微电解耦合生物增浓工艺处理制药废水工程

Pharmaceutical Wastewater Treatment by Micro-Electrolysis Coupled with Biological Magnification

研究了微电解耦合生物增浓工艺在制药废水处理工程中的应用,工程处理流量28 m^3/h。对于高含量制药废水,在优化微电解反应条件下,COD去除率平均在39.1%。微电解后的制药废水再与低含量废水混合进入水解酸化,去除约30%的COD。水解酸化出水进入生物增浓池,生物增浓池内的污泥质量浓度达10~15 g/L以上,最终出水稳定,COD<300 mg/L,NH_3-N的质量浓度<35 mg/L,满足GB 8978-1996的三级排放标准。

Pharmaceutical wastewater treatment by micro-electrolysis combined with biological magnification process was researched, the engineering processing flow was 28 m3/h. The average COD removal rate of high concentration pharmaceutical wastewater could reach 39.1% by micro-electrolysis.After micro-electrolysis pretreatment, the pharmaceutical wastewater flew into the balance tank and mixed with dilute wastewater. Then the mixture went into hydrolysis tank, which COD removal rate achieved 30%. Next, the wastewater was treated in biological magnification tanks and the mass concentration of MLSS reached over 8~10 g/L. The COD and mass concentration of NH_3-N of final effluent were below 300 mg/L and 35 mg/L, respectively, which met the third level emission standard GB 8978-1996.