A new type of hospital infectious sewage pre-disinfection device

Abstract

The utility model relates to sewage treatment equipment technical field discloses a novel hospital infectious sewage pre -disinfection device, including equipment main part, equipment main part inside is separated as the adjusting pool, disinfection pool and the promotion pool three grids in proper order along sewage flow direction, is communicated through the water pipe between two adjacent pools, and the top of adjusting pool, disinfection pool and promotion pool all correspond to be provided with the inspection well lid, and the water inlet end of equipment main part is assembled with DN water inlet flange, and the water inlet of adjusting pool is communicated with DN water inlet flange, and the water outlet end of equipment main part is assembled with DN water outlet flange, through setting up independent pre -disinfection treatment process, makes the hospital infectious sewage to be first through special pretreatment before entering the total sewage treatment station, avoided the problem that the sewage directly discharged into the total sewage treatment station in the prior art, and high -concentration pathogenic bacteria are inactivated in advance through the device, reduce the pathogenic bacteria breeding probability in the total processing system, reduce the risk that the total processing system operator is infected because of contacting the non -disinfection sewage.

Description

Technical Field

[0001] This utility model relates to the field of sewage treatment equipment technology, specifically a novel pre-disinfection device for infectious sewage from hospitals. Background Technology

[0002] As special public medical facilities, hospitals generate a large amount of infectious wastewater containing bacteria, viruses and various pollutants on a daily basis. If such wastewater is discharged directly without effective pretreatment, it can easily cause environmental transmission risks. Therefore, the pre-disinfection treatment of infectious wastewater in hospitals is a key link to ensure the safe operation of the subsequent total wastewater treatment system and prevent the spread of bacteria.

[0003] Currently, there are two main problems in the field of hospital infectious wastewater treatment. First, hospitals do not have dedicated pre-disinfection devices for infectious wastewater and directly discharge it into the main wastewater treatment plant. Since the main wastewater treatment plant needs to treat all types of wastewater from the hospital, the high concentration of pathogens carried in the infectious wastewater, if not pre-inactivated, will not only increase the risk of pathogen growth within the main treatment system but may also lead to infection of operators during the treatment process. At the same time, it will reduce the treatment efficiency of the main treatment system for other wastewater. Existing hospitals equipped with pre-disinfection devices mostly use the method of directly adding chlorine-containing disinfectants to the wastewater. However, after disinfection, excessive chloride ions and other chlorine-containing byproducts are likely to remain in the wastewater. These residues will inhibit the subsequent microbial treatment units of the main wastewater treatment plant, destroy microbial activity, and thus affect the effluent quality compliance rate of the main treatment system. At the same time, the presence of chlorine-containing byproducts may also pose a potential hazard to the surrounding water environment. Utility Model Content

[0004] The purpose of this invention is to provide a novel pre-disinfection device for infectious wastewater in hospitals, which solves the problems in the prior art where the lack of a dedicated pre-disinfection device for infectious wastewater leads to the failure to pre-inactivate high concentrations of pathogens carried in infectious wastewater and the potential harm to the surrounding water environment caused by the presence of chlorine-containing byproducts.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A novel pre-disinfection device for infectious wastewater from hospitals includes a main body. The main body is internally divided into three compartments along the wastewater flow direction: an equalization tank, a disinfection tank, and a booster tank. Adjacent tanks are connected by a water pipe. Inspection manhole covers are installed on the top of each of the equalization tank, disinfection tank, and booster tank. A DN150 inlet flange is fitted to the inlet of the equalization tank. A DN65 outlet flange is fitted to the outlet of the booster tank. A detachable basket grille is installed inside the equalization tank, located on the side corresponding to the DN150 inlet flange. An ozone disinfection component is installed in the disinfection tank. A booster pump is installed inside the booster tank, with a booster pipe connected to the outlet of the booster pump. The end of the booster pipe furthest from the booster pump is connected to the DN65 outlet flange.

[0007] Preferably, the ozone disinfection assembly includes an ozone generator, a steel gas storage tank, a UPVC gas supply pipe, and an aeration disc. The outlet of the ozone generator is connected to the inlet of the steel gas storage tank via a pipe. The outlet of the steel gas storage tank is connected to one end of the UPVC gas supply pipe. The other end of the UPVC gas supply pipe extends into the disinfection tank and communicates with the aeration disc. The aeration disc is horizontally installed at the bottom of the disinfection tank.

