Membrane desalination that strips dissolved salts from brackish, high-brackish and seawater — producing high-purity water for process, drinking and reuse.
Reverse osmosis pushes water through a semipermeable membrane to leave dissolved salts, hardness and contaminants behind. CWG has designed and built RO plants from small units to 150,000 IGPD seawater systems — for process and boiler feed, drinking water, and wastewater recycling across Pakistan since 1998.
RO applies pressure to force water through a membrane whose pores are fine enough to reject dissolved salts and most contaminants. Purified water (permeate) passes through; a concentrated stream (reject) carries the salts away.
A properly engineered pre-treatment train — filtration, softening or antiscalant dosing — protects the membranes and keeps the plant running reliably at high recovery.
CWG builds brackish, high-brackish and seawater RO in single or multi-pass configurations, matched to your feedwater and purity target.
Feedwater is pre-treated, pressurised and passed through membranes to yield high-purity permeate and a concentrated reject.
Filtration, softening or antiscalant dosing removes fouling risks and protects the membranes.
A high-pressure pump drives feedwater against the membranes.
Water passes through the membrane as pure permeate; salts stay behind in the reject.
Permeate is delivered to use or storage while the concentrate is discharged or further recovered.
Removes dissolved salts, hardness and most contaminants in one step.
Consistently meets process, boiler-feed and drinking-water standards.
Skids can be paralleled from small flows to seawater scale.
Optional energy-recovery devices cut power on large plants.
Brackish, high-brackish or seawater — configured to suit.
CWG RO plants running nationwide since 1998.
No regeneration chemicals or effluent; RO handles high TDS that would exhaust resins quickly.
Removes dissolved salts filters can’t touch — filtration is a pre-treatment, not a substitute.
Lower energy for most brackish and seawater duties, in a compact modular plant.
With groundwater growing more brackish and industries demanding high-purity water, RO is central to reliable supply — for boiler and process feed, safe drinking water, and recycling wastewater back into production.
Since 1998, CWG Watch Water Technology has delivered advanced water & wastewater solutions across Pakistan — wastewater plants, RO, demineralization, softening, filtration, specialty chemicals and complete plant engineering. With decades of experience, international technology partnerships and a proven portfolio, we design customised water and wastewater treatment solutions built specifically for Pakistan’s industrial requirements.
Send us a feedwater analysis and your purity target, and CWG will design an RO plant — brackish, high-brackish or seawater — to suit.
