文章基本信息

标题：CH4 generation simulation of drainage system in urban residential area
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作者：Jianfeng Zhang ; Jianfeng Zhang ; Lixiang Zhang 等
期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：227
期号：5
页码：052010
DOI：10.1088/1755-1315/227/5/052010
出版社：IOP Publishing
摘要：Based on the research of the dynamic simulation of CH₄ generation in the drainage system of residential area in Kunming, this paper initially explores the rules of CH₄ generation in domestic sewage. The experimental results show the hydraulic retention time (HRT) plays an important role in CH₄ generation. The shorter HRT is, the less CH₄ is generated, and the water flow leads to the reduction of CH₄. Pearson correlation analysis is conducted on the concentration of chemical oxygen demand (COD), total nitrogen (TN), sulphate, sulfide and that of CH₄ in wastewater. The result shows that the correlation between COD, COD/sulfate and the CH₄ concentration of each sampling port is significant at the level of 0.01. Dissolved oxygen (DO) in the sewage of the simulation system is less than 0.2 mg L^-1, that is, anaerobic condition is suitable for generating methane.