A backflushing and backwashing system and a hydrolysis acidification reactor

Abstract

This invention provides a backflushing and backwashing system and a hydrolysis acidification reactor, belonging to the field of backflushing and backwashing technology. It includes a water inlet system, a backflushing system, and a backwashing system. The water inlet system includes a water inlet pipe, a water distribution tank, and a water distribution pipe connected in sequence. A water inlet pump and a water inlet valve are installed on the water inlet pipe, and a water distribution valve is installed on the water distribution pipe. The backflushing system includes an air inlet pipe, an air distribution tank, and an air distribution pipe connected in sequence. A blower and a backflushing valve are installed on the air inlet pipe, and an air distribution valve is installed on the air distribution pipe. The backwashing system includes a backwashing pipe, a water distribution tank, and a water distribution pipe connected in sequence. A backwashing water pump and a backwashing valve are installed on the backwashing pipe, and a water distribution valve is installed on the water distribution pipe. The connection area between the water distribution pipe and the water distribution pipe is located downstream of the connection area between the air distribution pipe and the water distribution pipe. This invention provides a backflushing and backwashing system that effectively solves the problem of reduced transmission efficiency caused by impurity deposition in pipelines.

Description

Technical Field

[0001] This utility model belongs to the field of backflushing and backwashing technology, and more specifically, it relates to a backflushing and backwashing system and a hydrolysis acidification reactor. Background Technology

[0002] Pipelines, as flow-through components, are mainly used to transport gases and liquids, playing an indispensable role in energy transmission, water supply and drainage, chemical production and other fields.

[0003] During liquid transport, due to the viscosity and solubility of liquids, and the potential to carry suspended solids, microorganisms, and other substances, impurities, dirt, and deposits will gradually accumulate on the inner wall of the pipeline as the pipeline is used for an extended period of time.

[0004] The formation mechanism of these deposits is quite complex. On the one hand, insoluble particles naturally present in the liquid, such as silt and rust, will gradually settle and adhere to the inner wall of the pipe due to gravity when the flow rate decreases. On the other hand, certain substances dissolved in the liquid, such as calcium and magnesium ions, can form insoluble scale after changes in temperature and pressure or chemical reactions with other substances. In addition, microorganisms multiply rapidly in the suitable environment inside the pipe, and their metabolic products interact with other impurities, which also accelerates the formation of scale. The accumulation of these substances severely reduces transport efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a backflushing and backwashing system, which aims to solve the problem of impurities, dirt and deposits accumulating in pipelines, severely reducing transmission efficiency.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a backflush and backwash system, including a water inlet system, a backflush system, and a backwash system;

[0007] The water inlet system includes an inlet pipe, a water distribution trough, and a water distribution pipe connected sequentially along the water inlet direction. An inlet pump and an inlet valve are sequentially installed on the inlet pipe, and a water distribution valve is installed on the water distribution pipe.

[0008] The backflush system includes an air inlet pipe, an air distribution trough, and an air distribution pipe connected sequentially along the gas flow direction. A blower and a backflush valve are sequentially installed on the air inlet pipe, and an air distribution valve is installed on the air distribution pipe.

[0009] The backwashing system includes a backwashing pipe, a water distribution tank, and a water distribution pipe connected sequentially along the direction of flushing water flow. A backwashing water pump and a backwashing valve are sequentially installed on the backwashing pipe, and a water distribution valve is installed on the water distribution pipe.

[0010] The connection area between the water distribution pipe and the water distribution pipe is located downstream of the connection area between the gas distribution pipe and the water distribution pipe.

[0011] In one possible implementation, the water inlet pipe is positioned above the water distribution trough, and a water inlet flow meter is also installed on the water inlet pipe, with the water inlet flow meter located between the water inlet pump and the water inlet valve;

[0012] The water distribution pipe is located below the water distribution trough, and a water distribution flow meter is also installed on the water distribution pipe. The water distribution flow meter is located upstream of the water distribution valve.

[0013] In one possible implementation, the air intake pipe is disposed above the air distribution trough, and an air intake flow meter is also disposed on the air intake pipe, the air intake flow meter being located between the blower and the backflush valve;

[0014] The gas distribution pipe is located below the gas distribution trough, and a gas distribution flow meter is also installed on the gas distribution pipe. The gas distribution flow meter is located upstream of the gas distribution valve.

