Sewage treatment tank for upgrading and reconstruction of sewage treatment plant

Abstract

The utility model relates to the technical field of sewage treatment, and discloses an upgrading and reconstruction sewage treatment tank for a sewage treatment plant, which comprises a water inlet pipe, a preliminary filter tank is fixedly connected outside the water inlet pipe, a pretreatment mechanism is arranged inside the preliminary filter tank, and the pretreatment mechanism comprises a support plate I; the top of the first supporting plate is fixedly connected with a braking assembly, the outer side of the braking assembly is fixedly connected with a coarse grid, the outer side of the coarse grid is fixedly connected with a fine grid, and the outer portion of the braking assembly is fixedly connected with a fine grid. According to the sewage treatment tank, a plurality of treatment units such as pretreatment, biological treatment, deep filtration and disinfection are organically combined together to form a relatively complete and compact treatment system, the occupied area is relatively small, and comprehensive removal of various pollutants is realized through effective combination of the multiple treatment units; and the effluent quality is ensured to meet or even be superior to the latest national environmental protection standard.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a wastewater treatment pond for upgrading and transforming a wastewater treatment plant. Background Technology

[0002] With the acceleration of urbanization, the discharge of industrial wastewater and domestic sewage is constantly increasing, and sewage treatment has become an important part of environmental protection. Existing sewage treatment technologies mainly include physical, chemical and biological methods. These methods can treat most pollutants to a certain extent, but there are still problems such as incomplete treatment, high cost and complex operation and maintenance. In recent years, in order to meet stricter environmental protection standards, many sewage treatment plants have carried out upgrading and renovation to improve treatment capacity and effluent quality.

[0003] A search revealed Chinese Patent Publication No. CN207933187U, which discloses a wastewater treatment tank for upgrading and expanding a wastewater treatment plant. The structure includes: a wastewater mixing tank, a mixing tank hanger, a leak-proof sealing cover, an activated carbon filter, a mixing sedimentation tank, hanger steel bars, tank support columns, a mid-range rotating frame, and a long-range rotating frame. Two or more hanger steel bars are welded perpendicularly to each other to form the mixing tank hanger. The edge of the leak-proof sealing cover is inserted into the groove of the activated carbon filter frame. This wastewater mixing tank includes a mixing tank traction rod, a transverse propeller, a longitudinal bearing wheel, and a wastewater mixing tank body. This design incorporates a multi-stage rotating mixing tank for upgrading and expanding a wastewater treatment plant, allowing for integrated wastewater treatment from the periphery to the center. Reagents can be added for rinsing, and activated carbon can be added to adsorb and filter impurities, thus enabling large-volume wastewater treatment quickly and efficiently.

[0004] The aforementioned patent mentions that "the hanger steel bars are provided with two or more perpendicularly welded to form a mixing tank hanger, and the edge of the leak-proof sealing cover is inserted into the groove of the activated carbon filter frame. This utility model of sewage mixing tank is equipped with a mixing tank traction rod, a horizontal propeller, a longitudinal bearing wheel, and a sewage mixing tank body, realizing the upgrading and expansion of sewage treatment plants by adding multi-stage rotating mixing tanks, and treating sewage in an integrated manner from the periphery to the center." However, in actual use, purification is achieved through a single physical filtration method, which has limited effectiveness in treating dissolved pollutants and is difficult to meet high water quality standards. To address the above-mentioned problems, a sewage treatment tank for upgrading sewage treatment plants is proposed to solve these issues. Utility Model Content

[0005] This utility model proposes an adjustable cleaning vehicle, which aims to improve the problem of some existing devices only handling a single task.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A wastewater treatment tank for upgrading a wastewater treatment plant includes an inlet pipe. A preliminary filtration tank is fixedly connected to the outside of the inlet pipe. A pretreatment mechanism is installed inside the preliminary filtration tank. An equalization tank is fixedly connected to the outside of the preliminary filtration tank. A preliminary purification component is installed outside the preliminary purification component. A deep filtration mechanism is installed outside the preliminary purification component. A disinfection component is installed on the outer wall of the deep filtration mechanism. The pretreatment mechanism includes a support plate, which is fixedly connected to the outside of the preliminary filtration tank. A braking component is fixedly connected to the top of the support plate. A coarse screen is fixedly connected to the outside of the braking component. A fine screen is fixedly connected to the outside of the coarse screen. A fine screen is fixedly connected to the outside of the braking component.

