CN113354075A

CN113354075A - Block-based treatment system for medical sewage and sludge

Info

Publication number: CN113354075A
Application number: CN202010184341.4A
Authority: CN
Inventors: 刘强国; 刘孜博; 何良师
Original assignee: Xiangxi Keliang Environmental Protection Technology Co ltd
Current assignee: Xiangxi Keliang Environmental Protection Technology Co ltd
Priority date: 2020-03-04
Filing date: 2020-03-04
Publication date: 2021-09-07

Abstract

The invention relates to a block treatment system for medical sewage and sludge, which consists of an A block and a B block, wherein the A block is a sewage and sludge treatment block of each medical unit, and the B block is a sewage and sludge centralized treatment block obtained by collecting sewage of the A block; the A block is composed of a septic tank and a matched sludge tank; the B block consists of a sewage treatment station and a matched sludge tank. The A block and the B block are matched with corresponding sludge tanks, and each sludge tank comprises a sludge tank wall, a filter layer, a sludge bag, a sludge pump, a sludge input pipe, a filtrate pump, a filtrate return pipe, a dosing pipe and a sludge tank well cover; when the design period of cleaning is reached, sludge deposited when the septic tank in the block A and the sewage treatment station in the block B operate is pumped into a sludge bag of a sludge tank by a sludge pump through a sludge input pipe for filtering; pumping the filtrate back to the septic tank or the sewage treatment station by using a filtrate pump to be treated with sewage; sludge in a sludge bag of the sludge tank is subjected to long-time anaerobic treatment, disinfection and drying, and finally is subjected to cleaning treatment after the inspection reaches the standard; for the terminal drainage segment, an urban sewage treatment plant is built, and only one small hospital of medical buildings is provided, and the treatment of medical sewage and medical sludge can be independently carried out by adopting B block treatment.

Description

Block-based treatment system for medical sewage and sludge

Technical Field

The invention relates to the field of hospital sewage and sludge treatment and disposal, in particular to a block treatment system for medical sewage and sludge.

Background

According to the regulations in the discharge Standard of Water pollutants for medical institutions (GB 18466-2005): the sewage directly and indirectly discharged into the surface water body and the sea area is discharged into the sewer sewage of the urban secondary sewage treatment plant which is built at the terminal and normally operates, and the pretreatment standard is executed.

In order to further standardize and guide medical sewage treatment, the national environmental protection department sets up technical standards for hospital sewage treatment in 2013 (HJ 2029-2013); in this specification: the first-class strengthening process is recommended to be adopted for the non-infectious disease hospital sewage discharged into the urban sewer.

At present, most of hospital drainage terminals in China are built with urban sewage treatment plants, sewage discharged into a sewer is subjected to a pretreatment standard, if a primary strengthening process is adopted to treat medical sewage, grid slag and coagulating sedimentation sludge are generated every day, further treatment and disposal are needed, and the cost of the treated manpower and material resources is high. Moreover, each hospital has a plurality of buildings, generally speaking, each building of the medical buildings is provided with a septic tank, and sewage in the septic tank is collected to a sewage treatment station of the hospital for primary strengthening treatment. In the treatment mode, the sewage can reach the discharge standard, but the sludge treatment obviously has some problems; if a hospital has a plurality of septic tanks and a centralized sewage treatment station, and all the septic tanks and the centralized sewage treatment station are provided with a first-level strengthening process for treating medical sewage and sludge, the cost of manpower and material resources is high; if only the medical sewage and the sludge which are converged to the sewage treatment station are subjected to primary strengthening treatment, the sludge of the septic tank of a single medical unit is not treated, and the sludge danger generated by the septic tank matched with the medical building is higher in fact.

The invention content is as follows:

aiming at the difficulties of the medical sewage treatment and the sludge treatment, the invention adopts a process of combining the partition treatment and the centralized treatment to the medical sewage and the sludge, so that the medical sewage and sludge treatment system is more perfect, simpler and more effective, thereby reducing the treatment cost of the medical sewage and the sludge and improving the treatment effect of the medical sewage and the sludge, and being convenient for reference in revising the technical specification of the hospital sewage treatment by relevant departments in the future; meanwhile, an alternative and reference method is provided for the current medical sewage and sludge treatment.

The block treatment system for medical sewage and sludge comprises an A block and a B block, wherein the A block is a sewage and sludge treatment block of each medical unit, and the B block is a sewage and sludge centralized treatment block formed by the collected sewage of the A block.

The block A of the medical sewage and sludge treatment system consists of a septic tank and a matched sludge tank; the B block consists of a sewage treatment station and a matched sludge tank.

A medical sewage and sludge block treatment system, wherein each medical unit is matched with an A block treatment facility, sewage is treated by multistage anaerobic precipitation in an A block septic tank, and then is discharged into a B block for further treatment and discharge after reaching the standard; the sludge generated by the operation of the A-block septic tank and the B-block sewage treatment station is stored in the facility, and when the A-block septic tank and the B-block sewage treatment station operate to the design period of sludge clearing, the sludge is pumped into the sludge bags of the A-block and B-block matched sludge tanks for filtering, anaerobic treatment, drying and disinfection treatment.

