Sewage treatment tank

Abstract

The invention discloses a sewage treatment tank which comprises a tank body, a partition plate, a grid supporting plate, an activated sludge treatment device, a flocculating agent adding device, a filtering device and a disinfecting device, the activated sludge treatment device, the flocculating agent adding device, the filtering device and the disinfecting device are integrated together through the tank body, and the activated sludge treatment device and the flocculating agent adding device are integrated through a spiral sewage flow channel. According to the sewage treatment tank, the purpose of centralized installation of all the devices is achieved, the occupied area of the whole sewage treatment tank is reduced, activated sludge can be added into sewage through the Venturi effect through the arranged activated sludge treatment device, aeration can be carried out while activated sludge is added, the sewage treatment speed is increased, and the sewage treatment efficiency is improved. The arranged flocculant adding device realizes uniform feeding through sliding of a row feeding head, so that the flocculation effect of the sewage is ensured, the sedimentation effect is ensured, and a stirring assembly on the disinfection device enables disinfection to be more thorough and uniform through stirring.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a sewage treatment pool. Background Art

[0002] Sewage treatment is commonly used in various factories or municipal projects. Sewage treatment is generally carried out in sewage treatment pools. In the past, sewage treatment pools occupied a large area, and when adding treatment auxiliary substances, they relied on manual addition or simple pumps for pumping. Manual addition was time-consuming and labor-intensive, and pumping could not satisfy the requirement of evenly distributing the treatment auxiliary substances, affecting the treatment effect. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a sewage treatment pool which can avoid the trouble of manual feeding and make the feeding uniform and the treatment effect good.

[0004] A sewage treatment pool according to an embodiment of the present invention comprises a pool body, a partition, a grid support plate, an activated sludge treatment device, a flocculant adding device, a filtering device and a disinfecting device, wherein a sewage flow channel is arranged inside the pool body, the sewage flow channel is arranged in a spiral shape, the end of the sewage flow channel away from the spiral center is arranged as a water inlet end, and the end of the sewage flow channel close to the spiral center is arranged as a water outlet end; a partition is detachably arranged in the sewage flow channel, the partition divides the sewage flow channel into a primary filter chamber, an activated sludge treatment chamber, a sedimentation chamber, a secondary filter chamber and a disinfection chamber, the primary filter chamber, the activated sludge treatment chamber, the sedimentation chamber, the secondary filter chamber and the disinfection chamber are arranged in a stepped manner in sequence; a grid support plate The grid support plate is connected to the tank body, and is arranged above the sewage flow channel; the activated sludge treatment device includes an activated sludge storage tank, an aeration pump and a spreading head, and a plurality of the spreading heads are arranged, each of the spreading heads is connected to the air outlet end of the aeration pump through a venturi tube, and a plurality of the spreading heads are evenly distributed along the path extension direction of the activated sludge treatment chamber, the activated sludge storage tank is connected to the narrowing part of the venturi tube, and the activated sludge storage tank, the aeration pump and the spreading head are all arranged on the grid support plate; the flocculant adding device includes a first water level detector, a bracket, a row of feeding heads, a first solenoid valve and a feeding chute, the first water level detector is arranged on the inner wall of the sedimentation chamber, and the The first water level detector is used to detect the water level in the sedimentation chamber, the bracket is detachably connected to the grid support plate, the feed trough is connected to the bracket, the feed trough is used to load flocculant, the row of feeding heads is slidably arranged on the bracket along the path extension direction of the sedimentation chamber, the row of feeding heads is connected to the feed trough through the first solenoid valve, a pump is connected on the pipeline between the first solenoid valve and the feed trough, the first solenoid valve is electrically connected to the first water level detector, the first water level detector is used to detect the water level of the sedimentation chamber to control the opening and closing of the first solenoid valve, the pump is used to pump the flocculant of the feed trough into the row of feeding heads, the The discharge and feeding head is used to add flocculant to the sedimentation chamber; the filtering device is loaded at the upper end of the secondary filtering chamber, and the filtering device is used to filter the water discharged from the sedimentation chamber; the disinfection device includes a second water level detector, a loading bucket, a second solenoid valve and a stirring assembly, the second water level detector is arranged on the inner wall of the disinfection chamber, the loading bucket and the stirring assembly are both arranged on the grid support plate, the stirring head of the stirring assembly extends into the disinfection chamber, the loading bucket is connected to the second solenoid valve through a hose, the second water level detector is electrically connected to the second solenoid valve, the second water level detector is used to detect the water level to control the opening and closing of the second solenoid valve, and the stirring assembly is used to stir the water in the disinfection chamber.

