Practice of Zero Discharge Project for Desulfurization Wastewater of 1000MW Coal-fired Unit

Abstract

The technological process, technical parameters, operation cost and effect of zero discharge project for desulphurization wastewater of 1000MW coal-fired unit in East China are analyzed. The project mainly adopts the process of softening pretreatment, membrane concentration and evaporation crystallization, the direct cost of per ton water treatment is about ￥35.3, and the final product is high purity industrial salt. This technology fully realize the zero discharge requirement of desulphurization wastewater, and has good envir(can )tal and economic benefits.