A treatment cartridge for sewage treatment

Abstract

The utility model relates to a kind of processing cylinder for sewage treatment, including outer cylinder and the inner cylinder being set in outer cylinder;The processing space between outer cylinder and inner cylinder is divided into at least one sewage treatment process area, the internal space of inner cylinder is divided into mutually isolated air purification chamber, sludge chamber and water chamber;Air purification device is installed in air purification chamber, and air purification chamber is provided with pollution gas import and purification gas export;The upper space gas layer of sludge chamber and water chamber and the upper gas layer of processing space are all communicated with the gas inlet of air purification device gas-collecting pipeline.It has beneficial effect, not only avoid the dispersed setting of multiple devices, also reduce the connecting pipeline and accessory facilities between device, reduce construction cost and system complexity.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a treatment cylinder for sewage treatment. Background Technology

[0002] In the field of wastewater treatment, with the acceleration of urbanization and rapid industrial development, the amount of wastewater discharged is increasing day by day, and the requirements for the performance and function of wastewater treatment equipment are also getting higher and higher.

[0003] Biological treatment tanks, as key components in wastewater treatment systems, purify wastewater through the biodegradation of organic matter and are widely used in wastewater treatment plants, industrial wastewater treatment, and domestic sewage treatment. However, in traditional wastewater treatment models, the entire wastewater treatment plant typically consists of multiple independent treatment units, with various wastewater treatment facilities dispersed throughout the plant. Specifically, anaerobic, anoxic, and aerobic biological treatment tanks are often set up independently, resulting in traditional wastewater treatment plants generally requiring large land areas. This not only increases the cost of land use but also presents challenges in acquiring land for expanding wastewater treatment capacity in cities and regions with limited land resources.

[0004] Furthermore, traditional wastewater treatment facilities are not only geographically dispersed but also suffer from low integration of processing functions. They often focus solely on single-function biological wastewater treatment, lacking the comprehensive treatment and storage capabilities for polluting gases, residual sludge, and treated wastewater generated during the wastewater treatment process. Direct emission of polluting gases without effective collection and treatment causes severe odor pollution to the surrounding environment and residents' lives, affecting air quality; improperly treated residual sludge may cause secondary pollution and is not utilized effectively; and if treated wastewater is not properly stored, water resource recycling cannot be achieved, resulting in resource waste. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a treatment cylinder for sewage treatment, which solves the technical problems of the prior art being scattered in layout, occupying a large area and having a single function.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0009] This utility model provides a treatment cylinder for wastewater treatment, including an outer cylinder and an inner cylinder disposed within the outer cylinder; the treatment space between the outer cylinder and the inner cylinder is divided into at least one wastewater treatment process area, and the internal space of the inner cylinder is divided into an air purification chamber, a sludge chamber, and a greywater chamber that are isolated from each other; an air purification device is installed in the air purification chamber, and the air purification chamber is provided with a polluted gas inlet and a purified gas outlet; the upper gas layer of the sludge chamber and the greywater chamber, as well as the upper gas layer of the treatment space, are all connected to the air inlet of the air collection pipe of the air purification device.

[0010] Optionally, the treatment space between the outer cylinder and the inner cylinder is divided into an anaerobic tank, an anoxic tank, and an aerobic tank. The treatment spaces of the anaerobic tank, anoxic tank, and aerobic tank all extend upward to the top plate of the treatment cylinder and downward to the bottom plate of the treatment cylinder. The wastewater treatment process zones and wastewater treatment devices are connected according to the wastewater treatment process. The anaerobic tank is connected to the anoxic tank, and the anoxic tank is connected to the aerobic tank. The wastewater in the treatment cylinder flows through the anaerobic tank, anoxic tank, and aerobic tank along a serpentine path that alternates between vertical and horizontal directions.

[0011] Optionally, the anaerobic tank is divided into at least one sub-zone that extends upward to the top plate of the treatment cylinder and downward to the bottom plate of the treatment cylinder; the anoxic tank is divided into at least one sub-zone that extends upward to the top plate of the treatment cylinder and downward to the bottom plate of the treatment cylinder; and the aerobic tank is divided into at least one sub-zone that extends upward to the top plate of the treatment cylinder and downward to the bottom plate of the treatment cylinder. The sub-zones are interconnected, so that the wastewater in the treatment cylinder flows through each sub-zone along a serpentine path that alternates between vertical and horizontal directions, and the wastewater in the treatment cylinder flows through the anaerobic tank, the anoxic tank, and the aerobic tank.

