Refined cotton bleaching wastewater treatment system

Abstract

The invention relates to the technical field of refined cotton bleaching, in particular to a refined cotton bleaching wastewater treatment system which comprises a treatment pond and a pre-removal mechanism, a left sealing plate and a right sealing plate are installed in the treatment pond, the pre-removal mechanism is installed on the left side in the treatment pond, and an adsorption frame is fixedly arranged on the right side of the right sealing plate; activated carbon particles are placed in the adsorption frame, the pre-removal mechanism comprises a treatment box and a filter box, the filter box is obliquely inserted into the treatment box, and a filter plate mounted in the filter box is used for preliminarily filtering wastewater; impurities in the wastewater can be primarily treated through a filter plate in the pre-removal mechanism so as to prevent the impurities from blocking or damaging follow-up treatment equipment, the pretreated wastewater is pumped to the center of the treatment pond through a water pumping part and a feeding box under the connection of a belt group, then a reaction reagent is fed, and the wastewater is stirred for full reaction, so that the efficiency is improved; the aeration mechanism is used for aerating the inside of the tank, so that the activity of microorganisms is improved, and the reaction cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of refined cotton bleaching, in particular to a refined cotton bleaching wastewater treatment system. Background Art

[0002] Refined cotton is a high-purity cellulose product widely used in the fields of medicine, food, and chemical industry. The current technology uses ionic liquids to prepare cellulose fibers. The cellulose used as the raw material for fiber preparation must first be crushed, which requires corresponding crushing equipment. The crushing process consumes a lot of energy and generates noise and dust, which can easily cause environmental pollution. Refined cotton has broad prospects for use. If suitable refined cotton raw materials can be selected, and a simplified process is adopted to prepare refined cotton fibers without crushing, the burden of equipment investment can be reduced, the pollution of noise and dust to the environment can be reduced, energy consumption can be reduced, and the production efficiency of cellulose fibers can be greatly improved. In the refined cotton production process, the bleaching process is a key link to remove impurities and improve the purity and whiteness of cellulose. However, this process produces a large amount of wastewater with complex composition and high pollution load, which is difficult to treat and poses a potential threat to the ecological environment that cannot be ignored. It has become a bottleneck problem restricting the green and sustainable development of the refined cotton industry.

[0003] For example, the announcement number CN101285213A discloses a method for preparing refined cotton fiber, which includes the following steps: (1) mixing refined cotton with ionic liquid, dissolving at a temperature of 60-160°C for 0.5-120 hours to obtain a uniform and stable spinning solution with a concentration of 5-35%; (2) spinning the spinning solution after filtering and degassing, wherein the coagulation bath is an ionic liquid aqueous solution with a temperature of 0-95°C and a concentration of 0-60%; the present invention does not require the cellulose crushing process in the current process, reduces equipment investment, reduces energy consumption, has less pollution to the environment, and can improve production efficiency. The refined cotton fiber of the present invention can be used as a raw material for fabrics, as well as a raw material for carbon fibers and hollow fiber membranes; The preparation method of refined cotton fiber in the prior art can meet the needs of use. However, during treatment, the wastewater contains a large amount of cotton fiber, sediment and other suspended matter, which easily causes blockage and wear of subsequent treatment equipment, increasing the maintenance cost of the equipment. At the same time, microorganisms are added to the wastewater during treatment, but refined cotton bleaching wastewater often contains a large amount of substances that are inhibitory to microorganisms, thereby reducing the treatment effect. Summary of the Invention

