Physicochemical cylinder and sewage treatment device for sewage treatment

Abstract

The utility model relates to a kind of for the physicochemical cylinder and sewage treatment device of sewage treatment, wherein the physicochemical cylinder includes outer cylinder body and the cylindrical connector in the axis position of outer cylinder body, several partitions are connected between connector and outer cylinder body, the inside processing space of outer cylinder body is separated into acidification pond, fenton oxidation pond and neutralization pond;Or, the physicochemical cylinder includes outer cylinder body and inner cylinder body, the processing space between outer cylinder body and inner cylinder body is separated by partition, and acidification pond and neutralization pond are separated, the processing space of inner cylinder is used as fenton oxidation pond, or the inside processing space of inner cylinder body is separated by partition, and acidification pond and neutralization pond are separated, the processing space between outer cylinder body and inner cylinder body is used as fenton oxidation pond;Acidification pond is communicated with fenton oxidation pond, and fenton oxidation pond is communicated with neutralization pond. Reduce construction land, improve the space utilization in horizontal plane.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a physical and chemical cylinder and a wastewater treatment device for wastewater 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] Wastewater or sewage generated during industrial production contains varying levels of impurities, suspended solids, high concentrations of recalcitrant organic matter, and some biotoxic heavy metals. Biological treatment of wastewater requires high-quality influent; recalcitrant organic matter or biotoxic substances entering the biological treatment system can cause its collapse. Therefore, industrial wastewater must undergo pretreatment before entering the biological treatment system to meet the influent requirements. The pretreatment process generally includes: passing the wastewater through a screen and grit chamber to remove large particles and inorganic matter; then, flocculation and sedimentation to remove heavy metals; and finally, acidification, Fenton oxidation, and neutralization to decompose high concentrations of recalcitrant organic matter.

[0004] However, in traditional wastewater treatment models, wastewater treatment plants typically consist of multiple independent treatment units, with various wastewater treatment facilities scattered throughout the plant. For industrial wastewater pretreatment, acidification tanks, Fenton oxidation tanks, and neutralization 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.

[0005] Therefore, there is an urgent need to provide a physical-chemical cylinder and a wastewater treatment device for wastewater treatment. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a physical and chemical cylinder and a sewage treatment device for sewage treatment, which reduces the construction land and improves the space utilization rate in the horizontal plane.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0010] In a first aspect, this utility model provides a physicochemical treatment cylinder for wastewater treatment, comprising an outer cylinder and a cylindrical connector located on the axis of the outer cylinder. Several partitions are connected between the connector and the outer cylinder, dividing the internal treatment space of the outer cylinder into an acidification tank, a Fenton oxidation tank, and a neutralization tank. The diameter of the connector is 200-500 mm. Alternatively, the physicochemical treatment cylinder comprises an outer cylinder and an inner cylinder, with partitions separating the treatment space between the outer and inner cylinders to form an acidification tank and a neutralization tank, the treatment space of the inner cylinder serving as a Fenton oxidation tank. Alternatively, the physicochemical treatment cylinder comprises an outer cylinder and an inner cylinder, with partitions separating the internal treatment space of the inner cylinder to form an acidification tank and a neutralization tank, the treatment space between the outer and inner cylinders serving as a Fenton oxidation tank. The treatment spaces of the acidification tank, the Fenton oxidation tank, and the neutralization tank all extend upward to the top plate of the physicochemical treatment cylinder and downward to the bottom plate of the physicochemical treatment cylinder. The acidification tank is connected to the Fenton oxidation tank, and the Fenton oxidation tank is connected to the neutralization tank.

[0011] Optionally, the connector is a hollow column.

[0012] Optionally, the wastewater in the physical and chemical treatment tank flows through the acidification tank, the Fenton oxidation tank, and the neutralization tank along a serpentine path that alternates between the vertical and horizontal directions. The Fenton oxidation tank is divided into at least one first sub-zone that extends upward to the top plate of the physical and chemical treatment tank and downward to the bottom plate of the physical and chemical treatment tank. The first sub-zones are connected to each other, so that the wastewater in the Fenton oxidation tank flows through each first sub-zone along a serpentine path that alternates between the vertical and horizontal directions.

