采用内电解法对印染废水进行深度处理

STUDY ON THE ADVANCED TREATMENT OF DYE WASTEWATER USING IRON-CARBON INTERNAL ELECTROLYSIS

采用内电解法对经过生化处理后仍不能达标的印染废水进行深度处理实验,结果表明:当pH维持在4左右,反应时间控制在16min左右时,出水投加Ca(OH)2约2g/L混凝沉淀,则废水的色度去除率可达87.5%,COD的去除率也可达到50%～80%,处理后的出水完全达到GB8978-1996《污水综合排放标准》一级标准的要求。

After being treated by biological method,the dye wastewater can not meet the national standard,so internal electrolysis is used as a follow-up treatment of biochemical treatment.It is analyzed the relationship between removal rate and those factors such as the pH,time and coagulation dosage.When pH=4,Ca(OH)_2 dosage is 2g/L,the decoloring rate can be 87.5% and the removal rate of COD is 50%~80%.The effluent can meet the filst-order of' Waste water Integrated discharge Stand'.