水解酸化-A2/O-MBR-BAC组合工艺处理焦化废水试验研究

为解决焦化行业废水处理不达标的问题,试验研究了水解酸化-A2/O-膜生物反应器（MBR）-活性炭过滤（BAC）的组合工艺处理焦化废水的可行性。结果表明,进水NH3-N的质量浓度为88 mg/L左右时,出水NH3-N的质量浓度稳定在3 mg/L左右,组合工艺对NH3-N的去除率能达到96%。同时,进水CODCr的质量浓度在970mg/L左右,出水CODCr去除率能达到90%,出水满足GB 8978—1996《污水综合排放标准》一级标准,该工艺对焦化废水有很好的处理效果。

Experimental research on coking wastewater treatment by hydrolysis acidification-A2/O-MBR-BAC combined process

In order to solve the problem that the quality of the effluent water from coking wastewater treatment process can＇t meet the discharge standard, the feasibility of hydrolysis acidification-A2/O-MBR-BAC combined process treating coking wastewater was studied through the test. The results showed that, when the mass concentration of NH3-N in the influent water was about 88 mg/L, the mass concentration of NH3-N in the effluent water kept a stable value of 3 mg/L, and the removal rate of NH3-N reached 96%. Meanwhile, when the influent COD~ mass concentration was about 970 mg/L, the removal rate of CODc~ could reach 90%, the effluent water quality met the specification for grade 1 in GB 8978--1996 Integrated Wastewater Discharge Standard. It could be seen that, using the said technology to treat coking wastewater could get a satisfying effect.