[0004] The purpose of the present invention is to provide a refined cotton bleaching wastewater treatment system to solve the problem of impurities in the wastewater undergoing preliminary treatment to avoid impurities clogging or damaging subsequent treatment equipment. The pretreated wastewater is pumped to the center of the treatment pool through a pumping unit and a feeding box, and then reaction reagents are added. The pool is aerated by an aeration mechanism to increase the activity of microorganisms and reduce reaction costs.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a refined cotton bleaching wastewater treatment system, comprising a treatment tank, wherein a left sealing plate and a right sealing plate are respectively installed inside the treatment tank, a pre-removal mechanism is installed on the left side of the treatment tank, an adsorption rack is fixedly provided on the right side of the right sealing plate, the pre-removal mechanism comprises a treatment box and a filter box, a filter box is obliquely installed in the treatment box, and a filter plate installed inside the filter box performs preliminary filtration on the wastewater; Preferably, a pumping part is installed on the right wall of the filter box, a fixed plate is fixed on the upper center side of the left sealing plate and the right sealing plate, and an injection mechanism is installed on the bottom side of the fixed plate. The injection mechanism includes a feeding box and a stirring paddle. The feeding box rotates with the rotating tube in the fixed plate to mix and stir after the reagent is added, and the top of the rotating tube is connected and driven by a belt group.

[0006] Preferably, an aeration mechanism is installed on the top of the fixed plate, and an aeration member for range aeration is provided inside the aeration mechanism, and the aeration member is installed on the bottom side of the center of the treatment tank for aeration.

[0007] Preferably, a water inlet pipe is installed on the central bottom side of the right sealing plate, and a solenoid valve is installed on the right side of the water inlet pipe to control the water outlet. The adsorption rack threadedly installed on the right side of the right sealing plate is easy to disassemble, and activated carbon particles are placed in the adsorption rack.

[0008] Preferably, a feed pipe is installed on the left side of the top of the processing box, and connecting blocks are fixed at the front and rear of the processing box, and the connecting blocks are fixed to the inner wall of the processing tank. The rear end of the filter box passes through the left wall of the processing tank inward and is inserted into the interior of the processing box. The filter box includes a placement rack, a filter plate and a material removal plate. The filter plate is inserted into the interior of the placement rack, and the material removal plate is fixed on the front side of the top of the filter plate.

[0009] Preferably, an inner square groove is opened inside the placement rack, side grooves are opened on both sides of the inner wall of the placement rack, a hollow square groove is opened at the rear end of the inner square groove, and the diameter of the hollow square groove is smaller than the bottom opening of the processing box.

[0010] Preferably, side blocks are fixed on both sides of the filter plate, the filter plate is installed parallel to the inside of the placement rack, a filter screen is installed on the rear side of the filter plate, and the filter screen is vertically attached to the upper side of the hollow square groove.

[0011] Preferably, a square opening is provided on the upper front end of the material taking plate, a sealing cover is installed on the square opening, and the contact position between the sealing cover and the square opening is waterproofed.

[0012] Preferably, the pumping part includes a servo motor, an auger and a water outlet pipe. The auger is installed on the right side of the treatment box, and the bottom end of the auger is installed on the left side inside the treatment tank. The auger is connected and driven by a servo motor. A water outlet pipe is provided on the right side of the top of the auger. The right side of the water outlet pipe extends to the center of the left sealing plate and the right sealing plate. A belt group is provided on the top side of the auger to connect the rotating pipe for rotation.

[0013] Preferably, the fixed plate includes a fixed bearing and a rotating tube, the fixed bearing is installed at the center of the fixed plate, the rotating tube is inserted into the center of the fixed bearing, and a discharge port is opened at the front end of the fixed plate.

[0014] Preferably, the feeding box includes an annular box, an inclined discharge pipe and a stirring paddle. An annular inner groove is provided inside the annular box. A protruding ring block is fixed at the center of the annular inner groove. A through opening is provided at the center of the protruding ring block. The center of the protruding ring block is fixed on the upper side of the center of the rotating tube. Four groups of discharge circular holes are provided on the bottom side of the annular inner groove. The bottom ends of the discharge circular holes are fixed with discharge inclined pipes. The bottom ends of the four groups of discharge inclined pipes are all inclined outward. The stirring paddle is installed on the bottom side of the center of the rotating tube.

