Dynamic Modeling of the Sulfur Cycle in Urban Sewage Pipelines Under High-Temperature and High-Salt Conditions

作     者：Zhao, Bingxuan Xu, Zhen Fu, Qionglin Zhao, Xiangai Huang, Jinguang Chen, Yufeng Lian, Faqin Zhou, Jingya 

作者机构：Department of Environmental Science College of Geography and Ocean Sciences Yanbian University Yanji133002 China College of Geography and Ocean Sciences Yanbian University Yanji133002 China Technology and Quality Department China MCC5 Group Co. Ltd. Chengdu610063 China College of Fisheries and Life Science Hainan Tropical Ocean University Sanya572022 China Key Laboratory of Biology and Genetic Resources of Tropical Crops Ministry of Agriculture Institute of Tropical Bioscience and Biotechnology Chinese Academy of Tropical Agricultural Sciences Haikou571101 China Center for Water and Ecology State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing100084 China 

出 版 物：《SSRN》 

年 卷 期：2024年

核心收录：

主　　题：Sewage 

摘      要：The corrosion of cement-based materials due to biological processes within the micro-ecological system of urban sewage pipeline networks poses a serious threat to their operation. Furthermore, saltwater is recognized as one of the most corrosive environmental agents. Hence, this study focuses on investigating the sewage dynamics within the anaerobic pipeline. Through observing characteristic changes of sewage within the system, we have optimized existing kinetic models to capture the sulfur cycling between the liquid phase, gas phase, and biofilm. The main objective is to address the unique environmental conditions of coastal cities and explore the dynamic interplay between various mathematical models representing biological reaction processes within the sewage pipeline network in this specific area. The findings indicate that under anaerobic conditions, high concentrations of sulfate in wastewater do not act as a limiting factor for sulfide oxidation reactions. On the contrary, when sulfate becomes part of the sulfur cycle process within the sewage pipeline, a certain concentration of sulfate in the wastewater actually enhances the sulfide oxidation reactions. This improved kinetic model enables us to predict the presence of sulfur under various conditions in tropical coastal cities, thereby providing insights into the extent of corrosion within sewage pipelines. © 2024, The Authors. All rights reserved.