High-efficiency shallow air flotation device for treating suspended solids in wastewater

Abstract

The utility model relates to a high-efficiency shallow air flotation device for wastewater suspended matter treatment, which is applied to the technical field of water treatment and comprises a water purification tank, a waste residue tank and a filter tank, a driving column is mounted in the center of the bottom of the water purification tank, the water purification tank is mounted in the center of the bottom of the waste residue tank, and the waste residue tank is mounted in the center of the bottom of the filter tank. The driving column drives the residue filtering rod to rotate circumferentially, meanwhile, the rotating motor connected with the top end of the residue filtering rod controls the spiral mud bucket to rotate and scrapes out waste floating in the filtering tank, and then the waste enters an inner cavity of the residue filtering rod through the cleaning pipeline penetrating through the spiral mud bucket. The gas storage device installed on the residue filtering rod through the supporting frame conveys high-pressure gas to the spiral mud bucket through the cleaning pipeline installed on the gas storage device, waste materials are squeezed into an inner cavity of the residue filtering rod, then the high-pressure gas is conveyed into the inner cavity of the residue filtering rod through the ventilation pipes which are installed on the residue filtering rod and penetrate through the inner cavity of the residue filtering rod, and the blocked waste materials are discharged out of the residue filtering rod. And blockage is relieved.

Description

Technical Field

[0001] This utility model relates to a high-efficiency shallow air flotation, and in particular to a high-efficiency shallow air flotation for treating suspended solids in wastewater, applied in the field of water treatment technology. Background Technology

[0002] High-efficiency shallow air flotation is an air flotation device that integrates coagulation, flotation, skimming, sedimentation, and sludge scraping functions. It consists of five parts: a tank body, a rotating water distribution mechanism, a dissolved air release mechanism, a frame mechanism, and a water collection mechanism. The overall structure is cylindrical, compact, and shallow. All inlets and outlets are concentrated in the center of the tank body. All parts are closely connected and rotate around the center. Under certain pressure conditions, air and water are mixed to maximize the dissolution of gas into the water, striving to achieve a saturated state. Then, the pressure dissolved air water is released by decompression, generating a large number of microbubbles. These microbubbles come into full contact with the suspended flocs in the water, causing the suspended flocs to adhere to the microbubbles and float to the surface with the bubbles, forming scum. The scum is then scraped off, thereby purifying the water quality.

[0003] Patent CN218262043U discloses a high-efficiency shallow air flotation device. Addressing the problems of inconvenient replacement of the moving wheels in existing high-efficiency shallow air flotation devices, requiring significant time for replacement when the wheels are worn out, and hindering the separation of water and waste residue, thus complicating subsequent waste residue treatment, the following solution is proposed: The device includes a cylinder, with a protective cylinder rotatably mounted on the bottom inner wall of the cylinder. A rotating shaft is fixedly installed inside the protective cylinder, and a horizontal plate is fixedly installed on the top of the rotating shaft. An electric motor is fixedly installed on the top of the horizontal plate.

[0004] When filtering out waste residue, the spiral sludge hopper of this high-efficiency shallow air flotation device is prone to clogging, which affects the operation of the equipment, reduces the sludge filtration efficiency, and requires regular cleaning, resulting in high maintenance costs and a rapid decline in performance. Utility Model Content

[0005] The technical problem that this utility model aims to solve in view of the above-mentioned prior art is that waste residue easily causes blockage in the spiral sludge hopper, affecting equipment operation, reducing filter efficiency, and requiring regular cleaning, resulting in high maintenance costs and rapid performance degradation.

[0006] To address the aforementioned problems, this utility model provides a high-efficiency shallow air flotation system for treating suspended solids in wastewater, comprising a purification tank, a waste residue tank, and a filtration tank. A drive column is installed at the center of the bottom of the purification tank, which is located at the center of the bottom of the waste residue tank. The waste residue tank is located at the center of the bottom of the filtration tank. A filter rod is connected to the drive column, and a rotating motor is connected to the top of the filter rod. The output end of the rotating motor is connected to a spiral sludge hopper, which is located between the waste residue tank and the filtration tank. Multiple vent pipes penetrating the inner cavity of the filter rod are installed on the filter rod, and the other end of each vent pipe is connected to an air receiver. The air receiver is mounted on the filter rod via a support frame, and a cleaning pipe is connected to the top of the air receiver. The other end of the cleaning pipe penetrates the spiral sludge hopper.

