motor starter
  • Design TDS 2000ppm
  • Low pressure switch
  • High pressure switch
  • Liquid filled pressure gauges, panel mount for pump suction, membrane feed, and final concentrate
  • Permeate conductivity monitor
  • Permeate & concentrate flow meters
Model No. Permeate Membranes
GPD PSI HP (50Hz) HP (60Hz) Qty.
BW-70K 70,000 250 20 15 12
BW-80K 80,000 235 25 25 15
BW-100K 100,000 235 25 25 18
BW-110 110,000 235 25 25 20
BW130K 130,000 230 30 30 24