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Seawater Desalination Membrane

The membrane elements are characterised by low operating pressure, low investment in equipment and good and stable desalination performance. With a maximum desalination rate of 99.85%, it is possible to obtain drinking water from seawater through primary reverse osmosis.

Brief Introduction

SW series membrane elements are generally suitable for the treatment of seawater and highly concentrated brackish water, and can be used for desalination of seawater, desalination of highly concentrated brackish water, power plant boiler make-up water and other industrial water treatment, as well as for the reuse of waste water, concentration and recovery of high value-added substances such as food and pharmaceuticals.

Specifications and Major Properties

Model Average Permeated Flow GPD (m3/d)  Stable Rejection Rate (%) Minimum Rejection Rate (%)


7500(28.4)  99.85 99.6



99.8 99.6


99.7 99.5

Testing Conditions: 

Testing Pressure: 800 psi (5.5Mpa)

Temperature of Testing Solution: 25°C

Concentration of Testing Solution (NaCI): 32000ppm

pH Value of Testing Solution: 7.5

Recovery Rate of Single Membrane Element: 15%

Extreme Operation Conditions

Max. Working Pressure: 1000psi(6.9Mpa)

Max. Feedwater Flow: 75gpm(17m3/h) (8040)

16gpm (3.6 m3/h) (4040)

Max. Feedwater Temperature: 45°C

Max. Feedwater SDI: 5

Residual chlorine Concentration of Feedwate: < 0.1ppm

pH Range of Feedwater during Continuous Operation: 3~10

pH Range of Feedwater during Chemical Cleaning: 2~12

Max. Pressure Drop of Single Membrane Element: 15psi(0. 1Mpa)

Dimensions of Membrane Element

All dlimensions are shown in: millimeter (inch)

Dimensions of Membrane Element (1)

Dimensions of Membrane Element (2)