A2o process sewage treatment filler assembly with anti-blocking function

Abstract

The utility model belongs to sewage treatment technical field discloses a kind of A2O process sewage treatment filler assembly with anti-blocking function, the component includes treatment pond, fixed rod, filler, fan, the stirring assembly of providing inert gas, three-way valve and anti-blocking component, the different import of fan and stirring assembly's export respectively connect to three-way valve, the export of three-way valve is communicated with anti-blocking component by pipeline. The utility model is switched three-way valve selection gas source: high-pressure air provided using fan drives spray pipe high-speed rotation, forms strong water flow scouring clean filler, effectively prevents blockage;Inert gas provided using stirring assembly drives spray pipe slowly rotates, realizes mild agitation to anaerobic or anoxic zone sewage under the premise of not introducing oxygen. The component one machine multi-ability, clever structure, solve the technical problem of filler blockage and anaerobic zone oxygen-free stirring, and strong applicability.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, and in particular relates to a wastewater treatment packing assembly for the A2O process. Background Technology

[0002] In the field of wastewater treatment, especially in biological treatment processes, the biofilm method, which uses packing materials to attach microorganisms, is a widely used technology. Due to their large specific surface area, these packing materials can efficiently enrich microorganisms and are extensively used in various reaction zones of mainstream wastewater treatment processes such as A2O (anaerobic-anoxic-aerobic) to improve treatment efficiency.

[0003] However, as operating time increases, suspended solids, detached and aged biofilm, and microbial metabolic products in the wastewater gradually adhere to and accumulate on the surface and in the pores of the packing material, forming caking and blockage. This blockage not only causes short-circuiting of the water flow, significantly reducing the effective contact area of ​​the packing material, but also deteriorates mass transfer conditions, ultimately leading to a significant decrease in treatment efficiency. To solve this problem, existing technologies typically employ periodic backwashing or manual cleaning during shutdown. However, these methods are complex to operate, interrupt the treatment process, and are difficult to thoroughly remove stubborn sludge from dead corners of the tank and inside the packing material.

[0004] Although some technologies have attempted to use airflow generated by aeration devices to flush the packing material in the aerobic zone, oxygen is strictly prohibited in the anaerobic and anoxic zones of the A2O process, rendering such aeration cleaning methods unsuitable. Furthermore, traditional mechanical agitators installed in these areas can only stir the water and lack the effective ability to remove and clean the caked sludge adhering to the packing material. Therefore, current technology lacks a packing material assembly that can comprehensively solve the packing material clogging problem and simultaneously adapt to the different operating conditions of aerobic, anoxic, and anaerobic processes in the A2O process.

[0005] Therefore, this utility model proposes an A2O process wastewater treatment packing assembly with anti-clogging function to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides an A2O process wastewater treatment packing assembly with anti-clogging function, aiming to improve the problems of existing A2O process wastewater treatment packing assemblies with anti-clogging function, which are prone to clogging and difficult to clean, and whose supporting aeration or stirring devices have limited functions and cannot simultaneously adapt to different working conditions such as aerobic, anoxic and anaerobic environments.

[0007] To achieve the above objectives, this utility model provides the following technical solution: including: a treatment tank, a fixing rod, packing material, a blower, an air inlet pipe, a stirring assembly, a three-way valve, a connecting pipe, an upper air inlet pipe and a lower air inlet pipe; and an anti-clogging assembly.

[0008] The anti-clogging component includes a fixed upper aeration pipe and a lower aeration pipe, and a nozzle rotatably connected to the upper aeration pipe and the lower aeration pipe, wherein the nozzle is provided with a nozzle.

[0009] Furthermore, the fixing rod is vertically installed inside the treatment tank, and the packing is fixed to the lower part of the fixing rod; the blower is connected to one inlet of the three-way valve through an air inlet pipe, and the stirring assembly is connected to the other inlet of the three-way valve; the outlet of the three-way valve is connected to the upper air inlet pipe and the lower air inlet pipe through connecting pipes respectively; the upper air inlet pipe is connected to the upper aeration pipe, and the lower air inlet pipe is connected to the lower aeration pipe; the jet direction of the nozzle is configured to allow the nozzle to rotate due to the reaction force generated when jetting.

