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

Abstract

The invention discloses wheat starch concentration wastewater degradation equipment based on air floatation and biological treatment coupling, and belongs to the technical field of food wastewater treatment, the wheat starch concentration wastewater degradation equipment specifically comprises a degradation cylinder, a built-in plate rack is arranged on the inner bottom wall of the degradation cylinder, and a multi-stage aeration conical plate is arranged in the center of the top of the built-in plate rack; through cooperation of the split-flow material injection frame and the material injection valve, multi-point uniform material injection is achieved, impurity deposition is avoided, multi-stage aeration cone discs cooperate with material injection, precipitated impurity cleaning is facilitated, layered operation of fixed and movable stirring paddles is facilitated, mixing of bubbles and wastewater is accelerated, the treatment effect is enhanced, double filtration of the biological filter membrane frame set is achieved, suspended solids are effectively intercepted, and the treatment effect is improved. The purified wastewater is directionally discharged, and the slag pumping adjusting frame, the lifting air cylinder and other devices can flexibly clean suspended matters intercepted in the equipment, so that stable operation of the equipment is ensured, and efficient air floatation and biological coupling treatment is realized.

Description

Technical Field

[0001] The invention relates to the technical field of food wastewater treatment, in particular to wheat starch concentrated wastewater degradation equipment based on flotation and biological treatment coupling. Background Art

[0002] In today's starch production industry, wheat starch is an important product, and the problem of wastewater treatment generated during the production process is becoming increasingly prominent. From the source of wastewater, wheat starch concentrated wastewater mainly comes from key process links such as washing, filtration, and concentration in the starch processing process. These wastewaters are rich in a large amount of soluble organic pollutants, such as starch, protein, sugar, carbohydrates, fat, amino acids, etc. are all common components. They also contain a certain amount of N, P-containing inorganic compounds, as well as volatile acids, ash and other substances. Judging from its properties, wheat starch concentrated wastewater is a high-concentration organic wastewater with good biochemical properties, but due to its high ammonia nitrogen and salt content, it is difficult to treat.

[0003] Traditional treatment processes have exposed many limitations when dealing with wheat starch concentrated wastewater: In the solid-liquid separation process, conventional methods such as sedimentation are inefficient and cannot quickly and effectively separate suspended matter from wastewater, resulting in an increased load on subsequent treatment processes. For example, in treatment systems using simple sedimentation processes, the supernatant obtained from separation still contains a large amount of suspended matter, which affects the activity of microorganisms in subsequent biological treatment units. In terms of organic matter degradation, aerobic biological treatment alone consumes a lot of energy and has poor treatment effects on high-concentration wheat starch concentrate wastewater, failing to fully degrade the organic matter in the wastewater to a level that meets standards. While anaerobic biological treatment has a certain ability to degrade high-concentration organic matter, when used alone, the effluent quality still struggles to meet increasingly stringent discharge standards. In the practice of starch wastewater treatment, flotation technology can not only effectively remove suspended solids, but also reduce pollutant indicators such as COD, BOD and chroma to a certain extent. However, when flotation technology is used alone to treat wheat starch concentrated wastewater, it is still difficult to deeply filter or degrade suspended solids in the wastewater, and the wastewater cannot be finally discharged in compliance with the standards. Summary of the Invention

[0004] The purpose of the present invention is to provide a wheat starch concentrated wastewater degradation device based on flotation and biological treatment coupling to solve the problems raised.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a wheat starch concentrated wastewater degradation device based on flotation and biological treatment coupling, comprising a degradation cylinder, a built-in disc rack provided on the bottom wall of the degradation cylinder, a multi-stage aeration cone provided at the top center of the built-in disc rack, a diverter injection rack connected to the inner wall of the degradation cylinder provided above the built-in disc rack, a plurality of injection branch pipes arranged in a circular array on the inner wall of the diverter injection rack, and a transmission shaft provided through the middle of the multi-stage aeration cone; The bottom of the transmission shaft is provided with an adjustable disc rack close to the diversion injection rack, a movable stirring paddle is provided inside the adjustable disc rack, and the top of the transmission shaft is sleeved with a biological filter membrane frame group; The biological filter membrane frame group includes a conical inner disk and a permeation cone disk. The top edge of the degradation cylinder is slidably sleeved with a slag extraction adjustment frame. The outer side of the slag extraction adjustment frame is provided with a slag extraction beam frame connected to the outer wall of the degradation cylinder.

