Wheat starch concentrated wastewater degradation equipment based on air floatation and biological treatment coupling

Abstract

The application discloses a wheat starch concentrated wastewater degradation equipment based on air floatation and biological treatment coupling, belongs to the technical field of food wastewater treatment, and specifically comprises a degradation cylinder, an inner disc rack is arranged on the inner bottom wall of the degradation cylinder, and a multistage aeration cone disc is arranged at the top center of the inner disc rack. The application realizes uniform injection at multiple points by cooperation of a shunt injection frame and an injection valve, avoids impurity deposition, cooperates the multistage aeration cone disc with injection, facilitates cleaning of the deposited impurities, and realizes layered operation of the fixed and movable stirring paddles, accelerates mixing of the bubbles and the wastewater, enhances the treatment effect, realizes double filtration of the biological filter membrane frame group, effectively intercepts suspended matters, directionally discharge the purified wastewater, and the slag pumping adjusting frame, lifting cylinders and other devices can flexibly clean the intercepted suspended matters in the equipment, ensure stable operation of the equipment, and realize efficient air floatation and biological coupling treatment.

Description

Technical Field

[0001] This invention relates to the field of food wastewater treatment technology, specifically to a wheat starch concentration wastewater degradation device based on air flotation and biological treatment coupling. Background Technology

[0002] In today's starch production industry, wheat starch is an important product, and the wastewater treatment problem generated during the production process is becoming increasingly prominent. From the perspective of wastewater sources, wheat starch concentrate wastewater mainly originates from key process steps such as washing, filtration, and concentration in the starch processing flow. This wastewater is rich in a large number of dissolved organic pollutants, such as starch, protein, sugar, carbohydrates, fat, and amino acids, which are all common components. It also contains a certain amount of inorganic compounds containing nitrogen and phosphorus, as well as volatile acids, ash, and other substances. Judging from its properties, wheat starch concentrate wastewater belongs to high-concentration organic wastewater with good biodegradability, but it is difficult to treat due to its high ammonia nitrogen and salt content.

[0003] Traditional treatment processes have revealed many limitations when dealing with wheat starch concentration wastewater:

[0004] In the solid-liquid separation process, conventional methods such as sedimentation are inefficient and cannot quickly and effectively separate suspended matter in wastewater, leading to an increased load on subsequent treatment processes. For example, in a treatment system using a simple sedimentation process, the supernatant obtained still contains a lot of suspended matter, which affects the activity of microorganisms in the subsequent biological treatment unit.

[0005] In terms of organic matter degradation, aerobic biological treatment alone is energy-intensive and has poor treatment effect for high-concentration wheat starch concentrate wastewater, and cannot fully degrade the organic matter in the wastewater to meet the standard level. Although anaerobic biological treatment has a certain degradation capacity for high-concentration organic matter, when used alone, the effluent quality is still difficult to meet the increasingly strict discharge standards.

[0006] In starch wastewater treatment practice, flotation technology can not only effectively remove suspended solids, but also reduce pollutant indicators such as COD, BOD and color to a certain extent. However, when flotation technology is used alone to treat wheat starch concentration wastewater, it is still difficult to deeply filter or degrade the suspended solids in the wastewater, and the wastewater cannot ultimately meet the discharge standards. Summary of the Invention

[0007] The purpose of this invention is to provide a wheat starch concentration wastewater degradation device based on air flotation and biological treatment coupling to solve the problems mentioned above.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a wheat starch concentration wastewater degradation device based on air flotation and biological treatment coupling, comprising a degradation cylinder, an internal disc frame provided on the bottom wall of the degradation cylinder, a multi-stage aeration cone disc provided at the top center of the internal disc frame, a diversion injection frame connected to the inner wall of the degradation cylinder provided above the internal disc frame, a number of injection branch pipes arranged in a ring array on the inner wall of the diversion injection frame, and a drive shaft rod sleeved through the middle of the multi-stage aeration cone disc;

[0009] The bottom of the drive shaft is provided with an adjustable disc frame near the diversion and feeding frame. The adjustable disc frame is provided with a movable stirring paddle. The top of the drive shaft is fitted with a bio-filter membrane frame assembly.