[0005] A sewage treatment tank according to an embodiment of the present invention has at least the following beneficial effects: the tank body is arranged to integrate the activated sludge treatment device, the flocculant adding device, the filtering device and the disinfection device, and the purpose of centralized installation of each device is achieved through the spirally arranged sewage flow channel, so that the floor area of ​​the entire sewage treatment tank is reduced, and the arranged activated sludge treatment device can add activated sludge to sewage through the Venturi effect, and can aerate while adding activated sludge, thereby increasing the sewage treatment speed, the arranged flocculant adding device can achieve uniform feeding through the sliding of the row of feeding heads, thereby ensuring the flocculation effect of sewage, thereby ensuring the sedimentation effect, the stirring component on the disinfection device makes the disinfection more thorough and uniform through stirring, the specific structural arrangement of the activated sludge treatment device, the flocculant adding device and the disinfection device is simple, and it is convenient to be installed on the grid support plate, and the modular design facilitates installation and use.

[0006] According to some embodiments of the present invention, a mud guiding slope is provided at the bottom of the sedimentation chamber, and a mud guiding hole is opened on the side wall of the sedimentation chamber, the mud guiding hole is connected to the sedimentation chamber, the mud guiding hole is connected to a relatively low position of the mud guiding slope, the mud guiding hole is connected to a sludge pump, and the sludge pump is connected to the activated sludge storage tank. The sludge pump is used to pump the sludge at the bottom of the sedimentation chamber to the activated sludge storage tank. The sludge pump can make full use of the activated sludge, and the mud guiding slope can realize the aggregation of sludge and facilitate the absorption and discharge of sludge.

[0007] According to some embodiments of the present invention, the grid support plate is detachably connected to the pool body, thereby achieving modular installation and disassembly of the entire grid support plate.

[0008] According to some embodiments of the present invention, the height of the activated sludge storage tank is higher than the height of the venturi tube, and the gravitational potential energy of the activated sludge storage tank can be used to achieve the addition of activated sludge.

[0009] According to some embodiments of the present invention, the spreading head includes a cavity shell and a turbine rotor, the turbine rotor is rotatably connected to the cavity shell, the cavity shell is cylindrical, the circumferential outer edge of the cavity shell is connected to an L-shaped elbow, the elbow is connected to the Venturi tube, a plurality of liquid outlet holes are opened on the circumferential wall of the cavity shell, the liquid outlet holes are evenly distributed around the circumference of the cavity shell, the liquid outlet holes are connected to the cavity shell, the rotating shaft of the turbine rotor is coaxially arranged with the axis of the cavity shell, the spreading head has a simple structure, the turbine rotor is used to spread the activated sludge, and the spreading is more uniform.

[0010] According to some embodiments of the present invention, the row of feeding heads is arranged in a rectangular shape, the length direction of the row of feeding heads extends along the width direction of the precipitation chamber, the interior of the row of feeding heads is arranged to be hollow, the upper end of the row of feeding heads is provided with a connecting hole, the connecting hole is used to connect to the feeding trough through the first solenoid valve, and the lower end of the row of feeding heads is provided with a plurality of leakage holes, and the plurality of leakage holes are distributed along the length direction of the row of feeding heads.

[0011] According to some embodiments of the present invention, track clamping holes are provided on both side ends of the row of feeding heads, and track clamping wheels are rotatably provided in the track clamping holes. A track is provided on the bracket, and the track is used to pass through the track clamping holes. The track clamping wheels are clamped on the track. The track is set to limit the sliding of the row of feeding heads and guide the row of feeding heads so that the row of feeding heads can evenly add flocculants.