[0006] Furthermore, the edge of the built-in disc rack is recessed with several groups of rectangular grooves, and a slag discharge gate valve is slidably sleeved inside the rectangular groove. A slag discharge port that is coordinated with the slag discharge gate valve is penetrated on the bottom of the degradation cylinder.

[0007] Furthermore, a driving motor fixedly connected to the outer wall of the bottom of the degradation cylinder is provided at the bottom of the built-in disc rack, the output end of the driving motor is socketed with the transmission shaft, the outer wall of the side of the multi-stage aeration cone disc is provided with an air pipe that penetrates the degradation cylinder, and three groups of conical disc surfaces are provided on the top of the multi-stage aeration cone disc.

[0008] Furthermore, the outer wall of the diversion injection rack is provided with several groups of wastewater pipes passing through the degradation cylinder, and the top center of the diversion injection rack is provided with a support sleeve connected to the multi-stage aeration cone disc, and several groups of the injection branch pipes are arranged in a circular array between the diversion injection rack and the support sleeve.

[0009] Furthermore, a sliding shaft sleeved with a movable stirring paddle is provided on the bottom shaft wall of the transmission shaft, a plurality of groups of fixed stirring paddles are provided on the top shaft wall of the transmission shaft, and a sleeve hole is provided in the center depression of the top cross section of the transmission shaft.

[0010] Furthermore, the outer peripheral annular array of the adjustable disc rack is provided with several groups 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 sleeve is provided at the bottom center of the movable agitator, a traction sleeve is sleeved on the top of the transmission sleeve, several groups of metal support rods connected to the traction sleeve are provided on the inner wall of the top of the traction ring frame, and the transmission sleeve is sleeved on the sliding shaft.

[0011] Furthermore, a lifting cylinder is provided at the center of the bottom of the conical inner disk, a suction rack is provided at the center of the top of the conical inner disk, a suction pipe is provided at the top of the suction rack, the permeation cone disk is sleeved on the outer edge of the conical inner disk, a fine filter cone ring is provided on the top of the connection area between the permeation cone disk and the conical inner disk, and the bottom of the lifting cylinder is inserted into the sleeve hole.

[0012] Furthermore, a movable base is provided at the bottom outer side of the slag extraction adjustment frame, which is slidably connected to the top wall of the degradation cylinder. A rotary cylinder facing the inside of the degradation cylinder is provided on the top of the movable base. A discharge adjustment cylinder arm facing the biological filter membrane frame group is connected to the top of the rotary cylinder. A discharge pump close to the rotary cylinder is provided on the top of the discharge adjustment cylinder arm.

[0013] Furthermore, a ring rail facing the biological filter membrane frame group is provided on the inner wall of the bottom of the slag lifting beam, a sliding base is sleeved on the bottom of the ring rail, a slag extraction pump is slidably sleeved on the bottom of the sliding base, and a pipe groove facing the extraction pipe is provided through the center of the bottom of the slag lifting beam.

[0014] The beneficial effects of the present invention are: 1. The present invention realizes multi-point coordinated injection by combining a diverter injection rack with an injection branch pipe and an adjustable injection valve, thereby avoiding local deposition of concentrated wastewater and regional precipitation of impurities. The multi-stage aeration cone works in conjunction with the injection valve to provide fixed-point aeration in the injection area. By utilizing its surface structure, the precipitated impurities are carried to the slag discharge area under the action of aeration, wastewater injection and stirring paddles, which facilitates cleaning and optimizes injection and aeration.

[0015] 2. The present invention uses a fixed stirring paddle to stir the upper layer of the degradation cylinder cavity, cooperates with the biological filter membrane frame group to treat suspended matter, and a movable stirring paddle to stir the lower layer of the transmission shaft. The sliding shaft, lifting cylinder and other devices realize up and down reciprocating motion, fully stirring the wastewater between the diversion injection frame and the fixed stirring paddle, accelerating the mixing of bubbles and wastewater, and making the wastewater flow irregularly, breaking through the regional limitations of traditional injection and aeration, promoting the staggered impact of wastewater from different regions, accelerating the flow of bubbles, impurities and suspended matter, and efficiently stirring and mixing.

[0016] 3. The present invention uses a conical inner disk through a biological filter membrane frame group to increase the contact pressure between the concentrated wastewater and the infiltration cone disk. The infiltration cone disk and the fine filter cone ring are composed of biological filter membranes of different mesh sizes, which perform primary and secondary filtration respectively, effectively intercepting large and small suspended solids. The purified wastewater is directionally extracted and discharged through the suction rack and the extraction pipe, maintaining the continuous processing capacity of the equipment and achieving double biological filtration.

