SW Series is an aromatic polyamide composite membrane element for seawater desalination. By optimizing the structure of the membrane element, this series of membrane elements can increase water production. Under the same water production requirement, the number of membrane elements can be reduced. It has the characteristics of low operating pressure, low equipment investment, good desalination performance, and stability. In particular, its high desalination rate ensures that drinking water can be obtained from seawater through first-order reverse osmosis.
SW series membrane elements are suitable for the treatment of seawater and brackish water with high concentration. They can be used for the treatment of seawater desalination, desalination of brackish water with high concentration, boiler feed water in power plants, wastewater reuse, concentration and recovery of high-value-added substances such as food and medicine, etc.
It is mainly used in various ffelds of industry, such as pure water, boiler recharge water, food processing and pharmaceutical manufacturing.
Model |
Membrane ft2 (m2) |
Average Permeate GPD(m3/d) |
Stable Rejection % |
Min. Rejection% % |
RM-SW1-4040 |
80 (7.4) |
1900 (7.2) |
99. 7 |
99 |
RM-SW2-8040 |
380 (35.2) |
8200 (31) |
99.7 |
99 |
Testing Pressure |
800 psi (5.5MPa) |
Temperature of Testing Solution |
25 ℃ |
Concentration of Testing Solution (NaCl) |
30000ppm |
pH Value of Testing Solution |
7.5 |
Recovery Rate of Single Element |
8% |
Max. Working Pressure | 1000psi(6.9MPa) | Max. Feed Water SDI15 | 5 |
Max. Feed Water Flow |
75gpm (17 m3/h) For 8040 16gpm (3.6 m3/h) For 4040、 4021 |
Max. Feed Water COD | 10ppm |
Max. Feed Water BOD | 5ppm | ||
Max. Feed Water Temperature | 45°C | Max. Feed Water TOC | 10ppm |
Max. Feed Water TDS | 5000ppm | Residual Chlorine Concentration of Feed Water | < 0. 1ppm |
ax. Feed Water Hardness | 60ppm | pH Range of Feed Water During Continuous Operation | 2〜12 |
Max.Turbidity NTU | 1.0 | Max. Pressure Drop of Single Element | 15psi (0.1MPa) |