[0012] According to some embodiments of the present invention, the filtering device includes a mounting shell, in which a plurality of adjacent mounting grooves are arranged, each mounting groove is connected, and the mounting grooves are used to load filter media. A placement step is provided at the upper end of the secondary filter chamber, and the mounting shell is arranged on the placement step. The plurality of mounting grooves are distributed from top to bottom, and the filtering device has a simple structure and is convenient for installation and use.

[0013] According to some embodiments of the present invention, the pool body is made of stainless steel, and a pulley is provided at the bottom of the pool body.

[0014] According to some embodiments of the present invention, the grid support plate is detachably connected to the pool body.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 is a schematic diagram of a sewage treatment pool from a top view according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A schematic diagram of an activated sludge treatment device and a flocculant addition device of a sewage treatment tank is shown;

[0019] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0020] Figure 4 for Figure 1 A schematic diagram of a coupled feeding head of a flocculant adding device for a sewage treatment tank is shown;

[0021] Figure 5 for Figure 1 A schematic diagram of a filtration device and a disinfection device of a sewage treatment tank is shown;

[0022] Figure 6 for Figure 1 A schematic diagram of a spreading head of an activated sludge treatment device of a sewage treatment tank is shown.

[0023] Tank body 100, sewage flow channel 110, primary filter chamber 111, activated sludge treatment chamber 112;

[0024] Sedimentation chamber 113, mud guide slope 113a, mud guide hole 113b, mud pump 113c;

[0025] Secondary filter chamber 114, placement step 114a;

[0026] Sterilization chamber 115, pulley 120;

[0027] Partition plate 200, grid support plate 300;

[0028] An activated sludge treatment device 400, an activated sludge storage tank 410, and an aeration pump 420;

[0029] Spreading head 430, cavity housing 431, turbine rotor 432, elbow 433, liquid outlet 434;

[0030] Venturi 440;

[0031] Flocculant adding device 500, first water level detector 510, bracket 520, track 521;

[0032] A connecting feeding head 530, a connecting hole 531, a material leakage hole 532, a track clamping hole 533, and a track clamping wheel 534;

[0033] A first solenoid valve 540, a material discharge chute 550, and a material pump 560;

[0034] Filter device 600, mounting housing 610, mounting slot 611;

[0035] The disinfection device 700 , the second water level detector 710 , the loading bucket 720 , the second solenoid valve 730 , and the stirring assembly 740 . DETAILED DESCRIPTION

