Author(s): Jinlong Zuo; Yu Qian; David Zhu
Linked Author(s): Yu Qian, David Z. Zhu
Keywords: Hydrogen sulfide Sewer networks Air pressure Sewer management Hazardous gas
Abstract: Hydrogen sulfide (H2S) in sewer systems poses significant challenges, including infrastructure corrosion, odor nuisances, and potential health hazards. This study addresses these issues through a comprehensive field investigation conducted in the sewer systems of Guyuan, Ningxia, China. Despite extensive research on H2S management, gaps remain in understanding the dynamic conditions influencing H2S dispersion in urban sewer networks. The research employed a detailed field monitoring campaign, deploying sensors to measure air pressure and H2S levels over 37 days in selected manholes. Air pressure within the sewer network is relatively stable, sites at network intersections experienced the most considerable negative pressure, suggesting potential gas migration. H2S concentrations exhibited clear spatial and temporal patterns, peaking during high sewage flow periods in the morning and evening. This study provides valuable insights for urban drainage management by highlighting the critical factors affecting H2S dynamics in sewer systems.
Year: 2025