A dual-mode agricultural waste integrated treatment device
By designing a dual-mode integrated agricultural pollution treatment device, the AO and OA process mode switching is achieved using aeration volume control, which solves the problems of large fluctuations in rural sewage water quality and imbalance in carbon-nitrogen ratio, improves treatment efficiency, and reduces energy consumption and drug consumption.
Patent Information
- Application Number
- CN202420607647.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-03-27
AI Technical Summary
The existing agricultural sewage treatment equipment is difficult to effectively treat when the water quality of rural sewage fluctuates greatly, especially when the carbon-nitrogen ratio of the incoming water is unbalanced, the anoxic tank in the front cannot play an effective role, resulting in low treatment efficiency.
A dual-mode agricultural pollution integrated treatment device is designed to switch between AO process method and OA process method mode by controlling the aeration amount. The device includes a first dual-mode pool, a second dual-mode pool, a sloped plate sedimentation pool, an inner return pipe and an outer return pipe. The design of the inner and outer return pipes can realize the return of water flow and sludge and improve the treatment efficiency.
By switching the treatment mode, rural sewage can be effectively treated under different water quality conditions, improve treatment efficiency, reduce energy consumption and drug consumption, avoid external carbon sources, and save drug consumption.
Smart Images
Figure CN222729604U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewage treatment, in particular to a dual-mode agricultural sewage integrated treatment device. Background Art
[0002] Rural domestic sewage mainly includes sewage generated by rural residents in their daily lives, such as sewage generated by kitchen, laundry, bathing and other activities. Rural domestic sewage has the characteristics of large water volume, large fluctuations in water volume and quality, and scattered sewage sources. For the treatment of rural sewage, integrated rural domestic sewage treatment reactors are mostly used. The most commonly used treatment process is the AO process, which is also called the anaerobic aerobic process. A (Anaerobic) is the anaerobic section, which is used for nitrogen and phosphorus removal; O (Oxic) is the aerobic section, which is used to remove organic matter in water. Its advantage is that in addition to degrading organic pollutants, it also has certain nitrogen and phosphorus removal functions.
[0003] The agricultural sewage and domestic sewage treatment equipment using the AO process adds an anoxic tank at the front end of the ordinary activated sludge aeration tank (aerobic tank). On the one hand, the denitrification process can directly utilize the organic carbon source in the influent and save the external carbon source; on the other hand, the nitrate nitrogen in it is removed in the anoxic tank through the reflux of the mixed liquid in the aerobic tank. However, when the C / N (carbon-nitrogen ratio) of the agricultural sewage and domestic sewage influent water quality is seriously unbalanced, the influent cannot provide enough carbon source, and the front section (i.e., the anoxic tank) in the treatment equipment cannot play an effective role. Therefore, due to the large fluctuations in the water quality of rural sewage, it is difficult to meet the treatment of different water quality conditions using a single fixed process treatment reactor. In order to meet the treatment standards of rural sewage under different water quality conditions, a new type of agricultural sewage treatment equipment is urgently needed. Utility Model Content
[0004] The purpose of the utility model is to provide a dual-mode integrated agricultural sewage treatment device, which realizes the switching between the AO process mode and the OA process mode by controlling the aeration volume, thereby avoiding the low efficiency operation caused by insufficient carbon source when the traditional front section is an anoxic tank, and the back section is treated in the anoxic tank and then refluxed into the front section aerobic tank, thereby improving the treatment efficiency and reducing energy consumption and drug consumption.
[0005] According to the purpose of the utility model, the utility model provides a dual-mode integrated agricultural sewage treatment device, including a first dual-mode pool, a second dual-mode pool, an inclined plate sedimentation tank, an inner return pipe and an outer return pipe, the two ends of the inner return pipe are respectively located in the first dual-mode pool and the second dual-mode pool, and the two ends of the outer return pipe are respectively located in the inclined plate sedimentation tank and the first dual-mode pool.
[0006] Furthermore, the first dual-mode tank is provided with a water inlet, and the inclined plate sedimentation tank is provided with a water outlet.
[0007] Furthermore, the inner return pipe has a first inner return port and a second inner return port at both ends, the first inner return port is located in the first dual-mode pool, the second inner return port is located in the second dual-mode pool, and the inner return pipe returns part of the water flow in the second dual-mode pool to the first dual-mode pool.
[0008] Furthermore, the two ends of the external return pipe are respectively provided with an external return inlet and an external return outlet, the external return inlet is located in the inclined plate sedimentation tank, and the external return outlet is located in the first dual-mode tank.
[0009] Furthermore, the external return pipe returns part of the water flow and sludge of the inclined plate sedimentation tank to the first dual-mode tank.
[0010] Furthermore, the first dual-mode pool and the second dual-mode pool are filled with suspended fillers, and the filling rate of the suspended fillers is 30%.
[0011] Furthermore, aeration pipes are provided in the first dual-mode tank, the second dual-mode tank and the inclined plate sedimentation tank.