[0036] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] In the description of the present invention, "several" means one or more, "more" means two or more, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0039] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0040] Reference Figures 1 to 6A sewage treatment pool includes a pool body 100, a partition 200, a grid support plate 300, an activated sludge treatment device 400, a flocculant adding device 500, a filtering device 600 and a disinfecting device 700. A sewage flow channel 110 is arranged inside the pool body 100. The sewage flow channel 110 is arranged in a spiral shape. The end of the sewage flow channel 110 away from the spiral center is set as a water inlet end, and the end of the sewage flow channel 110 close to the spiral center is set as a water outlet end; the partition 200 is detachably arranged in the sewage flow channel 110, and the partition 200 divides the sewage flow channel 110 into a primary filtering chamber 111, an activated sludge treatment chamber 112, a sedimentation chamber 113, a secondary filtering chamber 114 and a disinfecting chamber 700. The activated sludge treatment chamber 115, the primary filtration chamber 111, the activated sludge treatment chamber 112, the sedimentation chamber 113, the secondary filtration chamber 114 and the disinfection chamber 115 are arranged in a stepped manner in sequence; the grid support plate 300 is connected to the tank body 100, and the grid support plate 300 is arranged above the sewage flow channel 110; the activated sludge treatment device 400 includes an activated sludge storage tank 410, an aeration pump 420 and a spreading head 430, and the spreading head 430 is provided with a plurality of, each spreading head 430 is connected to the air outlet end of the aeration pump 420 through a venturi tube 440, and the plurality of spreading heads 430 are evenly distributed along the path extension direction of the activated sludge treatment chamber 112, and the activated sludge storage tank 410 is connected to the venturi tube 4 40 is a narrow part, the activated sludge storage tank 410, the aeration pump 420 and the spreading head 430 are all arranged on the grid support plate 300; the flocculant adding device 500 includes a first water level detector 510, a bracket 520, a parallel feeding head 530, a first solenoid valve 540 and a discharge chute 550, the first water level detector 510 is arranged on the inner wall of the sedimentation chamber 113, the first water level detector 510 is used to detect the water level in the sedimentation chamber 113, the bracket 520 is detachably connected to the grid support plate 300, the discharge chute 550 is connected to the bracket 520, the discharge chute 550 is used to load the flocculant, and the parallel feeding head 530 is slidable along the path extension direction of the sedimentation chamber 113 The row of feeding heads 530 are arranged on the bracket 520, and are connected to the feeding trough 550 through the first solenoid valve 540. The pipeline between the first solenoid valve 540 and the feeding trough 550 is connected with a pump 560. The first solenoid valve 540 is electrically connected to the first water level detector 510. The first water level detector 510 is used to detect the water level of the sedimentation chamber 113 to control the opening and closing of the first solenoid valve 540. The pump 560 is used to pump the flocculant of the feeding trough 550 into the row of feeding heads 530. The row of feeding heads 530 is used to add the flocculant to the sedimentation chamber 113. The filtering device 600 is loaded on the upper end of the secondary filtering chamber 114, and the filtering device 600 is used to filter the water discharged from the sedimentation chamber 113.The disinfection device 700 includes a second water level detector 710, a loading bucket 720, a second solenoid valve 730 and a stirring assembly 740. The second water level detector 710 is arranged on the inner wall of the disinfection chamber 115. The loading bucket 720 and the stirring assembly 740 are both arranged on the grid support plate 300. The stirring head of the stirring assembly 740 extends into the disinfection chamber 115. The loading bucket 720 is connected to the second solenoid valve 730 through a hose. The second water level detector 710 is electrically connected to the second solenoid valve 730. The second water level detector 710 is used to detect the water level to control the opening and closing of the second solenoid valve 730. The stirring assembly 740 is used to stir the water in the disinfection chamber 115. ;

[0041] It should be understood that the set tank body 100 integrates the activated sludge treatment device 400, the flocculant adding device 500, the filtering device 600 and the disinfection device 700. Through the spirally arranged sewage flow channel 110, the purpose of centrally installing each device is achieved, so that the floor area of ​​the entire sewage treatment tank is reduced, and the set activated sludge treatment device 400 can add activated sludge to the sewage through the Venturi effect, and can aerate while adding activated sludge, thereby increasing the sewage treatment speed. The set flocculant adding device 500 realizes uniform feeding through the sliding of the row of feeding heads 530, ensuring the sewage flocculation effect, thereby ensuring the sedimentation effect. The stirring assembly 740 on the disinfection device 700 makes the disinfection more thorough and uniform through stirring. The specific structural settings of the activated sludge treatment device 400, the flocculant adding device 500 and the disinfection device 700 are simple, and are convenient to be installed on the grid support plate 300. The modular design facilitates installation and use.

[0042] It should be noted that the pool body 100 is movable, and can also be built directly on the bottom surface or below the ground. The grid support plate 300 is a support plate covering the pool body 100, which can be used to prevent people from accidentally falling into the pool body 100 and provide support for various devices. The so-called grid support plate 300 refers to a support plate with grid through holes, and the grid support plate 300 can also be replaced with a completely closed plate as needed. The activated sludge treatment device 400 is mainly used to add activated sludge to organic sewage for biodegradation, mainly aerobic bacteria to degrade organic matter in organic sewage, thereby cultivating more aerobic bacteria and increasing activated sludge for easy recycling. Among them, the partition 200 is detachable, and the partition 200 is opened or closed as needed. Since the present application is set as each cavity in a stepped form, the partition 200 is preferably a closed partition to separate two adjacent chambers.