[0008] According to the above scheme, sewage flows into the preliminary filtration tank through the inlet pipe. The braking component drives the coarse and fine screens to intercept the sewage. The coarse screen first intercepts larger suspended solids, floating objects and impurities, while the fine screen further intercepts smaller debris to prevent them from entering the subsequent treatment unit. The sewage that has passed the preliminary filtration flows into the equalization tank. The equipment in the equalization tank adjusts the water quality and quantity of the sewage to make it relatively stable, and at the same time inhibits the growth of algae. The sewage flows from the equalization tank into the preliminary purification component. The sewage that has passed through the preliminary purification enters the deep filtration mechanism. It first passes through quartz sand filtration to intercept fine suspended solids and some organic matter, and then passes through activated carbon adsorption to remove organic matter, odor and color, etc. Finally, it undergoes deep filtration by the membrane bioreactor, and then is disinfected by the disinfection component.

[0009] As a further description of the above technical solution:

[0010] The deep filtration mechanism includes a housing, the outer side of which is fixedly connected to the outer side of the preliminary purification component, a second support plate fixedly connected to the inner side of the housing, quartz sand disposed on the top of the second support plate, a pressure gauge fixedly connected to the outer side of the housing, and a filter component fixedly connected to the outer side of the housing.

[0011] Through the above scheme, the wastewater, after being treated by the preliminary purification components, flows into the outer shell of the deep filtration mechanism. After entering the shell, the wastewater first flows through the quartz sand layer at the top of the support plate. Quartz sand has a large specific surface area and abundant pore structure, which intercepts and adsorbs fine suspended solids and colloids in the wastewater, further purifying the water quality. During the filtration process, the pressure gauge on the outside of the shell monitors the pressure changes inside the shell in real time. When the pressure inside the shell increases, the staff can understand the filtration status in a timely manner by reading the pressure gauge and determine whether maintenance operations such as cleaning or replacing the quartz sand layer are required to ensure the filtration effect and efficiency.

[0012] As a further description of the above technical solution:

[0013] The braking assembly includes a cylinder, which is externally fixedly connected to the top of the support plate, and a sliding hook is fixedly connected to the drive end of the support plate.

[0014] With the above scheme, before the sewage treatment begins, the cylinder is fixed on the top of the support plate, the sliding hook is connected to the drive end of the cylinder, and it is also firmly connected to the coarse screen and the fine screen. The entire braking assembly is in standby mode, ready to start at any time to complete the preliminary filtration of sewage, preventing these impurities from entering the subsequent treatment unit and avoiding equipment blockage and damage.

[0015] As a further description of the above technical solution:

[0016] The sliding hook is externally fixedly connected to the outside of the coarse grid, and externally fixedly connected to the inside of the fine grid. An ultrasonic algae removal device is fixedly connected inside the regulating tank.

[0017] With the above scheme, when sewage flows into the primary filtration tank through the inlet pipe, the cylinder drive end moves the sliding hook. Since the sliding hook is fixedly connected to the outside of the coarse screen and the inside of the fine screen, the movement of the sliding hook will synchronously drive the coarse screen and the fine screen to the appropriate filtration position. In the equalization tank, the fixedly connected ultrasonic algae removal device starts to work. This device emits ultrasonic waves and uses the cavitation effect and mechanical effect of ultrasonic waves to destroy the structure and physiological function of algal cells, inhibit the growth and reproduction of algae, and prevent the algae from multiplying in large quantities in the subsequent treatment unit, thus affecting the normal operation of the entire sewage treatment system.

[0018] As a further description of the above technical solution:

[0019] The filter assembly includes a protective shell, the outside of which is fixedly connected to the outside of the pressure gauge, activated carbon is fixedly connected inside the protective shell, and a secondary filtration tank is fixedly connected outside the protective shell.

