An integrated agricultural sewage treatment device with variable tank capacity
By designing an integrated agricultural waste treatment device with variable pool capacity, the return pipe and aeration pipe are used to achieve dynamic adjustment of the treatment process and pool capacity, the problems of large fluctuations in rural sewage water quality and unstable water volume are solved, and effective treatment of various incoming water conditions and compliance with standards are achieved.
Patent Information
- Application Number
- CN202420612343.2
- 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 water quality of rural sewage fluctuates greatly and the water volume is unstable. It is difficult for existing equipment to meet various incoming water quality and water quality conditions, resulting in unsatisfactory treatment results.
An integrated agricultural waste treatment device with variable pool capacity is designed, including a first variable pool, a second variable pool, an aerobic pool and a sloped plate sedimentation pool. Through the arrangement of internal and external return pipes and aeration pipes, the switching of different processing flows and the adjustment of the pool capacity is realized.
The device can expand or reduce the pool capacity under different incoming water quality, meet a variety of water quality conditions, and achieve effective treatment and compliance with the discharge of rural sewage.
Smart Images
Figure CN222729588U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewage treatment, in particular to an integrated agricultural sewage treatment device with a variable tank capacity. Background Art
[0002] The sources of rural sewage are widely distributed, and its discharge volume fluctuates in time distribution. The discharge volume throughout the year shows seasonal characteristics. The season with the most water use in rural areas is summer, so summer is also the season with the most rural sewage discharge.
[0003] The indicators that rural sewage focuses on are generally COD and TN. Based on this, most of the equipment currently used for rural sewage treatment adopts the A / O process. The A / O process is also called the anoxic-aerobic process, which is a process composed of an anoxic reaction unit and an aerobic reaction unit in series. In the anoxic tank, microorganisms use organic matter as a carbon source to denitrify the nitrified liquid that returns, and while initially degrading organic matter, they convert nitrogen into nitrogen gas for removal. In the aerobic tank, organic matter is further degraded and ammonia nitrogen is removed by nitrification.
[0004] However, rural sewage water is not always in a balanced state. When extreme conditions occur: COD is close to the design upper limit and TN is close to zero, or when TN is close to the design upper limit and COD is close to zero, it can be considered that the incoming water is completely of two different water qualities. Therefore, due to the large fluctuations in water quality and unstable water volume of rural sewage, in order to achieve standard treatment of rural sewage, an agricultural sewage treatment equipment that can adapt to a wider range of water quality and water volume is urgently needed. Utility Model Content
[0005] The purpose of the utility model is to provide an integrated agricultural sewage treatment device with a variable tank capacity, aiming at the characteristics of large fluctuations in water quality and unstable water volume of rural sewage, to realize the integrated treatment equipment to meet more water quality and water volume conditions, to achieve effective treatment of rural sewage and meet discharge standards.
[0006] According to the purpose of the utility model, the utility model provides an integrated agricultural sewage treatment device with variable tank capacity, including a first variable tank, a second variable tank, an aerobic tank and an inclined plate sedimentation tank, an internal return pipe is provided between the aerobic tank and the first variable tank, and an external return pipe is provided between the inclined plate sedimentation tank and the first variable tank.
[0007] Furthermore, the first variable tank is provided with a water inlet, and the inclined plate sedimentation tank is provided with a water outlet.
[0008] Furthermore, the two ends of the internal reflux pipe are respectively provided with an internal reflux inlet and an internal reflux outlet, the internal reflux inlet is located in the aerobic tank, and the internal reflux outlet is located in the first variable tank.
[0009] 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 variable tank.
[0010] Furthermore, the first variable pool, the second variable pool and the aerobic pool are filled with suspended fillers, and the filling rates of the suspended fillers in the first variable pool, the second variable pool and the aerobic pool are 30%, 40% and 50% respectively.
[0011] Furthermore, aeration pipes are provided in the first variable pool, the second variable pool and the aerobic pool, and perforated pipe aeration and flushing pipelines are provided at the bottom of the first variable pool, the second variable pool and the aerobic pool.
[0012] Furthermore, a plurality of openings 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.
[0013] Furthermore, an inclined plate is provided in the inclined plate sedimentation tank, and the inclination direction of the inclined plate should be opposite to the direction of water flow.
[0014] Furthermore, a water distribution weir is provided in the inclined plate sedimentation tank, and the water distribution weir is arranged at the water level line of the inclined plate sedimentation tank.
[0015] Furthermore, inspection openings are provided on the tops of the first variable tank, the second variable tank, the aerobic tank and the inclined plate sedimentation tank.
