Introduction:
The replacement Dow IW74-1100 UF membrane module offers one of the largest membrane areas in the industry in a short module format. It is an ideal choice for containerized system designs where its large filtration area and short height can contribute substantially to system savings.
Replacement DOW IW74-1100 Ultrafiltration Mebrane Modules can be used for a variety of treatment applications including surface water, seawater pretreatment, industrial wastewaters, and secondary effluent wastewater.
Replacement Dow IW74-1100 UF membrane module's feature:
74 m2 of filtration area in a short module format to enable system designs with height constraints
0.03 µm pore size which enables removal of bacteria, viruses, and particulates; Up to 6 log removal of bacteria, up to a 2.5 log removal of viruses, and <2.5 SDI filtrate quality
PVDF fibers free of macro voids which offer excellent break resistance, chemical and fouling resistance; which allows for extended membrane life and consistent long term performance
Outside-In flow configuration which allows higher TSS feed waters, while maintaining reliable system performance and producing high quality filtrate
Streamlined integrated PVC housing that eliminates non value added parts to make room for more fibers, while reducing fiber packing density at module extremities and improving removal of suspended solids to limit module fouling
Integrated lifting handles improve ergonomics during installation and maintenance
Potting design eliminates gaskets between filtrate and concentrate compartments reducing maintenance requirements and streamlines fiber repair in the unlikely event of fiber breakage
Replacement Dow IW74-1100 UF membrane module's specification:
Original model: IW74-1100
Vendor's model: LF-IW741100
Membrane area: 74 m2 (797 ft2)
Module volume: 28 liters (7.4 gallons)
Weight (empty): 49kg (108lbs)
Weight (shipping): 56kg (123lbs)
Weight (flooded): 76kg (168lbs)
Replacement Dow IW74-1100 UF membrane module's sizes:
L: 1780 ± 4.5 mm
L1: 1442 ± 1.5 mm
L2: 1593 ± 3.0 mm
L3: 1747 mmD: 219 mm
W1: 190 mm
W2: 297 mm
Connections: 50 DN Coupler
Air port: G3/8''
Operating parameters:
Filtrate Flux @ 25ºC: 40 - 120 l/m2/hr
Flow Range: 3.0 – 8.8 m3/hr
pH, Operating: 2 - 11
pH, Cleaning: 2 - 12
Temperature: 1 - 40ºC
Max. Inlet Module Pressure (@ 20°C): 5 bar
Max. Operating TMP: 2.1 bar
Max. Operating Air Scour Flow: 20 Nm3/hr
Max. Backwash TMP: 2.5 bar
NaOCl (max): 2,000 mg/L
TSS (max): 100 mg/L
Turbidity (max): 300 NTU
Particle Size (max): 300 µm
Flow Configuration: Outside In, Dead End Flow
Expected Filtrate Turbidity: ≤ 0.1 NTU
Expected Filtrate SDI: ≤ 2.5
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