[0017] 4. The present invention is to install the extraction device according to the demand through the slag suction adjustment frame, adjust the angle by moving the base, rotating the cylinder, etc., and close to the suspended matter intercepted in different areas around the biological filter membrane frame group. The lifting cylinder can expose the wastewater in the upper area of the degradation cylinder. The slag lifting beam frame rotates along the circular track through the sliding base slag suction pump to actively clean the suspended matter in the outer area of the suction frame, ensuring the cleanliness of the equipment interior, stable operation, and flexible slag suction and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the degradation cylinder of the present invention; Figure 3 This is a schematic diagram of the connection structure between the built-in disc rack and the degradation cylinder of the present invention; Figure 4 This is a schematic diagram of the connection structure between the built-in tray and the diversion injection frame of the present invention; Figure 5 Schematic diagram of the structure of the transmission shaft of the present invention; Figure 6 It is a structural schematic diagram of the adjustable disk rack of the present invention; Figure 7 It is a structural schematic diagram of the biological filter membrane frame assembly of the present invention; Figure 8 This is a structural diagram of the slag extraction and adjustment frame of the present invention; Figure 9 It is a structural schematic diagram of the slag lifting beam frame of the present invention.

[0020] Figure numerals: 1. Degradation cylinder; 2. Slag lifting beam; 201. Ring rail; 202. Sliding base; 203. Slag extraction pump; 3. Biofilter frame assembly; 301. Conical inner disc; 302. Permeation cone disc; 303. Fine filter cone ring; 304. Suction rack; 305. Lifting cylinder; 306. Extraction pipe; 4. Slag extraction adjustment rack; 401. Mobile base; 402. Rotary cylinder; 403. Discharge pump; 404. Discharge adjustment cylinder arm ; 5. Built-in disc rack; 501. Slag discharge valve; 502. Drive motor; 503. Multi-stage aeration cone; 6. Diverter injection rack; 601. Injection branch pipe; 602. Support sleeve; 7. Adjustable disc rack; 701. Lifting cylinder; 702. Traction ring rack; 703. Movable stirring paddle; 704. Traction shaft sleeve; 705. Drive shaft sleeve; 8. Drive shaft; 801. Sliding shaft; 802. Fixed stirring paddle; 803. Casing hole. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figure 1 - Figure 9 As shown, this embodiment is a wheat starch concentrated wastewater degradation device based on the coupling of flotation and biological treatment, including a degradation cylinder 1, a built-in disc rack 5 is provided on the inner bottom wall of the degradation cylinder 1, a multi-stage aeration cone 503 is provided at the top center of the built-in disc rack 5, a diversion injection rack 6 connected to the inner wall of the degradation cylinder 1 is provided above the built-in disc rack 5, a plurality of groups of injection branches 601 are arranged in a circular array on the inner wall of the diversion injection rack 6, and a transmission shaft 8 is provided through the middle of the multi-stage aeration cone 503.

[0023] The outer wall of the diverter injection rack 6 is provided with several groups of wastewater pipes penetrating the degradation cylinder 1. The top center of the diverter injection rack 6 is provided with a support sleeve 602 which is sleeved with the multi-stage aeration cone 503. Several groups of injection branch pipes 601 are arranged in a circular array between the diverter injection rack 6 and the support sleeve 602. The concentrated wastewater generated during the wheat starch concentration process is guided into the diversion injection rack 6 through the wastewater pipe. The diversion injection rack 6 guides the concentrated wastewater to be diverted and injected into the injection branch pipe 601. At this moment, the injection valves arranged 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 on the inside of the degradation cylinder 1 to avoid the concentrated wastewater from being deposited and injected in local areas, causing the impurities in the concentrated wastewater to be precipitated in specific areas. It should be noted that the surface of the diversion injection rack 6 and the injection branch pipe 601 are provided with several groups of adjustable injection valves, which can be electrically controlled, but are not limited to this. They can be replaced according to the actual configuration needs of the device.

[0024] The edge of the built-in disc rack 5 is recessed with several groups of rectangular grooves, and a slag discharge gate valve 501 is slidably sleeved inside the rectangular groove. A slag discharge port that is coordinated with the slag discharge gate valve 501 is penetrated through the bottom cylinder of the degradation cylinder 1. A driving 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 rack 5. The output end of the driving motor 502 is sleeved with the transmission shaft 8. The outer wall of the side of the multi-stage aeration cone disc 503 is provided with an air pipe that penetrates the degradation cylinder 1, and three groups of conical disc surfaces are provided on the top of the multi-stage aeration cone disc 503.

