Distributed sewage station measurement and control device based on A / O process

Abstract

The utility model discloses a distributed sewage station measurement and control device based on an A / O process, which comprises a power supply unit, a data acquisition unit, a controller unit, an output control unit, a communication transmission unit and a display interaction unit, and is characterized in that the controller unit is respectively connected with the data acquisition unit, the output control unit, the communication transmission unit and the display interaction unit; the data acquisition unit is used for acquiring water quality data detected by the water quality sensor and sending the water quality data to the controller unit for processing, the controller unit sends a processing result to the display interaction unit, and the output control unit is used for outputting a control instruction to on-site electrical equipment. The communication transmission unit is used for achieving data transmission of the controller unit, remote monitoring and management of scattered sewage treatment stations can be achieved, managers can master the operation conditions of all the stations at any time and find and solve problems in time, the management efficiency is greatly improved, and the operation cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a distributed wastewater treatment station monitoring and control device based on the A / O process. Background Technology

[0002] With the development of my country's rural economy, the problem of rural domestic sewage treatment has become increasingly prominent. Currently, rural sewage treatment facilities mostly adopt a distributed layout. While this layout is suitable for the dispersed nature of rural residences, it also presents the following technical problems: 1. Existing monitoring systems are mostly designed for large-scale urban sewage treatment plants and are not suitable for the characteristics of rural distributed sewage treatment stations; 2. The actual treatment scale of rural domestic sewage is relatively small, resulting in high operating costs. Existing technologies lack cost-effective monitoring solutions for small-scale distributed sewage treatment stations; 3. Distributed village domestic sewage treatment facilities face the problem of numerous and dispersed sites, making it difficult for existing monitoring systems to effectively manage these many scattered sites; 4. Existing monitoring systems focus primarily on data acquisition and transmission, lacking feedback control. These problems lead to high management costs and low problem-solving efficiency for rural distributed sewage treatment stations. Utility Model Content

[0003] The purpose of this invention is to provide a distributed wastewater treatment plant monitoring and control device based on the A / O process, thereby improving the management efficiency of distributed wastewater treatment plants and reducing operating costs.

[0004] To achieve the aforementioned objectives, the technical solution adopted by this utility model is as follows:

[0005] A distributed wastewater treatment plant monitoring and control device based on A / O process includes a power supply unit, a data acquisition unit, a controller unit, an output control unit, a communication transmission unit, and a display and interaction unit, wherein the controller unit is connected to the data acquisition unit, the output control unit, the communication transmission unit, and the display and interaction unit.

[0006] The power supply unit supplies power to the entire controller unit and the electrical equipment and sensors at the A / O process wastewater treatment site. The data acquisition unit collects water quality data detected by the water quality sensors and sends it to the controller unit for processing. The controller unit sends the processing results to the display and interaction unit. The output control unit outputs control commands to the field electrical equipment. The communication transmission unit transmits data to the controller unit. The display and interaction unit displays the data, facilitating the setting of equipment parameter information. It supports displaying data on various screens such as the control box configuration screen, mobile / computer cloud platform, and monitoring center large screen, allowing on-site and remote personnel to view and operate the data at any time.

[0007] Furthermore, the power supply unit adopts a three-phase four-wire power supply system with a rated voltage of 380V / 220V and a frequency of 50Hz. It is equipped with a 30kVA isolation transformer to provide a stable power supply for the entire control unit and equipment at the wastewater treatment site. The power supply unit integrates protective components such as surge protectors, circuit breakers, contactors, and thermal relays, providing power support for electrical equipment such as aerators, return pumps, booster pumps, dosing equipment, blowers, submersible mixers, and various sensors. The power supply unit is also equipped with a 2kVA UPS uninterruptible power supply, which can provide at least 30 minutes of emergency power supply during mains power outages to ensure the normal operation of critical equipment and data acquisition systems.

[0008] The data acquisition unit consists of multiple analog and digital acquisition modules, employs a 24-bit high-precision A / D converter, and has a sampling frequency of up to 100Hz.

