Medical wastewater refers to the effluent discharged by hospitals into natural environments or urban sewer systems. In addition to domestic sewage, it contains chemical substances, pathogens, and radioactive wastewater—all of which must undergo disinfection and sterilization prior to monitoring. Only when all indicators meet regulatory standards can the wastewater be discharged safely. This article explores the key parameters for Monitoring Hospital Medical Wastewater.

Pathogens, particularly bacteria and infectious agents, are critical concerns in medical wastewater pollution. For example, the ongoing COVID-19 pandemic highlights the risks of highly contagious viruses: untreated presence of such pathogens in water can lead to transmission upon human exposure, underscoring the urgency of rigorous wastewater treatment. This principle extends to other infectious diseases like hepatitis, which also demand thorough disinfection. To assess bacterial load, coliform bacteria serve as a reliable indicator of water safety. The Hangzhou Modi WECT-900 Online Coliform Analyzer, which employs the enzyme substrate method, offers user-friendly operation, real-time monitoring, and visual reaction curves for test items, enabling intuitive interpretation of results.

However, monitoring coliform bacteria alone is insufficient. Medical wastewater contains other harmful substances, such as total residual chlorine generated during disinfection. Routine parameters also include biological oxygen demand (BOD), ammonia nitrogen, suspended solids, pH, and chemical oxygen demand (COD). The specific monitoring items may vary across hospitals, requiring case-specific analysis.