
Enwa Reverse osmosis systems
Reverse osmosis systems for producing drinking and process water from seawater on ships and offshore platforms.
Add the product to your quote request and we will tell you the price and delivery time.
- Reverse osmosis typically rejects 96–99% of many contaminants
- The systems withstand vibration and motion
- Standard modules or customised plants for newbuilds and retrofits

Water treatment at sea
Enwa supplies ships and offshore platforms with equipment for producing drinking and process water, protecting HVAC systems, and treating and recycling wastewater. The systems are standard modules or customised plants for newbuilds and retrofits.
Deliveries can include seawater assessment, integration with the vessel's systems, automation and remote monitoring, support with regulatory compliance, crew training, and spare parts and service.
Specifications
Reverse osmosis
- Use
- Drinking water and process water from seawater
- Rejection
- Typically 96–99% of many contaminants
- Installations
- Ships and offshore platforms, newbuilds and retrofits
- Services
- Seawater assessment, integration, remote monitoring, training, service
Documents
We supply the instructions for use and the technical brochure on request.
Request documents by emailHow reverse osmosis works
Before the feed water reaches the membranes, substances that would damage the membranes or the high-pressure pump are removed. After the membranes, the flow splits into purified permeate and concentrate. Combined with ion exchange or EDI, reverse osmosis can produce demineralised and ultrapure water.
- PretreatmentRemoves chlorine, iron, silica, particles and organic matter
- Feed pumpRaises the pressure; a fine filter removes small particles
- High-pressure pumpRaises the pressure above the osmotic pressure
- RO membraneWater molecules pass through, salts and impurities are retained
- Permeate and concentratePurified water for use, concentrate to the drain
We install, train and service.
The same specialist handles commissioning and is still there for service years later.