[0009] The data acquisition unit can simultaneously connect to multiple water quality sensors or online monitoring devices, including pH sensors, dissolved oxygen sensors, online ammonia nitrogen monitoring, online total nitrogen monitoring, online COD monitoring, online total phosphorus monitoring, suspended solids sensors, and temperature sensors. The data acquisition unit connects to each sensor via an RS485 bus or a 4-20mA current loop. After preliminary filtering and calibration, the acquired data is transmitted to the controller unit via the internal bus.

[0010] The controller unit uses an industrial-grade ARM processor. This unit receives raw data from the data acquisition unit, processes the data, and transmits it to the display and interaction unit for presentation. Simultaneously, it generates control commands based on preset control logic and sends them to the output control unit. The controller unit is also responsible for local data storage and backup.

[0011] The output control unit consists of a programmable logic controller (PLC) and a multi-channel relay output module, featuring 32 digital inputs and 24 digital outputs, as well as 16 analog inputs and 8 analog outputs. This unit receives control commands from the controller unit and controls the operating status of the field devices accordingly.

[0012] The output control unit supports manual / automatic mode switching. In automatic mode, it operates according to the instructions of the controller unit, while in manual mode, it can be manually controlled through the display interaction unit.

[0013] The communication transmission unit employs multiple communication technologies, including wired Ethernet, 4G / 5G wireless communication, LoRa low-power wide area network, and Wi-Fi. This unit is responsible for data transmission between the controller unit and the remote monitoring center and cloud platform, supporting multiple communication protocols such as TCP / IP, MQTT, and HTTP. The transmission rate of the communication transmission unit can reach 10Mbps, meeting the needs of real-time data transmission and remote control.

[0014] The display and interaction unit includes a 10.1-inch capacitive touchscreen (1280×800 resolution) on the field control box, a remote web access interface, and a mobile app. The field touchscreen features an industrial-grade waterproof and dustproof design (IP65 protection rating), allowing it to operate normally in ambient temperatures ranging from -20℃ to 70℃. The display and interaction unit shows various parameter information received from the controller unit through a graphical interface, including real-time water quality data, equipment operating status, and alarm information. Operators can set and adjust system parameters via the touchscreen, web interface, or mobile app, such as modifying control thresholds, switching equipment operating modes, and setting alarm conditions. The unit also provides data export functionality, supporting the generation and export of reports in various formats such as CSV, Excel, and PDF.

[0015] Furthermore, the entire device is installed in a waterproof and dustproof control cabinet. The control cabinet housing is equipped with a semiconductor air conditioner connected to the controller unit to monitor the temperature inside the housing in real time and control heat dissipation.

[0016] The beneficial effects of this utility model are as follows: By adopting the above technical solution, the distributed sewage treatment station monitoring and control device can realize remote monitoring and management of decentralized sewage treatment stations. The device collects water quality data in real time through the data acquisition unit, processes the data through the controller unit, and outputs the control unit to precisely control the sewage treatment equipment. At the same time, through the communication transmission unit and the display interaction unit, remote data transmission and multi-platform display are realized, enabling managers to keep abreast of the operating status of each station, promptly identify and solve problems, greatly improve management efficiency, and reduce operating costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the principle structure of an embodiment of this utility model.

[0018] 1- pH sensor, 2- dissolved oxygen sensor, 3- ammonia nitrogen online monitoring, 4- total nitrogen online monitoring, 5- COD online monitoring, 6- total phosphorus online monitoring, 7- suspended solids sensor, 8- temperature sensor. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings. A distributed wastewater treatment plant monitoring and control device based on A / O process includes a power supply unit, a data acquisition unit, a controller unit, an output control unit, a communication transmission unit, and a display and interaction unit. The controller unit is connected to the data acquisition unit, the output control unit, the communication transmission unit, and the display and interaction unit.

