Multistage biological rotary drum sewage treatment device

Abstract

The invention discloses a multistage biological rotary drum sewage treatment device which comprises a first sedimentation tank, a filtering assembly, a first-stage biological rotary drum, a middle sedimentation tank, a second-stage biological rotary drum and a second sedimentation tank, the first-stage biological rotary drum comprises nine first biological rotary drums, the nine first biological rotary drums are all connected in series, and the middle sedimentation tank is connected with the second sedimentation tank. Three of the nine first biological rotary drums, which are close to the filtering assembly, are connected with the filtering assembly; one end of the middle sedimentation tank is connected with the three first biological rotary drums close to the middle sedimentation tank. Therefore, the PLC can flexibly divide the nine first biological rotary drums into different groups for parallel or series treatment according to the actual pollution degree of the sewage, so that the treatment efficiency is improved, the adaptability and flexibility of the device are enhanced, the device can cope with the sewage with different pollution degrees, and meanwhile, the sewage treatment efficiency is improved. And the filtering device additionally arranged behind the first sedimentation tank can effectively remove suspended matters and particulate matters, so that the biological rotating drum is prevented from being blocked.

Description

Technical Field

[0001] The present application relates to the technical field of sewage treatment, and in particular to a multi-stage biological drum sewage treatment device. Background Art

[0002] With the acceleration of industrialization and the improvement of urbanization, sewage treatment issues have become increasingly prominent and have become one of the key issues in the field of environmental protection. Traditional sewage treatment methods often have disadvantages such as low treatment efficiency, high energy consumption, and large land occupation, which are difficult to meet the current social demand for efficient, energy-saving, and environmentally friendly sewage treatment.

[0003] In order to solve the above problems, a multi-stage biological drum sewage treatment device came into being. This device realizes multi-stage treatment and deep purification of sewage through a series combination of multi-stage biological drums and sedimentation tanks. However, the existing multi-stage biological drum sewage treatment device still has deficiencies in intelligence and automation, and cannot be flexibly adjusted according to the actual pollution level of sewage, resulting in unstable treatment effect and high treatment cost.

[0004] Specifically, the existing multi-stage biological drum sewage treatment device can usually only work according to a fixed treatment process and cannot be intelligently controlled according to the degree of sewage pollution. When the sewage pollution level is relatively light, the device may over-process, resulting in a waste of energy and resources; and when the sewage pollution level is relatively heavy, the device may not be able to effectively remove pollutants, resulting in substandard effluent water quality. Summary of the invention

[0005] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0006] To this end, the first purpose of the present application is to propose a multi-stage biological drum sewage treatment device. The PLC controller can flexibly divide the nine first biological drums into different groups for parallel or series treatment according to the actual pollution degree of the sewage. This not only improves the treatment efficiency, but also enhances the adaptability and flexibility of the device. It can cope with sewage with different pollution degrees and ensure that the effluent water quality always meets the standards.

[0007] The second purpose of the present application is to propose a multi-stage biological drum sewage treatment device, in which a filtering device is added after the first sedimentation tank. Through the filtering device, suspended matter, particulate matter and other impurities in the sewage can be effectively removed to prevent these impurities from entering the subsequent biological drum treatment unit with the water flow, thereby avoiding the water flow in the sedimentation tank from directly impacting and clogging the biological drum, especially the first few drums, ensuring the smooth progress of the entire treatment process, not only improving the treatment efficiency, but also extending the service life of the biological drum and reducing maintenance costs.

[0008] To achieve the above-mentioned purpose, the first embodiment of the present application proposes a multi-stage biological drum sewage treatment device, including a first sedimentation tank, a filter component, a first-stage biological drum, an intermediate sedimentation tank, a second-stage biological drum and a second sedimentation tank, wherein a raw sewage pipe is arranged at one end of the first sedimentation tank; one end of the filter component is connected to the first sedimentation tank; the first-stage biological drum includes nine first biological drums, wherein all the nine first biological drums are connected in series with each other, and three first biological drums of the nine first biological drums close to the filter component are connected to the filter component; the intermediate sedimentation tank is arranged on one side of the first-stage biological drum, and one end of the intermediate sedimentation tank is connected to the three first biological drums close to the intermediate sedimentation tank; the second-stage biological drum includes three second biological drums, wherein the three second biological drums are connected to each other respectively, and one second biological drum of the three second biological drums close to the intermediate sedimentation tank is connected to the intermediate sedimentation tank, and one second biological drum of the three second biological drums close to the second sedimentation tank is connected to the second sedimentation tank; a water outlet is arranged at the other end of the second sedimentation tank.

