Product introduction and application range
1. XLP series ultra-low pressure desalination reverse osmosis membrane element is a polyamide composite membrane developed by Shanghai Feizuo company for surface water and groundwater. It has the characteristics of low pressure operation, high water production and good desalination performance. It can maintain high water flux under extremely low operating pressure. Its operating pressure is only 0.69MPa. It can be used for the treatment of tap water, surface water and groundwater with a salt content below 500ppm. It is especially suitable for the second-stage desalination of two-stage reverse osmosis. , 4-inch desalination membrane is mainly used in small-scale pharmaceutical, food, electronic plants with process pure water, ultra-pure water, etc., can also be used for schools, communities and other water supply stations desalination purification treatment. Among them, the 8-inch desalination membrane is mainly used in large and medium-sized chemical industry, medicine, food, power plant, electronic factory, process pure water, boiler make-up water, etc. It can also be used for desalination and purification of municipal water.
| Model | Active Are a ft2(m2) | Feed Spacer Thickness(mil) | Permeate Flow Rate GPD(m3/d) | Stabilized Salt Rejection (%) | Minimum Salt Rejection (%) |
| FZ-XLP-8040-400 | 400 (37.2) | 32 | 9500 (35.9) | 99.00 | 98.50 |
| FZ-XLP-8040-440 | 440 (40.9) | 28 | 10500 (39.7) | 99.00 | 98.50 |
| FZ-XLP-4040 | 93.5 (8.7) | 28 | 2600 (9.8) | 99.00 | 98.50 |
| FZ-XLP-4021 | 36 (3.3) | 28 | 1300 (4.9) | 99.00 | 98.50 |
| FZ-XLP-2540 | 28 (2.6) | 28 | 750 (2.84) | 99.00 | 98.50 |
| FZ-XLP-2521 | 14 (1.3) | 28 | 300 (1.13) | 99.00 | 98.50 |
2. Element Dimension :
| Model | Length | Diameter | Permeate Tube inner Diameter | Permeate Tube
Extension Length |
| inch | mm | inch | mm | inch | mm | inch | mm |
| 8040 | 40 | 1016 | 7.9 | 201 | 1.12 | 28.5 | / | / |
| 4040 | 40 | 1016 | 3.9 | 99 | 0.75 | 19.1 | 1.04 | 26.5 |
3. Test condition :
| Test Pressure | 100psi ( 0.69Mpa ) |
| Test Temperature | 25℃ |
| Test Liquid concentration ( NaCI ) | 500ppm |
| Testing Liquid PH data | 7.5 |
| Recovery rate of single RO membrane element ( 4021 ) | 8% |
| Recovery rate of single RO membrane element | 15% |
4. Operative limits
| Highest temperature of Inlet water | 113 F ( 45℃ ) |
| Highest Operating Pressure | 600psi ( 5.14Mpa ) |
Maximum Pressure Drop
of Single RO Membrane element | 15psi (0.1M Pa) |
| Inlet water PH data range of continuous operating | 3 - 10. |
| Inlet water PH data range of chemical cleaning | 2 - 12. |
| Highest Inlet water flow （4 inch） | 16gpm ( 3.6m/h ) |
| Highest Inlet water flow （8 inch） | 75gpm ( 17m3/h ) |
| Biggest Inlet water SDI 15 | 5 |
| Inlet water free chlorine concentration | < 0.1ppm |
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