[0010] The biofiltration membrane frame assembly includes a conical inner disk and a permeation cone disk. A slag extraction adjustment frame is slidably sleeved on the top edge of the degradation cylinder. A slag lifting beam frame connected to the outer wall of the degradation cylinder is provided on the outside of the slag extraction adjustment frame.

[0011] Furthermore, the built-in disc frame has several sets of rectangular grooves recessed at its edge, and a slag discharge gate valve is slidably sleeved inside the rectangular groove. A slag discharge port that is connected to the slag discharge gate valve is provided through the bottom of the degradation cylinder.

[0012] Furthermore, the bottom of the built-in disc frame is provided with a drive motor that is fixedly connected to the bottom outer wall of the degradation cylinder. The output end of the drive motor is sleeved with the transmission shaft. The outer wall of the side of the multi-stage aeration cone disc is provided with an air supply pipe that penetrates the degradation cylinder. The top of the multi-stage aeration cone disc is provided with three sets of conical disc surfaces.

[0013] Furthermore, the outer wall of the diversion injection frame is provided with several sets of wastewater pipes that penetrate the degradation cylinder, and the top center of the diversion injection frame is provided with a support sleeve that is connected to the multi-stage aeration cone disc. Several sets of injection branch pipes are arranged in a ring array between the diversion injection frame and the support sleeve.

[0014] Furthermore, a sliding shaft is provided on the bottom shaft wall of the transmission shaft to engage with the movable stirring paddle, and several sets of fixed stirring paddles are provided on the top shaft wall of the transmission shaft. A sleeve hole is provided in the center of the top cross-section of the transmission shaft.

[0015] Furthermore, the adjustable disc frame is arranged in a ring array around its outer periphery with several sets of lifting cylinders connected to the inner wall of the degradation cylinder. A traction ring frame is provided on the inner wall of the lifting cylinder. A transmission shaft sleeve is provided at the center of the bottom of the movable stirring paddle. A traction shaft sleeve is sleeved on the top of the transmission shaft sleeve. Several sets of metal support rods connected to the traction shaft sleeve are provided on the inner wall of the top of the traction ring frame. The transmission shaft sleeve is sleeved with a sliding shaft.

[0016] Furthermore, a lifting cylinder is sleeved at the bottom center of the conical inner disk, a suction frame is sleeved at the top center of the conical inner disk, a suction pipe is sleeved at the top of the suction frame, the permeation cone is sleeved on the outer edge of the conical inner disk, a fine filter cone ring is sleeved at the top of the area where the permeation cone and the conical inner disk are connected, and the bottom of the lifting cylinder is inserted into the sleeve hole.

[0017] Furthermore, a movable base is provided at the bottom of the outer side of the slag extraction adjustment frame, which is slidably sleeved with the top wall of the degradation cylinder. A rotary cylinder is provided at the top of the movable base, which faces the interior of the degradation cylinder. A discharge adjustment cylinder arm facing the bio-filtration membrane frame is sleeved at the top of the rotary cylinder. A discharge pump is provided at the top of the discharge adjustment cylinder arm, which is close to the rotary cylinder.

[0018] Furthermore, the bottom inner wall of the slag lifting beam is provided with a ring rail facing the bio-filter membrane frame assembly, the bottom of the ring rail is fitted with a sliding base, the bottom of the sliding base is slidably fitted with a slag pump, and the bottom center of the slag lifting beam is provided with a pipe groove facing the material extraction pipe.

[0019] The beneficial effects of this invention are:

[0020] 1. This invention achieves multi-point coordinated feeding by combining a diversion feeding rack with a feeding branch pipe and an adjustable feeding valve. This avoids localized sedimentation of concentrated wastewater and localized precipitation of impurities. The multi-stage aeration cone and the feeding valve work together to aerate the feeding area at specific points. Utilizing their surface structure, under the action of aeration, wastewater injection, and stirring, the precipitated impurities are carried to the slag discharge area, facilitating cleaning and optimizing feeding and aeration.

