An air flotation treatment device

Abstract

This utility model belongs to the field of water treatment technology, and more specifically relates to a flotation treatment device, including a housing. The housing contains a pH adjustment tank, a sedimentation reaction tank, a flotation tank, a flotation pool, and a clear water pool. Agitators are installed in both the pH adjustment tank and the sedimentation reaction tank. A flotation release device is installed in the flotation tank. A scraping filter mechanism is installed in the flotation pool. A filter press is installed on one side of the housing, and the filter press is connected to the scraping filter mechanism to dewater the filtered residue. By designing the housing to integrate the pH adjustment tank, sedimentation reaction tank, flotation tank, flotation pool, and clear water pool into a continuous treatment unit, and configuring the filter press and scraping filter mechanism in conjunction, the optimized layout of the internal space of the housing reduces the equipment footprint, simplifies piping connections, and improves the collaborative efficiency of each treatment unit.

Description

Technical Field

[0001] This utility model belongs to the field of water treatment technology, and more specifically relates to an air flotation treatment device. Background Technology

[0002] Air flotation technology is widely used in the pretreatment or advanced treatment of industrial wastewater and some domestic sewage. It is especially suitable for treating pollutants containing oil, suspended solids, colloids, high color or density close to water. It is a highly efficient solid-liquid separation method that introduces microbubbles into the sewage, causing suspended solids or oil particles to adhere to the bubbles and float to the surface, and then be removed by a sludge scraper.

[0003] Existing flotation equipment typically consists of modules such as a reaction tank, a dissolved air system, a flotation tank, and a clear water collection tank. However, in actual operation, there is a problem of low functional integration. Traditional equipment requires separate configuration of multiple independent units such as pH adjustment, chemical dosing reaction, sedimentation, flotation, and clear water collection. These independent units are then connected by pipelines, resulting in a large footprint, complex pipeline connections, and low connection efficiency between units, which can easily lead to short-circuiting or uneven mixing. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a continuous flotation treatment device that integrates a pH adjustment tank, sedimentation reaction tank, flotation tank, flotation pool, and clear water tank into a single enclosure. It also features a filter press and a scraper filter mechanism working in tandem, optimizing the layout, reducing the equipment's footprint, simplifying piping connections, and improving the collaborative efficiency of each treatment unit.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an air flotation treatment device, comprising a housing, wherein the housing is provided with a pH adjustment tank, a sedimentation reaction tank, an air flotation tank, an air flotation pool, and a clear water tank; both the pH adjustment tank and the sedimentation reaction tank are provided with a stirrer; the air flotation tank is provided with an air flotation release device; the air flotation pool is provided with a scraping filter mechanism; and a filter press is provided on one side of the housing, the filter press being connected to the scraping filter mechanism to dewater and filter the filtered residue.

[0006] Furthermore, a gas-dissolving device is provided on one side of the housing, including an air compressor, a booster pump, and a gas-dissolving tank. The gas-dissolving tank is connected to a clean water pump to deliver clean water to the gas-dissolving tank. The air compressor is connected to the booster pump, which is connected to the gas-dissolving tank to deliver high-pressure air to the gas-dissolving tank. The gas-dissolving tank is connected to an air flotation release device.

[0007] Furthermore, the filter scraping mechanism includes a scraper installed on the upper layer of the flotation tank, the scraper being connected to a chain, rotating shafts fixed on both sides of the flotation tank, sprockets corresponding to the chain being installed on the rotating shafts, a drive motor being connected to one of the rotating shafts, a filter cake tank being installed between the flotation tank and the clear water tank, a slag discharge port being installed at the bottom of the filter cake tank, the slag discharge port being connected to a filter press, and a filter cake bucket being connected to the slag outlet of the filter press.

[0008] Furthermore, the sedimentation reaction tank includes a PAC reaction tank and a PAM reaction tank, the PAC reaction tank being connected to a pH adjustment tank, and the PAM reaction tank being connected to an air flotation tank.

[0009] Furthermore, the stirrer includes an air stirrer and a mechanical stirrer, the air stirrer being located in the pH adjustment tank and the PAC induction tank, and the mechanical stirrer being located in the PAM reaction tank.

[0010] Furthermore, the internal volumes of the pH adjustment tank, PAC reaction tank, and PAM reaction tank are the same.

[0011] Furthermore, one side of the enclosure is equipped with dosing tanks corresponding to the pH adjustment tank, PAC reaction tank, and PAM reaction tank, respectively, and a diaphragm pump is installed on the dosing pipeline to control the dosing amount.

[0012] Furthermore, it also includes a disinfection tank, which is connected to a clean water tank.

[0013] Compared with the prior art, the beneficial effects of this utility model are: by designing the box to integrate the pH adjustment tank, sedimentation reaction tank, flotation tank, flotation pool and clear water tank into a continuous treatment unit, and configuring the filter press and scraper mechanism in linkage, the internal space of the box is optimized to reduce the equipment footprint, simplify the pipeline connection and improve the collaborative efficiency of each treatment unit. Attached Figure Description

[0014] Figure 1 This is a top view of the structure of the air flotation treatment equipment of this utility model; Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the air flotation treatment equipment of this utility model.