[0008] Preferably, the basket grille includes a rectangular frame and a metal filter screen. The metal filter screen is fixedly embedded inside the rectangular frame. A horizontally extending lap is fixedly provided at the top of the rectangular frame. The lap is detachably connected to the edge of the top of the regulating pool by bolts. The mesh size of the metal filter screen is 5mm.

[0009] Preferably, the water pipe is made of 304 stainless steel, and both ends of the water pipe are welded and fixed to the walls of two adjacent pools, and the installation height of the water pipe on the pool wall is less than 2 / 3 of the height of the corresponding pool.

[0010] Preferably, the aeration disc is a disc-type microporous aeration disc, and the surface of the aeration disc is uniformly provided with aeration holes with a diameter of 0.5 mm. At least two aeration discs are arranged at intervals along the length of the disinfection tank. All of the aeration discs are connected to the UPVC air supply pipe through branch pipes.

[0011] Preferably, the manhole cover includes a manhole cover body and a sealing ring. The sealing ring is fixedly attached to the lower surface edge of the manhole cover body. The manhole cover body is detachably connected to the edge of the corresponding pool body via a buckle. The upper surface of the manhole cover body is provided with a handle for easy opening.

[0012] Preferably, the booster pump is a submersible centrifugal pump, the bottom of the booster pump is fixedly connected to the bottom of the booster tank through a fixed bracket, and a shut-off valve for controlling the water flow is installed on the booster pipe, the shut-off valve being located on the pipe section between the booster pump and the DN65 outlet flange.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0014] 1. This device, by setting up an independent pre-disinfection treatment process, ensures that infectious wastewater from the hospital undergoes specialized pre-treatment before entering the main wastewater treatment plant. This avoids the problem of infectious wastewater being directly discharged into the main wastewater treatment plant in existing technologies. After high-concentration pathogens are inactivated in advance by this device, the probability of pathogen growth in the main treatment system can be significantly reduced, reducing the risk of infection for operators of the main treatment system due to contact with undisinfected wastewater. At the same time, it avoids increasing the treatment load of the main treatment system by mixing infectious wastewater with other types of wastewater, ensuring that the treatment efficiency of the main treatment system for the entire hospital's wastewater is not affected.

[0015] 2. This device uses ozone disinfection instead of the existing method of directly adding chlorine-containing disinfectants. After disinfection, ozone naturally decomposes into oxygen and water, leaving no chloride ions or chlorine-containing byproducts. This fundamentally solves the problem of chlorine residues inhibiting the activity of the microbial treatment unit in the wastewater treatment plant, ensuring that the microorganisms in the total treatment system can effectively degrade pollutants and improve the effluent quality compliance rate of the total treatment system. At the same time, it avoids the potential harm to the surrounding water environment caused by chlorine-containing byproducts discharged with wastewater, thus meeting environmental protection requirements.

[0016] 3. This device is equipped with an equalization tank and a basket screen. The equalization tank homogenizes the wastewater quality, preventing fluctuations in water quality from affecting the disinfection effect. The basket screen removes large particulate impurities from the wastewater in advance, preventing clogging of subsequent components such as water pipes and aeration discs. Compared to some existing pre-disinfection devices that lack impurity pretreatment structures, this device reduces the frequency of downtime and maintenance due to component clogging, lowers equipment operation and maintenance costs, and ensures the continuous and stable operation of the pre-disinfection treatment process, further improving the pretreatment effect of infectious wastewater. Attached Figure Description

[0017] Figure 1 This is one of the schematic diagrams of the composition structure of this utility model;

[0018] Figure 2 This is the second schematic diagram of the composition structure of this utility model.

