Distribution of chemical fractions of Pb in wastewater in mixed substrates of constructed wetlands
In this study,the wastewater containing 10mg/L lead was treated by five different kinds of mixed substrates of constructed wetlands.The results indicated: (1) For total Pb,substrates 1,4 and 5 showed significantly higher capacity than other kinds;(2) In five fractions,bound to Fe-Mn oxides and residual Pb were treated with higher efficiency than other fractions;(3) There were significant changes between the content of total Pb and that of five fractions in substrate 5;(4) Bound to carbonates and residual Pb showed an upward trend,but exchangeable and bound to OM Pb showed upward trend firstly,and then showed downward trend.The bound to Fe-Mn oxdies fraction Pb showed downward trend.
Substrate Constructed wetland Lead Fraction
Ling Tao Zhengqiang Fu Jun Ren Yamei Gao
School of Environmental and Municipal EngineeringEngineering Research Center for Cold and Arid Regions Water Resource Comprehensive Utilization, Ministry of Education,Lanzhou Jiaotong University Lanzhou, China
国际会议
兰州
英文
1-4
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）