A smart device for regulating dissolved oxygen in a biological treatment tank

Abstract

This utility model discloses an intelligent dissolved oxygen regulation device for a biological treatment tank, relating to the field of wastewater treatment technology. Specifically, it includes a water tank, within which an aeration disc and a dissolved oxygen analyzer are fixedly installed. A blower is located outside the water tank, and a frequency converter and controller are located outside the blower. An air supply pipe is fixedly installed at the output end of the blower, and a four-way fitting is fixedly connected to one end of the air supply pipe. An air plate is fixedly installed inside the aeration disc, and several sealing blocks are installed inside the air plate. Several fixing brackets are fixedly installed at the bottom of the air plate. This utility model uses a preset standard dissolved oxygen value and a dissolved oxygen analyzer to monitor the dissolved oxygen content in the wastewater. When the measured value at a certain time does not meet the preset standard value, the controller increases or decreases the blower's airflow and the frequency converter's speed, thereby adjusting the dissolved oxygen value in the water tank in a timely manner, facilitating stable wastewater treatment.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to an intelligent dissolved oxygen regulation device for a biochemical tank. Background Technology

[0002] In the biochemical treatment process of domestic sewage treatment systems, aerobic treatment is required to remove organic matter from the water. Currently, according to process requirements, the dissolved oxygen in the aerobic tank should be controlled within the range of 2-4 mg / L during sewage treatment. When adjusting the dissolved oxygen concentration in the aeration tank, the dissolved oxygen concentration in the aeration tank is first detected manually, and then the opening of the valve at the outlet of the Roots blower is adjusted to adjust the dissolved oxygen concentration to make it close to the process requirements.

[0003] However, manual measurement and adjustment has the disadvantages of untimely adjustment of dissolved oxygen concentration and large fluctuations in dissolved oxygen concentration in the pool, which makes it impossible to perform water treatment work stably. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides an intelligent dissolved oxygen regulating device for biological treatment ponds, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: it includes a water tank, in which an aeration disc and a dissolved oxygen analyzer are fixedly installed; a blower is installed on the outside of the water tank; a frequency converter and a controller are installed on the outside of the blower; an air supply pipe is fixedly installed at the output end of the blower; and a four-way pipe fitting is fixedly connected to one end of the air supply pipe.

[0008] An air plate is fixedly installed inside the aeration disc, and several sealing blocks are set inside the air plate. Several fixing brackets are fixedly installed at the bottom of the air plate, and pull ropes are fixedly connected to the bottom of each of the sealing blocks. A connecting pipe is fixedly installed at the bottom of the aeration disc.

[0009] Optionally, the aeration disc has three connection ports, the same number as the top connection ports of the four-way pipe fitting, and both the aeration disc and the four-way pipe fitting are located inside the water tank.

[0010] Optionally, the inner diameter of the four-way fitting connection port is equal to the outer diameter of the connecting pipe at the bottom of the aeration disc, and the aeration disc is connected to the air supply pipe through the connecting pipe and the four-way fitting.

[0011] Optionally, the blocking blocks are divided into three types according to their size: small blocking blocks, medium blocking blocks, and large blocking blocks. Similarly, the fixing frame is also divided into three types according to the size of the blocking blocks: large, medium, and small.

[0012] Optionally, the pull rope connects the bottom of the sealing block to the bottom and top surface of the fixing frame.

[0013] Optionally, the air plate has several vent holes, each vent hole being a frustum-shaped structure with a larger top and a smaller bottom. The inner diameter of the bottom of the vent hole is matched with the outer diameter of the bottom of the sealing block, and the sealing block is placed inside the vent holes of the air plate.

[0014] Optionally, the controller is electrically connected to the dissolved oxygen analyzer, the fan, and the frequency converter.

[0015] This utility model provides an intelligent dissolved oxygen regulation device for biological treatment tanks, which has the following beneficial effects:

[0016] 1. This intelligent dissolved oxygen regulation device for a biological treatment tank monitors the dissolved oxygen content in wastewater by setting a preset standard dissolved oxygen value and using a dissolved oxygen analyzer. When the measured value does not meet the preset standard value at a certain time, the controller increases or decreases the air volume of the blower and the speed of the frequency converter, thereby adjusting the dissolved oxygen value in the tank in a timely manner to facilitate stable wastewater treatment.

