EN
Industrial RO Membrane Element SW-440-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-440-XHR |
|
|
Product specifications |
Nominal salt rejection, % |
99.85 |
|
Minimum salt rejection, % |
99.65 |
|
|
Permeate flow rate, m3/d(gpd) |
30(8,000) |
|
|
Active membrane area, m2(ft2) |
41(440) |
|
|
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 |