[0013] Optionally, the acidification tank is divided into at least one second sub-zone extending upward to the top plate of the physicochemical cylinder and downward to the bottom plate of the physicochemical cylinder. The second sub-zones are interconnected, so that the wastewater in the acidification tank flows through each second sub-zone along an alternating serpentine path in the vertical direction. The neutralization tank is divided into at least one third sub-zone extending upward to the top plate of the physicochemical cylinder and downward to the bottom plate of the physicochemical cylinder. The third sub-zones are interconnected, so that the wastewater in the neutralization tank flows through each third sub-zone along an alternating serpentine path in the vertical direction.

[0014] Optionally, a plurality of baffles are connected between the connector and the outer cylinder to separate the Fenton oxidation tank into at least one first sub-region; a plurality of baffles are connected between the connector and the outer cylinder to separate the acidification tank into at least one second sub-region; and a plurality of baffles are connected between the connector and the outer cylinder to separate the neutralization tank into at least one third sub-region.

[0015] Optionally, the volume ratio of the acidification tank, the Fenton oxidation tank, and the neutralization tank is 1:(1-3):(0.2-1).

[0016] Optionally, the physicochemical tank for wastewater treatment also includes an acid dosing pipe, a wastewater pipe, a pipe mixer, and a stirring device; the acid dosing pipe and the wastewater pipe are both connected to the inlet of the pipe mixer, the outlet of the pipe mixer is connected to the inlet of the acidification tank, and the stirring device is installed inside the acidification tank.

[0017] Optionally, the physicochemical cylinder for wastewater treatment also includes a catalyst dosing pipe, an oxidant dosing pipe, and a stirring device; the catalyst dosing pipe is connected to the first sub-zone through which the wastewater flows in the Fenton oxidation tank, the oxidant dosing pipe is connected to the second sub-zone through which the wastewater flows in the Fenton oxidation tank, and the stirring device is installed in each sub-zone.

[0018] Optionally, the physicochemical tank for wastewater treatment also includes an alkali dosing pipe and a stirring device; the alkali dosing pipe is connected to the inlet of the neutralization tank, and the stirring device is installed inside the neutralization tank.

[0019] Secondly, this utility model provides a wastewater treatment device, including an air purifier and a physical-chemical cylinder as described above. The air purifier is installed above the top plate of the physical-chemical cylinder and has a polluted gas inlet and a purified gas outlet. The upper gas layers of the acidification tank, Fenton oxidation tank and neutralization tank are all connected to the polluted gas inlet.

[0020] (III) Beneficial Effects

[0021] The beneficial effects of this utility model are:

[0022] The physical and chemical treatment cylinder provided by this utility model integrates acidification treatment, Fenton oxidation treatment and neutralization treatment of sewage into one physical and chemical treatment cylinder, shortens the pipeline path, makes full use of the internal space of the physical and chemical treatment cylinder, reduces construction land, and improves the space utilization rate in the horizontal plane.

[0023] The wastewater treatment device provided by this utility model takes advantage of the centralized layout of the acidification tank, Fenton oxidation tank and neutralization tank. By setting up an air purifier, it collects and treats the polluting gases generated in the acidification tank, Fenton oxidation tank and neutralization tank, thereby purifying the polluting gases in the physical and chemical tank without occupying construction land. Attached Figure Description

[0024] Figure 1 This is a top view schematic diagram of a physicochemical cylinder for wastewater treatment according to Example 1;

[0025] Figure 2 This is a cross-sectional schematic diagram of a physicochemical cylinder for wastewater treatment according to Example 1, wherein the stirring device is a mechanical stirring device;

[0026] Figure 3 This is a cross-sectional schematic diagram of a physicochemical tank for wastewater treatment according to Example 1, wherein the stirring device is an air stirring device;

[0027] Figure 4 This is a top view schematic diagram of a physicochemical cylinder for wastewater treatment according to Example 2;

[0028] Figure 5 This is a cross-sectional schematic diagram of a physicochemical tank for wastewater treatment according to Example 2, wherein the stirring device in the Fenton oxidation tank is a mechanical stirring device, and the stirring devices in the acidification tank and neutralization tank are air stirring devices.