[0017] 2. This intelligent dissolved oxygen regulation device for a biological treatment tank, by setting the sealing blocks to different sizes, can achieve a self-sealing effect on the air plate according to the air volume of the blower, ensuring stable air pressure, avoiding fluctuations in dissolved oxygen concentration in the tank, and using a mechanical structure to achieve a self-sealing effect can avoid accidents caused by the operation of electrically controlled valves in water, making the device operate more stably. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the internal structure of the water tank in the device of this utility model;

[0019] Figure 2 This is a schematic diagram of the connection structure between the aeration disc and the blower of this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the aeration disc of this utility model;

[0021] Figure 4 This is a cross-sectional view of the internal structure of the aeration disc of this utility model;

[0022] Figure 5 This is a schematic diagram of the working state of the sealing block of this utility model.

[0023] In the diagram: 1. Water tank; 2. Aeration disc; 201. Air disc; 202. Sealing block; 203. Fixing frame; 204. Pull rope; 205. Connecting pipe; 3. Dissolved oxygen analyzer; 4. Fan; 5. Frequency converter; 6. Controller; 7. Air duct; 8. Four-way fitting. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example

[0026] Please see Figures 1 to 5 The present invention provides a technical solution including a water tank 1, an aeration disc 2 and a dissolved oxygen analyzer 3 fixedly installed inside the water tank 1, a blower 4 arranged outside the water tank 1, a frequency converter 5 and a controller 6 arranged outside the blower 4, an air supply pipe 7 fixedly installed at the output end of the blower 4, and a four-way fitting 8 fixedly connected to one end of the air supply pipe 7. The controller 6 can be a Siemens S7-300 PLC controller or a programmable single-chip microcomputer controller. According to the initial intention and purpose of the implementation of the device, the controller 6 is programmed so that the controller 6 controls the working state of the blower 4 and the frequency converter 5 according to the preset dissolved oxygen value range and the dissolved oxygen value monitored by the dissolved oxygen analyzer 3, so as to automatically complete the corresponding control and operation in accordance with the implementation spirit of the above solution.

[0027] An air plate 201 is fixedly installed inside the aeration disc 2. Several sealing blocks 202 are set inside the air plate 201. Several fixing brackets 203 are fixedly installed at the bottom of the air plate 201. Pull ropes 204 are fixedly connected to the bottom of each sealing block 202. A connecting pipe 205 is fixedly installed at the bottom of the aeration disc 2.

[0028] The controller 6 is electrically connected to the dissolved oxygen analyzer 3, the blower 4, and the frequency converter 5. The blower 4 can be an SSR-50 Roots blower to deliver air to the aeration disc 2.

[0029] Specifically, by setting a preset standard dissolved oxygen value and a standard pressure range, the dissolved oxygen analyzer 3 monitors the dissolved oxygen content in the wastewater. When the measured value does not meet the preset standard value at a certain time, the controller 6 increases or decreases the air volume of the blower 4 and the speed of the frequency converter 5, thereby adjusting the dissolved oxygen value in the pool 1 in a timely manner, facilitating stable wastewater treatment. By setting the sealing block 202 to different sizes, the self-sealing effect of the air plate 201 can be achieved according to the air volume of the blower 4, ensuring stable air pressure and avoiding fluctuations in the dissolved oxygen concentration in the pool. Furthermore, the self-sealing effect achieved by this device using a mechanical structure can avoid accidents caused by the operation of the electrically controlled valve in the water, making the device operation more stable.

[0030] Please refer to Figure 2. The aeration disc 2 has three connection ports, the same number as the top connection port of the four-way pipe fitting 8. Both the aeration disc 2 and the four-way pipe fitting 8 are located inside the water tank 1.

[0031] The inner diameter of the four-way fitting 8 is equal to the outer diameter of the bottom connecting pipe 205 of the aeration disc 2. The aeration disc 2 is connected to the air supply pipe 7 through the connecting pipe 205 and the four-way fitting 8.

[0032] Specifically, the blower 4 is connected to the aeration disc 2 by using the air supply pipe 7, the four-way fitting 8 and the connecting pipe 205.

[0033] Please refer to Figure 3 to Figure 5 The blocking blocks 202 are divided into three types according to their size: small blocking blocks, medium blocking blocks, and large blocking blocks. The fixing frame 203 is also divided into three types according to the size of the blocking blocks 202: large, medium, and small.

[0034] The pull rope 204 connects the bottom of the sealing block 202 to the bottom and top surface of the fixing frame 203.

[0035] Specifically, by using the pull rope 204 in conjunction with the fixing frame 203, the movement of the sealing block 202 is restricted, preventing excessive airflow from blowing the sealing block 202 away.

