NF280 Membranes

Nanofiltration (NF) Membranes

NF280 Membranes

IonClear™ NF 280 membranes have ultra-high flux and are capable of removing TOC and THM (trihalides) precursor, at the meantime, NF 280 series offer some selectivity in the passing of divalent salts with moderate passing rate and other salts passing with higher passing rate. It is an ideal membrane element for removing organic matter from surface water and groundwater, softening, concentrating, separating or purifying inorganic salts, organic matters, natural drugs and fermentation broth. NF 280 series have high permeate flux rate, providing a wide range of water treatment, concentration and separation applications for industries. Suitable for removal of TOC, THM precursors, salts, low operating energy consumption systems under ultra-low pressure, as well as for material separation, municipal and industrial water treatment.

  • High flux

  • High removal of TOC and THM precursors

  • Excellent softening and decolorizing properties

  • Ultra-low operating pressure and power consumption

Product Dimensions
Model
A inch (mm)
B inch (mm)
C inch (mm)
D inch (mm)
NF-28 0-400
40(1,016)
/
1.125 (29)
7.9 (201)
NF-280-82
37.9(963)
1.05 (26.7)
0.75(19)
3.9 (99)
Product Specifications
Model
Effective Membrane ft² (㎡)
Stabilized Rejection Rate(%)
Flux, gpd (m³/d)
NF-280-400
400(37.2 )
>97
12410(47)
NF-280-82
82(7.6)
>97
2430(9.2)

Flux and rejection rate is based on the following standard test conditions: 0.48 MPa (70 psi) pressure, 77°F (25°C), 2,000 ppm MgSO solution and pH 8 for feedwater, and 15% recovery.

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            3-10
  • pH Range Short-Term Cleaning               1-12
  • Maximum Feed SDI(SDI )                         5.0
  • Free Chlorine Tolerance                            < 0.1 ppm
Notes
  • Permeate flow for individual elements may vary ±15 percent from the value specified.
  • 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.