[0029] Figure 6 This is a cross-sectional schematic diagram of a physicochemical cylinder for wastewater treatment according to Example 2, wherein the stirring device is an air stirring device.

[0030] Explanation of reference numerals in the attached figures

[0031] 1: Outer cylinder;

[0032] 2: Connectors;

[0033] 3: Acidification tank; 31: Second sub-zone; 32: Acid dosing pipe; 33: Sewage pipe; 34: Pipeline mixer;

[0034] 41: Catalyst mixing zone; 42: Fenton oxidation zone; 43: First sub-zone; 44: Catalyst dosing tube; 45: Oxidant dosing tube;

[0035] 5: Neutralization tank; 51: Third sub-region; 52: Alkali dosing tube;

[0036] 61: Agitator motor; 62: Agitator paddle; 63: Crossbeam;

[0037] 71: Air inlet pipe; 72: Main pipe; 73: Branch pipe; 74: Aeration hole;

[0038] 8: Inner cylinder;

[0039] 9: Liquid level. Detailed Implementation

[0040] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. The directional terms such as "upper" and "lower" used herein refer to... Figure 2 The orientation shall prevail.

[0041] Example 1

[0042] like Figures 1 to 3As shown, this embodiment provides a physicochemical treatment cylinder for wastewater treatment, including an outer cylinder 1 and a cylindrical connector 2 located on the axis of the outer cylinder 1. Several partitions are connected between the connector 2 and the outer cylinder 1, dividing the internal treatment space of the outer cylinder 1 into an acidification tank, a Fenton oxidation tank, and a neutralization tank. The diameter of the connector 2 is 200-500 mm. The treatment spaces of the acidification tank, the Fenton oxidation tank, and the neutralization tank all extend upward to the top plate of the physicochemical treatment cylinder and downward to the bottom plate of the physicochemical treatment cylinder. The acidification tank is connected to the Fenton oxidation tank, and the Fenton oxidation tank is connected to the neutralization tank.

[0043] This design of the physicochemical treatment cylinder integrates acidification, Fenton oxidation, and neutralization of wastewater into a single cylinder, shortening the pipeline path, fully utilizing the internal space of the cylinder, reducing construction land use, and improving space utilization in the horizontal plane. Furthermore, the cylindrical connector 2 facilitates the connection of the baffle between the connector 2 and the outer cylinder 1, improving connection stability.

[0044] Preferably, in this embodiment, the connector 2 is a hollow column. This saves materials. Of course, using a hollow column as the connector 2 is only a preferred option. It is conceivable that using a solid column as the connector 2 would also facilitate the connection of the partition between the connector 2 and the outer cylinder 1, and the connection would be stable.

[0045] Preferably, the wastewater in the physicochemical tank flows through the acidification tank, Fenton oxidation tank, and neutralization tank along an alternating serpentine path in the vertical direction. The Fenton oxidation tank is divided into at least one first sub-region 43, extending upwards to the top plate and downwards to the bottom plate of the physicochemical tank. These first sub-regions 43 are interconnected, allowing the wastewater in the Fenton oxidation tank to flow through each first sub-region 43 along an alternating serpentine path in the vertical direction. Thus, by dividing the Fenton oxidation tank into at least one first sub-region 43 and connecting them, the wastewater in the Fenton oxidation tank flows through each first sub-region 43 along an alternating serpentine path in the vertical direction, extending the Fenton oxidation reaction time and facilitating wastewater mixing.

