农村生活污水生物生态处理试验研究

Study on Treatment of Rural Domestic Sewage with Bio-ecological Processing System

采用连续梯流结构形式的生物生态处理系统处理农村生活污水,考察其对原水CODCr、氨氮、TN、TP和浊度的去除效果。结果表明,生物生态处理系统对农村生活污水中CODCr、氨氮、TN、TP及浊度的平均去除率分别为88%、91%、76%、80%和96%。系统对CODCr、氨氮、TN、浊度净化能力较好,出水均可达到GB 18918-2002 I级A标准;但对TP净化能力有限,不能实现高等级出水排放,出水仅达到I级B出水标准。

To investigate removal efficiency of CODCr, ammonia and turbidity in rural domestic water and changes of biological phase, a bio-ecological processing system was used to treat rural domestic sewage. It was showed that the average removal rates of CODCr, ammonia nitrogen, TN, TP and turbidity were 88 %, 91 %, 76 %, 80 % and 96 %, respectively. Purification ability of CODCr, ammonia nitrogen, TN and turbidity in bio-ecological processing system is better than that of TP. The result showed that concentration of CODCr, ammonia nitrogen, TN and turbidity in effluent water could reach the standard of GB 18918-2002 grade I A, while concentration of TP reach grade I B.