Intelligent dosing module for sewage treatment system

Abstract

The utility model relates to an intelligent dosing module for a sewage treatment system, which comprises a sewage treatment system and an intelligent dosing module, and the sewage treatment system comprises an anoxic tank, an aerobic tank and an MBR (membrane bioreactor) tank which are connected in sequence; the intelligent dosing module comprises a medicament storage unit, a water quality and quantity monitoring unit, a PLC (Programmable Logic Controller) and a dosing execution unit. The PLC is adopted in the control unit, an intelligent algorithm based on logic control is preset in the control unit, the water quality and water quantity monitoring unit collects water quantity and water quality parameters such as COD, ammonia nitrogen, total nitrogen and total phosphorus in real time and transmits the water quality parameters to the PLC, the PLC calculates the dosage of a carbon source and a dephosphorization agent according to the preset algorithm and process requirements, an instruction is issued to the agent adding execution unit, and the agent adding execution unit is controlled to execute the dephosphorization process according to the instruction. The dosing execution unit is used for precisely dosing by means of a metering pump and an electric control valve, real-time adjustment is carried out through data fed back by a pressure sensor and a flow meter, and the PLC is further connected with a remote monitoring center, so that the remote monitoring function is realized, the high efficiency and the accuracy of sewage treatment are guaranteed, and the effluent quality reaches the standard.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, specifically relating to an intelligent dosing module for wastewater treatment systems. Background Technology

[0002] In the field of wastewater treatment, the AO+MBR system, which combines AO (anaerobic-aerobic) process with MBR (membrane bioreactor) technology, has been widely adopted. This combination not only effectively removes pollutants such as organic matter, nitrogen, and phosphorus from wastewater but also achieves high wastewater treatment standards. To ensure the normal functioning of microbial metabolic activities and guarantee the high efficiency of nitrogen and phosphorus removal processes, it is usually necessary to add appropriate amounts of carbon sources and phosphorus removal chemicals to the system.

[0003] However, in traditional operations, neither manual dosing nor automated dosing methods based on fixed time intervals and preset dosages can meet the needs of modern wastewater treatment. The former suffers from low precision, high labor intensity, and slow response; the latter lacks flexibility, cannot respond promptly to changes in water quality and quantity, and is prone to improper use of chemicals, either too much or too little, thus affecting treatment effectiveness and cost control.

[0004] With the increasing trend towards intelligent and refined water treatment, and the ever-improving requirements for effluent quality, the development of intelligent dosing modules has become crucial. This advanced solution can monitor and adapt to changes in system status in real time, automatically adjusting the required amount of chemicals based on actual water quality and quantity. It enables precise chemical dosing, avoiding waste and overdosing, thereby improving treatment efficiency and ensuring that effluent meets standards. Utility Model Content

[0005] The purpose of this utility model is to solve the above-mentioned problems. This application proposes an intelligent dosing module for a sewage treatment system, which is equipped with a PLC and connected sensors, valves, etc. It can monitor the sewage volume and water quality parameters in real time, and automatically and accurately control the amount of carbon source and phosphorus removal agent added according to their changes, thereby improving the sewage treatment effect and reducing agent consumption and treatment costs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an intelligent dosing module for a sewage treatment system, comprising a sewage treatment system and an intelligent dosing module. The sewage treatment system includes an anoxic tank, an aerobic tank, and an MBR tank connected in sequence. The anoxic tank is equipped with an aeration and stirring system, the aerobic tank is equipped with an aeration system, and the MBR tank is equipped with an MBR membrane module. The anoxic tank is connected to a biological treatment tank inlet pipe. A biological treatment tank inlet flow meter installed on the biological treatment tank inlet pipe is connected to a PLC through a signal transmission line. The intelligent dosing module includes a reagent storage unit, a water quality and quantity monitoring unit, a PLC, and a dosing execution unit.