[0046] Specifically, in this embodiment, the Fenton oxidation tank is divided into four first sub-regions 43, namely, first sub-region a, first sub-region b, first sub-region c, and first sub-region d arranged sequentially. Wastewater in the Fenton oxidation tank flows sequentially through first sub-regions a, b, c, and d. First sub-region a has a first wastewater inlet and a first wastewater outlet at its top; first sub-region b has a second wastewater inlet and a second wastewater outlet at its top; first sub-region c has a third wastewater inlet and a third wastewater outlet at its top; and first sub-region d has a fourth wastewater inlet and a fourth wastewater outlet at its top. The first wastewater inlet is connected to the acidification tank; the first wastewater outlet is connected to the second wastewater inlet; the second wastewater outlet is connected to the third wastewater inlet; the third wastewater outlet is connected to the fourth wastewater inlet; and the fourth wastewater outlet is connected to the neutralization tank. In this way, the wastewater in the Fenton oxidation tank flows through each first sub-region 43 along a serpentine path that alternates between vertical and horizontal directions.

[0047] Preferably, the acidification tank is divided into at least one second sub-region 31 extending upwards to the top plate and downwards to the bottom plate of the physicochemical tank. These second sub-regions 31 are interconnected, allowing wastewater in the acidification tank to flow through each sub-region 31 along an alternating serpentine path. Similarly, the neutralization tank is divided into at least one third sub-region 51 extending upwards to the top plate and downwards to the bottom plate of the physicochemical tank. These third sub-regions 51 are interconnected, allowing wastewater in the neutralization tank to flow through each sub-region 51 along an alternating serpentine path. This extends the wastewater reaction time in both the acidification and neutralization tanks and promotes better wastewater mixing.

[0048] Specifically, in this embodiment, the acidification tank is divided into two second sub-regions 31, namely, second sub-region a and second sub-region b arranged sequentially. Wastewater in the acidification tank flows sequentially through second sub-regions a and b. A wastewater inlet at the top of second sub-region a is connected to wastewater pipe 33, and a wastewater outlet at the top of second sub-region a is connected to second sub-region b. A wastewater outlet at the top of second sub-region b is connected to the Fenton oxidation tank. The neutralization tank is divided into two third sub-regions 51, namely, third sub-region a and third sub-region b arranged sequentially. Wastewater in the acidification tank flows sequentially through third sub-regions a and b. A wastewater inlet at the top of third sub-region a is connected to the Fenton oxidation tank, and a wastewater outlet at the top of third sub-region a is connected to third sub-region b. A wastewater outlet at the top of third sub-region b is used to discharge wastewater treated by the physical and chemical treatment tank. Thus, wastewater in the acidification tank flows through each second sub-region 31 along an alternating serpentine path in the vertical direction, and wastewater in the neutralization tank flows through each third sub-region 51 along an alternating serpentine path in the vertical direction.

[0049] Preferably, a plurality of partitions are connected between the connector 2 and the outer cylinder 1 to divide the Fenton oxidation tank into at least one first sub-region 43; a plurality of partitions are connected between the connector 2 and the outer cylinder 1 to divide the acidification tank into at least one second sub-region 31; and a plurality of partitions are connected between the connector 2 and the outer cylinder 1 to divide the neutralization tank into at least one third sub-region 51. Thus, each sub-region is a sector with its apex on the axis of the biochemical cylinder, ensuring the stable shape and structure of each sub-region.

[0050] More preferably, in this embodiment, the diameter of the connector 2 is 300mm.

[0051] Preferably, the volume ratio of the acidification tank, Fenton oxidation tank, and neutralization tank is 1:(1-3):(0.2-1). Further, in this embodiment, the volume ratio of the acidification tank, Fenton oxidation tank, and neutralization tank is 1:2:1. It should be noted that the volume ratio of the acidification tank, Fenton oxidation tank, and neutralization tank is not a fixed value, but a specific design based on the actual water quality characteristics, pollutant concentration, and reaction kinetic requirements of the wastewater being treated.

