GE P&W Spiral Wound Membranes - Seasoft Series - Manual

Fact Sheet
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FS1288EN.doc Sep-13
Seasoft* Series
NF Elements for Sulfates and Hardness Removal from Seawater
NF Applications for Seawater
NF has the unique ability to selectively reject ions:
 Rejection of anions with more than one negative
charge
 Rejection of cations depending on shape and size
 Rejection of organic if molecular weight is >200-
300 Daltons
 At least 80% of water hardness is removed with
low operating pressure and high flux.
Seasoft HR/HF Elements:
Fouling-Resistance Seasoft elements prevent:
 Scale formation by removal of hardness and sul-
fates
 Fouling by removal of turbidity and bacteria on
down stream equipment.
Seasoft HR for Applications Requiring:
 High Hardness Rejection 95%+
 High Sulfate Rejection 99%+
 Sodium Chloride Rejection 20-30%
Seasoft HF for Applications Requiring:
 High Flux at Low Pressure
 High Hardness Rejection 95%+
 High Sulfate Rejection 99%+
 High Sodium Chloride Passage
Table 1: Element Specification
Membrane Thin-film membrane (TFM*)
Model
Average
permeate flow
gpd (m3/day) 1,2
Minimum
MgSO4 rejection 1,2
Seasoft 8040 HR 7,800 (29.5) 98%
Seasoft 8040 HF 9,300 (35.2) 96%
1 Average salt rejection after 24 hours operation. Individual flow rate may vary
+25%/-25%.
2 Testing conditions: 2,000ppm MgSO4 solution at 110psig (760kPa) operating
pressure, 77°F, pH7.5 and 15% recovery.
Model
Active area
ft 2 (m 2 )
Outer wrap
Part
number
Seasoft 8040 HR 387 (36.0) Fiberglass 1233954
Seasoft 8040 HF 387 (36.0) Fiberglass 1233938
Figure 1: Element Dimensions Diagram
Table 2: Dimensions and Weight
Model 1
Dimensions, inches (cm) Boxed
A B 2 C 3
Weight
lbs (kg)
Seasoft 8040 HR
40.0
(101.6)
1.125
(2.86)
7.9
(20.1)
29
(13.2)
Seasoft 8040 HF
40.0
(101.6)
1.125
(2.86)
7.9
(20.1)
29
(13.2)
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
Typical Operating Pressure 70-400psig (483-2,758kPa)
Typical Operating Flux 10-15GFD (15-25LMH)
Maximum Operating Pressure 600psig (4,140kPa)
Maximum Temperature Continuous Operation: 122°F (50°C)
Clean-In-Place (CIP): 104°F (40°C)
pH Range Continuous Operation: 3.0-9.0,
Clean-In-Place (CIP): 2.0-10.5
Maximum Pressure Drop Over an element: 12psi (83 kPa)
Per housing: 50psi (345 kPa)
Chlorine Tolerance 500+ ppm-hours,
dechlorination recommended
Feedwater NTU < 1
SDI < 5