Monitoring and Management Techniques for Persistent Organic Pollutants in Groundwater Environment of Subway Stations

A photocatalyst based on Ti3C2/ZnCo2O4/ZnIn2S4 3 C 2 / ZnCo 2 O 4 / ZnIn 2 S 4 composite material is prepared for the detection and treatment of persistent organic pollutants in groundwater environment of subway stations. And it is characterized by scanning electron microscopy and energy dispersive X-ray spectroscopy. Then, a monitoring and governance system for persistent organic pollutants in the water environment is established, including sensor networks, data collection and processing, pollutant monitoring, and governance control. Finally, the degradation efficiency ffi ciency of the photocatalytic coupled ozone fl ow reactor for three types of chlorophenol organic compounds is experimentally verified fi ed to reach 93%, % , 86%, % , and 83%, % , respectively. The monitoring and treatment system for persistent organic pollutants in the water environment has achieved a removal rate of 90% % for chemical oxygen demand (COD) and 80% % for suspended solids. This study shows that the photocatalytic coupled ozone fl ow reactor has a high degradation effect ff ect on chlorophenol organic compounds. The monitoring and treatment system for persistent organic pollutants in the water environment has significantly fi cantly reduced the concentration of heavy metal ions and achieved good removal effects ff ects on COD and suspended solids. This study provides effective ff ective technologies and methods for the monitoring and management of persistent organic pollutants in the water environment, which helps to solve water pollution problems, improve water environment quality, and protect water resources and ecological environment.