[0007] The reagent storage unit includes a carbon source storage tank and a phosphorus removal reagent storage tank. Both the carbon source storage tank and the phosphorus removal reagent storage tank are equipped with a stirring and mixing device. Both the carbon source storage tank and the phosphorus removal reagent storage tank are equipped with a liquid level sensor and connected to a PLC. The water quality and quantity monitoring unit includes an influent water quality online monitoring system and an effluent water quality online monitoring system connected to a PLC. The dosing execution unit includes a metering pump, a dosing pipe, a dosing pipe flow meter, a dosing pipe electric regulating valve, a dosing pipe damper, a dosing pipe back pressure valve, a dosing pipe pressure relief valve, a dosing pipe ball valve, and a pressure sensor.

[0008] Furthermore: one end of the dosing pipe is installed in the anoxic tank, and the other end is divided into two paths and installed in the carbon source storage tank and the phosphorus removal agent storage tank respectively. The dosing pipes located in the intelligent dosing module near the carbon source storage tank and the phosphorus removal agent storage tank are equipped with a dosing pipe flow meter, a dosing pipe electric regulating valve, a dosing pipe damper, a dosing pipe back pressure valve, a dosing pipe pressure relief valve, a dosing pipe ball valve, and a pressure sensor, all of which are connected to the PLC via signal transmission lines.

[0009] Furthermore: the carbon source storage tank and the phosphorus removal agent storage tank are connected to tap water via a tap water pipe, and the tap water pipe is equipped with an electric regulating valve for the tap water pipe that is connected to the PLC via a signal transmission line.

[0010] Furthermore, a Y-type filter is installed on the dosing pipe near the outlet of the carbon source storage tank and the phosphorus removal agent storage tank.

[0011] Furthermore, the PLC is pre-programmed with an intelligent algorithm based on logic control.

[0012] Furthermore, the PLC is connected to a remote monitoring center via wireless communication.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] The control unit of this utility model adopts a PLC and has a pre-set intelligent algorithm based on logic control. The water quality and quantity monitoring unit collects water quantity and water quality parameters such as COD, ammonia nitrogen, total nitrogen, and total phosphorus in real time and transmits them to the PLC. The PLC calculates the amount of carbon source and phosphorus removal agent according to the pre-set algorithm and process requirements, and issues instructions to the dosing execution unit. The dosing execution unit accurately adds chemicals with the help of metering pumps and electric regulating valves, and makes real-time adjustments based on the data fed back by pressure sensors and flow meters.

[0015] Both the carbon source storage tank and the phosphorus removal agent storage tank are equipped with level sensors to monitor the agent's quantity and trigger an alarm when the level is low. The stirring and mixing device installed in the storage tank ensures that the agent is evenly dispersed, enhancing the reaction effect between the agent and the wastewater.

[0016] The PLC also connects to the remote monitoring center via wireless communication to enable remote monitoring, operation, and management, ensuring the efficiency, accuracy, and compliance of wastewater treatment with effluent quality standards. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only for more clearly illustrating the technical solutions in the embodiments of this utility model or the prior art. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] In the diagram: 1-Anoxic tank, 2-Aerobic tank, 3-MBR membrane tank, 4-Mixing device, 5-Chemical storage unit, 6-Level sensor, 7-Inlet flow meter for biological treatment tank, 8-Flow meter for dosing pipe, 9-Electric regulating valve for dosing pipe, 10-Damping pipe damper, 11-Back pressure valve for dosing pipe, 12-Pressure relief valve for dosing pipe, 13-Ball valve for dosing pipe, 14-Inlet pipe for biological treatment tank, 15-Dosing pipe, 16-Signal transmission line, 17-Electric regulating valve for tap water pipe, 18-PLC, 19-Online effluent water quality monitoring system, 20-Inlet water quality monitoring system, 21-Aeration and mixing system, 22-Aeration system, 23-MBR membrane module, 24-Pressure sensor, 25-Y-type filter, 26-Metering pump. Detailed Implementation

[0020] To enable those skilled in the art to better understand and implement the technical solution of this utility model, the present utility model will be further described below with reference to specific embodiments. However, the embodiments described are only for illustration and are not intended to limit the present utility model.

[0021] like Figure 1 The intelligent dosing module for a wastewater treatment system shown includes a wastewater treatment system and an intelligent dosing module. The wastewater treatment system includes an anoxic tank 1, an aerobic tank 2, and an MBR tank 3 connected in sequence. The anoxic tank 1 is equipped with an aeration and stirring system 21, the aerobic tank 2 is equipped with an aeration system 22, and the MBR tank 3 is equipped with an MBR membrane module 23. The anoxic tank 1 is connected to a biological treatment tank inlet pipe 14. A biological treatment tank inlet flow meter 7 installed on the biological treatment tank inlet pipe 14 is connected to a PLC 18 through a signal transmission line 16.

