A gas stirring device for pre-dosing of chemicals in a secondary sedimentation tank

Abstract

This utility model provides a gas mixing device for pre-treatment of chemicals in a secondary sedimentation tank, belonging to the field of wastewater treatment. The device includes a porous distributor, a dosing channel, and an aeration channel. A guide channel is provided at the front end of the secondary sedimentation tank. The porous distributor is located at the bottom of the guide channel and has a cavity inside. Multiple air holes are formed on the porous distributor, and an air inlet pipe is provided on the porous distributor, communicating with the air holes through the cavity. The input end of the dosing channel is connected to a dosing mechanism, and the output end is connected to the air inlet pipe. The input end of the aeration channel is connected to a blower, and the output end is connected to the air inlet pipe. The gas mixing device for pre-treatment of chemicals in a secondary sedimentation tank provided by this utility model can solve the problems of insufficient mixing and short service life in existing technologies.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a gas stirring device for adding chemicals before a secondary sedimentation tank. Background Technology

[0002] Due to seasonal changes, fluctuations in air and water temperature, large diurnal temperature range, poor sludge settling performance, and insufficient aeration of the biological system at night, the sludge-water separation effect in the secondary sedimentation tank is poor, with sludge churning occurring, affecting the effluent quality. After optimizing and adjusting the process, polyacrylamide cationic solution is added to the diversion channel at the front end of the secondary sedimentation tank. After being fully mixed with the mixed liquid from the aeration tank, its coagulation effect can improve the compactness of the sludge, increase the specific gravity of the sludge, and improve the sludge settling performance of the secondary sedimentation tank.

[0003] In existing technologies, mechanical flow mixers are usually installed in the diversion channel to stir the chemicals added to the diversion channel, so that the sewage and chemicals in the diversion channel are fully mixed before being discharged into the secondary sedimentation tank.

[0004] Existing mixing devices use mechanical agitators, which cannot cover the entire diversion channel, easily leading to insufficient mixing of the chemicals. Furthermore, the mechanical agitators are easily entangled by flocculent matter in the sewage during rotation, which can cause component damage and require frequent replacement, resulting in a short service life. Utility Model Content

[0005] This utility model provides a gas stirring device for pre-dosing in a secondary sedimentation tank, which solves the problems of insufficient stirring and short service life in the prior art. The technical solution is as follows:

[0006] A gas stirring device for pre-dosing in a secondary sedimentation tank, used for stirring the front end of the dosing process in the secondary sedimentation tank, includes: a porous distributor, a dosing channel, and an aeration channel.

[0007] A flow guide channel is provided at the front end of the secondary sedimentation tank. The porous distributor is located at the bottom of the flow guide channel. The porous distributor has a cavity inside and multiple air holes. An air inlet pipe is provided on the porous distributor. The air inlet pipe communicates with the air holes through the cavity. The input end of the dosing channel is connected to the dosing mechanism, and the output end is connected to the air inlet pipe. The input end of the aeration channel is connected to the blower, and the output end is connected to the air inlet pipe.

[0008] Optionally, the porous distributor has an annular structure, and the pores are uniformly distributed on the upper surface of the porous distributor.

[0009] Optionally, the porous distributor is provided with radially arranged reinforcing ribs, and the reinforcing ribs are provided with a plurality of air holes.

[0010] Optionally, the perforated distributor is provided with a lifting ring, and a lifting chain is connected to the lifting ring. The other end of the lifting chain is connected to a lifting mechanism.

[0011] Optionally, it also includes a control system, wherein a dosing pump is provided on the dosing channel, and the dosing pump is signal-connected to the control system.

[0012] Optionally, a chemical flow meter is installed on the dosing channel, and the chemical flow meter is signal-connected to the control system.

[0013] Optionally, a valve is provided on the inflation channel, and the valve is signal-connected to the control system.

[0014] Optionally, a gas flow meter is provided on the inflation channel, and the gas flow meter is signal-connected to the control system.

[0015] Optionally, a turbidity sensor is installed in the secondary sedimentation tank, and the turbidity sensor is connected to the control system.

[0016] Optionally, the porous distributor is made of stainless steel.