[0012] Optionally, the treatment space between the outer cylinder and the inner cylinder is further divided into an anaerobic tank. The treatment space of the anaerobic tank extends upward to the top plate of the treatment cylinder and downward to the bottom plate of the treatment cylinder. The aerobic tank is connected to the anaerobic tank. The sewage in the treatment cylinder flows through the anaerobic tank, the anoxic tank, the aerobic tank and the anaerobic tank along a serpentine path that alternates between the upper and lower directions.

[0013] Optionally, the treatment space between the outer cylinder and the inner cylinder is divided into an acidification tank, a neutralization tank, and a Fenton oxidation tank. The treatment spaces of the acidification tank, neutralization tank, and Fenton oxidation tank all extend upward to the top plate of the treatment cylinder and downward to the bottom plate of the treatment cylinder. The various wastewater treatment process areas and wastewater treatment devices are connected according to the wastewater treatment process.

[0014] Optionally, the air purification chamber, sludge chamber, and greywater chamber are arranged axially along the inner cylinder, with the air purification chamber located above the sludge chamber and greywater chamber.

[0015] Optionally, the treatment cylinder also includes a sludge discharge pipe. The sludge chamber is located above the greywater chamber. The sludge chamber is separated from the greywater chamber by a conical bottom plate. There is a gap between the bottom plate of the greywater chamber and the lowest point of the conical bottom plate of the sludge chamber. A sludge outlet is provided at the tip of the conical bottom plate. The inlet of the sludge discharge pipe is connected to the sludge outlet. The outlet of the sludge discharge pipe extends out of the inner cylinder through the side wall of the greywater chamber.

[0016] Optionally, the mud discharge pipe can be a bent pipe.

[0017] Optionally, the inner cylinder also includes a first vent pipe and a second vent pipe; the inlet of the first vent pipe is connected to the upper part of the sludge chamber, and the outlet of the first vent pipe is located outside the inner cylinder and near the polluted gas inlet; the inlet of the second vent pipe is connected to the upper part of the greywater chamber, and the outlet of the second vent pipe is located outside the inner cylinder and near the polluted gas inlet.

[0018] Optionally, the pollutant gas inlet includes a heavily polluted gas inlet for supplying pollutant gas to the biofilter of the air purification device and a lightly polluted gas inlet for supplying pollutant gas to the activated carbon adsorption unit of the air purification device.

[0019] (III) Beneficial Effects

[0020] The beneficial effects of this utility model are:

[0021] This utility model provides a treatment cylinder for wastewater treatment, which achieves synergistic effects between wastewater treatment and gas purification through spatial division and functional integration design. The treatment space between the outer and inner cylinders is divided into at least one wastewater treatment process area. Functional areas can be flexibly divided according to different treatment needs (such as sedimentation, filtration, biochemical reactions, etc.), allowing different treatment processes to be seamlessly integrated within the same device. The air purification chamber integrates an air purification device, collecting waste gases (such as hydrogen sulfide, ammonia, etc.) generated during the treatment process through the polluted gas inlet. After purification, the gases are discharged through the purified gas outlet, meeting emission standards and addressing odor pollution at the source, thus improving the operating environment. The sludge chamber and the greywater chamber store sludge and treated greywater respectively, preventing sludge backmixing from affecting the greywater quality. Simultaneously, the upper gas layer of the sludge chamber is connected to the air purification device, allowing for the simultaneous purification of waste gas generated during sludge fermentation, achieving efficient separation and synergistic treatment of the gas, liquid, and solid phases. Attached Figure Description

[0022] Figure 1 This is a front view schematic diagram of the treatment cylinder used for sewage treatment in Embodiments 1 and 2 of this utility model;

[0023] Figure 2 This is a top view of the first partition separating the outer cylinder in Embodiment 2 of this utility model;

[0024] Figure 3This is a top view schematic diagram of the treatment cylinder used for sewage treatment in Embodiments 1 and 2 of this utility model;

[0025] Figure 4 This is a front view schematic diagram of the treatment cylinder used for sewage treatment in Embodiment 3 of this utility model;

[0026] Figure 5 This is a top view of the treatment cylinder used for sewage treatment in Embodiment 3 of this utility model.

