Automatic control device for standard reaching of ammonia nitrogen stripping

Abstract

The utility model relates to the technical field of industrial wastewater treatment, in particular to an ammonia nitrogen stripping standard reaching automatic control device. Comprising a tower body, an air outlet pipe, a backwashing spray head, a filler layer, a water inlet pipe, a conical guide seat, a water outlet pipe, an air inlet pipe, a one-way valve, a transmission mechanism, two screw rods, a moving ring and a plurality of pH sensors, electric control valves are arranged on the air outlet pipe, the backwashing spray head, the water inlet pipe and the water outlet pipe, and automatic control over all pipelines can be achieved through the multiple electric control valves; the one-way valve guarantees one-way flow of gas, the two screws are arranged through the transmission mechanism, the movable ring is arranged between the two screws in a threaded mode, and then through the transmission mechanism and the multiple pH sensors, the pH values of different positions in the tower can be accurately monitored in real time, vertical movement of the movable ring is achieved, and therefore the monitoring position can be automatically adjusted according to parameters such as the monitored pH values. Accurate and automatic monitoring, regulation and control of the ammonia nitrogen stripping process are achieved, and the defects of a traditional control system are overcome.

Description

Technical Field

[0001] This utility model relates to the field of industrial wastewater treatment technology, and in particular to an automated control device for ammonia nitrogen stripping to achieve standards. Background Technology

[0002] Ammonia nitrogen stripping towers are important equipment for treating wastewater with high ammonia nitrogen content. Their working principle is based on gas stripping. The equipment introduces air or steam into the wastewater as a carrier and uses a gas-liquid contact device to increase the gas-liquid contact area, so that ammonia nitrogen in the wastewater is transferred from the liquid phase to the gas phase, thereby achieving the removal of ammonia nitrogen from the wastewater.

[0003] The existing technology, CN206544920U, describes a high-efficiency ammonia nitrogen stripping reaction tower, which includes an input device, a fixed packing device, a fluidized packing device, a detection device, and an output device. It mainly employs a combination of traditional packing stripping and fluidized packing stripping for combined ammonia removal. Through this dual ammonia removal process, the ammonia removal efficiency can reach 85%–98%. This existing technology has a simple structure, is easy to operate, and can reduce the cost of nitrogen-containing wastewater treatment.

[0004] However, traditional ammonia stripping tower control systems often rely on manual operation and experience-based judgment, lacking precise automated monitoring and control capabilities. Utility Model Content

[0005] The purpose of this utility model is to provide an automated control device for ammonia nitrogen stripping to meet standards, which aims to solve the technical problem that the traditional ammonia nitrogen stripping tower control system in the prior art often relies on manual operation and experience judgment, and lacks accurate automated monitoring and control capabilities.

[0006] To achieve the above objectives, this utility model employs an automated control device for ammonia nitrogen stripping to meet standards, comprising a tower body, an air outlet pipe at the top of the tower body, a backwash nozzle at the inner top of the tower body, a packing layer and a water inlet pipe in the middle of the tower body, with the water inlet pipe located above the packing layer, a conical guide seat at the bottom of the tower body, an air outlet pipe below the conical guide seat, an air inlet pipe on the outer side of the tower body, located between the packing layer and the conical guide seat, and electrically controlled valves installed on the air outlet pipe, the backwash nozzle, the water inlet pipe, and the water outlet pipe; a one-way valve is installed on the air inlet pipe; two screws are installed inside the tower body via a transmission mechanism, with a moving ring threaded between the two screws, and the moving ring located between the packing layer and the conical guide seat; multiple pH sensors are installed on the inner side of the moving ring.

[0007] The tower body has multiple limiting rods on its inner side, and the moving ring has multiple limiting grooves on its inner side, with each of the limiting rods extending into its corresponding limiting groove.

[0008] The plurality of pH sensors and the plurality of limiting grooves are arranged in a ring shape on the inner side of the moving ring.

[0009] The transmission mechanism includes two rotating rods, a driving gear, and a V-shaped box. One end of each rotating rod has a driven gear, and the other end of both the rotating rod and the screw has a synchronous pulley. The two synchronous pulleys between the rotating rod and the screw are driven by a synchronous belt. The two rotating rods are rotatably connected to the V-shaped box and located in the middle of the V-shaped box. The driven gear is located inside the V-shaped box. The driving gear is rotatably connected to the V-shaped box and located inside the V-shaped box. The driving gear is driven by a motor and also meshes with a corresponding driven gear, located between the two driven gears. The V-shaped box is fixedly connected to the tower body and located below the tower body.

