二段生物接触氧化法处理寒冷地区生活污水试验研究

Study on Treatment of Sewage with Two-stage Bio-contact Oxidation Process at Cold Areas

通过研究为北方地区在冬季低温条件下运行的污水处理厂提供技术支持，寻求经济高效的污水处理方法。采用二段生物接触氧化法在低温的条件下处理生活污水，确定最佳运行条件以及掌握污染物的去除情况。水温在8-12℃的条件下，当总的接触时间为8h左右时，COD、BOD，的去除率分别可达到88．63％，91．25％左右．实验证明二段生物接触氧化法在低温条件下处理城市生活污水效果稳定、容积负荷高、处理时间短、抗负荷冲击能力强、运行操作简单，在污水生物处理方面前景良好，特别适用北方地区的推广应用。

In this paper, the working conditions and the effect of trenting sewage with the two -stage bio -contact process were introduced. The result of test showed that under the water temperature of 8 - 12℃, the process to treat sewage has many superiorities involving steady impact, high cubage load, short disposal time, strong resist load pounding ability and simple manipulation. When the hydranlic reative time is 8h, the removal rate of COD and BOD5 can achieve 88.63% and 91.25% ,which shows that this process have a nice future in the aspect of biologic disposal and especially apply in northern area.