[0020] Through the above scheme, after the wastewater enters the protective shell, it comes into full contact with the activated carbon fixedly connected inside. The activated carbon has a rich microporous structure and a huge specific surface area, which can effectively remove various pollutants in the wastewater through physical and chemical adsorption. After being purified by activated carbon adsorption, the wastewater flows out of the protective shell and enters a secondary filtration tank fixedly connected to its exterior. The secondary filtration tank can use a membrane bioreactor to further filter the wastewater according to actual process requirements, further intercepting microorganisms, fine suspended solids, and large molecular pollutants in the wastewater, ensuring that the final effluent quality meets higher standards and satisfies the discharge requirements after the wastewater treatment plant's upgrade and renovation.

[0021] As a further description of the above technical solution:

[0022] A membrane bioreactor is fixedly connected inside the secondary filtration tank, and a conduit is fixedly connected to the top of the membrane bioreactor. The outer side of the conduit is fixedly connected to the outside of the disinfection assembly.

[0023] Through the above scheme, the membrane bioreactor begins to function in the secondary filtration tank. Utilizing the sieving characteristics of the membrane and driven by pressure difference, it performs fine filtration of wastewater. The membrane's extremely small pore size can trap microorganisms, preventing them from entering subsequent stages and avoiding secondary pollution of the water body. The treated water, after being deeply purified by the membrane bioreactor, is discharged through a conduit fixedly connected to its top. The conduit stably transports the treated water to the disinfection unit.

[0024] As a further description of the above technical solution:

[0025] The preliminary purification component includes an anaerobic tank, which is fixedly connected to the outside of the preliminary filtration tank. An anoxic tank is fixedly connected to the outside of the anaerobic tank. An aerobic tank is fixedly connected to the outside of the anoxic tank. An aeration fan is fixedly connected to the inside of the aerobic tank. Biological packing material is fixedly connected to the inside of the aerobic tank. The outer wall of the aerobic tank is fixedly connected to the outside of the deep filtration mechanism.

[0026] Through the above scheme, after flowing out of the primary filtration tank, the wastewater first enters the anaerobic tank. In the anaerobic environment, anaerobic microorganisms become active, using the organic matter in the wastewater as a substrate. Through a series of complex biochemical reactions, they decompose large organic molecules into smaller organic acids, alcohols, and other substances, achieving preliminary degradation of some organic matter. The wastewater treated in the anaerobic tank then flows into the anoxic tank. At this time, anoxic conditions are created in the tank, and denitrifying bacteria multiply rapidly. These bacteria use the organic matter in the wastewater as a carbon source to reduce the nitrate nitrogen and nitrite nitrogen previously generated in the wastewater into nitrogen gas, which is released into the atmosphere, thereby achieving denitrification. This effectively reduces the nitrogen content in the wastewater, prevents eutrophication, and meets higher wastewater treatment and discharge standards. After the wastewater enters the aerobic tank from the anoxic tank, the aeration blowers inside the aerobic tank immediately start, blowing a large amount of air into the tank, causing the dissolved oxygen content in the tank to rise rapidly. This provides sufficient oxygen for the aerobic microorganisms, ensuring their metabolic activities and further enhancing the wastewater purification effect.

[0027] As a further description of the above technical solution:

[0028] The disinfection assembly includes a disinfection tank, with the outside of the conduit fixedly connected to the outside of the disinfection tank, an ultraviolet irradiation lamp fixedly connected to the inside of the disinfection tank, and a chlorine dioxide generator fixedly connected to the inside of the disinfection tank.