[0009] In a multi-stage biological drum sewage treatment device according to an embodiment of the present application, the PLC controller can flexibly divide the nine first biological drums into different groups for parallel or series treatment according to the actual pollution degree of the sewage, which not only improves the treatment efficiency, but also enhances the adaptability and flexibility of the device, and is capable of handling sewage with different pollution degrees, ensuring that the effluent water quality always meets the standards. At the same time, the filtration device added after the first sedimentation tank effectively removes suspended matter and particulate matter, prevents clogging of the biological drum, and ensures a smooth treatment process.

[0010] In addition, the multi-stage biological drum sewage treatment device proposed in the present application may also have the following additional technical features:

[0011] In one embodiment of the present application, the filter assembly includes a filter tank, a water inlet and a double-layer filter plate, wherein the filter tank is connected to the first sedimentation tank pipeline; the water inlet is arranged at the upper end of one side of the filter tank; and the double-layer filter plates are respectively arranged on the filter tank.

[0012] In one embodiment of the present application, the nine first biological drums each include a first treatment tank, a first turntable and a first drive motor, wherein the first treatment tanks are arranged in three rows, three at a time, and are connected to each other in series by pipes; the first turntable is rotatably disposed in the first treatment tank; and the first drive motor is connected to one end of the first turntable.

[0013] In one embodiment of the present application, the three second biological drums each include a second treatment tank, a second turntable and a second drive motor, wherein the second treatment tanks are arranged equidistantly and side by side and are interconnected by pipes; the second turntable is rotatably arranged in the second treatment tank; and the second drive motor is connected to one end of the second turntable.

[0014] In one embodiment of the present application, a PLC controller is also included, wherein the output ends of both ends of the PLC controller are respectively provided with a sewage detector and an output module, and the PLC controller is electrically connected to the sewage detector and the output module respectively; the sewage detector is arranged in the first sedimentation tank.

[0015] In one embodiment of the present application, sewage pipes are connected to the bottoms of the first sedimentation tank, the filtration tank, the intermediate sedimentation tank and the second sedimentation tank.

[0016] In one embodiment of the present application, the output module includes a first control valve mechanism, a second control valve mechanism, a first control valve combination mechanism, a first rotation combination mechanism, a third control valve mechanism, three fourth control valve mechanisms, three first rotation mechanisms, a fifth control valve mechanism and four discharge valve mechanisms.

[0017] The advantages of this application compared with the existing technology are:

[0018] (1) By integrating a sewage pollution degree detection device, real-time monitoring of the sewage pollution degree is achieved. Combined with the intelligent control function of the PLC controller, the device can automatically adjust the working mode according to the monitoring data to ensure stable and efficient treatment effects.

[0019] (2) The PLC controller can flexibly divide the nine first biological drums into different groups for parallel or series treatment according to the actual pollution level of the sewage. This not only improves the treatment efficiency, but also enhances the adaptability and flexibility of the device. It can cope with sewage of different pollution levels and ensure that the effluent water quality always meets the standards.

[0020] (3) A filter device is added after the first sedimentation tank. Through this filter device, suspended matter, particulate matter and other impurities in the sewage can be effectively removed to prevent these impurities from entering the subsequent biological drum treatment unit with the water flow, thereby avoiding the water flow in the sedimentation tank from directly impacting and clogging the biological drum, especially the first few drums, ensuring the smooth progress of the entire treatment process, not only improving the treatment efficiency, but also extending the service life of the biological drum and reducing maintenance costs.

[0021] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0023] Figure 1 It is a three-dimensional diagram of a multi-stage biological drum sewage treatment device according to one embodiment of the present application;

[0024] Figure 2 It is a three-dimensional diagram of a multi-stage biological drum sewage treatment device according to another embodiment of the present application;

[0025] Figure 3 A top view of a multi-stage biological drum sewage treatment device according to an embodiment of the present application;

[0026] Figure 4 It is a structural schematic diagram of a multi-stage biological drum sewage treatment device according to one embodiment of the present application;

[0027] Figure 5 It is a connection diagram of a multi-stage biological drum sewage treatment device according to one embodiment of the present application.

