Home / Products / Nanofiltration Membrane Elements / 280 Series / 4 Inch Nanofiltration Membrane 280 Series NF-280-82
UltraClean UC NF280 series nanofiltration membrane elements have ultra-high flux, can highly remove TOC and THM (trihaloalkane) precursors, while divalent salts passed moderately, other salts passed moderately or to a higher degree.
Product Description
UltraClean UC NF280 series nanofiltration membrane elements have ultra-high flux, can highly remove TOC and THM (trihaloalkane) precursors, while divalent salts passed moderately, other salts passed moderately or to a higher degree. It is to remove organic matter in surface water and groundwater and moderately soften, concentrate, separate or purify ideal membrane element for inorganic salts, organics, natural medicines and fermentation broths. NF280-400/34 elements have large membrane area and high water yield, providing a wide range of water treatment and concentration and separation application options for industrial production. It is suitable for systems that remove TOC, THM precursors and salts from water under ultra-low pressure conditions with low operating energy consumption, as well as in material separation, municipal and industrial water treatment.
Product Highlights
Excellent removal of salts
Suitable for removing TOC and THM precursors
Salt removal under ultra-low pressure and low energy consumption
Membrane Performance Specification
| Effective Membrane Area ft²(m²) | Stablized Rejection Rate(%) | Flux gpd(m³/d) |
| 82(7.6) | 40-60%(CaCI2) ≥99%(MgSO4) | 2,925 (11.1) CaCI2 2,500 (9.4) MgSO4 |
Test conditions: inlet pressure 0.48 MPa (70 psi); inlet temperature 25°C (77°F); inlet water quality 500ppm CaCl2, 2,000 ppm MgSO4 inlet pH 8; recovery 15%.
General Information
The first full tank of permeate should be discarded, DO NOT use this initial permeate for drinking water or food preparation.
Keep membrane moist at all times after initial wetting.
To stop growth during prolonged system shutdowns, it is recommended that membrane elements be immersed in a preservative solution.
Operating and Cleaning Limits
| Maximum Operating Pressure | 41 bar (600 psi) |
| Maximum Operating Temperature | 45°C (113°F ) |
| Maximum Element Pressure Drop | 1.0 bar (15psi) |
| pH Range Continuous Operation | 2-11 |
| pH Range Short-Term Cleaning | 1-13 |
| Maximum Feed SDI(SDI15) | 5.0 |
| Free Chlorine Tolerance | < 0.1 ppm |
Permeate flow for individual elements may vary ±15 percent from the value specifed.
Active membrane area guaranteed ±4%.
Stabilized salt rejection is generally achieved within 24-48 hours of continuous use; depending upon feedwater characteristics and operating conditions.