[0036] Please see Figures 3 to 5 The air plate 201 has several vent holes, which are frustum-shaped with a larger top and a smaller bottom. The inner diameter of the bottom of the vent hole matches the outer diameter of the bottom of the sealing block 202. The sealing block 202 is placed inside the vent hole of the air plate 201. The sealing block 202 is also frustum-shaped. The maximum outer diameter of the sealing block 202 is smaller than the maximum inner diameter of the vent hole. When the sealing block 202 is at the bottom of the vent hole, the top height of the sealing block 202 is lower than the top height of the vent hole.

[0037] Specifically, by sealing different vents with sealing blocks 202 of different sizes, the air pressure can be stabilized, thus avoiding fluctuations in dissolved oxygen concentration in the pool caused by unstable air pressure.

[0038] In use, the standard dissolved oxygen value range of the wastewater in pool 1 and the standard pressure range of the air supply pipe 7 are preset first. When the dissolved oxygen analyzer 3 in pool 1 measures a real-time dissolved oxygen value that is below the minimum standard dissolved oxygen value at a certain time, the controller 6 controls the frequency converter 5 to increase the speed, thereby increasing the air volume of the blower 4 until the real-time dissolved oxygen value is within the standard range. At the same time, due to the increased air volume, the middle and large sealing blocks in the air plate 201 are blown away from the vent holes, doubling the air volume and the number of air inlets, so that the internal air pressure is the same, ensuring the stability of the air pressure and avoiding fluctuations in the dissolved oxygen concentration in the pool caused by unstable air pressure. When the air volume decreases, the force blowing the sealing block 202 decreases, causing the middle or large sealing block to fall back into the vent holes of the air plate 201. The decrease in air volume reduces the number of air inlets, thereby ensuring the stability of the internal air pressure. In addition, this device uses a mechanical structure to achieve a self-sealing effect, which can avoid accidents caused by the operation of the electrically controlled valve in water, making the device more stable in operation.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A smart dissolved oxygen regulating device for a biological treatment tank, comprising a water tank (1), characterized in that: An aeration disc (2) and a dissolved oxygen analyzer (3) are fixedly installed inside the water tank (1). A blower (4) is installed outside the water tank (1). A frequency converter (5) and a controller (6) are installed outside the blower (4). An air supply pipe (7) is fixedly installed at the output end of the blower (4). A four-way pipe fitting (8) is fixedly connected to one end of the air supply pipe (7). An air plate (201) is fixedly installed inside the aeration disc (2). Several sealing blocks (202) are provided inside the air plate (201). Several fixing brackets (203) are fixedly installed at the bottom of the air plate (201). Pull ropes (204) are fixedly connected to the bottom of each of the sealing blocks (202). A connecting pipe (205) is fixedly installed at the bottom of the aeration disc (2).

2. The intelligent dissolved oxygen regulating device for a biological treatment tank according to claim 1, characterized in that: The aeration disc (2) has three top connection ports, the same number as the four-way pipe fitting (8). Both the aeration disc (2) and the four-way pipe fitting (8) are located inside the water tank (1).

3. The intelligent dissolved oxygen regulating device for a biological treatment tank according to claim 1, characterized in that: The inner diameter of the four-way fitting (8) connection port is equal to the outer diameter of the bottom connecting pipe (205) of the aeration disc (2). The aeration disc (2) is connected to the air supply pipe (7) through the connecting pipe (205) and the four-way fitting (8).

4. The intelligent dissolved oxygen regulating device for a biological treatment tank according to claim 1, characterized in that: The blocking blocks (202) are divided into three types according to their size: small blocking blocks, medium blocking blocks and large blocking blocks. The fixing frame (203) is also divided into three types according to the size of the blocking blocks (202): large, medium and small.

5. The intelligent dissolved oxygen regulating device for a biological treatment tank according to claim 1, characterized in that: The pull rope (204) connects the bottom of the sealing block (202) and the bottom and top surfaces of the fixing frame (203).

6. The intelligent dissolved oxygen regulating device for a biological treatment tank according to claim 1, characterized in that... The air plate (201) has several vent holes. The vent holes are frustum-shaped with a larger top and a smaller bottom. The inner diameter of the bottom of the vent holes is matched with the outer diameter of the bottom of the sealing block (202). The sealing block (202) is placed inside the vent holes of the air plate (201).

7. The intelligent dissolved oxygen regulating device for a biological treatment tank according to claim 1, characterized in that: The controller (6) is electrically connected to the dissolved oxygen analyzer (3), the fan (4), and the frequency converter (5).

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