FROTEC 8040-NF / 4040-NF nanofiltration membrane
FROTEC 8040-NF / 4040-NF elements can separate organics and salts from water and increase permeability while offering superior salt rejection. They significantly reduce operating costs and provide optimal hardness rejection for softening applications and the removal of pesticides, bacteria or viruses.
FROTEC 8040-NF / 4040-NF elements are designed to provide high rejection of natural organic materials and moderate rejection of total hardness, while offering energy and cost savings.
Suitable for:
removing total organic carbon (TOC) and trihalomethane (THM) precursors.
high salt rejection with ultra-low-pressure operations, increased energy savings, and significantly lower installation and operating costs.
various operating conditions with 4″and 8″elements.
Product Specifications
| Model |
Active Membrane Area
ft2(m2) |
Stabilized Salt Rejection
% |
Permeate Flow Rate
gpd(m3/d) |
| 8040-NF |
400(37) |
40~60 (NaCl)
≥98% (MgSO4) |
8,250(31.2) (NaCl)
9,780(36.8)(MgSO4) |
| 4040-NF |
82(7.6) |
40~60 (NaCl)
≥98% (MgSO4) |
1,610(6.1) (NaCl)
1,910(7.2) (MgSO4) |
Test Condition:Feed Water Pressure0.48MPa (70 psi); Feed Water Temperature25°C(77 °F); Feed Water Concentration2,000 ppm NaCl/2,000 ppmMgSO4; Feed Water pH 7; Permeate Recovery 15%.
Dimensions
| Model |
A inch(mm) |
B inch(mm) |
C inch(mm) |
D inch(mm) |
| 8040-NF |
40(1,016) |
0 |
1.5(38) |
7.9(201) |
| 4040-NF |
40(1,016) |
1.05(26.7) |
1.05(26.7) |
3.9(99) |
Operation Condition
Maximum Operating Pressure 41 bar(600 psi) Maximum Operating Temperature45ºC(113ºF)
Maximum Pressure Drop per Element1.0 bar (15 psi)
pH Range, Continuous Operation3-10 pH Range, Chemical Cleaning1-12
Maximum Feed Silt Density Index (SDI15)5.0 Free Chlorine Tolerance< 0.1 ppm
Note
- Permeate flow rates for individual elements may vary ±15%.
- Membrane active areas may vary ±4%.
- Stabilized salt rejection is generally achieved after continuous using for 24-48 hours depending on feed water qualities and operating conditions.
FROTEC 8040-SW / 4040-SW desalination membrane
Through technical innovation. FROTEC 8040-SW / 4040-SW desalination membranes have achieved 20% increase in water production with the same operating pressure conditions , and have excellent system operation economy, suitable for large-scale desalination systems.
Ultra high boron rejection
Use the short diaphragm structure to increase the number of sheets and the efficiency of the membrane
Suitable for new system and existing system component replacement
Suitable for wider pH cleaning range, better cleaning effect
Product Specifications
| Model |
Active Membrane Area
ft2(m2) |
Stabilized Boron Rejection
% |
Stabilized Salt Rejection
% |
Minimum Salt Rejection
% |
Permeate Flow
Rate gpd(m3/d) |
| 8040-SW |
400(37) |
92 |
99.8 |
99.65 |
7,500(28) |
| 4040-SW |
78(7.2) |
92 |
99.8 |
99.65 |
1600(6.1) |
Test Condition:Feed Water Pressure 5.5MPa (800 psi); Feed Water Temperature25°C(77 °F); Feed Water Concentration 32,000 ppm NaCl; Feed Water pH 8; Permeate Recovery 8%.
Dimensions
| Model |
A inch(mm) |
B inch(mm) |
C inch(mm) |
D inch(mm) |
| 8040-SW |
40(1,016) |
0 |
1.125(29) |
7.9(201) |
| 4040-SW |
40(1,016) |
1.05(26.7) |
0.75(19) |
3.9(99) |
Operation Condition
Maximum Operating Pressure 83 bar(1200 psi) Maximum Operating Temperature45ºC(113ºF)
Maximum Pressure Drop per Element 1.0 bar (15 psi)
pH Range, Continuous Operation 2-11 pH Range, Chemical Cleaning 1-13
Maximum Feed Silt Density Index (SDI15) 5.0 Free Chlorine Tolerance< 0.1 ppm
Note
1. Permeate flow rates for individual elements may vary ±15%.
2. Membrane active areas may vary ±4%.
3. Stabilized salt rejection is generally achieved after continuous using for 24-48 hours depending on feed water qualities and operating conditions.
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