[0012] Furthermore, perforated tube aeration and flushing pipelines are provided at the bottoms of the first dual-mode tank, the second dual-mode tank and the inclined plate sedimentation tank.
[0013] Furthermore, an inclined plate filler is provided inside the inclined plate sedimentation tank, and the inclined direction of the inclined plate filler is opposite to the water flow direction.
[0014] Furthermore, a plurality of through holes are provided on the perforated tube aeration and flushing pipeline, each of which has a diameter of 3 mm and is cross-arranged downward at 45 degrees.
[0015] The utility model adopts the AO process mode when the C / N (carbon-nitrogen ratio) of the agricultural and domestic sewage inlet water quality is normal, and adopts the OA process mode when the C / N (carbon-nitrogen ratio) of the agricultural and domestic sewage inlet water quality is unbalanced and the carbon source in the incoming water is insufficient. The aerobic pool in the front section can directly remove COD, TN, etc. in the water, avoiding the low efficiency operation caused by insufficient carbon source when the traditional front section is an anoxic pool, and the back section is treated in the anoxic pool and then refluxed into the aerobic pool in the front section, thereby improving the treatment efficiency.
[0016] Reduce energy consumption, avoid adding external carbon sources, and save medicine consumption. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 It is a schematic diagram of the top view of the structure of an embodiment of the utility model;
[0019] Figure 2 This is a schematic diagram of the cross-sectional structure in an embodiment of the utility model;
[0020] In the figure: 1. first dual-mode pool, 2. second dual-mode pool, 3. inclined plate sedimentation tank, 4. internal return pipe, 5. external return pipe, 6. water inlet, 7. water outlet, 8. suspended filler, 9. perforated tube aeration flushing pipeline, 10. inclined plate filler, 11. aeration pipe. DETAILED DESCRIPTION
[0021] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0024] Example 1
[0025] like Figure 1-Figure 2 As shown,
[0026] A dual-mode agricultural sewage integrated treatment device comprises a first dual-mode pool 1, a second dual-mode pool 2, an inclined plate sedimentation pool 3, an inner return pipe 4 and an outer return pipe 5. The first dual-mode pool 1 is provided with a water inlet 6, and the inclined plate sedimentation pool 3 is provided with a water outlet 7. The water inlet 6 is an inlet for rural domestic sewage to flow into the first dual-mode pool 1, and the water outlet 7 is an outlet for rural domestic sewage to flow out of the inclined plate sedimentation pool 3.
[0027] The two ends of the internal reflux pipe 4 are respectively located in the first dual-mode pool 1 and the second dual-mode pool 2. Specifically, the two ends of the internal reflux pipe 4 have a first internal reflux port and a second internal reflux port, the first internal reflux port is located in the first dual-mode pool 1, and the second internal reflux port is located in the second dual-mode pool 2.
[0028] The internal reflow pipe 4 is a channel for the water flow of the aerobic pool (O pool, the second dual-mode pool 2) to partially flow back to the anoxic pool (A pool, the first dual-mode pool 1). It is mainly used for the nitrification liquid of the aerobic pool (O pool) to flow back to the anoxic pool (A pool) to provide a nitric nitrogen source for the anoxic pool to assist the denitrification of the anoxic pool.
[0029] The two ends of the external return pipe 5 are respectively located in the inclined plate sedimentation tank 3 and the first dual-mode tank 1. Specifically, the two ends of the external return pipe 5 have an external return port inlet 6 and an external return port outlet 7. The external return port inlet 6 is located in the inclined plate sedimentation tank 3, and the external return port outlet 7 is located in the first dual-mode tank 1.
[0030] The external return pipe 5 is a channel for the water flow and sludge part of the inclined plate sedimentation tank 3 to return to the first dual-mode tank 1, mainly for the return of external sludge, which returns from the inclined plate sedimentation tank 3 to the first dual-mode tank 1 (anaerobic tank) to replenish the sludge of the entire system.
[0031] The first dual-mode pool 1 and the second dual-mode pool 2 are filled with suspended fillers 8, with a filling rate of 30%.
[0032] A perforated tube aeration and flushing pipeline 9 is provided at the bottom of the first dual-mode pool 1 and the second dual-mode pool 2. The perforated tube aeration and flushing pipeline 9 is provided with a plurality of through holes, each of which has a diameter of 3 mm and is cross-arranged at 45 degrees downward.
[0033] An inclined plate filler 10 is arranged inside the inclined plate sedimentation tank 3. The inclined direction of the inclined plate filler 10 is opposite to the water flow direction. A perforated tube aeration and flushing pipeline 9 is also arranged below the inclined plate filler 10. The perforated tube aeration and flushing pipeline 9 is provided with a plurality of through holes. The aperture of the through holes is 3 mm and the through holes are cross-arranged at 45° downward.
