Study on wastewater zero discharge technical scheme for coal-fired power plants

Abstract

Abstract: Wastewater zero discharge from thermal power plants is key to environmental protection at present.How to realize the zero discharge of wastewater from coal-fired power plants is analyzed considering existing wastewater treatment facilities and processes. The results show that all kinds of wastewater can be classified and utilized step by step by optimizing the wastewater treatment system. Reverse osmosis concentrated water can be used as supplementary water of desulfurization system so as to reduce the wastewater discharge and improve its reuse rate. Desulfurization wastewater that cannot be reused is processed by evaporative crystallization and flue gas evaporation， which achieves overall wastewater zero discharge.This scheme is of social and environmental benefits.

Key words: liquid zero discharge, cascade utilization, reverse osmosis concentrated water, desulfurization wastewater, evaporation crystallization, flue evaporation

CHEN Haijie, LI Fei, SUN Ying, GU Xiaobing, GAO Fei, YANG Linjun. Study on wastewater zero discharge technical scheme for coal-fired power plants[J]. Huadian Technology, 2020, 42(9): 88-92.

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Study on wastewater zero discharge technical scheme for coal-fired power plants

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