[0043] It can be understood that a grid is provided inside the primary filter chamber 111, and the grid is used to filter out large debris in the sewage to ensure smooth subsequent treatment. The coupling feeding head 530 is used to evenly distribute the flocculant on the sewage surface to achieve a better flocculation effect. The so-called pump 560 can be an ordinary pump or a vibrating conveyor, etc. The electrical connection method between the water level detector and the solenoid valve is a conventional electrical connection method, and the purpose is to open the solenoid valve when the water level reaches a predetermined position to achieve the addition of corresponding materials. The loading bucket 720 is used to load disinfectant or disinfected solid particles, etc.

[0044] In some embodiments, the disinfection device 700 may also be an ultraviolet lamp device that disinfects water by light irradiation, and the disinfected water is discharged through a pump or a siphon.

[0045] Reference Figure 2 A mud guiding slope 113a is provided at the bottom of the sedimentation chamber 113, and a mud guiding hole 113b is opened on the side wall of the sedimentation chamber 113. The mud guiding hole 113b is connected to the sedimentation chamber 113, and the mud guiding hole 113b is connected to a relatively low position of the mud guiding slope 113a. The mud guiding hole 113b is connected to a sludge pumper 113c, and the sludge pumper 113c is connected to the activated sludge storage tank 410. The sludge pumper 113c is used to pump the sludge at the bottom of the sedimentation chamber 113 to the activated sludge storage tank 410. The sludge pumper 113c can make full use of the activated sludge, and the mud guiding slope 113a is set to realize the aggregation of sludge, which is convenient for the absorption and discharge of sludge.

[0046] In some embodiments, the grid support plate 300 is detachably connected to the pool body 100 , so as to achieve modular installation and disassembly of the entire grid support plate 300 .

[0047] In some embodiments, the height of the activated sludge storage tank 410 is higher than the height of the venturi tube 440 , and the gravitational potential energy of the activated sludge storage tank 410 can be used to add activated sludge.

[0048] Reference Figure 1 and Figure 6The spreading head 430 includes a cavity shell 431 and a turbine rotor 432. The turbine rotor 432 is rotatably connected to the cavity shell 431. The cavity shell 431 is cylindrical. The outer edge of the circumference of the cavity shell 431 is connected to an L-shaped elbow 433. The elbow 433 is connected to the venturi tube 440. A plurality of liquid outlet holes 434 are opened on the circumferential wall of the cavity shell 431. The liquid outlet holes 434 are evenly distributed around the circumference of the cavity shell 431. The liquid outlet holes 434 are connected to the cavity shell 431. The turbine rotor 432 is rotatably connected to the cavity shell 431. The rotating shaft of the sub 432 is coaxially arranged with the axis of the cavity shell 431. The structure of the spreading head 430 is simple. The turbine rotor 432 is used to spread the activated sludge, and the spreading is more uniform. It can be understood that after the pressurized fluid enters the cavity shell 431, it acts on the turbine rotor 432. The turbine rotor 432 can rotate and throw the fluid out from the liquid outlet 434. Because the spreading head 430 is submerged in the water, it can have both the aeration effect and the effect of spreading the activated sludge.

[0049] Reference Figure 2 and Figure 4 The row feeding head 530 is arranged in a rectangular shape, the length direction of the row feeding head 530 extends along the width direction of the precipitation chamber 113, the interior of the row feeding head 530 is arranged to be hollow, the upper end of the row feeding head 530 is provided with a connecting hole 531, the connecting hole 531 is used to connect to the discharge chute 550 through the first solenoid valve 540, and the lower end of the row feeding head 530 is provided with a plurality of leakage holes 532, and the plurality of leakage holes 532 are distributed along the length direction of the row feeding head 530.

[0050] In some embodiments, track clamping holes 533 are opened on both side ends of the row feeding heads 530, and track clamping wheels 534 are rotatably arranged in the track clamping holes 533. A track 521 is arranged on the bracket 520, and the track is used to pass through the track clamping holes 533. The track clamping wheels 534 are clamped on the track 521. The set track 521 limits the sliding of the row feeding heads 530 and guides the row feeding heads 530 so that the row feeding heads 530 can evenly add flocculants.