[0028] As shown in the figure: 1. the first sedimentation tank; 2. the filter assembly; 3. the first biological drum; 4. the intermediate sedimentation tank; 5. the second biological drum; 6. the second sedimentation tank; 7. the PLC controller; 71. the sewage detector; 72. the output module; 8. the sewage pipe; 11. the raw sewage pipeline; 31. the first biological drum; 51. the second biological drum; 61. the water outlet; 21. the filter tank; 22. the water inlet; 23. the double-layer filter plate; 311. the first treatment tank; 312. the first turntable; 313. the first drive motor; 511. the second treatment tank; 512. the second turntable; 513. the second drive motor; 721. the first control valve mechanism; 722. the second control valve mechanism; 723. the first control valve combination mechanism; 724. the first rotation combination mechanism; 725. the third control valve mechanism; 726. the fourth control valve mechanism; 727. the first rotation mechanism; 728. the fifth control valve mechanism; 729. the discharge valve mechanism. DETAILED DESCRIPTION

[0029] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. On the contrary, the embodiments of the present application include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.

[0030] A multi-stage biological drum sewage treatment device according to an embodiment of the present application is described below in conjunction with the accompanying drawings.

[0031] The embodiment of the present application provides a multi-stage biological drum sewage treatment device, which effectively removes organic matter, nitrogen, phosphorus and other pollutants in sewage through a multi-stage biological treatment process to improve the effluent water quality. The device is mainly composed of a first sedimentation tank 1, a filter assembly 2, a two-stage biological drum (first stage and second stage), an intermediate sedimentation tank 4 and a second sedimentation tank 6.

[0032] like Figure 1-Figure 5 As shown, a multi-stage biological drum sewage treatment device according to an embodiment of the present application may include a first sedimentation tank 1, a filter assembly 2, a first-stage biological drum 3, an intermediate sedimentation tank 4, a second-stage biological drum 5 and a second sedimentation tank 6, wherein a raw sewage pipe 11 is provided at one end of the first sedimentation tank 1.

[0033] It can be understood that sewage enters the first sedimentation tank 1 through the original sewage pipe 11, and after gravity sedimentation, large suspended particles are deposited at the bottom of the tank, and the supernatant flows into the subsequent filter component 2 through the pipe, which is used to remove large suspended particles and some organic matter in the sewage as the initial stage of sewage treatment.

[0034] One end of the filter assembly 2 is connected to the first sedimentation tank 1 .

[0035] It can be understood that the filter component 2 adopts double-layer filtration of fine sand filtration and fiber filtration to remove suspended matter in the sewage through physical interception, further remove suspended matter and fine particles in the sewage, and provide relatively clear inlet water for the biological drum.

[0036] The first-stage biological drum 3 includes nine first biological drums 31 , wherein the nine first biological drums 31 are all connected in series with each other, and three first biological drums of the nine first biological drums 31 close to the filter assembly 2 are all connected to the filter assembly 2 .

[0037] It can be understood that the first-stage biological drum 3 is composed of nine first biological drums 31 connected in series to form a multi-stage biological treatment system. The sewage flows through each biological drum in turn, and the microorganisms on the biofilm use organic matter to grow and reproduce, and remove organic matter and some nitrogen, phosphorus and other pollutants in the sewage through biodegradation.

[0038] The intermediate sedimentation tank 4 is arranged at one side of the first biological drum 3 , and one end of the intermediate sedimentation tank 4 is connected to the three first biological drums close to the intermediate sedimentation tank 4 .

[0039] It can be understood that the intermediate sedimentation tank 4 receives the effluent from the first-stage biological drum 3, removes suspended matter through gravity sedimentation, provides stable water quality conditions for the previous-stage biological treatment, and provides inlet water for the second-stage biological drum 5. After treatment in the first-stage biological drum 3, intermediate sedimentation is carried out to remove suspended matter and biofilm detached materials in the sewage.