[0027] [Explanation of Labels in the Attached Image]

[0028] 1: Outer cylinder; 11: First partition; 12: Second partition; 13: Third partition; 2: Inner cylinder; 21: Air purification chamber; 211: Polluted gas inlet; 212: Purified gas outlet; 22: Sludge chamber; 23: Greywater chamber; 24: Sludge discharge pipe; 25: Conical bottom plate; 26: First vent pipe; 27: Second vent pipe; 3: Anaerobic tank; 31: Submersible mixer; 4: Anoxic tank; 41: First anoxic tank; 42: Second anoxic tank; 5: Aerobic tank; 51: First aerobic tank; 52: Second aerobic tank; 53: Third aerobic tank; 54: Fourth aerobic tank; 55: Microporous aeration pipe; 6: Facultative anoxic tank. Detailed Implementation

[0029] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0030] Example 1:

[0031] like Figure 1 and Figure 3 As shown, this embodiment provides a treatment cylinder for wastewater treatment, including an outer cylinder 1 and an inner cylinder 2 disposed within the outer cylinder 1; the treatment space between the outer cylinder 1 and the inner cylinder 2 is divided into at least one wastewater treatment process area, and the internal space of the inner cylinder 2 is divided into an air purification chamber 21, a sludge chamber 22, and a greywater chamber 23 that are isolated from each other; an air purification device is installed in the air purification chamber 21, and the air purification chamber 21 is provided with a polluted gas inlet 211 and a purified gas outlet 212; the upper gas layer of the sludge chamber 22 and the greywater chamber 23, as well as the upper gas layer of the treatment space, are all connected to the air inlet of the air collection pipe of the air purification device.

[0032] Specifically, the wastewater treatment tank provided in this embodiment achieves synergistic effects between wastewater treatment and gas purification through a unique spatial division and functional integration design. The treatment space between the outer cylinder 1 and the inner cylinder 2 is divided into at least one wastewater treatment process area. Functional areas can be flexibly divided according to different treatment needs (such as sedimentation, filtration, biochemical reactions, etc.), allowing different treatment processes to be seamlessly connected within the same device. The air purification chamber 21 integrates an air purification device, which collects waste gases (such as hydrogen sulfide, ammonia, etc.) generated during the treatment process through the polluted gas inlet 211. After purification, the waste gases are discharged in compliance with standards through the purified gas outlet 212, solving the odor pollution problem in wastewater treatment at the source and improving the operating environment. The sludge chamber 22 and the greywater chamber 23 store sludge and treated greywater respectively, avoiding sludge backmixing from affecting the greywater quality. At the same time, the upper gas layer of the sludge chamber 22 is connected to the air purification device, which can simultaneously purify the waste gas generated by sludge fermentation, achieving efficient separation and synergistic treatment of the gas, liquid, and solid phases.

[0033] Furthermore, the treatment space between the outer cylinder 1 and the inner cylinder 2 is divided into an anaerobic tank, an anoxic tank, and an aerobic tank. The treatment spaces of the anaerobic tank, anoxic tank, and aerobic tank all extend upwards to the top plate of the treatment cylinder and downwards to the bottom plate of the treatment cylinder. The wastewater treatment process zones and wastewater treatment devices are connected according to the wastewater treatment process. The anaerobic tank is connected to the anoxic tank, and the anoxic tank is connected to the aerobic tank. The wastewater in the treatment cylinder flows through the anaerobic tank, anoxic tank, and aerobic tank along a serpentine path that alternates between vertical and horizontal directions.

[0034] Furthermore, the anaerobic tank is divided into at least one sub-zone that extends upward to the top plate of the treatment cylinder and downward to the bottom plate of the treatment cylinder; the anoxic tank is divided into at least one sub-zone that extends upward to the top plate of the treatment cylinder and downward to the bottom plate of the treatment cylinder; and the aerobic tank is divided into at least one sub-zone that extends upward to the top plate of the treatment cylinder and downward to the bottom plate of the treatment cylinder. The sub-zones are interconnected, so that the wastewater in the treatment cylinder flows through each sub-zone along a serpentine path that alternates between vertical and horizontal directions, and the wastewater in the treatment cylinder flows through the anaerobic tank, the anoxic tank, and the aerobic tank.

[0035] Furthermore, the treatment space between the outer cylinder 1 and the inner cylinder 2 is further divided into an anaerobic tank. The treatment space of the anaerobic tank extends upward to the top plate of the treatment cylinder and downward to the bottom plate of the treatment cylinder. The aerobic tank is connected to the anaerobic tank. The sewage in the treatment cylinder flows through the anaerobic tank, the anoxic tank, the aerobic tank and the anaerobic tank along a serpentine path that alternates between the vertical direction.

[0036] Furthermore, the treatment space between the outer cylinder 1 and the inner cylinder 2 is divided into an acidification tank, a neutralization tank, and a Fenton oxidation tank. The treatment spaces of the acidification tank, neutralization tank, and Fenton oxidation tank all extend upward to the top plate of the treatment cylinder and downward to the bottom plate of the treatment cylinder. The various wastewater treatment process areas and wastewater treatment devices are connected according to the wastewater treatment process.

