High concentration medical waste water purification and recovery treatment system mainly based on flocculation and biomembrane process

Abstract

The invention relates to a high concentration medical waste water purification and recovery treatment system mainly based on flocculation and biomembrane process, 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 flocculation tank, a flocculation sedimentation tank, an aerobic biomembrane treatment tank and a secondary sedimentation tank; wherein the water inlet and the water outlet of the aerobic membrane treatment tank are both arranged at the upper part, the treatment tank is internally provided with a vertical baffle plate connected with the top part, and a fixed packed bed is arranged in the treatment tank at the side of the water inlet of the baffle plate while a water channel is arranged in the treatment tank at the side of the water outlet of the baffle plate; the coagulation tank is provided with a stirring mechanism and a coagulant quantitative feeding device is arranged at the top part; a drain outlet is arranged at the bottom of the coagulation sedimentation tank and the coagulation sedimentation tank is connected with the secondary sludge holding tank by a pipeline; and the drain outlet at the bottom of the secondary sedimentation tank is connected with the secondary sludge holding tank. The invention has good biologic safety and high purification efficiency and is applicable to high concentration medical sewage recovery treatment.

Description

Technical field [0001] The invention relates to a high-concentration medical wastewater purification and recovery treatment system based on flocculation and biofilm methods, and belongs to the technical field of environmental protection. Background technique [0002] Hospital wastewater originates 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. Its COD is close to the value range of domestic sewage, but fluctuates more. Large. The BOD / COD of sewage is generally around 0.5, which has good biodegradability, but biological safety is an important issue and cannot be treated like ordinary sewage. [0003] According to the characteristics of hospital wastewater quality and the adopted discharge standards, the current commonly used treatment technology is to pass the wastewater through the grille and regulating tank into the aerobic ...

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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