Hydrolytic acidification microbiological treatment tank

Abstract

The invention discloses a hydrolytic acidification microbiological treatment pond, and relates to the field of hydrolytic acidification pond application, the hydrolytic acidification microbiological treatment pond comprises a pond body, the inner side of the pond body is provided with a water inlet header pipe, the water inlet header pipe is connected with a plurality of groups of water distributors, each water distributor comprises an annular water distribution pipe, the pond body is internally provided with a grating frame, and the grating frame comprises a plurality of groups of grating spaces; and a bearing plate is arranged at the top of each group of grating space. By arranging the grating frame, laying the bearing plate and the stirring structure, local sedimentation of a sludge layer can be reduced, the sludge layer can be supported and borne, sludge sedimentation can be reduced, when waste water is sprayed out through a water spraying opening of an annular water distribution pipe of the water distributor, the waste water impacts a paddle outside a movable rod to drive the paddle to rotate slowly, and the waste water can be stirred gently; suspended solids in the wastewater are distributed more uniformly, and the turbulence phenomenon caused by non-uniform distribution of the suspended solids in the wastewater is reduced.

Description

A hydrolysis acidification microbial treatment tank Technical Field

[0001] This invention relates to the field of hydrolysis acidification tank applications, specifically a hydrolysis acidification microbial treatment tank. Background Technology

[0002] The hydrolysis acidification tank is the core pretreatment unit at the front end of anaerobic biological treatment in wastewater treatment. It belongs to the incomplete anaerobic biological treatment process. It uses the hydrolysis and acidification of anaerobic bacteria to decompose the large molecular organic matter in wastewater that is difficult to degrade into small molecular organic matter that is easy to degrade. At the same time, it removes some COD / BOD and intercepts suspended solids. The core purpose is to improve the biodegradability of wastewater, reduce the burden on subsequent aerobic biological treatment (such as activated sludge process and biological contact oxidation tank), and make subsequent processes more efficient.

[0003] Currently, the mainstream processes for hydrolysis acidification tanks on the market mainly include fully mixed reaction, upflow reaction, and combined reaction. Taking a combined reaction tank (total height 5m) for treating municipal sewage or low-to-medium concentration, stable industrial wastewater as an example: a multi-point water distributor is installed 0.3m from the bottom of the tank. The water distributor nozzles are usually tilted downwards or vertically downwards. This eliminates the pressure of the wastewater jets, prevents small amounts of sludge from settling and clogging the nozzles, and avoids the wastewater directly impacting the sludge layer. The wastewater is evenly added to the reaction tank and flows upwards to achieve upflow. The lifting force of the upflow prevents the sludge layer from settling. Above the water distributor at the bottom of the tank... A 0.3-1.5m thick sludge layer, 1.2m in thickness, is set up. The main body of the sludge layer is anaerobic activated sludge, dominated by hydrolytic and acid-producing bacteria. The bacteria are attached to the surface of the sludge particles and are mostly flocculent. This sludge simultaneously traps most of the suspended solids (SS), colloidal substances, and some recalcitrant macromolecular organic matter in the wastewater. These trapped substances are gradually decomposed by the bacteria. Above the sludge layer, a 1.5-3.3m thick suspended layer is set up. This suspended layer is formed by the hydraulic impact and agitation of the sludge layer and is the main reaction zone for hydrolysis and acidification. The main body of the suspended layer is anaerobic activated sludge in a suspended state, also controlled by water... The main anaerobic and acid-producing bacteria layer contains small-molecule organic matter that has undergone preliminary hydrolysis from the sludge layer, as well as residual large-molecule organic matter and a small amount of colloidal substances that were not retained by the sludge layer. This is the area where the organic matter reaction is most complete. Above the suspended layer, at intervals of 0.3-0.5m, a 1m thick packing layer is set. The artificial packing acts as a carrier and is the area where anaerobic biofilm accumulates. It is also the area for further enhancement of the hydrolysis and acidification reaction and sludge retention. This is the uppermost functional reaction zone in the tank. Unlike the suspended sludge carrier form of the sludge layer and the suspended layer, this layer uses the biofilm attached to the artificial packing as the core reaction body. Most of the hydrolysis and acidification of the sludge in the suspended layer is completed here. Water undergoes deep treatment here, while this layer traps a small amount of sludge that escapes from the suspended layer with the water flow. Finally, an overflow trough is set at the top of the tank to intercept the clear water layer above the packing layer. The hydrolysis acidification tank is also equipped with a return system. When the wastewater supply pressure is insufficient, the lifting force of the water distribution flow on the sludge layer will also decrease, causing the sludge layer to become unstable and sink. Particles in the sludge layer are prone to caking if they accumulate at the bottom of the tank for a long time. At this time, the return system uses an external water pump to send clear water back to the water distribution system. This not only allows for secondary acidification treatment of the substandard clear water, but also stabilizes the overall flow state of the acidification tank.

