Reverse Osmosis (RO) systems are used in variety of water and wastewater treatment applications where removal of total dissolved solids from the water is targeted. RO membranes are able to efficiently remove more than 99% of dissolved solids, nitrate, sodium, fluoride, chlorine, arsenic, and many other contaminants from water. The following criteria should be considered when selecting RO membranes:

Ultrafiltration (UF) is a type of pressure driven membrane filtration process designed to separate suspended solids, viruses, bacteria, and algae from water through a semi-permeable membrane while passing water and lower molecular weight constituents such as monovalent and divalent ions. The membrane pore size in UF is in the range of 0.1μ to 0.01μ. UF is used in different applications including drinking water treatment, process and wastewater treatment, pulp and paper industry and many more.

Ultrafiltration provides variety of benefits including:
– Low operational pressure
– Retain essential minerals in the treated water
– No wastewater generation

WaterSafe provides different types of UF membranes from the following suppliers:
– Hydranautics
– Koch



Toray manufactures polyamide composite membranes certified under ISO-9001 which are used for different applications.

Sea water RO membranes:

Brackish water RO membranes:


Hydranautics, which was acquired by Nitto Denko Corporation, is a global leader in manufacturing RO membranes to be used for different applications.

membranes are suitable for desalination of seawater and high TDS industrial wastewaters.

spiral-wound membranes are suitable for brackish water and could be used in pharmaceutical, power generation, and electronics industry.


CSM  manufactures variety of RO membranes for different applications depending on their characteristics:
– Brackish Water RO membranes are suitable for high salinity water of around 10,000 ppm. They could be used in drinking water and wastewater treatment.
– Seawater RO membranes are used for water with high salt content in the range of 3% to 5% to generate high grade water.
– Fouling Resistant RO membranes are used for waters with high fouling potential such as particles and organic compounds.