滴滤池-人工湿地组合工艺处理农村生活污水

采用滴滤池-人工湿地组合工艺处理农村生活污水,考察了其除污效果及两工艺对污染物去除的贡献率.中试结果表明,在稳定运行状态下,滴滤池对COD、氨氮、总氮和总磷去除的贡献率分别为74.5%、79.2%、33.8%、47.5%,人工湿地的则分别为25.5%、20.8%、66.2%、52.5%.滴滤池能有效完成对有机物的降解和硝化作用,人工湿地系统则能进一步去除氮、磷等污染物,两者结合可使污水中的各类污染物得到有效去除.

Combined Process of Trickling Filter and Constructed Wetland for Treatment of Rural Domestic Sewage

The combined process of trickling filter and constructed wetland was used to treat the rural domestic sewage, and the contaminant removal efficiency of the combined process and the contributing rates of each process for contaminant removal were investigated, The full-scale experimental data show that under the steady running state, the contributing rates for removal of COD, ammonia nitrogen, total nitrogen, total phosphorus are 74.5% , 79.2% , 33.8% and 47.5% respectively in the trickling filter, and 25.5% , 20, 8% , 66.2% and 52.5% respectively in the constructed wetland. The study indicates that the trickling filter can effectively complete the organic substance degradation and nitration, and the constructed wetland system can further remove the nutriments such as nitrogen and phosphorus, The combined process can effectively remove the contaminants in rural domestic sewage.