RO Membrane Compaction - Reverse Osmosis Systems Print E-mail

RO Membrane Compaction - Membrane compaction refers to the physical compression of the RO membrane itself. This compression results in a decrease in flux. The rate of compaction is directly proportional to an increase in temperature and pressure.

Compaction of the reverse osmosis membrane occurs naturally over time requiring a greater feed pressure. Feed pumps are sized to the pressure requirements of the third year. Compaction is permanent and can occur quickly in Cellulose Acetate membranes if operated at high pressures for any extended period of time. Polyamide membranes have greater structural strength and can be operated at higher than normal pressures with little concern to compaction. Change as a result of compaction is expected for Cellulose Acetate and Thin Film Composite membranes during the first 200 hours of operation.

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