微电解-活性污泥法去除污水中COD的试验研究

Research on enhanced active sludge process by micro-electrolysis method removal of COD in wastewater

为解决城市污水处理厂进水COD值超过了原有的设计负荷,影响活性污泥系统正常运行的问题,本文研究了微电解强化活性污泥技术去除模拟生活污水中COD的效果.试验结果表明:COD平均去除率为92.4%,尤其在进水COD较高时,微电解强化效果更明显.此外还讨论了进水的COD、氨氮、无机磷负荷对系统去除COD的影响.结果表明:COD、氨氮负荷增加时,COD去除率增大;无机磷负荷增加时,COD去除率不变.通过实际生活污水的试验,证明了微电解-活性污泥法可用于实际污水的处理.

ecause the influence of COD largely exceeds the original design load in the present sewage treatment plants, it seriously affects normal circulation of the active sludge process. This article studied active sludge technology enhanced by micro-electrolysis method removal COD in the simulated sewage. The experiment results showed that the COD average removal rate was 92.4%, especially the treatment effect of the active sludge process enhanced by the micro-electrolysis method was more obvious in the influence of high COlD concentration. In addition, the influences of COlD removal on the influent concentrations of COD, NH4 ＋ -N, phosphorous were discussed. The result indicated： when the COD, NH4＋ -N concentra- tions increased, the COD elimination rate also increased. When the phosphorous concentra- tion increased, the COD elimination rate decreased. The active sludge process enhanced by micro-electrolysis method can be used for the actual sewage treatment by the experiment dealing with actual sewage.