Sewage treatment device for transformer substation

Abstract

The invention provides a transformer substation wastewater treatment device, and belongs to the technical field of sewage wells, the transformer substation wastewater treatment device comprises a transition pool group and a plurality of decomposition pool groups, and the transition pool group is provided with a liquid flow cavity; a first flow inlet and a first flow outlet which are respectively communicated with the liquid flow cavity are formed in the transition pool group at intervals up and down, and the bottom wall of the liquid flow cavity is not lower than the first flow outlet; a filtering structure is also arranged in the transition pool group and is arranged above the first flow inlet; a first exhaust port is formed in the top of the transition pool group; the plurality of decomposition pool groups are sequentially communicated end to end; in the communication direction of the plurality of decomposition tank groups, the flow inlet end of the decomposition tank group positioned at one end is communicated with the first flow outlet, and the decomposition tank group positioned at the other end is provided with a liquid outlet; a vent hole is formed in the top of each decomposition tank group, and each vent hole is communicated with the liquid flow cavity. The transformer substation wastewater treatment device provided by the invention can prevent unpleasant odor from diffusing to the outside and reduce environmental pollution.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage wells, and more specifically, relates to a wastewater treatment device for a transformer substation. Background Art

[0002] With the continuous acceleration of urbanization, electricity consumption in various fields has gradually increased, the number of substations has continued to increase, and the scale has gradually expanded; in order to ensure the safety of electricity consumption and power supply near the substation, the domestic wastewater generated near the substation and the large amount of rainwater gathered during the rainy season need to be treated by wastewater treatment devices. In order to ensure the safety of air pressure in the sewage treatment device, a vent needs to be set on the sewage treatment device to maintain the balance of internal and external pressures.

[0003] In the prior art, the sewage treatment device is usually provided with a plurality of different functional areas, each area is provided with a separate vent, and the unpleasant gas in the sewage treatment device will also be discharged from the vent, causing the entire vicinity of the substation and even the surrounding area to be filled with unpleasant odors, causing environmental pollution. Summary of the invention

[0004] The purpose of the present invention is to provide a substation waste water treatment device, aiming to solve the technical problem that the vicinity of the existing sewage treatment device is often filled with unpleasant odors, causing environmental pollution.

[0005] To achieve the above object, the technical solution adopted by the present invention is: to provide a substation waste water treatment device, comprising:

[0006] A transition tank group has a liquid flow cavity; the transition tank group is provided with a first inlet and a first outlet respectively connected to the liquid flow cavity at intervals above and below, and the bottom wall of the liquid flow cavity is not lower than the first outlet; a filter structure is also provided in the transition tank group, and the filter structure is placed above the first inlet; a first exhaust port is provided at the top of the transition tank group;

[0007] A plurality of decomposition pool groups are connected in sequence head to tail; in the connection direction of the plurality of decomposition pool groups, the inlet end of the decomposition pool group located at one end is connected with the first outlet, and the decomposition pool group located at the other end has a liquid discharge port; a vent is provided at the top of each of the decomposition pool groups, and each of the vents is connected with the liquid flow cavity.

[0008] In a possible implementation, a first partition is provided inside the transition tank group, and the first partition divides the transition tank group into the liquid flow chamber and the air flow chamber which are spaced apart from each other in the upper and lower parts;

[0009] Wherein, the first partition is provided with an air guide port which connects the air flow cavity and the liquid flow cavity up and down, each of the air vents is connected with the air flow cavity respectively, and each of the air vents is connected with the liquid flow cavity through the air guide port and the air flow cavity.

[0010] By further configuring the transition tank group, an airflow cavity is separated in the transition tank group, impurities mixed in the gas can be precipitated in the airflow cavity, and the gas can be preliminarily filtered.

[0011] In some embodiments, the first outlet and the first inlet are respectively arranged on two radial sides of the transition tank group;

[0012] One end of the first baffle is connected to the bottom of the first outlet, and the first baffle is arranged to be inclined upward from the first outlet to the first inlet.

