混凝_MBR工艺处理印染废水试验研究

A Study of Treatment of Printing and Dyeing Wastewater from Complex Coagulant and Membrane Bioreactor

本试验采用混凝沉淀_MBR工艺对印染废水进行处理。试验研究表明:混凝后COD的去除率达到80%以上,BOD5的去除率达到55%以上,色度的去除率达到84%以上;再经MBR处理,出水COD低于30mg/L,BOD5低于10mg/L,色度低于30度,达到了回用水的标准。

Complex coagulant and membrane bioreactor is used to treat the printing and dyeing wastewater. The promising experimental results were obtained and showed as following： the removal of COD was higher than 80 % after coagulation, the removal of BOD5 was higher than 55 % after coagulation, the removal of color was higher than 84 % after coagulation. The effluent of coagulation was further treated by a Membrane Bioreactor. The COD of final effluent was below 30 mg/L, the BOD5 of final effluent was below 10 mg/L, the color of final effluent was below 30 degree. The effluent met the need of the standard of the reclaimed water.