[0004] In practical applications of composite hydrolysis acidification tanks, although the multi-point water distribution system has the theoretical advantage of uniform water distribution, in actual operation, when wastewater naturally rises due to the reaction force from the bottom of the tank, although the overall flow is upward, due to factors such as differences in the installation of actual water distributors, deviations in water output, uneven distribution of suspended solids in the wastewater, blockages after long-term operation, and water eddies formed by the contact between the water flow and the tank wall, there will still be local turbulence (high-velocity surge or low-velocity dead water zone). That is, some of the rising wastewater will self-integrate and repeatedly surge and impact a certain point in the sludge layer. This is also the reason why the sludge layer will experience local settling and loss over time. In addition, in the hydrolysis acidification process, the wastewater supply pressure is constantly changing, especially in the field of municipal wastewater. This also causes the return system to be frequently started and stopped to stabilize the water pressure, which not only wastes energy but also affects the service life of the equipment. Summary of the Invention

[0005] Therefore, the purpose of this invention is to provide a hydrolysis acidification microbial treatment tank to solve the technical problems mentioned in the background.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hydrolysis acidification microbial treatment tank, comprising a tank body, an inlet main pipe provided on the inner side of the tank body, the inlet main pipe being connected to multiple sets of water distributors, each water distributor comprising multiple sets of annular water distribution pipes, with multiple sets of spray nozzles inclinedly arranged on the inner side of the annular water distribution pipes, the multiple sets of annular water distribution pipes being connected to each other by connecting pipes, each set of annular water distribution pipes having movable rods distributed on the inner side, the movable rods being rotatably connected to the bottom of the tank, the outer side of the movable rods having multiple sets of blades, the height of the blades being matched with the spray nozzles, and a stirrer being provided at the top of the movable rods, the stirrer having a... The pool is equipped with a water outlet. Inside the pool, there is a grid frame, which includes multiple grid spaces. Multiple sets of annular water distribution pipes of water distributors are distributed one-to-one within the grid spaces. Each grid space is topped with a support plate with circular holes. Each set of agitators is installed inside the circular holes. A sludge layer is placed on top of the multiple support plates. Above the sludge layer is a suspended layer. Above the suspended layer is a packing layer. An overflow trough is placed on top of the pool to intercept clean water. A water outlet weir is placed on the side of the pool. The water outlet weir is connected to the overflow trough for centralized discharge and delivery of clean water.

[0007] By adopting the above technical solution, the local settlement of the sludge layer can be reduced by setting up a grid frame, laying a support plate, and a mixing structure. The support plate is located between the water distributor and the sludge layer, which can support the sludge layer and reduce sludge settlement. When the wastewater is sprayed out through the spray nozzle of the annular water distribution pipe of the water distributor, the wastewater impacts the blades outside the movable rod, causing it to rotate slowly. This can gently stir the wastewater, making the distribution of suspended solids in the wastewater more uniform and reducing turbulence caused by uneven distribution of suspended solids in the wastewater. Secondly, it can drive the funnel-shaped agitator to rotate. The upper edge of the agitator extends to the top of the support plate, which can reduce the active deposition of sludge in the sludge layer and block the round holes (without the mixing structure, the round holes are easily blocked by sludge during long-term operation of the project), and also reduce the sludge settling and hardening on the surface of the support plate.