[0052] Preferably, the physical-chemical treatment tank further includes an acid dosing pipe 32, a wastewater pipe 33, a pipe mixer 34, and a stirring device; both the acid dosing pipe 32 and the wastewater pipe 33 are connected to the inlet of the pipe mixer 34, the outlet of the pipe mixer 34 is connected to the inlet of the acidification tank, and the stirring device is installed in each second sub-zone 31. In this way, the wastewater and acid are pre-mixed in the pipe mixer 34 before being sent to the acidification tank for the acidification reaction, which facilitates the acidification reaction. The stirring device can effectively mix the wastewater and acid in the acidification tank, which is beneficial to the acidification reaction. Optionally, the physical-chemical treatment tank further includes an acid dosing pipe 32, a wastewater pipe 33, and a stirring device; both the acid dosing pipe 32 and the wastewater pipe 33 are connected to the inlet of the acidification tank, and the stirring device is installed in each second sub-zone 31.

[0053] Preferably, the physicochemical cylinder further includes a catalyst dosing pipe 44, an oxidant dosing pipe 45, and a stirring device; the catalyst dosing pipe 44 is connected to the first sub-zone 43 through which the wastewater flows in the Fenton oxidation tank, and the oxidant dosing pipe 45 is connected to the second first sub-zone 43 through which the wastewater flows in the Fenton oxidation tank; the stirring device is installed in each first sub-zone 43. Thus, the mixing process of catalyst and wastewater is completed in the first first sub-zone 43 (i.e., first sub-zone a), and the catalyst is generally a ferrous sulfate solution; the mixing process of wastewater and oxidant is completed in the second first sub-zone 43 (i.e., first sub-zone b) and the oxidation reaction begins; the first sub-zones 43 after the second first sub-zone 43 (i.e., first sub-zones c and d) are used to prolong the oxidation reaction time.

[0054] Preferably, the physicochemical treatment tank further includes an alkali addition pipe 52 and a stirring device; the alkali addition pipe 52 is connected to the inlet of the neutralization tank, and the stirring device is located inside the neutralization tank. Specifically, the alkali addition pipe 52 is connected to the third sub-zone a, and the stirring device is located in each second sub-zone 31. Thus, the mixing and reaction of wastewater and alkali are completed in the third sub-zone a, and the third sub-zone b is used to extend the reaction time between wastewater and alkali.

[0055] Specifically, the stirring device can be a mechanical stirring device or an air stirring device. The mechanical stirring device includes a stirring motor 61 and a stirring paddle 62. A crossbeam 63 is fixedly connected between the connecting part 2 and the outer cylinder 1. The crossbeam 63 is located near the top plate of the physical and chemical treatment cylinder. The stirring motor 61 is fixedly mounted on the crossbeam 63 and connected to the stirring paddle 62, which is set vertically downward. When sewage is introduced into the physical and chemical treatment cylinder, the crossbeam 63 and the stirring motor 61 are located above the sewage level 9, and the stirring paddle 62 extends into the sewage.

[0056] Specifically, the air mixing device includes an air inlet pipe 71, a main pipe 72, and multiple horizontally arranged branch pipes 73. The air inlet pipe 71 is installed through the top of the outer cylinder 1. The air inlet end of the air inlet pipe 71 is located outside the materialization cylinder and is connected to the air outlet of the blower. The air outlet end of the air inlet pipe 71 is located inside the materialization cylinder and is connected to the vertically downward main pipe 72. The multiple branch pipes 73 are located at the bottom of the materialization cylinder and are all connected to the main pipe 72. Each branch pipe 73 has an aeration hole 74. In this way, air is blown in by the blower to achieve mixing of wastewater.