[0037] Furthermore, the air purification chamber 21, the sludge chamber 22, and the greywater chamber 23 are arranged axially along the inner cylinder 2, with the air purification chamber 21 located above the sludge chamber 22 and the greywater chamber 23.

[0038] Furthermore, the treatment cylinder also includes a sludge discharge pipe 24. The sludge chamber 22 is located above the greywater chamber 23, and is separated from the greywater chamber 23 by a conical bottom plate 25. There is a gap between the bottom plate of the greywater chamber 23 and the lowest point of the conical bottom plate 25 of the sludge chamber 22. A sludge outlet is provided at the tip of the conical bottom plate 25. The inlet of the sludge discharge pipe 24 is connected to the sludge outlet, and the outlet of the sludge discharge pipe 24 extends out of the inner cylinder 2 through the side wall of the greywater chamber 23. Furthermore, the sludge discharge pipe 24 is a bent pipe.

[0039] Furthermore, the inner cylinder 2 also includes a first vent pipe 26 and a second vent pipe 27; the inlet of the first vent pipe 26 is connected to the upper part of the sludge chamber 22, and the outlet of the first vent pipe 26 is located outside the inner cylinder 2 and is set near the polluted gas inlet 211; the inlet of the second vent pipe 27 is connected to the upper part of the greywater chamber 23, and the outlet of the second vent pipe 27 is located outside the inner cylinder 2 and is set near the polluted gas inlet 211.

[0040] Furthermore, the pollutant gas inlet 211 includes a heavily polluted gas inlet for supplying polluted gas to the biofilter of the air purification device and a lightly polluted gas inlet for supplying polluted gas to the activated carbon adsorption unit of the air purification device.

[0041] Example 2:

[0042] like Figure 1 and Figure 2 As shown, this embodiment provides a treatment cylinder for wastewater treatment, including an outer cylinder 1, an inner cylinder 2, and multiple first partitions 11. The inner cylinder 2 is erected at the center of the outer cylinder 1. Multiple first partitions 11 are installed between the inner cylinder 2 and the outer cylinder 1, and the multiple first partitions 11 are arranged circumferentially along the inner cylinder 2 to divide the treatment space between the outer cylinder 1 and the inner cylinder 2 into an anaerobic tank 3, an anoxic tank 4, an aerobic tank 5, and a facultative tank 6. The anaerobic tank 3, anoxic tank 4, aerobic tank 5, and facultative tank 6 all extend upward to the top plate of the treatment cylinder and downward to the bottom plate of the treatment cylinder. The internal space of the inner cylinder 2 is divided into an air purification chamber 21, a sludge chamber 22, and a greywater chamber 23 that are isolated from each other. An air purification device is installed in the air purification chamber 21. The polluted gas outlets of the sludge chamber 22 and the greywater chamber 23, as well as the upper gas layer of the treatment space, are all connected to the air inlet of the air collection pipe of the air purification device.

[0043] Specifically, by erecting the inner cylinder 2 at the center of the outer cylinder 1 and using multiple first baffles 11 arranged circumferentially around the inner cylinder 2, the inner cavity of the outer cylinder 1 is divided into an anaerobic tank 3, an anoxic tank 4, an aerobic tank 5, and an anaerobic tank 6. This compact layout significantly reduces the floor space required. Compared with traditional decentralized wastewater treatment facilities, it effectively saves land resources and reduces land acquisition and usage costs when treating the same scale of wastewater, making it particularly suitable for areas with limited land resources. The inner cylinder 2 integrates an air purification device, a sludge chamber 22, and a greywater chamber 23, with the air collection pipes of the air purification device connected to the outer cylinder 1, the sludge chamber 22, and the greywater chamber 23. This achieves integrated management of multiple functions, including biological wastewater treatment, polluted gas collection and treatment, sludge storage, and greywater storage. It not only avoids the dispersed installation of multiple devices but also reduces connecting pipes and auxiliary facilities between devices, lowering construction costs and system complexity. Simultaneously, it facilitates unified management and maintenance of the device, improving overall operating efficiency. Multiple interconnected zones are arranged sequentially, allowing wastewater to be treated continuously in an anaerobic, anoxic, aerobic, and facultative anaerobic sequence. This meets the biological reaction requirements of wastewater treatment, facilitating the full degradation of organic matter and the removal of pollutants such as nitrogen and phosphorus. Microorganisms in each zone can function optimally under suitable conditions, improving wastewater treatment efficiency and quality, and ensuring that the treated water consistently meets discharge standards. An air purification device collects and treats polluting gases generated from the outer cylinder 1, sludge chamber 22, and greywater chamber 23, effectively preventing direct emissions and reducing odor impact on nearby residents, thus improving environmental quality and meeting environmental protection requirements. The sludge chamber 22 stores residual sludge from the wastewater treatment plant and performs sludge thickening, while also serving as an intermediate step in sludge return. The greywater chamber 23 stores treated wastewater that meets discharge standards and also serves as backwash water for other facilities.

