Sterilization and disinfection equipment for sewage treatment of household garbage incineration slag

Abstract

The application discloses a sterilization and disinfection equipment for household garbage incineration slag sewage treatment, which comprises a purification box, a purification cabin is installed at the bottom of the purification box, an aeration equipment is connected to one side of the purification cabin, a rotating pipe is rotatably connected to the upper end of the purification cabin, a conical filter cabin is fixed to the upper end of the rotating pipe, a rotating mechanism is installed at one side of the rotating pipe, a second conical filter screen is sleeved at the upper end of the conical filter cabin, and buffer mechanisms are connected to the two sides of the second conical filter screen. The application utilizes microorganism to degrade organic pollutants, fully gives the self-purification ability of a natural ecological system, reduces the use of chemical agents, reduces potential harm to the environment, conforms to the environmental protection concept, and after multi-stage treatment and comprehensive disinfection, treated water can reach the discharge standard, can be directly discharged or used subsequently, reduces pollution to the environment, and is helpful to sustainable use of water resources.

Description

Technical Field

[0001] This invention relates to the field of slag wastewater treatment technology, and in particular to a sterilization and disinfection device for treating wastewater from municipal solid waste incineration slag. Background Technology

[0002] Wastewater from municipal solid waste incineration slag is characterized by its complex composition, containing heavy metals, pathogens, organic pollutants, highly adhesive particulate matter, and difficulty in disinfection. Traditional equipment presents the following problems when treating it:

[0003] 1. Defects in Filtration Structure: When treating wastewater from municipal solid waste incineration slag using traditional fixed bar screens, the pores are easily clogged by the highly adhesive particles in the wastewater. While high-pressure nozzles can clean the surface of the bar screen, they are ineffective against particles that have penetrated deep into the screen. With increased usage time, deep-seated particles accumulate, leading to a significant decrease in the bar screen's filtration efficiency, and it may even completely lose its filtration function. This necessitates frequent bar screen replacements, increasing treatment costs and equipment maintenance workload.

[0004] 2. Incomplete disinfection: Wastewater from municipal solid waste incineration contains a large number of pathogens and organic pollutants, making disinfection difficult. Traditional disinfection methods may not be able to effectively kill all pathogens, especially some highly resistant bacteria and viruses. Furthermore, traditional disinfection equipment may not be able to disinfect the wastewater comprehensively and evenly, resulting in some pathogens remaining in the wastewater and posing a risk of secondary pollution.

[0005] 3. Filter clogging is a prominent problem: Traditional filters are easily clogged by particulate matter in wastewater after prolonged use. Filter clogging not only affects filtration efficiency but also increases water flow resistance, leading to a decrease in wastewater treatment efficiency. Furthermore, cleaning the filters is a tedious and difficult process, requiring significant time and manpower.

[0006] To address these issues, we propose a sterilization and disinfection device for treating wastewater from municipal solid waste incineration slag. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of existing technologies by proposing a sterilization and disinfection device for treating wastewater from municipal solid waste incineration slag.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A sterilization and disinfection device for treating wastewater from municipal solid waste incineration slag includes a purification tank. A purification chamber is installed at the bottom of the purification tank. An aeration device is connected to one side of the purification chamber. A rotating pipe is rotatably connected to the upper end of the purification chamber. A conical filter chamber is fixed to the upper end of the rotating pipe. A rotating mechanism is installed on one side of the rotating pipe. A second conical filter screen is fitted onto the upper end of the conical filter chamber. Buffer mechanisms are connected to both sides of the second conical filter screen. A first conical filter screen is fitted inside the second conical filter screen. A rotating device is connected to the upper end of the first conical filter screen. A conveying pipe is connected to the lower end of the purification tank. One end of the conveying pipe is connected to a disinfection tank. A driving mechanism is installed at the upper end of the disinfection tank. Four ultraviolet lamps are installed on the driving mechanism.

