Large and medium high concentration medical waste water biofilter sterilization and purification treatment system

Abstract

The invention relates to a large and medium high concentration medical waste water biofilter sterilization and purification treatment system, comprising a closed type collecting tank, a closed type primary sedimentation tank, a closed type sludge holding tank, a closed type sludge disinfection tank, a closed type sewage sterilization tank, a preaeration tank, a biological filtering tower and a secondary sedimentation tank which are sequentially connected; wherein the intake pipe of the biologic filtering tower is arranged at the upper part of the tower body and the biologic filtering tower is provided with a plurality of nozzles, multilayer filler in the tower, an air outlet at the top part, an air inlet on the lower side face and a water channel at the bottom; and the water outlet of the secondary sedimentation tank is connected with a water reservoir. The invention has good biologic safety and is difficult to cause danger of pathogenic microorganism diffusion with good purification effect and high purification degree of output water; and meanwhile the required investment is relatively small and operation and maintenance are convenient.

Description

technical field [0001] The invention relates to a large and medium-sized high-concentration medical wastewater biofilter sterilization and purification treatment system, which belongs to the technical field of environmental protection. Background technique [0002] Medical wastewater comes from hospitals and other medical institutions, which may contain a large number of pathogenic microorganisms, and contain various drugs, washing powder, soda ash, radioisotopes, cotton swabs, gauze, etc., and its COD is close to the numerical range of domestic sewage, but the fluctuation is relatively large. Large. The BOD / COD of sewage is generally around 0.5, and the biodegradability is good, but biological safety is an important issue, and it cannot be treated like ordinary sewage. [0003] According to the water quality characteristics of medical wastewater and the adopted discharge standards, the current commonly used treatment technology is to pass the sewage through the grid and the...

AI Technical Summary

Problems solved by technology

The current ubiquitous defects are mainly manifested in several aspects: (1) Open tanks are mostly used, especially for aerobic biochemical treatment, because aeration is required in it, there will be a large amount of other discharges, and the gas in these gases The sol will carry microorganisms and diffuse into the atmosphere, and the sewage treatment plant itself is a source of pollution

(2) The operation is not standardized, and the degree of automatic detection and control is low. (3) Some processing sites occupy a large area and high operating costs

[0004] In view of this, people began to develop a fully enclosed treatment system, which closed all treatment equipment, and sterilized the purified water discharged from it and the collected air to achieve the purpose of eliminating biological harmlessness. Closed equipment requires relatively high investment and is difficult to operate and maintain

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