基于MVR技术的高浓度乳化废水处理研究

Research on Highly-concentrated Emulsified Wastewater Treatment Based on MVR Technology

本文就MVR技术在汽车行业的高浓度乳化废水处理工艺进行了介绍,并就常见的几种废水类型开展了中试试验,对比了去除效率(%)、化学需氧量(COD)、氨氮(NH3-N)、磷酸盐(以P计)、进料量(M)、单位耗能(Q)、压缩比ε等指标随MVR运行时间(T)的变化关系,结果表明:乳化液废水的单独处理效率较高(>99.5%)、耗能较低,且排放浓液更加均一稳定,但由于入口浓度高达100000mg/L以上,出水浓度也较高,需要加设后续处理设施。

This paper introduces the treatment of highly-concentrated emulsified wastewater in automobile industry based on the MVR technology,applies pilot scale tests on several kinds of wastewater. And comparisons are made on changes of parameters of removal efficiency（%）,chemical oxygen demand（COD）,ammonia（NH3-N）,phosphate（P）,feed rate（M）,unit energy consumption（Q）,and compression ratio（ε）in accordance with the running time（T）of MVR. The result shows that when it is treated individually,the treatment efficiency is higher（〉99.5%）,the energy consumption lower,and the emissions concentration more stable. However,since the inlet concentration is as high as over 100000 mg/L,the outlet concentration turns higher accordingly,and subsequent treatment facilities should be set.