[0013] Exemplarily, a first inlet pipe is provided at the first inlet port, and the first inlet pipe extends radially inwardly from the transition tank group to the liquid flow cavity;

[0014] Wherein, the pipe opening of the first inlet pipe extends above the air guide port.

[0015] In some embodiments, a second partition extending in a vertical direction is provided in the liquid flow chamber, and the second partition extends upward to the tube wall of the first inlet pipe and separates the air guide port and the tube opening of the first inlet pipe on both sides of the second partition.

[0016] In a possible implementation, the multi-stage decomposition tank group is a sedimentation tank group, a septic tank group and a purification tank group connected end to end in sequence, the sedimentation tank group is connected to the first outlet, the purification tank group is provided with the drain port, the inlet end of the septic tank group is connected to the outlet end of the sedimentation tank group, and the outlet end of the septic tank group is connected to the inlet end of the sedimentation tank group.

[0017] By setting up multiple groups of decomposition tanks, different components in wastewater and rainwater can be treated separately through different decomposition tank groups, so as to gradually separate solid impurities and water in wastewater and rainwater, facilitate the treatment of pollutants in wastewater and rainwater, and improve the purification effect of the final discharge liquid.

[0018] In some embodiments, each of the decomposition tank groups is provided with an annular partition, and the annular partition separates the inner cavity of the decomposition tank group into a precipitation chamber and a solution chamber; in the radial direction of the decomposition tank group, the precipitation chamber is placed inside, and the solution chamber is placed outside, and is arranged in an annular shape; wherein the annular partition is provided with a through hole connecting the precipitation chamber and the solution chamber.

[0019] Exemplarily, each decomposition tank group is provided with a second inlet pipe at the inlet end and a second outlet pipe at the outlet end; wherein, the second inlet pipe passes through the solution cavity and extends into the precipitation cavity, and the second outlet pipe extends outward from the solution cavity.

[0020] In some embodiments, a first limiting ring is provided at the bottom of the decomposition tank group, and the first limiting ring is connected to the top of the annular separator; a second limiting ring is provided at the top of the decomposition tank group, and the second limiting ring is connected to the bottom of the annular separator; the first limiting ring and the second limiting ring are used to limit the annular separator.

[0021] Exemplarily, the first limiting ring is composed of a plurality of groups of first limiting portions spaced apart along the circumference of the decomposition tank group, and each group of the first limiting portions includes two first protrusions correspondingly disposed inside and outside the annular separator;

[0022] The second limiting ring is composed of a plurality of groups of second limiting portions spaced apart along the circumference of the decomposition tank group, and each group of the second limiting portions includes two second protrusions correspondingly arranged inside and outside the annular separator.

[0023] Compared with the prior art, the solution shown in the embodiment of the present application is provided with a transition tank group, and the bottom wall of the liquid flow cavity of the transition tank group is not lower than the first outlet. Therefore, the waste sewage and rainwater discharged into the sewage treatment device provided by the present application will not be accumulated in a large amount in the transition tank group, but will directly enter into multiple decomposition tank groups. Therefore, there will be no large odor in the transition tank group; further, in order to ensure the stability of the air pressure in each decomposition tank group, the vents of the decomposition tank group are connected to the transition tank group respectively in the present application. Therefore, it is only necessary to connect with the outside world through the first exhaust port of the transition tank group to ensure that the air pressure of the transition tank group and the multiple decomposition tank groups is within a safe range; and since a filtering structure is also provided in the transition tank group, the odor impurities in the gas can be removed by the filtering structure to prevent the unpleasant odor from spreading to the outside world, thereby improving the environment of the substation and its surrounding areas and reducing environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the structure of a substation waste water treatment device provided by an embodiment of the present invention;

[0026] Figure 2A schematic cross-sectional structure diagram of a transition tank group provided in an embodiment of the present invention;

[0027] Figure 3 A schematic diagram of the cross-sectional structure of a sedimentation tank group provided in an embodiment of the present invention;

[0028] Figure 4 A schematic diagram of the cross-sectional structure of a purification pool group provided in an embodiment of the present invention.