[0010] The timing pulley of the screw is located at one end of the V-shaped box, and the timing belt is located inside the V-shaped box.

[0011] This utility model discloses an automated control device for ammonia nitrogen stripping to achieve standard compliance. It includes a tower body, an air outlet pipe at the top of the tower body, a backwash nozzle at the inner top of the tower body, a packing layer and a water inlet pipe in the middle of the tower body (the water inlet pipe is located above the packing layer), a conical guide seat at the bottom of the tower body, an air outlet pipe below the conical guide seat, and an air inlet pipe on the outer side of the tower body, located between the packing layer and the conical guide seat. Electrically controlled valves are installed on the air outlet pipe, the backwash nozzle, the water inlet pipe, and the water outlet pipe. A one-way valve is installed on the air inlet pipe. Two screws are installed inside the tower body via a transmission mechanism, and a moving ring is threaded between the two screws. Multiple pH sensors are installed on the inner side of the moving ring. The electrically controlled valve controls the opening and closing of different pipelines, enabling automated control of each pipeline. A one-way valve is installed on the inlet pipe to ensure unidirectional gas flow. Simultaneously, two screws are installed within the tower body via a transmission mechanism, with a moving ring threaded between them. Multiple pH sensors are installed inside the moving ring. Through the transmission mechanism, the pH value at different locations within the tower can be monitored accurately in real time, allowing the moving ring to move up and down. This enables automatic adjustment of the monitoring position based on the monitored pH value and other parameters, achieving precise automated monitoring and control of the ammonia nitrogen stripping process. This overcomes the shortcomings of traditional control systems and effectively solves the technical problem that traditional ammonia nitrogen stripping tower control systems often rely on manual operation and experience-based judgment, lacking precise automated monitoring and control capabilities. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a three-dimensional perspective view of the automated control device for ammonia nitrogen stripping to meet standards according to this utility model.

[0014] Figure 2 This is the front view of the automated control device for ammonia nitrogen stripping to meet standards according to this utility model.

[0015] Figure 3 This is the utility model Figure 2 A cross-sectional view along line AA in the middle.

[0016] Figure 4 This is the utility model Figure 3 A magnified view of the area at point BB.

[0017] Figure 5 This is a schematic diagram of the moving ring and transmission mechanism in the automated control device for ammonia nitrogen stripping compliance of this utility model.

[0018] 1-Tower body, 2-Outlet pipe, 3-Backwash nozzle, 4-Packing layer, 5-Inlet pipe, 6-Conical guide seat, 7-Outlet pipe, 8-Inlet pipe, 9-Electrically controlled valve, 10-Check valve, 11-Screw, 12-Moving ring, 13-pH sensor, 14-Limit rod, 15-Limit groove, 16-Rotating rod, 17-Driving gear, 18-V-shaped box, 19-Driven gear, 20-Synchronous pulley, 21-Synchronous belt. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0020] Please see Figures 1 to 5This utility model provides an automated control device for ammonia nitrogen stripping to achieve standard compliance, including a tower body 1, an air outlet pipe 2 at the top of the tower body 1, a backwash nozzle 3 at the inner top of the tower body 1, a packing layer 4 and a water inlet pipe 5 in the middle of the tower body 1, with the water inlet pipe 5 located above the packing layer 4, a conical guide seat 6 at the bottom of the tower body 1, a water outlet pipe 7 below the conical guide seat 6, and an air inlet pipe 8 on the outer side of the tower body 1. Between the packing layer 4 and the conical guide seat 6, and on the air outlet pipe 2, backwash nozzle 3, water inlet pipe 5 and water outlet pipe 7, there are electrically controlled valves 9. One-way valves 10 are installed on the air inlet pipe 8. Two screws 11 are installed in the tower body 1 through a transmission mechanism. A moving ring 12 is threaded between the two screws 11. The moving ring 12 is located between the packing layer 4 and the conical guide seat 6. Multiple pH sensors 13 are installed on the inner side of the moving ring 12.

