The A-Series, family of proprietary thin-film reverse osmosis membrane elements are characterized by high flux and excellent sodium chloride rejection. AD High Rejection Seawater Elements are selected when extremely high quality permeate is demanded from seawater that is relatively high in TDS. These elements provide excellent rejection characteristics when operated at pressures exceeding 800 psi (5,516 kPa) and elevated seawater temperature conditions. AD4040FF High Rejection Seawater elements feature a FRP outerwrap and 27 mil feed spacers. This element is designed with male end connections.
Element Specifications
Model
Flow
Active Area
Avg. Rejection
Min. Rejection
Part Number
AD4040FF
1,250 GPD (4.7 m3/d)
88 ft2 (8.2 m2)
99.6%
99.2%
1223378
Specifications are based on a 32000 mg/L NaCl solution at 800 psig feed pressure (5516kPa), 77°F,(25°C), 7% recovery, pH 7.5 after 24 hours. Individual flux may vary +25%/ -15%.
Operating and Design Parameters
Membrane:
Thin Film Membrane (TFM®)
Typical Operating Pressure:
800 psig (5,516 kPa)
Maximum Pressure:
1,200 psig (8,274 kPa)
Maximum Temperature:
122°F (50°C)
Chlorine Tolerance:
1,000 ppm-hrs, dechlorination recommended
Optimum Rejection pH:
7.0 -7.5
Operating pH Range:
4.0 - 11.0
Cleaning pH Range:
2.0 - 11.5
Maximum Pressure Drop:
10 psig (69 kPa) per element 50 psig (345 kPa) per vessel
Feed NTU:
<1
Feed SDI:
<3
Typical Operating Flux:
10-20 GFD (15-35) L.H-1.M-2
Element Dimensions and Weight
Model Number Legend
AD
4040
F
F
Model
Dimension A
Dimension B
Dimension C*
Weight
AD4040FF
40" (1,016 mm)
0.75" (19 mm)
3.88" (99 mm)
12.0 lbs (5.4 kg)
*The element diameter (dimension C) is designed for optimum performance in Osmonics pressure vessels. Other pressure vessel dimension and tolerance may result in excessive bypass and loss of capacity.
