反硝化碳源在人工湿地脱氮中的应用及其研究进展

The application and research progress of denitrifying carbon source in constructed wetlands for nitrogen removal

碳源供给是制约人工湿地反硝化脱氮的重要因素,系统论述了反硝化碳源的类型及其在人工湿地反硝化过程中的作用,并对人工湿地中反硝化碳源的应用现状进行了讨论。反硝化菌与人工湿地脱氮有着密切关联,是人工湿地领域研究的焦点。此外,人工湿地中的环境条件、运行条件及湿地构建条件等都会对其反硝化效果产生重要影响,指出了通过改善上述条件提高人工湿地脱氮效率的途径。最后,针对目前该研究领域中存在的主要问题进行了归纳,并对今后需要开展的研究工作进行了展望。

The supplement of carbon source is the main factor influencing denitrification in constructed wetland.The types of denitrifying carbon source as well as its functions in denitrifying process were discussed.In addition,the present application of denitrifying carbon source in constructed wetland was reviewed.Denitrifying bacteria which closely associated with nitrogen removal was the focus in the fields of constructed wetland research.Furthermore,environment conditions,operating conditions and the wetland designs also had great effect on denitrification efficiency.Some methods for increasing denitrification efficiency of constructed wetland through improving these conditions were introduced.At last,the main questions existing in current study were concluded and the prospects on future studies ere given in this paper.