Nanofiltration membranes allow for different rejections: monovalent and divalent. It is possible to permeate selectively due to this feature. The main applications are PR solutions, dyes, special chemicals, expensive raw material recovery and pretreatment for removing parts of monovalents: Tone-ions and rejecting divalent Tone-ions in seawater processes.
Model Flow Rate
(GPD,m3/d)
NaCl
Rejection(%)
MgSO4
Rejection (%)
Diameter/
Length (inch)
Test Conditions Spec Sheet
NE8040-40* 10,000 (37.9) 20-40 8.0 / 40 NE Standard
NE8040-70* 7,000 (26.5) 40-70 97 8.0 / 40 NE Standard
NE8040-90* 8,000 (30.3) 85-95 97 8.0 / 40 NE Standard
NE4040-40* 2,100 (9.45) 20-40 4.0 / 40 NE Standard
NE4040-70* 1,500 (5.7) 40-70 97 4.0 / 40 NE Standard
NE4040-90* 1,700 (6.0) 85-95 97 4.0 / 40 NE Standard
NE Standard test conditions: NaCl 2,000 mg/L, Pressure 75 psig, Temperature 25°C, pH 6.5-7.0 Recovery 15%
MgSO4 rejection test conditions: MgSO4 2,000 mg/L, Pressure 75 psig, Temperature 25°C, pH 6.5-7.0 Recovery 15%
The stated data were obtained after 30 minutes of operation
* These models are tested and certified by NSF to NSF/ANSI standard 61