[0008] The present invention is further configured such that multiple sets of water nozzles are evenly distributed inside the annular water distribution pipe, and the multiple sets of water nozzles are inclined in both the horizontal and vertical directions.

[0009] Preferably, by setting water nozzles that are inclined in both the horizontal and vertical directions, the water can be used to both impact and drive the blades to rotate, and to prevent wastewater from directly impacting the sludge layer.

[0010] The present invention is further configured such that the multiple sets of connecting pipes of the water distributor are all installed on the bottom of the pool by means of a bracket.

[0011] Preferably, a support frame is used to stably install the water distributor at the bottom of the pool, and then the wastewater is distributed evenly at multiple points.

[0012] The present invention is further configured such that the circular hole size of the stirrer and the support plate are matched, and the upper edge of the stirrer extends to the top of the support plate.

[0013] Preferably, by using an agitator to stir the circular holes, the active adhesion of the sludge layer to the edge of the holes can be reduced and local caking can be reduced.

[0014] The present invention is further configured such that the packing layer is installed inside the tank body by setting a packing mounting frame, and the top of the packing mounting frame is connected to a lifting mechanism, which is installed on the top of the tank body to adjust the height of the packing mounting frame.

[0015] Preferably, the traditional packing layer is installed using a fixed frame, while this application provides a lifting structure to adjust the height of the packing installation frame. This not only adjusts the height of the water flow regulating plate, but also makes cleaning and replacing the packing more convenient.

[0016] The present invention is further configured such that the bottom of the packing mounting frame is provided with multiple sets of water volume regulating plates, each set of water volume regulating plates corresponding to a set of agitators, and the multiple sets of water volume regulating plates are suspended above the agitators.

[0017] Preferably, by setting a water flow regulating plate, the outlet pressure can be balanced when the wastewater supply changes by adjusting the size of the water outlet. In conjunction with the return system, the wastewater supply pressure is kept stable, thereby stably supporting the sludge layer.

[0018] The present invention is further configured such that the dimensions of the water flow regulating plate and the water outlet are matched, and the bottom of the water flow regulating plate is provided with an arc-shaped flow guide.

[0019] Preferably, by setting a water flow regulating plate that can guide the flow, the size of the water outlet can be controlled by slowly adjusting the height, thereby reducing its disturbance to the sludge layer.

[0020] The present invention is further configured such that a reflux system is provided on the side of the pool body, which realizes secondary treatment of clean water and stabilizes the wastewater supply pressure through internal reflux.

[0021] Preferably, by setting up a reflux system, clean water from a water pump or temporarily buffered substandard clean water is reintroduced into the acidification tank, which can stabilize the wastewater supply pressure.

