GE P&W Spiral Wound Membranes - Duratherm HWS Series - Manual

Fact Sheet
Duratherm* HWS Series
Hot Water Sanitization Pure Water Elements
Description and Use
The Duratherm* HWS Series includes RO, NF and
UF membrane elements. This Series is specifically
designed to maximize the benefits of hot water
sanitization for industries relying on chemical free
sanitization for product quality and/or industry
compliance standard.
Separation system sanitization protocol is per-
formed via periodic exposure to temperature as
high as 195°F (90°C) at minimum feed pressure to
kill microorganisms by denaturation and coagula-
tion of the proteins chains.
The Duratherm HWS RO and HWS NF are suitable
for separation systems purifying water at temper-
ature up to 122°F (50°C) in low crossflow environ-
ment and no suspended solids.
This Series includes a variety of size 8”, 4” and 2.5”
diameters. All element constructions include
Durasan* Cage outer wrap, Polysulfone ATD and
central tube.
Features and Benefits
• Prevent bio-fouling development
• No disposal costs
• 100% wet testing Quality Assurance
• Durable construction
• Sanitization on the permeate side
Markets
• Food / Beverage
• BioPharm
• Electronics
• Chemical
Table 1: Element Specification
Membrane A-Series, Thin-film membrane (TFM*) a,b
D-Series, Thin-film membrane (TFM*) c
P-Series, Polyethersulfone d
a=HWS RO-HR, b=HWS RO, c=HWS NF, d=HWS UF
Model
Maximum
Crossflow
gpm (m3/h)
Average
permeate flow
gpd (m3/day)
Average salt
rejection
/ MWCO
Duratherm HWS RO2540HR 1,4 4 (0.9) 620 (2.3) 99.5%
Duratherm HWS RO4040HR 1,4 20 (4.5) 2,300 (8.7) 99.5%
Duratherm HWS RO8040HR 1,4 65 (14.8) 9,900 (37.5) 99.5%
Duratherm HWS RO2540 2,4 4 (0.9) 760 (2.9) 99.0%
Duratherm HWS RO4040 2,4 20 (4.5) 2,200 (8.3) 99.0%
Duratherm HWS RO8040 2,4 65 (14.8) 9,200 (34.8) 99.0%
Duratherm HWS RO8040, WET 65 (14.8) 9,200 (34.8) 99.0%
Duratherm HWS SG8040 2 60 (13.62) 8,600 (32.6) 98.5%
Duratherm HWS NF4040 3,4 20 (4.5) 2,100 (7.9) 98.6%
Duratherm HWS NF8040 3,4 65 (14.8) 8,500 (32.2) 98.6%
Duratherm HWS UF8040 65 (14.8) -- 10,000 Da
1 Testing conditions: 2,000ppm NaCl solution at 225psig (1,550kPa) operating
pressure, 77°F, pH7.5 and 15% recovery before any hot water sanitization.
2 Testing conditions: 500ppm NaCl solution at 115psig (790kPa) operating
pressure, 77°F, pH7.5 and 15% recovery before any hot water sanitization.
3 Testing conditions: 2,000ppm MgSO4 solution at 110psig (760kPa) operating
pressure, 77°F, pH7.5 and 15% recovery before any hot water sanitization
4 Average salt rejection after 24 hours operation. Individual flow rate may vary
+25%/-15%. Final permeate flow rate is subject to variations in the heat treat-
ments. In most cases, the permeate flow rate after heat treatments will stabi-
lize at 30-50 percent below the nominal flowrate before heat treatment. For a
conservative design, consider a permeate flow reduction of 50%.
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FS1270EN.doc Jan-14