Dosing device and integrated sewage treatment equipment

Abstract

The utility model relates to a dosing device and integrated sewage treatment equipment. The dosing device comprises a dosing shell and a dosing aeration pipe, and the dosing shell and the treatment tank in the integrated sewage treatment equipment form a buried structure, so that cooling and heat preservation effects on the dephosphorization liquid medicine in the dosing shell are achieved, the stability of the dephosphorization liquid medicine can be prolonged, the shelf life of the dephosphorization liquid medicine is prolonged, and the dephosphorization efficiency is improved. The manual dosing frequency is reduced, and the maintenance and operation cost is reduced. The chemical outlet of the chemical adding shell and the communicating port between the aerobic chamber and the settling chamber are arranged up and down, and the action of adding chemical into the settling chamber can be realized by utilizing the gravity of the dephosphorization chemical liquid, so that the energy consumption and the equipment cost are saved, and the maintenance and operation cost is further reduced. The aeration device aerates the dosing shell through the dosing aeration pipe and stirs the dephosphorization liquid medicine in the dosing shell, and compared with a conventional paddle type stirring device, the same stirring effect is achieved, meanwhile, stirring energy consumption can be reduced, and the maintenance and operation cost is further reduced.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a dosing device and an integrated wastewater treatment equipment. Background Technology

[0002] Rural sewage treatment typically employs underground or above-ground sewage treatment equipment. Given the high biodegradability and cost-effectiveness of domestic sewage, a mature and reliable process usually involves AO (anaerobic digester) nitrogen removal followed by chemical phosphorus removal. However, rural sewage treatment sites are often remote, numerous, and have limited budgets. Furthermore, the phosphorus removal process involves chemicals with short shelf lives, short maintenance cycles, and high energy consumption for mixing. This results in many rural sewage treatment projects becoming "idle" projects in the later stages due to high operation and maintenance costs.

[0003] In view of the shortcomings of the existing technology, the present invention provides a device for extending the shelf life of phosphorus removal agents and reducing the energy consumption of agent preparation, thereby reducing operation and maintenance costs. Utility Model Content

[0004] Therefore, it is necessary to provide a dosing device and integrated wastewater treatment equipment that can extend the shelf life of phosphorus removal agents and reduce the maintenance and operation costs of wastewater treatment equipment.

[0005] A dosing device, comprising:

[0006] A dosing housing is used to be at least partially fixed to the top of the treatment tank in an integrated wastewater treatment device, and together with the treatment tank, forms an underground structure; the dosing housing has opposing top and bottom ends; the top end is formed with a dosing port, a water inlet, an aeration port, and a vent; the bottom end is formed with a dosing outlet;

[0007] The dosing aeration pipe is inserted through the aeration port, and the other end extends into the bottom of the dosing housing and communicates with the space inside the dosing housing.

[0008] In one embodiment, two baffles are further included; the two baffles are fixedly spaced within the dosing housing to divide the space within the dosing housing into a water filling area connected to the water inlet, a stirring area connected to the aeration port, the dosing port and the vent, and a dosing area connected to the dosing port; the edges on both sides of the baffles are provided with a plurality of first notches and second notches spaced apart along the direction from the top end to the bottom end.

[0009] In one embodiment, all the first notches are located on the edge of the baffle near the outlet of the dosing aeration pipe and on the end of the baffle away from the bottom; all the second notches are located on the entire edge of the baffle away from the outlet of the dosing aeration pipe.

[0010] In one embodiment, the dosing housing includes a bottom plate, a first side plate, a second side plate, a third side plate, a fourth side plate, and a top plate; the first side plate, the second side plate, the third side plate, and the fourth side plate are connected end to end along the circumference of the bottom plate and are all connected to the bottom plate; the top plate is disposed at the end of the first side plate, the second side plate, the third side plate, and the fourth side plate away from the bottom plate; the bottom plate, the first side plate, the second side plate, the third side plate, the fourth side plate, and the top plate enclose and form the internal space of the dosing housing; the top plate has a dosing port, a water inlet, an aeration port, and a vent; the first side plate has a dosing outlet that connects the inside and outside of the dosing housing; one baffle is connected between the first side plate and the second side plate, and the other baffle is connected between the third side plate and the fourth side plate.