[0022] The intelligent dosing module includes a reagent storage unit 5, a water quality and quantity monitoring unit, a PLC 18, and a dosing execution unit. The reagent storage unit 5 includes a carbon source storage tank and a phosphorus removal reagent storage tank. Both the carbon source storage tank and the phosphorus removal reagent storage tank are equipped with a stirring and mixing device 4. Both the carbon source storage tank and the phosphorus removal reagent storage tank are equipped with a level sensor 6 connected to the PLC. The water quality and quantity monitoring unit includes an influent water quality online monitoring system 20 and an effluent water quality online monitoring system 19 connected to the PLC 18. The dosing execution unit includes a metering pump 26 and a dosing pipe 15. One end of the dosing pipe 15 is installed in the anoxic tank 15, and the other end is divided into two lines and installed in the carbon source storage tank and the phosphorus removal agent storage tank respectively. The dosing pipe 15 located in the intelligent dosing module near the carbon source storage tank and the phosphorus removal agent storage tank is equipped with a dosing pipe flow meter 8, a dosing pipe electric regulating valve 9, a dosing pipe damper 10, a dosing pipe back pressure valve 11, a dosing pipe pressure relief valve 12, a dosing pipe ball valve 13, and a pressure sensor 24, which are connected to the PLC 18 via the signal transmission line 16. A Y-type filter 25 is also installed on the dosing pipe 15 near the outlet of the carbon source storage tank and the phosphorus removal agent storage tank.

[0023] The carbon source storage tank and the phosphorus removal agent storage tank are connected to tap water via a tap water pipe. The tap water pipe is equipped with an electric regulating valve 17 connected to the PLC 18 via a signal transmission line 16.

[0024] The PLC18 is pre-programmed with a logic-based intelligent algorithm. This algorithm can dynamically adjust the dosage of carbon source and phosphorus removal agent by comprehensively considering factors such as influent water quality, water quantity, metabolic state of microorganisms in the biological reactor, effluent water quality requirements, and historical system operation data. For example, when the influent COD content is low but the ammonia nitrogen content is high, the algorithm determines that the carbon source in the system is insufficient and the dosage of carbon source needs to be increased to promote denitrification. When the total phosphorus content in the biological reactor exceeds a set threshold, the algorithm automatically increases the dosage of phosphorus removal agent.

[0025] The PLC18 connects to a remote monitoring center via wireless communication, allowing staff to view the intelligent dosing module's operating status, water quality monitoring data, and dosing records in real time. Simultaneously, the remote monitoring center can send control commands to the PLC18 to remotely operate and adjust parameters of the intelligent dosing module, achieving intelligent remote management.

[0026] Working principle

[0027] The system uses an influent flow meter for the biological treatment tank, an online effluent water quality monitoring system, and an influent water quality monitoring system to monitor the influent flow rate and water quality parameters (COD, ammonia nitrogen, total nitrogen, total phosphorus, etc.) of the influent and effluent entering the "AO+MBR wastewater treatment system" in real time. The data is transmitted to the PLC, which receives the data and analyzes the data information through internal preset algorithms. Based on logic control and historical data, the PLC dynamically adjusts the demand for carbon source and phosphorus removal agent to meet the specific requirements of the wastewater treatment process.

[0028] After calculating the required dosage, the PLC sends a clear control command to the dosing unit. The metering pump, based on the received command, controls the flow rate via frequency conversion and simultaneously adjusts the electric regulating valve on the dosing pipe to precisely extract and deliver the appropriate amount of carbon source or phosphorus removal agent from the storage unit: the carbon source storage tank or the phosphorus removal agent storage tank. This is then transported to the designated location in the wastewater treatment system via the dosing pipe. During the dosing process, the flow meter and pressure sensor on the dosing pipe monitor the dosing flow rate and pressure within the dosing pipeline in real time, feeding the data back to the PLC. The PLC monitors and adjusts the dosing process in real time based on the feedback data to ensure accuracy and stability. Simultaneously, a level sensor monitors the agent level in the carbon source storage tank or phosphorus removal agent storage tank. When the level falls below the set lower limit, the PLC issues an alarm, reminding staff to replenish the agent, and simultaneously opens the electric regulating valve on the water supply pipe to add tap water.