[0010] Preferably, a bearing for supporting the rotation of the nozzle is provided between the nozzle and the upper and lower aeration pipes.

[0011] Preferably, one side of the bearing is also provided with a magnetohydrodynamic seal ring for isolating debris.

[0012] Preferably, both the upper aeration pipe and the lower aeration pipe are provided with air grooves on their pipe walls, and the air grooves are used to guide gas from the inside of the aeration pipe to the inside of the spray pipe.

[0013] Preferably, the nozzle is provided with an inclined groove that communicates with the nozzle opening. The inclined groove is used to change the airflow direction to generate a reaction force that drives the nozzle to rotate.

[0014] Preferably, the upper aeration pipe and the lower aeration pipe are spaced apart along the axial direction of the fixed rod and are located above and below the packing, respectively.

[0015] Preferably, the stirring assembly includes an inert gas tank, an outlet pipe communicating with the inert gas tank, and an air valve disposed on the outlet pipe.

[0016] Preferably, the A2O process wastewater treatment packing assembly with anti-clogging function further includes a controller, which is electrically connected to the blower and the air valve in the mixing assembly.

[0017] This utility model has the following beneficial effects: 1. In this utility model, by setting up a nozzle that can be driven to rotate at high speed by high-pressure air, the powerful rotating water flow generated by the nozzle impacts the packing material and the treatment tank, which solves the problems in the prior art where the packing material is easily blocked and hardened by sludge, and the corners of the tank are difficult to clean due to dirt accumulation. It achieves the technical effect of all-round, automated flushing and cleaning of the packing material and the tank, effectively preventing blockage and ensuring stable treatment effect.

[0018] 2. In this utility model, by setting a three-way valve to switch the gas source, the inert gas is used to drive the nozzle to rotate slowly to agitate the sewage. This solves the technical problem of the contradiction that A2O and other processes need to both agitate and prevent oxygen from entering during the anaerobic or anoxic stage. It achieves the technical effect of effective agitation without damaging the anoxic environment and can prevent the nozzle from clogging.

[0019] 3. In this utility model, by integrating aeration, cleaning and anaerobic stirring functions into the same set of rotary jet components, and by switching the air source to achieve mode conversion, the problem of complex system structure and high cost caused by the need to set up multiple devices separately in the prior art is solved. This achieves the technical effect of simplifying the system, reducing equipment costs and making it easy to achieve automated integration. Attached Figure Description

[0020] Figure 1 This is a perspective view of the A2O process wastewater treatment packing assembly with anti-clogging function proposed in this utility model; Figure 2 This is a schematic diagram of the aeration component structure of the A2O process wastewater treatment packing assembly with anti-clogging function proposed in this utility model. Figure 3 This is a schematic diagram of the anti-clogging component structure of the A2O process wastewater treatment packing assembly with anti-clogging function proposed in this utility model. Figure 4 This is a schematic diagram of the stirring assembly structure of the A2O process wastewater treatment packing assembly with anti-clogging function proposed in this utility model.

[0021] Legend: 1. Treatment tank; 2. Fixing rod; 3. Packing material; 4. Upper air inlet pipe; 5. Lower air inlet pipe; 6. Anti-clogging component; 61. Upper aeration pipe; 62. Air trough; 63. Magnetohydrodynamic sealing ring; 64. Bearing; 65. Nozzle; 66. Inclined trough; 67. Nozzle; 68. Lower aeration pipe; 7. Connecting pipe; 8. Three-way valve; 9. Air inlet pipe; 10. Blower; 11. Agitator assembly; 111. Inert gas tank; 112. Air outlet pipe; 113. Air valve; 12. Controller. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figure 1 and Figure 2One embodiment of this utility model is an A2O process wastewater treatment packing assembly with anti-clogging function, which aims to solve the problem that existing wastewater treatment packing assemblies are prone to clogging and their supporting devices cannot provide anaerobic stirring under anaerobic or anoxic conditions.

