WANG Jian,LIU Guo-hua,QI Lu,et al.Research Progress in Material Transformation between Sediment and Sewage in Urban Drainage Pipeline[J].China Water & Wastewater,2021,37(24 24):34-44.
Research Progress in Material Transformation between Sediment and Sewage in Urban Drainage Pipeline
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
24 24
Page:
34-44
Column:
Date of publication:
2021-12-17
- Keywords:
- drainage pipes; sediments; sewage; microorganisms; material conversion
- Abstract:
- Urban drainage pipe network plays a very important role in urban sewage collection and transport. Due to the influence of hydraulic conditions and rainfall erosion, sediments are easy to deposit at the bottom of the drainage pipeline. And sewage and sediments are rich in nutrients and host a large number of microorganisms, which is prone to inducing complex physical and biological reactions, thus cause material transfer and conversion between the sediment layer and sewage. Physical deposition, biological transformation adsorption and biological transformation release of pollutant are three main kinds of transfer and conversion ways, which result in many harms such as pipeline silting and blocking, the release of toxic and harmful gases, pipeline corrosion, carbon source loss, etc. This paper summarized the production law and composition characteristics of sediments in urban drainage pipelines, as well as the material transfer and conversion law, effect factors, mechanism, and harms. Finally, the research related to the transfer and conversion between the sediment layer and the sewage of drainage pipeline in China was suggested.
Last Update:
2021-12-17