铁炭微电解-混凝沉淀预处理密度纤维板热磨废水

研究了铁炭微电解-混凝沉淀对于密度纤维板热磨废水的预处理效果。通过试验,得出处理该废水的组合工艺最佳条件为:调节废水初始pH值为3.0,进行铁炭微电解反应60min,然后调节pH值为8.5,进行混凝沉淀60min。在进水COD的质量浓度为5183mg/L,色度为500倍时,经组合工艺处理后,COD去除率可达92%以上,脱色率达99%以上,且出水生化性好。

Pretreatment of hot grinding wastewater from density fibreboard production by ferric carbon microelectrolysis-coagulation sedimentaion process

The pretreatment ofhotgrinding wastewater from density fibreboard production by ferric carbon microelectrolysis-coagulation sedimentation process was studied.Through the experiment,the optimal condition for the combination process was determined as follows: adjusting the initial pH to 3.0,controlling the reaction time of ferric carbon microelectrolysis within 60min,and then,adjusting pH value to 8.5,controlling time of coaguation sedimentation in 60min.When the mass concentration of initial COD was 5 183mg/L,the chroma was 500 times,after the treatment by the combination process,the removal rate of COD and chroma could above 92% and 99% respectively,and the biodegradability of the effluent water was alsogood.