[0007] In the aforementioned high-efficiency shallow air flotation process for treating suspended solids in wastewater, a rotating motor controls the rotation of a spiral sludge bucket to scrape off the waste floating in the filter tank. The waste then enters the inner cavity of the filter rod through a cleaning pipe that runs through the spiral sludge bucket. When blockage occurs, an air reservoir delivers high-pressure gas to the spiral sludge bucket through the cleaning pipe to force the waste into the inner cavity of the filter rod. High-pressure gas is then delivered to the inner cavity of the filter rod through a vent pipe to discharge the blocked waste from the filter rod.

[0008] As a further improvement of this application, a water distribution pipe and a water distribution baffle are installed on the drive column to cooperate with the spiral sludge hopper. A flocculant delivery pipe that cooperates with the water distribution pipe is connected to the top of the drive column. The flocculant delivery pipe is set between the water distribution pipe and the water distribution baffle. Multiple collection pipes are installed at the bottom of the filter tank. A solenoid valve is installed at the connection between each collection pipe and the bottom of the filter tank. A sludge discharge port that penetrates the filter tank is installed at the bottom of the filter tank. A sludge discharge pipe is installed at the bottom of the waste residue tank.

[0009] As a further improvement of this application, a sliding fixing port is installed at the connection between the cleaning pipe and the spiral sludge bucket, a filter scraper is installed at the bottom of the water distribution baffle, a dredging hole is opened around the bottom of the drive column, a support plate is connected to the bottom of the filter tank, and a fixed fence is set around the perimeter of the support plate.

[0010] As a further improvement of this application, a plurality of filter cake support rods are connected to the drive column, and each filter cake support rod is provided with a filter press plate inserted between the waste residue tank and the filter tank, and a filter scraper is installed at the bottom of the filter press plate.

[0011] As another improvement of this application, a plurality of scraper support rods are connected to the drive column, and a scraper plate is provided on the scraper support rods, which is inserted between the water purification tank and the waste residue tank. A filter scraper is installed at the bottom of the scraper plate, and a plurality of slag breaking pieces are provided on the scraper plate.

[0012] As a further improvement to this application, the filter press plate is made of a water-permeable, high-strength material, and the scraper plate is made of a high-strength, heat-resistant material.

[0013] In summary, under normal operation, the drive column drives the filter rod to rotate circumferentially, while the rotating motor controls the spiral sludge bucket to rotate and scrape out the waste floating in the filter tank. The waste then enters the inner cavity of the filter rod through the cleaning pipe that runs through the spiral sludge bucket. When blockage occurs, the air receiver delivers high-pressure gas to the spiral sludge bucket through the cleaning pipe installed on it, forcing the waste into the inner cavity of the filter rod. Then, multiple air vents installed on the filter rod that run through the inner cavity of the filter rod deliver high-pressure gas to the inner cavity of the filter rod, discharging the blocked waste from the filter rod and relieving the blockage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of the high-efficiency shallow air flotation system according to the first and second embodiments of this application;

[0015] Figure 2 This is a schematic diagram of the filter residue mechanism structure according to the first and second embodiments of this application;

[0016] Figure 3 This is a side cross-sectional view of the filter residue mechanism according to the first and second embodiments of this application;

[0017] Figure 4 This is a cross-sectional view of the cleaning connection side of the gas storage device according to the first and second embodiments of this application;

[0018] Figure 5 This is a schematic diagram showing the positional structure of the sludge discharge pipe, the collection pipe, and the sludge discharge port in the first and second embodiments of this application.

[0019] Figure 6 This is a schematic diagram showing the structural positions of the filter press plate and scraper plate in the first and second embodiments of this application.

