Desalination Reverse Osmosis Membrane
Filtration accuracy: 0.0001 micron
Service life: 1-2 years
Salt rejection rate: 99.5%
PH range: 2-11
Maximum water inlet temperature: 45°C
Reverse osmosis is currently the most advanced filtration technology. It effectively blocks all dissolved inorganic molecules and organic substances with a relative molecular weight greater than 100, allowing only water molecules to pass through the membrane as pure water. With a high removal rate of divalent ions reaching up to 99.5% and a removal rate of monovalent ions of over 95%, reverse osmosis membranes find wide application in the preparation of space water, purified water, and ultrapure water. They are also utilized in the production of alcoholic beverages and beverages, as well as in the initial preparation of water for industries such as pharmaceuticals and electronics. Furthermore, they are used in the concentration, separation, purification, and production of pure water in chemical processes, desalination, and softening of boiler feed water, as well as in the desalination of seawater and brackish water. Industries such as papermaking, electroplating, dyeing, and others also benefit from these membranes for water use, water recycling, and industrial wastewater reuse.
Desalination Reverse Osmosis Membrane specification
| Model | Active Membrane Area ft2(m2) | Permeate Flow GPD(T/D) | Stable Rejection Rate (%) |
| SW-2521 | 14(1.3) | 300(1.13) | 99.7 |
| SW-4040HR | 85(7.9) | 1,500(5.7) | 99.75 |
| SW-4040MR | 85(7.9) | 1,800(6.8) | 99.7 |
| SW-8040HR | 400(37.2) | 6,500(24.6) | 99.8 |
| SW-8040MR | 400(37.2) | 7,500(28.3) | 99.75 |
Note:
- The water output listed in the table is the average value, and the error of water output of a single membrane element is within ±15%.
- Before starting the RO system, the system pretreatment debugging, membrane element filling, instrument calibration, and other system tests should be completed.
- The water inlet of the membrane element should be gradually increased in pressure, and the time to increase the pressure to the normal operating state should be no less than 60 seconds.
- The newly installed membrane should be flushed at low pressure for more than two hours, and the RO pure water should be discharged.
- Be careful to avoid back pressure on the product's waterside.
Standard Test Condition
| Concentration of Solution (NaCl) | Temperature (℃) | pH Value | Operating Pressure psi(MPa) | Recovery Rate(%) |
| 32000ppm | 25 | 7.5-8 | SW/800(5.5) | 8 |
Operating Limits and Conditions of Desalination Reverse Osmosis Membrane:
| Max.Working Pressure | 1200psi(8.3Mpa) |
| Max. Feed Water Temperature | 45 ℃ |
| Max. Feed Water Flow | 17m3/h(8040), 3.6m3/h(4040), 1.4m3/h(2521) |
| Max. Feed Water SDI15 | 5.0 |
| Free Chlorine Concentration of Feed Water | 0.1mg/L |
| pH Range of Feed Water During Continuous Operation | 2-11 |
| pH Range of Feed Water During Chemical Cleaning | 1-13 |
| Max. Pressure Drop of Single Membrane Element | 15psi(0.1Mpa) |
Reverse Osmosis Membrane application
Ultrapure water: water for semiconductor and liquid crystal industries
Pure water: water for boilers and various industrial processes
Drinking water: desalination of seawater, desalination of brackish water, pure water for food and beverage industries
Water refining: softening, removal of organic matter such as pesticides
Wastewater reuse: circulating cooling water, industrial and municipal wastewater reuse
Concentration and separation: separation, recovery, refining, and concentration of various useful substances.
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