[0017] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following:

[0018] This utility model provides a gas-agitated device for pre-dosing of chemicals in a secondary sedimentation tank. A porous distributor is installed at the bottom of the diversion channel. Chemicals are introduced through a dosing channel into the air inlet pipe, and air is introduced through an inflation channel into the air inlet pipe. This air carries the chemicals through the cavities of the porous distributor and out through the pores. Since the porous distributor is located at the bottom of the diversion channel, while the water flow channel into the secondary sedimentation tank is located in the upper half of the tank, the chemicals float upwards with the air, fully mixing with the wastewater in the diversion channel before being discharged into the secondary sedimentation tank. This structure uses a blower to inflate the porous distributor, eliminating the need for other rotating agitators to ensure thorough mixing of the chemicals with the wastewater in the diversion channel. Furthermore, the device's physical structure is not affected by flocculent material, resulting in a longer service life. This effectively solves the problems of insufficient mixing and short service life in existing technologies. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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.

[0020] Figure 1This is a schematic diagram of the overall structure of the device provided in this embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the porous distributor structure provided in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of signal transmission provided in an embodiment of the present invention.

[0023] In the diagram: 101-Secondary sedimentation tank; 102-Diversion channel; 103-Aeration tank; 1-Porous distributor; 11-Air hole; 12-Air inlet pipe; 13-Reinforcing rib; 14-Lifting ring; 15-Lifting chain; 16-Lifting mechanism; 2-Dosing channel; 21-Dosing pump; 22-Drug flow meter; 3-Aeration channel; 31-Valve; 32-Gas flow meter; 33-Pressure gauge; 34-Check valve; 4-Dosing mechanism; 5-Blower; 6-Control system; 7-Turbidity sensor. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the overall structure of the device provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the porous distributor structure provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of signal transmission provided by an embodiment of this utility model. (See diagram below.) Figures 1 to 3 The device shown is a gas stirring device for adding chemicals before a secondary sedimentation tank, used to stir the front end of the secondary sedimentation tank 101. It includes a porous distributor 1, a dosing channel 2, and an aeration channel 3. A guide channel 102 is provided at the front end of the secondary sedimentation tank 101. The porous distributor 1 is located at the bottom of the guide channel 102. A cavity is opened inside the porous distributor 1. Multiple air holes 11 are opened on the porous distributor 1. An air inlet pipe 12 is provided on the porous distributor 1. The air inlet pipe 12 is connected to the air holes 11 through the cavity. The input end of the dosing channel 2 is connected to the dosing mechanism 4, and the output end is connected to the air inlet pipe 12. The input end of the aeration channel 3 is connected to the blower 5, and the output end is connected to the air inlet pipe 12.

[0026] For example, in this embodiment of the present invention, an aeration tank 103 is also provided at the front end of the diversion channel 102. During the sewage treatment process, the sewage in the aeration tank 103 flows into the diversion channel 102, and after mixing and reacting with the cationic solution in the diversion channel 102, it flows into the secondary sedimentation tank 101. The dosing channel 2 and the air filling channel 3 are both made of PE material. After inserting the dosing channel 2 and the air filling channel 3 into the air inlet pipe 12 and sealing the connection, the porous distributor 1 is installed at the bottom of the diversion channel 102 4m above the water surface. The dosing mechanism 4 adds the agent into the porous distributor 1 through the dosing channel 2, and the blower 5 fills the porous distributor 1 with air through the air filling channel 3, so that the filled air carries the agent out from the air holes 11 of the porous distributor 1. Since both the dosing channel 2 and the aeration channel 3 are connected to the air inlet pipe 12, when the pressure in the dosing channel 2 is lower than that in the aeration channel 3, air in the aeration channel 3 may easily enter the dosing channel 2, hindering the addition of the agent to the air inlet pipe 12. Therefore, the pressure in the dosing channel 2 can be set to be greater than that in the aeration channel 3, and a check valve 34 is installed on the aeration channel 3 to prevent the agent from directly entering the aeration channel 3 due to excessive pressure in the dosing channel 2. The check valve 34 can prevent the agent from entering the aeration channel 3 and causing system turbulence. Since the porous distributor 1 is located at the bottom of the diversion channel 102, the injected air will carry the agent and float upward from the bottom of the diversion channel 102. The mixing is enhanced by the gas-liquid shearing action, thereby making the agent and the sewage in the diversion channel 102 mix more thoroughly, which can effectively solve the problem of insufficient mixing in the prior art. Meanwhile, since there is no need to use mechanical stirring to mix the agent and sewage, and there is no problem of rotating parts being entangled by flocculent matter in the sewage, the porous distributor 1 can be made of corrosion-resistant materials such as stainless steel to improve its lifespan when immersed in sewage, which can effectively solve the problem of short service life in the prior art.

