A control system for a decentralized wastewater treatment plant

Abstract

The application discloses a kind of control systems of decentralized sewage treatment device, belong to sewage treatment field, the control system includes control cabinet, the upper end of control cabinet is provided with photovoltaic panel, the inside of control cabinet is provided with the PLC controller connected with photovoltaic panel, the inside of control cabinet is provided with the bidirectional inverter connected with PLC controller, the inside of control cabinet is provided with the load end connected with bidirectional inverter;The inside of control cabinet is also provided with the battery pack connected with bidirectional inverter. Solar energy is converted into electric energy by photovoltaic panel, replaces traditional power supply mode, significantly reduces the energy consumption of system, meets green, low-carbon environmental protection concept. Extra electric energy is stored using battery pack, avoids the waste of electric energy, while reducing the operating cost of system. The bidirectional flow function of bidirectional inverter makes the system can keep stable operation when electric energy supply is insufficient or excessive, improves the reliability of system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment, and particularly relates to a control system of a decentralized sewage treatment device. BACKGROUND

[0002] With the acceleration of the rural urbanization process, the dispersed characteristics of rural population make decentralized sewage treatment an important and urgent task. Decentralized sewage treatment usually adopts a single household or a joint household on-site treatment method, such as a purification tank, a fermentation tank, a small wetland, etc. These treatment methods mainly rely on the action of artificial enhanced microorganisms. Among them, the purification tank as a small buried integrated sewage treatment equipment is widely used due to its small land occupation, good treatment effect and other advantages.

[0003] The inside of the purification tank realizes the aerobic condition through the aeration device, so that the microorganisms realize the degradation of organic matter and denitrification and phosphorus removal in the alternating environment of anoxic and aerobic conditions. In addition, further chemical phosphorus removal is carried out through an electrochemical device, and disinfection is carried out through a dosing device to ensure that the effluent meets the discharge standard. However, although the purification tank performs well in the treatment effect, the high operation and maintenance cost and unstable effect problems always trouble the users.

[0004] In view of these problems, the Chinese utility model patent with the authorization announcement number CN220907301U discloses an intelligent control decentralized sewage treatment device. The device effectively reduces the operation and maintenance cost of the purification tank and improves the treatment effect through a simplified and efficient system design and a highly integrated control cabinet. At the same time, under the premise of meeting the actual operation and maintenance requirements, the device also reduces the investment of the intelligent control system, and further improves the economy.

[0005] However, although the device has made significant progress in many aspects, there is still a deficiency in energy consumption. Using the conventional power supply mode, the device needs to consume a large amount of electric energy in the running process, which not only increases the operation cost, but also is not conducive to the realization of the energy saving and consumption reduction target.

[0006] Therefore, the present application provides a control system of a decentralized sewage treatment device to solve the above problems. CONTENT OF THE UTILITY MODEL

[0007] The present application provides a control system of a decentralized sewage treatment device, which aims to solve the problems that the existing sewage treatment device adopts a conventional power supply mode, the device needs to consume a large amount of electric energy in the running process, which not only increases the operation cost, but also is not conducive to the realization of the energy saving and consumption reduction target, etc.

[0008] In order to achieve the above object, the application provides the following technical scheme: a control system of a decentralized sewage treatment device, comprising a control cabinet, a photovoltaic panel is arranged at the upper end of the control cabinet, a PLC controller connected with the photovoltaic panel is arranged in the control cabinet, a bidirectional inverter connected with the PLC controller is arranged in the control cabinet, and a load end connected with the bidirectional inverter is arranged in the control cabinet; in order to collect the excess power provided by the photovoltaic panel to the bidirectional inverter and also provide power to the bidirectional inverter, a battery pack connected with the bidirectional inverter is further arranged in the control cabinet; normal power supply mode: in the case of sufficient light, the photovoltaic panel converts solar energy into electric energy, and the electric energy is converted into alternating current required by the load end through the bidirectional inverter; if the electric energy required by the load end is less than the electric energy generated by the photovoltaic panel at this time, the excess electric energy will be stored in the battery pack; energy storage power supply mode: in the case of insufficient light or at night, the electric energy generated by the photovoltaic panel cannot meet the demand of the load end, at this time, the battery pack releases the stored electric energy, and the electric energy is converted into alternating current through the bidirectional inverter to supply the load end.