[0025] The built-in disc frame 5 rotates by driving the transmission shaft 8 through the drive motor 502. The multi-stage aeration cone 503 is connected to the external gas supply equipment through the gas pipeline, guiding the gas diversion and injecting it into the multi-stage aeration cone 503. The multiple groups of aeration valves arranged on the surface of the multi-stage aeration cone 503 are adjusted to open as needed, and are used in coordination with the multiple groups of injection valves to perform fixed-point aeration treatment on the injection area. At the same time, affected by the surface shape structure of the multi-stage aeration cone disk 503, the impurities precipitated in the concentrated wastewater are guided to slide along the surface of the multi-stage aeration cone disk 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 that continuously rotate and flow at the bottom of the degradation cylinder 1, the precipitated impurities are entrained to the rectangular trough area, waiting for the need to discharge slag from the degradation cylinder 1, and the slag discharge gate valve 501 is opened. Under the pressure of the concentrated wastewater inside the degradation cylinder 1, the accumulated precipitated impurities are instantly cleaned.

[0026] Example 2: This example is a wheat starch concentrated wastewater degradation device based on the coupling of flotation and biological treatment, including an adjustable disc rack 7 provided at the bottom of a transmission shaft 8 near a diversion injection rack 6, a movable stirring paddle 703 provided inside the adjustable disc rack 7, and a biological filter frame assembly 3 sleeved on the top of the transmission shaft 8; The biological filter membrane frame group 3 includes a conical inner disk 301 and a permeation cone disk 302. The top edge of the degradation cylinder 1 is slidably sleeved with a slag extraction adjustment frame 4. The outside of the slag extraction adjustment frame 4 is provided with a slag extraction beam frame 2 connected to the outer wall of the degradation cylinder 1.

[0027] A sliding shaft 801 that is sleeved with the movable stirring paddle 703 is provided on the bottom shaft wall of the transmission shaft 8, and several groups of fixed stirring paddles 802 are provided on the top shaft wall of the transmission shaft 8. A sleeve hole 803 is provided in the central depression of the top cross-section of the transmission shaft 8. The fixed stirring paddle 802 is rotated by the traction of the transmission shaft 8 and stirs the upper and middle layers of the inner cavity of the degradation cylinder 1. The concentrated wastewater in the upper and middle layers of the degradation cylinder 1 is carried to rotate at a constant speed, which helps to cooperate with the biological filter membrane frame group 3 to remove suspended matter and degrade the concentrated wastewater.

[0028] A circular array is provided on the outer periphery of the adjustable disc rack 7 with several groups of lifting cylinders 701 connected to the inner wall of the degradation cylinder 1. A traction ring frame 702 is provided on the inner wall of the lifting cylinder 701. A transmission sleeve 705 is provided at the bottom center of the movable stirring paddle 703. A traction sleeve 704 is sleeved on the top of the transmission sleeve 705. Several groups of metal support rods connected to the traction sleeve 704 are provided on the inner wall of the top of the traction ring frame 702. The transmission sleeve 705 is sleeved on the sliding shaft 801.

[0029] 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 reciprocate up and down 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. Accordingly, the movable stirring paddle 703 stirs the middle and lower areas of the transmission shaft 8, promoting sufficient stirring of the concentrated wastewater between the diverter injection frame 6 and the fixed stirring paddle 802, and accelerating the thorough mixing and degradation of the bubbles in the multi-stage aeration cone 503 and the concentrated wastewater. At the same time, the movable stirring paddle 703 drives the concentrated wastewater in this area to follow an irregular flow trajectory, which can not only affect the curved injection and curved aeration of the concentrated wastewater by the diversion injection rack 6 and the multi-stage aeration cone 503, avoiding the regional limitations of the fixed transmission injection and aeration, but also guide the concentrated wastewater pulled in this area and the concentrated wastewater pulled in the fixed stirring paddle 802 area to cross-impact, thereby accelerating the flow of bubbles, impurities and suspended matter in the concentrated wastewater in the cross-region.