[0024] The A2O process wastewater treatment packing assembly with anti-clogging function includes a treatment tank 1. A fixed rod 2 is vertically installed inside the treatment tank 1, and packing material 3 is fixedly connected to the lower part of the fixed rod 2. The assembly also includes a blower 10 as an air source and an air inlet pipe 9 connected to the outlet end of the blower 10. It also includes a stirring assembly 11 for providing inert gas. The assembly is equipped with a three-way valve 8. The end of the air inlet pipe 9 and the outlet end of the stirring assembly 11 are respectively connected to two different inlets of the three-way valve 8. A connecting pipe is connected to the outlet end of the three-way valve 8. One end of the connecting pipe 7 is connected to the upper air inlet pipe 4 and the lower air inlet pipe 5. The core part of the component is the anti-clogging component 6. The anti-clogging component 6 includes an upper aeration pipe 61 and a lower aeration pipe 68. The upper aeration pipe 61 is supplied with air through the upper air inlet pipe 4, and the lower aeration pipe 68 is supplied with air through the lower air inlet pipe 5. The anti-clogging component 6 also includes a nozzle 65 that is rotatably connected to the upper aeration pipe 61 and the lower aeration pipe 68. The nozzle 65 is provided with a nozzle 67, and the jet direction of the nozzle 67 is configured to enable the nozzle 65 to rotate due to the jet reaction force.

[0025] The upper aeration pipe 61 and lower aeration pipe 68 of the anti-clogging component 6 are spaced apart along the axial direction of the fixed rod 2, and are located above and below the packing 3, respectively. This layout ensures complete coverage of the packing 3. Air grooves 62 are provided on the walls of both the upper aeration pipe 61 and the lower aeration pipe 68. The nozzle 65 is rotatably connected to the outside of the upper aeration pipe 61 and the lower aeration pipe 68. The position of the air grooves 62 corresponds to the internal space of the nozzle 65, and is used to guide gas from the inside of the upper aeration pipe 61 and the lower aeration pipe 68 to the inside of the nozzle 65. To achieve smooth and stable rotation, the nozzle 65 is connected to the upper aeration pipe 61 and the lower aeration pipe 68. A bearing 64 is also provided between the aeration pipes 68 to support the rotation of the nozzle 65. To prevent impurities in the sewage from entering the rotating structure and causing wear or jamming, a magnetic fluid sealing ring 63 for isolating impurities is also provided on one side of the bearing 64. The nozzle 65 is provided with an inclined groove 66 that communicates with the nozzle 67. The inclined groove 66 is used to change and guide the airflow direction entering the nozzle 65 from the air groove 62, so that it generates a tangential force when it is ejected from the nozzle 67. The reaction torque formed by this component force drives the nozzle 65 to rotate around the axis of the upper aeration pipe 61 or the lower aeration pipe 68, thereby forming a rotating jet of airflow or water.

[0026] As a preferred layout, the upper aeration pipe 61 and the lower aeration pipe 68 are spaced apart along the axial direction of the fixed rod 2 and are respectively positioned above and below the packing 3. This arrangement allows the anti-clogging component 6 to effectively cover both the upper and lower areas of the packing 3 during operation.

[0027] In a preferred embodiment, in order to achieve the stirring function in an oxygen-free environment, the stirring assembly 11 specifically includes an inert gas tank 111, an outlet pipe 112, and a valve 113. The inert gas tank 111 is used to store inert gas. One end of the outlet pipe 112 is connected to the inert gas tank 111, and the other end is connected to an inlet of a three-way valve 8. The valve 113 is installed on the outlet pipe 112 and is used to control the flow of inert gas.

[0028] As another preferred embodiment, in order to achieve automated control of different working modes, the component also includes a controller 12. The controller 12 is electrically connected to the air valve 113 in the fan 10 and the stirring assembly 11 respectively. The controller 12 can start or stop the fan 10 and open or close the air valve 113, thereby selectively supplying air or inert gas to the anti-clogging assembly 6.

[0029] Working principle: When the packing 3 needs to be cleaned and aerated, the controller 12 starts the blower 10 and adjusts the three-way valve 8 to connect the air inlet pipe 9 and the connecting pipe 7. The air is drawn in and pressurized by the blower 10, and then passes through the air inlet pipe 9, the three-way valve 8, and the connecting pipe 7 in sequence, and enters the upper air inlet pipe 4 and the lower air inlet pipe 5 respectively. Then the high-pressure air enters the upper aeration pipe 61 and the lower aeration pipe 68, and passes through the air groove 62 into the nozzle 65. The gas flows through the inclined groove 66 in the nozzle 65 and is ejected at high speed from the nozzle 67. The reaction torque generated when it is ejected pushes the nozzle 65 to rotate at high speed around its axis. The high-speed airflow ejected forms a strong rotating water flow in the water, which impacts and washes the corners of the packing 3 and the treatment tank 1 in all directions, and removes the attached sludge and impurities, thereby achieving the functions of anti-clogging and cleaning.