[0011] In one embodiment, the dosing housing further includes a plurality of reinforcing ribs spaced circumferentially along the bottom plate; one side of each reinforcing rib is connected to the outer wall of one of the first side plate, the second side plate, the third side plate, and the fourth side plate, and the other side is connected to the side of the bottom plate facing the top plate.

[0012] In one embodiment, the aeration port and the dosing aeration pipe are two in a one-to-one correspondence; the dosing device also includes two mounting plates; one mounting plate is fixedly connected to the second side plate, the third side plate and the bottom plate respectively, and the other mounting plate is fixedly connected to the fourth side plate, the first side plate and the bottom plate respectively; the two dosing aeration pipes are detachably mounted on the two mounting plates respectively, and correspond one-to-one with the two baffles respectively; the bottom opening of the dosing aeration pipe is arranged facing the side of the baffle that has the first notch.

[0013] In one embodiment, the dosing aeration pipe includes a vertical pipe section and a horizontal pipe section connected at one end to the vertical pipe section; the end of the vertical pipe section away from the horizontal pipe section passes through the aeration port; the opening direction of the end of the horizontal pipe section away from the vertical pipe section is perpendicular to the central axis direction of the vertical pipe section.

[0014] An integrated wastewater treatment device includes a treatment tank, a dosing device as described above, an anoxic aeration pipe, an aerobic aeration pipe, and an aeration device. The treatment tank has an anoxic chamber, an aerobic chamber, and a sedimentation chamber connected in sequence inside. The dosing device is at least partially fixed to the top of the aerobic chamber and forms an underground structure together with the treatment tank. The dosing outlet is connected to the communication port between the aerobic chamber and the sedimentation chamber. One end of the anoxic aeration pipe and the aerobic aeration pipe extend to the bottom of the anoxic chamber and the bottom of the aerobic chamber, respectively, and the other end extends out of the treatment tank. The aeration device is connected to the ends of the anoxic aeration pipe, the aerobic aeration pipe, and the dosing aeration pipe located outside the treatment tank.

[0015] In one embodiment, a dosing structure is fixed on the side wall of the aerobic chamber near the sedimentation chamber; a curved dosing channel is formed on the dosing structure; the two ends of the dosing channel are respectively connected to the outlet and the communication port between the aerobic chamber and the sedimentation chamber.

[0016] In one embodiment, the processing tank is provided with a first partition and a second partition at intervals to divide the space inside the processing tank into the anoxic chamber, the aerobic chamber, and the sedimentation chamber; the first partition has a first through hole at the end away from the dosing shell that connects the aerobic chamber and the anoxic chamber; the second partition has a second through hole that connects the aerobic chamber and the sedimentation chamber; the second through hole is connected to one end of the dosing channel;

[0017] The dosing structure includes an outer shell and multiple horizontal plates; the outer shell covers and is fixed to the second partition; the multiple horizontal plates are spaced apart between the outer shell and the second partition, and any two adjacent horizontal plates have gaps between them and the inner wall of the outer shell and the second partition; the outer shell, the second partition and the multiple horizontal plates form an S-shaped dosing channel.

[0018] The aforementioned dosing device and integrated wastewater treatment equipment form a buried structure with the dosing shell and the treatment tank within the integrated wastewater treatment system. This means that during installation, the treatment tank and dosing shell can be buried underground together, providing cooling and insulation for the phosphorus removal solution within the dosing shell. This extends the stability and shelf life of the phosphorus removal solution, reduces the frequency of manual dosing, and lowers maintenance costs. Furthermore, the connection between the dosing shell's outlet and the aerobic and sedimentation chambers is vertically arranged, eliminating the need for a separate metering pump. The phosphorus removal solution can be added to the sedimentation chamber using its own gravity, saving energy and equipment costs, further reducing maintenance costs. Moreover, the aeration device aerates the dosing shell through aeration pipes, stirring the phosphorus removal solution within. Compared to conventional paddle-type agitators, aeration-based stirring achieves the same effect while reducing energy consumption, further lowering maintenance costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the integrated sewage treatment equipment in a preferred embodiment of the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram of the dosing device in the integrated wastewater treatment equipment shown.

