Effectiveness of Constructed Wetland Plants in Filtering Pollutants
There are many case studies of vertical flow constructed wetlands. However, issues of effectiveness of the vertical flow constructed wetland plants in filtering pollutants needs to be addressed. In the current experiment, three plant species are discussed. The results show that among the three chosen plant species, Juncus effuses was more effective in removing pollutants than Canna generalis and Typha angustifolia. The accumulation of organic matter in the root system of Juncus effuses was up to 3.264mg/g. During the course of the experiment, the nitrifying in the constructed wetlands was intense. Ammonia nitrogen was transformed into nitrate nitrogen, which led to the increase in nitrate nitrogen. The transferring of ammonia nitrogen and nitrate nitrogen in multi-media system consisted of wastewater, substrate and plant roots. Nitrifying and denitrifying in the system coexisted, and Ammonia nitrogen and nitrate nitrogen transferred from one to the other.
Yu-ling Huang Yu-ling Huang Hsiang-te Kung
Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Educati Department of Earth Sciences University of Memphis TV, USA
国际会议
成都
英文
1-5
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）