[0030] When the treatment process is in the anaerobic or anoxic stage and anaerobic stirring is required, the controller 12 shuts off the blower 10 and opens the air valve 113. At the same time, the three-way valve 8 is adjusted to connect the stirring assembly 11 and the connecting pipe 7. The inert gas in the inert gas tank 111 enters the anti-clogging assembly 6 through the air outlet pipe 112, air valve 113, three-way valve 8, connecting pipe 7, upper air inlet pipe 4 and lower air inlet pipe 5. The inert gas is ejected from the nozzle 67 at a low pressure, which also drives the nozzle 65 to rotate slowly. The ejected inert gas flow forms a gentle vortex in the treatment tank 1, stirring the sewage and sludge, which plays a stirring role. At the same time, it avoids the introduction of oxygen into the water, and the continuous air flow can also prevent the nozzle 67 from being blocked by impurities.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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. An A2O process wastewater treatment packing assembly with anti-clogging function, comprising a treatment tank (1), characterized in that, Also includes: A fixing rod (2) is vertically installed inside the treatment pool (1); The filler (3) is fixed to the lower part of the fixing rod (2); Fan (10) and air inlet pipe (9) connected to the outlet end of the fan (10); A stirring assembly (11) is used to provide inert gas; Three-way valve (8); A connecting pipe (7) is connected at one end to the outlet end of the three-way valve (8); The upper air intake pipe (4) and the lower air intake pipe (5) are both connected to the other end of the connecting pipe (7); The anti-clogging component (6) includes an upper aeration pipe (61) supplied with air through the upper air inlet pipe (4) and a lower aeration pipe (68) supplied with air through the lower air inlet pipe (5). The end of the air inlet pipe (9) and the outlet end of the stirring assembly (11) are respectively connected to two different inlets of the three-way valve (8); The anti-clogging component (6) also includes a nozzle (65) rotatably connected to the upper aeration pipe (61) and the lower aeration pipe (68). The nozzle (65) is provided with a nozzle (67), and the jet direction of the nozzle (67) can cause the nozzle (65) to rotate due to the jet reaction force.

2. The A2O process wastewater treatment packing assembly with anti-clogging function according to claim 1, characterized in that: A bearing (64) for supporting the rotation of the nozzle (65) is provided between the nozzle (65) and the upper aeration pipe (61) and the lower aeration pipe (68).

3. The A2O process wastewater treatment packing assembly with anti-clogging function according to claim 2, characterized in that: On one side of the bearing (64), a magnetohydrodynamic seal ring (63) for isolating debris is also provided.

4. The A2O process wastewater treatment packing assembly with anti-clogging function according to claim 2, characterized in that: Both the upper aeration pipe (61) and the lower aeration pipe (68) are provided with air grooves (62) on their pipe walls. The air grooves (62) are used to guide gas from the inside of the aeration pipe to the inside of the nozzle (65).

5. The A2O process wastewater treatment packing assembly with anti-clogging function according to claim 1, characterized in that: The nozzle (65) is provided with a sloping groove (66) that communicates with the nozzle (67). The sloping groove (66) is used to change the airflow direction to generate a reaction force that drives the nozzle (65) to rotate.

6. The A2O process wastewater treatment packing assembly with anti-clogging function according to claim 1, characterized in that: The upper aeration pipe (61) and the lower aeration pipe (68) are spaced apart along the axial direction of the fixed rod (2) and are located above and below the packing (3), respectively.

7. The A2O process wastewater treatment packing assembly with anti-clogging function according to claim 1, characterized in that: The stirring assembly (11) includes an inert gas tank (111), an outlet pipe (112) connected to the inert gas tank (111), and an air valve (113) provided on the outlet pipe (112).

8. The A2O process wastewater treatment packing assembly with anti-clogging function according to claim 1, characterized in that: It also includes a controller (12), which is electrically connected to the air valve (113) in the blower (10) and the stirring assembly (11), respectively.

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