[0015] In one possible implementation, the backwash pipe is positioned above the water distribution tank, and a backwash flow meter is also installed on the backwash pipe, with the backwash flow meter located between the backwash water pump and the backwash valve.

[0016] The water distribution pipe is located below the water distribution tank, and a water distribution flow meter is installed on the water distribution pipe. The water distribution flow meter is located upstream of the water distribution valve.

[0017] In one possible implementation, the water distribution trough, the air distribution trough, and the water distribution trough are connected horizontally in sequence but are not interconnected.

[0018] In one possible implementation, the number of water distribution pipes, air distribution pipes, and water distribution pipes are all multiple and connected in a one-to-one correspondence.

[0019] In one possible implementation, the lower end of the water distribution pipe is provided with a horizontal bend, and a number of downward-facing water distributors are provided at intervals on the horizontal bend.

[0020] The beneficial effects of the backflushing and backwashing system provided by this utility model are as follows: Compared with the prior art, the series layout of the inlet pipe, water distribution tank, and water distribution pipe in the water inlet system, combined with the inlet pump and multi-stage valves, can ensure normal water flow. The backflushing system uses high-pressure gas generated by a blower to flow backwards into the water distribution pipe through the air inlet pipe, air distribution tank, and air distribution pipe. The high flow rate and expansion kinetic energy of the gas form a pulse backflushing, penetrating small pores and generating shear force on the colloidal and particulate dirt attached to the inner wall of the pipe, causing it to detach from the pipe wall. The distributed design ensures uniform airflow coverage without blind spots. The backwashing system is driven by a backwash water pump to flow backwards into the water distribution pipe through the backwash pipe, water distribution tank, and water distribution pipe. The kinetic energy of the water completely flushes out the impurities loosened by the backflushing. The connection area between the water distribution pipe and the water distribution pipe is located downstream of the air distribution pipe, realizing the sequential logic of air blowing → water flushing and eliminating cleaning blind spots in complex pipe structures. The backflushing and backwashing system provided by this utility model can effectively solve the problem of reduced transmission efficiency caused by the deposition of impurities in pipelines compared with traditional single cleaning methods.

[0021] This utility model also provides a hydrolysis acidification reactor, including the backflushing and backwashing system, wherein a packing unit is provided in the middle of the inner cavity of the hydrolysis acidification reactor, and the water distribution pipe runs longitudinally through the packing unit from top to bottom.

[0022] One possible implementation also includes a sludge removal system;

[0023] The sludge discharge system includes a sludge discharge pipe, a sludge pump, and a sludge suction pipe. The sludge pump is located outside the hydrolysis acidification reactor. The sludge discharge pipe is connected to the discharge end of the sludge pump and is equipped with a sludge discharge flow meter. The sludge suction pipe is connected to the suction end of the sludge pump and extends laterally into the hydrolysis acidification reactor and is located in the lower space of the packing unit.

[0024] In one possible implementation, the sludge suction pipe is provided with a sludge suction port and a sludge suction electric valve, the sludge suction port being located at the end of the sludge suction pipe away from the sludge pump, and the sludge suction electric valve being located outside the hydrolysis acidification reactor.

[0025] This utility model provides a hydrolysis acidification reactor. Compared with existing technologies, the inlet pipe, distribution tank, and distribution pipe of the backflushing and backwashing system are used to introduce sewage. The sewage is discharged into the lower space of the packing unit and flows from bottom to top through the packing unit. The packing unit provides ample space for the hydrolysis acidification biofilm to attach, allowing more microorganisms to attach and grow to form a biofilm. When the sewage flows through the packing body, it can fully contact the microorganisms attached to the biofilm, greatly improving the efficiency of the hydrolysis acidification reaction. Organic pollutants in the sewage can be decomposed and transformed by microorganisms more quickly and effectively, improving the reactor's ability to remove pollutants from the sewage, thereby improving the overall sewage treatment effect. As the operating time of the hydrolysis acidification reactor increases, the distribution pipe may gradually become clogged by impurities in the sewage, affecting the normal discharge and uniform distribution of sewage, thus reducing the efficiency of the hydrolysis acidification reaction. The water distribution pipes need to be cleaned regularly. The backflush and backwash system can be used to introduce high-pressure gas or liquid into the water distribution tank and water distribution pipes through the inlet pipe. This generates a strong impact force to flush away impurities adhering to the inner wall of the water distribution pipes, thus ensuring the operating efficiency of the hydrolysis acidification reactor. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of a backflush and backwash system provided in an embodiment of this utility model;

