Reversing Clogging in Vertical-flow Constructed Wetlands by Backwashing Treatment

摘要：

More and more constructed wetland CW) were used to treat waste water in the world for its advantage on cheaper and efficiency. CW would clog for improper design or imperfect management, so application for it was limited. The purpose of this paper is that using backwashing method resolve filter media clogging problem which is an intractable matter in constructed wetlands project. The effects of the backwashing treatment on pollutant removal, as well as the influence on characteristics of hydraulics of wetlands, were studied. The experimental results indicate that CW hydraulic conductivity, hydraulic resistance time and removal rate of COD increased after backwashing. This paper confirmed that backwashing method can reverse clogging in verticalflow constructed wetlands, and provided design guidance for applying backwashing method to treat clogging vertical-flow constructed wetlands.

关键词： Vertical-flow constructed Wetland Clogging Backwashing Characteristics of hydraulics

作者: Ma Fei Jiang Li Zeng Ting

作者单位: School of Chemistry and Environment Engineering,Jiangsu Teachers University of Technology,Changzhou, School of Chemistry and Environment Engineering,Jiangsu Teachers University of Technology,Changzhou,

会议类型: 国际会议

会议名称: 2010 International Conference on Material and Manufacturing Technology(2010材料与制造技术国际会议 ICMMT2010)

会议地点: 重庆

会议语种:英文

页码: 1064-1068

在线出版日期: 2010-09-17（万方平台首次上网日期，不代表论文的发表时间）