[0021] Figure 3 for Figure 2 Top view of the dosing device shown;

[0022] Figure 4 for Figure 2 A schematic diagram of the baffle structure in the dosing device shown;

[0023] Figure 5 for Figure 2 The diagram shows the structure of the dosing aeration pipe in the dosing device.

[0024] Explanation of reference numerals in the detailed embodiments: 10, integrated sewage treatment equipment; 100, treatment tank; 110, anoxic chamber; 120, aerobic chamber; 130, sedimentation chamber; 140, first partition; 141, first through hole; 150, second partition; 151, second through hole; 200, dosing device; 210, dosing shell; 211, top end; 212, bottom end; 213, dosing port; 214, water inlet; 215, aeration port; 216, vent; 217, dosing port; 218, water addition zone; 219, mixing zone; 2101. Dispensing area; 2102, base plate; 2103, first side plate; 2104, second side plate; 2105, third side plate; 2106, fourth side plate; 2107, top plate; 2108, reinforcing rib plate; 2109, mounting plate; 220, dosing aeration pipe; 221, vertical pipe section; 222, horizontal pipe section; 223, bend pipe section; 230, baffle; 231, first notch; 232, second notch; 300, anoxic aeration pipe; 400, aerobic aeration pipe; 600, dosing structure; 610, dosing channel; 620, outer shell; 630, horizontal plate. Detailed Implementation

[0025] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] When describing positional relationships, unless otherwise specified, when an element is referred to as being "on" another element, it may be directly on the other element or there may be intermediate elements. It is also understood that when an element is referred to as being "between" two elements, it may be the only one between the two elements, or there may be one or more intermediate elements.

[0028] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0029] Figure 1 The diagram illustrates the structure of an integrated wastewater treatment device according to one embodiment of the present invention. For ease of explanation, the accompanying drawings only show structures relevant to the embodiments of the present invention.

[0030] Please see Figure 1 This utility model provides a dosing device 200 and an integrated sewage treatment equipment 10. The integrated sewage treatment equipment 10 includes a treatment tank 100, a dosing device 200, an anoxic aeration pipe 300, an aerobic aeration pipe 400, and an aeration device (not shown).

[0031] The treatment tank 100 has an anoxic chamber 110, an aerobic chamber 120, and a sedimentation chamber 130 connected in sequence inside. A dosing device 200 is at least partially fixed to the top of the aerobic chamber 120 and forms an underground structure together with the treatment tank 100. The outlet 217 of the dosing device 200 is connected to the communication port between the aerobic chamber 120 and the sedimentation chamber 130. One end of the anoxic aeration pipe 300 and the aerobic aeration pipe 400 extends to the bottom of the anoxic chamber 110 and the bottom of the aerobic chamber 120, respectively, and the other end extends outside the treatment tank 100. An aeration device is connected to the end of the anoxic aeration pipe 300, the aerobic aeration pipe 400, and the dosing aeration pipe 220 within the dosing device 200 located outside the treatment tank 100. The dosing device 200 is used to supply phosphorus removal solution to the sedimentation chamber 130.

[0032] It should be noted that buried structure refers to a structure that is buried below ground level during installation.

[0033] Furthermore, in some embodiments, a dosing structure 600 is fixed on the side wall of the aerobic chamber 120 near the sedimentation chamber 130. A curved dosing channel 610 is formed on the dosing structure 600. The two ends of the dosing channel 610 are connected to the outlet 217 and the communication port between the aerobic chamber 120 and the sedimentation chamber 130, respectively.

[0034] The dosing channel 610 in the dosing structure 600 extends the length of the dosing channel 610 between the dosing device 200 and the sedimentation chamber 130 as much as possible within a limited space. This extends the reaction time of the phosphorus removal solution after it flows out of the dosing device 200, ensuring that the phosphorus removal solution is fully mixed before entering the sedimentation chamber 130 and enters the sedimentation chamber 130 in the best condition, thereby effectively improving the mud-water separation effect in the sedimentation chamber 130.