[0028] Figure 2 This is a schematic diagram of the structure of a hydrolysis acidification reactor provided in an embodiment of the present invention.

[0029] In the diagram: 1. Tank; 2. Packing unit; 3. Inlet pipe; 4. Inlet pump; 5. Inlet flow meter; 6. Inlet valve; 7. Distribution trough; 8. Distribution pipe; 9. Distribution flow meter; 10. Distribution valve; 11. Horizontal bend section; 12. Distributor; 13. Air inlet pipe; 14. Blower; 15. Air inlet flow meter; 16. Backflush valve; 17. Air distribution trough; 18. Air distribution pipe; 19. Air distribution flow meter; 20. Air distribution valve; 21. Backwash pipe; 22. Backwash water pump; 23. Backwash flow meter; 24. Backwash valve; 25. Distribution trough; 26. Distribution pipe; 27. Distribution flow meter; 28. Distribution valve; 29. ​​Sludge discharge pipe; 30. Sludge pump; 31. Suction pipe; 32. Suction port; 33. Suction electric valve; 34. Sludge discharge flow meter. Detailed Implementation

[0030] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] Unless otherwise explicitly specified, the use of terms such as "first," "second," or "third" is intended to distinguish different objects, not to describe a specific order.

[0032] Unless otherwise expressly defined, the use of directional terms such as “center,” “lateral,” “longitudinal,” “horizontal,” “vertical,” “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” “back,” “left,” “right,” “clockwise,” “counterclockwise,” “high,” and “low” to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of the present invention.

[0033] Please see Figure 1 The present invention will now describe a backflushing and backwashing system. A backflushing and backwashing system includes a water inlet system, a backflushing system, and a backwashing system. The water inlet system includes an inlet pipe 3, a water distribution trough 7, and a water distribution pipe 8 connected sequentially along the water inlet direction. An inlet pump 4 and an inlet valve 6 are sequentially installed on the inlet pipe 3, and a water distribution valve 10 is installed on the water distribution pipe 8. The backflushing system includes an air inlet pipe 13, an air distribution trough 17, and an air distribution pipe 18 connected sequentially along the gas flow direction. A blower 14 and a backflushing valve 16 are sequentially installed on the air inlet pipe 13, and an air distribution valve 20 is installed on the air distribution pipe 18. The backwashing system includes a backwashing pipe 21, a water distribution trough 25, and a water distribution pipe 26 connected sequentially along the flushing water flow direction. A backwashing water pump 22 and a backwashing valve 24 are sequentially installed on the backwashing pipe 21, and a water distribution valve 28 is installed on the water distribution pipe 26. The connection area between the water distribution pipe 26 and the water distribution pipe 8 is located downstream of the connection area between the air distribution pipe 18 and the water distribution pipe 8.

[0034] This utility model provides a backflushing and backwashing system. Compared with the prior art, the series arrangement of the inlet pipe 3, water distribution trough 7, and water distribution pipe 8 in the water inlet system, combined with the inlet pump 4 and multi-stage valves, can ensure normal water flow. The backflushing system utilizes high-pressure gas generated by the blower 14, which flows backward into the water distribution pipe 8 through the air inlet pipe 13, air distribution trough 17, and air distribution pipe 18. The high flow rate and expansion kinetic energy of the gas form a pulse backflushing, penetrating small pores and generating shear force on the colloidal and particulate dirt attached to the inner wall of the pipe, causing it to detach from the pipe wall. The distributed design ensures uniform airflow coverage without blind spots. The backwashing system is driven by the backwash water pump 22, which drives the water flow backward into the water distribution pipe 8 through the backwash pipe 21, water distribution trough 25, and water distribution pipe 26. The kinetic energy of the water flow thoroughly flushes out the impurities loosened by the backflushing. The connection area between the water distribution pipe 26 and the water distribution pipe 8 is located downstream of the air distribution pipe 18, realizing the sequential logic of air blowing → water flushing and eliminating cleaning blind spots in the complex structure of the pipeline. The backflushing and backwashing system provided by this utility model can effectively solve the problem of reduced transmission efficiency caused by the deposition of impurities in the pipeline compared with the traditional single cleaning method.

