Hospital waste water treatment system

Abstract

The invention discloses a hospital waste water treatment system, which belongs to the field of environment protection. The hospital waste water treatment system is characterized in that: hospital waste water is treated in a digestion pool, a waste water regulation pool, a hydrolysis acidification pool and a bio-aeration pool and then treated by membrane biological reactor biomembrane technique so as to separate sludge from water, the separated clean water enters a disinfecting pool to be disinfected by ozone and then enters a recycled water pool; and the separated sludge is returned to the hydrolysis acidification pool by a sludge return pump to undergo secondary degradation treatment. In the invention, through multi-stage, multilayer and comprehensive treatment, almost all harmful pathogenic microbes in waste water are killed basically, and water in the recycled water pool is protected from secondary pollution and reaches emission standards higher than those specified by China and can be reused; in a systemic treatment process, the organic matters in sludge are degraded completely, and special treatment of the sludge is not required; and the system operates in a closed environment, and harmful gases generated in a treatment process are exhausted after being disinfected by ozone and ultraviolet disinfecting device in an exhaust pipe without polluting the air.

Description

technical field [0001] The invention belongs to the field of environmental protection, in particular to a method and equipment for treating hospital sewage. Background technique [0002] Hospital sewage contains some special pollutants, such as drugs, disinfectants, diagnostic agents, detergents, and a large number of pathogenic microorganisms, parasites, and viruses, which are more polluting than industrial and domestic sewage. If hospital sewage containing pathogenic microorganisms is not treated or treated up to standard and allowed to discharge, it will inevitably pollute the surrounding environment, ground water sources, rivers, and lakes, and cause serious harm to the health of the people. [0003] The country has set strict discharge standards for sewage discharge, and the discharge standards are revised once every 3-5 years, increasing year by year. At present, the sewage discharge of most hospitals cannot meet the discharge standards stipulated by the state. Traditi...

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Problems solved by technology

[0002] Hospital sewage contains some special pollutants, such as drugs, disinfectants, diagnostic agents, detergents, and a large number of pathogenic microorganisms, parasites, and viruses, which are more polluting than industrial and domestic sewage. If hospital sewage containing pathogenic microorganisms is not treated or treated up to standard and allowed to discharge, it will inevitably pollute the surrounding environment and ground water sources, rivers, and lakes, and cause serious harm to the health of the people.

[0003] The country has set strict discharge standards for sewage discharge, and the discharge standards are revised once every 3-5 years, increasing year by year. At present, the sewage discharge of most hospitals cannot meet the discharge standards stipulated by the state. Traditional process treatment Hospital sewage is to directly enter the disinfection pool through the regulating tank, and then discharge it into the sewer pipe after being disinfected by chlorine dioxide. This method is used to treat hospital sewage. Although the process is simple and the operation is convenient, the main problems are: a. The sewage treated by this method does not reach the discharge standard stipulated by the state, causing pollution to the water source; b, the use of chlorine dioxide disinfection in the disinfection pool will also cause secondary pollution to the water source; c, the treated sewage cannot be reused Utilization, resulting in waste of water resources, d. In the process of sewage treatment, the sludge generated needs to be treated separately

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