Rural sewage aeration treatment device

Abstract

The invention discloses a rural sewage aeration treatment device which comprises a treatment pond, a plurality of supporting legs are fixedly connected to the bottom side wall of the treatment pond, a mounting box is fixedly connected to the bottom side wall of the treatment pond, a motor is fixedly connected to the interior of the mounting box, a rotating rod is fixedly connected to an output shaft of the motor, and the rotating rod is fixedly connected to the bottom side wall of the treatment pond. The rotating rod penetrates and extends into the treatment tank, the rotating rod is rotationally connected to the bottom side wall of the treatment tank through a sealing bearing, a laser rotating speed sensor is mounted on the inner side wall of the mounting box, and the laser rotating speed sensor faces the bottom of the rotating rod and is used for detecting the rotating speed of the rotating rod; the interior of the rotating rod is hollow, and a plurality of hollow air guide pipes are fixedly connected to the side wall of the rotating rod. The sewage stirring speed and the aeration rate are dynamically adjusted according to the turbidity, the pH, the dissolved oxygen concentration and the chemical oxygen demand value of sewage, so that the high efficiency of sewage treatment is ensured, and the practicability is high.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a rural sewage aeration treatment device. Background Art

[0002] Aeration treatment of rural sewage is an important technology in the rural sewage treatment process. It mainly introduces air into sewage to increase the dissolved oxygen content in the water, thereby promoting the metabolism of microorganisms and the degradation of organic matter. Organic pollutants in sewage are mainly degraded by aerobic microorganisms. Aeration introduces air into sewage by mechanical or natural means to increase the oxygen content in the water. In water, the solubility of oxygen changes with factors such as temperature, pressure and gas contact area. Therefore, through the formation of small bubbles, the dissolution efficiency of oxygen can be greatly improved, ensuring the healthy reproduction of microorganisms in an aerobic environment.

[0003] Aeration treatment of rural sewage is aimed at sewage containing organic matter, which accelerates the decomposition of organic matter in sewage and improves water quality. Sewage treated with aeration can be used for farmland irrigation. In rural sewage treatment, aeration treatment technology has been widely used. For example, the rural domestic sewage treatment system using micro-power aeration uses solar photovoltaic power to provide micro-power aeration, and the contact aerobic pool implements intermittent aeration. Its average removal rates of COD (chemical oxygen demand) and ammonia nitrogen are 79.65% and 94.47% respectively, and the effluent meets the GB 18918-2002 Class A emission standard.

[0004] The commonly used treatment methods for sewage treatment are stirring and aeration. Sewage stirring and aeration are often used simultaneously in the sewage treatment process. They promote each other and jointly improve the efficiency and quality of sewage treatment. Stirring makes it easier for organic matter in sewage to contact oxygen, while aeration provides sufficient oxygen and promotes the mixing and circulation of sewage. This synergistic effect helps to accelerate biodegradation reactions and remove organic matter, suspended matter and other pollutants in sewage, thereby achieving the goals of water resource reuse and environmental protection.

[0005] However, in the prior art, the sewage treatment device cannot adjust the sewage stirring speed and aeration volume according to the corresponding water quality parameters. This is because the suspended solids (SS), chemical oxygen demand (COD), biological oxygen demand (BOD) and other indicators in the sewage treated each time are different. If a fixed sewage stirring speed and aeration volume are used, they cannot be adjusted according to the corresponding indicators, which can easily lead to slow sewage treatment efficiency. Summary of the invention

[0006] The present invention provides a rural sewage aeration treatment device to solve the problems raised in the above background technology.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A rural sewage aeration treatment device comprises a treatment pool, a plurality of legs are fixedly connected to the bottom side wall of the treatment pool, a mounting box is fixedly connected to the bottom side wall of the treatment pool, a motor is fixedly connected to the inside of the mounting box, a rotating rod is fixedly connected to the output shaft of the motor, the rotating rod extends through and into the treatment pool, the rotating rod is rotatably connected to the bottom side wall of the treatment pool through a sealed bearing, a laser speed sensor is installed on the inner side wall of the mounting box, the laser speed sensor faces the bottom of the rotating rod and is used to detect the speed of the rotating rod, and the inner side wall of the rotating rod The rotating rod is hollow in structure, and two hollow air pipes are fixedly connected to the side wall of the rotating rod, each of the air pipes is communicated with the inside of the rotating rod, and the two air pipes are close to the bottom of the treatment tank. A plurality of air jet holes are opened on the side walls of the two air pipes, and each of the air jet holes is inclined upward at 45 degrees. An air supply device is provided on the top of the rotating rod, a turbidity sensor, a pH sensor, a dissolved oxygen sensor, and a COD sensor are provided on the inner side wall of the treatment tank, and a discharge pipe is fixedly connected to the side wall of the treatment tank, and a valve is provided on the discharge pipe.