[0035] Meanwhile, the backflushing and backwashing system supports online cleaning, reducing production interruption losses; non-contact cleaning avoids pipeline damage and extends equipment life; pipeline resistance is reduced after cleaning, achieving energy saving and consumption reduction. It has been optimized from multiple dimensions such as cleaning effect, equipment protection and operating costs, providing a guarantee for the long-term stable operation of fluid transportation systems and can be widely adapted to various application scenarios.

[0036] The vertically distributed design of the inlet pipe 3 and the water distribution trough 7, along with the placement of the inlet flow meter 5 and the water distribution flow meter 9, provides more precise and efficient control and monitoring for the backflushing and backwashing system. The inlet pipe 3 is positioned above the water distribution trough 7, utilizing gravity to ensure smoother water flow. This avoids increased water flow resistance or obstructed flow caused by improper pipe layout, ensuring the stability of the water intake process. The inlet flow meter 5, located on the inlet pipe 3 between the inlet pump 4 and the inlet valve 6, monitors the inlet flow rate in real time. Operators can precisely adjust the inlet speed and flow rate based on actual needs, using the inlet pump 4 and the inlet valve 6, combined with the inlet flow rate data. This enables refined management of the water intake system and ensures efficient operation of the water intake process.

[0037] The water distribution pipe 8 is located below the water distribution trough 7. Gravity also promotes the rapid and even flow of water from the trough 7 into the pipe 8, achieving efficient water distribution. The water distribution flow meter 9 is located upstream of the water distribution valve 10, accurately measuring the flow rate entering the pipe 8. This helps operators monitor the flow status of the water distribution process. If abnormal flow occurs, it can be quickly adjusted via the valve 10 to ensure uniformity and stability of the water distribution, preventing insufficient flushing force in some areas due to uneven distribution, which would affect the cleaning effect on impurities in the pipes. The dual monitoring by the inlet flow meter 5 and the water distribution flow meter 9 allows for timely detection of water leaks, blockages, and other problems in the water distribution trough 7 and pipe 8 by comparing their data. This facilitates quick fault location and repair, further improving the reliability and ease of maintenance of the entire backflushing system.

[0038] The vertical arrangement of the air inlet pipe 13 with the air distribution channel 17 and air distribution pipe 18, along with the installation of the air inlet flow meter 15 and the air distribution flow meter 19, greatly enhances the controllability and cleaning efficiency of the backflushing system. The air inlet flow meter 15, installed between the blower 14 and the backflushing valve 16, can accurately monitor the air inlet flow in real time. Operators can flexibly adjust the air inlet speed and flow rate according to cleaning needs and the air inlet flow data through the blower 14 and the backflushing valve 16, achieving precise control of the backflushing system and ensuring stable operation of the backflushing process.

[0039] The gas distribution pipe 18 is located below the gas distribution trough 17, which helps the gas to flow quickly and evenly from the trough 17 into the pipe 18, achieving efficient gas distribution. The gas flow meter 19 is located upstream of the gas distribution valve 20, which can accurately measure the gas flow rate entering the gas distribution pipe 18, allowing operators to keep abreast of the gas status in the gas distribution process. If any abnormal flow occurs, it can be quickly adjusted through the gas distribution valve 20 to ensure the uniformity and stability of the gas distribution, and to avoid insufficient backflushing in some areas due to uneven gas distribution, which would affect the cleaning effect on stubborn impurities in the pipeline.

