脱硫废水零排放深度处理的工艺分析

Analysis on Advanced Treatment Process of Zero Discharge of Desulphurization Wastewater

目前,国内大多数火电厂的湿法脱硫废水处理系统采用传统的加药絮凝沉淀工艺,但整体投运率很低。经传统处理系统处理后脱硫废水中SS和COD的浓度较高,且无法除去水中的Cl-。因含有高浓度的Cl-,导致处理后的废水无法回收利用。出于环保要求和经济效益的考虑,采用深度处理的技术实现废水零排放是废水处理的必然趋势。

At present, most domestic thermal power plant desulfurization wastewater treatment system adopts traditional dosing flocculation sedimentation process, but the overall operation rate is very low. The high concentration of SS and COD of traditional treatment desulfurization wastewater, and to remove the water of the Cl-. Because of containing high concentration of Cl-, resulting in the treated wastewater can＇t be recycled. For environmental protection requirements and economic benefits, the use of advanced technology to achieve zero discharge of wastewater is the inevitable trend of wastewater treatment.