[0022] In summary, the present invention has the following beneficial effects: 1. The present invention can reduce the local settling of the sludge layer by setting up a grid frame, laying a bearing plate, and a stirring structure. The bearing plate is located between the water distributor and the sludge layer to support the sludge layer. The bearing plate has round holes, and multiple bearing plates are spliced ​​together to cover the bottom of the pool. The water distributor includes multiple sets of annular water distribution pipes. The inner side of the annular water distribution pipes is horizontally inclined and downwardly inclined with multiple sets of water spray nozzles. Each set of annular water distribution pipes is installed below each set of bearing plates. A rotatable movable rod is installed inside each set of annular water distribution pipes. A paddle is installed on the outside of the movable rod, and a blade is installed on the top of the movable rod. The funnel-shaped agitator includes a water outlet and is positioned at the circular holes on the support plate. When wastewater is sprayed out through the nozzles of the annular water distribution pipe of the distributor, the wastewater impacts the blades outside the movable rod, causing it to rotate slowly. This serves two purposes: firstly, it gently agitates the wastewater, resulting in a more even distribution of suspended solids and reducing turbulence caused by uneven distribution of suspended solids; secondly, it drives the funnel-shaped agitator to rotate. The upper edge of the agitator extends to the top of the support plate, which reduces the active deposition of sludge in the sludge layer that can clog the circular holes (without this agitation structure, prolonged operation could easily lead to sludge clogging of the holes). This design not only reduces sludge settling and caking on the surface of the support plate, but also minimizes sludge settling and compaction. Compared to traditional acidification tanks without perforated support plates and stirring structures, which suffer from uneven water distribution, especially near the tank walls, the perforated support plate in this application directly supports the sludge layer, significantly reducing sludge settling near the tank walls. This reduced sludge settling decreases waste, and even if sludge does settle, it only settles through the perforations on the support plate. The sludge settling through these perforations is agitated by the paddles, preventing sludge from accumulating and adhering to the spray nozzles, thus reducing the risk of nozzle blockage. Furthermore, the support plate integrates... The wastewater, acting as an upflow, surges upward from the bottom of the support plate. The localized high-velocity surges or impacts on the support plate slow down the flow, ensuring that the wastewater flows upward in a strictly uniform manner according to the circular holes of all the support plates, rather than surging upward randomly and uncontrollably (such as multiple high-velocity surges in a certain area). It's similar to how a whole water curtain (equivalent to wastewater surging) impacts a wall surface (equivalent to a sludge layer). There are localized impacts of varying degrees, causing different degrees of erosion on the wall surface (equivalent to sludge layer settling). However, by using an installed plate structure, it can both support the wall surface and integrate the water curtain, minimizing and mitigating localized impact forces as much as possible.

[0023] The bar screen of this invention is not only used to install the support plate, but also to eliminate water distribution impact and disperse suspended solids in wastewater. In traditional water distribution systems without bar screens, pebbles are usually laid at the bottom of the pool. Wastewater impacts the pebble layer downwards to eliminate the impact force. However, the water flow is either horizontal or upward, and then flows upward as a whole, resulting in uneven water distribution in some areas. In contrast, each set of annular water distribution pipes and the support plate of the water distributor are installed in an independent bar screen space. The bar screen can alleviate the horizontal water distribution force and disperse suspended solids in the wastewater. Thus, in each bar screen space, the horizontal water distribution force is also reduced when impacting the bar screen, the mutual interference between adjacent annular water distribution pipes is reduced, and the overall wastewater distribution is upward.

[0024] This invention utilizes a water flow regulating plate positioned above the circular holes in each set of bearing plates to control and regulate the inflow of wastewater. The core of balancing wastewater supply pressure lies in the stable support of the sludge layer. Unstable wastewater supply pressure can lead to insufficient support and turbulent flow in the sludge layer. Therefore, existing technologies employ a recirculation system to address this issue. In this application, since the sludge layer sits on a plate structure with multiple sets of circular holes, controlling the size of the holes can also balance the water supply pressure. When the wastewater supply is sufficient, the water flow regulating plate moves away from the holes, allowing the wastewater to maintain a stable pressure and flow fully into the sludge layer. When the wastewater supply decreases (e.g., when urban water consumption decreases at night), the support force decreases. At this time, lowering the water flow regulating plate allows the top of the plate to prevent sludge settling, and reducing the size of the holes balances the outlet pressure, thus supporting the sludge. When used in conjunction with a recirculation system, this reduces the workload of the recirculation system. Attached Figure Description

[0025] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the internal structure of the pool of the present invention; Figure 3 is a schematic diagram of the distribution of the water distributor, bar grid, support plate, packing installation frame and water flow regulating plate of the present invention; Figure 4 is a schematic diagram of the overall structure of the bar grid of the present invention; Figure 5 is a schematic diagram of the distribution of the bar grid, annular water distribution pipe, support plate and water flow regulating plate of the present invention; Figure 6 is a schematic diagram of the distribution of the main inlet pipe, water distributor and bar grid of the present invention; Figure 7 is a schematic diagram of the structure of the water distributor of the present invention; Figure 8 is a schematic diagram of the distribution of the sludge layer, suspended layer and packing layer of the present invention; Figure 9 is a schematic diagram of the wastewater entering the sludge layer through the water outlet when the water flow regulating plate of the present invention is fully opened; Figure 10 is a schematic diagram of the wastewater entering the sludge layer through the water outlet when the water flow regulating plate of the present invention is lowered.