[0044] Furthermore, such as Figures 1 to 3 As shown, the anoxic tank 4 is equipped with at least one second baffle 12, dividing it into a first anoxic tank 41 and a second anoxic tank 42 distributed in the direction of water flow. The aerobic tank 5 is equipped with at least two second baffles 12 and one third baffle 13, with the third baffle 13 located between the two second baffles 12, dividing it into a first aerobic tank 51, a second aerobic tank 52, a third aerobic tank 53, and a fourth aerobic tank 54 distributed in the direction of water flow. This provides a more suitable living environment for microorganisms at different stages, prolongs the residence time of wastewater in each area, and enhances the biological reaction process. For example, in the anoxic tank 4, denitrifying bacteria in different areas can more fully carry out denitrification under different dissolved oxygen and substrate concentrations, improving the total nitrogen removal efficiency. In the aerobic tank 5, multiple sub-tanks help different types of aerobic microorganisms to gradually degrade organic matter in wastewater, further improving the precision and quality of wastewater treatment.

[0045] Furthermore, such as Figures 1 to 3 As shown, the inlet pipe is connected to the upper part of the anaerobic tank 3, and the outlet pipe is connected to the upper part of the facultative tank 6. Water passages are provided in the lower parts of the first baffle 11 and the third baffle 13, and in the upper part of the second baffle 12. The inlet pipe connected to the upper part of the anaerobic tank 3 and the outlet pipe connected to the upper part of the facultative tank 6, together with the water passages in the lower parts of the first baffle 11 and the third baffle 13 and the upper part of the second baffle 12, form an upward and downward flow pattern. Wastewater enters from the upper part of the anaerobic tank 3 and flows slowly downwards under gravity, passing through the water passages in the lower part of the first baffle 11 to enter the next area, achieving thorough mixing of sludge and water and anaerobic reaction. After treatment in subsequent areas such as the aerobic tank 5, it flows out from the upper part of the facultative tank 6. This flow pattern helps maintain the activity of microorganisms and the stability of the reaction environment in each treatment area.

[0046] Furthermore, in this embodiment, the opening ratio of the water passage holes on the first partition 11 and the third partition 13 is 30% to 40%, and the distance between the opening position and the bottom end of the first partition 11 and the third partition 13 is 5 to 15 cm; the opening ratio of the water passage holes on the second partition 12 is 15% to 25%, and the distance between the opening position and the top end of the second partition 12 is 10 to 20 cm. Appropriate opening ratios and positions ensure a reasonable distribution of water flow between different treatment zones, making the residence time of wastewater in each zone meet the requirements of the treatment process, thus optimizing the wastewater treatment process. For example, the larger opening ratio and specific position of the lower part of the first partition 11 and the third partition 13 facilitates the flow of the sludge-water mixture, promoting the exchange of substances between the anaerobic tank 3 and the aerobic tank 5; the smaller opening ratio and position of the upper part of the second partition 12 can control the backflow from the aerobic tank 5 to the anoxic tank 4, meeting the carbon source and dissolved oxygen requirements of the denitrification reaction.

[0047] Furthermore, in this embodiment, the anaerobic tank 3 occupies 15% to 20% of the total treatment space volume; the anoxic tank 4 occupies 10% to 15% of the total treatment space volume; the aerobic tank 5 occupies 50% to 60% of the total treatment space volume; and the facultative tank 6 occupies 10% to 15% of the total treatment space volume. The aerobic tank 5 has a larger volume because aerobic reactions require a large amount of oxygen to decompose organic matter, and sufficient space is conducive to the growth and metabolism of aerobic microorganisms. The volumes of the anaerobic tank 3 and the anoxic tank 4 are reasonably set according to their reaction characteristics and required time to ensure that the sewage has sufficient retention time in each area to carry out the corresponding biological reactions, thereby improving the sewage treatment effect.