[0008] Preferably, a first gear is fixedly connected to the side wall of the rotating rod, four second gears are meshingly connected to the side wall of the first gear, each of the second gears is fixedly connected to a rotating column, the top of each of the second gears is rotatably connected to a fixed plate, each of the fixed plates is fixedly connected to the side wall of the treatment tank, and a plurality of stirring rods are fixedly connected to the side wall of each of the rotating columns.

[0009] Preferably, the air supply device comprises an aeration blower, the air delivery end of the aeration blower is fixedly connected with an air duct, one end of the air duct is rotatably connected to the upper end of the rotating rod via a rotating bearing, and the air duct is provided with an air flow sensor.

[0010] Preferably, it also includes a control mechanism, which is used to control the stirring speed and aeration volume of the sewage in the treatment tank according to the turbidity, pH, dissolved oxygen concentration, and chemical oxygen demand value of the sewage, so as to improve the treatment efficiency of the sewage.

[0011] Preferably, the regulating mechanism includes a control module, a detection module, and a processing module; The control module is electrically connected to the aeration blower and the motor; The detection module includes a turbidity sensor, a pH sensor, a dissolved oxygen sensor, a COD sensor, a rotation speed detection unit for detecting the rotation and stirring speed of the rotating rod, and an aeration volume detection unit for detecting the aeration volume output by the aeration blower; The processing module includes an evaluation unit and a judgment unit.

[0012] Preferably, the rotation speed detection unit is a laser rotation speed sensor, and the aeration volume detection unit is an air flow sensor.

[0013] Preferably, the control module controls the stirring speed of the rotating rod by controlling the rotation speed of the motor, and the control module controls the aeration volume in the treatment tank by controlling the power of the aeration blower.

[0014] Preferably, the method for using the sewage treatment device is: S1, when sewage is put into the treatment tank, the turbidity sensor, pH sensor, dissolved oxygen sensor, and COD sensor are used to detect the turbidity, pH, dissolved oxygen concentration, and chemical oxygen demand value of the sewage in the treatment tank in real time; S2, start the motor and the aeration blower at the same time, the motor drives the rotating rod to rotate, the rotation of the rotating rod can drive the four second gears to rotate through the first gear, the rotation of the four second gears can drive multiple stirring rods through the rotating column to stir the sewage in the treatment pool; the compressed air generated by the aeration blower is input into the rotating rod through the air duct, and then the air is discharged through the air jet holes on the two air ducts to aerate the sewage; S3, detecting the sewage stirring speed and aeration volume in the treatment tank through the speed detection unit and the aeration volume detection unit in the detection module to form the stirring speed V and the aeration volume M, and transmitting them to the evaluation unit for evaluation. If at least one of them exceeds the corresponding first preset threshold value, a judgment information is formed; S4, summarizing the obtained stirring speed V and aeration volume M to form detection condition information, constructing a data model and optimizing and training it, performing regression analysis on the obtained stirring speed V and aeration volume M through analysis software, obtaining the influence of stirring speed V and aeration volume M on sewage treatment efficiency, and outputting stirring speed influence factor Av and aeration volume influence factor Am; S5, the evaluation unit obtains the stirring speed V and the aeration volume M, and performs dimensionless processing on them, and associates them to form the control coefficient SCL, and its association model is:

[0015] Among them, Av represents the output stirring speed influence factor, 0.44≤Av≤0.68; Am represents the aeration volume influence factor, 0.52≤Am≤0.73; SZS represents the water quality influence coefficient; Q, Y, U, and R represent the real-time turbidity value, pH value, dissolved oxygen concentration value, and chemical oxygen demand value of the sewage in the detection 12 respectively; S6, transmit the acquired control coefficient SCL to the judgment unit for comparison with the preset second preset threshold value. If the control coefficient SCL is not within the range of the second preset threshold value, a corresponding control instruction is generated to control the power of the aeration blower and the speed of the motor. At the same time, the control coefficient SCL of the device is continuously evaluated until the control coefficient SCL is within the second preset threshold value, thereby ensuring the high efficiency of sewage treatment.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The invention is reasonably designed, and the sewage stirring speed and aeration volume are dynamically adjusted according to the turbidity, pH, dissolved oxygen concentration and chemical oxygen demand value of the sewage, thereby ensuring the high efficiency of sewage treatment and having high practicality.

