5种农村生活污水处理工艺运行效果

目的]筛选农村生活污水处理最佳工艺。方法]运用MBR、SBR、海沃特复合生物水、脉冲多层复合滤料生物滤池、DSP-SH(A2/O)5种常见的农村生活污水处理工艺对江苏省太湖流域地区进行1 a的连续监测,比较分析不同工艺对生活污水中COD、TP、TN和氨氮的处理效果。结果]5种农村生活污水处理工艺均可明显降低生活污水中的COD、TP、TN和氨氮浓度,出水水质达到一级B标准,其中脉冲多层复合滤料生物滤池对污染物的去除效果最佳,可以获得64%以上的COD去除率及90%以上的氨氮去除率,运行最为稳定。结论]为农村生活污水处理提供了科学依据与借鉴。

Purifying Effect of Five Kinds of Rural Sewage Treatment Technologies

Objective] To screen the optimal technology of rural domestic sewage treatment.Method] Five common rural domestic sewage treatment techniques were adopted, which were MBR, SBR, HyWaT composite biological water, pulse multilayer composite filter material biolog-ical filter, and DSP-SH(A2/O).Continuous monitoring for one year was carried out in Taihu Lake watershed.The treatment effects of different technologies on COD, TP, TN and ammonia nitrogen in domestic sewage were analyzed and compared . Result] Five common rural domestic sewage treatment techniques could all significantly reduced the COD , TP, TN and ammonia nitrogen concentrations in domestic sewage , which reached the B standard of level 1 of effluent quality.Among them, pulse multilayer composite filter material biological filter had the optimal re-moval efficiency to pollutant, which could obtain more than 64% COD removal rate and 90% ammonia nitrogen removal rate.Its operation was the most stable.Conclusion] This research provides scientific basis and reference for the rural domestic sewage treatment.