[0048] Furthermore, in this embodiment, the first aerobic tank 51 accounts for 25%–30% of the total volume of the aerobic tank 5, the second aerobic tank 52 accounts for 35%–40%, the third aerobic tank 53 accounts for 20%–25%, and the fourth aerobic tank 54 accounts for 10%–15%. The first aerobic tank 51, as the initial area where wastewater enters the aerobic treatment stage, occupies a larger proportion to address the high concentration of organic matter in the wastewater. The second aerobic tank 52, with the largest proportion, undertakes the core task of aerobic wastewater treatment. The third aerobic tank 53, with a moderate proportion, mainly performs fine treatment of the wastewater. The fourth aerobic tank 54, with a relatively small proportion, serves as the last line of defense in aerobic treatment, mainly performing deep purification and water quality stabilization. This synergistic effect fully leverages the advantages of the aerobic treatment process, greatly improving the efficiency and quality of wastewater treatment, enabling the entire wastewater treatment tank to operate stably and efficiently, meeting the treatment needs of wastewater with different qualities.

[0049] Furthermore, in this embodiment, the inner cylinder 2 has a multi-layer composite structure, including an anti-corrosion layer, a reinforcing rib layer, and a heat insulation layer from the outside to the inside. The anti-corrosion layer can effectively prevent the inner cylinder 2 from being eroded by various corrosive substances in the sewage, extending the service life of the device; the reinforcing rib layer enhances the structural strength of the inner cylinder 2, enabling it to withstand the pressure of the internal sewage and the external environment, avoiding deformation and damage; the heat insulation layer can reduce the loss of heat inside the inner cylinder 2, maintain the suitable temperature required for biological reaction inside the tank, which is conducive to the growth and metabolism of microorganisms and improves the sewage treatment effect.

[0050] Furthermore, such as Figure 1 As shown, the sludge chamber 22 has a conical bottom plate 25, and a greywater chamber 23 is formed between the conical bottom plate 25 and the side wall of the inner cylinder. A sludge outlet is located at the lower part of the conical bottom plate 25 near the horizontal bottom plate of the greywater chamber 23, which facilitates the centralized collection of settled sludge for subsequent cleaning and treatment. The conical structure design allows the sludge to naturally slide to the lowest point under gravity, making it easy to extract and transport using sludge pumps and other devices, thus improving the efficiency of sludge treatment. A backwash outlet is provided on the side wall of the greywater chamber 23, which can provide backwash water for other facilities.

[0051] Furthermore, in this embodiment, the air purification device includes a pretreatment unit 71, a biofilter unit 72, and an activated carbon adsorption unit 73; the outlet of the gas collection pipe is connected to the pretreatment unit 71. The heavily polluted gas outlet of the pretreatment unit 71 is connected to the biofilter unit 72, and the lightly polluted gas outlet of the pretreatment unit 71 is connected to the activated carbon adsorption unit 73. The pretreatment unit 71 can remove large particulate impurities and some water-soluble pollutants from the polluted gas, reducing the burden on subsequent treatment units; the biofilter unit 72 uses microorganisms to decompose organic pollutants in the heavily polluted gas, converting them into harmless substances such as carbon dioxide and water; the activated carbon adsorption unit 73 reduces the concentration and odor of the lightly polluted gas through the adsorption effect of activated carbon, so that the emitted gas meets environmental protection standards.