[0020] Explanation of the labels in the diagram:

[0021] 1. Water purification tank; 2. Waste residue tank; 3. Filtration tank; 101. Drive column; 102. Filter rod; 103. Rotary motor; 104. Spiral sludge hopper; 105. Ventilation pipe; 106. Air storage tank; 107. Support frame; 108. Cleaning pipe; 109. Water distribution pipe; 110. Water distribution baffle; 111. Flocculant delivery pipe; 112. Collection pipe; 113. Sludge discharge port; 114. Sliding fixed port; 115. Support plate; 116. Fixed fence; 117. Sludge discharge pipe; 201. Filter support rod; 202. Filter press plate; 203. Sludge scraper support rod; 204. Sludge scraper plate; 205. Sludge breaking disc. Detailed Implementation

[0022] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0023] First implementation method:

[0024] Figures 1-5 This invention illustrates a high-efficiency shallow air flotation system for treating suspended solids in wastewater, comprising a water purification tank 1, a waste residue tank 2, and a filter tank 3. A drive column 101 is installed at the center of the bottom of the water purification tank 1, which can be controlled to rotate and drive the equipment. The water purification tank 1 is installed in the middle of the waste residue tank 2, and the waste residue tank 2 is installed in the middle of the filter tank 3. The tank body connection design achieves a compact structure and efficient space utilization. A filter rod 102 is connected to the drive column 101, and a rotary motor 103 is connected to the top of the filter rod 102. Preferably, the rotary motor 103 is a servo motor of model MSMF5AZL1U2M. The output end of the rotary motor 103 is connected to a spiral sludge hopper 104. During operation, the drive column 101 drives the filter rod 102 to rotate in a circular motion and controls the rotary motor 103. 3 drives the spiral sludge hopper 104 to operate. The spiral sludge hopper 104 is located between the waste residue tank 2 and the filter tank 3. Multiple vent pipes 105 are installed on the filter rod 102, penetrating the inner cavity of the filter rod 102. The other end of the vent pipe 105 is connected to the air receiver 106. When the equipment is blocked, the air receiver 106 delivers high-pressure gas to the vent pipe 105 to relieve the blockage. The air receiver 106 is installed on the filter rod 102 through the support frame 107, which is used to fix the air receiver 106. The top of the air receiver 106 is connected to the cleaning pipe 108. The other end of the cleaning pipe 108 penetrates the spiral sludge hopper 104. When the equipment is blocked, the air receiver 106 delivers high-pressure gas to the cleaning pipe 108 to relieve the blockage, and at the same time, it can clean the waste residue on the inner wall of the spiral sludge hopper 104.

[0025] Please see Figure 1 and Figure 5 The drive column 101 is equipped with a water distribution pipe 109 and a water distribution baffle 110 that cooperate with the spiral sludge hopper 104. The top of the drive column 101 is connected to a flocculant delivery pipe 111 that cooperates with the water distribution pipe 109. The water distribution pipe 109 generates a large number of microbubbles through pressure. The flocculant delivery pipe 111 is used to deliver flocculant and react with it in the water to produce suspended flocs. Through the full contact between the microbubbles and the suspended flocs, the suspended flocs in the water adhere to the microbubbles and float to the surface with the bubbles, forming scum. The flocculant delivery pipe 111 is located between the water distribution pipe 109 and the water distribution baffle 110. Between the plates 110, the water distribution baffle 110 reduces the reaction range and improves the reaction efficiency. Multiple collection pipes 112 are installed at the bottom of the filter tank 3. Each collection pipe 112 is connected to the bottom of the filter tank 3 with a solenoid valve. By controlling the opening and closing of the solenoid valve, the filtered water is collected through the collection pipe 112. A sludge discharge port 113 is installed at the bottom of the filter tank 3, and the settled waste residue is discharged through the sludge discharge port 113 during the filtration process. A sludge discharge pipe 117 is installed at the bottom of the waste residue tank 2 for discharging the waste residue in the waste residue tank 2.

[0026] Please see Figure 1 , Figure 3 and Figure 5 A sliding fixing port 114 is installed at the connection between the cleaning pipe 108 and the spiral sludge bucket 104. The sliding fixing port 114 prevents the cleaning pipe 108 from shifting and falling off during operation. A filter scraper is installed at the bottom of the water distribution baffle 110 to prevent the accumulated waste residue from affecting the operation of the equipment. A dredging hole is opened around the bottom of the drive column 101. Part of the filtered water in the collection pipe 112 enters the water purification tank 1 through the dredging hole and is used for the water distribution pipe 109. A support plate 115 is connected to the bottom of the filter tank 3 to support the equipment. A fixed fence 116 is set around the outside of the support plate 115 for protection.

