将：排水管网是城市关键的基础设施在社会的运作和发展中发挥着重要作用作为污水处理过程的第一线城市下水道系统每天输送大量的污水。下水道中的污水含有大量有机物管道内部沉积物中的厌氧环境及微生物群落的能量代谢为这些污染物的转化提供了合适的条件因此下水道中会产生大量的温室气体如甲烷和二氧化碳。因此排水管网已被公认为城市系统中最大的能源消耗者和温室气体排放者之一。同时排水管网在长期运行过程中会产生一些破损情况

The drainage network is a crucial infrastructure in cities and plays an important role in the operation and development of society. As the front line of sewage treatment, urban sewer systems transport large amounts of wastewater every day. The sewage in the sewer contains a large amount of organic matter, and the anaerobic environment and microbial community metabolism in the sediment inside the pipeline provide suitable conditions for the transformation of these pollutants, leading to the production of a large amount of greenhouse gases, such as methane and carbon dioxide. Therefore, the drainage network has been recognized as one of the largest energy consumers and greenhouse gas emitters in urban systems. At the same time, during the long-term operation of the drainage network, some damage may occur, leading to the entry of some groundwater and rainwater into the sewage pipeline