[0016] The technical solution of the utility model realizes the switching of different treatment processes by controlling the aeration amount of the first variable tank, the second variable tank and the aerobic tank. Under different influent water quality conditions, the pool capacity of the aerobic tank or the anoxic tank is expanded to meet the treatment of different influent water quality conditions. In view of the characteristics of large fluctuations in water quality and unstable water volume of rural sewage, the integrated treatment equipment can meet more influent water quality and water volume conditions, thereby realizing effective treatment of rural sewage. 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 2This is a schematic diagram of the cross-sectional structure in an embodiment of the utility model;
[0020] Figure 3 This is a schematic diagram of the structure of the water distribution weir in the embodiment of the utility model;
[0021] Figure 4 This is a schematic diagram of the structure of the inclined plate in the embodiment of the utility model;
[0022] In the figure: 1. first variable tank, 2. second variable tank, 3. aerobic tank; 4. inclined plate sedimentation tank, 5. water inlet, 6. water outlet, 7. internal return pipe, 8. external return pipe, 9. suspended filler, 10. perforated tube aeration flushing pipeline, 11. water distribution weir, 12. inclined plate, 13. inspection port. DETAILED DESCRIPTION
[0023] 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.
[0024] 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.
[0025] 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.
[0026] Example 1
[0027] like Figure 1-Figure 4 As shown, an integrated agricultural sewage treatment device with a variable tank capacity includes a first variable tank 1, a second variable tank 2, an aerobic tank 3 and an inclined plate sedimentation tank 4. The first variable tank 1 is provided with a water inlet 5, which is the entrance for rural domestic sewage to flow into the device. The inclined plate sedimentation tank 4 is provided with a water outlet 6, which is the outlet for rural domestic sewage to flow out of the device.
[0028] An internal reflux pipe 7 is provided between the aerobic pool 3 and the first variable pool 1. The two ends of the internal reflux pipe 7 are provided with an internal reflux inlet and an internal reflux outlet, respectively. The internal reflux inlet is located in the aerobic pool 3, and the internal reflux outlet is located in the first variable pool 1. The internal reflux pipe 7 is a channel for the water flow of the aerobic pool 3 (O pool) to partially flow back to the front end of the first variable pool 1 (A pool), mainly for the nitrification liquid of the aerobic pool 3 (O pool) to flow back to the anoxic pool (A pool) of the first variable pool 1 to provide a nitrate nitrogen source for the anoxic pool to facilitate the denitrification of the anoxic pool.
[0029] An external return pipe 8 is provided between the inclined plate sedimentation tank 4 and the first variable tank 1, and the two ends of the external return pipe 8 are provided with an external return port water inlet and an external return port water outlet, respectively. The external return port water inlet 5 is located in the inclined plate sedimentation tank 4, and the external return port water outlet is located in the first variable tank 1. The external return pipe 8 is a channel for the water flow and sludge part of the inclined plate sedimentation tank 4 to return to the first variable tank 1. The external return pipe 8 is mainly for the return of sludge, which is returned from the inclined plate sedimentation tank 4 to the first variable tank 1 to replenish the sludge of the entire system.
[0030] The first variable pool 1, the second variable pool 2 and the aerobic pool are filled with suspended fillers 9, and the filling rates of the suspended fillers 9 are 30%, 40% and 50% respectively.
[0031] Aeration pipes are provided in the first variable pool 1, the second variable pool 2 and the aerobic pool 3. Perforated tube aeration flushing pipelines 10 are provided at the bottom of the first variable pool 1, the second variable pool 2 and the aerobic pool 3. Openings are provided on the perforated tube aeration flushing pipelines 10. The diameter of the openings is 3 mm. The openings are cross-opened at 45° downward on the perforated tube aeration flushing pipelines 10.
[0032] A water distribution weir 11 is provided in the inclined plate sedimentation tank 4. The water distribution weir 11 is located at the water level of the inclined plate sedimentation tank 4 to ensure uniformity of incoming water.
[0033] An inclined plate 12 is provided in the inclined plate sedimentation tank 4. The inclined direction of the inclined plate 12 should be opposite to the direction of water flow. A perforated tube aeration flushing pipeline 10 is also provided below the inclined plate 12. The perforated tube aeration flushing pipeline 10 is also provided with openings. The diameter of the openings is 3 mm, and the openings are cross-opened at 45° downward.
[0034] The tops of the first variable tank 1, the second variable tank 2, the aerobic tank 3, and the inclined plate sedimentation tank 4 are all provided with inspection openings 13, which may be circular or square in shape and are used for daily maintenance and inspection.