[0027] In summary, a drive column 101 is installed at the center of the bottom of the water purification tank 1. During operation, the drive column 101 is rotated to drive the equipment. The water purification tank 1 is installed in the middle of the waste residue tank 2, and the waste residue tank 2 is installed in the middle of the filter tank 3. The tank connection design achieves a compact structure and effective space utilization. Based on the "shallow tank theory," it helps to improve treatment efficiency. When the drive column 101 is running, it drives the filter rod 102 connected to it to rotate in a circular motion. At the same time, it controls the rotating motor 103 to drive the spiral sludge hopper 104 to run. The air storage device 106 is fixed to the filter rod 102 by the support frame 107. The support frame 107 makes the filter rod 102 rotate in a circular motion. The connection structure is more stable. When the equipment becomes clogged, the gas reservoir 106 delivers high-pressure gas to the cleaning pipe 108, squeezing the waste material into the inner cavity of the filter rod 102. Then, multiple vent pipes 105 installed on the filter rod 102, penetrating the inner cavity of the filter rod 102, deliver high-pressure gas to discharge the clogged waste material from the filter rod 102 to alleviate the blockage. At the same time, delivering high-pressure gas into the cleaning pipe 108 can also clean the waste residue on the inner wall of the spiral sludge hopper 104. Before cleaning the waste residue, the water distribution pipe 109 generates a large number of microbubbles through pressure. The flocculant delivery pipe 111 is used to deliver flocculant and react with water to produce suspended flocs. Fine air bubbles come into full contact with suspended flocs, causing the suspended flocs in the water to adhere to the microbubbles and float to the surface with them, forming scum. The flocculant delivery pipe 111 is positioned between the water distribution pipe 109 and the water distribution baffle 110. The water distribution baffle 110 reduces the reaction area and improves reaction efficiency. Multiple collection pipes 112 are installed at the bottom of the filter tank 3. Each collection pipe 112 is connected to the bottom of the filter tank 3 by a solenoid valve. By controlling the opening and closing of the solenoid valves, the filtered water is collected through the collection pipes 112. Waste sludge settled at the bottom of the filter tank 3 is discharged through the sludge discharge port 113 during the filtration process. The sludge discharge pipe 117 discharges the waste residue from the waste residue pool 2. A sliding fixing port 114 is installed at the connection between the cleaning pipe 108 and the spiral sludge hopper 104 to prevent the cleaning pipe 108 from shifting or falling off during operation. The filter scraper installed at the bottom of the water distribution baffle 110 prevents the accumulated waste residue from affecting the operation of the equipment. Part of the filtered water in the collection pipe 112 enters the water purification pool 1 through the dredging hole at the bottom of the drive column 101 and is used for the water distribution pipe 109. The support plate 115 and the fixed fence 116 serve to support the equipment and provide protection, reducing maintenance costs and improving performance.

[0028] Second implementation method:

[0029] Figure 1 and Figure 6This invention illustrates a high-efficiency shallow air flotation method for treating suspended solids in wastewater. Unlike the first embodiment, a drive column 101 is connected to multiple filter cake support rods 201. Each filter cake support rod 201 is equipped with a filter press plate 202 inserted between the waste residue tank 2 and the filter tank 3. The filter press plate 202 is driven by the filter cake support rods 201 to press the waste residue at the bottom of the filter tank 3 out through the sludge discharge port 113. A filter scraper is installed at the bottom of the filter press plate 202 to disperse the deposited waste residue and prevent its accumulation from affecting equipment operation. Multiple scraper support rods are connected to the drive column 101. 203. A scraper plate 204 is installed on the scraper support rod 203 and inserted between the water purification tank 1 and the waste residue tank 2. The scraper plate 204 is driven by the scraper support rod 203 to discharge the waste residue at the bottom of the waste residue tank 2 from the sludge discharge pipe 117. A filter scraper is installed at the bottom of the scraper plate 204 to break up the deposited waste residue. Multiple slag breaking pieces 205 are installed on the scraper plate 204. During operation, the waste residue in the waste residue tank 2 gradually accumulates. At the same time, the slag breaking pieces 205 move with the scraper plate 204 and break up the accumulated waste residue to prevent the waste residue from accumulating and clogging, thus affecting the discharge efficiency.