[0021] In this embodiment, by installing electrically controlled valves 9 on the air outlet pipe 2, the backwash nozzle 3, the water inlet pipe 5, and the water outlet pipe 7, precise control of gas emission, backwashing, and wastewater inlet / outlet processes can be achieved, improving the automation level of the device and facilitating the adjustment of operating parameters according to different working conditions. A one-way valve 10 is installed on the air inlet pipe 8 to prevent treated gas or wastewater from flowing back into the air inlet pipe 8, ensuring the stability and reliability of the air intake process. Furthermore, two screws 11 are installed through the transmission mechanism, with a moving ring 12 threaded between the two screws 11. This structure allows the moving ring 12 to move up and down under the drive of the screws 11, thereby adjusting the detection position of the pH sensor according to the water quality at different heights. Multiple pH sensors can monitor the pH value at different heights within the tower body 1 in real time, providing data support for precise control of the ammonia nitrogen stripping process, helping to adjust operating parameters in a timely manner, and ensuring that ammonia nitrogen stripping meets standards.

[0022] Furthermore, the inner side of the tower body 1 is provided with a plurality of limiting rods 14, and the inner side of the moving ring 12 is also provided with a plurality of limiting grooves 15, and the plurality of limiting rods 14 extend into the corresponding limiting grooves 15 respectively.

[0023] In this embodiment, this structure restricts the movement direction of the moving ring 12, allowing it to move only up and down along the limiting rod 14. This effectively prevents the moving ring 12 from shaking or shifting during movement, ensuring the accuracy and stability of the pH sensor's detection position and improving the reliability of the detection data.

[0024] Furthermore, the plurality of pH sensors 13 and the plurality of limiting grooves 15 are arranged in a ring shape on the inner side of the moving ring 12.

[0025] Furthermore, the transmission mechanism includes two rotating rods 16, a driving gear 17, and a V-shaped box 18. One end of the rotating rod 16 is provided with a driven gear 19, and the other end of the rotating rod 16 and one end of the screw 11 are both provided with synchronous pulleys 20. The two synchronous pulleys 20 between the rotating rod 16 and the screw 11 are driven by a synchronous belt 21. The two rotating rods 16 are rotatably connected to the V-shaped box 18 and are located in the middle of the V-shaped box 18. The driven gear 19 is located inside the V-shaped box 18. The driving gear 17 is rotatably connected to the V-shaped box 18 and is located inside the V-shaped box 18. The driving gear 17 is driven by a motor. The driving gear 17 also meshes with the corresponding driven gear 19 and is located between the two driven gears 19. The V-shaped box 18 is fixedly connected to the tower body 1 and is located below the tower body 1.

[0026] In this embodiment, through the motor drive, the driving gear 17 simultaneously drives the two driven gears 19. This power transmission method can ensure that the power of the motor is reliably transmitted to the rotating rod 16 and the screw 11, thereby driving the moving ring 12 to move up and down, and realizing the precise adjustment of the detection position of the pH sensor.

[0027] Furthermore, the timing pulley 20 of the screw 11 is located at one end of the V-shaped box 18, and the timing belt 21 is located inside the V-shaped box 18.

[0028] In this invention, during operation, wastewater enters the tower body 1 through the inlet pipe 5, and air is introduced through the air inlet pipe 8. The wastewater and air come into full contact in the packing layer 4, causing ammonia nitrogen to be blown out of the wastewater and discharged through the outlet pipe 2 with the air. During this process, the motor drives the drive gear 17 to rotate. The drive gear 17 meshes with two driven gears 19, driving two rotating rods 16 to rotate. The synchronous pulley 20 on the rotating rod 16 transmits power to the screw 11 via the synchronous belt 21, causing the two screws 11 to rotate synchronously. The moving ring 12 on the screw 11 moves up and down due to the thread action. Multiple pH sensors are located inside the moving ring 12. The 13 components are arranged in a ring shape. During the up-and-down movement of the moving ring 12, the pH value of the wastewater at different heights can be monitored in real time. Based on the data monitored by the pH sensor 13, the electrically controlled valves 9 on the air outlet pipe 2, the backwash nozzle 3, the water inlet pipe 5, and the water outlet pipe 7 can be precisely controlled to adjust the flow rate and on / off status of each pipeline, thereby achieving precise and automated control of the ammonia nitrogen stripping process and ensuring that the ammonia nitrogen stripping meets the standards. When the pH value is abnormal, the electrically controlled valves 9 on the water inlet pipe 5, the water outlet pipe 7, and the air outlet pipe 2 are closed, while the air inlet pipe 8 continues to supply air for stripping and the backwash nozzle 3 continues to backwash until the pH value inside the tower body 1 reaches the normal range.