[0026] Explanation of reference numerals in the attached drawings: 1. Tank body; 2. Main inlet pipe; 3. Water distributor; 301. Annular water distribution pipe; 302. Spray nozzle; 303. Support; 304. Connecting pipe; 305. Movable rod; 306. Paddle; 307. Agitator; 308. Water outlet; 4. Grille frame; 5. Support plate; 6. Packing material mounting frame; 7. Lifting mechanism; 8. Water flow regulating plate; 9. Overflow trough; 10. Outlet weir; 11. Sludge layer; 12. Suspended layer; 13. Packing material layer. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] The embodiments of the present invention will now be described.

[0029] Please refer to Figures 1-10. A hydrolysis acidification microbial treatment tank includes a tank body 1. An inlet main pipe 2 is provided on the inner side of the tank body 1. The inlet main pipe 2 is connected to multiple sets of water distributors 3. Wastewater flows evenly to the multiple sets of water distributors 3 through the inlet main pipe 2. The water distributors 3 include multiple sets of annular water distribution pipes 301. Multiple sets of water nozzles 302 are inclined and downward on the inner side of the annular water distribution pipes 301. The multiple sets of annular water distribution pipes 301 are connected by connecting pipes 304. Movable rods 305 are distributed on the inner side of each set of annular water distribution pipes 301. The movable rods 305 are rotatably installed on the bottom of the tank by a base. Multiple sets of blades 306 are distributed on the outer side of the movable rods 305. The height of the blades 306 matches the height of the water nozzles 302, so that the wastewater jet impacts the blades 306 and drives the movable rods 305 to rotate. An agitator is provided on the top of the movable rods 305. The agitator 307 has a water outlet 308 in the middle. The inside of the tank body 1 is equipped with a grid frame 4, which includes multiple grid spaces. The annular water distribution pipes 301 of multiple water distributors 3 are distributed one-to-one in the grid spaces. Each grid space is equipped with a support plate 5 at the top. The support plate 5 has a circular hole. Each agitator 307 is installed inside the circular hole, but the agitator 307 does not fit the edge of the circular hole, leaving a certain installation gap. A sludge layer 11 is provided on the top of the multiple support plates 5. A suspended layer 12 is provided above the sludge layer 11. A packing layer 13 is provided above the suspended layer 12. An overflow trough 9 is provided on the top of the tank body 1. Multiple overflow troughs 9 can be provided. The overflow troughs 9 are used to intercept clean water. A water outlet weir 10 is provided on the side of the tank body 1. The water outlet weir 10 is connected to multiple overflow troughs 9 for centralized discharge and delivery of clean water.

[0030] In the above embodiment, please refer to Figure 7 for details. Multiple sets of spray nozzles 302 are evenly distributed inside the annular water distribution pipe 301. The multiple sets of spray nozzles 302 are inclined in both the horizontal and vertical directions. By setting the spray nozzles 302 that are inclined in both the horizontal and vertical directions, they are used to both impact and drive the blades 306 to rotate, and to prevent wastewater from directly impacting the sludge layer 11.

[0031] In the above embodiment, please refer to Figure 7 for details. The multiple sets of connecting pipes 304 of the water distributor 3 are all installed on the bottom of the pool by setting the bracket 303. The bracket 303 is used to stably install the water distributor 3 as a whole on the bottom of the pool body 1, and then distribute the wastewater evenly at multiple points.