[0017] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 This is a three-dimensional structural schematic diagram of a rural sewage aeration treatment device proposed by the present invention; Figure 2 This is a schematic diagram of a front cross-sectional three-dimensional structure of a rural sewage aeration treatment device proposed by the present invention; Figure 3 It is a schematic diagram of the connection structure between the rotating rod and four rotating columns in the present invention; Figure 4 for Figure 2 A is a schematic diagram of the partially enlarged structure of the middle part; Figure 5 It is a schematic diagram of the control system in the present invention.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Air duct; 2. Turbidity sensor; 3. pH sensor; 4. Dissolved oxygen sensor; 5. COD sensor; 6. Installation box; 7. Laser speed sensor; 8. Motor; 9. Sealed bearing; 10. Support leg; 11. Discharge pipe; 12. Treatment tank; 13. Aeration blower; 14. Air duct; 15. Air flow sensor; 16. Rotary bearing; 17. Rotating rod; 18. Jet hole; 19. First gear; 20. Rotating column; 21. Second gear; 22. Fixed plate; 23. Stirring rod. DETAILED DESCRIPTION

[0020] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail by way of example with reference to the accompanying drawings in the following paragraphs. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0021] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0022] See also Figures 1 to 4 In an embodiment of the present invention, a rural sewage aeration treatment device includes a treatment tank 12, a plurality of legs 10 are fixedly connected to the bottom side wall of the treatment tank 12, a mounting box 6 is fixedly connected to the bottom side wall of the treatment tank 12, a motor 8 is fixedly connected to the inside of the mounting box 6, a rotating rod 17 is fixedly connected to the output shaft of the motor 8, the rotating rod 17 extends through and into the treatment tank 12, the rotating rod 17 is rotatably connected to the bottom side wall of the treatment tank 12 through a sealed bearing 9, a laser speed sensor 7 is installed on the inner side wall of the mounting box 6, the laser speed sensor 7 faces the bottom of the rotating rod 17, and is used to detect the speed of the rotating rod 17. The interior is hollow, and two hollow air ducts 1 are fixedly connected to the side wall of the rotating rod 17. Each air duct 1 is connected to the interior of the rotating rod 17. The two air ducts 1 are close to the bottom of the treatment pool 12. A plurality of air jet holes 18 are opened on the side walls of the two air ducts 1. Each air jet hole 18 is inclined upward at 45 degrees. An air supply device is provided on the top of the rotating rod 17. The air supply device includes an aeration blower 13. The air delivery end of the aeration blower 13 is fixedly connected to an air duct 14. One end of the air duct 14 is rotatably connected to the upper end of the rotating rod 17 through a rotating bearing 16. An air flow sensor 15 is provided on the air duct 14. A turbidity sensor 2, a pH sensor 3, a dissolved oxygen sensor 4, and a COD sensor 5 are provided on the inner wall of the treatment tank 12. A discharge pipe 11 is fixedly connected to the side wall of the treatment tank 12, and a valve is provided on the discharge pipe 11.

[0023] See also Figure 2 and Figure 3A first gear 19 is fixedly connected to the side wall of the rotating rod 17, four second gears 21 are meshedly connected to the side wall of the first gear 19, a rotating column 20 is fixedly connected to each second gear 21, a fixed plate 22 is rotatably connected to the top of each second gear 21, each fixed plate 22 is fixedly connected to the side wall of the treatment pool 12, and a plurality of stirring rods 23 are fixedly connected to the side wall of each rotating column 20.

[0024] The present invention also includes a control mechanism, which is used to control the stirring speed and aeration volume of the sewage in the treatment tank 12 according to the turbidity, pH, dissolved oxygen concentration, and chemical oxygen demand value of the sewage, thereby improving the sewage treatment efficiency.

[0025] Specifically, the control mechanism includes a control module, a detection module, and a processing module; The control module is electrically connected to the aeration blower 13 and the motor 8. The control module controls the rotation speed of the rotating rod 17 by controlling the rotation speed of the motor 8. The control module controls the aeration amount in the treatment tank 12 by controlling the power of the aeration blower 13. The detection module includes a turbidity sensor 2, a pH sensor 3, a dissolved oxygen sensor 4, a COD sensor 5, a rotation speed detection unit for detecting the rotation and stirring speed of the rotating rod 17, and an aeration volume detection unit for detecting the aeration volume output by the aeration blower 13. The rotation speed detection unit is a laser rotation speed sensor 7, and the aeration volume detection unit is an air flow sensor 15; The processing module includes an evaluation unit and a judgment unit.

