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3. DIAGNOSTICS OF MEMBRANE FOULING AND SCALING
Feed
Test Cell
P Pressure Gauge
By-pass
Pump
Feed
Concentrate
Membrane
Permeate
PC
Feed Tank (10L)
Concentrate
O-ring RO Membrane
FIGURE 3.19
Permeate Spacer
Schematic of standard membrane test cell.
TABLE 3.3
Serial Number
A609590 (lead)
A608298 (tail)
Example of Cell Test Results of Lead and Tail SWRO Elements
Membrane Type
SWC3
Minimum Rejection
99.5%
Flux
Lmh (gfd)
32.3 (19)
Membrane Cell Test Performance Data
Membrane Specifications Nominal
Test Data (Averages)
Flux, Lmh Rejection (gfd)
99.63% 27.7 (16.3) 98.78% 20.4 (12.0)
Change in %
Salt Flux, Lmh Passage (gfd)
26% 14% รพ144% 37%
Test conditions:
Pressure: 15.2 bars (800 psi)
Feed concentration: 32,200 ppt NaCl Flow: 0.34 m3/h (1.5 gpm)
Feed temperature: 21.9 0.3C