[0035] Furthermore, in some embodiments, a first partition 140 and a second partition 150 are spaced apart within the treatment tank 100 to divide the space within the treatment tank 100 into an anoxic chamber 110, an aerobic chamber 120, and a sedimentation chamber 130. The first partition 140 has a first through-hole 141 at its end away from the dosing housing 210, connecting the aerobic chamber 120 and the anoxic chamber 110. The second partition 150 has a second through-hole 151 connecting the aerobic chamber 120 and the sedimentation chamber 130. The second through-hole 151 communicates with one end of the dosing channel 610.

[0036] The dosing structure 600 includes an outer shell 620 and multiple horizontal plates 630. The outer shell 620 covers and is fixed to the second partition 150. The multiple horizontal plates 630 are spaced apart between the outer shell 620 and the second partition 150, and any two adjacent horizontal plates 630 have gaps between them and the inner wall of the outer shell 620 and the second partition 150, respectively. An S-shaped dosing channel 610 is formed between the outer shell 620, the second partition 150, and the multiple horizontal plates 630.

[0037] Therefore, the S-shaped dosing channel 610 allows the phosphorus removal solution flowing out of the dosing device 200 to flow for a longer time within the dosing structure 600, thereby extending the reaction time of the phosphorus removal solution and ensuring more thorough mixing of the phosphorus removal solution before entering the sedimentation chamber 130.

[0038] Figure 2 The diagram illustrates the structure of a dosing device according to one embodiment of the present invention. For ease of explanation, the accompanying drawings only show structures relevant to the embodiments of the present invention.

[0039] Please refer to the following: Figure 2 In a preferred embodiment of the present invention, the dosing device 200 includes a dosing shell 210 and a dosing aeration pipe 220.

[0040] The dosing housing 210 is at least partially fixed to the top of the treatment tank 100 within the integrated wastewater treatment equipment 10, and together with the treatment tank 100 forms an underground structure. The dosing housing 210 has opposing top ends 211 and bottom ends 212. The top end 211 is formed with a dosing port 213, a water inlet 214, an aeration port 215, and a vent 216. The bottom end 212 is formed with a dosing outlet 217. Thus, the dosing outlet 217 is located within the treatment tank 100.

[0041] The dosing aeration pipe 220 passes through the aeration port 215, and its other end extends into the bottom of the dosing housing 210 and communicates with the space inside the dosing housing 210. In the integrated sewage treatment equipment 10, the dosing port 213 is connected to the communication port between the aerobic chamber 120 and the sedimentation chamber 130. The aeration device is connected to the anoxic aeration pipe 300, the aerobic aeration pipe 400 and the dosing aeration pipe 220 respectively, so as to provide compressed gas into the anoxic aeration pipe 300, the aerobic aeration pipe 400 and the dosing aeration pipe 220 respectively.

[0042] The dosing tank 210, together with the treatment tank 100 in the integrated wastewater treatment equipment 10, forms an underground structure. This means that during installation, the treatment tank 100 and the dosing tank 210 can be buried underground together to cool and insulate the phosphorus removal solution within the dosing tank 210. This extends the stability and shelf life of the phosphorus removal solution, reduces the frequency of manual dosing, and lowers maintenance costs. Furthermore, the connection between the outlet 217 of the dosing tank 210 and the aerobic chamber 120 and sedimentation chamber 130 is vertically arranged, eliminating the need for a separate metering pump. The phosphorus removal solution can be added to the sedimentation chamber 130 using its own gravity, saving energy and equipment costs, further reducing maintenance costs. Furthermore, the aeration device aerates the dosing shell 210 through the dosing aeration pipe 220 to stir the phosphorus removal solution inside the dosing shell 210. Compared with conventional paddle-type agitators, stirring the phosphorus removal solution by aeration can achieve the same stirring effect while reducing stirring energy consumption, thereby further reducing maintenance costs.

[0043] Please refer to the following: Figure 3 and Figure 4 In some embodiments, the dosing device 200 further includes two baffles 230. The two baffles 230 are fixedly spaced within the dosing housing 210 to divide the space within the dosing housing 210 into a water filling zone 218 communicating with the water inlet 214, a stirring zone 219 communicating with the aeration port 215, the dosing port 213, and the vent 216, and a discharging zone 2101 communicating with the discharging port 217. Multiple first notches 231 and second notches 232 are respectively spaced apart on the edges of both sides of the baffles 230 in the direction from the top end 211 to the bottom end 212.