[0032] In the above embodiment, specifically referring to Figure 5, the size of the circular hole of the agitator 307 and the support plate 5 are matched, and the upper edge of the agitator 307 extends to the top of the support plate 5. By setting the agitator 307 to agitate the circular hole, the active adhesion of the sludge layer 11 to the edge of the circular hole can be reduced and local caking can be reduced.

[0033] In the above embodiment, specifically referring to Figure 2, the packing layer 13 is installed inside the tank body 1 by setting a packing mounting frame 6, and the top of the packing mounting frame 6 is connected to a lifting mechanism 7. The lifting mechanism 7 is installed on the top of the tank body 1 to adjust the height of the packing mounting frame 6. The traditional packing layer 13 is installed by a fixed frame, while the present application sets a lifting mechanism 7 to adjust the height of the packing mounting frame 6. On the one hand, it adjusts the height of the water flow regulating plate 8, and on the other hand, it makes cleaning and replacing the packing more convenient.

[0034] In the above embodiment, please refer to Figures 2 and 5 for details. The bottom of the packing mounting frame 6 is provided with multiple sets of water flow regulating plates 8. The multiple sets of water flow regulating plates 8 correspond one-to-one with multiple sets of agitators 307, and the multiple sets of water flow regulating plates 8 are suspended above the agitators 307. By setting the water flow regulating plates 8, the outlet pressure when the wastewater supply changes can be balanced by adjusting the size of the water outlet 308. In conjunction with the return system, the wastewater supply pressure is ensured to be stable, thereby stably supporting the sludge layer 11.

[0035] In the above embodiments, please refer to Figures 9 and 10 for details. The water flow regulating plate 8 and the water outlet 308 are matched in size, and the bottom of the water flow regulating plate 8 is provided with an arc-shaped flow guide. By setting the water flow regulating plate 8 which can guide the flow, the size of the water outlet 308 can be controlled when the height is slowly adjusted, thereby reducing its disturbance to the sludge layer 11.

[0036] In the above embodiment, please refer to Figure 1 for details. A reflux system is provided on the side of the tank body 1. The internal reflux enables secondary treatment of clean water and stabilizes the wastewater supply pressure. By setting up the reflux system, clean water or temporarily buffered substandard clean water is pumped out and reintroduced into the acidification tank, which can stabilize the wastewater supply pressure.

[0037] In practical operation, wastewater enters the tank 1 through the main inlet pipe 2. The wastewater in the main inlet pipe 2 is then distributed into multiple annular distribution pipes 301 of the water distributor 3. The wastewater in the annular distribution pipes 301 is sprayed out through the spray nozzles 302, impacting the impeller 306. The rotation of the impeller 306 drives the movable rod 305 to rotate, which in turn drives the agitator 307 to rotate. The rotation of the impeller 306 agitates the wastewater, making the suspended solids in the wastewater more evenly distributed. The rotation of the agitator 307 reduces sludge sedimentation adhering to the edges of the circular holes in the support plate 5, and the agitator 307 extends to the top of the support plate 5. This also reduces sludge caking on the top of the bearing plate 5. The wastewater sprayed from each set of annular water distribution pipes 301 flows horizontally and is buffered and dispersed by the grid frame 4. Then, it flows upward from each independent grid space and rises through the water outlet 308 to the sludge layer 11. The wastewater reacts initially with the sludge layer 11 and then rises to the suspended layer 12 to react further with the suspended layer 12. Finally, it enters the packing layer 13 for the final reaction. The clear water layer above the packing layer 13 overflows into the overflow tank 9 and then flows into the effluent weir 10. Finally, it flows into the next process through the effluent weir 10.

