摘要： 选用钢渣、砾石等填料及水生植物构建两座人工湿地进行对比试验，考察秋冬季潜流人工湿地系统采用芦苇保温法的运行效果，结果发现其出水效果好于无保温床体，保温床体对COD、TN、TP的去除率分别为20.74%、19.36%、42%。为了应对由于温度的降低导致反硝化细菌活性受到抑制的情况，采用强化反硝化的方法向湿地中投加适宜碳氮比的甲醇，结果表明：当碳氮比为1.85时，出水TN平均质量浓度为13.66 mg/L，达到了《城市污水再生利用 景观环境用水水质》（GB/T 18921-2002）标准（TN≤15 mg/L）。

关键词: 潜流人工湿地, 冬季, 床体保温, 甲醇

Abstract: Fillings,such as steel slag,gravel,etc.,as well as aquatic plants,have been used for doing comparative trials on the construction of two artificial wetlands. The operation results of using reed for heat insulation in undercurrent & artificial wetlands in autumn and winter are investigated. It is found that the effluent result is better than that of the one which does not have heat insulation bed. The removing rates of COD,TN and TP are 20.74%,19.36% and 42%,respectively. In order to deal with the situation where the inhibition of the activity of denitrification bacteria is caused by the decrease of temperature,reinforced denitirification method is used for adding methanol with appropriate carbon/nitrogen ratio to wetlands. When the resulted carbon/nitrogen ratio is 1.85,the average TN concentration of effluent is 13.66 mg/L. The Standard of the Water Quality of Recycled Urban Sewage and Water for Scenic Environment Use (GB/T 18921-2002) can thus be reached (TN≤15 mg/L).

Key words: undercurrent constructed wetlands, winter, beds for heat insulation, methanol

中图分类号: 

• X703