Due to complex composition of desulfurization wastewater from coal-fired power plants,the dis-charge of desulfurization wastewater is the most difficult part of zero discharge of wastewater.This paper de-scribes the characteristics of desulfurization wastewater quality,conventional treatment technologies and reuse approaches in coal-fired power plants.With increasing environmental protection policy requirements and im-proved treatment technologies,this paper emphatically analyzes the advantages and disadvantages of main-stream technologies used at key stages(i.e.pretreatment,volume reduction by concentration and end solidifica-tion)for zero discharge of desulfurization wastewater.Besides,this paper also summarizes the main factors that should be considered in selecting the zero discharge technology of desulfurization wastewater and looks forward to the future development direction.
关键词
燃煤电厂/脱硫废水/零排放
Key words
Coal-fired Power Plants/Desulfurization Wastewater/Zero Discharge
维普
万方数据