[0051] Reference Figure 5 The filter device 600 includes a mounting shell 610, in which a plurality of adjacent mounting grooves 611 are arranged, each mounting groove 611 is connected, and the mounting groove 611 is used to load the filter medium. A placement step 114a is provided at the upper end of the secondary filter chamber 114, and the mounting shell 610 is arranged on the placement step 114a. The plurality of mounting grooves 611 are distributed from top to bottom. The filter device 600 has a simple structure and is easy to install and use. It can be understood that the filter medium includes sand, cotton cloth, asbestos, activated carbon, etc.

[0052] In some embodiments, the pool body 100 is made of stainless steel, and a pulley 120 is disposed at the bottom of the pool body 100 .

[0053] In some embodiments, the grid support plate 300 is detachably connected to the pool body 100 .

[0054] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A sewage treatment pool, characterized in that: include: A pool body (100) is provided with a sewage flow channel (110) therein, wherein the sewage flow channel (110) is arranged in a spiral shape, an end of the sewage flow channel (110) away from the spiral center is arranged as a water inlet end, and an end of the sewage flow channel (110) close to the spiral center is arranged as a water outlet end; a partition (200) detachably disposed in the sewage flow channel (110), the partition (200) dividing the sewage flow channel (110) into a primary filter chamber (111), an activated sludge treatment chamber (112), a sedimentation chamber (113), a secondary filter chamber (114) and a disinfection chamber (115), wherein the primary filter chamber (111), the activated sludge treatment chamber (112), the sedimentation chamber (113), the secondary filter chamber (114) and the disinfection chamber (115) are sequentially arranged in a stepped manner; A grid support plate (300) connected to the pool body (100), wherein the grid support plate (300) is arranged above the sewage flow channel (110); An activated sludge treatment device (400) comprises an activated sludge storage tank (410), an aeration pump (420) and a spreading head (430), wherein a plurality of the spreading heads (430) are provided, each of the spreading heads (430) is connected to the air outlet end of the aeration pump (420) via a venturi tube (440), and the plurality of spreading heads (430) are evenly distributed along the path extension direction of the activated sludge treatment chamber (112); the activated sludge storage tank (410) is connected to the narrowing part of the venturi tube (440), and the activated sludge storage tank (410), the aeration pump (420) and the spreading head (430) are all arranged on the grid support plate (300); The flocculant adding device (500) comprises a first water level detector (510), a bracket (520), a row of feeding heads (530), a first solenoid valve (540) and a feeding trough (550), wherein the first water level detector (510) is arranged on the inner wall of the sedimentation chamber (113), and the first water level detector (510) is used to detect the water level in the sedimentation chamber (113); the bracket (520) is detachably connected to the grid support plate (300); the feeding trough (550) is connected to the bracket (520), and the feeding trough (550) is used to load the flocculant; the row of feeding heads (530) is slidably arranged on the inner wall of the sedimentation chamber (113) along the path extension direction of the sedimentation chamber (113); On the bracket (520), the row of feeding heads (530) is connected to the feeding trough (550) through the first solenoid valve (540), a pump (560) is connected to the pipeline between the first solenoid valve (540) and the feeding trough (550), the first solenoid valve (540) is electrically connected to the first water level detector (510), the first water level detector (510) is used to detect the water level of the sedimentation chamber (113) to control the opening and closing of the first solenoid valve (540), the pump (560) is used to pump the flocculant of the feeding trough (550) into the row of feeding heads (530), and the row of feeding heads (530) is used to add the flocculant to the sedimentation chamber (113); A filtering device (600) is mounted on the upper end of the secondary filtering chamber (114), and the filtering device (600) is used to filter the water discharged from the sedimentation chamber (113); The disinfection device (700) comprises a second water level detector (710), a loading bucket (720), a second solenoid valve (730) and a stirring assembly (740), wherein the second water level detector (710) is arranged on the inner wall of the disinfection chamber (115), the loading bucket (720) and the stirring assembly (740) are both arranged on the grid support plate (300), the stirring head of the stirring assembly (740) extends into the disinfection chamber (115), the loading bucket (720) is connected to the second solenoid valve (730) through a hose, the second water level detector (710) is electrically connected to the second solenoid valve (730), the second water level detector (710) is used to detect the water level to control the opening and closing of the second solenoid valve (730), and the stirring assembly (740) is used to stir the water in the disinfection chamber (115).

