The hazards of hospital medical wastewater

The sources and components of hospital wastewater are complex and highly hazardous. The main sources are sewage discharged from the hospital's diagnosis and treatment rooms, laboratories, wards, laundry rooms, X-ray photography rooms, and operating rooms. Wastewater contains a large amount of pathogenic bacteria, viruses, and chemical agents, which have the characteristics of spatial pollution, acute infection, and latent infection. If hospital sewage containing pathogenic microorganisms is discharged into urban sewage pipes or environmental water bodies without disinfection treatment, it often causes water pollution, leading to various diseases and infectious diseases, seriously endangering people's health.

Principles of hospital medical wastewater treatment

1) Principle of whole process control. Control the entire process of hospital wastewater generation, treatment, and discharge.
2) Principle of reduction. Strictly implement the hospital's internal hygiene and safety management system, and strictly control and separate sewage and waste sources. Domestic sewage and ward sewage are collected separately in the hospital, that is, source control and clean sewage separation. It is strictly prohibited to dispose of hospital sewage and waste into the sewer system at will.
3) Principle of on-site handling. To prevent pollution and harm during the transportation of hospital sewage, on-site treatment must be carried out in the hospital.
4) Classification guidelines. Classify and guide hospital sewage treatment based on hospital nature, scale, sewage discharge destination, and regional differences.
5) The principle of combining compliance with risk control. Comprehensively consider the basic requirements for sewage discharge standards in comprehensive hospitals and infectious disease hospitals, while strengthening risk control awareness, and improving the ability to respond to emergencies from the aspects of process technology, engineering construction, and supervision and management.
6) The principle of ecological security. Effectively removing toxic and harmful substances from sewage, reducing the production of disinfection by-products during the treatment process, and controlling excessive residual chlorine in the effluent to protect ecological environment safety.