[0029] Because the PLC is connected to the remote monitoring center via wireless communication, staff can also view the real-time operating status of the intelligent dosing module, water quality monitoring data, and dosing records through the remote monitoring center. If parameter adjustments or remote operation of the dosing module are required, control commands can be sent to the PLC through the remote monitoring center.

[0030] All content not described in detail in this utility model is prior art.

[0031] It should be noted that the above descriptions are all part of the structure of this utility model. Without departing from the technical principles of this application, those skilled in the art can combine the technical solutions in the above embodiments, or make equivalent changes or substitutions to the relevant technical features. Any changes or equivalent substitutions made within the technical concept and / or technical principles of this application will fall within the protection scope of this application.

Claims

1. An intelligent dosing module for a wastewater treatment system, comprising a wastewater treatment system and an intelligent dosing module, wherein the wastewater treatment system comprises an anoxic tank (1), an aerobic tank (2), and an MBR tank (3) connected in sequence, wherein the anoxic tank (1) is provided with an aeration and stirring system (21), the aerobic tank (2) is provided with an aeration system (22), the MBR tank (3) is provided with an MBR membrane module (23), the anoxic tank (1) is connected to a biological treatment tank inlet pipe (14), and a biological treatment tank inlet flow meter (7) provided on the biological treatment tank inlet pipe (14) is connected to a PLC (18) through a signal transmission line (16), characterized in that: The intelligent dosing module includes a reagent storage unit (5), a water quality and quantity monitoring unit, a PLC (18), and a dosing execution unit; The reagent storage unit (5) includes a carbon source storage tank and a phosphorus removal reagent storage tank. Both the carbon source storage tank and the phosphorus removal reagent storage tank are equipped with a stirring and mixing device (4). Both the carbon source storage tank and the phosphorus removal reagent storage tank are equipped with a liquid level sensor (6) and connected to a PLC. The water quality and quantity monitoring unit includes an influent water quality online monitoring system (20) and an effluent water quality online monitoring system (19) connected to a PLC (18). The dosing execution unit includes a metering pump (26), a dosing pipe (15), a dosing pipe flow meter (8), a dosing pipe electric regulating valve (9), a dosing pipe damper (10), a dosing pipe back pressure valve (11), a dosing pipe pressure relief valve (12), a dosing pipe ball valve (13), and a pressure sensor (24).

2. The intelligent dosing module for a wastewater treatment system according to claim 1, characterized in that: One end of the dosing pipe (15) is installed in the anoxic pool (1), and the other end is divided into two paths and installed in the carbon source storage tank and the phosphorus removal agent storage tank respectively. The dosing pipe (15) located in the intelligent dosing module near the carbon source storage tank and the phosphorus removal agent storage tank is equipped with a dosing pipe flow meter (8), a dosing pipe electric regulating valve (9), a dosing pipe damper (10), a dosing pipe back pressure valve (11), a dosing pipe pressure relief valve (12), a dosing pipe ball valve (13), and a pressure sensor (24).

3. The intelligent dosing module for a wastewater treatment system according to claim 1, characterized in that: The carbon source storage tank and the phosphorus removal agent storage tank are connected to tap water via a tap water pipe. The tap water pipe is equipped with an electric regulating valve (17) connected to the PLC (18) via a signal transmission line (16).

4. The intelligent dosing module for a wastewater treatment system according to claim 1, characterized in that: A Y-type filter (25) is installed on the dosing pipe (15) near the outlet of the carbon source storage tank and the phosphorus removal agent storage tank.

5. The intelligent dosing module for a wastewater treatment system according to claim 1, characterized in that: The PLC (18) is pre-programmed with an intelligent algorithm based on logic control.

6. The intelligent dosing module for a wastewater treatment system according to claim 1, characterized in that: The PLC (18) is connected to the remote monitoring center via wireless communication.

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