[0021] 2. This invention uses a fixed stirring paddle to stir the upper layer of the degradation cylinder, combined with a biological filter membrane frame to treat suspended solids, and a movable stirring paddle to stir the lower layer of the drive shaft. The up-and-down reciprocating motion is achieved through devices such as a sliding shaft and a lifting cylinder, which fully agitates the wastewater between the diversion injection frame and the fixed stirring paddle, accelerates the mixing of bubbles and wastewater, and makes the wastewater flow irregularly. This breaks through the regional limitations of traditional injection and aeration, promotes the cross-impact of wastewater in different areas, accelerates the flow of bubbles, impurities and suspended solids, and achieves efficient stirring and mixing.

[0022] 3. This invention utilizes a conical inner disc to increase the contact pressure between the concentrated wastewater and the permeation cone disc through a bio-filter membrane frame assembly. The permeation cone disc and the fine filter cone ring are composed of bio-filter membranes of different mesh sizes, performing primary and secondary filtration respectively, effectively intercepting suspended solids of various sizes. The purified wastewater is directionally extracted and discharged through a suction rack and extraction pipe, maintaining the continuous processing capacity of the equipment, achieving dual biological filtration.

[0023] 4. This invention allows for the installation of extraction devices on the slag extraction adjustment frame as needed. By adjusting the angle through the movable base and rotary cylinder, it can approach different areas around the bio-filter membrane frame to intercept suspended solids. The lifting cylinder can expose the wastewater in the upper area of ​​the degradation cylinder. The slag lifting beam frame rotates along the ring track through the sliding base slag extraction pump, actively cleaning the suspended solids in the outer area of ​​the suction frame, ensuring the cleanliness of the equipment interior, stable operation, and flexible slag extraction and cleaning. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a perspective view of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the internal structure of the degradation cylinder of the present invention;

[0027] Figure 3 This is a schematic diagram of the connection structure between the built-in disc frame and the degradation cylinder of the present invention;

[0028] Figure 4 This is a schematic diagram of the connection structure between the built-in disc frame and the diversion injection frame of the present invention;

[0029] Figure 5 This is a schematic diagram of the transmission shaft of the present invention;

[0030] Figure 6 This is a schematic diagram of the adjustable disc frame of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of the bio-filter membrane frame assembly of the present invention;

[0032] Figure 8 This is a schematic diagram of the slag extraction adjustment frame of the present invention;

[0033] Figure 9 This is a schematic diagram of the slag lifting beam frame of the present invention.

[0034] Attached reference numerals: 1. Degradation cylinder; 2. Slag lifting beam; 201. Ring rail; 202. Sliding base; 203. Slag pump; 3. Biofiltration membrane frame assembly; 301. Conical inner disc; 302. Permeation cone disc; 303. Fine filter cone ring; 304. Suction frame; 305. Lifting cylinder; 306. Suction pipe; 4. Slag adjusting frame; 401. Moving base; 402. Rotary cylinder; 403. Discharge pump; 404. Discharge adjusting cylinder arm 5. Built-in disc frame; 501. Slag discharge gate valve; 502. Drive motor; 503. Multi-stage aeration cone disc; 6. Diversion material injection frame; 601. Material injection branch pipe; 602. Support sleeve; 7. Adjustable disc frame; 701. Lifting cylinder; 702. Traction ring frame; 703. Movable agitator; 704. Traction bushing; 705. Transmission bushing; 8. Transmission shaft; 801. Sliding shaft; 802. Fixed agitator; 803. Sleeve hole. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1: Please refer to Figure 1 - Figure 9 As shown, this embodiment is a wheat starch concentration wastewater degradation device based on air flotation and biological treatment coupling, including a degradation cylinder 1. An internal disc frame 5 is provided on the bottom wall of the degradation cylinder 1. A multi-stage aeration cone disc 503 is provided at the top center of the internal disc frame 5. A diversion injection frame 6 connected to the inner wall of the degradation cylinder 1 is provided above the internal disc frame 5. Several sets of injection branch pipes 601 are arranged in a ring array on the inner wall of the diversion injection frame 6. A drive shaft 8 is sleeved through the middle of the multi-stage aeration cone disc 503.