[0009] The network control terminal is added, so that the operation and maintenance personnel can comprehensively monitor and operate the system without going to the scene, and the work efficiency and response speed are greatly improved.

[0010] Preferably, in order to facilitate the protection of the circuit, a circuit breaker and a fuse are further arranged in the control cabinet, the circuit breaker is installed between the photovoltaic panel and the fuse, and the fuse is connected with the PLC controller. The addition of the circuit breaker and the fuse provides a double protection mechanism for the system, effectively preventing the occurrence of safety accidents such as equipment damage and fire caused by abnormal circuit.

[0011] Preferably, the network control terminal comprises a network terminal, an HMI human-machine interface connected with the network terminal, and a mobile phone terminal, the network terminal is connected with the PLC controller and synchronously transmits data to the HMI human-machine interface and the mobile phone terminal. The HMI human-machine interface and the mobile phone terminal provide rich real-time data display functions, and the operation and maintenance personnel can intuitively understand the running state of the system, so as to timely find and handle problems.

[0012] Preferably, in order to facilitate the installation of the photovoltaic panel, a support for supporting and fixing the photovoltaic panel is fixedly installed on the upper end of the control cabinet through bolts, and the photovoltaic panel is fixedly installed on the support through bolts. Through the support and the fixing bolts, the installation process of the photovoltaic panel becomes simpler and faster. The operation and maintenance personnel can complete the installation and fixation of the photovoltaic panel without complex operation, and the installation efficiency is greatly improved.

[0013] Preferably, the opening end of the control cabinet body is hinged with a cabinet door. By designing a cabinet door with good sealing performance, the system effectively prevents external impurities from eroding the internal equipment of the control cabinet, prolongs the service life of the equipment, and improves the stability and reliability of the system.

[0014] Preferably, the lower end of the control cabinet body is fixedly provided with a bottom plate, and the lower end of the bottom plate is fixedly connected with support legs in symmetry. Through the design of the bottom plate and its support legs, the stability of the control cabinet body is improved. Even in the case of strong wind or uneven ground, the control cabinet body can still run stably, avoiding equipment damage or safety accidents caused by shaking or tilting.

[0015] The application converts solar energy into electrical energy through photovoltaic panels, replacing the traditional power supply mode, significantly reducing the energy consumption of the system, and meeting the green and low-carbon environmental protection concept. The use of battery packs to store excess electrical energy avoids waste of electrical energy and reduces the operating cost of the system. The introduction of the PLC controller enables the system to intelligently adjust according to actual needs, ensuring efficient and stable operation of the system. The bidirectional flow function of the bidirectional inverter enables the system to run stably when the electrical energy supply is insufficient or excessive, improving the reliability of the system.

[0016] The application provides a double protection mechanism for the system by adding circuit breakers and fuses, effectively preventing equipment damage and fire accidents caused by abnormal circuits.

[0017] The application enables operation and maintenance personnel to comprehensively monitor and operate the system without going to the site, greatly improving work efficiency and response speed. The HMI human-machine interface and mobile terminal provide rich real-time data display functions, enabling operation and maintenance personnel to intuitively understand the running state of the system and facilitate timely discovery and processing of problems. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural diagram of a control system of a decentralized sewage treatment device;

[0019] Figure 2 is Figure 1 a structural system diagram in

[0020] In the figure:

[0021] 1, control cabinet body; 2, photovoltaic panel; 201, support; 3, circuit breaker; 4, fuse; 5, PLC controller; 6, bidirectional inverter; 7, load end; 8, battery pack; 9, network control terminal; 901, network terminal; 902, HMI human-machine interface; 903, mobile terminal; 10, cabinet door; 11, bottom plate; 1101, support leg. DETAILED DESCRIPTION

