Figure 1: Schematic diagram of spiral wound RO membrane: (1) Feed tank, (2) RO spiral wound membrane module, (3) Cooling tank, (4) Measuring cylinder, (5) Plunger pump, (6) Inlet pressure gauge, (7) Outlet pressure gauge, (8) Retentate flow rate, (9) Permeate flow rate, (10) Retentate control valve, (11) Feed control valve, (12) Drainage valve, (13) Bypass valve, (14) Sampling valve.