[0027] This utility model provides a gas-agitated device for pre-dosing of chemicals in a secondary sedimentation tank. A porous distributor is installed at the bottom of the diversion channel 102. Chemicals are introduced through the dosing channel into the air inlet pipe, and air is introduced through the inflation channel into the air inlet pipe. This air carries the chemicals through the cavity of the porous distributor and out through the pores. Since the porous distributor is located at the bottom of the diversion channel, and the water flow channel into the secondary sedimentation tank is located in the upper middle part of the tank, the chemicals float upwards from the bottom with the air, fully mixing with the wastewater in the diversion channel before flowing into the secondary sedimentation tank. This structure uses a blower to inflate the porous distributor, eliminating the need for other rotating agitators to fully mix the chemicals with the wastewater in the diversion channel. Furthermore, the device's physical structure is not affected by flocculent material, resulting in a longer service life. This effectively solves the problems of insufficient mixing and short service life in existing technologies.

[0028] Optionally, the porous distributor 1 has an annular structure, with pores 11 evenly distributed on the upper surface of the porous distributor 1.

[0029] For example, in this embodiment of the invention, the length of the air inlet pipe 12 is 0.5m, the annular diameter of the porous distributor 1 is 1m, the diameter of the air holes 11 is less than or equal to 0.5mm, and the spacing between the air holes is 10mm. Setting the porous distributor 1 in an annular structure saves material compared to using a disc-shaped structure, thereby reducing production costs. Distributing the air holes 11 evenly on the upper surface of the porous distributor 1 allows the injected gas to escape smoothly from the porous distributor 1, preventing the air from being blocked by the porous distributor 1 itself, thus improving the stability of the device.

[0030] Optionally, the porous distributor 1 is provided with radially arranged reinforcing ribs 13, and the reinforcing ribs 13 are provided with a plurality of air holes 11.

[0031] For example, in this embodiment of the present invention, by providing reinforcing ribs 13 on the annular porous distributor 1, the structural strength of the porous distributor 1 can be improved. At the same time, by uniformly distributing multiple air holes 11 on the reinforcing ribs 13, the efficiency of drug addition can be improved, thereby improving the mixing efficiency of the device.

[0032] Optionally, the multi-hole distributor 1 is provided with a lifting ring 14, and a lifting chain 15 is connected to the lifting ring 14. The other end of the lifting chain 15 is connected to the lifting mechanism 16.

[0033] For example, in this embodiment of the present invention, by providing a lifting ring 14 and a lifting chain 15, the lifting mechanism 16 can lift the perforated distributor 1 from the pool through the lifting ring 14 and the lifting chain 15, thereby facilitating the maintenance or replacement of the perforated distributor 1 and improving the ease of operation of the device.

[0034] Optionally, it also includes a control system 6, and a dosing pump 21 is provided on the dosing channel 2. The dosing pump 21 is connected to the control system 6 via signal.

[0035] For example, in this embodiment of the present invention, by setting up a dosing pump 21, the dosing amount of the dosing mechanism 4 can be adjusted, so that the device can adjust the agent according to the sewage treatment situation. Furthermore, by connecting the dosing pump 21 to the control system 6, it can be controlled by the corresponding software inside the control system 6, thereby improving the automation level of the device.

[0036] Optionally, a chemical flow meter 22 is installed on the chemical dosing channel 2, and the chemical flow meter 22 is connected to the control system 6 via signal.

[0037] For example, in this embodiment of the present invention, the chemical flow meter 22 is set at the rear end of the dosing pump 21. By setting the chemical flow meter 22, the dosage of the chemical added into the diversion channel 102 can be monitored in real time, and the data information can be transmitted to the control system 6, so that the control system 6 can make timely adjustments according to the dosage of the chemical and the condition of the sewage, thereby further improving the automation level of the device.

[0038] Optionally, a valve 31 is provided on the inflation channel 3, and the valve 31 is connected to the control system 6 via a signal.

[0039] For example, in this embodiment of the invention, by setting valve 31, the flow rate of air introduced by blower 5 is controlled, which can be adjusted according to the dosage and wastewater conditions, thereby ensuring more thorough mixing of the agent and wastewater and further improving the mixing efficiency of the device. Valve 31 can be an electrically controlled valve, and it is connected to the control system 6 via signal transmission. It can be controlled by the corresponding software within the control system 6, further improving the automation level of the device. A pressure gauge 33 can also be installed at the front end of valve 31 to read the flow rate of air introduced by blower 5.

[0040] Optionally, a gas flow meter 32 is installed on the inflation channel 3, and the gas flow meter 32 is connected to the control system 6 via signal.