[0040] The second-stage biological drum 5 includes three second biological drums 51, wherein the three second biological drums 51 are connected to each other respectively, and one of the three second biological drums 51 close to the middle sedimentation tank 4 is connected to the middle sedimentation tank 4, and one of the three second biological drums 51 close to the second sedimentation tank 6 is connected to the second sedimentation tank 6, and a water outlet 61 is provided at the other end of the second sedimentation tank 6.

[0041] It can be understood that the second-stage biological drum 5 is composed of three second biological drums 51, which are connected to each other. The sewage flows through each biological drum in turn, and the microorganisms on the biofilm continue to degrade organic matter and carry out biological reactions such as nitrification and denitrification, further removing organic matter, nitrogen, phosphorus and other pollutants in the sewage, thereby improving the effluent quality.

[0042] The second sedimentation tank 6 receives the effluent from the second-stage biological drum 5 and removes suspended matter by gravity sedimentation. Finally, the treated clean water is discharged through the outlet 61. After being treated in the second-stage biological drum 5, final sedimentation is carried out to remove suspended matter and biofilm detached materials to ensure that the effluent water quality meets the standards.

[0043] Specifically, according to the pollution degree of the sewage, the sewage treatment mode of the nine first biological drums 31 can be flexibly adjusted:

[0044] Light Pollution Mode:

[0045] When the sewage pollution level is relatively light, the nine first biological drums 31 are divided into three groups, and each group of three biological drums are connected in series to treat the sewage.

[0046] In this mode, sewage is dispersed into three groups of biological drums for treatment. Each group of biological drums can work independently without interfering with each other, thus improving the treatment efficiency.

[0047] Moderate pollution mode:

[0048] When the sewage pollution level is moderate, the nine first biological drums 31 are divided into two groups, each with four biological drums (note: there is another biological drum as a backup or used in combination with other groups, or fine-tuned according to actual needs) connected in series to treat the sewage.

[0049] In this mode, each set of bio-drums provides a longer treatment path and more biomass to degrade organic matter more efficiently.

[0050] Heavy pollution mode:

[0051] When the sewage pollution level is very serious, all nine first biological drums 31 are connected in series to jointly treat one stream of sewage.

[0052] In this mode, the sewage flows through all nine first biological drums 31 in sequence and is biodegraded to the greatest extent, ensuring that the effluent water quality meets the standards.

[0053] In one embodiment of the present application, Figure 4 As shown, the filter assembly 2 includes a filter tank 21, a water inlet 22 and a double-layer filter plate 23, wherein the filter tank 21 is connected to the first sedimentation tank 1 by a pipeline, the water inlet 22 is arranged at the upper end of one side of the filter tank 21, and the double-layer filter plates 23 are respectively arranged on the filter tank 21.

[0054] It can be understood that the sewage in the first sedimentation tank 1 enters the filter tank 21 through the water inlet 22, and impurities such as suspended matter and particulate matter in the sewage can be effectively removed through the double-layer filter plate 23.

[0055] The double-layer filter plate 23 uses fine sand filtration and fiber filtration. When sewage flows through the double-layer filter plate 23, impurities will be retained by the filter layer, while clean water will continue to flow through the filter layer.

[0056] In one embodiment of the present application, Figure 1 As shown, the nine first biological drums 31 each include a first treatment tank 311, a first turntable 312 and a first drive motor 313, wherein the first treatment tanks 311 are arranged in three rows, three at a time, and are connected to each other in series with pipes, the first turntable 312 is rotatably disposed in the first treatment tank 311, and the first drive motor 313 is connected to one end of the first turntable 312.

[0057] It can be understood that the first turntable 312 is driven to rotate in the first treatment tank 311 by the rotation of the first driving motor 313. The first treatment tanks 311 are arranged in three rows, with a total of three rows, and each row is connected in series through pipes. This arrangement not only optimizes space utilization, but also ensures that the sewage can flow through each treatment tank in turn and receive continuous biological treatment.

[0058] It should be noted that the first turntable 312 described in this embodiment is made of corrosion-resistant and wear-resistant materials to ensure its stability and durability in long-term operation. A large number of microorganisms are attached to the first turntable 312. These microorganisms are in full contact with the sewage when the first turntable 312 rotates, thereby achieving biological degradation of organic matter in the sewage.

