摘要
排水管道中产生的硫化氢(H2S)和甲烷(CH4)给管网带来恶臭、腐蚀及爆炸问题,此类有害气体的产生严重影响排水系统的安全运行。文章重点分析了城市排水管道内H2S和CH4产生及风险控制,在此基础上分析了农村排水管道内有害气体的分布特征,并分析相关的风险控制措施,提出控制H2S和CH4生成的主要措施是改变排水管道运行的水力条件和调节污水水质特征;对于农村地区而言,结合地形地貌来调整管道水力条件及优化管网设计更经济有效。
Hydrogen sulfide and methane generated in sewers cause odor,corrosion and explosion problems to the pipes.These harmful gas seriously affect the safe operation of the sewer systems.This paper focuses on the generation and risk control of the H2S and CH4 in the urban sewers,and analyzes the distribution characteristics of harmful gas in the rural sewers.Some corresponding risk control measures are also analyzed.The main measures to control the generation of H2S and CH4 are changing the hydraulic conditions of pipes and adjusting the water quality characteristics of the sewage.As for the rural regions,it is more economical and effective to adjust sewer hydraulic conditions and optimize the sewer design by considering the topography.
作者
周良洁
郑天龙
刘俊新
ZHOU Liangjie;ZHENG Tianlong;LIU Junxin(Department of Water Pollution Control Technology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《环境保护科学》
CAS
2020年第5期124-132,共9页
Environmental Protection Science
基金
国家自然科学基金重点资助项目(51838013)
国家自然科学青年基金资助项目(51808536)
国家重点研发计划项目(2016YFC0400804)。
