The sources and components of hospital sewage are complex and harmful. The source is mainly sewage discharged from the hospital's treatment room, laboratory, ward, laundry room, X - ray photography room and operating room. Sewage contains a large number of pathogenic bacteria, viruses and chemicals, which are characterized by space pollution, acute infection and latent infection. If hospital sewage containing pathogenic microorganisms is discharged into urban sewer or environmental water without disinfection, it will often cause water pollution, cause various diseases and infectious diseases, and seriously endanger people's health.
First, the hospital wastewater treatment principle
1 ) the whole process control principle. To control the whole process of hospital sewage generation, treatment and discharge.
2 ) Principle of reduction. Strict hospital internal health and safety management system, strict control and separation at the source of sewage and dirt, hospital domestic sewage and ward sewage are collected separately, i.e. source control and clean-up diversion. It is strictly prohibited to dispose of hospital sewage and dirt into sewers at will.
3 ) principle of local treatment. In order to prevent the pollution and harm in the process of hospital sewage transportation, local treatment must be carried out in the hospital.
4 ) Guiding principles of classification. According to the hospital nature, scale, sewage discharge destination and regional differences, the hospital sewage treatment is classified and guided.
5 ) Principle of combining compliance with risk control. Comprehensive consideration should be given to the basic requirements for sewage discharge in general hospitals and infectious disease hospitals, while strengthening the awareness of risk control and improving the ability to deal with emergencies from the aspects of technology, engineering construction and supervision and management.
6 ) Principle of ecological security. Effectively remove toxic and harmful substances from sewage, reduce the generation of disinfection by-products in the treatment process, control excessive residual chlorine in the effluent, and protect the ecological environment.