[0059] In one embodiment of the present application, Figure 2 As shown, the three second biological drums 51 each include a second treatment tank 511, a second turntable 512 and a second drive motor 513, wherein the second treatment tanks 511 are equidistantly arranged side by side and are interconnected by pipes, the second turntable 512 is rotatably arranged in the second treatment tank 511, and the second drive motor 513 is connected to one end of the second turntable 512.

[0060] It can be understood that the second turntable 512 is driven to rotate on the second treatment tank 511 by the rotation of the second driving motor 513. The three second treatment tanks 511 are arranged equidistantly and side by side and are connected to each other by pipes, ensuring that the sewage can flow through each second treatment tank 511 in turn.

[0061] It should be noted that a large number of microorganisms are also attached to the second turntable 512 described in this embodiment. These microorganisms are in full contact with the sewage when the second turntable 512 rotates, thereby achieving further biodegradation of remaining organic matter and other pollutants in the sewage.

[0062] In one embodiment of the present application, Figure 5 As shown, it also includes a PLC controller 7, wherein the output ends of both ends of the PLC controller 7 are respectively provided with a sewage detector 71 and an output module 72, and the PLC controller 7 is electrically connected to the sewage detector 71 and the output module 72 respectively, and the sewage detector 71 is arranged in the first sedimentation tank 1.

[0063] It can be understood that the PLC controller 7, as a central control unit, is responsible for receiving signals from the sewage detector 71 and sending control instructions to other devices through the output module 72 according to the preset program logic.

[0064] The sewage detector 71 is a sensor for detecting various parameters in sewage (such as pH value, turbidity, dissolved oxygen, etc.). The sewage detector 71 is arranged in the first sedimentation tank 1 for real-time monitoring of the quality of sewage. By detecting key parameters in sewage, the sewage detector 71 can provide accurate data support for the PLC controller 7, thereby realizing precise control of the sewage treatment process.

[0065] The output module 72 is an important component of the PLC controller 7. It is responsible for converting the processing results of the PLC controller 7 into specific control signals and outputting them to other devices in the sewage treatment system.

[0066] It should be noted that the output module 72 described in this embodiment includes output elements such as relays and transistors, which are used to control the operation of equipment such as sewage pumps, valves, and agitators. Through the output module 72, the PLC controller 7 can achieve precise control of each link in the sewage treatment process to ensure the efficient operation of the entire system.

[0067] In one embodiment of the present application, Figure 1-Figure 2 As shown, the bottoms of the first sedimentation tank 1 , the filter tank 21 , the intermediate sedimentation tank 4 and the second sedimentation tank 6 are all connected with a sewage pipe 8 .

[0068] It can be understood that the sludge and impurities generated by the filter tank 21, the intermediate sedimentation tank 4 and the second sedimentation tank 6 are promptly and effectively discharged through the sewage pipe 8, thereby maintaining the clean, efficient and stable operation of the entire system.

[0069] In one embodiment of the present application, Figure 5 As shown, the output module 72 includes a first control valve mechanism 721, a second control valve mechanism 722, a first control valve combination mechanism 723, a first rotation combination mechanism 724, a third control valve mechanism 725, three fourth control valve mechanisms 726, three first rotation mechanisms 727, a fifth control valve mechanism 728 and four discharge valve mechanisms 729.

[0070] It can be understood that the first control valve mechanism 721 is started by the PLC controller 7 so that the sewage enters the first sedimentation tank 1 through the original sewage pipe 11, and the second control valve mechanism 722 is started to control the sewage after sedimentation to enter the filter component 2.

[0071] The sewage in the filter assembly 2 can be divided into strands for treatment through the first control valve combination mechanism 723, and the sewage is graded according to the sewage detector 71 into primary, intermediate and advanced treatments. The series connection of each stage is controlled by the first control valve combination mechanism 723, and at the same time, the nine first turntables 312 are controlled to rotate separately through the first rotation combination mechanism 724 to treat the sewage, and finally the treated sewage flows into the intermediate sedimentation tank 4.

