Large and medium hospital waste water sterilization and purification treatment system by upflow biomembrane process

Abstract

The invention relates to a large and medium hospital waste water sterilization and purification treatment system by upflow biomembrane process, comprising a closed type collecting tank, a closed type primary sedimentation tank, a closes type sludge holding tank, a closed type sludge disinfection tank, a closed type sterilization tank, a preaeration tank, an upflow aerobic biomembrane treatment tank and a secondary sedimentation tank which are sequentially connected; wherein the water entry of the closed type collecting tank is provided with a mechanical grille and a grid residue grinder; the water inlet and the water outlet of the closed type collecting tank, the closed type primary sedimentation tank, the closed type sterilization tank, the preaeration tank and the secondary sedimentation tank are sequentially connected; the water inlet of the upflow aerobic biomembrane treatment tank is arranged at the lower part, the water outlet is arranged at the upper part, and a fixed packed bed is arrange at the middle part; and the water outlet of the secondary sedimentation tank is connected with a water reservoir. The invention has good biological safety and is difficult to cause danger of pathogenic microorganism diffusion with good purification effect; 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 hospital wastewater upflow biofilm method sterilization and purification treatment system, which belongs to the technical field of environmental protection. Background technique [0002] Medical sewage 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 characteristics of medical sewage water quality and the adopted discharge standards, the current commonly used treatment technology is to pass the sewage through the grid and regulating tank i...

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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