A blocking treatment system for medical sewage and sludge is characterized in that a sludge tank is a septic tank of a block A or a sludge treatment facility matched with a sewage treatment station of a block B, and the sludge tank comprises a sludge tank wall, a filter layer, a sludge bag, a sludge pump, a sludge input pipe, a filtrate pump, a filtrate return pipe, a dosing pipe and a sludge tank well cover; the filter layer is arranged at the position 0.5-1.5m high on the bottom of the sludge tank; the sludge bag is arranged on the filter layer and is made of a material with a mesh aperture of 0.5-2 mm; the sludge tank and the septic tank of the block A or the sewage treatment station of the block B form a whole, and a vent pipe, a sludge pump, a sludge input pipe, a filtrate pump and a filtrate return pipe are arranged between the sludge tank and the septic tank of the block A or the sewage treatment station of the block B; when the design period of sludge cleaning is reached, sludge is directly pumped into a sludge bag of the sludge tank by a sludge pump through a sludge input pipe for filtration or drying, filtrate is pumped into a sewage treatment facility by a filtrate pump for treatment with sewage, sludge in the sludge bag is subjected to long-time anaerobic treatment, a disinfectant is added through a drug adding pipe, and the sludge is sterilized and dried for a long time and finally lifted out for cleaning after the sludge is inspected to reach the standard;

a block treatment system for medical sewage and sludge is characterized in that the sludge cleaning design period of a septic tank or a sewage treatment station is 3-5 years;

a block treatment system for medical sewage and sludge, wherein a municipal sewage treatment plant is built at a drainage terminal, and only one small hospital of a medical building can be used for the medical sewage and sludge treatment by adopting B block treatment.

A block treatment system for medical sewage and sludge is characterized in that the sewage of medical units in hospitals, infectious departments, department of fire prevention and laboratories, needs to be pretreated according to relevant regulations and then enters the block treatment system for treatment.

Drawings

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention.

FIG. 2 is a plan view of an embodiment of the present invention.

FIG. 3 is a flow chart of a first-stage strengthening process.

Reference numerals: 1-septic tank, 2-sludge tank, 3-filter layer, 4-filtrate pump, 5-filtrate return pipe, 6-chemical feeding pipe, 7-sludge tank well cover, 8-sludge pump, 9-sludge input pipe, 10-treatment facility (septic tank or sewage treatment station) sewage inlet, 11-sludge tank filtrate, 12-sludge bag, 13-sludge bag sludge slag in sludge bag, 14-treatment facility sewage outlet.

Detailed Description

The embodiments of the invention will be further described with reference to the accompanying drawings in which:

the block treatment system for medical sewage and sludge is adopted to treat the medical sewage and sludge, four A block treatment facilities and a B block treatment facility are correspondingly matched, and the sewage is subjected to primary treatment in the A block and then is uniformly collected in the B block to be treated and is discharged into a city sewer after reaching the standard.

As shown in figures 1 and 2, the medical sewage and sludge block treatment system is characterized in that sludge generated in the operation process of an A-block septic tank or a B-block sewage treatment station (1) is deposited in the septic tank or the sewage treatment station (1), when the septic tank or the sewage treatment station (1) reaches a designed sludge cleaning period, a sludge pump (8) is used for pumping into a sludge bag (12) in a sludge tank (2) through a sludge input pipe (9) for filtering or drying, filtrate is pumped back to the septic tank or the sewage treatment station (1) through a filtrate pump (4) for treatment with sewage, sludge (13) in the sludge bag (12) is subjected to long-time anaerobic treatment, a disinfectant is added through a medicine adding pipe (6) for sterilizing and drying for a long time, and finally the sludge bag filled with the sludge is lifted out for cleaning treatment after inspection;

the sludge cleaning period of the septic tank or the sewage treatment station is designed to be 3 years, and the periods of filtering, anaerobism, drying and disinfection of the sludge in the sludge bag of the sludge tank are also set to be 3 years. That is to say: according to the medical sludge produced in the hospital medical sewage treatment process, if the medical sludge is treated according to the traditional sewage and sludge treatment method, the grid slag and the coagulated sludge of 4 medical units and sewage treatment stations are required to be cleaned, filtered, dried, disinfected and cleared, and the sludge produced by the operation of the A-block septic tank or the B-block sewage treatment station in the embodiment is only required to be treated and disposed once in 3 years, so that the labor cost and the expense for sludge treatment and disposal are greatly saved.

The present invention is not limited to the above embodiments, but rather to the embodiments and features of the invention, which are described in the following description.

Claims

1. A block treatment system for medical sewage and sludge consists of an A block and a B block, wherein the A block is a sewage and sludge treatment block of each medical unit, and the B block is a sewage and sludge centralized treatment block after the sewage of the A block is collected; the A block consists of a septic tank and a matched sludge tank, and the B block consists of a sewage treatment station and a matched sludge tank; the sludge tank comprises a wall body, a filter layer, a sludge bag, a sludge pump, a sludge input pipe, a filtrate pump, a filtrate return pipe, a dosing pipe and a sludge tank well cover; the filter layer is arranged at the position 0.5-1.5m high on the upper part of the bottom of the sludge tank; the sludge bag is arranged on the filter layer and is made of a material with a mesh aperture of 0.5-2 mm; a vent pipe, a sludge pump, a sludge input pipe, a sludge filtrate pump and a filtrate return pipe are arranged between the sludge tank and the septic tank in the area A or the sewage treatment station in the area B; when the sludge deposited by the septic tank in the block A and the sewage treatment station in the block B runs and reaches the design period of cleaning, pumping the sludge into a sludge bag of the sludge tank by a sludge pump through a sludge input pipe for filtering; pumping the filtrate back to the septic tank in the area A or the sewage treatment station in the area B by using a filtrate pump to be treated together with the sewage; and sludge in a sludge bag of the sludge tank is subjected to long-time anaerobic treatment, disinfection and drying, and finally is subjected to clearing treatment after the inspection reaches the standard.