EN
Industrial RO Membrane Element SW-400-XHR
Seawater desalination reverse osmosis membranes serve as the core components of seawater reverse osmosis desalination. By applying high pressure to overcome the osmotic pressure of seawater, these ultra-fine pore-sized aromatic polyamide semipermeable membranes only allow water molecules to pass through, while efficiently intercepting salts, microorganisms and impurities in seawater, thus converting seawater into fresh water. Characterized by a high salt rejection rate, low energy consumption and extensive application, they are currently the mainstream core elements for seawater desalination across the globe.
- Overview
- Parameter
- Recommended Products
- Ultra‑high desalination, superior water quality: Stable desalination rate of 99.65%–99.85%, with single‑element rate ≥99.6%. Effectively removes salts, heavy metals, colloids, and microorganisms, producing permeate that meets both drinking and industrial requirements.
- High‑pressure design: Maximum operating pressure up to 1,200 psi (approx. 8.3 MPa), utilizing high‑strength composite membranes and reinforced pressure‑bearing structures to ensure long‑term reliable operation under high‑salinity and high‑pressure conditions.
- Enhanced anti‑fouling: Incorporates hydrophilic, smooth, and electrically neutral surface technologies, improving fouling resistance by 20%, reducing pressure differential and fouling, and ensuring high chemical cleaning recovery.
- Wide pH tolerance: Continuous operation pH range of 2–12, and chemical cleaning pH range of 1–13, allowing flexible deep cleaning with strong acids and alkalis to adapt to various fouling conditions.
- Energy saving and cost reduction: High system recovery rate; when combined with energy recovery devices, can recover 40%–60% of energy, significantly lowering overall operating costs.
Core Advantages (Abbreviated)
Parameter
|
MODEL |
SW-400-XHR |
|
|
Product specifications |
Nominal salt rejection, % |
99.85 |
|
Minimum salt rejection, % |
99.65 |
|
|
Permeate flow rate, m3/d(gpd) |
38(7,500) |
|
|
Active membrane area, m2(ft2) |
37.2(400) |
|
|
Feed spacer, mil |
28 |
|
|
Test conditions |
Feed water NaCl, ppm |
32,000 |
|
Pressure, psi(bar) |
800(55) |
|
|
Temperature, ℉(℃) |
77(25) |
|
|
Recovery rate of single membrane element, % |
15 |
|
|
pH |
7-8 |
|
|
Max. operation limits |
Pressure, psi(bar) |
1,200(82.7) |
|
Feed water flow, m3/h |
16 |
|
|
Feed free chlorine tolerance, mg/l |
<0.1 |
|
|
pH range during continuously operation |
2-11 |
|
|
Max. pressure drop for single element, psi(bar) |
15(1.0) |
|
|
Temperature, ℉(℃) |
113(45) |
|
|
Feed Silt Density Index (15 min) SDI15 |
5 |
|
|
pH range during chemical cleaning |
1-13 |
