HYBRID SALINITY GRADIENT POWER GENERATION SYSTEM FOR CONCENTRATED BRINE AND FRESH WATER

摘要

The present invention relates to a hybrid salinity differential power generation system using salt differential energy between high concentration brine and fresh water and combining pressure retarded osmosis (PRO) and reverse electrodialysis (RED). The hybrid salinity differential power generation system according to the present invention comprises an osmotic device (PRO) having a first portion to which high-concentration brine is supplied, a second portion to which fresh water is supplied, and a semipermeable membrane for partitioning the first portion and the second portion, )Wow; A pressure recovery device for recovering the pressure of the low-concentration brine having passed through the first portion to pressurize the high-concentration brine supplied to the first portion; A turbine for generating electric power using low-concentration brine having passed through the first portion; And a first reverse electrodialysis unit (RED) for producing electric power using low-concentration brine having passed through the turbine and fresh water having passed through the second portion. According to the present invention, the power generation efficiency can be maximized and the loss energy can be minimized.