Introduction to the process of hospital sewage treatment equipment
Hospital sewage, everyone thinks it's incredible. In fact, in addition to general domestic sewage, hospital sewage also contains chemical substances and radioactive wastewater. Hospital sewage is complex in its composition, containing toxic, harmful physical and chemical pollutants and radioactive pollution, etc., with the characteristics of space pollution, acute infection and latent infection, and will become an important way of diffusion and serious pollution of the environment without effective treatment. Therefore, it must be treated before it can be discharged, especially the sewage discharged from infectious disease wards such as hepatitis must be disinfected before it can be discharged.
Hospital domestic sewage is the wastewater discharged by patients in their daily lives, and some of them contain a large amount of E. coli. Among them are mainly manure and washing sewage. Hospital sewage contains a large amount of organic matter, such as cellulose, starch, sugar, fat and protein. It also often contains pathogenic bacteria, viruses, and parasite eggs; Inorganic salts such as chloride, sulfate, phosphate, bicarbonate and sodium, potassium, calcium, magnesium, etc. The general characteristics are high nitrogen, sulfur and phosphorus content, and under the action of anaerobic bacteria, it is easy to produce foul-smelling substances.
Introduction to the process of hospital sewage treatment equipment
At present, most of the hospital sewage treatment equipment is treated by physical methods, without adding any drugs, without excessive chlorine emissions, and without follow-up investment. The main body of treatment is ozone disinfection + filtration adsorption. Ozone disinfection, its bactericidal mechanism is to destroy and oxidize cell membranes, cytoplasm, enzyme systems and nucleic acids, so that bacteria and viruses can be quickly inactivated. Ozone, which uses air as a raw material, kills more than 99% of pathogenic microorganisms, bacteria, and viruses contained in the sewage of medical institutions. The sewage treatment equipment of the entire Luoyang Hospital works continuously for 80,000 hours under standard conditions.
The principle of hospital sewage treatment is: quality and diversion, local separation and treatment, and the pollution is eliminated at the nearest pollution source. The main treatment methods are sedimentation and disinfection. In order to improve the disinfection efficiency and not produce secondary pollution, ozonation disinfection tends to be used, and the emission standard can be reached after disinfection. The sludge generated during the treatment process is often treated by lime disinfection and high-temperature composting.