[0034] The first dual-mode pool 1, the second dual-mode pool 2 and the inclined plate sedimentation pool 3 are all provided with an aeration pipe 11. The utility model realizes the transition between the aerobic and anoxic modes by controlling the aeration amount of the first dual-mode pool 1 and the second dual-mode pool 2, and can realize the switching between the AO mode and the OA mode to adapt to different water quality conditions. That is, increasing the aeration amount of the first dual-mode pool 1 and reducing the aeration amount of the second dual-mode pool 2 is the OA mode; reducing the aeration amount of the first dual-mode pool 1 and increasing the aeration amount of the second dual-mode pool 2 is the AO mode.
[0035] The utility model can be divided into two water treatment modes: AO process and OA process. When the C / N (carbon-nitrogen ratio) of the agricultural and domestic sewage inlet water quality is normal, the AO traditional mode is adopted. The aeration volume of the first dual-mode pool 1 is small to meet the needs of the anoxic pool (A pool), and the aeration volume of the second dual-mode pool 2 is large to meet the needs of the aerobic pool (O pool). The internal reflux direction is water inlet from the second internal reflux port and water outlet from the first internal reflux port.
[0036] When the C / N (carbon-nitrogen ratio) of the influent water quality of agricultural and domestic sewage is unbalanced and the carbon source of the incoming water is insufficient, the traditional OA mode is adopted. The aeration volume of the first dual-mode pool 1 is large to meet the needs of the anoxic pool (O pool), and the aeration volume of the second dual-mode pool 2 is small to meet the needs of the aerobic pool (A pool). The internal reflow direction is water inlet from the first internal reflow port and water outlet from the second internal reflow port. The aerobic pool in the front section can directly remove COD, TN, etc. in the water, avoiding the inefficient operation caused by insufficient carbon source when the traditional front section is an anoxic pool, and the back section is treated in the anoxic pool and then reflowed into the front section aerobic pool to improve the treatment efficiency.
[0037] In this embodiment, the AO process is also called the anaerobic-aerobic process. A (Anaerobic) is the anaerobic section, which is used for nitrogen and phosphorus removal; O (Oxic) is the aerobic section, which is used to remove organic matter in water. Its advantage is that in addition to degrading organic pollutants, it also has certain nitrogen and phosphorus removal functions.
[0038] The OA process is a wastewater treatment technology that combines anaerobic and aerobic treatment units. In this process, "A" stands for the anaerobic section, which is responsible for removing nitrogen and phosphorus contained in the wastewater; while "O" stands for the aerobic section, which mainly degrades organic matter in the wastewater. The advantage of the OA process is that it has a simple process and does not require additional carbon sources and additional post-aeration tanks, which reduces the cost of construction and operation.
[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A dual-mode agricultural waste integrated treatment device, characterized in that: It includes a first dual-mode pool, a second dual-mode pool, an inclined plate sedimentation pool, an inner return pipe and an outer return pipe, wherein the two ends of the inner return pipe are respectively located in the first dual-mode pool and the second dual-mode pool, and the two ends of the outer return pipe are respectively located in the inclined plate sedimentation pool and the first dual-mode pool.
2. The dual-mode agricultural waste integrated treatment device according to claim 1 is characterized in that: The first dual-mode tank is provided with a water inlet, and the inclined plate sedimentation tank is provided with a water outlet.
3. The dual-mode agricultural waste integrated treatment device according to claim 1, characterized in that: The inner return pipe has a first inner return port and a second inner return port at both ends, the first inner return port is located in the first dual-mode pool, the second inner return port is located in the second dual-mode pool, and the inner return pipe returns part of the water flow in the second dual-mode pool to the first dual-mode pool.
4. The dual-mode agricultural waste integrated treatment device according to claim 1, characterized in that: The two ends of the external return pipe are respectively provided with an external return inlet and an external return outlet. The external return inlet is located in the inclined plate sedimentation tank, and the external return outlet is located in the first dual-mode tank.
5. The dual-mode agricultural waste integrated treatment device according to claim 1, characterized in that: The external return pipe returns part of the water flow and sludge of the inclined plate sedimentation tank to the first dual-mode tank.
6. The dual-mode agricultural waste integrated treatment device according to claim 1, characterized in that: The first dual-mode pool and the second dual-mode pool are filled with suspended fillers, and the filling rate of the suspended fillers is 30%.
7. The dual-mode agricultural waste integrated treatment device according to claim 1, characterized in that: Aeration pipes are provided in the first dual-mode tank, the second dual-mode tank and the inclined plate sedimentation tank.
8. The dual-mode agricultural waste integrated treatment device according to claim 1, characterized in that: Perforated tube aeration and flushing pipelines are provided at the bottoms of the first dual-mode tank, the second dual-mode tank and the inclined plate sedimentation tank.
9. The dual-mode agricultural waste integrated treatment device according to claim 1, characterized in that: The inclined plate sedimentation tank is provided with inclined plate fillers inside, and the inclined direction of the inclined plate fillers is opposite to the water flow direction.
10. The dual-mode agricultural waste integrated treatment device according to claim 8, characterized in that: A plurality of through holes are provided on the perforated tube aeration and flushing pipeline, each of which has a diameter of 3 mm and is cross-arranged downward at 45 degrees.