A Study of Residential Grey Water Treated by Subsurface Horizontal Constructed Wetland |
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| Authors: | Tang Shimin Qin Qingdong Qian Yuandi Wang Xiaoping and Lei Tuanjie |
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| Institution: | Maanshan MCC17 Engineering Science & Technology Co.,Ltd, Maanshan 243000;Department of Municipal Engineering,Southeast University, Nanjing 210096;Maanshan MCC17 Engineering Science & Technology Co.,Ltd, Maanshan 243000;Maanshan MCC17 Engineering Science & Technology Co.,Ltd, Maanshan 243000;Maanshan MCC17 Engineering Science & Technology Co.,Ltd, Maanshan 243000 |
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| Abstract: | 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 70 mg/l, 1.07 mg/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%. |
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