[0010] Preferably, the aeration device includes a high-pressure air pump fixed to one side of the purification chamber. The air pump is connected to an air supply pipe at its air supply end. One end of the air supply pipe is connected to a fixing ring. The fixing ring is fixed to the outer side wall of the purification chamber. Multiple nozzles are connected at equal intervals on the inner side wall of the fixing ring. The nozzles penetrate the side wall of the purification chamber and extend into the purification chamber.

[0011] Preferably, the rotating mechanism includes a fixed plate fixed to one side of the upper end of the purification chamber, and a second drive motor is installed on the upper end of the fixed plate. The output shaft and the rotating tube of the second drive motor are both fixedly fitted with first gears, and the two first gears mesh with each other.

[0012] Preferably, the buffer mechanism includes connecting plates fixed on both sides of the second conical filter screen, with elastic dampers connected to both the upper and lower ends of the connecting plates. An installation plate is mounted on one end of each elastic damper, and one end of the installation plate is fixed to one side inside the purification box.

[0013] Preferably, the rotating device includes a first drive motor fixed to the upper end of the purification box, and a connecting rod is connected to the end of the output shaft of the first drive motor. The connecting rod passes through the side wall of the purification box and is fixed to the upper middle part of the first conical filter screen.

[0014] Preferably, scrapers are installed obliquely on both sides inside the conical filter chamber, and one end of the scraper abuts against both sides of the second conical filter screen.

[0015] Preferably, the driving mechanism includes a protective box fixed to the upper end of the disinfection box, a third drive motor installed on the top side inside the protective box, four rotating shafts rotatably connected to the bottom inside the protective box, a third gear fixed to the upper end of the rotating shaft, a ring rack meshing together among the four third gears, an ultraviolet lamp tube connected to the lower end of the rotating shaft, the lower end of the ultraviolet lamp tube extending into the disinfection box, and the output shaft end of the third drive motor connected to the upper end of one of the third gears.

[0016] Preferably, an input pipe is installed on both sides of the upper end of the purification box, and the input pipe corresponds to the first conical filter screen. An output pipe is connected to one end of the disinfection box, and a valve is installed on the delivery pipe.

[0017] Preferably, the sidewalls inside the disinfection box are coated with a nano-TiO2 film.

[0018] The operating flow of this invention:

[0019] S1. Preliminary filtration: Wastewater enters the first conical filter screen through the inlet pipe. The first drive motor drives the first conical filter screen to rotate through the connecting rod. The rotating first conical filter screen can more effectively intercept large particles in the wastewater, thus preliminarily purifying the wastewater.

[0020] S2, Secondary Filtration: The wastewater that has passed the initial filtration enters the second conical filter screen. The second drive motor drives the rotating tube to rotate through the first gear, thereby rotating the conical filter chamber. The rotating conical filter chamber can further filter the fine particles in the wastewater. At the same time, the scrapers installed at an angle inside the conical filter chamber will scrape the sides of the second conical filter screen to prevent fine particles from clogging the filter screen.

[0021] S3. Purification Treatment: Wastewater that has undergone secondary filtration enters the purification chamber. A high-pressure air pump delivers air to the fixed ring through an air supply pipe. The air is then injected into the purification chamber by nozzles inside the fixed ring, providing sufficient oxygen to the wastewater. The injection of oxygen promotes the growth and metabolism of microorganisms, which can degrade organic pollutants in the wastewater, thus purifying the wastewater.

[0022] S4. Disinfection Treatment: The purified wastewater enters the disinfection tank through the delivery pipe. The third drive motor drives one of the third gears to rotate. Through the transmission of the ring rack, all four third gears rotate simultaneously, which in turn drives the ultraviolet lamp to rotate. The rotating ultraviolet lamp can thoroughly and evenly disinfect the wastewater in the disinfection tank, killing pathogens in the wastewater. The inner wall of the disinfection tank is coated with a nano TiO2 film, which generates hydroxyl radicals (·OH) under ultraviolet excitation, decomposing organic pollutants.

[0023] S5. Output and Discharge: The disinfected water is discharged from the equipment through the output pipe.