[0040] The vertical arrangement of the backwash pipe 21 with the water distribution tank 25 and water distribution pipe 26, combined with the configuration of the backwash flow meter 23 and the water distribution flow meter 27, brings significant performance improvement and operational assurance to the backwash system. The backwash pipe 21 is positioned above the water distribution tank 25, allowing backwash water to flow smoothly and quickly into the tank using gravity, reducing energy loss and resistance during pipeline transmission and ensuring the stability and timeliness of the backwash water supply. The backwash flow meter 23, installed between the backwash water pump 22 and the backwash valve 24, can accurately monitor the backwash water flow rate in real time. Operators can flexibly adjust the backwash water velocity and flow rate through the backwash water pump 22 and the backwash valve 24 based on cleaning needs and the backwash flow data, achieving precise control of the backwash system and ensuring efficient operation of the backwash process.

[0041] The water distribution pipe 26 is located below the water distribution tank 25, which ensures that the backwash water flows evenly and efficiently from the water distribution tank 25 into the water distribution pipe 26, thereby achieving a thorough flushing of the water distribution pipe 8. The water flow meter 27 is located upstream of the water distribution valve 28, which can accurately measure the flow rate of the backwash water entering the water distribution pipe 26, allowing operators to monitor the water flow status in the water distribution process in real time. If an abnormal flow occurs, it can be quickly adjusted through the water distribution valve 28 to ensure even distribution of backwash water and avoid incomplete flushing of some pipes due to uneven water distribution, which would affect the backwashing effect.

[0042] The design of the water distribution tank 7, air distribution tank 17, and water distribution tank 25, which are horizontally connected but not interconnected, creates a modular structure for the backflushing and backwashing system that is both functionally independent and spatially integrated. This reduces the system's footprint, making it particularly suitable for space-constrained installation scenarios. It also facilitates centralized pipe layout and routing planning, reducing the risk of fluid interference caused by pipe crossings. Furthermore, the design that prevents the three from interconnecting fundamentally avoids the mixing of different media (inlet water, backflushing gas, and backwash water) within the tanks, ensuring the independence of each subsystem's function.

[0043] The system comprises multiple water distribution pipes 8, air distribution pipes 18, and water distribution pipes 26, all connected in a one-to-one manner. This parallel arrangement of multiple water distribution pipes 8, air distribution pipes 18, and water distribution pipes 26 decomposes the water flow, air flow, and backwash water into multiple independent fluid streams, each connected to different areas of the target pipeline. Furthermore, the multi-pipeline design reduces the fluid velocity and pressure load within a single pipe, avoiding turbulence noise or equipment damage caused by excessive flow in a single pipe. This breaks down large-scale cleaning tasks into multiple precise and controllable sub-tasks, meeting the cleaning needs of complex pipe networks while achieving a balance between system performance and maintenance costs through modular design, providing technical support for the long-term operation of the fluid delivery system.

[0044] The lower end of the water distribution pipe 8 is provided with a horizontal bend section 11, on which several downward-facing water distributors 12 are spaced apart. The horizontal bend section 11 changes the direction of water flow, causing the water flow in the water distribution pipe 8 to change from vertical to horizontal. Utilizing the inertial force generated when the fluid changes direction, the water flow is more evenly distributed to each water distributor 12. Compared to the vertically arranged water distribution pipe 8, the horizontal bend section 11 can prevent the water flow from concentrating downwards to the lower water distributors 12 due to gravity, thereby ensuring that each water distributor 12 receives a relatively balanced flow rate and guaranteeing a stable flushing effect across the entire cross-section of the pipe.