[0029] In the figure:

[0030] 1. Transition tank group; 11. Liquid flow cavity; 12. Air flow cavity; 13. First partition; 131. Air guide port; 14. Second partition; 15. First inlet port; 16. First outlet port; 17. First exhaust port; 2. Filter structure; 21. Filter screen; 22. Deodorization layer; 23. Adsorption layer; 3. Decomposition tank group; 31. Sedimentation tank group; 32. Corrosion tank group; 33. Purification tank group; 331. Liquid discharge port; 34. Vent; 35. Sedimentation cavity; 36. Solution cavity; 37. First protrusion; 38. Second protrusion; 4. Annular partition; 5. First inlet pipe; 6. First outlet pipe; 7. Second inlet pipe; 8. Second outlet pipe; 9. Third inlet pipe; 10. Switch control valve. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0033] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0034] Please also read Figures 1 to 4, the substation waste water treatment device provided by the present invention is now described. The substation waste water treatment device comprises a transition tank group 1 and a plurality of decomposition tank groups 3; the transition tank group 1 has a liquid flow cavity 11; the transition tank group 1 is provided with a first inlet 15 and a first outlet 16 respectively connected to the liquid flow cavity 11 at intervals above and below, and the bottom wall of the liquid flow cavity 11 is not lower than the first outlet 16; a filter structure 2 is also provided in the transition tank group 1, and the filter structure 2 is placed above the first inlet 15; a first exhaust port 17 is provided at the top of the transition tank group 1; a plurality of decomposition tank groups 3 are connected head to tail in sequence; in the connection direction of the plurality of decomposition tank groups 3, the inlet end of the decomposition tank group 3 at one end is connected to the first outlet 16, and the decomposition tank group 3 at the other end has a liquid discharge port 331; a vent 34 is provided at the top of each decomposition tank group 3, and each vent 34 is connected to the liquid flow cavity 11.

[0035] Waste water and rainwater enter from the first inlet 15 of the transition tank group 1, and are directly transmitted to the first outlet 16 through the liquid flow cavity 11; it should be understood that even if some impurities adhere to the liquid flow cavity 11, the actual adhesion amount is very small, and the odor caused by this part of the adhesion amount is negligible compared to the large amount of sewage impurities in each decomposition tank group 3. Therefore, the odor discharged from the transition tank group 1 can be greatly reduced, thereby reducing gas pollution.

[0036] Optionally, to ensure that sewage can smoothly enter the decomposition tank group 3, a spare pipe can be set at the inlet end of the decomposition tank group 3, and the spare pipe is connected to the first inlet 15 of the transition tank group 1, so that when the transition tank group 1 is blocked, it can be drained into the decomposition tank group 3 through the spare pipe.

[0037] Specifically, multiple decomposition pool groups 3 can be connected in sequence along a certain straight line direction, or multiple decomposition pool groups 3 can be arranged in an array and connected in sequence; the specific arrangement method can be set according to the actual site.

[0038] Compared with the prior art, the substation wastewater treatment device provided by the present invention is provided with a transition tank group 1, and the bottom wall of the liquid flow cavity 11 of the transition tank group 1 is not lower than the first outlet 16. Therefore, the wastewater and rainwater discharged into the sewage treatment device provided by the present application and the solid waste therein will not be accumulated in large quantities in the transition tank group 1, but directly enter the multiple decomposition tank groups 3. Therefore, there will be no large odor in the transition tank group 1; further, in order to ensure the stability of the air pressure in each decomposition tank group 3, the air vents 34 of the decomposition tank group 3 are connected to the transition tank group 1 respectively in the present application. Therefore, it is only necessary to connect with the outside world through the first exhaust port 17 of the transition tank group 1 to ensure that the air pressure of the transition tank group 1 and the multiple decomposition tank groups 3 is within a safe range; and since a filter structure 2 is also provided in the transition tank group 1, the odor impurities in the gas can be removed by the filter structure 2 to prevent the unpleasant odor from spreading to the outside world, thereby improving the environment of the substation and its surrounding areas and reducing environmental pollution.