[0057] Example 2

[0058] like Figures 4 to 6 As shown, the physical and chemical treatment cylinder provided in this embodiment includes an outer cylinder 1 and an inner cylinder 8. The processing space between the outer cylinder 1 and the inner cylinder 8 is separated by a partition to form an acidification tank 3 and a neutralization tank 5. The processing space of the inner cylinder serves as a Fenton oxidation tank. The processing spaces of the acidification tank 3, the Fenton oxidation tank, and the neutralization tank 5 all extend upward to the top plate of the physical and chemical treatment cylinder and downward to the bottom plate of the physical and chemical treatment cylinder. The acidification tank 3 is connected to the Fenton oxidation tank, and the Fenton oxidation tank is connected to the neutralization tank 5.

[0059] This design of the physicochemical tank integrates the acidification, Fenton oxidation, and neutralization of wastewater into a single tank, shortening the pipeline path, making full use of the tank's internal space, reducing construction land use, and improving space utilization in the horizontal plane.

[0060] Preferably, the volume ratio of acidification tank 3, Fenton oxidation tank, and neutralization tank 5 is 1:(1-3):(0.2-1). Further, in this embodiment, the volume ratio of acidification tank 3, Fenton oxidation tank, and neutralization tank 5 is 1:2:1. It should be noted that the volume ratio of acidification tank 3, Fenton oxidation tank, and neutralization tank 5 is not a fixed value, but a specific design based on the actual water quality characteristics, pollutant concentration, and reaction kinetic requirements of the treated wastewater.

[0061] Preferably, the physical-chemical treatment tank further includes an acid dosing pipe 32, a wastewater pipe 33, a pipe mixer 34, and a stirring device; both the acid dosing pipe 32 and the wastewater pipe 33 are connected to the inlet of the pipe mixer 34, and the outlet of the pipe mixer 34 is connected to the inlet of the acidification tank 3. The stirring device is installed in each second sub-zone 31. Thus, the wastewater and acid are pre-mixed in the pipe mixer 34 before being fed into the acidification tank 3 for the acidification reaction, which facilitates the acidification reaction. The stirring device can effectively mix the wastewater and acid in the acidification tank 3, which is beneficial to the acidification reaction. Optionally, the physical-chemical treatment tank further includes an acid dosing pipe 32, a wastewater pipe 33, and a stirring device; both the acid dosing pipe 32 and the wastewater pipe 33 are connected to the inlet of the acidification tank 3, and the stirring device is installed in each second sub-zone 31.

[0062] Preferably, the Fenton oxidation tank is divided into a catalyst mixing zone 41 and a Fenton oxidation zone 42 by a partition. Both the catalyst mixing zone 41 and the Fenton oxidation zone 42 are areas that extend upwards to the top plate and downwards to the bottom plate of the physicochemical tank, and the catalyst mixing zone 41 and the Fenton oxidation zone 42 are connected. The physicochemical tank also includes a catalyst dosing pipe 44, an oxidant dosing pipe 45, and a stirring device; the catalyst dosing pipe 44 is connected to the catalyst mixing zone 41, the oxidant dosing pipe 45 is connected to the Fenton oxidation zone 42, and both the catalyst mixing zone 41 and the Fenton oxidation zone 42 are equipped with stirring devices.

[0063] Preferably, the physical and chemical treatment cylinder also includes an alkali addition pipe 52 and a stirring device; the alkali addition pipe 52 is connected to the inlet of the neutralization tank 5, and the stirring device is located inside the neutralization tank 5.

[0064] Specifically, the stirring device can be a mechanical stirring device or an air stirring device. The mechanical stirring device includes a stirring motor 61 and a stirring paddle 62. A crossbeam 63 is fixedly connected between the connecting part 2 and the outer cylinder 1. The crossbeam 63 is located near the top plate of the physical and chemical treatment cylinder. The stirring motor 61 is fixedly mounted on the crossbeam 63 and connected to the stirring paddle 62, which is set vertically downward. When sewage is introduced into the physical and chemical treatment cylinder, the crossbeam 63 and the stirring motor 61 are located above the sewage level 9, and the stirring paddle 62 extends into the sewage.

