Magnesium-lithium separation nanofiltration membrane OV-SLNF
● Magnesium-lithium separation
● Reclaimed water reuse
● Special separation
● Product performance and characteristics
Magnesium-lithium separation nanofiltration membrane (SLNF) is an aromatic polyamide composite membrane element for selective desalination. It has a high removal rate for divalent and above anions and cations, organic matter, viruses, etc., and can partially intercept monovalent ions such as sodium and chloride. Nanofiltration membrane has the advantages of low pressure and energy efficiency, as it involves no chemical reactions, requires no heating, and preserves biological activity during the separation process. Further optimizing the structural design of membrane elements has improved their structural strength, enabling them withstand higher pressure difference. This series of products has been widely used in industries such as magnesium-lithium separation, reclaimed water reuse and special separation.
● Specification parameters
Model of membrane element | Stable desalination rate(％) | Average water productionGPD(m³/d) | Effective membrane areaft²(㎡) |
OV-SLNF1-4040 90 | ≥90.0 | 2000(7.5) | 90(8.4) |
OV-SLNF1-8040 400 | ≥90.0 | 10000(37.9) | 400(37.2) |
OV-SLNF2-4040 90 | ≥96.0 | 1800(6.8) | 90(8.4) |
OV-SLNF2-8040 400 | ≥96.0 | 9000(34.1) | 400(37.2) |
OV-SLNF3-4040 90 | ≥98.0 | 1600(6.1) | 90(8.4) |
OV-SLNF3-8040 400 | ≥98.0 | 8000(30.3) | 400(37.2) |
● Testing conditions
Test pressure | 100psi(0.69MPa) |
Test solution temperature | 25℃ |
Test solution concentration(NaCl) | 2000ppm |
Test solution pH value | 7.5 |
Recovery rate of single membrane element | 15% |
● Operating and cleanimg limits
Maximum operating pressure | 600 psi(4.14MPa) |
Maximum inlet flow rate | 75 gpm (17m³/h)(8040) |
16 gpm (3.6m³/h)(4040) | |
Maximum inlet temperature | 45℃ |
Maximum inletSDI15 | 5 |
Inlet free chlorine concentration | ＜0.1 ppm |
Inlet pH range for continuous operation | 3-10 |
Inlet pH range for chemical cleaning | 2-12 |
Maximum pressure drop of single membrane element | 15psi(0.1 MPa) |