GE P&W MUNI NF User Manual
Fact Sheet
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FS1274EN.doc Nov-13
Membrane
Thin-Film Membrane (TFM*)
Model
Average
permeate flow
gpd (m3/day)
1,2
Average
MgSO4 rejection
1,2
MUNI-NF-400
11,500 (43.5)
98.0%
Model
Active area
ft2 (m2)
Outer wrap
Part
number
MUNI-NF-400
400 (37.2)
Fiberglass
1242400
Model1
Dimensions, inches (cm)
Boxed
A
B2
C3
Weight
lbs (kg)
MUNI-NF-400
40.0
(101.6)
1.125
(2.86)
7.9
(20.1)
32
(14.5)
Typical Operating Pressure
70-300psi (483 – 2,069kPa)
Typical Operating Flux
10-20GFD (15-35 LMH)
Maximum Operating Pressure
600psi (4,137kPa)
Maximum Temperature
Continuous Operation: 113°F (45°C)
Clean-In-Place (CIP): 104°F (40°C)
Minimum Crossflow
30gpm (6.8m3/h)
pH Range
Continuous Operation: 3.0-9.0,
Clean-In-Place (CIP): 2.0-10.5
Maximum Pressure Drop
Over an element: 12psi (83kPa)
Per housing: 50psi (345kPa)
Chlorine Tolerance
1,000+ ppm-hours,
dechlorination recommended
Feedwater
NTU < 1
SDI < 5
Recommended single element
recovery
< 15 %
MUNI NF Series
Membrane Elements for Municipal Drinking Water Plants
The GE Water & Process Technologies MUNI NF series is engineered to provide a low pressure and
cost effective nanofiltration alternative to standard
RO treatment. The resulting product is virtually free
of any harmful biological matter. Performance is
characterized by hardness reduction, color removal,
and organic pollutants reduction (such as the precursors to THM).
The MUNI NF membrane element is tested and certified by NSF international against NSF/ANSI Stand-
ard 61 for material requirements only.
The MUNI NF membrane is an element following a
100% Wet Test Quality Assurance.
Figure 2: Element Dimensions Diagram – Female
Table 2: Dimensions and Weight
Figure 1: High Flow Rate at Low Pressure Drop
Table 1: Element Specification
1
Average salt rejection after 24 hours operation. Individual flow rate may vary
+25%/-15%.
2
Testing conditions: 2,000ppm MgSO4 solution at 110psi (760kPa) operating
pressure, 77 °F, pH 7.5 and 15% recovery.
1
These elements are dried and bagged before shipping.
2
Internal diameter.
3
The element diameter (dimension C) is designed for optimum performance in GE
Water & Process Technologies pressure vessels. Others pressure vessel dimension
and tolerance may result in excessive bypass and loss of capacity.
Table 3: Operating and CIP parameters
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