人工湿地系统对含沼液畜禽废水净化效果试验研究

为了考察人工湿地处理含沼液畜禽废水的可行性,采用水平潜流人工湿地对含沼液畜禽废水进行处理实验。试验结果表明：在进水流量1.5 m3.d-1,水平潜流人工湿地系统对含沼液畜禽废水具有较好的处理效果。废水中COD、TP、TN和NH4＋-N浊度平均去除率分别为59.21%、53.80%、55.09%和55.57%.另外,通过对人工湿地沿程的污染物变化试验分析表明,人工湿地系统对污染物的降解是沿人工湿地水流方向逐渐降低的。

Experimental study on purification efficiency of the constructed wetland system for livestock waste water with biogas slurry

In order to investigate the feasibility of treatment of livestock waste water with biogas slurry by the constructed wetland.Experiment study on purification efficiency of the constructed wetland system for livestock waste water with biogas slurry in this paper.The results showed that when the influent flux was 1.5 m3.d-1,the average removal rates of COD,TP,TN and NH4＋-N in the constructed wetland system were 59.21%,53.80%,55.09% and 55.57%.respectively.The wetland system has high treatment effect and run stably in the pretreatment process of livestock waste water with biogas slurry.According to the longitudinal variation of pollutants concentration in constructed wetland,it can be clearly observed that the pollutants removal efficiencies in the constructed wetland systems declined along the water flow direction,and most of the pollutants were removed in the front of the water flow direction.