期刊
DESALINATION AND WATER TREATMENT
卷 53, 期 3, 页码 593-602出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/19443994.2013.848673
关键词
Pollutant removal; Saline sewage; Salt-tolerant plant; Enzyme activity; Constructed wetland
资金
- Natural Science Foundation of China [50908214, 30970105, 51078131]
- Scientific and Technological Project of Zhejiang Province in China [2009C33028]
A series of investigations was conducted to treat saline domestic sewage using constructed wetlands. Twelve emergent plant species were planted in experimental units and fed with saline domestic sewage. All species were classified into three clusters using cluster analysis based on the average values of relative growth rate, nutrient uptake, root biomass and activity. The species of Cluster I, including Canna indica, Phragmites australis and Scirpus validus, had strong potential for the purification. The above plants were employed again to treat saline domestic sewage under different influent salinities concentrations. For the influent salinity of 0.5, 1.0 and 1.5%, average treatment performances of planted units were found to be 61.5-70.5% for COD, 59.3-68.4% for [GRAPHICS] -N, 61.9-70.4% for TN and 40.4-47.3% for TP. With increasing influent salinity to 2.0%, the removal efficiencies were dropped significantly. It was similar to the change of the soil enzyme activity in the experiment units. Activities of urease and cellulase declined significantly when influent salinity increased to 2.0%. The lower soil enzyme activity in the treatments receiving wastewater at 2.0% indicated that saline domestic sewage had an adverse effect on microbial activities.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据