[0037] The outer wall of the diversion feed rack 6 is provided with several sets of wastewater pipes that penetrate the degradation cylinder 1. The top center of the diversion feed rack 6 is provided with a support sleeve 602 that is sleeved with the multi-stage aeration cone 503. Several sets of feed branch pipes 601 are arranged in a ring array between the diversion feed rack 6 and the support sleeve 602.

[0038] During the wheat starch concentration process, the concentrated wastewater is guided into the diversion injection rack 6 through the wastewater pipe. The diversion injection rack 6 guides the concentrated wastewater to be injected into the injection branch pipe 601. At this time, the injection valves on the surface of the diversion injection rack 6 and the injection branch pipe 601 are opened as needed to perform multi-point coordinated injection into the inside of the degradation cylinder 1, avoiding the deposition of concentrated wastewater in local areas and causing impurities in the concentrated wastewater to settle in a fixed area. It should be noted that the diversion injection rack 6 and the injection branch pipe 601 are equipped with several sets of adjustable injection valves, which can be electrically controlled, but are not limited to this. The specific replacement depends on the configuration requirements of the actual device.

[0039] The built-in disc frame 5 has several sets of rectangular grooves recessed at its edge. A slag discharge gate valve 501 is slidably sleeved inside the rectangular grooves. A slag discharge port that is connected to the slag discharge gate valve 501 is provided through the bottom of the degradation cylinder 1. A drive motor 502 that is fixedly connected to the bottom outer wall of the degradation cylinder 1 is provided at the bottom of the built-in disc frame 5. The output end of the drive motor 502 is sleeved with the transmission shaft 8. An air supply pipe that penetrates the degradation cylinder 1 is provided on the outer side wall of the multi-stage aeration cone disc 503. Three sets of conical disc surfaces are provided on the top of the multi-stage aeration cone disc 503.

[0040] The built-in disc frame 5 drives the transmission shaft 8 to rotate through the drive motor 502. The multi-stage aeration cone disc 503 is connected to the external air supply equipment through the air supply pipe, and guides the gas to be diverted and injected into the interior of the multi-stage aeration cone disc 503. Several sets of aeration valves arranged on the surface of the multi-stage aeration cone disc 503 can be adjusted and opened as needed to cooperate with several sets of injection valves to perform fixed-point aeration treatment on the injection area.

[0041] Meanwhile, influenced by the surface shape and structure of the multi-stage aeration cone 503, the impurities precipitated in the concentrated wastewater are guided to slide along the surface of the multi-stage aeration cone 503 under the action of aeration, continuous injection of concentrated wastewater and multiple sets of stirring paddles. Combined with the influence of the concentrated wastewater and bubbles continuously rotating at the bottom of the degradation cylinder 1, the precipitated impurities are carried to the rectangular trough area, waiting for the slag discharge of the degradation cylinder 1. When the slag discharge gate valve 501 is opened, the accumulated precipitated impurities are instantly cleaned under the pressure of the concentrated wastewater inside the degradation cylinder 1.

[0042] Example 2: This example is a wheat starch concentration wastewater degradation device based on air flotation and biological treatment coupling, including an adjustable disc frame 7 located at the bottom of the drive shaft 8 near the diversion feed rack 6, a movable stirring paddle 703 inside the adjustable disc frame 7, and a biological filter membrane frame 3 sleeved on the top of the drive shaft 8.

[0043] The biofiltration membrane frame assembly 3 includes a conical inner disk 301 and a permeation cone disk 302. A slag extraction adjustment frame 4 is slidably sleeved on the top edge of the degradation cylinder 1. A slag lifting beam frame 2 connected to the outer wall of the degradation cylinder 1 is provided on the outside of the slag extraction adjustment frame 4.

