氮气
污染物
人工湿地
厌氧氨氧化菌
反硝化
分流(医疗)
环境科学
氮气循环
环境工程
环境化学
化学
生态学
生物
反硝化细菌
污水处理
外科
医学
有机化学
作者
Zhen Wang,Menglu Huang,Ran Qi,Shisuo Fan,Yi Wang,Ting Fan
标识
DOI:10.1016/j.cej.2016.11.060
摘要
This study was conducted to explore nitrogen transformation and associated microbial characteristics in a modified single-stage tidal flow constructed wetland (TFCW) at five different shunt ratios. Shunt ratio significantly affected nitrogen removal during operation of the TFCW with adoption of a modified step-feeding mode. When the shunt ratio was 1:2, TFCW had the best pollutant removal performance and was particularly effective for total nitrogen (TN). The abundance of nitrogen transformation microorganisms was also affected by the shunt ratio of the system. Molecular biological analyses demonstrated that both denitrification and anammox were enhanced when the shunt ratio was greater than 0:1, resulting in the development of multiple and complete nitrogen removal pathways in the TFCW. These results show that the optimal shunt ratio of the modified single-stage TFCW for effective nitrogen removal was 1:2.
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