Hospital wastewater is characterized by high complexity and is typically discharged into urban sewer systems or natural environments. Improper treatment or direct discharge of untreated medical wastewater can lead to severe adverse consequences, posing substantial threats to human health and ecological integrity. Thus, ensuring compliance of medical wastewater with all regulatory standards prior to discharge is of paramount importance.

Hospitals are classified into diverse types, with their wastewater primarily categorized into two major streams: that from general hospitals and that from infectious disease hospitals. Key pollutants in medical wastewater include pathogens (e.g., bacteria, viruses), heavy metals, disinfectants (residual chlorine being the most prevalent), and radioactive substances. Notably, medical wastewater exhibits properties such as spatial transmission potential and latent infectivity. In the absence of effective treatment measures implemented by hospital authorities, it may become a critical vector for disease dissemination and a source of severe environmental contamination. Owing to the unique operational nature of hospitals, Medical Wastewater Monitoring demands heightened attention.

Hangzhou Modi has independently developed a suite of water quality monitoring equipment, enabling the continuous monitoring of multiple parameters in wastewater and sewage. This includes two indicators prioritized by regulatory bodies during the COVID-19 pandemic: coliform bacteria and total residual chlorine. In China, the number of manufacturers producing Online Coliform Analyzers is limited, and Hangzhou Modi is among this select group. Furthermore, the equipment supports 24/7 fully automated real-time monitoring of medical wastewater, which not only ensures the safety of discharged effluent but also enhances the operational efficiency of staff and the management level of water environment monitoring.

While coliform bacteria represent a core monitoring target for hospital wastewater discharge, the monitoring of other parameters should not be neglected. Non-compliance with any single parameter renders the wastewater non-“safe.” Specifically, during the pandemic, the surge in hospital foot traffic and the emergence of a highly contagious, human-harmful virus necessitated targeted responses. The standard protocols employed in the pre-pandemic era were no longer adequate; instead, context-specific and tailored solutions were required.