[0020] The power supply unit adopts a three-phase four-wire power supply system with a rated voltage of 380V / 220V and a frequency of 50Hz. It is equipped with a 30kVA isolation transformer to provide a stable power supply for the entire control unit and equipment at the wastewater treatment site. The power supply unit integrates protection components such as surge protectors, circuit breakers, contactors, and thermal relays, providing power support for aeration fans, return pumps, lift pumps, dosing equipment, blowers, submersible mixers, and various sensors in the A / O process system (composed of a sequentially connected equalization tank, anaerobic tank, anoxic tank, aerobic tank, sedimentation tank, and clear water tank). The power supply unit is also equipped with a 2kVA UPS uninterruptible power supply, which can provide at least 30 minutes of emergency power supply during mains power outages to ensure the normal operation of critical equipment and data acquisition systems.

[0021] The data acquisition unit consists of multiple analog and digital acquisition modules, employs a 24-bit high-precision A / D converter, and has a sampling frequency of up to 100Hz.

[0022] The data acquisition unit can simultaneously connect to multiple water quality sensors or online monitoring devices, including pH sensor 1, dissolved oxygen sensor 2, ammonia nitrogen online monitoring 3, total nitrogen online monitoring 4, COD online monitoring 5, total phosphorus online monitoring 6, suspended solids sensor 7, and temperature sensor 8. The data acquisition unit connects to each sensor via an RS485 bus or a 4-20mA current loop. After preliminary filtering and calibration, the acquired data is transmitted to the controller unit via the internal bus.

[0023] The controller unit uses an industrial-grade ARM processor. This unit receives raw data from the data acquisition unit, processes the data, and transmits it to the display and interaction unit for presentation. Simultaneously, it generates control commands based on preset control logic and sends them to the output control unit. The controller unit is also responsible for local data storage and backup.

[0024] The output control unit consists of a programmable logic controller (PLC) and a multi-channel relay output module, featuring 32 digital inputs and 24 digital outputs, as well as 16 analog inputs and 8 analog outputs. This unit receives control commands from the controller unit and controls the operating status of the field devices accordingly.

[0025] The output control unit supports manual / automatic mode switching. In automatic mode, it operates according to the instructions of the controller unit, while in manual mode, it can be manually controlled through the display interaction unit.

[0026] The communication transmission unit employs multiple communication technologies, including wired Ethernet, 4G / 5G wireless communication, LoRa low-power wide area network, and Wi-Fi. This unit is responsible for data transmission between the controller unit and the remote monitoring center and cloud platform, supporting multiple communication protocols such as TCP / IP, MQTT, and HTTP. The transmission rate of the communication transmission unit can reach 10Mbps, meeting the needs of real-time data transmission and remote control.

[0027] The display and interaction unit includes a 10.1-inch capacitive touchscreen (1280×800 resolution) on the field control box, a remote web access interface, and a mobile app. The field touchscreen features an industrial-grade waterproof and dustproof design (IP65 protection rating), allowing it to operate normally in ambient temperatures ranging from -20℃ to 70℃. The display and interaction unit shows various parameter information received from the controller unit through a graphical interface, including real-time water quality data, equipment operating status, and alarm information. Operators can set and adjust system parameters via the touchscreen, web interface, or mobile app, such as modifying control thresholds, switching equipment operating modes, and setting alarm conditions. The unit also provides data export functionality, supporting the generation and export of reports in various formats such as CSV, Excel, and PDF.

[0028] In practical applications, the workflow of this distributed wastewater treatment plant monitoring and control device is as follows: First, the data acquisition unit collects raw data from various water quality sensors and online monitoring equipment, including parameters such as pH value, dissolved oxygen, ammonia nitrogen, total nitrogen, COD, total phosphorus, suspended solids, and temperature. Then, this data is transmitted to the controller unit for filtering, calibration, and processing. The controller unit generates a control strategy and sends control commands to the output control unit. After receiving the commands, the output control unit controls the corresponding field electrical equipment (such as aeration blowers, return pumps, booster pumps, and dosing equipment) to perform actions. Simultaneously, the processed data is uploaded to a cloud platform or a remote monitoring center via the communication transmission unit and displayed visually on the interactive display unit. Operators can view the system's operating status through the interactive display unit and adjust parameters or manually intervene when necessary.