[0030] A lifting cylinder 305 is provided at the center of the bottom of the conical inner disk 301, a suction rack 304 is provided at the center of the top of the conical inner disk 301, a suction pipe 306 is provided at the top of the suction rack 304, the permeation cone disk 302 is sleeved on the outer edge of the conical inner disk 301, a fine filter cone ring 303 is provided at the top of the connection area between the permeation cone disk 302 and the conical inner disk 301, and the bottom of the lifting cylinder 305 is inserted into the sleeve hole 803.

[0031] The biological filter membrane frame group 3 squeezes the concentrated wastewater in the top area of the degradation cylinder 1 inward and downward through the outer shape of the conical inner disk 301, thereby increasing the contact pressure between the permeation cone disk 302 and the concentrated wastewater. The permeation cone disk 302 and the fine filter cone ring 303 are both composed of biological filter membranes. The permeation cone disk 302 performs primary filtration on the concentrated wastewater, and the fine filter cone ring 303 performs secondary filtration on the concentrated wastewater. There is a difference in the mesh size of the biological filter membranes between the two, which is adjusted according to actual usage needs.

[0032] During the period when the permeation cone 302 squeezes and contacts the concentrated wastewater, the concentrated wastewater penetrates to the top of the permeation cone 302, intercepting large suspended solids and continuously retaining them between the permeation cone 302 and the inner wall of the degradation cylinder 1. The fine filter cone ring 303 performs secondary filtration treatment on the concentrated wastewater that penetrates the surface of the permeation cone 302, further intercepting and retaining fine suspended solids therein. The concentrated wastewater passing through the fine filter cone ring 303 is collected around the suction rack 304, and 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 flotation and biological coupling degradation treatment of the concentrated wastewater inside the degradation cylinder 1.

[0033] A movable base 401 is provided at the outer bottom of the slag extraction adjustment frame 4, which is slidably connected to the top wall of the degradation cylinder 1. A rotary cylinder 402 facing the inside of the degradation cylinder 1 is provided on the top of the movable base 401. A discharge adjustment cylinder arm 404 facing the biological filter membrane frame group 3 is connected to the top of the rotary cylinder 402. A discharge pump 403 close to the rotary cylinder 402 is provided on the top of the discharge adjustment cylinder arm 404.

[0034] The slag extraction adjustment frame 4 is used to extract medicine, and the required extraction device is installed at the bottom of the discharge adjustment cylinder arm 404. The mobile base 401 is rotated along the top 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 intercept suspended matter in different areas around the biological filter membrane frame group 3 according to the extraction needs.

[0035] A ring rail 201 is provided on the inner wall of the bottom of the slag lifting beam 2, facing the biological filter frame group 3. A sliding base 202 is sleeved on the bottom of the ring rail 201, and a slag extraction pump 203 is slidably sleeved on the bottom of the sliding base 202. A pipe groove facing the extraction pipe 306 is provided through the center of the bottom of the slag lifting beam 2. The lifting cylinder 305 is started according to the cleaning needs of the degradation cylinder 1. The lifting cylinder 305 drives the conical inner disk 301 to slide upward, causing the concentrated wastewater in the upper area of the degradation cylinder 1 to be completely exposed to the operating range of the extraction device, and the slag lifting beam 2 adjusts the angle of the slag pump 203 by rotating along the bottom of the ring rail 201 through the sliding base 202. A pipe fitting facing the suction rack 304 area is provided at the bottom of the slag pump 203, which is used to actively clean up the suspended matter accumulated in the outer area of the suction rack 304.

[0036] Combining Example 1 and Example 2, it can be seen that by cooperating with the diverter injection rack 6 and the injection valve, multi-point uniform injection is achieved to avoid impurity deposition. The multi-stage aeration cone 503 cooperates with the injection to facilitate the cleaning of precipitated impurities. The fixed and movable stirring paddles 703 operate in layers to accelerate the mixing of bubbles and wastewater and enhance the treatment effect. The biological filter membrane rack group 3 performs double filtration to effectively intercept suspended matter. The purified wastewater is discharged in a direction. The slag suction adjustment rack 4, the lifting cylinder 305 and other devices can flexibly clean the suspended matter intercepted in the equipment, ensure the stable operation of the equipment, and achieve efficient flotation and biological coupling treatment.

