SWC4 are the highest salt rejection membranes used to treat varying levels of seawater salinity and produce a low TDS permeate. SWC4 SWC4 membranes are available in two different types, LD and MAX.
Low differential LD Technology models are introduced to minimize colloidal fouling when used in conjunction with conventional pretreatment equipment. Offers consistently low loading pressures and the highest duration between two consecutive cleanings.
MAX models have 440 ft 2 (40.9 m 2 ) of active membrane surface area. Provides excellent performance with high TDS and boron removal from hot water.
Permeate flow: 6,500 gpd (24.6 m3/d)
Salt rejection: 99.8% (minimum 99.7%)
Boron Rejection (Typical): 93.0%
Configuration: Spiral Wound
Membrane Polymer: Composite Polyamide
Membrane Active Area: 400 ft2 (37.1m2 )
Minimum ratio of Concentrate to Permeate flow for any Element: 5:1
Maximum Pressure Drop Per Element: 10 psi
Maximum Applied Pressure
1200 (8.27)
Maximum Chlorine Concentration:
< 0.1
Maximum Operating Temperature:
113 (45)
pH Range, Continuous (Cleaning)
2-11 (1-13)
Maximum Feedwater Turbidity
1.0
Maximum Feedwater SDI (15 mins)
5.0
Maximum Feed Flow
75 (17.0 )