[0026] The method of using the sewage treatment device is: S1, when sewage is put into the treatment tank 12, the turbidity sensor 2, the pH sensor 3, the dissolved oxygen sensor 4, and the COD sensor 5 are used to detect the turbidity, pH, dissolved oxygen concentration, and chemical oxygen demand value of the sewage in the treatment tank 12 in real time; S2, start the motor 8 and the aeration blower 13 at the same time, the motor 8 drives the rotating rod 17 to rotate, the rotation of the rotating rod 17 can drive the four second gears 21 to rotate through the first gear 19, the rotation of the four second gears 21 can drive the multiple stirring rods 23 to stir the sewage in the treatment tank 12 through the rotating column 20; the compressed air generated by the aeration blower 13 is input into the rotating rod 17 through the air duct 14, and then the air is discharged through the air jet holes 18 on the two air ducts 1 to aerate the sewage; S3, detecting the sewage stirring speed and aeration volume in the treatment tank 12 through the speed detection unit and the aeration volume detection unit in the detection module to form the stirring speed V and the aeration volume M, and transmitting them to the evaluation unit for evaluation. If at least one of them exceeds the corresponding first preset threshold value, a judgment information is formed; S4, summarizing the obtained stirring speed V and aeration volume M to form detection condition information, constructing a data model and optimizing and training it, performing regression analysis on the obtained stirring speed V and aeration volume M through analysis software, obtaining the influence of stirring speed V and aeration volume M on sewage treatment efficiency, and outputting stirring speed influence factor Av and aeration volume influence factor Am; S5, the evaluation unit obtains the stirring speed V and the aeration volume M, and performs dimensionless processing on them, and associates them to form the control coefficient SCL, and its association model is:

[0027] Among them, Av represents the output stirring speed influence factor, 0.44≤Av≤0.68; Am represents the aeration volume influence factor, 0.52≤Am≤0.73; SZS represents the water quality influence coefficient; Q, Y, U, and R represent the real-time turbidity value, pH value, dissolved oxygen concentration value, and chemical oxygen demand value of the sewage in the detection 12 respectively; S6, transmit the acquired control coefficient SCL to the judgment unit for comparison with the preset second preset threshold value. If the control coefficient SCL is not within the range of the second preset threshold value, a corresponding control instruction is generated to control the power of the aeration blower 13 and the speed of the motor 8. At the same time, the control coefficient SCL of the device is continuously evaluated until the control coefficient SCL is within the second preset threshold value, thereby ensuring the high efficiency of sewage treatment.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A rural sewage aeration treatment device, comprising a treatment tank (12), characterized in that: A plurality of legs (10) are fixedly connected to the bottom side wall of the treatment pool (12); a mounting box (6) is fixedly connected to the bottom side wall of the treatment pool (12); a motor (8) is fixedly connected to the interior of the mounting box (6); an output shaft of the motor (8) is fixedly connected to a rotating rod (17); the rotating rod (17) extends through and into the treatment pool (12); the rotating rod (17) is rotatably connected to the bottom side wall of the treatment pool (12) via a sealed bearing (9); a laser rotation speed sensor (7) is installed on the inner side wall of the mounting box (6); the laser rotation speed sensor (7) faces the bottom of the rotating rod (17) and is used to detect the rotation speed of the rotating rod (17); the interior of the rotating rod (17) is hollow. Two hollow air guide tubes (1) are fixedly connected to the side wall of the rotating rod (17), each of the air guide tubes (1) is communicated with the inside of the rotating rod (17), the two air guide tubes (1) are close to the bottom of the treatment tank (12), a plurality of air injection holes (18) are opened on the side walls of the two air guide tubes (1), each of the air injection holes (18) is inclined upward at 45 degrees, an air supply device is provided on the top of the rotating rod (17), a turbidity sensor (2), a pH sensor (3), a dissolved oxygen sensor (4), and a COD sensor (5) are provided on the inner side wall of the treatment tank (12), and a discharge pipe (11) is fixedly connected to the side wall of the treatment tank (12), and a valve is provided on the discharge pipe (11).

2. A rural sewage aeration treatment device according to claim 1, characterized in that: A first gear (19) is fixedly connected to the side wall of the rotating rod (17); four second gears (21) are meshingly connected to the side wall of the first gear (19); a rotating column (20) is fixedly connected to each of the second gears (21); a fixed plate (22) is rotatably connected to the top of each of the second gears (21); each of the fixed plates (22) is fixedly connected to the side wall of the treatment tank (12); and a plurality of stirring rods (23) are fixedly connected to the side wall of each of the rotating columns (20).

