人工湿地处理污水处理厂尾水中试研究  

Research on the Pilot Scale Experiment of Tail Water from a Wastewater Treatment Plant Treated by Constructed Wetlands

作　　者：高翔[1] 黄津辉[1] 张忠广[1] 周绪申[2] 

机构地区：[1]天津大学水利工程仿真与安全国家重点试验室,天津300072 [2]水利部海河水利委员会水资源保护局,天津300170

出　　处：《南水北调与水利科技》2014年第1期54-58,共5页South-to-North Water Transfers and Water Science & Technology

基　　金：教育部新世纪优秀人才支持计划(NCET-09-0586);水利部公益性行业科研专项经费项目(201201114);国家国际科技合作专项(S2013BGR0244)

摘　　要：天津市某污水处理厂出水中仍含有大量N、P以及难降解的大分子物质等污染物,计划采用潜流人工湿地系统对污水厂出水进行深度处理,使其达到城市景观用水的标准。利用中试试验模拟潜流人工湿地系统对出水中主要污染物的去除效率,发现:接种微生物的湿地系统对尾水中的悬浮物有较高的去除效率,约为84.7%;悬浮物的去除与基质的吸附和物理沉淀作用有很大关系;接种微生物的湿地系统对尾水中的COD有较好的去除效率,达到44.8%,并且功能微生物的添加提高了对COD的去除能力;接种微生物的湿地系统对氨氮与总氮的去除效率均不理想,分别为12.3%和35.5%;溶解氧的增加有助于氨氮和总氮的去除;接种微生物的湿地系统对总磷的去除率为52.3%,主要依靠基质的吸附和物理沉淀作用。The water from a wastewater treatment plant in Tianjin still contains a large number of N and P as well as macromole- cules which are hard to be degraded. The constructed wetland system is used to perform advanced treatment on the water from the wastewater treatment plant so that it can meet the standard of urban landscape water use. A pilot experiment is used to sim- ulate the removal efficiency of the constructed wetland system on different kinds of pollutants. The results showed that （1） the wetland system of the inoculated microorganisms has a high removal efficiency of 84. 7% on the suspended solids of tail water; （2） removal of suspended solids has a great correlation to matrix adsorption and physical precipitation; （3） the wetland system of the inoculated microorganisms has a good removal efficiency of 44. 8% on COD of tail water, and the addition of functional microbes can improve the removal ability on COD; （4） the wetland system of the inoculated microorganisms does not have a good removal efficiency on ammonia nitrogen and total nitrogen, which is about 12. 3 % and 35.5 % respectively; （5） the addition of dissolved oxygen can contribute to the removal of ammonia nitrogen and total nitrogen; and （6） the wetland system of the in- oculated microorganisms has a removal efficiency of 52. 3% on total phosphorus, main relying on the matrix adsorption and physical precipitation.

关 键 词：人工湿地 降解 基质 砾石 煤渣 功能微生物 

分 类 号：X703[环境科学与工程—环境工程]