Recovery Rate Of RO Reverse Osmosis Membrane

The recovery rate of RO membrane refers to the percentage of feed water converted into product water or permeate in the reverse osmosis membrane system. It is determined based on the quality of the pre-treated influent water and the water requirements in the reverse osmosis system. The recovery rate of the RO membrane system is determined during the design.
(1) Recovery rate of RO membrane = (product water flow rate of RO membrane/influent water flow rate) × 100%
(2) The calculation formulas for the recovery rate, salt permeability, and desalination rate of reverse osmosis (nanofiltration) membrane modules are as follows:
Recovery rate of reverse osmosis membrane module = RO membrane module water production/influent water × 100%
Salt permeability of reverse osmosis membrane module = RO membrane module water production concentration/influent water concentration × 100%