Apparatus and method for multistage reverse osmosis separation

Details Apparatus and method for multistage reverse osmosis separation Apparatus and method for multistage reverse osmosis separation

B - Operations, Transporting

01

D

B01D 61/08 (2006.01) B01D 61/02 (2006.01) C02F 1/44 (2006.01)

Patent

CA 2160330

This invention relates to an apparatus and method for a multistage reverse osmosis separation which comprises reverse osmosis membrane module units arranged at multistage with a booster pump provided in the concentrate flow channel between reverse osmosis membrane module unit, wherein the total effective reverse osmosis membrane area of a module unit is in the range of 20-80% of that of the preceding module unit. The object of this invention is to provide apparatus and separation method that produce low-concentration solution from high-concentration solution with a high recovery ratio, small energy requirements, and high stability.

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