[0044] A sliding shaft 801 is provided on the bottom shaft wall of the drive shaft 8, which is sleeved with the movable stirring paddle 703. Several sets of fixed stirring paddles 802 are provided on the top shaft wall of the drive shaft 8. A sleeve hole 803 is provided in the center of the top cross section of the drive shaft 8. The fixed stirring paddles 802 are rotated by the drive shaft 8 and are stirred in the upper area of ​​the inner cavity of the degradation cylinder 1. Accordingly, they carry the concentrated wastewater in the upper layer of the degradation cylinder 1 to rotate at a constant speed, which helps to cooperate with the biological filter membrane frame 3 to remove suspended solids and degrade the concentrated wastewater.

[0045] The adjustable disc frame 7 is arranged in a ring array around its outer periphery with several sets of lifting cylinders 701 connected to the inner wall of the degradation cylinder 1. The inner wall of the lifting cylinder 701 is provided with a traction ring frame 702. The bottom center of the movable stirring paddle 703 is provided with a drive shaft sleeve 705. The top of the drive shaft sleeve 705 is sleeved with a traction shaft sleeve 704. The top inner wall of the traction ring frame 702 is provided with several sets of metal support rods connected to the traction shaft sleeve 704. The drive shaft sleeve 705 is sleeved with the sliding shaft 801.

[0046] During the rotation of the transmission shaft 8, the sliding shaft 801 drives the movable stirring paddle 703 to rotate. The sliding shaft 801 is sleeved with the transmission shaft sleeve 705. The lifting cylinder 701 drives the traction shaft sleeve 704 to move up and down reciprocally through the traction ring frame 702. The traction shaft sleeve 704 carries the transmission shaft sleeve 705 to slide up and down along the surface of the sliding shaft 801. In this way, the movable stirring paddle 703 can perform stirring treatment in the lower area of ​​the transmission shaft 8, so as to fully agitate the concentrated wastewater between the diversion feed rack 6 and the fixed stirring paddle 802, and accelerate the full mixing and degradation treatment of the bubbles of the multi-stage aeration cone 503 with the concentrated wastewater.

[0047] Meanwhile, the movable agitator 703 drives the concentrated wastewater in this area to flow in an irregular trajectory. This not only affects the curved injection and aeration of the concentrated wastewater by the diversion feeder 6 and the multi-stage aeration cone 503, avoiding the regional limitations of the fixed injection and aeration, but also guides the concentrated wastewater in this area to intersect with the concentrated wastewater in the area pulled by the fixed agitator 802, accelerating the flow of bubbles, impurities and suspended solids in the concentrated wastewater in the intersecting area.

[0048] A lifting cylinder 305 is sleeved at the bottom center of the conical inner disc 301, a suction frame 304 is sleeved at the top center of the conical inner disc 301, a suction pipe 306 is sleeved at the top of the suction frame 304, a permeation cone 302 is sleeved on the outer edge of the conical inner disc 301, a fine filter cone ring 303 is sleeved at the top of the connection area between the permeation cone 302 and the conical inner disc 301, and the bottom of the lifting cylinder 305 is inserted into the sleeve hole 803.

[0049] The bio-filter membrane frame 3 uses the conical inner disc 301 to press the concentrated wastewater in the top area of ​​the degradation cylinder 1 downwards and inwards, thereby increasing the contact pressure between the permeation cone disc 302 and the concentrated wastewater. Both the permeation cone disc 302 and the fine filter cone ring 303 are composed of bio-filter membranes. The permeation cone disc 302 performs primary filtration of the concentrated wastewater, while the fine filter cone ring 303 performs secondary filtration. There is a difference in the mesh size of the bio-filter membranes between the two, which can be adjusted according to the actual needs of use.

[0050] During the compression and contact of the concentrated wastewater by the permeation cone 302, the concentrated wastewater permeates to the top of the permeation cone 302, intercepting large suspended solids and causing them to remain between the permeation cone 302 and the inner wall of the degradation cylinder 1. Meanwhile, the fine filter cone ring 303 performs secondary filtration on the concentrated wastewater permeating the surface of the permeation cone 302, further intercepting and retaining the fine suspended solids.