[0072] The third control valve mechanism 725 is used to allow the sewage in the intermediate sedimentation tank 4 to enter the second-stage biological drum 5. The three fourth control valve mechanisms 726 are used to control the sewage to flow into the three second treatment tanks 511 respectively. At the same time, the three first rotating mechanisms 727 are used to rotate the three second turntables 512 to treat the sewage again. Finally, the treated water flows into the second sedimentation tank 6.

[0073] The water is discharged through the water outlet 61 through the fifth control valve mechanism 728 , and the sludge and impurities generated in the filter tank 21 , the intermediate sedimentation tank 4 and the second sedimentation tank 6 are removed in a timely and effective manner through the four discharge valve mechanisms 729 .

[0074] Specific use process:

[0075] 1. Sewage introduction

[0076] 1. The first control valve mechanism 721 of the PLC controller 7 is started to open the valve of the raw sewage pipe 11 to allow the sewage to enter the first sedimentation tank 1.

[0077] 2. Preliminary precipitation treatment

[0078] 1. The sewage is subjected to gravity sedimentation in the first sedimentation tank 1, and large suspended solids are deposited at the bottom of the tank.

[0079] 2. The PLC controller 7 determines the subsequent sewage treatment level according to the sewage quality data monitored in real time by the sewage detector 71.

[0080] 3. Filtration

[0081] 1. The supernatant after precipitation flows into the filter component 2 through the pipeline.

[0082] 2. In the filter tank 21, the sewage is filtered through fine sand and fiber through the double-layer filter plate 23 to remove suspended matter and fine particles.

[0083] 3. The PLC controller 7 controls the inflow and outflow of sewage through the second control valve mechanism 722 to ensure the continuity and stability of the filtration process.

[0084] 4. First-stage biological drum treatment

[0085] 1. Mild pollution mode: When the sewage detector 71 detects that the sewage pollution is relatively light, the PLC controller 7 automatically switches to the mild pollution mode, and the nine first biological drums 31 are divided into three groups, and each group of three biological drums are connected in series to treat the sewage.

[0086] 2. Moderate pollution mode: When the sewage detector 71 detects that the sewage pollution level is moderate, the PLC controller 7 automatically switches to the moderate pollution mode. The nine first biological drums 31 are divided into two groups. Four biological drums in each group are connected in series to treat the sewage. The remaining biological drum is used as a backup or in combination with other groups according to actual needs.

[0087] 3. Severe pollution mode: When the sewage detector 71 detects that the sewage is seriously polluted, the PLC controller 7 automatically switches to the severe pollution mode. At this time, the nine first biological drums 31 are all connected in series to jointly treat a stream of sewage. The sewage flows through all nine biological drums in turn to obtain the maximum degree of biodegradation treatment.

[0088] 4. The treated sewage flows into the intermediate sedimentation tank 4 through a pipe.

[0089] 5. Intermediate precipitation treatment

[0090] 1. In the intermediate sedimentation tank 4, the sewage is subjected to gravity sedimentation again to remove suspended solids and biofilm detached materials.

[0091] 6. Secondary biological drum treatment

[0092] 1. The precipitated sewage enters the second-stage biological drum 5 through the third control valve mechanism 725.

[0093] 2. The sewage is divided into two streams and enters three second biological drums 51 for treatment in sequence.

[0094] 3. The PLC controller 7 controls the inflow and outflow of sewage and the rotation speed and time of the second rotating disk 512 through the three fourth control valve mechanisms 726 and the three first rotating mechanisms 727 to achieve further biodegradation treatment.

[0095] 7. Final sedimentation and water discharge

[0096] 1. The treated sewage flows into the second sedimentation tank 6, where the last suspended solids are removed by gravity sedimentation.

[0097] 2. The PLC controller 7 controls the opening of the water outlet 61 through the fifth control valve mechanism 728 to discharge the treated clean water.

[0098] 8. Wastewater Discharge

[0099] 1. Regularly discharge the sludge and impurities in the filter tank 21, the intermediate sedimentation tank 4 and the second sedimentation tank 6 through four discharge valve mechanisms 729.

[0100] It should be noted that the control method of the present application can be automatically controlled by a controller, and the control method of the controller can be implemented by simple programming by technicians in this field, which is common knowledge in this field, and the present application is mainly used to protect mechanical structures, so the present application will no longer explain the control method and circuit connection in detail.