[0045] Please see Figure 2Based on the same inventive concept, this utility model also provides a hydrolysis acidification reactor, including the aforementioned backflushing and backwashing system. A packing unit 2 is disposed in the center of the inner cavity of the hydrolysis acidification reactor, and a water distribution pipe 8 runs longitudinally through the packing unit 2 from top to bottom. The hydrolysis acidification reactor comprises a tank 1, an inlet pipe 3 of the backflushing and backwashing system, a water distribution trough 7, and a water distribution pipe 8 into which wastewater is introduced. The water distribution pipe 8 is located within the inner cavity of the tank 1 and runs longitudinally through the packing unit 2. Wastewater is discharged into the lower space of the packing unit 2 and then flows upward through the packing unit 2. The packing unit 2 provides ample attachment space for the hydrolysis acidification biofilm, allowing more microorganisms to attach and grow to form a biofilm. When wastewater flows through the packing unit 2, it can fully contact the microorganisms attached to the biofilm, greatly improving the efficiency of the hydrolysis acidification reaction. Organic pollutants in the wastewater can be decomposed and transformed by microorganisms more quickly and effectively, improving the reactor's ability to remove pollutants from wastewater, thereby improving the overall wastewater treatment effect. As the hydrolysis acidification reactor operates for longer periods, the water distribution pipe 8 may gradually become clogged with impurities in the wastewater, affecting the normal discharge and uniform distribution of wastewater, thereby reducing the efficiency of the hydrolysis acidification reaction. Regular cleaning of the water distribution pipe 8 is necessary. Using the backflushing and backwashing system, high-pressure gas or liquid is introduced into the water distribution tank 7 and water distribution pipe 8 through the inlet pipe 3, generating a strong impact force to flush away impurities adhering to the inner wall of the water distribution pipe 8, ensuring the operating efficiency of the hydrolysis acidification reactor.

[0046] The hydrolysis acidification reactor also includes a sludge discharge system; the sludge discharge system includes a sludge discharge pipe 29, a sludge pump 30, and a sludge suction pipe 31. The sludge pump 30 is located outside the hydrolysis acidification reactor, the sludge discharge pipe 29 is connected to the discharge end of the sludge pump 30, and a sludge discharge flow meter 34 is installed on the sludge discharge pipe 29. The sludge suction pipe 31 is connected to the suction end of the sludge pump 30. The sludge suction pipe 31 extends laterally into the hydrolysis acidification reactor and is located in the lower space of the packing unit 2, complementing the backflushing and backwashing system. From the perspective of sludge management and equipment maintenance, this further improves the reactor's operating efficiency and effectively solves problems such as decreased treatment efficiency and equipment blockage caused by sludge accumulation.

[0047] The sludge removal system establishes an active sludge removal mechanism through the coordinated operation of sludge pump 30, suction pipe 31, and discharge pipe 29. Suction pipe 31 extends laterally into the lower space of packing unit 2, which is the main accumulation area for sludge deposition and detachment of aged biofilm. After sludge pump 30 starts, it uses negative pressure to rapidly draw the high-concentration sludge, detached biofilm, and impurities from the bottom of packing unit 2 into suction pipe 31, and then discharges them from the reactor through discharge pipe 29. Sludge flow meter 34 monitors the discharge flow rate in real time. Operators can flexibly adjust the working intensity of sludge pump 30 according to the reactor's operating status (such as sludge concentration and treatment load) to avoid excessive sludge accumulation affecting the efficiency of the hydrolysis and acidification reaction, while also preventing excessive sludge discharge that could lead to microbial loss.

[0048] The suction pipe 31 is equipped with a suction port 32 and a suction electric valve 33. The suction port 32 is located at the end of the suction pipe 31 furthest from the sludge pump 30, allowing it to reach the sludge accumulation area at the bottom of the packing unit 2 as close as possible, ensuring efficient sludge extraction. The suction port 32 directly targets the area with the most severe sludge deposition. Under the negative pressure of the sludge pump 30, it can quickly draw high-concentration sludge and impurities into the suction pipe 31, avoiding insufficient suction and incomplete sludge extraction due to excessive distance. Simultaneously, its position design allows the suction process to create a directional flush on the bottom of the packing unit 2, helping to loosen stubborn sludge adhering to the bottom of the tank 1 and further improving the sludge discharge effect. The suction electric valve 33 is located outside the hydrolysis acidification reactor, providing operators with a convenient remote control method. By opening and closing the electric valve, the sludge discharge operation can be started or stopped at any time, flexibly adjusting the timing and duration of sludge discharge according to the actual situation such as the sludge concentration in the reactor and the quality of the treated water.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A backflush and backwashing system, characterized in that, This includes the water inlet system, the backflush system, and the backwash system; The water inlet system includes an inlet pipe (3), a water distribution trough (7), and a water distribution pipe (8) connected sequentially along the water inlet direction. An inlet pump (4) and an inlet valve (6) are sequentially installed on the inlet pipe (3), and a water distribution valve (10) is installed on the water distribution pipe (8). The backflush system includes an air inlet pipe (13), an air distribution groove (17), and an air distribution pipe (18) connected sequentially along the gas flow direction. A blower (14) and a backflush valve (16) are sequentially installed on the air inlet pipe (13), and an air distribution valve (20) is installed on the air distribution pipe (18). The backwashing system includes a backwashing pipe (21), a water distribution tank (25), and a water distribution pipe (26) connected sequentially along the direction of flushing water flow. A backwashing water pump (22) and a backwashing valve (24) are sequentially installed on the backwashing pipe (21), and a water distribution valve (28) is installed on the water distribution pipe (26). The connection area between the water distribution pipe (26) and the water distribution pipe (8) is located downstream of the connection area between the gas distribution pipe (18) and the water distribution pipe (8).