[0015] Preferably, the aeration mechanism includes an air pump and an aeration element. An air pipe is provided at the front end of the air pump. The air pipe extends inward from the inside of the rotating tube to connect to the aeration element. A rotating sleeve is provided at the center of the air pipe. The rotating sleeve is provided on the top of the rotating tube. The aeration element includes a circular air disk and a square tube. The top center of the circular air disk is connected to the air pipe. Six groups of air outlets are provided on the inner side of the circular air disk. Square tubes are installed on the outside of the six groups of air outlets. Multiple groups of aeration nozzles are installed on the top of a single group of square tubes.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The left and right sealing plates are arranged to separate the three reaction pools to facilitate wastewater treatment. The filter plates in the pre-removal mechanism can preliminarily treat impurities in the wastewater to prevent impurities from clogging or damaging subsequent treatment equipment. The pretreated wastewater is pumped to the center of the treatment pool through the pumping unit and the feeding box connected to the belt group, and then the reaction reagents are added for stirring to fully react and improve efficiency. The aeration mechanism aerates the pool to improve the activity of microorganisms and reduce reaction costs. 2. The placement rack and the tilted design of the internal filter plate position allow the filtered impurities to flow to the front end. The impurities are then removed through the openable material removal plate, saving replacement time. The filtered wastewater is pumped to the upper side of the aeration mechanism through the auger for aeration treatment. The auger, which is connected to the rotating belt, can drive the rotating pipe to rotate, thereby driving the feeding box fixed at the bottom to rotate and feed, thereby improving the mixing effect of the reagent and wastewater, and thus improving the reaction efficiency. 3. The air pump is connected to the air pipe to supply oxygen and other gases to the aeration element to increase the activity of microorganisms in the reagent, thereby effectively improving the wastewater purification effect. The circular air disk in the aeration element is connected to multiple groups of square tubes and aeration nozzles to achieve aeration in the largest range, thereby providing sufficient oxygen for aerobic microorganisms to further decompose organic matter in the wastewater into carbon dioxide and water, while removing pollutants such as ammonia nitrogen; 4. While the above structure is designed, the water inlet pipe is controlled by the solenoid valve, and the activated carbon particles in the adsorption rack are adsorbed to further remove residual organic matter, pigments, etc. in the wastewater, thereby improving the effluent water quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 It is a schematic front view of the structure of the present invention; Figure 2 It is a front cross-sectional schematic diagram of the structure of the present invention; Figure 3 It is a side cross-sectional schematic diagram of the processing box of the present invention; Figure 4 This is a side exploded schematic diagram of the filter box of the present invention; Figure 5 This is a front cross-sectional schematic diagram of the pumping member of the present invention; Figure 6 This is a front view of the adsorption rack of the present invention; Figure 7 This is a schematic top view of the feeding box of the present invention; Figure 8 It is a schematic cross-sectional view of the aeration element structure of the present invention.

[0019] In the figure: 1. treatment tank; 11. left sealing plate; 12. right sealing plate; 121. water inlet pipe; 122. solenoid valve; 2. pre-removal mechanism; 21. treatment box; 22. feed pipe; 23. connection block; 24. filter box; 241. placement rack; 2411. inner square trough; 2412. side trough; 2413. hollow square trough; 242. filter plate; 2421. filter screen; 2422. side block; 243. take-up plate; 2431. square opening; 2432. sealing cover; 3. pumping parts; 31. servo motor; 32. auger; 33. water outlet pipe ;4. Fixed plate;41. Discharge port;42. Fixed bearing;43. Rotating tube;5. Injection mechanism;51. Feed box;511. Annular box;512. Annular inner groove;513. Protruding ring block;514. Through-hole;515. Discharge circular hole;516. Discharge inclined pipe;52. Stirring paddle;6. Aeration mechanism;61. Air pump;62. Air pipe;63. Rotating sleeve;64. Aeration element;641. Circular air disc;642. Square port;643. Square tube;644. Aeration nozzle;7. Belt group;8. Adsorption rack;81. Activated carbon granules. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figures 1-8 The present invention provides an embodiment: a refined cotton bleaching wastewater treatment system, comprising a treatment pool 1, wherein a left sealing plate 11 and a right sealing plate 12 are respectively installed inside the treatment pool 1, a pre-removal mechanism 2 is installed on the left side of the treatment pool 1, and an adsorption frame 8 is fixed to the right side of the right sealing plate 12, the pre-removal mechanism 2 comprises a treatment box 21 and a filter box 24, the filter box 24 is obliquely installed in the treatment box 21, and a filter plate 242 installed inside the filter box 24 performs preliminary filtration on the wastewater.