[0039] See also Figure 2 In some possible embodiments, a first partition 13 is provided inside the transition tank group 1, and the first partition 13 divides the transition tank group 1 into a liquid flow chamber 11 and an air flow chamber 12 which are spaced apart from each other in the upper and lower directions; wherein, an air guide port 131 is provided on the first partition 13 for connecting the air flow chamber 12 and the liquid flow chamber 11 in the upper and lower directions, and each air vent 34 is connected to the air flow chamber 12 respectively, and each air vent 34 is connected to the liquid flow chamber 11 through the air guide port 131 and the air flow chamber 12.

[0040] A first partition 13 is provided to separate the transition tank group 1 into a liquid flow chamber 11 and an air flow chamber 12. It should be understood that when the gases in the multiple decomposition tank groups 3 enter the transition tank group 1, there may be impurity particles. Therefore, the air flow chamber 12 can precipitate some air flow impurities. At the same time, the air flow chamber 12 can provide a buffer space for odorous gases to avoid directly entering the liquid flow chamber 11 and causing excessive odorous gases in the liquid flow chamber 11.

[0041] Specifically, the vent 34 is connected to the transition tank group 1 through an air duct. The odorous gas is buffered in the air duct, the air flow chamber 12 and the liquid flow chamber 11, and some impurities are precipitated, which can reduce the odor components to a certain extent. Then, it is filtered again through the filter structure 2, which can further reduce the odor components, thereby reducing gas pollution and improving environmental quality.

[0042] By further configuring the transition tank group 1 and separating the airflow chamber 12 in the transition tank group 1, impurities mixed in the gas can be precipitated in the airflow chamber 12, thereby preliminarily filtering the gas.

[0043] Furthermore, a spare air pipe is provided at the vent 34 of each transition tank group 1, and the spare air pipe is used to ensure the air pressure in the decomposition tank group 3 when the air pipe is blocked. Optionally, a switch control valve 10 is provided on the spare air pipe and the air pipe respectively to control the on and off of each pipeline.

[0044] Optionally, a pressure gauge is provided on each decomposition tank group 3, so as to observe the pressure in each decomposition tank group 3 in real time to avoid gas accumulation.

[0045] See also Figure 2 In some embodiments, the first outlet 16 and the first inlet 15 are arranged on both radial sides of the transition tank group 1; wherein, one end of the first baffle 13 is connected to the bottom of the first outlet 16, and the first baffle 13 is arranged inclined upward from the first outlet 16 to the first inlet 15.

[0046] The first partition plate 13 is arranged to be inclined so as to guide the mixed liquid in the liquid flow cavity 11 into the decomposition tank group 3 , thereby preventing the mixed liquid of sewage from accumulating in the transition tank group 1 .

[0047] See also Figure 2 Exemplarily, a first inlet pipe 5 is provided at the first inlet port 15 , and the first inlet pipe 5 extends radially inwardly along the transition tank group 1 into the liquid flow cavity 11 ; wherein, the pipe opening of the first inlet pipe 5 extends above the air guide port 131 .

[0048] It should be understood that, due to the provision of the air guide port 131, the mixed liquid of the sewage in the liquid flow chamber 11 may flow back from the air guide port 131 to the decomposition tank group 3. In the present application, by extending the pipe opening of the first inlet pipe 5 above the air guide port 131, the mixed liquid can be prevented from entering the air flow chamber 12 from the air guide port 131.