[0029] Through the above scheme, the ultraviolet irradiation lamps in the disinfection tank are activated, emitting ultraviolet rays within a specific wavelength range. When the light penetrates the sewage, the energy in the ultraviolet rays is absorbed by the nucleic acids in the microbial cells, causing damage such as the breakage and cross-linking of nucleic acid molecular chains. This can kill a large number of common pathogenic microorganisms in a short time. At the same time, the chlorine dioxide generator starts working, producing highly oxidizing chlorine dioxide gas. The chlorine dioxide dissolves and diffuses rapidly in the water. With its strong oxidizing properties, it attacks the cell walls, cell membranes, and intracellular enzyme systems of pathogens such as bacteria and viruses, further destroying their structure and function. It also plays a supplementary killing role for microorganisms that are difficult to completely kill with ultraviolet rays, such as some ultraviolet-resistant Bacillus. Moreover, chlorine dioxide does not produce harmful halogenated organic compounds during the disinfection process like chlorine gas, resulting in higher safety of the disinfected water.

[0030] This utility model has the following beneficial effects:

[0031] 1. In this utility model, the sewage treatment tank organically combines multiple treatment units such as pretreatment, biological treatment, deep filtration and disinfection to form a relatively complete and compact treatment system. It occupies a relatively small area and is suitable for upgrading sewage treatment plants in places with limited land resources, thereby improving the utilization efficiency of land resources. The effective combination of multiple treatment units achieves comprehensive removal of various pollutants, ensuring that the effluent quality meets or even exceeds the latest national environmental protection standards. The modular design makes the equipment easy to install, convenient to operate and maintain, and highly adaptable, suitable for sewage treatment plants of different types and sizes.

[0032] 2. This utility model employs a biological treatment process combining anaerobic, anoxic, and aerobic methods. Under different environmental conditions, different types of microorganisms are used to degrade and remove pollutants such as organic matter, ammonia nitrogen, and phosphorus from wastewater. Anaerobic treatment decomposes complex organic matter, reducing the load on subsequent treatments; anoxic treatment removes nitrogen; and aerobic treatment further decomposes organic matter and oxidizes ammonia nitrogen. This combined process can more comprehensively remove multiple pollutants, improve the effectiveness and quality of wastewater treatment, increase wastewater treatment efficiency, shorten treatment time, reduce energy consumption and chemical usage, and lower operating costs. Attached Figure Description

[0033] Figure 1 This is a three-dimensional schematic diagram of a sewage treatment pond for upgrading and renovating a sewage treatment plant, as proposed in this utility model.

[0034] Figure 2 This is a schematic diagram of the structure of an ultrasonic algae removal device for upgrading and renovating a sewage treatment pond in a sewage treatment plant, as proposed in this utility model.

[0035] Figure 3This utility model provides a schematic diagram of the structure of a pressure gauge for upgrading and renovating a sewage treatment pond in a sewage treatment plant.

[0036] Figure 4 This utility model provides a schematic diagram of the structure of quartz sand used in the upgrading and renovation of a sewage treatment pond in a sewage treatment plant.

[0037] Figure 5 This is a schematic diagram of the structure of activated carbon for upgrading and renovating sewage treatment ponds in sewage treatment plants, as proposed in this utility model.

[0038] Legend:

[0039] 1. Inlet pipe; 2. Pretreatment mechanism; 201. Support plate one; 202. Coarse screen; 203. Sliding hook; 204. Fine screen; 205. Ultrasonic algae removal device; 207. Cylinder; 3. Equalization tank; 4. Anaerobic tank; 5. Deep filtration mechanism; 501. Outer shell; 502. Quartz sand; 503. Support plate two; 504. Pressure gauge; 505. Protective shell; 506. Activated carbon; 507. Secondary filtration tank; 508. Membrane bioreactor; 6. Ultraviolet irradiation lamp; 7. Disinfection tank; 8. Conduit; 9. Chlorine dioxide generator; 10. Anoxic tank; 11. Preliminary filtration tank; 12. Aeration fan; 13. Biological packing material; 14. Aerobic tank. Detailed Implementation

[0040] 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.

[0041] Reference Figures 1 to 3 The present invention provides an embodiment of a wastewater treatment tank for upgrading a wastewater treatment plant, including an inlet pipe 1. The inlet pipe 1 is made of stainless steel, which is highly corrosion-resistant and has a long service life. A preliminary filter tank 11 is fixedly connected to the outside of the inlet pipe 1. A pretreatment mechanism 2 is set inside the preliminary filter tank 11. The preliminary filter tank 11 is used to provide space for the pretreatment mechanism 2. An equalization tank 3 is fixedly connected to the outside of the preliminary filter tank 11. A preliminary purification component is set outside the preliminary purification component. A deep filtration mechanism 5 is set outside the preliminary purification component. A disinfection component is set on the outer wall of the deep filtration mechanism 5.