[0030] Preferably, the filter press plate 202 is made of a high-strength, permeable material. The high strength reduces damage during operation, and the high permeability allows the filter press plate 202 to have a longer service life in the filter tank 3. The scraper plate 204 is made of a high-strength, heat-resistant material. The high strength reduces damage during operation, and the heat resistance makes the scraper plate 204 less susceptible to friction from the tank wall and waste residue.

[0031] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A high-efficiency shallow air flotation method for treating suspended solids in wastewater, characterized in that, It includes a water purification tank (1), a waste residue tank (2), and a filtration tank (3); A drive column (101) is installed in the center of the bottom of the water purification tank (1). The water purification tank (1) is installed in the middle of the waste residue tank (2). The waste residue tank (2) is installed in the middle of the filter tank (3). A filter rod (102) is connected to the drive column (101). A rotating motor (103) is connected to the top of the filter rod (102). A spiral sludge hopper (104) is connected to the output end of the rotating motor (103). The spiral sludge hopper (104) is located in the waste residue tank (2). Between the filter rod (102) and the filter tank (3), a number of air pipes (105) are installed on the filter rod (102) through the inner cavity of the filter rod (102). The other end of the air pipe (105) is connected to an air reservoir (106). The air reservoir (106) is installed on the filter rod (102) through a support frame (107). The top of the air reservoir (106) is connected to a cleaning pipe (108). The other end of the cleaning pipe (108) is connected to the spiral sludge bucket (104).

2. The high-efficiency shallow air flotation method for treating suspended solids in wastewater according to claim 1, characterized in that: The drive column (101) is equipped with a water distribution pipe (109) and a water distribution baffle (110) that cooperate with the spiral sludge hopper (104). The top of the drive column (101) is connected to a flocculant delivery pipe (111) that cooperates with the water distribution pipe (109). The flocculant delivery pipe (111) is located between the water distribution pipe (109) and the water distribution baffle (110). The bottom of the filter tank (3) is equipped with multiple collection pipes (112). Each collection pipe (112) is connected to the bottom of the filter tank (3) with a solenoid valve. The bottom of the filter tank (3) is equipped with a sludge discharge port (113) that penetrates the filter tank (3). The bottom of the waste residue tank (2) is equipped with a sludge discharge pipe (117).

3. The high-efficiency shallow air flotation method for treating suspended solids in wastewater according to claim 2, characterized in that: A sliding fixing port (114) is installed at the connection between the cleaning pipe (108) and the spiral sludge bucket (104). A filter scraper is installed at the bottom of the water distribution baffle (110). A dredging hole is provided around the bottom of the drive column (101). A support plate (115) is connected to the bottom of the filter tank (3). A fixed fence (116) is provided around the periphery of the support plate (115).

4. The high-efficiency shallow air flotation method for treating suspended solids in wastewater according to claim 1, characterized in that: The drive column (101) is connected to a plurality of filter cake support rods (201), and each filter cake support rod (201) is provided with a filter press plate (202) inserted between the waste residue pool (2) and the filter pool (3). A filter scraper is installed at the bottom of the filter press plate (202).

5. The high-efficiency shallow air flotation method for treating suspended solids in wastewater according to claim 4, characterized in that: Multiple scraper support rods (203) are connected to the drive column (101). A scraper plate (204) is provided on the scraper support rod (203) and inserted between the water purification tank (1) and the waste residue tank (2). A filter scraper is installed at the bottom of the scraper plate (204). Multiple slag breaking pieces (205) are provided on the scraper plate (204).

6. The high-efficiency shallow air flotation method for treating suspended solids in wastewater according to claim 5, characterized in that: The filter press plate (202) is made of a water-permeable high-strength material, and the slag scraper plate (204) is made of a high-strength heat-resistant material.

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