Desalination Membranes


Persistent groundwater quality issues as a result of human activities have increased concerns of freshwater production. Excessive use of natural sources of freshwater, such as rivers, lakes, wells, and springs, as well as pollution has exacerbated groundwater quality problems in many parts of the world. In recent times, reverse osmosis membranes have been adapted on a grand-scale for desalination operations. The most commonly utilized membrane elements are manufactured from popular brands in the water treatment industry. Dupont/DOW Filmtec, Hydranautics, Toray, and Lanxess have remained as the leading distributors of high quality desalination membranes throughout the last several decades. Membrane filtration involves the removal of contaminants with highly efficient separation performance and excellent water treatment capabilities.

Membrane filtration works by incorporating layers of semi-permeable membranes in the reverse osmosis system which acts as a barrier to incoming polluted water, permitting only particular matter through the tiny pores of the membrane. This process results in the separation of these impurities from the water flowing through the membrane layers, and being left behind in the concentrated side of the RO system, and the purified water residing on the other.

Pure Aqua Desalination Membrane Elements

The seawater desalination membranes supplied from Pure Aqua can be attained in sizes ranging from 2.5” to 8” element, and provide unmatched productivity, salt rejection, and production of purified water. These desalination membranes are designed to accommodate a wide range of seawater applications with various temperatures that require high pressure and reliable performance. Other important benefits offered by our seawater reverse osmosis membranes include:

  • Maximized permeate flow rate
  • 7% (or more) salt rejection
  • 92% (or more) boron rejection
  • Low volume of membrane fouling
  • Great suitability for pH cleaning
  • Minimal energy usage

Water treatment applications that face issues of extremely high concentrations of total dissolved solids (TDS) and salt levels develop a need for these desalination membranes. When used alongside with standardized pre-treatment systems, any occurrence of membrane fouling is nullified, including extensive high performance between cleanings.

Desalination Membrane Features

  • Low potential of particle trappings due to spacer design
  • Optimal for challenging feedwater conditions
  • Averts impact damages during operations
  • Improves efficiency of RO systems at low pressures
  • Suitable for small to large sized desalination plants
  • Maximized resistance to chemicals
  • Converts seawater into fresh, purified water
  • No requirement of post-treatment


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