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 (600Kb)
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| Yuhei INAMORI | |
| Head, International Water Environment Renovation Research | |
| Team | |
| Division of Regional Environment | |
| National Institute for Environmental Studies, | |
| 16-2 Onogawa, Tsukuba, Ibaraki, 305-0053, Japan | |
| Tel: +81-2.98-50-2400 Fax: +81-298-50-2570 | |
| E-mail: inamori@nies.go.jp |
5,114,000 Yen
(FY 1999: 2,609,000 Yen)
Constructed wetland is an important eco-engineering countermeasure against water pollution for China because of its low cost, energy and maintenance requirement. But it has been increasingly recognized as a source of CH4 and N2O emissions.
In this study, the possible resource and reason of CH4 and N2O emissions was analysis on the basis of literature review and a comprehensive research framework to improve existing wetlands or develop new technique was proposed. As the key step for research implement, the design of wetland is also discussed here.
At the same time, a field experiment was carried out and the seasonal change of CH4 and N2O emissions was also investigated in this study.
Results from field experiment showed the removal efficiency of pollutants and CH4 and N2O emissions had closed relationship with season change. The removed BOD5 for a certain wetland has some definite relationship with CH4 and N2O emissions in constructed wetland and it could be used to forecast CH4 and N2O emissions in some occasions.
Constructed wetland, CH4 and N2O emissions, Design, Greenhouse gases