[0101] In summary, in a multi-stage biological drum sewage treatment device according to an embodiment of the present application, the PLC controller can flexibly divide the nine first biological drums into different groups for parallel or series treatment according to the actual pollution degree of the sewage, which not only improves the treatment efficiency, but also enhances the adaptability and flexibility of the device, and is capable of handling sewage with different pollution degrees, ensuring that the effluent water quality always meets the standards. At the same time, the filtration device added after the first sedimentation tank effectively removes suspended matter and particulate matter, prevents clogging of the biological drum, and ensures a smooth treatment process.

[0102] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0103] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0104] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A multi-stage biological drum sewage treatment device, characterized in that: The invention comprises a first sedimentation tank (1), a filtering assembly (2), a first-stage biological drum (3), an intermediate sedimentation tank (4), a second-stage biological drum (5) and a second sedimentation tank (6), wherein: A raw sewage pipe (11) is provided at one end of the first sedimentation tank (1); One end of the filtering component (2) is connected to the first sedimentation tank (1); The first-stage biological drum (3) comprises nine first biological drums (31), wherein: The nine first biological drums (31) are all connected in series with each other, and three of the nine first biological drums (31) close to the filter assembly (2) are all connected to the filter assembly (2); The intermediate sedimentation tank (4) is arranged on one side of the first-stage biological drum (3), and one end of the intermediate sedimentation tank (4) is connected to three first biological drums close to the intermediate sedimentation tank (4); The second biological drum (5) comprises three second biological drums (51), wherein: The three second biological rotary drums (51) are connected to each other respectively, and one of the three second biological rotary drums (51) close to the intermediate sedimentation tank (4) is connected to the intermediate sedimentation tank (4), and one of the three second biological rotary drums (51) close to the second sedimentation tank (6) is connected to the second sedimentation tank (6); The other end of the second sedimentation tank (6) is provided with a water outlet (61).

2. A multi-stage biological drum sewage treatment device according to claim 1, characterized in that: The filter assembly (2) comprises a filter tank (21), a water inlet (22) and a double-layer filter plate (23), wherein: The filtering tank (21) is connected to the first sedimentation tank (1) via a pipeline; The water inlet (22) is arranged at an upper end of one side of the filter tank (21); The double-layer filter plates (23) are respectively arranged on the filter tanks (21).

3. A multi-stage biological drum sewage treatment device according to claim 1, characterized in that: Each of the nine first biological drums (31) comprises a first treatment tank (311), a first rotating disk (312) and a first driving motor (313), wherein: The first treatment tanks (311) are arranged in three rows, three at a time, and are connected in series with pipelines; The first rotating disk (312) is rotatably disposed in the first treatment tank (311); The first driving motor (313) is connected to one end of the first rotating disk (312).

4. The multi-stage biological drum sewage treatment device according to claim 1 is characterized in that: The three second biological drums (51) each include a second treatment tank (511), a second rotating disk (512) and a second driving motor (513), wherein: The second treatment tanks (511) are arranged side by side at equal distances and are interconnected by pipelines; The second rotating disk (512) is rotatably disposed in the second treatment tank (511); The second driving motor (513) is connected to one end of the second rotating disk (512).

5. The multi-stage biological drum sewage treatment device according to claim 1 is characterized in that: It also includes a PLC controller (7), wherein: Output ends at both ends of the PLC controller (7) are respectively provided with a sewage detector (71) and an output module (72), and the PLC controller (7) is electrically connected to the sewage detector (71) and the output module (72) respectively; The sewage detector (71) is arranged in the first sedimentation tank (1).

6. A multi-stage biological drum sewage treatment device according to claim 2, characterized in that: The bottoms of the first sedimentation tank (1), the filter tank (21), the intermediate sedimentation tank (4) and the second sedimentation tank (6) are all connected with sewage pipes (8).

7. The multi-stage biological drum sewage treatment device according to claim 5, characterized in that: The output module (72) comprises a first control valve mechanism (721), a second control valve mechanism (722), a first control valve combination mechanism (723), a first rotation combination mechanism (724), a third control valve mechanism (725), three fourth control valve mechanisms (726), three first rotation mechanisms (727), a fifth control valve mechanism (728) and four discharge valve mechanisms (729).

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