水平潜流人工湿地处理住宅灰水技术研究

A Study of Residential Grey Water Treated by Subsurface Horizontal Constructed Wetland

以陶粒及天然沸石为基质,黄菖蒲为植物,构建新型水平潜流式人工湿地,研究其净化实际小区灰水的效果,进水流量50L/d,水力停留时间2d,进水COD、NH3-N、TN、TP浊度为164、4.3、5.2、0.44mg/L、82.4NTU时,出水可分别降至70、1.07、2.07、0.33mg/L、7.27NTU,去除率分别为57.32%、75.19%、60.26%、24.24%、91.18%,对实际灰水COD、NH3-N、TN、浊度有良好的去除效果。利用人工配水考察不同水力停留时间下湿地的去污效果。提高停留时间能有效提高湿地对COD、NH3-N的去除效果,停留时间为3d时,该湿地的去污效果最好,COD、NH3-N、TN、TP浊度去除率分别为68.46%、81.75%、66.67%、34%、86.91%。

Ceramsite and natural zeolite were used as mixed substrates in subsurface horizontal constructed wetland which is planted with Yellow flag to investigate the treatment efficiency of real residential grey water,Inflow rate was 50l/d,HRT was 2d.The wetland reduced COD,NH3-N,TN,TP and turbidity from 164mg/l,4.3mg/l,5.2mg/l,0.44mg/l,82.4NTU to 70mg/l,1.07mg/l,2.07 mg/l,0.33 mg/l,7.27NTU,removal efficiency was respectively 57.32%,75.19%,60.26%, 24.24%,91.18%,and have a good performance in COD,NH3-N,TN,turbidity treatment.Used synthetic grey water to study different HRT effect of wetland.Increasing HRT could be increase the wetland ability of COD,NH3-N removal.When the HRT was 3d,the wetland had the best decontamination effect.The removal efficiency of COD,NH3-N,TN,TP,turbidity was respectively 68.46%,81.75%,66.67%,34%,86.91%.