[0065] Specifically, the air mixing device includes an air inlet pipe 71, a main pipe 72, and multiple horizontally arranged branch pipes 73. The air inlet pipe 71 extends into the top of the outer cylinder 1, with its inlet end located outside the materialization cylinder for connection to the air outlet of the blower. Its outlet end is located inside the materialization cylinder and connects to the vertically downward-facing main pipe 72. The multiple branch pipes 73 are located at the bottom of the materialization cylinder and are all connected to the main pipe 72. Each branch pipe 73 has an aeration hole 74. Thus, by blowing air in through the blower, the wastewater is mixed.

[0066] Example 3

[0067] The main difference between this embodiment and Embodiment 2 is:

[0068] The physical and chemical treatment cylinder provided in this embodiment includes an outer cylinder 1 and an inner cylinder 8. The internal processing space of the inner cylinder 8 is divided by a partition to separate an acidification tank 3 and a neutralization tank 5. The processing space between the outer cylinder 1 and the inner cylinder 8 serves as a Fenton oxidation tank. The processing spaces of the acidification tank 3, the Fenton oxidation tank, and the neutralization tank 5 all extend upward to the top plate of the physical and chemical treatment cylinder and downward to the bottom plate of the physical and chemical treatment cylinder. The acidification tank 3 is connected to the Fenton oxidation tank, and the Fenton oxidation tank is connected to the neutralization tank 5.

[0069] This design of the physicochemical tank integrates the acidification, Fenton oxidation, and neutralization of wastewater into a single tank, shortening the pipeline path, making full use of the tank's internal space, reducing construction land use, and improving space utilization in the horizontal plane.

[0070] The remaining contents are the same as in Example 2, and will not be repeated here.

[0071] Example 4

[0072] The polluting gases generated by the physical and chemical treatment tank are directly emitted without effective collection and treatment, causing serious odor pollution to the surrounding environment and residents' lives, and affecting air quality. Therefore, this embodiment provides a wastewater treatment device, including an air purifier (not shown in the figure) and a physical and chemical treatment tank as described in Embodiments 1, 2, or 3. The air purifier is installed above the top plate of the physical and chemical treatment tank and has a polluting gas inlet and a purified gas outlet. The upper gas layers of the acidification tank, Fenton oxidation tank, and neutralization tank are all connected to the polluting gas inlet.

[0073] In this way, by taking advantage of the concentrated layout of the acidification tank, Fenton oxidation tank and neutralization tank, and by installing air purifiers to collect and treat the polluting gases generated in the acidification tank, the polluting gases in the physical and chemical tank are purified without occupying construction land.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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 physico-chemical cartridge for sewage treatment, characterized in that, The device includes an outer cylinder (1) and a cylindrical connector (2) located on the axis of the outer cylinder (1). Several partitions are connected between the connector (2) and the outer cylinder (1) to divide the internal processing space of the outer cylinder (1) into an acidification tank (3), a Fenton oxidation tank and a neutralization tank (5). The diameter of the connector (2) is 200-500 mm. Alternatively, the physical and chemical treatment device includes an outer cylinder (1) and an inner cylinder (8). The processing space between the outer cylinder (1) and the inner cylinder (8) is divided by partitions to separate the acidification tank (3) and the neutralization tank (5). The processing space of the inner cylinder is used as the Fenton oxidation tank. Alternatively, the physical and chemical treatment device includes an outer cylinder (1) and an inner cylinder (8). The processing space inside the inner cylinder (8) is divided by partitions to separate the acidification tank (3) and the neutralization tank (5). The processing space between the outer cylinder (1) and the inner cylinder (8) is used as the Fenton oxidation tank. The treatment spaces of the acidification tank (3), Fenton oxidation tank and neutralization tank (5) are all connected to the top plate of the physical and chemical cylinder and to the bottom plate of the physical and chemical cylinder. The acidification tank (3) is connected to the Fenton oxidation tank and the Fenton oxidation tank is connected to the neutralization tank (5).

