Material separation nanofiltration membrane OV-NF-S
● Material separation
● Reclaimed water reuse
● Zero discharge salt separation
● Garbage leachate
● Product performance and characteristics
Material separation nanofiltration membrane (NF) is an aromatic polyamide composite membrane element for selective desalination. It has a high removal rate for divalent and above ions, organic matter, viruses, etc., but can partially retain monovalent ions such as sodium and potassium. 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. In the design of the membrane element, a 34 mil/46 mil wide channel separator which is easy to clean is adopted. Furthermore, the structural strength of the membrane element is improved so that the element can withstand higher pressure differentials. This series of products has been widely used in industries such as material separation, reclaimed water reuse, zero discharge salt and landfill leachate.
● Specification parameters
Model of membrane element | Stable desalination rate(％) | Average water productionGPD(m³/d) | Effective membrane areaft²(㎡) |
OV-NF30-4040S34 | ≥98.0 | 2000(7.5) | 90(8.4) |
OV-NF30-8040S34 | ≥98.0 | 10000(37.9) | 400(37.2) |
OV-NF30-4040S46 | ≥98.0 | 1600(6.1) | 70(6.5) |
OV-NF30-8040S46 | ≥98.0 | 8000(30.3) | 285(26.5) |
OV-NF60-4040S34 | ≥99.0 | 1800(6.8) | 90(8.4) |
OV-NF60-8040S34 | ≥99.0 | 9000(34.1) | 400(37.2) |
OV-NF60-4040S46 | ≥99.0 | 1400(5.3) | 70(6.5) |
OV-NF60-8040S46 | ≥99.0 | 7000(26.5) | 285(26.5) |
● Testing conditions
Test pressure | 100psi(0.69MPa) |
Test solution temperature | 25℃ |
Test solution concentration(MgSO₄) | 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 inleSDI15 | 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) |