[0049] Furthermore, even if a small amount of the mixed liquid accidentally splashes to the air guide port 131 , the mixed liquid can still be buffered by the air flow cavity 12 to avoid entering the air guide pipe and affecting gas discharge.

[0050] See also Figure 2 In some embodiments, a second partition 14 extending in the vertical direction is provided in the liquid flow chamber 11 , and the second partition 14 extends upward to the tube wall of the first inlet pipe 5 , and separates the air guide port 131 and the tube opening of the first inlet pipe 5 on both sides of the second partition 14 .

[0051] The second partition plate 14 can further protect the mixed liquid from entering the air guide port 131. The gas can flow upward from the air guide port 131 and from the outer wall of the first inlet pipe 5 into the filter structure 2 for filtration and discharge.

[0052] See also Figure 1In some possible embodiments, the multi-stage decomposition tank group 3 is a sedimentation tank group 31, a septic tank group 32 and a purification tank group 33 connected in sequence end to end, the sedimentation tank group 31 is connected to the first outlet 16, the purification tank group 33 is provided with a drain port 331, the inlet end of the septic tank group 32 is connected to the outlet end of the sedimentation tank group 31, and the outlet end of the septic tank group 32 is connected to the inlet end of the sedimentation tank group 31.

[0053] Specifically, the specific number of the decomposition pool group 3 can be set according to actual needs.

[0054] By setting up a plurality of decomposition tank groups 3, the solid components and liquid components in the waste water and rainwater can be treated separately by different decomposition tank groups 3, so as to gradually separate the solid impurities and water in the waste water and rainwater, facilitate the treatment of pollutants in the waste water and rainwater, and improve the purification effect of the final discharge liquid.

[0055] The liquid discharge port 331 is used to discharge the purified liquid so as to reserve space for the newly introduced mixed liquid.

[0056] See also Figure 3 and Figure 4 In some embodiments, each decomposition tank group 3 is provided with an annular partition 4, which separates the inner cavity of the decomposition tank group 3 into a precipitation chamber 35 and a solution chamber 36; in the radial direction of the decomposition tank group 3, the precipitation chamber 35 is placed inside, and the solution chamber 36 is placed outside, and is arranged in an annular shape; wherein a through hole connecting the precipitation chamber 35 and the solution chamber 36 is provided on the annular partition 4.

[0057] By providing the annular partition 4 , the solid mixture in the mixed liquid can be retained in the precipitation chamber 35 , and the liquid part thereof can be discharged into the solution chamber 36 .

[0058] Optionally, a plurality of through holes are provided on the annular separator 4, and the annular separator 4 forms a filter screen 21. Alternatively, a plurality of longitudinally extending through holes with larger sizes are provided on the annular separator 4 to facilitate liquid discharge.

[0059] Furthermore, by providing the annular partition 4 , the solid mixture can be prevented from blocking the outlet of the decomposition tank group 3 .

[0060] See also Figure 3 Exemplarily, a second inlet pipe 7 is provided at the inlet end of each decomposition tank group 3, and a second outlet pipe 8 is provided at the outlet end; wherein the second inlet pipe 7 passes through the solution cavity 36 and extends into the precipitation cavity 35, and the second outlet pipe 8 extends outward from the solution cavity 36.

[0061] The second inlet pipe 7 is inserted into the internal sedimentation chamber 35 so that the solid mixture in the mixed liquid is intercepted in the sedimentation chamber 35 and the liquid substance is discharged to achieve a primary separation of solid and liquid; at the same time, with the help of the gravity of the solid substance, it is precipitated downward to form a secondary separation, thereby performing two solid-liquid separations in each decomposition tank group 3.

[0062] See also Figure 3 In some embodiments, a first limiting ring is provided at the bottom of the decomposition tank group 3, and the first limiting ring is connected to the top of the annular separator 4; a second limiting ring is provided at the top of the decomposition tank group 3, and the second limiting ring is connected to the bottom of the annular separator 4; the first limiting ring and the second limiting ring are used to limit the annular separator 4.