[0042] The pretreatment unit 2 includes a support plate 201, which is fixedly connected to the outside of the primary filter tank 11. A braking assembly is fixedly connected to the top of the support plate 201. The support plate 201 is used to provide an installation position for the braking assembly. A coarse screen 202 is fixedly connected to the outside of the braking assembly. A fine screen 204 is fixedly connected to the outside of the coarse screen 202 and the outside of the braking assembly.

[0043] The braking assembly includes a cylinder 207, which is externally fixedly connected to the top of a support plate 201. A sliding hook 203 is fixedly connected to the drive end of the support plate 201. The cylinder 207 is used to push the sliding hook 203. The sliding hook 203 is externally fixedly connected to the outside of the coarse screen 202 and the inside of the fine screen 204. The sliding hook 203 is tightly connected to the coarse screen 202 and the fine screen 204, driving them to work together to ensure that the screens operate stably during the sewage filtration process, without shaking or displacement deviation, thus improving the filtration effect. The coarse screen 202 and the fine screen 204 are made of stainless steel mesh structure, which is easy to clean and replace. An ultrasonic algae removal device 205 is fixedly connected inside the regulating tank 3. The regulating tank 3 is equipped with a liquid level sensor to automatically adjust the inlet and outlet water flow rates to ensure uniform water supply. The ultrasonic algae removal device 205 is used to remove blue-green algae and other phytoplankton from the water to prevent clogging of subsequent treatment facilities.

[0044] Specifically, upon arrival at the primary filtration tank 11, the pretreatment mechanism 2 immediately activates. The cylinder 207 in the braking assembly pushes the sliding hook 203 up and down, ensuring it is tightly attached to the outside of the coarse screen 202 and the inside of the fine screen 204. Moving to the appropriate filtration position, the pre-filtered wastewater flows into the regulating tank 3. A level sensor inside monitors water level changes in real time and automatically adjusts the inlet and outlet flow rates according to a preset program, ensuring a uniform water supply to subsequent treatment units and preventing excessive water volume fluctuations from impacting the treatment system. Simultaneously, the ultrasonic algae removal device 205 activates, emitting ultrasonic waves of a specific frequency. Utilizing the cavitation and mechanical effects of ultrasound, it destroys the cell structure of blue-green algae and other phytoplankton in the water, inhibiting their growth and reproduction. Excessive algae growth not only increases the organic matter content of the water and affects dissolved oxygen levels but also adheres to the surfaces of subsequent treatment equipment.

[0045] Reference Figures 3 to 5The deep filtration mechanism 5 includes a housing 501. The outer side of the housing 501 is fixedly connected to the outer side of the preliminary purification component. The inner side of the housing 501 is fixedly connected to a support plate 503. Quartz sand 502 is disposed on the top of the support plate 503. A pressure gauge 504 is fixedly connected to the outer side of the housing 501. A filter component is fixedly connected to the outer side of the housing 501. The housing 501 is used to provide a protective barrier for the internal support plate 503, quartz sand 502 and connected filter component. The support plate 503 is used to ensure that the quartz sand 502 is evenly distributed, so that the sewage flows evenly and the filtration performance of the quartz sand 502 is fully utilized. The quartz sand 502, as a filter material, has high filtration accuracy and is easy to clean.

[0046] The filtration assembly includes a protective shell 505, which is fixedly connected to the outside of a pressure gauge 504. Activated carbon 506 is fixedly connected inside the protective shell 505. The pressure gauge 504 is used to monitor the pressure changes inside the shell 501 in real time. The protective shell 505 is protected from breakage and failure due to external mechanical impacts, humid environment corrosion, etc., ensuring that the activated carbon 506 efficiently adsorbs pollutants in wastewater in a relatively stable environment. A secondary filtration tank 507 is fixedly connected to the outside of the protective shell 505. A membrane bioreactor 508 is fixedly connected inside the secondary filtration tank 507. The secondary filtration tank 507 provides a dedicated working space for the membrane bioreactor 508. The membrane bioreactor 508 improves the sludge-water separation efficiency and reduces sludge production through membrane separation. A conduit 8 is fixedly connected to the top of the membrane bioreactor 508, and the outside of the conduit 8 is fixedly connected to the outside of a disinfection assembly.

