Water Quality Monitoring at a Yantai Industrial-Park WWTP

During the pandemic, hospital wastewater was complex — containing pathogens, viruses and chemical reagents with infection risk. Conventional methods could not monitor residual chlorine accurately and stably, risking incomplete disinfection and pollutant release.

Hospitals require continuous assurance that medical wastewater is properly treated before discharge; intermittent manual checks cannot guarantee round-the-clock compliance and safety.

Waste stockpiling and rainwash generate highly polluted leachate with complex composition; without proper treatment monitoring it easily causes secondary soil and groundwater contamination. The site lacked full-process real-time monitoring, creating environmental risk.