[0044] Thus, when water is added to the dosing tank 210, the water first enters the water addition zone 218 through the inlet 214 for buffering, and then enters the mixing zone 219 through multiple first notches 231 and multiple second notches 232. This allows the water to mix more quickly with the phosphorus removal solution in the mixing zone 219. The phosphorus removal solution in the mixing zone 219 then enters the discharge zone 2101 through multiple first notches 231 and multiple second notches 232 on the baffle 230 on one side of the discharge zone 2101. When it is necessary to add chemicals to the sedimentation zone, the phosphorus removal solution in the discharge zone 2101 can directly enter the discharge zone 2101 through the discharge port 217. Therefore, the baffle 230 on the inlet side allows the water added to the dosing tank 210 through the inlet 214 to enter the mixing zone 219 through multiple first notches 231 and multiple second notches 232, making it easier for the newly added water to be mixed evenly in the mixing zone 219. The baffle 230 on one side of the discharge zone 2101 can reduce the impact of aeration and stirring in the stirring zone 219 on the phosphorus removal solution in the discharge zone 2101, ensuring that the liquid near the discharge port 217 is calm, so that the drug can be added to the sedimentation chamber 130 more smoothly through the discharge port 217.

[0045] Furthermore, in some embodiments, all the first notches 231 are located on the edge of the baffle 230 near the outlet of the dosing aeration pipe 220, and at the end of the baffle 230 away from the bottom end 212. That is, the upper half of the baffle 230 has the first notches 231. All the second notches 232 are located on the entire edge of the baffle 230 away from the outlet of the dosing aeration pipe 220.

[0046] Since the lower half of the side of the baffle 230 with the first notch 231 has no notch, it can block the compressed gas discharged through the air outlet of the aeration pipe, thereby reducing the impact of the stirring zone 219 on the liquid in the water addition zone 218 and the drug dispensing zone 2101 during the aeration and stirring process, and further ensuring the stability of the water addition process and the drug dispensing process.

[0047] Further, in some embodiments, the dosing housing 210 includes a bottom plate 2102, a first side plate 2103, a second side plate 2104, a third side plate 2105, a fourth side plate 2106, and a top plate 2107. The first side plate 2103, the second side plate 2104, the third side plate 2105, and the fourth side plate 2106 are connected end-to-end along the circumference of the bottom plate 2102 and are all connected to the bottom plate 2102. The top plate 2107 is disposed at the end of the first side plate 2103, the second side plate 2104, the third side plate 2105, and the fourth side plate 2106 away from the bottom plate 2102. The bottom plate 2102, the first side plate 2103, the second side plate 2104, the third side plate 2105, the fourth side plate 2106, and the top plate 2107 enclose and form the internal space of the dosing housing 210. The top plate 2107 is provided with a dosing port 213, a water inlet 214, an aeration port 215, and a vent 216. The first side plate 2103 is provided with a dosing port 217 that connects the inside and outside of the dosing housing 210. One baffle 230 is connected between the first side plate 2103 and the second side plate 2104, and the other baffle 230 is connected between the third side plate 2105 and the fourth side plate 2106.

[0048] Thus, the dosing tank 210 has a rectangular shell structure, which offers greater dimensional flexibility compared to a circular tank structure. Furthermore, two baffles 230 are positioned between the first side plate 2103 and the second side plate 2104, and between the third side plate 2105 and the fourth side plate 2106, respectively. This positions the two baffles 230 at opposite corners within the dosing tank 210, resulting in a greater distance between the outlet 217 and the inlet 214. This ensures that the liquid near the outlet 217 is a well-mixed phosphorus removal solution.

[0049] Furthermore, the dosing housing 210 also includes a plurality of reinforcing ribs 2108 spaced circumferentially along the base plate 2102. One side of each reinforcing rib 2108 is connected to the outer wall of one of the first side plates 2103, the second side plate 2104, the third side plate 2105, and the fourth side plate 2106, and the other side is connected to the side of the base plate 2102 facing the top plate 2107. The arrangement of the reinforcing ribs increases the connection strength between the first side plate 2103 and the base plate 2102, between the second side plate 2104 and the base plate 2102, between the third side plate 2105 and the base plate 2102, and between the fourth side plate 2106 and the base plate 2102, thereby effectively improving the structural strength of the dosing housing 210.