[0052] In this embodiment, the wastewater treatment tank is used as follows: wastewater first flows into the upper part of the anaerobic tank 3 through the inlet pipe. Since the anaerobic tank 3 occupies 15%-20% of the total volume of the outer tank 1, the water flow rate is relatively slow in this area, providing a suitable growth environment for anaerobic microorganisms. The submersible agitator 31 installed at the bottom of the anaerobic tank 3 starts working, continuously stirring to ensure thorough mixing of wastewater, anaerobic microorganisms, and substrate, preventing sedimentation and stratification. Under the action of anaerobic microorganisms, large organic molecules in the wastewater are decomposed into small organic molecules and gases such as methane, completing the initial organic degradation and acidification process. The wastewater, after preliminary treatment in the anaerobic tank 3, flows into the anoxic tank 4 through the water passage opening at the lower part of the first baffle 11. The second baffle 12 installed in the anoxic tank 4 divides it into the first anoxic tank 41 and the second anoxic tank 42. Wastewater flows through these two sub-tanks sequentially. During this process, denitrifying bacteria use the organic matter in the wastewater as a carbon source to reduce nitrate nitrogen to nitrogen gas, achieving the denitrification process. The water passage openings at the top of the second baffle 12 control the flow rate and volume of wastewater flowing from the anoxic tank 4 into the next zone, ensuring sufficient denitrification. After flowing out of the anoxic tank 4, the wastewater enters the aerobic tank 5 through the water passage openings at the bottom of the first baffle 11. The aerobic tank 5 provides sufficient oxygen for aerobic microorganisms. The wastewater flows sequentially through the four sub-tanks. Under suitable dissolved oxygen conditions, aerobic microorganisms decompose the organic matter in the wastewater into carbon dioxide and water, while simultaneously carrying out nitrification, converting ammonia nitrogen into nitrate nitrogen. The bottom of the first baffle 11 and the third baffle 13 are also equipped with water passage openings similar to those from the anaerobic tank 3 to the anoxic tank 4, ensuring reasonable flow of wastewater between zones and ensuring treatment effectiveness. The wastewater, after deep treatment in the aerobic tank 5, flows into the facultative tank 6 through the water passage openings at the bottom of the third baffle 13. In this area, microorganisms can perform both aerobic and anaerobic respiration, further removing residual organic matter and pollutants such as nitrogen and phosphorus from the wastewater. Finally, the treated wastewater that meets the standards flows out of the device through the effluent pipe at the top of the facultative tank 6. Throughout the wastewater treatment process, the air purification unit operates simultaneously. The air collection pipes of the air purification unit are connected to the outer cylinder 1, sludge chamber 22, and greywater chamber 23, collecting the generated polluted gases. The polluted gases first enter the pretreatment unit 71 to remove large particulate impurities and some water-soluble pollutants. Next, they enter the biological filter unit 72, where microorganisms decompose organic pollutants in the heavily polluted gases. Finally, they enter the activated carbon adsorption unit 73, where ultraviolet irradiation further decomposes the remaining non-biodegradable pollutants. The purified gas meets emission standards, effectively preventing pollution of the surrounding environment.

[0053] Example 3:

[0054] This embodiment provides a treatment cylinder for wastewater treatment, which differs from the wastewater treatment cylinder described in Embodiment 1 in that, in this embodiment, as... Figure 4As shown, a submersible mixer 31 is installed at the bottom of the anaerobic tank 3, which can fully mix the sewage, microorganisms, and substrate in the anaerobic tank 3, avoiding sedimentation and stratification, and promoting the anaerobic reaction. The water circulation generated by the mixer allows microorganisms to better contact the organic matter in the sewage, improving the anaerobic reaction rate and treatment effect, and enhancing the ability to decompose organic matter in the sewage. Microporous aeration pipes 55 are laid at the bottom of the aerobic tank 5, which can uniformly aerate the aerobic tank 5, providing sufficient oxygen for aerobic microorganisms. The tiny bubbles generated by the microporous aeration pipes 55 increase the gas-liquid contact area, improve oxygen utilization, and enable aerobic microorganisms to efficiently decompose organic matter in a suitable dissolved oxygen environment, improving the treatment efficiency of the aerobic tank 5 and the quality of sewage treatment.

[0055] In this embodiment, as Figure 5 As shown, the sludge chamber 22 is connected to the horizontal bottom plate of the greywater chamber 23 via a conical bottom plate 25. This facilitates sludge collection and discharge; the settled sludge naturally converges towards the lowest point of the conical bottom plate 25 under gravity. This reduces dead zones for sludge accumulation within the tank, making sludge cleaning more efficient.

[0056] In this embodiment, there is a certain space between the operating liquid level of the sewage in the outer cylinder 1 and the top plate of the outer cylinder 1, which is used for the collection of polluting gas to prevent the polluting gas from being directly discharged into the atmosphere without treatment. The collected gas is transported to an air purification device for treatment through a pipeline.

[0057] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0058] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0059] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0060] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0061] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A treatment cylinder for sewage treatment, characterized in that, It includes an outer cylinder (1) and an inner cylinder (2) disposed in the outer cylinder (1); The processing space between the outer cylinder (1) and the inner cylinder (2) is divided into at least one wastewater treatment process area. The internal space of the inner cylinder (2) is divided into an air purification chamber (21), a sludge chamber (22), and a greywater chamber (23) that are isolated from each other. An air purification device is installed in the air purification chamber (21), and the air purification chamber (21) is provided with a polluted gas inlet (211) and a purified gas outlet (212). The upper gas layer of the sludge chamber (22) and the greywater chamber (23) as well as the upper gas layer of the treatment space are connected to the air inlet of the air collection pipe of the air purification device.