[0029] This monitoring and control device adopts a modular design, allowing for flexible configuration and expansion of each functional unit according to actual needs. The entire device is installed in a waterproof and dustproof control cabinet (IP54 protection rating), adapting to harsh outdoor environments. The control cabinet measures 800mm × 1600mm × 400mm and is made of 304 stainless steel. The cabinet housing is equipped with a semiconductor air conditioner connected to the controller unit, which includes a built-in temperature sensor connected to the controller to monitor the internal temperature in real time and control heat dissipation. The semiconductor air conditioner can be a Hangzhou DTAL-W200V24 model.

[0030] It should be noted that Embodiment 1 is a preferred implementation of a distributed wastewater treatment plant monitoring and control device based on the A / O process. The patent owner may make various modifications or alterations within the scope of the appended claims, as long as they do not exceed the protection scope described in the claims of this utility model, they shall be within the protection scope of this utility model.

Claims

1. A distributed wastewater treatment plant monitoring and control device based on A / O process, characterized in that: It includes a power supply unit, a data acquisition unit, a controller unit, an output control unit, a communication transmission unit, and a display and interaction unit. The controller unit is connected to the data acquisition unit, the output control unit, the communication transmission unit, and the display and interaction unit. The power supply unit is used to supply power to the entire controller unit and the electrical equipment and sensors at the A / O process wastewater treatment site. The data acquisition unit is used to collect water quality data detected by the water quality sensor and send it to the controller unit for processing. The controller unit sends the processing results to the display and interaction unit. The output control unit is used to output control commands to the field electrical equipment. The communication transmission unit is used to realize the data transmission of the controller unit. The display and interaction unit is used to display the data.

2. The distributed wastewater treatment plant monitoring and control device based on A / O process according to claim 1, characterized in that: The power supply unit adopts a three-phase four-wire power supply system with a rated voltage of 380V / 220V and a frequency of 50Hz, and is equipped with a 30kVA isolation transformer; the power supply unit is also equipped with a UPS uninterruptible power supply.

3. The distributed wastewater treatment plant monitoring and control device based on A / O process according to claim 1, characterized in that: The data acquisition unit consists of multiple analog and digital acquisition modules and uses a 24-bit high-precision A / D converter.

4. The distributed wastewater treatment plant monitoring and control device based on A / O process according to claim 3, characterized in that: The data acquisition unit can simultaneously connect to a pH sensor, dissolved oxygen sensor, online ammonia nitrogen monitoring, online total nitrogen monitoring, online COD monitoring, online total phosphorus monitoring, suspended solids sensor, and temperature sensor.

5. The distributed wastewater treatment plant monitoring and control device based on A / O process according to claim 1, characterized in that: The output control unit consists of a programmable logic controller and a multi-channel relay output module, and has 32 digital inputs and 24 digital outputs, as well as 16 analog inputs and 8 analog outputs.

6. The distributed wastewater treatment plant monitoring and control device based on A / O process according to claim 1, characterized in that: The communication transmission unit enables data transmission between the controller unit and the remote monitoring center and cloud platform, and supports TCP / IP, MQTT and HTTP communication protocols.

7. The distributed wastewater treatment plant monitoring and control device based on A / O process according to claim 1, characterized in that: The display and interaction unit includes a capacitive touchscreen on the field control box, which features an industrial-grade waterproof and dustproof design.

8. The distributed wastewater treatment plant monitoring and control device based on A / O process according to claim 1, characterized in that: The entire device is installed in a waterproof and dustproof control cabinet, and the control cabinet housing is equipped with a semiconductor air conditioner connected to the controller unit.

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