3. A rural sewage aeration treatment device according to claim 2, characterized in that: The air supply device comprises an aeration blower (13), the air delivery end of the aeration blower (13) being fixedly connected to an air guide pipe (14), one end of the air guide pipe (14) being rotatably connected to the upper end of a rotating rod (17) via a rotating bearing (16), and an air flow sensor (15) being provided on the air guide pipe (14).

4. A rural sewage aeration treatment device according to claim 3, characterized in that: It also includes a control mechanism, which is used to control the stirring speed and aeration volume of the sewage in the treatment tank (12) according to the turbidity, pH, dissolved oxygen concentration, and chemical oxygen demand value of the sewage, thereby improving the sewage treatment efficiency.

5. A rural sewage aeration treatment device according to claim 4, characterized in that: The regulating mechanism includes a control module, a detection module, and a processing module; The control module is electrically connected to the aeration blower (13) and the motor (8); The detection module comprises a turbidity sensor (2), a pH sensor (3), a dissolved oxygen sensor (4), a COD sensor (5), a rotation speed detection unit for detecting the rotation and stirring speed of the rotating rod (17), and an aeration volume detection unit for detecting the aeration volume output by the aeration blower (13); The processing module includes an evaluation unit and a judgment unit.

6. A rural sewage aeration treatment device according to claim 5, characterized in that: The rotation speed detection unit is a laser rotation speed sensor (7), and the aeration volume detection unit is an air flow sensor (15).

7. A rural sewage aeration treatment device according to claim 6, characterized in that: The control module controls the rotation speed of the rotating rod (17) by controlling the rotation speed of the motor (8), and the control module controls the aeration volume in the treatment tank (12) by controlling the power of the aeration blower (13).

8. A rural sewage aeration treatment device according to claim 7, characterized in that: The method of using the sewage treatment device is: S1, when sewage is put into the treatment tank (12), the turbidity sensor (2), the pH sensor (3), the dissolved oxygen sensor (4), and the COD sensor (5) are used to respectively detect the turbidity, pH, dissolved oxygen concentration, and chemical oxygen demand value of the sewage in the treatment tank (12) in real time; S2, simultaneously starting the motor (8) and the aeration blower (13), the motor (8) driving the rotating rod (17) to rotate, the rotation of the rotating rod (17) driving the four second gears (21) to rotate via the first gear (19), the rotation of the four second gears (21) driving the plurality of stirring rods (23) via the rotating column (20) to stir the sewage in the treatment tank (12); the compressed air generated by the aeration blower (13) is input into the rotating rod (17) via the air guide pipe (14), and then the air is discharged via the air jet holes (18) on the two air guide pipes (1), thereby aerating the sewage; S3, detecting the sewage stirring speed and aeration volume in the treatment tank (12) by means of a rotation speed detection unit and an aeration volume detection unit in the detection module, forming a stirring speed V and an aeration volume M, and transmitting them to an evaluation unit for evaluation, and forming judgment information if at least one of them exceeds a corresponding first preset threshold value; S4, summarizing the obtained stirring speed V and aeration volume M to form detection condition information, constructing a data model and optimizing and training it, performing regression analysis on the obtained stirring speed V and aeration volume M through analysis software, obtaining the influence of stirring speed V and aeration volume M on sewage treatment efficiency, and outputting stirring speed influence factor Av and aeration volume influence factor Am; S5, the evaluation unit obtains the stirring speed V and the aeration volume M, and performs dimensionless processing on them, and associates them to form the control coefficient SCL, and its association model is:

9. Among them, Av represents the output stirring speed influence factor, 0.44≤Av≤0.68; Am represents the aeration volume influence factor, 0.52≤Am≤0.73; SZS represents the water quality influence coefficient; Q, Y, U, and R represent the real-time turbidity value, pH value, dissolved oxygen concentration value, and chemical oxygen demand value of the sewage in the detection 12 respectively; S6, transmitting the acquired control coefficient SCL to the judgment unit for comparison with a preset second preset threshold value. If the control coefficient SCL is not within the range of the second preset threshold value, a corresponding control instruction is generated to control the power of the aeration blower (13) and the speed of the motor (8), and at the same time, the control coefficient SCL of the device is continuously evaluated until the control coefficient SCL is within the second preset threshold value, thereby ensuring the high efficiency of sewage treatment.

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