Effect of plant harvesting on greenhouse gas emission from vertical subsurface flow constructed wetlands treating low-strength sewage

被引:0
|
作者
Nutanong, Siripoon [1 ,2 ]
Chiemchaisri, Chart [3 ]
Chiemchaisri, Wilai [3 ]
Kantawanichkul, Suwasa [4 ]
机构
[1] Chulalongkorn Univ, Natl Ctr Excellence Environm & Hazardous Waste Ma, Bangkok 10330, Thailand
[2] Chulalongkorn Univ, Postgrad Programs Environm Management, Bangkok 10330, Thailand
[3] Kasetsart Univ, Fac Engn, Dept Environm Engn, Bangkok 10900, Thailand
[4] Chiang Mai Univ, Fac Engn, Dept Environm Engn, Chiangmai 50200, Thailand
关键词
Constructed wetlands; Cyperus alternifolius; Domestic sewage; Greenhouse gas emission; Plant harvesting; WASTE-WATER TREATMENT; NITROUS-OXIDE; NITRIFIER DENITRIFICATION; BACTERIAL COMMUNITIES; MICROBIAL ADAPTATION; REMOVAL; NITRIFICATION; PERFORMANCE; MACROPHYTES; SYSTEMS;
D O I
10.5004/dwt.2018.22822
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The effect of plant harvesting patterns on CH4 and N2O fluxes from vertical flow constructed wetlands was investigated. Four identical constructed wetland units planted with Cyperus alternifolius were operated continuously for a period of 8 months during which plant harvesting periods were varied between 2, 4 and 8 months intervals. During the operation, CH4 and N2O fluxes were ranged between 1.73 and 3.63 mg C/m(2) h and between 0.049 and 0.157 mg N/m(2) H, respectively. Lowest CH4 fluxes were detected in the unit without harvesting during 8 months period whereas N2O fluxes were found lowest in the most frequent harvesting pattern (every 2 months). Analyses of dissolved oxygen and microbial community revealed different level of oxygen availability and greenhouse gas producing microbial population in the root zone between the treatment units.
引用
收藏
页码:297 / 308
页数:12
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