中文摘要：

构建潜流人工湿地．塘组合中试系统，探讨系统对村镇严重污染河水中氮磷等污染物的处理效果。采用实验模拟的方法，获得不同水力停留时间HRT及不同塘水深条件下系统对氮磷净化效果的数据，并进行分析。结果表明，组合系统HRT对COD、TN、NH3-N的影响显著，随HRT的增大去除效果明显提高。对TP的影响呈现先提高后降低且总体变化不大的现象，除磷的最佳区间是HRT2．5～3．0d。当HRT〉2．1d，COD、TN、NH3-N和TP的去除率大于54．0％、57．8％、67．7％和80．6％，出水COD优于Ⅳ类水体标准，TN、NH3-N均优于城镇污水处理厂污染物排放标准一级A标准，TP优于Ⅲ类水体标准。COD、TN、N地-N和TP的去除率随塘水深变化不犬，均出现一个先高后低的现象，当塘水深为0．5m时，去除率最高，COD、TN、NH3-N和TP的去除率分别达到48．9％、55．3％、63．7％和83．9％，出水水质最好，分别为20．49、9．51、4．59、0．19mg／L，COD优于Ⅳ类水体标准，TN、NH3-N优于一级A标准，TP优于Ⅲ类水体标准。

英文摘要：

Pilot-scale subsurface constructed wetlands-ponds composite system was constructed to explore the effect on treatment of heavily polluted villages river water with nitrogen and phosphor. By means of experimental simulation, the purification effect date with different hydraulic retention time （HRT） and different depth of ponds were obtained and analyzed. The results show that HRT of the composite system has significant influence on removal effect of COD, TN and NH3-N. The removal effects increase with the HRT increases. However, removal rate of the TP increases first and decreases then with the HRT increases. The whole effect to the TP has not significant change. And the optimized scope for the TP removal is HRT 2.5-3.0 d. When HRT〉2.1 d, removal rate of the COD, TN, NH3-N and TP are larger than 54.0%,57.8%,67.7% and 80.6% respectively. The COD in effluent quality is superior to case-IV water standards, the TN and NH3-N are superior to the first class A criteria specified in GB 18918--2002, and the TP is superior to the case-Ⅲ water standards. Removal rates of the COD, TN, NH3-N and TP have a little change with increase of water depth, which increase first and decrease then. When the depth of water ponds is 0.5 m, the removal rate is the maximum, and the COD, TN, NH3-N and TP removal rates are 48.9%, 55.3%, 63.7% and 83.9% respectively, the effluent quality is the best and are 20.49, 9.51, 4.59 and 0.19 mg/L respectively. Effluent quality of COD is superior to the case-IV water standards, the TN and NH3-N are superior to the first A criteria, and the TP is superior to the case-Ⅲ water standards.