2. The backflush and backwash system as described in claim 1, characterized in that, The water inlet pipe (3) is located above the water distribution trough (7), and a water inlet flow meter (5) is also provided on the water inlet pipe (3). The water inlet flow meter (5) is located between the water inlet pump (4) and the water inlet valve (6). The water distribution pipe (8) is located below the water distribution trough (7), and a water distribution flow meter (9) is also provided on the water distribution pipe (8). The water distribution flow meter (9) is located upstream of the water distribution valve (10).

3. The backflush and backwash system as described in claim 1, characterized in that, The air inlet pipe (13) is located above the air distribution groove (17), and an air inlet flow meter (15) is also provided on the air inlet pipe (13). The air inlet flow meter (15) is located between the blower (14) and the backflush valve (16). The gas distribution pipe (18) is located below the gas distribution trough (17), and a gas distribution flow meter (19) is also provided on the gas distribution pipe (18). The gas distribution flow meter (19) is located upstream of the gas distribution valve (20).

4. The backflush and backwash system as described in claim 1, characterized in that, The backwash pipe (21) is located above the water distribution tank (25), and a backwash flow meter (23) is also provided on the backwash pipe (21). The backwash flow meter (23) is located between the backwash water pump (22) and the backwash valve (24). The water distribution pipe (26) is located below the water distribution tank (25), and a water distribution flow meter (27) is installed on the water distribution pipe (26). The water distribution flow meter (27) is located upstream of the water distribution valve (28).

5. The backflush and backwash system as described in claim 1, characterized in that, The water distribution trough (7), the air distribution trough (17), and the water distribution trough (25) are connected horizontally in sequence but are not interconnected.

6. The backflush and backwash system as described in claim 1, characterized in that, The number of water distribution pipes (8), air distribution pipes (18) and water distribution pipes (26) are all multiple and connected in a one-to-one correspondence.

7. The backflush and backwash system as described in claim 1, characterized in that, The lower end of the water distribution pipe (8) is provided with a horizontal bend section (11), and a number of water distributors (12) with downward openings are provided at intervals on the horizontal bend section (11).

8. A hydrolysis acidification reactor, characterized in that, The backflushing and backwashing system as described in any one of claims 1-7 includes a packing unit (2) provided in the middle of the inner cavity of the hydrolysis acidification reactor, and the water distribution pipe (8) runs longitudinally through the packing unit (2) from top to bottom.

9. A hydrolysis acidification reactor as described in claim 8, characterized in that, It also includes a sludge removal system; The sludge discharge system includes a sludge discharge pipe (29), a sludge pump (30), and a sludge suction pipe (31). The sludge pump (30) is located outside the hydrolysis acidification reactor. The sludge discharge pipe (29) is connected to the discharge end of the sludge pump (30). A sludge discharge flow meter (34) is installed on the sludge discharge pipe (29). The sludge suction pipe (31) is connected to the suction end of the sludge pump (30). The sludge suction pipe (31) extends laterally into the hydrolysis acidification reactor and is located in the lower space of the packing unit (2).

10. A hydrolysis acidification reactor as described in claim 9, characterized in that, The sludge suction pipe (31) is provided with a sludge suction port (32) and a sludge suction electric valve (33). The sludge suction port (32) is located at the end of the sludge suction pipe (31) away from the sludge pump (30), and the sludge suction electric valve (33) is located outside the hydrolysis acidification reactor.

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