[0029] In this utility model, the design requires the use of existing control programs, specifically involving a data acquisition program, a logic judgment program, a control command generation program, and a valve control program. These programs are all mature existing technologies, so their working principles will not be elaborated here. The data acquisition program is responsible for collecting wastewater pH data monitored by multiple pH sensors 13 in real time. The data acquisition program accurately transmits this data to the logic judgment program. Based on the collected pH data, the logic judgment program compares and analyzes it with a preset acceptable pH range. If the preset acceptable pH range is 6-9, and the collected pH value exceeds this range... When the pH value is within the specified range, the program will determine that the current ammonia nitrogen stripping process is abnormal. When the logic judgment program finds that the pH value is abnormal, the control instruction generation program will generate corresponding control instructions according to the specific situation. If the pH value is too low, the air intake of the air inlet pipe 8 needs to be increased to improve the stripping effect; if the pH value is too high, the water intake of the water inlet pipe 5 needs to be adjusted. The valve control program will receive the instructions issued by the control instruction generation program and convert them into actual control signals for the electrically controlled valves 9. By controlling the opening and closing status and flow rate of the electrically controlled valves 9 on the air outlet pipe 2, the backwash nozzle 3, the water inlet pipe 5, and the water outlet pipe 7, the precise control of the ammonia nitrogen stripping process can be achieved.

[0030] In this invention, when the intake air volume needs to be increased, the valve control program will open the electrically controlled valve 9 on the intake pipe 8 and adjust its opening degree; when backwashing is required, the electrically controlled valve 9 at the backwash nozzle 3 will be opened to allow backwash water to enter the tower body 1 for cleaning. Each of the electrically controlled valves 9 works in coordination according to the program instructions to ensure that the ammonia nitrogen stripping process can operate stably under different working conditions; while the one-way valve 10 is installed on the intake pipe 8, its function is to ensure that the gas can only flow into the tower body 1 in one direction and prevent gas backflow. In the automated control process, the valve control program does not need to directly control the one-way valve 10. When adjusting the intake air volume, the valve control program will reasonably control the opening degree of the electrically controlled valve 9 on the intake pipe 8 according to the one-way flow characteristics of the one-way valve 10 to ensure that the gas can smoothly enter the tower body 1, while avoiding the stripping effect due to gas backflow.

[0031] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. An automated control device for ammonia nitrogen stripping to achieve standard compliance, characterized in that, The system includes a tower body, an air outlet pipe at the top of the tower body, a backwash nozzle at the top inner part of the tower body, a packing layer and a water inlet pipe in the middle of the tower body, with the water inlet pipe located above the packing layer, a conical guide seat at the bottom of the tower body, a water outlet pipe below the conical guide seat, an air inlet pipe on the outer side of the tower body, located between the packing layer and the conical guide seat, and electrically controlled valves on the air outlet pipe, backwash nozzle, water inlet pipe, and water outlet pipe. A one-way valve is installed on the air inlet pipe. Two screws are installed inside the tower body via a transmission mechanism, with a moving ring threaded between the two screws, located between the packing layer and the conical guide seat. Multiple pH sensors are installed on the inner side of the moving ring.

2. The automated control device for ammonia nitrogen stripping to meet standards as described in claim 1, characterized in that, The inner side of the tower body is provided with multiple limiting rods, and the inner side of the moving ring is also provided with multiple limiting grooves, and the multiple limiting rods extend into the corresponding limiting grooves respectively.

3. The automated control device for ammonia nitrogen stripping to meet standards as described in claim 2, characterized in that, Multiple pH sensors and multiple limiting grooves are arranged in a ring shape on the inner side of the movable ring.

4. The automated control device for ammonia nitrogen stripping to meet standards as described in claim 3, characterized in that, The transmission mechanism includes two rotating rods, a driving gear, and a V-shaped box. One end of each rotating rod is equipped with a driven gear, and the other end of the rotating rod and one end of the screw are both equipped with synchronous pulleys. The two synchronous pulleys between the rotating rod and the screw are driven by a synchronous belt. The two rotating rods are rotatably connected to the V-shaped box and are located in the middle of the V-shaped box. The driven gear is located inside the V-shaped box. The driving gear is rotatably connected to the V-shaped box and is located inside the V-shaped box. The driving gear is driven by a motor and also meshes with a corresponding driven gear, located between the two driven gears. The V-shaped box is fixedly connected to the tower body and is located below the tower body.

5. The automated control device for ammonia nitrogen stripping to meet standards as described in claim 4, characterized in that, The timing pulley of the screw is located at one end of the V-shaped box, and the timing belt is located inside the V-shaped box.

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