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

[0023] Example 1

[0024] This embodiment provides a control system for a decentralized wastewater treatment device, such as... Figures 1-2 As shown, the control system includes a control cabinet 1, with a photovoltaic panel 2 mounted on its upper end. Inside the control cabinet 1 is a PLC controller 5 connected to the photovoltaic panel 2, a bidirectional inverter 6 connected to the PLC controller 5, and a load terminal 7 connected to the bidirectional inverter 6. To collect excess electricity supplied by the photovoltaic panel 2 to the bidirectional inverter 6 while simultaneously supplying electricity to the bidirectional inverter 6, a battery pack 8 connected to the bidirectional inverter 6 is also installed inside the control cabinet 1. The photovoltaic panel 2 converts solar energy into electrical energy, replacing the traditional power supply mode and significantly reducing system energy consumption, aligning with green and low-carbon environmental protection principles. Storing excess electrical energy using the battery pack 8 avoids energy waste and reduces system operating costs. The introduction of the PLC controller 5 enables the system to intelligently adjust according to actual needs, ensuring efficient and stable operation. The bidirectional flow function of the bidirectional inverter 6 ensures stable system operation even under conditions of insufficient or excessive power supply, improving system reliability. Normal power supply mode: Under sufficient sunlight, photovoltaic panels 2 convert solar energy into electrical energy, which is then converted into AC power required by the load terminal 7 via the bidirectional inverter 6. If the power required by the load terminal 7 is less than the power generated by photovoltaic panels 2, the excess power will be stored in the battery pack 8. Energy storage power supply mode: Under conditions of insufficient sunlight or at night, the power generated by photovoltaic panels 2 cannot meet the needs of the load terminal 7. In this case, the battery pack 8 will release the stored power, which will be converted into AC power by the bidirectional inverter 6 to supply power to the load terminal 7. Intelligent adjustment mode: The PLC controller 5 intelligently adjusts the output power of the bidirectional inverter 6 based on feedback information from photovoltaic panels 2, battery pack 8, and the load terminal 7, ensuring stable system operation under various conditions. Simultaneously, the PLC controller 5 can also intelligently control aeration devices, electrochemical devices, and dosing equipment in the wastewater treatment plant according to actual needs to achieve optimal wastewater treatment results.

[0025] In order to facilitate the installation of the photovoltaic panel 2: the upper end of the control cabinet body 1 is fixedly installed with a support 201 for supporting and fixing the photovoltaic panel 2, and the photovoltaic panel 2 is fixedly installed on the support 201 through bolts. Through the support 201 and the fixing bolts, the installation process of the photovoltaic panel 2 becomes more simple and fast. The maintenance personnel can complete the installation and fixation of the photovoltaic panel 2 without complex operation, greatly improving the installation efficiency. The design of the support makes the maintenance and replacement of the photovoltaic panel 2 more easy. When it is necessary to clean the photovoltaic panel 2 or perform troubleshooting, the maintenance personnel can easily disassemble and reinstall the photovoltaic panel 2, reducing the maintenance difficulty and cost.

[0026] The open end of the control cabinet body 1 is hingedly connected with a cabinet door 10. By designing the cabinet door 10 with good sealing performance, the system effectively prevents the erosion of the internal equipment of the control cabinet by external impurities, prolongs the service life of the equipment, and improves the stability and reliability of the system.

[0027] The lower end of the control cabinet body 1 is fixedly provided with a bottom plate 11, and the lower end of the bottom plate 11 is fixedly connected with support legs 1101. Through the design of the bottom plate 11 and the support legs 1101 thereof, the stability of the control cabinet body 1 is improved. Even in the case of strong wind or uneven ground, the control cabinet body 1 can maintain stable operation, avoiding the occurrence of equipment damage or safety accidents caused by shaking or tilting.

[0028] Embodiment 2

[0029] In order to facilitate the protection of the circuit: the inside of the control cabinet body 1 is further provided with a circuit breaker 3 and a fuse 4, the circuit breaker 3 is installed between the photovoltaic panel 2 and the fuse 4, and the fuse 4 is connected with the PLC controller 5. The addition of the circuit breaker 3 and the fuse 4 provides a double protection mechanism for the system, effectively preventing the occurrence of safety accidents such as equipment damage and fire caused by abnormal circuit. By timely cutting off the abnormal circuit, the circuit breaker 3 and the fuse 4 can ensure the operation of the system in a safe and stable state, avoiding system downtime or performance degradation caused by circuit failure. When the electric energy generated by the photovoltaic panel 2 enters the circuit through the circuit breaker 3, if the current exceeds the rated value of the circuit breaker 3, the circuit breaker 3 will immediately cut off the power supply to prevent excessive current from causing damage to the subsequent circuit and equipment. At the same time, if a short circuit or serious overload occurs in the circuit, the fuse inside the fuse 4 will quickly melt, thereby cutting off the circuit and protecting the PLC controller 5 and other important equipment. After the circuit protection components act, the maintenance personnel need to check and eliminate the fault reason first, and then re-close the circuit breaker 3 or replace the fuse 4 fuse, so that the system returns to normal operation. During this process, the maintenance personnel need to strictly follow the safety operation procedures to ensure safety during operation.