[0038] When the acidification treatment project enters the nighttime water supply period and the water supply decreases, the reflux system needs to be activated. The water pump is used to re-pump and transport the substandard clean water back to the main water inlet pipe 2. This can not only perform secondary treatment on the clean water, but also stabilize the wastewater supply pressure. At this time, the height of the packing installation frame 6 is actively adjusted by the lifting mechanism 7, so that multiple sets of water volume regulating plates 8 are lowered synchronously. That is, the water volume regulating plates 8 block the water inflow outlet 308, reduce the outlet of the water inflow outlet 308, and make up for the water pressure at the water inflow outlet 308 as much as possible. At the same time, in conjunction with the operation of the reflux system, the wastewater supply volume and supply pressure can also effectively support the sludge layer 11 when they change dynamically.

[0039] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A hydrolysis acidification microbial treatment tank, comprising a tank body (1), characterized in that: The inner side of the pool body (1) is provided with a main water inlet pipe (2), which is connected to multiple sets of water distributors (3). Each water distributor (3) includes multiple sets of annular water distribution pipes (301). Multiple sets of water nozzles (302) are inclinedly arranged on the inner side of the annular water distribution pipes (301). The multiple sets of annular water distribution pipes (301) are connected by connecting pipes (304). Movable rods (305) are distributed on the inner side of each set of annular water distribution pipes (301). The movable rods (305) are rotatably connected to the bottom of the pool. Multiple sets of blades (306) are distributed on the outer side of the movable rods (305), and the height of the blades (306) matches the height of the water nozzles (302). A stirrer (307) is provided at the top of the movable rods (305), and a water outlet (308) is provided in the middle of the stirrer (307). The tank body (1) is equipped with a grid frame (4). The grid frame (4) includes multiple grid spaces. The annular water distribution pipes (301) of multiple water distributors (3) are distributed in the grid spaces one by one. Each grid space is equipped with a support plate (5) at the top. The support plate (5) has a round hole. Each agitator (307) is installed inside the round hole. The top of the multiple support plates (5) is equipped with a sludge layer (11). A suspended layer (12) is set above the sludge layer (11). A packing layer (13) is set above the suspended layer (12). The top of the tank body (1) is equipped with an overflow trough (9). The overflow trough (9) is used to intercept clean water. The side of the tank body (1) is equipped with an outlet weir (10). The outlet weir (10) and the overflow trough (9) are connected for centralized discharge and delivery of clean water.

2. The hydrolysis acidification microbial treatment tank according to claim 1, characterized in that: The multiple sets of water nozzles (302) inside the annular water distribution pipe (301) are evenly distributed, and the multiple sets of water nozzles (302) are inclined in both the horizontal and vertical directions.

3. The hydrolysis acidification microbial treatment tank according to claim 2, characterized in that: The multiple sets of connecting pipes (304) of the water distributor (3) are all installed at the bottom of the pool by setting brackets (303).

4. The hydrolysis acidification microbial treatment tank according to claim 3, characterized in that: The size of the circular hole of the stirrer (307) and the support plate (5) are matched, and the upper edge of the stirrer (307) extends to the top of the support plate (5).

5. The hydrolysis acidification microbial treatment tank according to claim 1, characterized in that: The packing layer (13) is installed inside the pool body (1) by setting a packing mounting bracket (6), and a lifting mechanism (7) is connected to the top of the packing mounting bracket (6). The lifting mechanism (7) is installed on the top of the pool body (1) to adjust the height of the packing mounting bracket (6).

6. The hydrolysis acidification microbial treatment tank according to claim 5, characterized in that: The bottom of the packing mounting bracket (6) is provided with multiple sets of water volume regulating plates (8), and the multiple sets of water volume regulating plates (8) correspond one-to-one with multiple sets of agitators (307), and the multiple sets of water volume regulating plates (8) are suspended above the agitators (307).

7. The hydrolysis acidification microbial treatment tank according to claim 6, characterized in that: The dimensions of the water flow regulating plate (8) and the water outlet (308) are matched, and the bottom of the water flow regulating plate (8) is provided with an arc-shaped flow guide.

8. The hydrolysis acidification microbial treatment tank according to claim 1, characterized in that: The side of the pool (1) is equipped with a reflux system, which realizes secondary treatment of clean water and stabilizes the wastewater supply pressure through internal reflux.

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