GE P&W Spiral Wound Membranes - AK LE Series - Manual

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FSpwAKLESeries_EN Oct-11
Fact Sheet
AK LE Seri e s
High Flow Low Energy Brackish Water RO Elements
The A-Series family of proprietary thin-film reverse
osmosis membrane is characterized by high flux
and high sodium chloride rejection. AK LE brackish
water elements are selected when high rejection,
high flow and ultra-low operating pressures are
desired.
The AK LE element is a low energy high flow ele-
ment for beverage, light commercial, residential
and general industrial applications. AK LE Series
elements feature a Fiberglass outer wrap.
Table 1: Element Specification
1 Average salt rejection after 24 hours operation. Individual flow rate
may vary +25%/-15%.
2 Testing conditions: 500ppm NaCl solution at 115psi (793kPa) operat-
ing pressure, 77°F (25°C), pH7 and 15% recovery.
Table 2: Operating and CIP parameters
3 SDI is measured on a non-linear scale using a 0.45 micron filter paper.
Additionally, finer colloids, particulates and microorganisms that pass
through the filter paper and not measured in the SDI test, will potential-
ly foul the RO element. For performance consistency and project war-
ranty, please use Winflows projection software and consult your Filters
with Membranes representative.
Figure 1a: Element Dimensions Diagram – Male
Figure 1b: Element Dimensions Diagram – Female
Membrane Thin-film membrane (TFM*)
Model
Average
permeate flow
gpd (m3/day) 1,2
Average
NaCl
rejection 1,2
Minimum
NaCl
rejection 1,2
AK-90 LE 2800 (10.6) 99.3% 99.0%
AK-400 LE 12300 (46.6) 99.3% 99.0%
AK-440 LE 13500 (51.1) 99.3% 99.0%
Model Active area
ft 2 (m 2 )
Outer wrap
Part
number
AK-90 LE 90 (8.4) Fiberglass 3056683
AK-400 LE 400 (37.2) Fiberglass 3056684
AK-440 LE 440 (40.9) Fiberglass 3056685
Typical Operating Pressure 110 psi (758 kPa)
Typical Operating Flux 10-20GFD (15-35LMH)
Maximum Operating Pressure 400 psi (2,758 kPa)
Maximum Temperature Continuous operation: 122°F (50°C)
Clean-In-Place (CIP): 122°F (50°C)
pH range Optimum rejection: 7.0-7.5,
Continuous operation 4.0-11.0,
Clean-In-Place (CIP): 2.0-11.5
Maximum Pressure Drop Over an element: 12 psi (83 kPa)
Per housing: 50 psi (345 kPa)
Chlorine Tolerance 1,000+ ppm-hours,
dechlorination recommended
Feedwater 3 NTU < 1
SDI < 5