[0063] By providing the first limiting ring and the second limiting ring, the annular separator 4 can be limited to avoid displacement of the annular separator 4 and influence on the precipitation and separation of impurities.

[0064] Optionally, when the height of the annular partition 4 exceeds a preset value, a support column may be arranged between the annular partition 4 and the inner circumferential wall of the decomposition tank group 3 , and a plurality of support columns may be arranged at intervals around the outer circumferential wall of the annular partition 4 .

[0065] See also Figure 3 Exemplarily, the first limiting ring is composed of a plurality of groups of first limiting portions arranged at intervals along the circumference of the decomposition tank group 3, and each group of first limiting portions includes two first protrusions 37 correspondingly arranged inside and outside the annular separator 4; the second limiting ring is composed of a plurality of groups of second limiting portions arranged at intervals along the circumference of the decomposition tank group 3, and each group of second limiting portions includes two second protrusions 38 correspondingly arranged inside and outside the annular separator 4.

[0066] Specifically, two first protrusions 37 are provided so as to be clamped on the inner and outer sides of the annular separator 4 to ensure the support and clamping strength of the annular separator 4 .

[0067] As another specific embodiment of the first limiting portion and the second limiting portion, optionally, the first limiting portion includes a third protrusion abutting against the inner circumferential wall side of the annular separator 4, and the second limiting portion includes a fourth protrusion abutting against the outer circumferential wall side of the annular separator 4; or, the first limiting portion includes a fifth protrusion abutting against the outer circumferential wall side of the annular separator 4, and the second limiting portion includes a sixth protrusion abutting against the inner circumferential wall side of the annular separator 4.

[0068] Exemplarily, the decomposition tank group 3 includes a bottom tank and a top cover made of reinforced concrete, and the top cover is detachably connected to the bottom tank; when the solid mixture needs to be discharged, the top cover can be removed and the solid mixture can be pumped out from the sedimentation chamber 35 by means of a driving pump; or a waste discharge port is opened on the top cover, and a sealing plug or a closed cover is provided so that the solid mixture can be pumped out from the waste discharge port by means of a driving pump and a suction pipe. Optionally, a visual window is also provided on the top cover of the decomposition tank group 3 for observation.

[0069] Optionally, the filter structure 2 includes multiple layers of filter screens 21 spaced apart from each other, and a deodorizing layer 22 is disposed between each two adjacent groups of filter screens 21. Specifically, the deodorizing layer 22 may be one or more deodorizing materials such as activated carbon, bamboo charcoal, coconut fiber charcoal, etc.; it may also be a deodorant made of acidic or alkaline materials, and the specific configuration may be based on actual needs. Further, when the deodorizing layer 22 is made of granular material, the multiple layers of deodorizing layer 22 are configured to gradually decrease in size from bottom to top according to the granular material, so as to gradually achieve deodorization and reduce the risk of clogging.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wastewater treatment device for a substation, characterized in that: include: A transition tank group (1) has a liquid flow cavity (11); the transition tank group (1) is provided with a first inlet (15) and a first outlet (16) which are respectively connected to the liquid flow cavity (11) at intervals above and below, and the bottom wall of the liquid flow cavity (11) is not lower than the first outlet (16); a filter structure (2) is also provided in the transition tank group (1), and the filter structure (2) is placed above the first inlet (15); a first exhaust port (17) is provided at the top of the transition tank group (1); A plurality of decomposition pool groups (3) are connected in sequence head to tail; in the connection direction of the plurality of decomposition pool groups (3), the inlet end of the decomposition pool group (3) located at one end is connected to the first outlet (16), and the decomposition pool group (3) located at the other end has a liquid discharge port (331); a vent (34) is provided at the top of each of the decomposition pool groups (3), and each of the vents (34) is connected to the liquid flow chamber (11).

