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

Abstract

A photocatalyst based on Ti3C2/ZnCo2O4/ZnIn2S4 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 of the photocatalytic coupled ozone flow reactor for three types of chlorophenol organic compounds is experimentally verified 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 flow reactor has a high degradation effect on chlorophenol organic compounds. The monitoring and treatment system for persistent organic pollutants in the water environment has significantly reduced the concentration of heavy metal ions and achieved good removal effects on COD and suspended solids. This study provides effective 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.