Lg Chem, Ltd

Ayoung Lee

Chong Kyu Shin

Phill Lee

Dae Hun Kim

Kyunghoon Min

Bumjoo Kim

Ye Hoon Im

Sung Kyung Park

Yun Seok Choe

Bong Ju Kwak

Provided is a reverse osmosis membrane comprising: a support layer comprising a support and a polysulfone layer; and an active layer, wherein a compression modulus is from 20 MPa to 40 MPa, to a method for manufacturing the same, and a water-treatment module.

Reverse osmosis membrane, manufacturing method therefor, and water treatment module

The present specification provides a composition comprising a material of Chemical Formula 1: having a molecular weight of 500,000 to 700,000 where R1 and R2 are the same as or different from each other, and each independently is hydrogen, deuterium, or an alkyl group, and n is from 10,000 to 20,000, for forming a reverse osmosis membrane protective layer, a method for preparing a reverse osmosis membrane using the same, a reverse osmosis membrane and a water-treatment module.

Composition for forming reverse osmosis membrane protection layer, method for preparing reverse osmosis membrane using same, reverse osmosis membrane, and water treatment module

Provided is a feed spacer having a three-layer structure, in which a set forming the feed spacer is formed in a three-layer structure, so that the set, which is in contact with a reverse osmosis membrane, convects raw water to a center of the structure of the feed spacer and a laminar flow velocity gradient is generated at the center to decrease a polarization phenomenon of a reverse osmosis filter module and minimize pressure loss, and a reverse osmosis membrane filter module including the feed spacer.

Feed spacer having three-layered structure, and reverse osmosis membrane filter module including same

Provided is a feed spacer, in which angles of strands are differently formed in one feed spacer according to a flow direction of raw water, so that a differential pressure decrease region and a recovery increase region are separated to perform multiple functions, and a reverse osmosis filter module including the feed spacer.

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Daejeon, South Korea

Ayoung Lee