2. The treatment cylinder for wastewater treatment as described in claim 1, characterized in that, The treatment space between the outer cylinder (1) and the inner cylinder (2) is divided into an anaerobic tank (3), an anoxic tank (4) and an aerobic tank (5). The treatment spaces of the anaerobic tank (3), the anoxic tank (4) and the aerobic tank (5) all extend upward to the top plate of the treatment cylinder and downward to the bottom plate of the treatment cylinder. According to the sewage treatment process, the sewage treatment process areas and sewage treatment devices are connected. The anaerobic tank (3) is connected to the anoxic tank (4), and the anoxic tank (4) is connected to the aerobic tank (5). The sewage in the treatment tank flows through the anaerobic tank (3), the anoxic tank (4) and the aerobic tank (5) along a serpentine path that alternates between the upper and lower directions.

3. The treatment cylinder for wastewater treatment as described in claim 2, characterized in that, The anaerobic tank (3) is divided into at least one sub-area that leads upward to the top plate of the treatment cylinder and downward to the bottom plate of the treatment cylinder. The anoxic tank (4) is divided into at least one sub-area that leads upward to the top plate of the treatment cylinder and downward to the bottom plate of the treatment cylinder. The aerobic tank (5) is divided into at least one sub-area that leads upward to the top plate of the treatment cylinder and downward to the bottom plate of the treatment cylinder. The sub-zones are connected so that the wastewater in the treatment tank flows through each sub-zone along a serpentine path that alternates between the vertical and horizontal directions, and the wastewater in the treatment tank flows through the anaerobic tank (3), the anoxic tank (4), and the aerobic tank (5).

4. The treatment cylinder for wastewater treatment as described in claim 2 or 3, characterized in that, The treatment space between the outer cylinder (1) and the inner cylinder (2) is further divided into an anaerobic tank (6). The treatment space of the anaerobic tank (6) extends upward to the top plate of the treatment cylinder and downward to the bottom plate of the treatment cylinder. The aerobic tank (5) is connected to the anaerobic tank (6). The sewage in the treatment cylinder flows through the anaerobic tank (3), the anoxic tank (4), the aerobic tank (5) and the anaerobic tank (6) along a serpentine path that alternates between the upper and lower directions.

5. The treatment tank for wastewater treatment as described in any one of claims 1 to 3, characterized in that, The treatment space between the outer cylinder (1) and the inner cylinder (2) is divided into an acidification tank, a neutralization tank and a Fenton oxidation tank. The treatment spaces of the acidification tank, the neutralization tank and the Fenton oxidation tank all extend upward to the top plate of the treatment cylinder and downward to the bottom plate of the treatment cylinder. The wastewater treatment process areas and the wastewater treatment devices are connected according to the wastewater treatment process.

6. The treatment cylinder for wastewater treatment as described in claim 1, characterized in that, The air purification chamber (21), sludge chamber (22) and greywater chamber (23) are arranged along the axial direction of the inner cylinder, with the air purification chamber (21) located above the sludge chamber (22) and greywater chamber (23).

7. The treatment cylinder for wastewater treatment as described in claim 6, characterized in that, It also includes a sludge discharge pipe (24), a sludge chamber (22) located above a medium water chamber (23), a sludge chamber (22) separated from a medium water chamber (23) by a conical bottom plate (25), a gap between the bottom plate of the medium water chamber (23) and the lowest point of the conical bottom plate (25) of the sludge chamber (22), a sludge outlet is provided at the tip of the conical bottom plate (25), the inlet of the sludge discharge pipe (24) is connected to the sludge outlet, and the outlet of the sludge discharge pipe (24) extends out of the inner cylinder (2) through the side wall of the medium water chamber (23).

8. The treatment cylinder for wastewater treatment as described in claim 7, characterized in that, The mud outlet pipe (24) is a bend.

9. The treatment cylinder for wastewater treatment as described in claim 6, characterized in that, The inner cylinder (2) also includes a first vent pipe (26) and a second vent pipe (27); The inlet of the first vent pipe (26) is connected to the upper part of the sludge chamber (22), and the outlet of the first vent pipe (26) is located outside the inner cylinder (2) and close to the pollutant gas inlet (211); the inlet of the second vent pipe (27) is connected to the upper part of the greywater chamber (23), and the outlet of the second vent pipe (27) is located outside the inner cylinder (2) and close to the pollutant gas inlet (211).

10. The treatment cylinder for wastewater treatment as described in claim 1, characterized in that, The pollutant gas inlet (211) includes a heavily polluted gas inlet for supplying pollutant gas to the biofilter of the air purification device and a lightly polluted gas inlet for supplying pollutant gas to the activated carbon adsorption unit of the air purification device.

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