2. The physico-chemical cartridge for sewage treatment according to claim 1, characterized in that, The connector (2) is a hollow column.

3. The physico-chemical cartridge for sewage treatment according to claim 1, characterized in that, Wastewater in the physicochemical tank flows through the acidification tank (3), Fenton oxidation tank and neutralization tank (5) along a serpentine path that alternates between the vertical and horizontal directions. The Fenton oxidation tank is divided into at least one first sub-zone (43) that extends upward to the top plate of the physical and chemical tank and downward to the bottom plate of the physical and chemical tank. The first sub-zones (43) are connected to each other, so that the wastewater in the Fenton oxidation tank flows through each first sub-zone (43) along a serpentine path that alternates between the vertical and horizontal directions.

4. The physico-chemical cartridge for sewage treatment according to claim 3, characterized in that, The acidification tank (3) is divided into at least one second sub-zone (31) that extends upward to the top plate of the physical chemical cylinder and downward to the bottom plate of the physical chemical cylinder. The second sub-zones (31) are connected to each other, so that the sewage in the acidification tank (3) flows through each second sub-zone (31) along a serpentine path that alternates between the vertical and horizontal directions. The neutralization tank (5) is divided into at least one third sub-zone (51) that extends upward to the top plate of the physical chemical cylinder and downward to the bottom plate of the physical chemical cylinder. The third sub-zones (51) are connected to each other, so that the sewage in the neutralization tank (5) flows through each third sub-zone (51) along a serpentine path that alternates between the vertical and horizontal directions.

5. The physico-chemical cartridge for sewage treatment according to claim 4, characterized in that, A plurality of partitions are connected between the connector (2) and the outer cylinder (1) to divide the Fenton oxidation tank into at least one first sub-region (43); a plurality of partitions are connected between the connector (2) and the outer cylinder (1) to divide the acidification tank (3) into at least one second sub-region (31); a plurality of partitions are connected between the connector (2) and the outer cylinder (1) to divide the neutralization tank (5) into at least one third sub-region (51).

6. The physico-chemical cartridge for sewage treatment according to claim 1, characterized in that, The volume ratio of the acidification tank (3), the Fenton oxidation tank, and the neutralization tank (5) is 1:(1-3):(0.2-1).

7. The physico-chemical cartridge for sewage treatment according to claim 1, characterized in that, It also includes an acid dosing pipe (32), a sewage pipe (33), a pipe mixer (34), and a stirring device; The acid dosing pipe (32) and the sewage pipe (33) are both connected to the inlet of the pipe mixer (34), the outlet of the pipe mixer (34) is connected to the inlet of the acidification tank (3), and the stirring device is installed in the acidification tank (3).

8. The physico-chemical cartridge for sewage treatment according to claim 3, characterized in that, The device further comprises a catalyst adding pipe (44), an oxidant adding pipe (45) and a stirring device; The catalyst adding pipe (44) is communicated with a first sub-zone (43) through which the wastewater flows in the Fenton oxidation tank, the oxidant adding pipe (45) is communicated with a second sub-zone (43) through which the wastewater flows in the Fenton oxidation tank, and the stirring device is arranged in each sub-zone (43).

9. The physico-chemical cartridge for sewage treatment according to claim 1, characterized in that, The device further comprises a lye adding pipe (52) and a stirring device; the lye adding pipe (52) is communicated with the inlet of the neutralization tank (5), and the stirring device is arranged in the neutralization tank (5).

10. A sewage treatment apparatus characterised by The device further comprises an air purifier and the physicochemical cylinder as claimed in any one of claims 1 to 9, the air purifier being installed above the top plate of the physicochemical cylinder, the air purifier having a polluted gas inlet and a purified gas outlet, and the upper gas layer of the acidification tank (3), the Fenton oxidation tank and the neutralization tank (5) being communicated with the polluted gas inlet.

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