Water Purification of High-salinity River by Floating Bed Grown Aquatic Plants
Nowadays, water pollution and eutrophication problem of rivers and lakes are widely and serious in China. Floating bed grown aquatic plants was applied to remove nutrient pollutants from the high-salinity river water. The experimental results showed that reed, Lythrum salicaria Linn and Alternanthera philoxeroides were the suitable species in this project. SD value in the river test section was significantly improved by floating beds, while TN, NH4+-N, TP concentration declined by a certain degree. Removal of TN and NH4+-N improved significantly, for their concentration decreased by 38.9% and 33.2%, respectively. Microorganism quantity in the reed rhizosphere was detected periodically, such as heterotrophic bacteria, nitrite bacteria, denitrifying bacteria, and so on. Meanwhile, correlation of the microbe and nutrient removal efficiency was studied. There was significant positive correlation between the number of nitrite bacteria and NH4+-N removal rate. The pilot test results provide some useful information for ecosystem restoration of high-salinity river.
Shuying He Jixiang Li Yatong Xu Erkun Hu Haizhen Yang
College of Environmental Science and Engineering Tongji University Shanghai, China Shanghai Key Laboratory of Urbanization and Ecological Restoration East China Normal University Shan Department of Tourism Cooking Henan Polytechnic ZhengZhou, Henan, China
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）