Nitrogen Removal and N2O Emission in Subsurface Vertical Flow Constructed Wetland Treating Swine Wastewater:Effect of Shunt Ratio
A comparison study of subsurface vertical flow constructed wetland (VSSF) treating swine wastewater at four different shunt ratios was carried out when the hydraulic loading rate (HLR) was 0.02 m3·(m2·d)-1.The results showed that, the shunt ratio had significantly influence on nitrogen removal of the VSSF, whereas it had no great influence on the removal of COD, BOD, TSS, and TP.As the shunt ratio was 1:2, VSSF had the best performance on treating swine wastewater, especially TN.The quantity of nitrogen transformation bacteda was influenced by the shunt ratio in the system, and the denitrifying bacterial quantity increased as the shunt ratio was increased, leading to enhance the nitrogen removal of VSSF.Besides, the N2O emission from VSSF was also affected significantly by the shunt ratio.The N2O emission fluxof VSSF was found to be lowest when the shuntratio was 1∶2.
swine wastewater subsurface vertical flow constructed wetland (VSSF) shunt ratio nitrogen removal N2O
Zhen Wang Chaoxiang Liu Jie Liao Lin Liu Yuhong Liu Xu Huang
Key Laboratory of Urban Environment and Health,Institute of Urban Environment,Chinese Academy of Sci Key Laboratory of Urban Environment and Health,Institute of Urban Environment,Chinese Academy of Sci College of Environmental Science and Engineering,Xiamen University of Technology,Xiamen 361005,China
国际会议
浙江嘉兴
英文
57-63
2013-10-24（万方平台首次上网日期，不代表论文的发表时间）