[0030] Embodiment 3

[0031] The network control terminal 9 is added to the control cabinet 1, which enables the operation and maintenance personnel to monitor and operate the system remotely without going to the site, greatly improving the work efficiency and response speed. The HMI human-machine interface 902 and the mobile terminal 903 provide rich real-time data display functions, and the operation and maintenance personnel can intuitively understand the running state of the system, which is convenient for timely discovering and handling problems. Combined with the intelligent control function of the PLC controller 5, the network control terminal 9 can realize intelligent operation and maintenance of the system, predict potential faults through data analysis, take measures in advance, and ensure the stable operation of the system. The realization of remote control and intelligent operation and maintenance reduces the number of on-site inspections of the operation and maintenance personnel, reduces the operation and maintenance cost, and also reduces the work burden of the operation and maintenance personnel. Data acquisition and transmission: The PLC controller 5 collects the running data of the sewage treatment device in real time, and synchronously transmits these data to the HMI human-machine interface 902 and the mobile terminal 903 through the network terminal 901. Remote monitoring and operation: The operation and maintenance personnel can view the real-time running state of the system through the HMI human-machine interface 902 or the mobile terminal 903, including each stage of sewage treatment, the running parameters of the equipment, etc. At the same time, they can also remotely operate through these interfaces, such as adjusting the aeration amount of the aeration device, the current of the electrochemical device, etc. Intelligent alarm and response: When the system detects abnormal conditions or faults, the PLC controller 5 will immediately trigger the alarm mechanism, and send the alarm information to the HMI human-machine interface 902 and the mobile terminal 903 through the network terminal 901. After receiving the alarm information, the operation and maintenance personnel can quickly take measures to troubleshoot and handle the fault. Data analysis and optimization: The network control terminal 9 can also deeply analyze the collected data to identify the running rules and potential problems of the system. The operation and maintenance personnel can optimize and adjust the system according to the analysis results to improve the sewage treatment efficiency and quality.

[0032] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical solution and concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A control system for a decentralized wastewater treatment plant comprising a control cabinet (1), characterized in that: The upper end of the control cabinet body (1) is provided with a photovoltaic panel (2), the inside of the control cabinet body (1) is provided with a PLC controller (5) connected with the photovoltaic panel (2), the inside of the control cabinet body (1) is provided with a bidirectional inverter (6) connected with the PLC controller (5), and the inside of the control cabinet body (1) is provided with a load end (7) connected with the bidirectional inverter (6). The inside of the control cabinet body (1) is also provided with a battery pack (8) connected with the bidirectional inverter (6). The inside of the control cabinet body (1) is also provided with a network control terminal (9).

2. The control system of a decentralized wastewater treatment plant according to claim 1, characterized in that: The inside of the control cabinet body (1) is also provided with a circuit breaker (3) and a fuse (4), the circuit breaker (3) is installed between the photovoltaic panel (2) and the fuse (4), and the fuse (4) is connected with the PLC controller (5).

3. The control system of a decentralized wastewater treatment device according to claim 1, characterized in that: The network control terminal (9) comprises a network terminal (901), an HMI man-machine interface (902) connected with the network terminal (901) and a mobile phone terminal (903), the network terminal (901) is connected with the PLC controller (5) and synchronously transmits data to the HMI man-machine interface (902) and the mobile phone terminal (903).

4. The control system of a decentralized wastewater treatment device according to claim 1, characterized in that: The upper end of the control cabinet body (1) is fixedly provided with a support (201) for supporting and fixing the photovoltaic panel (2) through bolts, and the photovoltaic panel (2) is fixedly installed on the support (201) through bolts.

5. The control system of the decentralized wastewater treatment device according to claim 1, characterized in that: The opening end of the control cabinet body (1) is hingedly connected with a cabinet door (10).

6. The control system of a decentralized wastewater treatment device according to claim 1, characterized in that: The lower end of the control cabinet body (1) is fixedly provided with a bottom plate (11), and the lower end of the bottom plate (11) is fixedly connected with support legs (1101) in symmetry.

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