[0015] Attached reference numerals: 1. Box body; 2. pH adjustment tank; 3. Flotation tank; 4. Clear water tank; 5. Flotation release device; 6. Filter press; 7. Air compressor; 8. Booster pump; 9. Aerosol tank; 10. Clear water pump; 11. Scraper; 12. Chain; 13. Shaft; 14. Drive motor; 15. Filter cake tank; 16. Filter cake bucket; 17. PAC reaction tank; 18. PAM reaction tank; 19. Mechanical stirrer; 20. Dosing tank; 21. Disinfectant tank; 22. Air stirrer; 23. Detailed Implementation

[0016] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0018] Reference Figure 1 The present invention will be further described below.

[0019] Example 1: A flotation treatment device includes a housing 1, which houses a pH adjustment tank 2, a PAC reaction tank 18, a PAM reaction tank 19, a flotation tank 3, a flotation pool 4, and a clear water pool 5. Each of the pH adjustment tank 2, PAC reaction tank 18, and PAM reaction tank 19 is equipped with a stirrer. The flotation tank 3 is equipped with a flotation release device 6. The flotation pool 4 is equipped with a scraping filter mechanism. A filter press 7 is located on one side of the housing 1, connected to the scraping filter mechanism, to dewater the filtered residue. Specifically, a wastewater collection tank can be installed on one side of the pH adjustment tank 2, and wastewater can be pumped into the pH adjustment tank 2. Specifically, the pH adjustment tank 2, PAC reaction tank 18, PAM reaction tank 19, flotation tank 3, flotation pool 4, and clear water pool 5 are directly connected by a submersible pump for liquid transport. Figure 1 As shown, in this preferred embodiment, a dissolved air device is provided on one side of the housing 1, including an air compressor 8, a booster pump 9, and an aerosol tank 10. The aerosol tank 10 is connected to a clean water pump 11 to deliver clean water to the aerosol tank 10. The air compressor 8 is connected to the booster pump 9, which in turn is connected to the aerosol tank 10 to deliver high-pressure air to the aerosol tank 10. The aerosol tank 10 is connected to an air flotation release device 6. Specifically, a portion of the clean water in the clean water tank 5 is delivered to the aerosol tank 10 via the clean water pump 11. The air compressor 8 and the booster pump 9 dissolve air in the clean water of the aerosol tank 10, which is then delivered to the air flotation release device 6 to generate tiny bubbles that cause the flocculated material to float. Figure 1 As shown, in this preferred embodiment, the scraping filter mechanism includes a scraper 12 mounted on the upper layer of the flotation tank 4. The scraper 12 is connected to a chain 13. Rotating shafts 14 are fixed on both sides of the flotation tank 4, and sprockets corresponding to the chains 13 are mounted on the rotating shafts 14. A drive motor 15 is connected to one of the rotating shafts 14. A filter cake tank 16 is provided between the flotation tank 4 and the clear water tank 5. A discharge port is provided at the bottom of the filter cake tank 16, and the discharge port is connected to a filter press 7. The discharge port of the filter press 7 is connected to a filter cake bucket 17. Specifically, a diaphragm pump can be installed between the discharge port and the filter press 7 to transport the filter cake containing moisture. The water filtered by the filter press 7 is then returned to the wastewater collection tank through a pipeline. Figure 1 As shown, in this preferred embodiment, the PAC reaction tank 18 is connected to the pH adjustment tank 2, and the PAM reaction tank 19 is connected to the flotation tank 3. The combination of PAC (polyaluminum chloride) and PAM (polyacrylamide) enables the wastewater to achieve optimal flocculation. Figure 1 As shown, in this preferred embodiment, the agitator includes an air agitator 23 and a mechanical agitator 20. The air agitator 23 is located in the pH adjustment tank 2 and the PAC reaction tank 18, while the mechanical agitator 20 is located in the PAM reaction tank 19. Specifically, the air agitator 23 can improve the effectiveness of pH adjustment and the PAC reaction, resulting in a more complete reaction, while the mechanical agitator 20 can prevent large flocs from settling to the bottom while ensuring a complete reaction. Figure 1 As shown, in this example, preferably, the internal volumes of the pH adjustment tank 2, the PAC reaction tank 18, and the PAM reaction tank 19 are the same. Figure 1 As shown, in this preferred embodiment, one side of the housing 1 is provided with dosing tanks 21 corresponding to the pH adjustment tank 2, the PAC reaction tank 18, and the PAM reaction tank 19, respectively, and a diaphragm pump is installed on the dosing pipeline to control the dosing amount. Figure 1 As shown, in this preferred embodiment, a disinfection tank 22 is also included. The disinfection tank 22 is connected to the clear water tank 5, and the clear water is further purified by adding disinfectant to the clear water tank 5. Figure 1As shown, during equipment operation, raw water first enters the pH adjustment tank 2, where its acidity and alkalinity are adjusted by the dosing tank 21. Then, it enters the PAC reaction tank 18 for reaction and flocculation, followed by the PAM reaction tank 19 for further reaction and flocculation. Finally, the mixed water enters the dissolved air flotation (DAF) tank 3, where the internal DAF release device 6 causes the flocculated material in the mixed water to float to the surface and enter the DAF tank 4. When the floating material in the DAF tank 4 rises to the position of the scraper 12, the drive motor 15 drives the rotating shaft 14 to rotate, which in turn drives the scraper 12 on the chain 13 to move in the upper layer of the DAF tank 4, thereby passing through the scraper 12... The moving parts continuously scrape the floating matter on the upper layer into the filter cake tank 16, while the clear water at the bottom is discharged into the clear water tank 5 through pipes. Finally, the clear water is discharged by the clear water pump 11. The water-containing flocculent matter in the filter cake tank 16 is discharged into the filter press 7 for further filtration to form fixed filter cake. The pH adjustment tank 2, PAC reaction tank 18, PAM reaction tank 19, air flotation tank 3, air flotation tank 4 and clear water tank 5 are integrated into a continuous treatment unit, and the filter press 7 is linked with the scraping filter mechanism. Through the optimized layout of the internal space of the box 1, the equipment footprint is reduced, the pipeline connection is simplified, and the collaborative efficiency of each treatment unit is improved.

