In China, certain key water pollutant discharge zones have long been required to install Online Water Quality Monitoring Systems. Specifically, facilities located in environmentally sensitive areas or designated as major pollution sources by municipal-level or higher environmental protection administrative departments are legally obligated to deploy such equipment. Against this backdrop, is online monitoring equipment mandatory for medical wastewater treatment? The answer is unequivocally yes.
Online monitoring devices are integral components of wastewater treatment systems in hospitals, primarily targeting the real-time detection of bacteria, viruses, and conventional hazardous substances in medical wastewater.
Given the complexity of hospital environments, their monitoring priorities differ from those of other water bodies, leading to distinct key monitoring indicators. Hospitals prioritize microbial contaminants such as viruses and bacteria. For instance, the WECT-900 Online Coliform Analyzer is employed to quantify coliform levels in medical wastewater, enabling the assessment of bacterial load and potential health risks. Chlorine disinfection is a common practice during treatment; however, strict control of chlorine dosage is imperative to avoid exceeding the total residual chlorine limit. Beyond these microbial and disinfection-related indicators, routine parameters including chemical oxygen demand (COD), total phosphorus (TP), ammonia nitrogen (NH₃-N), and total organic carbon (TOC) also require systematic monitoring.
Relevant regulatory authorities mandate the classification and targeted treatment of medical wastewater, as outlined below:
1.High-risk waste, such as pathogen cultures and virus preservation samples generated in clinical laboratories, must undergo on-site autoclaving within the respective departments. Other infectious waste shall be treated in accordance with standardized protocols.
2.In infectious disease departments, materials like sputum shall be collected using leak-proof containers, transported to dedicated disinfection facilities for sterilization, and discharged into the hospital’s wastewater treatment system only after confirmation of effective disinfection.
3.Radioactive liquid waste generated by hospitals shall be channeled through specialized pipelines into isolated sewage tanks for degradation, following which it is discharged into the medical wastewater treatment system.
4.Hospitals generate substantial chemical agents, leading to significant chemical waste in medical wastewater. Such hazardous substances shall be collected in leak-proof, specialized containers and subjected to targeted treatment processes.
5.Medical wastewater is conveyed via the hospital’s drainage system to the on-site wastewater treatment station. Treatment must comply with national discharge standards for all parameters: wastewater undergoes sterilization and disinfection using appropriate agents, followed by comprehensive monitoring. The resulting data is used to evaluate the degree of water pollution and verify compliance with regulatory requirements.