2. The sewage treatment tank according to claim 1, characterized in that: The bottom of the sedimentation chamber (113) is provided with a mud guiding slope (113a), and the side wall of the sedimentation chamber (113) is provided with a mud guiding hole (113b), the mud guiding hole (113b) is connected to the sedimentation chamber (113), the mud guiding hole (113b) is connected to a relatively low position of the mud guiding slope (113a), the mud guiding hole (113b) is connected to a sludge pump (113c), the sludge pump (113c) is connected to the activated sludge storage tank (410), and the sludge pump (113c) is used to pump the sludge at the bottom of the sedimentation chamber (113) to the activated sludge storage tank (410).

3. The sewage treatment tank according to claim 2, characterized in that: The grid support plate (300) is detachably connected to the pool body (100).

4. The sewage treatment tank according to claim 3, characterized in that: The height of the activated sludge storage tank (410) is higher than the height of the venturi tube (440).

5. The sewage treatment tank according to claim 4, characterized in that: The spreading head (430) comprises a cavity shell (431) and a turbine rotor (432), wherein the turbine rotor (432) is rotatably connected to the cavity shell (431), the cavity shell (431) is arranged in a cylindrical shape, the circumferential outer edge of the cavity shell (431) is connected to an L-shaped curved pipe (433), the curved pipe (433) is connected to the venturi tube (440), a plurality of liquid outlet holes (434) are opened on the circumferential wall of the cavity shell (431), the liquid outlet holes (434) are evenly distributed around the circumference of the cavity shell (431), the liquid outlet holes (434) are connected to the cavity shell (431), and the rotation axis of the turbine rotor (432) is coaxially arranged with the axis of the cavity shell (431).

6. The sewage treatment tank according to any one of claims 1 to 5, characterized in that: The row of feeding heads (530) is arranged in a rectangular parallelepiped shape, the length direction of the row of feeding heads (530) extends along the width direction of the precipitation chamber (113), the interior of the row of feeding heads (530) is arranged to be hollow, a connecting hole (531) is arranged at the upper end of the row of feeding heads (530), and the connecting hole (531) is used to connect to the feed chute (550) through the first solenoid valve (540), and a plurality of leakage holes (532) are arranged at the lower end of the row of feeding heads (530), and the plurality of leakage holes (532) are distributed along the length direction of the row of feeding heads (530).

7. The sewage treatment tank according to claim 6, characterized in that: The two side ends of the row feeding head (530) are provided with track clamping holes (533), and the track clamping wheels (534) are rotatably arranged in the track clamping holes (533). The bracket (520) is provided with a track (521), and the track is used to pass through the track clamping holes (533), and the track clamping wheels (534) are clamped on the track (521).

8. The sewage treatment tank according to claim 1, characterized in that: The filtering device (600) comprises a mounting shell (610), wherein a plurality of adjacent mounting grooves (611) are arranged in the mounting shell (610), each mounting groove (611) is arranged in communication, and the mounting grooves (611) are used to load filtering media. A placement step (114a) is arranged at the upper end of the secondary filtering cavity (114), and the mounting shell (610) is arranged on the placement step (114a), and the plurality of mounting grooves (611) are distributed from top to bottom.

9. The sewage treatment tank according to claim 1, characterized in that: The pool body (100) is made of stainless steel, and a pulley (120) is provided at the bottom of the pool body (100).

10. The sewage treatment tank according to claim 1, characterized in that: The grid support plate (300) is detachably connected to the pool body (100).

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