[0047] The preliminary purification components include an anaerobic tank 4, which creates an anaerobic environment to allow anaerobic microorganisms to thrive under anaerobic conditions. The anaerobic tank 4 is fixedly connected to the preliminary filtration tank 11. An aeration blower 12 continuously blows air into the tank to ensure a sufficient supply of dissolved oxygen required for the growth of aerobic microorganisms. An anoxic tank 10 is fixedly connected to the outside of the anaerobic tank 4. The anoxic tank 10 is used to create an anaerobic atmosphere for denitrifying bacteria. An aerobic tank 14 is fixedly connected to the outside of the anoxic tank 10. An aeration blower 12 is fixedly connected to the inside of the aerobic tank 14. A biological packing material 13 is fixedly connected to the inside of the aerobic tank 14. The biological packing material 13 is used to provide a large area of ​​attachment and growth sites for aerobic microorganisms, increasing the number and activity of microorganisms. The outer wall of the aerobic tank 14 is fixedly connected to the outside of the deep filtration mechanism 5.

[0048] The disinfection assembly includes a disinfection tank 7 and a conduit 8 for introducing filtered liquid into the disinfection tank 7. The disinfection tank 7 provides a working area for the ultraviolet lamp 6 and the chlorine dioxide generator 9. The conduit 8 is fixedly connected to the outside of the disinfection tank 7. The ultraviolet lamp 6 is fixedly connected inside the disinfection tank 7. The ultraviolet lamp 6 provides a working area for the ultraviolet lamp 6 and the chlorine dioxide generator 9. The chlorine dioxide generator 9 is fixedly connected inside the disinfection tank 7 to generate highly oxidizing chlorine dioxide gas, thus generating highly efficient chlorine dioxide gas for disinfection, which is more environmentally friendly than traditional sodium hypochlorite.

[0049] Specifically, the wastewater flowing out of the equalization tank 3 enters the anaerobic tank 4. In the anaerobic environment, anaerobic microorganisms become active, converting the wastewater into small-molecule organic acids, alcohols, etc., reducing the organic load of the wastewater. Then, the wastewater flows into the anoxic tank 10, where denitrifying bacteria use the organic matter in the wastewater as a carbon source to reduce nitrate nitrogen and nitrite nitrogen into nitrogen gas, achieving denitrification and preventing eutrophication. Subsequently, the wastewater enters the aerobic tank 14, where the aeration blower 12 blows air into the tank to provide sufficient dissolved oxygen. Aerobic microorganisms multiply rapidly, and the biological packing material 13 provides them with attachment sites. The microorganisms completely oxidize and decompose the organic matter in the wastewater into carbon dioxide and water, and ammonia nitrogen is also oxidized into nitrate nitrogen, further purifying the wastewater. The pre-purified wastewater enters the outer shell 501 of the deep filtration mechanism 5, first flowing through the support plate 2. Quartz sand 502 on top of 503 utilizes its high porosity and large specific surface area to trap fine suspended solids and colloids in the wastewater, reducing turbidity. It is also easy to clean and can be reused. The wastewater then enters the protective shell 505, where activated carbon 506, with its rich microporous structure, adsorbs organic matter, odors, and pigments. The water then flows into the secondary filtration tank 507, where the membrane bioreactor 508 plays a crucial role. Through membrane separation technology, it efficiently traps microorganisms and large molecular pollutants, achieving sludge-water separation and producing clear treated water while reducing sludge production. The treated water flows through the top conduit 8 into the disinfection tank 7. In the disinfection tank 7, ultraviolet lamps 6 emit specific wavelengths of ultraviolet light that penetrate bacteria, viruses, and other pathogens, destroying their nucleic acid structure and rendering them inactive. Simultaneously, the chlorine dioxide generator 9 produces highly oxidizing chlorine dioxide gas, further killing ultraviolet-resistant microorganisms. This dual disinfection ensures the safety of the effluent, meeting discharge standards or reuse requirements. The disinfected water can then be discharged or reused. The entire process involves close coordination among all stages to gradually remove various pollutants from the wastewater, thereby achieving the goal of upgrading and transforming the wastewater treatment plant.