[0050] Furthermore, in some embodiments, the aeration port 215 and the dosing aeration pipe 220 are two in a one-to-one correspondence. The dosing device 200 also includes two mounting plates 2109. One mounting plate 2109 is fixedly connected to the second side plate 2104, the third side plate 2105 and the bottom plate 2102 respectively, and the other mounting plate 2109 is fixedly connected to the fourth side plate 2106, the first side plate 2103 and the bottom plate 2102 respectively. The two dosing aeration pipes 220 are detachably mounted on the two mounting plates 2109 respectively, and correspond one-to-one with the two baffles 230. The bottom end 212 of the dosing aeration pipe 220 is positioned facing the side of the corresponding baffle 230 that has a first notch 231.

[0051] Thus, the two dosing aeration pipes 220 and the two baffles 230 are respectively positioned at the four corners of the dosing housing 210 to ensure that the distances between the air outlets of the two dosing aeration pipes 220, between the air outlet and the drug outlet 217 of each dosing aeration pipe 220, and between the air outlet and the water addition zone 218 of each dosing aeration pipe 220 are as far apart as possible, minimizing mutual interference. The mounting plate 2109 is provided to facilitate the installation of the dosing aeration pipes 220 within the dosing housing 210. The arrangement of the two dosing aeration pipes 220 improves the mixing effect of the liquid in the mixing zone 219.

[0052] Please refer to the following: Figure 5 In some embodiments, the dosing aeration pipe 220 includes a vertical pipe section 221 and a horizontal pipe section 222 connected at one end to the vertical pipe section 221. The end of the vertical pipe section 221 away from the horizontal pipe section 222 passes through the aeration port 215. The opening direction of the end of the horizontal pipe section 222 away from the vertical pipe section 221 is perpendicular to the central axis direction of the vertical pipe section 221.

[0053] Thus, the dosing aeration pipe 220 is an L-shaped pipe composed of a vertical pipe section 221 and a horizontal pipe section 222. The air outlet of the dosing aeration pipe 220 is arranged horizontally and faces the lower half of the side with the first notch 231 on the corresponding baffle 230, thereby lateral aeration at the bottom of the dosing housing 210, so as to increase the aeration and stirring range of the dosing aeration pipe 220 in the dosing housing 210 and improve the aeration and stirring effect.

[0054] Specifically, the vertical pipe section 221 is connected to the horizontal pipe section 222 through the bend section 223 to ensure smoother flow of compressed gas in the dosing aeration pipe 220 and reduce the pressure loss of compressed gas in the dosing aeration pipe 220.

[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A medicated device characterized by, The application relates to a dosing device for an integrated sewage treatment equipment. The dosing device comprises a dosing shell which is fixed to the top of a treatment tank of the integrated sewage treatment equipment and forms a buried structure with the treatment tank; the dosing shell has opposite top and bottom ends; the top end is provided with a dosing port, a water inlet port, an aeration port and a gas permeation port; and the bottom end is provided with a medicine outlet port. The dosing device further comprises two baffles which are fixed to the dosing shell and divide the space in the dosing shell into a water adding area connected with the water inlet port, a stirring area connected with the aeration port, the dosing port and the gas permeation port, and a medicine outlet area connected with the medicine outlet port; and the edge portions of the baffles are respectively provided with a plurality of first notches and second notches which are spaced apart along the direction from the top end to the bottom end.

2. The dosing device of claim 1, wherein All the first notches are located on the edge portion of one side of the baffle close to the aeration port of the dosing aeration pipe and on the end of the baffle far from the bottom end; and all the second notches are located on the entire edge portion of the side of the baffle far from the aeration port of the dosing aeration pipe.