[0024] The present invention has the following advantages:

[0025] 1. The fixed grid of traditional equipment is easily clogged, and the accumulation of deep particles affects the filtration efficiency and requires frequent replacement. The present invention uses a rotatable first conical filter screen and a second conical filter screen, which are scraped off with a scraper. This effectively avoids the clogging of the filter screen by particles, improves the filtration efficiency, reduces the frequency of grid replacement, and reduces the processing cost and equipment maintenance workload.

[0026] 2. Traditional disinfection methods are difficult to effectively kill all pathogens and the disinfection is uneven. This invention uses rotating ultraviolet lamps to disinfect sewage in a comprehensive and uniform manner. At the same time, the inner wall of the disinfection box is coated with a nano-TiO2 film, which generates hydroxyl radicals under ultraviolet excitation to decompose organic pollutants, which can more thoroughly kill pathogens in sewage and reduce the risk of secondary pollution.

[0027] 3. Traditional filters become clogged, affecting filtration efficiency and water flow resistance, and cleaning is tedious. The filter rotation design and scraper function of this invention prevent filter clogging, ensure filtration efficiency, avoid increased water flow resistance, improve sewage treatment efficiency, and reduce the time and manpower required for cleaning the filter.

[0028] 4. Through preliminary filtration and secondary filtration, large particles and fine particles can be intercepted respectively. Then, the organic pollutants are degraded by microorganisms in the purification chamber, so that the sewage is fully purified and the water quality is improved.

[0029] 5. The synergistic effect of the rotating ultraviolet lamp and the nano-TiO2 film can thoroughly disinfect wastewater and decompose organic pollutants, ensuring that pathogens in the wastewater are effectively killed, and further improving the quality of the treated water.

[0030] In summary, this invention utilizes microorganisms to degrade organic pollutants, fully leveraging the self-purification capacity of the natural ecosystem, reducing the use of chemical agents, and minimizing potential environmental hazards, thus aligning with environmental protection principles. Furthermore, through multi-stage treatment and comprehensive disinfection, the treated water meets discharge standards and can be directly discharged or reused, reducing environmental pollution and contributing to the sustainable use of water resources. Attached Figure Description

[0031] Figure 1 This is a structural diagram of the internal structure of the purification box of the present invention;

[0032] Figure 2 This is a diagram of the external structure of the present invention;

[0033] Figure 3 This is a structural diagram of the scraper assembly of the present invention;

[0034] Figure 4 This is a diagram showing the connection structure between the buffer mechanism and the second conical filter screen of the present invention.

[0035] Figure 5 This is a structural diagram showing the connection between the rotating device and the first conical filter screen of the present invention;

[0036] Figure 6 This is a structural diagram showing the third gear and the ring rack of the present invention;

[0037] Figure 7This is a structural diagram of the nozzle of the present invention;

[0038] Figure 8 This is a structural diagram of the ultraviolet lamp tube of the present invention.

[0039] In the diagram: 1 Purification chamber, 2 Protection chamber, 3 Disinfection chamber, 4 Output pipe, 5 Ultraviolet lamp, 6 Delivery pipe, 7 Valve, 8 High-pressure air pump, 9 Air delivery pipe, 10 Input pipe, 11 First drive motor, 12 Scraper, 13 Conical filter chamber, 14 Rotating pipe, 15 First gear, 16 Second gear, 17 Second drive motor, 18 Purification chamber, 19 Connecting rod, 20 First conical filter screen, 21 Mounting plate, 22 Elastic damper, 23 Connecting plate, 24 Second conical filter screen, 25 Third gear, 26 Fixing ring, 27 Fixing plate, 28 Nozzle, 29 Third drive motor, 30 Ring rack. Detailed Implementation

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0041] Reference Figure 1-8 A sterilization and disinfection device for treating wastewater from municipal solid waste incineration slag includes a purification tank 1, a purification chamber 18 installed at the bottom of the purification tank 1, an aeration device connected to one side of the purification chamber 18, a rotating pipe 14 rotatably connected to the upper end of the purification chamber 18, a conical filter chamber 13 fixed to the upper end of the rotating pipe 14, a rotating mechanism installed on one side of the rotating pipe 14, a second conical filter screen 24 sleeved on the upper end of the conical filter chamber 13, buffer mechanisms connected to both sides of the second conical filter screen 24, a first conical filter screen 20 sleeved inside the second conical filter screen 24, a rotating device connected to the upper end of the first conical filter screen 20, a conveying pipe 6 connected to the lower end of the purification tank 18, a disinfection tank 3 connected to one end of the conveying pipe 6, a driving mechanism installed at the upper end of the disinfection tank 3, and four ultraviolet lamps 5 installed on the driving mechanism.