2. The substation waste water treatment device according to claim 1, characterized in that: A first partition (13) is provided inside the transition tank group (1), and the first partition (13) divides the transition tank group (1) into the liquid flow chamber (11) and the air flow chamber (12) which are arranged in an upper and lower spaced relationship; The first partition plate (13) is provided with an air guide port (131) which connects the air flow chamber (12) and the liquid flow chamber (11) up and down, and each of the air vents (34) is connected to the air flow chamber (12) respectively, and each of the air vents (34) is connected to the liquid flow chamber (11) through the air guide port (131) and the air flow chamber (12).

3. The substation waste water treatment device according to claim 2, characterized in that: The first outlet (16) and the first inlet (15) are respectively arranged on two radial sides of the transition tank group (1); One end of the first partition plate (13) is connected to the bottom of the first outlet (16), and the first partition plate (13) is arranged to be inclined upward from the first outlet (16) to the first inlet (15).

4. The substation waste water treatment device according to claim 2 or 3, characterized in that: A first inlet pipe (5) is provided at the first inlet port (15), and the first inlet pipe (5) extends radially inwardly of the transition tank group (1) into the liquid flow chamber (11); Wherein, the pipe opening of the first inlet pipe (5) extends above the air guide port (131).

5. The substation waste water treatment device according to claim 4, characterized in that: A second partition (14) extending in the vertical direction is provided in the liquid flow chamber (11), and the second partition (14) extends upward to the tube wall of the first inlet pipe (5), and separates the air guide port (131) and the tube opening of the first inlet pipe (5) on both sides of the second partition (14).

6. The substation waste water treatment device according to claim 1, characterized in that: The multi-stage decomposition tank group (3) comprises a sedimentation tank group (31), a septic tank group (32) and a purification tank group (33) which are connected in end to end order. The sedimentation tank group (31) is connected to the first outlet (16), the purification tank group (33) is provided with the drainage port (331), the inlet end of the septic tank group (32) is connected to the outlet end of the sedimentation tank group (31), and the outlet end of the septic tank group (32) is connected to the inlet end of the sedimentation tank group (31).

7. The substation waste water treatment device according to claim 1, characterized in that: Each of the decomposition tank groups (3) is provided with an annular separator (4), and the annular separator (4) separates the inner cavity of the decomposition tank group (3) into a precipitation cavity (35) and a solution cavity (36); in the radial direction of the decomposition tank group (3), the precipitation cavity (35) is arranged inside, and the solution cavity (36) is arranged outside, and they are arranged in an annular shape; wherein a through hole is provided on the annular separator (4) for connecting the precipitation cavity (35) and the solution cavity (36).

8. The substation waste water treatment device according to claim 7, characterized in that: Each decomposition tank group (3) is provided with a second inlet pipe (7) at the inlet end and a second outlet pipe (8) at the outlet end; wherein the second inlet pipe (7) passes through the solution cavity (36) and extends into the precipitation cavity (35), and the second outlet pipe (8) extends outward from the solution cavity (36).

9. The substation waste water treatment device according to claim 7, characterized in that: A first limiting ring is provided at the bottom of the decomposition tank group (3), and the first limiting ring is connected to the top of the annular separator (4); a second limiting ring is provided at the top of the decomposition tank group (3), and the second limiting ring is connected to the bottom of the annular separator (4); the first limiting ring and the second limiting ring are used to limit the annular separator (4).

10. The substation waste water treatment device according to claim 9, characterized in that: The first limiting ring is composed of a plurality of groups of first limiting portions arranged at intervals along the circumference of the decomposition tank group (3), and each group of the first limiting portions includes two first protrusions (37) correspondingly arranged inside and outside the annular separator (4); The second limiting ring is composed of a plurality of groups of second limiting portions arranged at intervals along the circumference of the decomposition tank group (3), and each group of the second limiting portions includes two second protrusions (38) correspondingly arranged inside and outside the annular separator (4).

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