[0019] The components include: 1. Equipment body; 2. DN150 inlet flange; 3. Basket grille; 4. Manhole cover; 5. Water pipe; 6. Aeration disc; 7. UPVC air supply pipe; 8. Booster pump; 9. Booster pipe; 10. DN65 outlet flange; 11. Air storage tank; 12. Ozone generator. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] refer to Figure 1 and Figure 2 A novel pre-disinfection device for infectious wastewater in hospitals includes a main body 1. The main body 1 is divided into three compartments along the wastewater flow direction: an equalization tank, a disinfection tank, and a booster tank. Adjacent tanks are connected by a water pipe 5. Each of the equalization tank, disinfection tank, and booster tank is equipped with a manhole cover 4. The inlet end of the main body 1 is equipped with a DN150 inlet flange 2, which is connected to the inlet of the equalization tank. The outlet end of the main body 1 is equipped with a DN65 outlet flange 10, which is connected to the outlet of the booster tank. A basket grille 3 is detachably installed inside the equalization tank and is located on the side of the equalization tank corresponding to the DN150 inlet flange 2. The disinfection tank is equipped with an ozone disinfection component. The booster tank is equipped with a booster pump 8. The outlet end of the booster pump 8 is connected to a booster pipe 9, and the end of the booster pipe 9 away from the booster pump 8 is connected to the DN65 outlet flange 10.

[0022] refer to Figure 1 The ozone disinfection assembly includes an ozone generator 12, a steel gas storage tank 11, a UPVC gas supply pipe 7, and an aeration disc 6. The outlet of the ozone generator 12 is connected to the inlet of the steel gas storage tank 11 through a pipe. The outlet of the steel gas storage tank 11 is connected to one end of the UPVC gas supply pipe 7. The other end of the UPVC gas supply pipe 7 extends into the disinfection tank and communicates with the aeration disc 6. The aeration disc 6 is horizontally installed at the bottom of the disinfection tank. The basket grid 3 includes a rectangular frame and a metal filter screen. The metal filter screen is fixedly embedded in the rectangular frame. A horizontally extending lap is fixedly provided on the top of the rectangular frame. The lap is detachably connected to the edge of the top of the regulating tank by bolts. The mesh size of the metal filter screen is 5mm.

[0023] For further reference Figure 2, the water passing pipe 5 is made of 304 stainless steel, both ends of the water passing pipe 5 are welded and fixed to the wall of two adjacent tanks respectively, and the installation height of the water passing pipe 5 on the tank wall is lower than two thirds of the corresponding tank height, the aeration disc 6 is a disc-type microporous aeration disc 6, aeration holes with a diameter of 0.5 mm are evenly opened on the surface of the aeration disc 6, and at least two aeration discs 6 are arranged at intervals along the length direction inside the disinfection tank, a plurality of aeration discs 6 are all communicated with the UPVC gas transmission pipe 7 through branch pipes, the manhole cover 4 comprises a manhole cover body and a sealing rubber ring, the sealing rubber ring is fixedly adhered to the edge of the lower surface of the manhole cover body, the manhole cover body is detachably connected with the tank edge of the corresponding tank body through a hasp, and the upper surface of the manhole cover body is provided with a handle for convenient opening, the lifting pump 8 is a submersible centrifugal pump, the bottom of the lifting pump 8 is fixedly connected with the tank bottom of the lifting tank through a fixed bracket, and a stop valve for controlling water flow is installed on the lifting pipe 9, the stop valve is located on the pipe section between the lifting pump 8 and the DN65 water outlet flange 10.

[0024] The overall working principle of the present utility model is:

[0025] Hospital infectious sewage first enters the regulating tank through the DN150 water inlet flange 2 at the water inlet end of the equipment main body 1, when the sewage flows through the basket grid 3 in the regulating tank, the basket grid 3 intercepts and removes large particle impurities in the sewage, avoiding blockage of subsequent pipelines and components, meanwhile the regulating tank plays a role in homogenizing water quality of the sewage, ensuring the stability of subsequent disinfection treatment, the sewage filtered and homogenized by the regulating tank flows automatically into the disinfection tank through the water passing pipe 5 connecting the regulating tank and the disinfection tank, waiting for disinfection treatment; the manhole covers 4 on the top of each tank are kept closed in this stage, preventing ozone leakage and external pollutants from entering the tanks during the disinfection process, the ozone generator 12 matched with the disinfection tank is started to generate ozone, the generated ozone is first transported to the steel gas storage tank 11 for temporary storage, ensuring stable ozone supply; then the ozone in the steel gas storage tank 11 is transported to the aeration discs 6 in the disinfection tank through the UPVC gas transmission pipe 7, the ozone is converted into microbubbles through the aeration discs 6 and evenly distributed in the sewage of the disinfection tank, fully contacting and reacting with the sewage, the strong oxidizing property of ozone is used to destroy the cell structure of pathogenic bacteria and viruses in the sewage, so as to realize the pre-disinfection treatment of the sewage; ozone is finally decomposed into oxygen and water during the disinfection process, leaving no residual pollutants, avoiding affecting the operation of the subsequent general sewage treatment station, the disinfected sewage flows automatically into the lifting tank through the water passing pipe 5 connecting the disinfection tank and the lifting tank, the lifting pump 8 in the lifting tank is started, the lifting pump 8 pumps the disinfected sewage in the lifting tank through the lifting pipe 9, pressurizes and transports the sewage to the DN65 water outlet flange 10 at the water outlet end of the equipment main body 1, and finally lifts the sewage to the hospital general sewage treatment station through the DN65 water outlet flange 10, completing the whole pre-disinfection process.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel pre-disinfection device for infectious wastewater from hospitals, characterized in that, The equipment includes a main body (1), which is internally divided into three compartments along the sewage flow direction: an equalization tank, a disinfection tank, and a booster tank. Adjacent tanks are connected by a water pipe (5). Each of the equalization tank, disinfection tank, and booster tank is equipped with a manhole cover (4). The inlet end of the main body (1) is equipped with a DN150 inlet flange (2), which is connected to the inlet of the equalization tank. The outlet end of the main body (1) is equipped with a DN65 outlet flange. (10), and the DN65 outlet flange (10) is connected to the outlet of the lifting tank. The regulating tank is detachably installed with a basket grid (3). The basket grid (3) is located on one side of the regulating tank corresponding to the DN150 inlet flange (2). The disinfection tank is equipped with an ozone disinfection component. The lifting tank is equipped with a lifting pump (8). The outlet end of the lifting pump (8) is connected to a lifting pipe (9). The end of the lifting pipe (9) away from the lifting pump (8) is connected to the DN65 outlet flange (10).

2. The novel hospital infectious wastewater pre-disinfection device according to claim 1, characterized in that: The ozone disinfection assembly includes an ozone generator (12), a steel gas storage tank (11), a UPVC gas supply pipe (7), and an aeration disc (6). The outlet of the ozone generator (12) is connected to the inlet of the steel gas storage tank (11) through a pipe. The outlet of the steel gas storage tank (11) is connected to one end of the UPVC gas supply pipe (7). The other end of the UPVC gas supply pipe (7) extends into the disinfection pool and communicates with the aeration disc (6). The aeration disc (6) is installed horizontally at the bottom of the disinfection pool.

3. The novel hospital infectious wastewater pre-disinfection device according to claim 1, characterized in that: The basket grille (3) includes a rectangular frame and a metal filter screen. The metal filter screen is fixedly embedded inside the rectangular frame. A horizontally extending lap is fixedly provided on the top of the rectangular frame. The lap is detachably connected to the edge of the top of the regulating pool by bolts. The mesh size of the metal filter screen is 5mm.

4. The novel hospital infectious wastewater pre-disinfection device according to claim 1, characterized in that: The water pipe (5) is made of 304 stainless steel. Both ends of the water pipe (5) are welded and fixed to the walls of two adjacent pools, and the installation height of the water pipe (5) on the pool wall is less than 2 / 3 of the height of the corresponding pool.

5. A novel hospital infectious wastewater pre-disinfection device according to claim 2, characterized in that: The aeration disc (6) is a disc-shaped microporous aeration disc (6). The surface of the aeration disc (6) is uniformly provided with aeration holes with a diameter of 0.5 mm. At least two aeration discs (6) are spaced apart along the length of the disinfection tank. All of the aeration discs (6) are connected to the UPVC air supply pipe (7) through branch pipes.

6. The novel hospital infectious wastewater pre-disinfection device according to claim 1, characterized in that: The manhole cover (4) includes a manhole cover body and a sealing ring. The sealing ring is fixedly pasted to the lower surface edge of the manhole cover body. The manhole cover body is detachably connected to the edge of the corresponding pool body by a buckle. The upper surface of the manhole cover body is provided with a handle for easy opening.

7. A novel hospital infectious wastewater pre-disinfection device according to claim 1, characterized in that: The lift pump (8) is a submersible centrifugal pump. The bottom of the lift pump (8) is fixedly connected to the bottom of the lift pool through a fixed bracket. A shut-off valve for controlling the water flow is installed on the lift pipe (9). The shut-off valve is located on the pipe section between the lift pump (8) and the DN65 outlet flange (10).

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