[0041] For example, in this embodiment of the present invention, the gas flow meter 32 is installed at the rear end of the valve 31. By installing the gas flow meter 32, the amount of air added into the diversion channel 102 can be monitored in real time, and the data information can be transmitted to the control system 6. This allows the control system 6 to adjust the aeration amount in a timely manner according to the added agent and sewage conditions, so that the agent and sewage can be mixed more thoroughly, thereby further improving the automation level of the device.

[0042] Optionally, a turbidity sensor 7 is installed in the secondary sedimentation tank 101, and the turbidity sensor 7 is connected to the control system 6.

[0043] For example, in this embodiment of the present invention, the turbidity sensor 7 is installed in the secondary sedimentation tank 101 to monitor the turbidity of the sewage in the secondary sedimentation tank 101 in real time and transmit the data to the control system 6. After analyzing the data, the control system 6 controls the dosing pump 21 and valve 31 to adjust the dosage of added medicine and the amount of gas, so as to adapt to sewage of different states or different components, thereby further improving the automation level of the device.

[0044] Optionally, the porous distributor 1 is made of stainless steel.

[0045] For example, in this embodiment of the present invention, stainless steel has excellent corrosion resistance, high and low temperature resistance, and easy cleaning properties, as well as high strength and good processability. By making the porous distributor 1 a stainless steel part, it is not only easy to process, but also its service life can be improved, thereby improving the service life of the device and reducing the operating cost of the device.

[0046] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0047] The above description is only an optional embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gas stirring device for adding chemicals before a secondary sedimentation tank, used to stir the front end of the chemical addition process in the secondary sedimentation tank (101), characterized in that, include: The porous distributor (1), the dosing channel (2), and the air filling channel (3) are all included. The secondary sedimentation tank (101) is provided with a guide channel (102) at the front end. The porous distributor (1) is located at the bottom of the guide channel (102). The porous distributor (1) has a cavity inside and multiple air holes (11) on it. The porous distributor (1) is provided with an air inlet pipe (12). The air inlet pipe (12) is connected to the air holes (11) through the cavity. The input end of the dosing channel (2) is connected to the dosing mechanism (4), and the output end is connected to the air inlet pipe (12). The input end of the air filling channel (3) is connected to the blower (5), and the output end is connected to the air inlet pipe (12).

2. The gas stirring device for pre-dosing of chemicals in a secondary sedimentation tank according to claim 1, characterized in that, The porous distributor (1) has a ring structure, and the pores (11) are evenly distributed on the upper surface of the porous distributor (1).

3. The gas stirring device for pre-dosing of chemicals in a secondary sedimentation tank according to claim 2, characterized in that, The porous distributor (1) is provided with radially arranged reinforcing ribs (13), and the reinforcing ribs (13) are provided with a plurality of air holes (11).

4. The gas stirring device for pre-dosing of chemicals in a secondary sedimentation tank according to claim 1, characterized in that, The porous distributor (1) is provided with a lifting ring (14), and a lifting chain (15) is connected to the lifting ring (14). The other end of the lifting chain (15) is connected to the lifting mechanism (16).

5. The gas stirring device for pre-dosing of chemicals in a secondary sedimentation tank according to claim 1, characterized in that, It also includes a control system (6), and a dosing pump (21) is provided on the dosing channel (2), and the dosing pump (21) is connected to the control system (6) by signal.

6. The gas stirring device for pre-dosing of chemicals in a secondary sedimentation tank according to claim 5, characterized in that, A drug flow meter (22) is installed on the drug dosing channel (2), and the drug flow meter (22) is connected to the control system (6) via signal.

7. The gas stirring device for pre-dosing of chemicals in a secondary sedimentation tank according to claim 5, characterized in that, A valve (31) is provided on the inflation channel (3), and the valve (31) is connected to the control system (6) via signal.

8. The gas stirring device for pre-dosing of chemicals in a secondary sedimentation tank according to claim 7, characterized in that, A gas flow meter (32) is installed on the inflation channel (3), and the gas flow meter (32) is connected to the control system (6) via signal.

9. The gas stirring device for pre-dosing of chemicals in a secondary sedimentation tank according to claim 5, characterized in that, A turbidity sensor (7) is installed in the secondary sedimentation tank (101), and the turbidity sensor (7) is connected to the control system (6) via signal.

10. The gas stirring device for pre-dosing of chemicals in a secondary sedimentation tank according to claim 1, characterized in that, The porous distributor (1) is made of stainless steel.

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