[0050] Working principle: Wastewater first enters the pretreatment unit through the inlet pipe 1. The cylinder 207 drives the sliding hook 203, which in turn drives the coarse screen 202 and the fine screen 204 to intercept the wastewater. The coarse screen 202 first intercepts larger suspended solids, floating objects and impurities in the wastewater, such as branches and plastic bottles. Then the fine screen 204 further intercepts smaller debris, preventing these substances from entering the subsequent treatment unit and avoiding equipment blockage and damage. The wastewater that has been pre-filtered flows into the equalization tank 3. The ultrasonic algae removal device 205 in the equalization tank 3 is activated to inhibit algae growth and prevent algae from multiplying in large quantities in the subsequent treatment unit. At the same time, the equalization tank 3 can regulate the water quality and quantity of the wastewater, so that the water quality and quantity of the wastewater entering the subsequent treatment unit are relatively stable, reducing the load impact on the subsequent treatment unit.

[0051] Next, the wastewater flows from the equalization tank 3 into the anaerobic tank 4. Under anaerobic conditions, anaerobic microorganisms decompose and metabolize the organic matter in the wastewater, breaking down complex organic matter into simpler organic matter, such as organic acids and alcohols, while releasing a small amount of energy. Anaerobic treatment can remove some organic matter and reduce the load on subsequent treatment units. The wastewater after anaerobic treatment enters the anoxic tank 10. Under anoxic conditions, denitrifying bacteria use the organic matter in the wastewater as a carbon source to reduce nitrate nitrogen and nitrite nitrogen into nitrogen gas, achieving the purpose of denitrification. The wastewater flows from the anoxic tank 10 into the aerobic tank 14. The aeration blower 12 in the aerobic tank 14 introduces air into the wastewater, providing sufficient oxygen so that aerobic microorganisms can multiply in large quantities and decompose the organic matter in the wastewater. The biological packing material 13 provides a place for microorganisms to attach and grow, increasing the number and activity of microorganisms and improving the decomposition efficiency of organic matter. Aerobic treatment can further decompose the organic matter in the wastewater into carbon dioxide and water, while oxidizing ammonia nitrogen into nitrate nitrogen, thereby carrying out biodegradation under different conditions and removing organic matter, ammonia nitrogen, and phosphorus.

[0052] Wastewater enters and is filtered through quartz sand 502 at the top of support plate 503. Quartz sand 502 has a large specific surface area and porosity, which can intercept fine suspended solids, colloids and some organic matter in the wastewater, further reducing the turbidity of the wastewater. After being filtered through quartz sand 502, the wastewater enters the protective shell 505. Activated carbon 506 in the protective shell 505 adsorbs and removes organic matter, odors and colors in the wastewater. Activated carbon 506 has a rich microporous structure and a huge specific surface area, which can effectively adsorb a variety of pollutants in the wastewater. Then, the wastewater adsorbed by activated carbon 506 enters the secondary filtration tank 507. The membrane bioreactor 508 in the secondary filtration tank 507 performs deep filtration of the wastewater. The membrane bioreactor 508 uses the sieving effect of the membrane to separate activated sludge and treated water, intercepting almost all microorganisms and macromolecular pollutants, so that the effluent water quality reaches a higher standard.

[0053] Wastewater filtered by membrane bioreactor 508 enters disinfection tank 7 through conduit 8. Ultraviolet lamps 6 in disinfection tank 7 emit ultraviolet light to disinfect and sterilize the wastewater, rendering it inactive and thus achieving the purpose of disinfection. At the same time, chlorine dioxide generator 9 in disinfection tank 7 produces chlorine dioxide, a strong oxidant that can further kill bacteria, viruses and other pathogens in wastewater, ensuring that the effluent quality meets the discharge standards.