[0051] The concentrated wastewater passing through the fine filter cone ring 303 gathers around the suction rack 304. The suction rack 304 is connected to the external concentrated wastewater extraction pipe through the extraction pipe 306, so as to realize the directional extraction and discharge of the concentrated wastewater gathered around the suction rack 304, and maintain the continuous air flotation and biological coupled degradation treatment of the concentrated wastewater inside the degradation cylinder 1.

[0052] A movable base 401 is provided at the bottom of the outer side of the slag extraction adjustment frame 4, which is slidably sleeved with the top wall of the degradation cylinder 1. A rotary cylinder 402 facing the inside of the degradation cylinder 1 is provided at the top of the movable base 401. A discharge adjustment cylinder arm 404 facing the bio-filter membrane frame 3 is sleeved at the top of the rotary cylinder 402. A discharge pump 403 is provided at the top of the discharge adjustment cylinder arm 404 near the rotary cylinder 402.

[0053] According to the extraction and drug extraction, the sludge extraction adjustment frame 4 installs the required extraction device at the bottom of the discharge adjustment cylinder arm 404. The moving base 401 rotates along the top cylinder wall of the degradation cylinder 1 to adjust the angle. The rotary cylinder 402 drives the discharge adjustment cylinder arm 404 to adjust the angle up and down, which is used to carry the extraction device to approach different areas around the biofiltration membrane frame 3 to intercept suspended matter according to the extraction needs.

[0054] The bottom inner wall of the slag lifting beam 2 is provided with a ring rail 201 facing the bio-filter membrane frame 3. The bottom of the ring rail 201 is sleeved with a sliding base 202. The bottom of the sliding base 202 is slidably sleeved with a slag pump 203. The bottom center of the slag lifting beam 2 is provided with a pipe groove facing the material extraction pipe 306. The lifting cylinder 305 is activated as needed to clean the degradation cylinder 1.

[0055] The lifting cylinder 305 drives the conical inner plate 301 to slide upward, causing the concentrated wastewater in the upper area of ​​the degradation cylinder 1 to be fully exposed to the operating range of the extraction device. Meanwhile, the slag lifting beam 2 adjusts the angle by rotating the slag pump 203 along the bottom of the ring rail 201 via the sliding base 202. The bottom of the slag pump 203 is equipped with a pipe facing the area of ​​the suction frame 304, which is used to actively clean the suspended matter that has accumulated in the area outside the suction frame 304.

[0056] As can be seen from Embodiments 1 and 2, the diversion feed rack 6, in conjunction with the feed valve, achieves multi-point uniform feed, avoiding impurity deposition. The multi-stage aeration cone 503 works in synergy with the feed to facilitate the cleaning of sedimented impurities. The fixed and movable stirring paddles 703 operate in layers, accelerating the mixing of bubbles and wastewater and enhancing the treatment effect. The biological filter membrane frame 3 provides dual filtration, effectively intercepting suspended solids. The purified wastewater is discharged in a directed manner. Devices such as the sludge extraction adjustment rack 4 and the lifting cylinder 305 can flexibly clean the suspended solids intercepted in the equipment, ensuring stable operation of the equipment and achieving efficient air flotation and biological coupling treatment.

