Method and system for semi-closely processing medical sewage

Abstract

The invention relates to a method and a system for semi-closely processing medical sewage. The method comprises the following steps: (1) wet type grinding; (2) sterilization by a chlorine method; (3) removal of residue disinfectant; (4) primary sedimentation; (5) aerobic bio-chemical processing of activated sludge; (6) secondary sedimentation, wherein the steps of (1) and (2) and the transfer of the sewage from the step (1) to the step (2) are carried out in a closed state. The system comprises wet type grinding equipment, a sterilization pond, a disinfectant removing pond, a primary sedimentation pond, an activated sludge pond and a secondary sedimentation pond, which are connected in sequence, wherein the wet type grinding equipment, the sterilization pond, and a sewage transfer device between the wet type grinding equipment and the sterilization pond all adopt the closed structure. The method and the system have the advantages of the realization of microorganism safety, unsusceptible occurrence of spreading risk of pathogenic microorganisms, relatively less investment, and convenient operation and maintenance.

Description

technical field [0001] The invention relates to a semi-closed medical sewage treatment method and a treatment system, belonging 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] In order to prevent the formation of microbial pollution or the spread of diseases caused by sewage, debris in sewage, sewage sludge, and waste gas generated during sewage treatment, people began to continuously explore sewage that can avoid the leakage of th...

AI Technical Summary

Problems solved by technology

This system puts all the processing equipment in a large box, thereby realizing the fully enclosed treatment process, and the discharged sewage and waste gas are discharged after disinfection treatment. This technology solves the microbial leakage to a certain extent. However, the large box used for sealing is too huge, which is very inconvenient for actual installation and operation, and is also not conducive to maintenance

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