3. The dosing device of claim 2, wherein, The dosing shell comprises a bottom plate, a first side plate, a second side plate, a third side plate, a fourth side plate and a top plate; the first side plate, the second side plate, the third side plate and the fourth side plate are sequentially connected in a head-to-tail mode along the circumference of the bottom plate and are all connected with the bottom plate; the top plate is arranged at the end of the first side plate, the second side plate, the third side plate and the fourth side plate far from the bottom plate; the bottom plate, the first side plate, the second side plate, the third side plate, the fourth side plate and the top plate surround to form the internal space of the dosing shell; the top plate is provided with the dosing port, the water inlet port, the aeration port and the gas permeation port; the first side plate is provided with the medicine outlet port which connects the inside and outside of the dosing shell; one of the baffles is connected between the first side plate and the second side plate, and the other baffle is connected between the third side plate and the fourth side plate.

4. The dosing device of claim 2, wherein, The dosing shell further comprises a plurality of reinforcing rib plates which are spaced apart along the circumference of the bottom plate; one side of the reinforcing rib plate is connected with the outer wall of one of the first side plate, the second side plate, the third side plate and the fourth side plate, and the other side is connected with the side of the bottom plate facing the top plate.

5. The dosing device of claim 4, wherein, The aeration port and the dosing aeration pipe are one-to-one corresponding; the dosing device further comprises two mounting plates; one of the mounting plates is fixedly connected with the second side plate, the third side plate and the bottom plate, and the other mounting plate is fixedly connected with the fourth side plate, the first side plate and the bottom plate; the two dosing aeration pipes are detachably mounted on the two mounting plates and are one-to-one corresponding to the two baffles; and the bottom end opening of the dosing aeration pipe is arranged on the side corresponding to the baffle provided with the first notch.

6. The dosing device of claim 5, wherein, ​ 7. The medication device of claim 1, wherein, The dosing aeration pipe comprises a vertical pipe section and a horizontal pipe section connected to one end of the vertical pipe section; the end of the vertical pipe section away from the horizontal pipe section is provided with the aeration port; the opening direction of the end of the horizontal pipe section away from the vertical pipe section is perpendicular to the central axis direction of the vertical pipe section.

8. An integrated sewage treatment apparatus, characterized by comprising: The device comprises a treatment tank, the dosing device as claimed in any one of claims 1 to 7, an anoxic aeration pipe, an aerobic aeration pipe and an aeration device; the inside of the treatment tank has an anoxic chamber, an aerobic chamber and a sedimentation chamber which are sequentially communicated; the dosing shell is at least partially fixed to the top of the aerobic chamber and forms a buried structure together with the treatment tank; the medicine outlet is communicated with the communication port between the aerobic chamber and the sedimentation chamber; one end of the anoxic aeration pipe and the aerobic aeration pipe respectively extends to the bottom of the anoxic chamber and the bottom of the aerobic chamber, and the other end of both extends out of the treatment tank; the aeration device is respectively communicated with the anoxic aeration pipe, the aerobic aeration pipe and the end of the dosing aeration pipe outside the treatment tank.

9. The integrated wastewater treatment device according to claim 8, wherein The dosing structure is fixed on the side wall of the aerobic chamber close to the side of the sedimentation chamber; the dosing structure forms a curved dosing channel; the two ends of the dosing channel are respectively communicated with the medicine outlet and the communication port between the aerobic chamber and the sedimentation chamber.

10. The integrated wastewater treatment device of claim 9, wherein The first and second partitions are arranged in the treatment tank to separate the space in the treatment tank into the anoxic chamber, the aerobic chamber and the sedimentation chamber; the first partition is provided with a first through hole which communicates the aerobic chamber and the anoxic chamber at the end away from the dosing shell; the second partition is provided with a second through hole which communicates the aerobic chamber and the sedimentation chamber; the second through hole is communicated with one end of the dosing channel; The dosing structure comprises a shell and a plurality of horizontal plates; the shell is covered and fixed to the second partition; The plurality of horizontal plates are arranged in the shell and the second partition at intervals, and any two adjacent horizontal plates have gaps with the inner wall of the shell and the second partition respectively; the shell, the second partition and the plurality of horizontal plates form an S-shaped dosing channel. The dosing structure comprises a shell and a plurality of horizontal plates; the shell is covered and fixed to the second partition; The plurality of horizontal plates are arranged in the shell and the second partition at intervals, and any two adjacent horizontal plates have gaps with the inner wall of the shell and the second partition respectively; the shell, the second partition and the plurality of horizontal plates form an S-shaped dosing channel.

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