[0042] The aeration equipment includes a high-pressure air pump 8 fixed to one side of the purification tank 1. The air supply end of the high-pressure air pump 8 is connected to an air supply pipe 9. One end of the air supply pipe 9 is connected to a fixing ring 26. The fixing ring 26 is fixed to the outer wall of the purification chamber 18. Multiple nozzles 28 are connected at equal intervals on the inner side wall of the fixing ring 26. The nozzles 28 penetrate the side wall of the purification chamber 18 and extend into the purification chamber 18, which can make air enter the purification chamber evenly, providing sufficient and evenly distributed oxygen for microorganisms. This is conducive to the better growth and metabolism of microorganisms in sewage. Compared with the traditional aeration method, the surrounding nozzle layout can avoid aeration dead zones, improve the aeration effect, and thus more effectively degrade organic pollutants in sewage.

[0043] The rotating mechanism includes a fixed plate 27 fixed to one side of the upper end of the purification chamber 18. A second drive motor 17 is installed on the upper end of the fixed plate 27. A first gear 15 is fixedly mounted on the output shaft of the second drive motor 17 and the rotating tube 14. The two first gears 15 mesh with each other. Through gear transmission, the rotation speed and rotation stability of the rotating tube can be precisely controlled. When the second drive motor starts, the two meshing first gears can smoothly transmit power to the rotating tube, so that the conical filter chamber can achieve stable rotation, thereby ensuring the filtration effect of sewage. This transmission method has a simple structure, is easy to maintain, and has high transmission efficiency.

[0044] The buffer mechanism includes connecting plates 23 fixed on both sides of the second conical filter screen 24. Both ends of the connecting plates 23 are connected to elastic dampers 22. One end of the elastic damper 22 is equipped with a mounting plate 21. One end of the mounting plate 21 is fixed to one side inside the purification box 1. During the rotation of the conical filter chamber, the buffer mechanism can drive the second conical filter screen 24 to vibrate, so that it contacts the scraper 12 for easy cleaning.

[0045] The rotating device includes a first drive motor 11 fixed to the upper end of the purification tank 1. The output shaft of the first drive motor 11 is connected to a connecting rod 19. The connecting rod 19 passes through the side wall of the purification tank 1 and is fixed to the upper middle part of the first conical filter screen 20. The first drive motor drives the first conical filter screen to rotate through the connecting rod. When the first conical filter screen 20 rotates, it can generate centrifugal force. The centrifugal force can make the sewage more evenly distributed on the surface of the filter screen, improve the interception efficiency of large particles. Compared with the traditional static filtration method, the rotating filtration can more effectively prevent the filter screen from clogging and enhance the effect of preliminary filtration.

[0046] Scrapers 12 are installed obliquely on both sides inside the conical filter chamber 13, and one end of the scraper 12 abuts against the two sides of the second conical filter screen 24. The driving mechanism includes a protective box 2 fixed to the upper end of the disinfection box 3. A third drive motor 29 is installed on one side of the top inside the protective box 2. Four rotating shafts are rotatably connected to the bottom inside the protective box 2. A third gear 25 is fixed to the upper end of the rotating shaft. A ring rack 30 is meshed between the four third gears 25. An ultraviolet lamp 5 is connected to the lower end of the rotating shaft. The lower end of the ultraviolet lamp 5 extends into the disinfection box 3. The output shaft end of the third drive motor 29 is connected to the upper end of one of the third gears 25. Through the transmission structure of the ring rack and multiple third gears, the synchronous rotation of multiple ultraviolet lamps can be realized, so that the ultraviolet lamps have a wider and more uniform irradiation range in the disinfection box. The rotating ultraviolet lamps can avoid disinfection dead corners and ensure that pathogens in sewage can be completely killed. At the same time, the protective box can provide protection for the drive motor and transmission mechanism to prevent them from being affected by the external environment and ensure the stable operation of the equipment.