[0022] A feed pipe 22 is installed on the left side of the top of the processing box 21. Connecting blocks 23 are fixed to the front and rear of the processing box 21. The connecting blocks 23 are fixed to the inner wall of the processing tank 1. The rear end of the filter box 24 is inserted into the interior of the processing box 21 from the left wall of the processing tank 1. The filter box 24 includes a placement rack 241, a filter plate 242 and a material removal plate 243. The filter plate 242 is inserted into the interior of the placement rack 241, and the material removal plate 243 is fixed to the front side of the top of the filter plate 242. An inner square groove 2411 is provided inside the placement rack 241, and side grooves 2412 are provided on both sides of the inner wall of the placement rack 241. A hollow square groove 2413 is provided at the rear end of the inner square groove 2411. The diameter of the hollow square groove 2413 is smaller than the opening at the bottom end of the processing box 21. Side blocks 2422 are fixed to both sides of the filter plate 242. The filter plate 242 is mounted parallel to the interior of the placement rack 241. A filter screen 2421 is mounted on the rear side of the filter plate 242, and the filter screen 2421 fits vertically on the upper side of the hollow square groove 2413. A square opening 2431 is formed on the upper front end of the feed plate 243, and a sealing cover 2432 is installed on the square opening 2431. The contact area between the sealing cover 2432 and the square opening 2431 is waterproofed. The pre-removal mechanism can achieve preliminary treatment of impurities in the wastewater, thereby preventing impurities from clogging or damaging subsequent processing equipment.

[0023] A water inlet pipe 121 is mounted on the center bottom side of the right sealing plate 12. A solenoid valve 122 is installed on the right side of the water inlet pipe 121 to control the water flow. This facilitates the removal of the adsorption rack 8, which is threaded onto the right side of the right sealing plate 12. Activated carbon granules 81 are placed inside the adsorption rack 8. These activated carbon granules adsorb wastewater, improving its quality and meeting standards.

[0024] A pumping part 3 is installed on the right wall of the filter box 24, and a fixed plate 4 is fixed on the upper center side of the left sealing plate 11 and the right sealing plate 12. A material injection mechanism 5 is installed on the bottom side of the fixed plate 4. The material injection mechanism 5 includes a feeding box 51 and a stirring paddle 52. The feeding box 51 rotates with the rotating tube 43 in the fixed plate 4 to mix and stir after the reagent is added. The top of the rotating tube 43 is connected and driven by a belt group 7.

[0025] The pumping unit 3 includes a servo motor 31, an auger 32, and a water outlet pipe 33. The auger 32 is mounted on the right side of the treatment tank 21. The bottom end of the auger 32 is mounted on the left side of the treatment tank 1. The auger 32 is connected and driven by the servo motor 31. The water outlet pipe 33 is provided on the right side of the top of the auger 32. The right side of the water outlet pipe 33 extends to the center of the left sealing plate 11 and the right sealing plate 12. The top side of the auger 32 is provided with a belt assembly 7 connected to the rotating pipe 43 for rotation, thereby extracting wastewater and facilitating sedimentation treatment and improving efficiency.

[0026] An aeration mechanism 6 is installed on the top of the fixed plate 4. The aeration mechanism 6 includes an aeration element 64 for range aeration. The aeration element 64 is installed on the bottom side of the center of the treatment tank 1 for aeration.