[0037] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A wheat starch concentrated wastewater degradation device based on flotation and biological treatment coupling, comprising a degradation cylinder (1), characterized in that: A built-in disc rack (5) is provided on the inner bottom wall of the degradation cylinder (1), a multi-stage aeration cone disc (503) is provided at the top center of the built-in disc rack (5), a diversion injection rack (6) connected to the inner wall of the degradation cylinder (1) is provided above the built-in disc rack (5), a plurality of groups of injection branch pipes (601) are arranged in a circular array on the inner wall of the diversion injection rack (6), and a transmission shaft (8) is provided through the middle of the multi-stage aeration cone disc (503); The bottom of the transmission shaft (8) is provided with an adjustable disc rack (7) close to the diversion injection rack (6), a movable stirring paddle (703) is provided inside the adjustable disc rack (7), and the top of the transmission shaft (8) is sleeved with a biological filter membrane rack group (3); The biological filter membrane frame group (3) comprises a conical inner disc (301) and a permeation cone disc (302); a slag extraction adjustment frame (4) is slidably sleeved on the top edge of the degradation cylinder (1); and a slag extraction 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).

2. The wheat starch concentrated wastewater degradation equipment based on flotation and biological treatment coupling according to claim 1 is characterized in that: The edge of the built-in disc rack (5) is recessed with a plurality of rectangular grooves, and a slag discharge gate valve (501) is slidably sleeved inside the rectangular groove. A slag discharge port that is cooperatively connected to the slag discharge gate valve (501) is provided through the bottom cylinder of the degradation cylinder (1).

3. The wheat starch concentrated wastewater degradation equipment based on flotation and biological treatment coupling according to claim 2 is characterized in that: A driving motor (502) fixedly connected to the bottom outer wall of the degradation cylinder (1) is provided at the bottom of the built-in disc rack (5); an output end of the driving motor (502) is sleeved with a transmission shaft (8); and an air delivery pipe penetrating the degradation cylinder (1) is provided on the side outer wall of the multi-stage aeration cone (503).

4. The wheat starch concentrated wastewater degradation equipment based on flotation and biological treatment coupling according to claim 1 is characterized in that: The outer wall of the diverter injection rack (6) is provided with a plurality of wastewater pipes penetrating the degradation cylinder (1); the top center of the diverter injection rack (6) is provided with a support sleeve (602) sleeved with the multi-stage aeration cone (503); and a plurality of injection branch pipes (601) are arranged in a circular array between the diverter injection rack (6) and the support sleeve (602).

5. The wheat starch concentrated wastewater degradation equipment based on flotation and biological treatment coupling according to claim 1 is characterized in that: A sliding shaft (801) sleeved with a movable stirring paddle (703) is provided on the bottom shaft wall of the transmission shaft (8), a plurality of groups of fixed stirring paddles (802) are provided on the top shaft wall of the transmission shaft (8), and a sleeve hole (803) is provided in a concave center of the top cross section of the transmission shaft (8).

6. The wheat starch concentrated wastewater degradation equipment based on flotation and biological treatment coupling according to claim 1 is characterized in that: The outer peripheral annular array of the adjustable disc rack (7) is provided with a plurality of groups of lifting cylinders (701) connected to the inner wall of the degradation cylinder (1); a traction ring frame (702) is provided on the inner wall of the lifting cylinder (701); a transmission shaft sleeve (705) is provided at the bottom center of the movable stirring paddle (703); a traction shaft sleeve (704) is sleeved on the top of the transmission shaft sleeve (705); and a plurality of groups of metal support rods connected to the traction shaft sleeve (704) are provided on the inner wall of the top of the traction ring frame (702).

7. The wheat starch concentrated wastewater degradation equipment based on flotation and biological treatment coupling according to claim 1 is characterized in that: A lifting cylinder (305) is sleeved at the center of the bottom of the conical inner disk (301), a suction rack (304) is provided at the center of the top of the conical inner disk (301), a pumping pipe (306) is sleeved at the top of the suction rack (304), the permeation cone disk (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 connection area between the permeation cone disk (302) and the conical inner disk (301).

8. The wheat starch concentrated wastewater degradation equipment based on flotation and biological treatment coupling according to claim 1 is characterized in that: The outer bottom 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 biological filter frame group (3); and the top of the discharge adjustment cylinder arm (404) is provided with a discharge pump (403) close to the rotary cylinder (402).

9. The wheat starch concentrated wastewater degradation equipment based on flotation and biological treatment coupling according to claim 1 is characterized in that: A ring rail (201) facing the biological filter membrane frame group (3) is provided on the inner wall of the bottom of the slag lifting beam (2), a sliding base (202) is sleeved on the bottom of the ring rail (201), and a slag extraction pump (203) is slidably sleeved on the bottom of the sliding base (202).

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