[0047] The upper two sides of the purification box 1 are equipped with input pipes 10, and the input pipes 10 correspond to the first conical filter screen 20. One end of the disinfection box 3 is connected to the output pipe 4, and the conveying pipe 6 is equipped with a valve 7. The side wall inside the disinfection box 3 is coated with a nano TiO2 film, which generates hydroxyl radicals under ultraviolet excitation to decompose organic pollutants.

[0048] The operating flow of this invention:

[0049] S1. Preliminary filtration: Wastewater enters the first conical filter screen 20 through the inlet pipe 10. The first drive motor 11 drives the first conical filter screen 20 to rotate through the connecting rod 19. The rotating first conical filter screen 20 can more effectively intercept large particles in the wastewater, thus preliminarily purifying the wastewater. When the wastewater enters the first conical filter screen 20, due to the special shape of the first conical filter screen 20, the wastewater will flow along the inclined surface of the filter screen. The rotating first conical filter screen 20 utilizes centrifugal force and the flushing effect of water flow to more effectively intercept large particles in the wastewater on the surface of the filter screen. Large particles include stones, plastic fragments, etc., which will gradually gather and slide to the bottom of the filter screen during the rotation process, making it convenient for subsequent cleaning. After preliminary purification, the content of large particles in the wastewater is significantly reduced, which reduces the burden on subsequent filtration and purification treatment.

[0050] S2, Secondary Filtration: The wastewater after preliminary filtration enters the second conical filter screen 24. The second drive motor 17 drives the rotating tube 14 to rotate through the first gear 15, thereby causing the conical filter chamber 13 to rotate. The rotating conical filter chamber 13 can further filter fine particles in the wastewater. At the same time, the scraper 12 installed at an inclination inside the conical filter chamber 13 will scrape the sides of the second conical filter screen 24 to prevent fine particles from clogging the filter screen.

[0051] S3. Purification treatment: Wastewater that has undergone secondary filtration enters the purification chamber 18. The high-pressure air pump 8 delivers air to the fixed ring 26 through the air supply pipe 9, and then the nozzle 28 in the fixed ring 26 injects air into the purification chamber 18 to provide sufficient oxygen for the wastewater. The injection of oxygen promotes the growth and metabolism of microorganisms, which can degrade organic pollutants in the wastewater and achieve the purification of wastewater.

[0052] S4. Disinfection Treatment: The purified wastewater enters the disinfection tank 3 through the conveying pipe 6. The third drive motor 29 drives one of the third gears 25 to rotate. Through the transmission of the ring rack 30, all four third gears 25 rotate simultaneously, thereby driving the ultraviolet lamp 5 to rotate. The rotating ultraviolet lamp 5 can thoroughly and uniformly disinfect the wastewater in the disinfection tank 3, killing pathogens in the wastewater. The inner wall of the disinfection tank 3 is coated with a nano-TiO2 film, which generates hydroxyl radicals under ultraviolet excitation, decomposing organic pollutants. The rotating ultraviolet lamp can thoroughly and uniformly disinfect the wastewater in the disinfection tank. Ultraviolet light has a strong bactericidal ability; it can destroy the DNA and RNA structure of pathogens, rendering them inactive, thereby achieving the purpose of killing pathogens. The inner wall of the disinfection tank is coated with a nano-TiO2 film. Under ultraviolet light excitation, the nano-TiO2 film generates hydroxyl radicals. Hydroxyl radicals have strong oxidizing properties, which can further decompose organic pollutants in the wastewater. At the same time, it also has a certain inhibitory and decomposition effect on some pathogens that are difficult to kill by ultraviolet light. The synergistic disinfection method of ultraviolet light and nano-TiO2 film can more thoroughly purify wastewater and improve the disinfection effect.