[0054] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sewage treatment plant upgrading sewage treatment tank, comprising an inlet pipe (1), characterized in that: The outside of the water inlet pipe (1) is fixedly connected with a preliminary filtering pool (11), the inside of the preliminary filtering pool (11) is provided with a pretreatment mechanism (2), the outside of the preliminary filtering pool (11) is fixedly connected with an adjusting pool (3), the outside of the preliminary filtering pool (11) is provided with a preliminary purification assembly, the outside of the preliminary purification assembly is provided with a deep filtering mechanism (5), and the outer wall of the deep filtering mechanism (5) is provided with a disinfection assembly; The preliminary filtering pool (11) is provided with a support plate one (201), the outside of the support plate one (201) is fixedly connected to the outside of the preliminary filtering pool (11), the top of the support plate one (201) is fixedly connected with a brake assembly, the outside of the brake assembly is fixedly connected with a coarse grid (202), the outside of the coarse grid (202) is fixedly connected with a fine grid (204).

2. The sewage treatment plant upgrading sewage treatment tank according to claim 1, characterized in that: The deep filtering mechanism (5) comprises an outer shell (501), the outside of the outer shell (501) is fixedly connected to the outside of the preliminary purification assembly, the inside of the outer shell (501) is fixedly connected with a support plate two (503), the top of the support plate two (503) is provided with quartz sand (502), the outside of the outer shell (501) is fixedly connected with an air pressure gauge (504), and the outside of the outer shell (501) is fixedly connected with a filtering assembly.

3. The sewage treatment plant upgrading sewage treatment tank according to claim 1, characterized in that: The brake assembly comprises a gas cylinder (207), the outside of the gas cylinder (207) is fixedly connected to the top of the support plate one (201), and the driving end of the support plate one (201) is fixedly connected with a sliding hook (203).

4. The sewage treatment plant upgrading sewage treatment tank according to claim 3, characterized in that: The outside of the sliding hook (203) is fixedly connected to the outside of the coarse grid (202), the outside of the sliding hook (203) is fixedly connected to the inside of the fine grid (204), and the inside of the adjusting pool (3) is fixedly connected with an ultrasonic algae removal device (205).

5. The wastewater treatment plant upgrade lagoon according to claim 2, wherein: The filtering assembly comprises a protective shell (505), the outside of the protective shell (505) is fixedly connected to the outside of the air pressure gauge (504), the inside of the protective shell (505) is fixedly connected with activated carbon (506), and the outside of the protective shell (505) is fixedly connected with a re-filtering pool (507).

6. The wastewater treatment plant upgrade lagoon of claim 5, wherein: The inside of the re-filtering pool (507) is fixedly connected with a membrane bioreactor (508), the top of the membrane bioreactor (508) is fixedly connected with a conduit (8), and the outside of the conduit (8) is fixedly connected to the outside of the disinfection assembly.

7. The wastewater treatment plant upgrade lagoons of claim 1, wherein: The preliminary purification assembly comprises an anaerobic pool (4), the outside of the anaerobic pool (4) is fixedly connected to the preliminary filtering pool (11), the outside of the anaerobic pool (4) is fixedly connected with an anoxic pool (10), the outside of the anoxic pool (10) is fixedly connected with an aerobic pool (14), the inside of the aerobic pool (14) is fixedly connected with an aeration fan (12), the inside of the aerobic pool (14) is fixedly connected with biological filler (13), and the outer wall of the aerobic pool (14) is fixedly connected to the outside of the deep filtering mechanism (5).

8. The wastewater treatment plant upgrade lagoon according to claim 6, wherein: The disinfection assembly comprises a disinfection tank (7), the outside of the catheter (8) is fixedly connected outside the disinfection tank (7), the inside of the disinfection tank (7) is fixedly connected with an ultraviolet irradiation lamp (6), and the inside of the disinfection tank (7) is fixedly connected with a chlorine dioxide generator (9).

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