Advanced Purification of Effluent from Sewage Treatment Plant by Integrated Vertical-flow Constructed Wetland
Advanced Purification of Effluent from Sewage Treatment Plant by Integrated Vertical-flow Constructed Wetland
复制标题
DOI：
--
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Du Xu
中科院分区：
文献类型：
--
作者：
Du Xu
采用一体化垂直流人工湿地对污水处理厂二级出水进行深度净化，考察了其对污染物的去除效果。结果表明，在进水负荷为0.32m~3/(m2·d)、水力停留时间为3d的条件下，出水浊度、COD、NH4+-N、TN、TP的平均去除率分别为65.47%、46.87%、50.06%、52.88%、70.06%。出水COD、TN、TP均达到《城市污水处理厂污染物排放标准》(GB 18918-2002)的一级A标准。与其他研究相比，在相同的污染负荷、面积和湿地深度条件下，该人工湿地对N、P的去除效果更好。
The integrated vertical-flow constructed wetland was used for advanced purification of the secondary effluent from sewage treatment plant,and the removal efficiency of pollutants was investigated.The results show that under the conditions of influent load of 0.32 m3/(m2·d) and HRT of 3 d,the average removal rates of turbidity,COD,NH+4-N,TN and TP are 65.47%,46.87%,50.06%,52.88% and 70.06% respectively.The effluent COD,TN and TP meet the first level A criteria specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB 18918-2002),and NH+4-N meets the first level B criteria.Compared with other researches,this constructed wetland has better removal efficiency of N and P under the same conditions of pollution load,area and wetland depth.