Performance requirements and specifications of reverse osmosis membranes

(1) the permeability of water should be large, high desalination rate.

(2) has a certain degree of strength and firmness, not due to water pressure and tension affect the deformation and fracture. The membrane is compacted as little as possible, water flux attenuation is small, to ensure a stable water production.

(3) structure should be symmetrical, can be made into the required structure.

(4) can adapt to the larger pressure, temperature and water quality changes.

(5) has a good temperature, acid and alkali resistance, oxidation resistance, hydrolysis resistance and resistance to bio-pollution erosion performance.

(6) Longer service life.

(7) cost is low.