[0020] Example 2: A flotation treatment device includes a housing 1. The housing 1 contains a pH adjustment tank 2, a PAC reaction tank 18, a PAM reaction tank 19, a flotation tank 3, a flotation pool 4, and a clear water tank 5. Agitators are installed in the pH adjustment tank 2, PAC reaction tank 18, and PAM reaction tank 19. A flotation release device 6 is installed in the flotation tank 3. A scraping filter mechanism is installed in the flotation pool 4. A filter press 7 is installed on one side of the housing 1. The filter press 7 is connected to the scraping filter mechanism to dewater the filtered residue. Figure 2 As shown, for a large box 1, it can be divided into two smaller boxes 1, and each box 1 can operate independently.

[0021] The other technical features in this example are the same as those in Embodiment 1.

[0022] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An air floatation treatment apparatus, characterized by: The device includes a housing, which contains a pH adjustment tank, a sedimentation reaction tank, an air flotation tank, an air flotation pool, and a clear water tank. Both the pH adjustment tank and the sedimentation reaction tank are equipped with agitators. The air flotation tank is equipped with an air flotation release device. The air flotation pool is equipped with a scraping filter mechanism. A filter press is installed on one side of the housing, and the filter press is connected to the scraping filter mechanism to dewater the filtered residue.

2. The air floatation treatment apparatus according to claim 1, characterized by: A gas dissolving device is installed on one side of the housing, including an air compressor, a booster pump, and a gas dissolving tank. The gas dissolving tank is connected to a clean water pump to deliver clean water to the gas dissolving tank. The air compressor is connected to the booster pump, which is connected to the gas dissolving tank to deliver high-pressure air to the gas dissolving tank. The gas dissolving tank is connected to an air flotation release device.

3. The air floatation treatment apparatus according to claim 1, characterized by: The scraping filter mechanism includes a scraper installed on the upper layer of the flotation tank. The scraper is connected to a chain. Rotating shafts are fixed on both sides of the flotation tank. Sprockets corresponding to the chains are installed on the rotating shafts. A drive motor is connected to one of the rotating shafts. A filter cake tank is provided between the flotation tank and the clear water tank. A slag discharge port is provided at the bottom of the filter cake tank. The slag discharge port is connected to a filter press. The slag outlet of the filter press is connected to a filter cake bucket.

4. The air floatation treatment apparatus according to claim 1, characterized by: The sedimentation reaction tank includes a PAC reaction tank and a PAM reaction tank. The PAC reaction tank is connected to a pH adjustment tank, and the PAM reaction tank is connected to an air flotation tank.

5. The air floatation treatment apparatus according to claim 4, characterized by: The agitator includes an air agitator and a mechanical agitator. The air agitator is located in the pH adjustment tank and the PAC induction tank, and the mechanical agitator is located in the PAM reaction tank.

6. The air floatation treatment apparatus according to claim 4, characterized by: The pH adjustment tank, PAC reaction tank, and PAM reaction tank have the same internal volume.

7. The air floatation treatment apparatus according to claim 4, characterized by: One side of the enclosure is equipped with dosing tanks corresponding to the pH adjustment tank, PAC reaction tank and PAM reaction tank respectively, and a diaphragm pump is installed on the dosing pipeline to control the dosing amount.

8. The air floatation treatment apparatus according to claim 1, characterized by: It also includes a disinfection tank, which is connected to a clean water tank.

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