厌氧池-集水池-阶梯跌水充氧曝气塔-人工湿地处理农村生活污水研究

Study on Rural Domestic Sewage Treatment with Combined Process of Anaerobic Pool,Collecting Tank,Stepwise Drop Aeration Tower and Artificial Wetland

采用厌氧池-集水池-阶梯跌水充氧曝气塔-人工湿地组合工艺处理农村生活污水,考察了工艺的运行效果及各处理单元对去除污染物的贡献率。实验结果表明,该组合工艺对污染物具有较好的去除效果,且处理效果稳定,其对化学需氧量(COD)、氨氮(NH4+-N)、总磷(TP)、悬浮物(SS)的平均去除率分别为87.90%、90.70%、93.69%、91.23%。阶梯跌水充氧曝气塔对COD、NH4+-N、TP的去除贡献率较大。将阶梯跌水充氧曝气塔与厌氧池、集水池、人工湿地相结合可以发挥组合的优势,并提高出水水质和系统运行的稳定性。

The combined process of anaerobic pool,collecting tank,stepwise drop aeration tower,artificial wetland was used to treat rural domestic sewage.The operation effect of the process and the contribution rate of each treatment unit to pollutant removal were investigated.The experimental results showed that the combined process has a good removal effect on pollutants,and the treatment effect is stable.The average removal rates of COD,NH 4+-N,TP and SS are 87.9%,90.7%,93.69%and 91.23%,respectively.The stepwise drop aeration tower contributes greatly to the removal rate of COD,NH 4+-N,TP.The combination of anaerobic treatment,stepwise drop aeration tower,collecting tank,artificial wetland process can play the advantages of combination and improve the emuent quality and the stability of the system.