TWO-PASS REVERSE OSMOSIS DESALINATION APPARATUS AND METHOD

摘要

A two-pass reverse osmosis (RO) desalination apparatus includes a first RO module for receiving feed water through an inlet pipe to desalinate the feed water; and a second RO module for receiving primarily treated water to desalinate the primarily treated water. Further, the two-pass RO desalination apparatus includes a bypass pipe through which bypass water branched from the first RO module or the inlet pipe bypasses such that the bypass water may not be desalinated in the first or the second RO module. Furthermore, the two-pass RO desalination apparatus includes a product water pipe through which a product water in which the secondarily treated water is blended with the bypass water passes; and a controller for controlling the flow rate of the water passing through the first or second RO module, or the pipes.