SW(Sea water) series Reverse Osmosis membrane element is developed for desalination of sea water, sub-seawater and high salinity water. It is mainly used in the desalination of sea water, desalination of high concentration brackish water, reuse of high salinity waste water, reuse of concentrate water from RO system as well as the concentration and extraction of high value-added foods, drugs,etc.
Description
Filmedia® – High Quality Reverse Osmosis Membrane Manufacturer
Filmedia® is a leading reverse osmosis membrane manufacturer, dedicated to providing high-quality reverse osmosis membrane solutions to customers around the world. We provide a variety of reverse osmosis membranes for home and industrial applications to meet different water treatment needs. Our reverse osmosis membranes are made of high-quality materials and have excellent filtration performance, providing you with clean and safe water resources.
Product Features
☑ High Salt Rejection
Salt rejection rates typically exceed 99.5%, effectively removing sodium, magnesium, calcium, chlorides, and other dissolved salts.
☑ High Permeate Flow
Optimized membrane surface design enhances water flux and reduces energy consumption per unit of permeate produced.
☑ Excellent Fouling Resistance
Minimizes the adhesion of organic matter and biological foulants, extending cleaning intervals.
☑ Stable and Durable
Suitable for high-salinity seawater environments; typical service life ranges from 3 to 7 years (depending on operating conditions).
Specifications
|
Model
|
SW2521
|
SW2540
|
SW4021
|
SW4040
|
SW8040
|
|
Effective membrane area ft²(㎡)
|
12(1.1)
|
28(2.6)
|
33(3.1)
|
85(7.9)
|
380(35.2)
|
|
Working pressure psi(Mpa)
|
800(5.5)
|
800(5.5)
|
800(5.5)
|
800(5.5)
|
800(5.5)
|
|
Average flow GPD(m³/d)
|
200(0.76)
|
500(1.89)
|
750(2.8)
|
1400(5.3)
|
6000(22.7)
|
|
Salt rejection(%)
|
99.2
|
99.2
|
99.2
|
99.5
|
99.8
|
|
Boron rejection(%)
|
92
|
92
|
92
|
92
|
92
|
|
Recovery rate(%)
|
4
|
8
|
8
|
8
|
8
|
|
Max.working pressure psi(Mpa)
|
1000(6.9)
|
1000(6.9)
|
1000(6.9)
|
1000(6.9)
|
1000(6.9)
|
|
Max.water temperature(℃)
|
45
|
45
|
45
|
45
|
45
|
|
Max.inflow SDI15
|
<5
|
<5
|
<5
|
<5
|
<5
|
|
Max.inflow GPM(m³/h)
|
6(1.4)
|
6(1.4)
|
16(3.6)
|
16(3.6)
|
70(382)
|
|
Free chlorine concentration(mg/l)
|
<0.1
|
<0.1
|
<0.1
|
<0.1
|
<0.1
|
|
Continuous runing water PH range
|
3~10
|
3~10
|
2~11
|
2~11
|
2~11
|
|
Chemical cleaning water PH range
|
2~12
|
2~12
|
1~12
|
1~12
|
1~12
|
|
Max,pressure drop of single membrane element psi(Mpa)
|
10(0.07)
|
15(0.1)
|
15(0.1)
|
50(0.34)
|
50(0.34)
|
|
Test liquid concentration(NaCl mg/l)
|
32000
|
32000
|
32000
|
32000
|
32000
|
Note:
- The stated performance is initial data taken after 30 minutes of operation based on the following conditions: 32,500 ppm NaCl, 800 psi (55.0 bar) 25℃, pH 7.5, 8%(8040,4040), 4%(4021)recovery.
- Permeate flow rate for individual elements may vary with tolerance within 15%.
Working Principle of RO Membranes
Reverse osmosis technology operates based on the principle of osmotic pressure. When the applied pressure exceeds the natural osmotic pressure of seawater, water molecules pass through the semi-permeable membrane, while salt ions, microorganisms, and most dissolved contaminants are rejected, thereby achieving efficient desalination and purification.
Membrane Structure
Seawater reverse osmosis membranes typically employ a spiral-wound structure, consisting of the following components:
- Center tube
- Feed spacer
- Semipermeable membrane
- Permeate carrier
- Semipermeable membrane
- Feed spacer
- Glassfiber wrap
Application Industries
- Seawater Desalination Plants
Converting seawater into drinking water and municipal water supplies.
- Industrial Water Preparation
Widely used in industries such as power generation, petrochemicals, iron and steel, electronics, and pharmaceuticals.
- Water Supply for Islands and Coastal Areas
Addressing freshwater scarcity.
- Offshore Platforms
Providing freshwater for offshore oil and gas platforms and marine vessels.
- Advanced Treatment of Reclaimed Water
Serving as a key step in producing high-quality industrial reuse water.
Filmedia® – Expert in reverse osmosis desalination solutions
Filmedia® is an expert in reverse osmosis desalination solutions, offering cutting-edge technologies and high-quality membranes designed to provide reliable and sustainable water purification. With years of experience in the field, Filmedia® specializes in providing comprehensive solutions for seawater desalination, wastewater treatment, and industrial water filtration. Our reverse osmosis systems are engineered to meet the specific needs of various industries, ensuring optimal performance, cost-efficiency, and minimal environmental impact. We work closely with clients to deliver tailored solutions that enhance water treatment processes, improve water quality, and contribute to water conservation efforts worldwide.