[0057] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A wheat starch concentration wastewater degradation device based on air flotation and biological treatment coupling, comprising a degradation cylinder (1), characterized in that, An internal disc frame (5) is provided on the bottom wall of the degradation cylinder (1). A multi-stage aeration cone disc (503) is provided at the top center of the internal disc frame (5). A diversion injection frame (6) connected to the inner wall of the degradation cylinder (1) is provided above the internal disc frame (5). Several sets of injection branch pipes (601) are arranged in a ring array on the inner wall of the diversion injection frame (6). A transmission shaft (8) is sleeved through the middle of the multi-stage aeration cone disc (503). The bottom of the drive shaft (8) is provided with an adjustable disc frame (7) near the diversion feed rack (6), and the adjustable disc frame (7) is provided with a movable stirring paddle (703). The top of the drive shaft (8) is fitted with a bio-filter membrane frame assembly (3). The biofiltration membrane frame assembly (3) includes a conical inner disc (301) and a permeation conical disc (302). The top edge of the degradation cylinder (1) is slidably fitted with a slag extraction adjustment frame (4). The slag extraction adjustment frame (4) is provided with a slag lifting beam frame (2) connected to the outer wall of the degradation cylinder (1) on the outside. The built-in tray (5) has a number of rectangular grooves recessed at its edge. A slag discharge gate valve (501) is slidably sleeved inside the rectangular groove. A slag discharge port that is connected to the slag discharge gate valve (501) is provided through the bottom of the degradation cylinder (1). The bottom of the built-in disc frame (5) is provided with a drive motor (502) that is fixedly connected to the bottom outer wall of the degradation cylinder (1). The output end of the drive motor (502) is sleeved with the transmission shaft (8). The side outer wall of the multi-stage aeration cone disc (503) is provided with an air supply pipe that penetrates the degradation cylinder (1). The outer wall of the diversion injection rack (6) is provided with several sets of wastewater pipes that penetrate the degradation cylinder (1). The top center of the diversion injection rack (6) is provided with a support sleeve (602) that is sleeved with the multi-stage aeration cone (503). Several sets of injection branch pipes (601) are arranged in a ring array between the diversion injection rack (6) and the support sleeve (602). The bottom shaft wall of the transmission shaft (8) is provided with a sliding shaft (801) that is sleeved with a movable stirring paddle (703). The top shaft wall of the transmission shaft (8) is provided with several sets of fixed stirring paddles (802). The center of the top cross section of the transmission shaft (8) is recessed and provided with a sleeve hole (803). A lifting cylinder (305) is sleeved at the bottom center of the conical inner disk (301), a suction rack (304) is provided at the top center of the conical inner disk (301), a suction pipe (306) is sleeved at the top of the suction rack (304), a permeation cone (302) is sleeved on the outer edge of the conical inner disk (301), and a fine filter cone ring (303) is provided at the top of the area where the permeation cone (302) connects with the conical inner disk (301).

2. The wheat starch concentration wastewater degradation equipment based on air flotation and biological treatment coupling according to claim 1, characterized in that, The adjustable disc frame (7) is arranged in a ring array around its outer periphery with several sets of lifting cylinders (701) connected to the inner wall of the degradation cylinder (1). The inner wall of the lifting cylinder (701) is provided with a traction ring frame (702). The bottom center of the movable stirring paddle (703) is provided with a transmission shaft sleeve (705). The top of the transmission shaft sleeve (705) is fitted with a traction shaft sleeve (704). The inner wall of the top of the traction ring frame (702) is provided with several sets of metal support rods connected to the traction shaft sleeve (704).

3. The wheat starch concentration wastewater degradation equipment based on air flotation and biological treatment coupling according to claim 2, characterized in that, The bottom of the outer side of the slag extraction adjustment frame (4) is provided with a movable base (401) that is slidably sleeved with the top wall of the degradation cylinder (1). The top of the movable base (401) is provided with a rotary cylinder (402) facing the inside of the degradation cylinder (1). The top of the rotary cylinder (402) is sleeved with a discharge adjustment cylinder arm (404) facing the bio-filter membrane frame group (3). The top of the discharge adjustment cylinder arm (404) is provided with a discharge pump (403) close to the rotary cylinder (402).

4. The wheat starch concentration wastewater degradation equipment based on air flotation and biological treatment coupling according to claim 3, characterized in that, The bottom inner wall of the slag lifting beam (2) is provided with a ring rail (201) facing the bio-filter membrane frame group (3). The bottom of the ring rail (201) is fitted with a sliding base (202), and the bottom of the sliding base (202) is slidably fitted with a slag pump (203).

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