[0053] S5. Output and Discharge: The disinfected water is discharged from the equipment through the output pipe.

[0054] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A sterilization and disinfection equipment for sewage treatment of municipal solid waste incineration slag, comprising a purification tank (1), characterized in that, The bottom of the purification tank (1) is provided with a purification cabin (18), one side of the purification cabin (18) is connected with an aeration equipment, the upper end of the purification cabin (18) is rotatably connected with a rotating pipe (14), the upper end of the rotating pipe (14) is fixedly provided with a conical filter cabin (13), one side of the rotating pipe (14) is provided with a rotating mechanism, the upper end of the conical filter cabin (13) is sleeved with a second conical filter screen (24), the two sides of the second conical filter screen (24) are connected with a buffer mechanism, the second conical filter screen (24) is sleeved with a first conical filter screen (20), the upper end of the first conical filter screen (20) is connected with a rotating equipment, the lower end of the purification cabin (18) is connected with a conveying pipe (6), one end of the conveying pipe (6) is connected with a disinfection tank (3), the upper end of the disinfection tank (3) is provided with a driving mechanism, four ultraviolet lamp tubes (5) are arranged on the driving mechanism. The rotating mechanism comprises a fixed plate (27) fixed to one side of the upper end of the purification cabin (18), the upper end of the fixed plate (27) is provided with a second driving motor (17), the output shaft of the second driving motor (17) and the rotating pipe (14) are both fixedly sleeved with a first gear (15), and the two first gears (15) are meshed with each other. The rotating equipment comprises a first driving motor (11) fixed to the upper end of the purification tank (1), the output shaft of the first driving motor (11) is connected with a connecting rod (19), the connecting rod (19) penetrates through the side wall of the purification tank (1) and is fixed to the upper end of the first conical filter screen (20). The two sides of the conical filter cabin (13) are obliquely provided with scrapers (12), and one end of the scraper (12) abuts against the two sides of the second conical filter screen (24). The driving mechanism comprises a protection box (2) fixed to the upper end of the disinfection tank (3), a third driving motor (29) is arranged on the top side of the protection box (2), four rotating shafts are rotatably sleeved on the bottom of the protection box (2), the upper end of the rotating shaft is fixedly provided with a third gear (25), and the four third gears (25) are jointly meshed with an annular gear rack (30), the lower end of the rotating shaft is connected with the ultraviolet lamp tube (5), the lower end of the ultraviolet lamp tube (5) extends into the disinfection tank (3), and the output shaft of the third driving motor (29) is connected to the upper end of one of the third gears (25). The side wall of the disinfection tank (3) is coated with a nano TiO2 film.

2. The sterilization and disinfection equipment for household garbage incineration slag sewage treatment according to claim 1, characterized in that: The aeration equipment comprises a high-pressure gas pump (8) fixed to one side of the purification tank (1), the gas delivery end of the high-pressure gas pump (8) is connected with a gas delivery pipe (9), one end of the gas delivery pipe (9) is connected with a fixing ring (26), the fixing ring (26) is fixed to the outer side wall of the purification cabin (18), a plurality of nozzles (28) are equidistantly connected to the side wall of the fixing ring (26), and the nozzles (28) penetrate through the side wall of the purification cabin (18) and extend into the purification cabin (18).

3. The sterilization and disinfection equipment for household garbage incineration slag sewage treatment according to claim 1, characterized in that: The buffering mechanism comprises connecting plates (23) fixed on both sides of the second conical filter screen (24), elastic dampers (22) connected to the upper and lower ends of the connecting plates (23), mounting plates (21) mounted at one end of the elastic dampers (22), and one end of each mounting plate (21) fixed in one side of the purification box (1).

4. The sterilization and disinfection equipment for household garbage incineration slag sewage treatment according to claim 1, characterized in that: The upper ends of the purification box (1) are provided with input pipes (10) corresponding to the first conical filter screen (20), one end of the disinfection box (3) is connected with an output pipe (4), and the conveying pipe (6) is provided with a valve (7).

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