公开(公告)号：US20180186663A1

公开(公告)日：2018-07-05

申请号：US15819812

申请日：2017-11-21

Applicant: Korea University Research and Business Foundation

Inventor： Seung-Kwan HONG ,  Jung-Bin KIM

IPC: C02F1/44 ,  B01D61/02

CPC classification number: C02F1/441 ,  B01D61/022 ,  B01D61/08 ,  B01D2311/25 ,  B01D2313/20 ,  B01D2317/022 ,  C02F2201/007 ,  C02F2209/10 ,  C02F2301/022 ,  C02F2301/046 ,  C02F2301/08

Abstract: Disclosed is a water treatment apparatus using reverse osmosis including: a PV module including a plurality of reverse osmosis modules arranged at multiple stages and connected to one another such that concentrate of one stage is fed to the following stage; a raw water supply pump feeding raw water to the PV module; a circulation pipe returning product water processed by several reverse osmosis modules disposed at rear stages of the PV module, to be mixed with the raw water; and a product water discharge pipe discharging product water processed by the remaining reverse osmosis modules disposed at front stages of the PV module, out of the PV module. The water treatment apparatus can reduce the TDS concentrations of product water and raw water while minimizing the volume loss of product water by returning a portion of the product water processed by the PV module to be circulated.