[0035] The utility model realizes the switching of different treatment processes by controlling the aeration amount of the first variable pool 1, the second variable pool 2 and the aerobic pool 3, and expands the pool capacity of the aerobic pool or the anoxic pool under different water quality conditions to meet the treatment of different water quality conditions;
[0036] When the amount of incoming water is large, the utility model converts the first variable pool 1 at the front end into a regulating pool mode, thereby increasing the equipment's ability to resist impact loads and adapting to more complex water inflow conditions. By controlling the aeration volume, the function switching of the first variable pool 1 and the second variable pool 2 is achieved. Specifically, it can be divided into three modes of operation: Mode 1: anoxic pool-enlarged aerobic pool-inclined plate sedimentation pool 4; Mode 2: enlarged anoxic pool-aerobic pool-inclined plate sedimentation pool 4; Mode 3: regulating pool-anoxic pool-aerobic pool-inclined plate sedimentation pool 4.
[0037] When the influent water quality and quantity are stable and the pollutant ratio is balanced (i.e. under normal circumstances), since the sludge concentration in the anoxic tank is generally higher than that in the aerobic tank, the second variable tank 2 is used as an aerobic tank in principle to ensure the amount of aerobic sludge. Therefore, the first variable tank 1 is in the anoxic tank mode, and the second variable tank 2 is in the aerobic tank mode;
[0038] When the inflow water volume is large, the first variable pool 1 is in the regulating pool mode, storing a portion of the water volume and regulating the incoming water volume as a buffer, and the second variable pool 2 is in the anoxic pool mode;
[0039] When there is an imbalance in the influent water quality, with a high TN content and a low COD content, the first variable pool 1 and the second variable pool 2 are in anoxic pool mode, so as to achieve the purpose of expanding the capacity of the anoxic pool and better utilize denitrification to remove TN;
[0040] When there is an imbalance in the influent water quality, with a high COD content and a low TN content, the first variable pool 1 is in anoxic pool mode and the second variable pool 2 is in aerobic pool mode. At the same time, the aeration volume of the second variable pool 2 and the aerobic pool is increased to better remove COD through aerobic reactions of organic matter.
[0041] The utility model aims to realize the integrated treatment equipment to meet more water quality and water quantity conditions of rural sewage, aiming at the characteristics of large fluctuations in water quality and unstable water quantity, and to achieve effective treatment of rural sewage and meet discharge standards.
[0042] 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. An integrated agricultural wastewater treatment device with a variable tank capacity, characterized in that: It comprises a first variable pool, a second variable pool, an aerobic pool and an inclined plate sedimentation pool, an inner reflux pipe is arranged between the aerobic pool and the first variable pool, and an outer reflux pipe is arranged between the inclined plate sedimentation pool and the first variable pool.
2. The variable tank capacity agricultural sewage integrated treatment device according to claim 1 is characterized in that: The first variable tank is provided with a water inlet, and the inclined plate sedimentation tank is provided with a water outlet.
3. The variable tank capacity agricultural sewage integrated treatment device according to claim 1 is characterized in that: The two ends of the internal reflux pipe are respectively provided with an internal reflux inlet and an internal reflux outlet, the internal reflux inlet is located in the aerobic tank, and the internal reflux outlet is located in the first variable tank.
4. The variable tank capacity agricultural sewage 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 variable tank.
5. The variable tank capacity agricultural sewage integrated treatment device according to claim 1 is characterized in that: The first variable pool, the second variable pool and the aerobic pool are filled with suspended fillers, and the filling rates of the suspended fillers in the first variable pool, the second variable pool and the aerobic pool are 30%, 40% and 50% respectively.
6. The variable-capacity agricultural wastewater integrated treatment device according to claim 1, characterized in that: Aeration pipes are arranged in the first variable pool, the second variable pool and the aerobic pool, and perforated pipe aeration and flushing pipelines are arranged at the bottom of the first variable pool, the second variable pool and the aerobic pool.
7. The variable-capacity agricultural wastewater integrated treatment device according to claim 6, characterized in that: The perforated tube aeration and flushing pipeline is provided with a plurality of openings, each of which has a diameter of 3 mm and is cross-arranged downward at 45 degrees.
8. The variable-capacity agricultural wastewater integrated treatment device according to claim 1, characterized in that: An inclined plate is provided in the inclined plate sedimentation tank, and the inclination direction of the inclined plate should be opposite to the direction of water flow.
9. The variable-capacity agricultural wastewater integrated treatment device according to claim 1, characterized in that: A water distribution weir is provided in the inclined plate sedimentation tank, and the water distribution weir is arranged at the water level line of the inclined plate sedimentation tank.
10. The variable-capacity agricultural wastewater integrated treatment device according to claim 1, characterized in that: Inspection ports are provided on the tops of the first variable tank, the second variable tank, the aerobic tank and the inclined plate sedimentation tank.