[0027] The fixed plate 4 includes a fixed bearing 42 and a rotating tube 43. The fixed bearing 42 is installed in the center of the fixed plate 4, and the rotating tube 43 is inserted in the center of the fixed bearing 42. A discharge port 41 is provided at the front end of the fixed plate 4. The feeding box 51 includes an annular box 511, an inclined discharge tube 516, and a stirring paddle 52. The annular box 511 has an annular inner groove 512 formed inside. A protruding ring block 513 is fixed in the center of the annular inner groove 512. A through-hole 514 is provided in the center of the protruding ring block 513. The center of the protruding ring block 513 is fixed above the center of the rotating tube 43. Four sets of discharge circular holes 515 are provided on the bottom side of the annular inner groove 512. The bottom ends of the discharge circular holes 515 are all fixed with inclined discharge tubes 516. The bottom ends of the four sets of inclined discharge tubes 516 are all tilted outward. The stirring paddle 52 is installed on the bottom side of the center of the rotating tube 43. By achieving mixing while the reagents are rotated, the problem of low mixing efficiency is solved.

[0028] The aeration mechanism 6 includes an air pump 61 and an aeration element 64. An air pipe 62 is provided at the front end of the air pump 61. The air pipe 62 extends inward from the inside of the rotating tube 43 and connects to the aeration element 64. A rotating sleeve 63 is sleeved in the center of the air pipe 62, which is mounted on the top of the rotating tube 43. The aeration element 64 includes a circular air disc 641 and a square tube 643. The top center of the circular air disc 641 is connected to the air pipe 62. Six sets of air outlets 642 are provided on the inner side of the circular air disc 641. The outer sides of each of the six sets of air outlets 642 are installed with square tubes 643. The top of each set of square tubes 643 is equipped with multiple sets of aeration nozzles 644, which can provide sufficient oxygen for aerobic microorganisms to further decompose organic matter in the wastewater into carbon dioxide and water, while also removing pollutants such as ammonia and nitrogen.

[0029] Working principle: During operation, when wastewater treatment is required, the wastewater is first injected into the treatment box 21 through the feed pipe 22 on the left side of the treatment tank 1. After the wastewater enters, it is preliminarily filtered through the filter mesh 2421 installed on the filter plate 242 inside the central placement rack 241. The filtered wastewater falls into the treatment tank formed by the treatment tank 1 and the left side of the left sealing plate 11 through the hollow square groove 2413 opened on the bottom side, and the filtered impurities can slide to the bottom side of the front end in the inclined filter plate 242. When the wastewater is stopped from being poured in, the sealing cover 2432 in the center of the feeding plate 243 is opened to clean the impurities.

[0030] After the wastewater has been removed, the servo motor 31 can be started to drive the auger 32 on the bottom side to extract the wastewater, and then the wastewater is sent to the center position of the left sealing plate 11 and the right sealing plate 12 through the outlet pipe 33 opened on the upper side. When the wastewater is injected into the treatment pool formed by the left sealing plate 11 and the right sealing plate 12, the belt group 7 installed on the top of the auger 32 can be used to drive the rotating tube 43 installed in the center of the fixed plate 4 to rotate.

[0031] When the rotating tube 43 rotates in the fixed bearing 42, the reaction reagent can be added into the annular box 511 on the upper center side of the rotating tube 43 through the discharge port 41 at the front end of the fixed plate 4. After the reagent is added into the four groups of discharge holes 515 opened in the inner annular groove 512 of the annular box 511, it can be added into the wastewater through the discharge inclined pipe 516. When the rotating tube 43 rotates, the stirring paddle 52 fixed at the bottom can be rotated and stirred to improve the mixing efficiency.

[0032] During the reaction and sedimentation time after the reagents and wastewater are mixed and stirred, oxygen can be injected into the circular air disk 641 installed at the bottom of the treatment tank 1 through the air pump 61 through the air pipe 62, and the oxygen is sent into the square tube 643 through the six groups of air outlets 642 opened on the inner side wall of the circular air disk 641 for aeration through the aeration nozzle 644.

[0033] The wastewater after aeration treatment can be discharged through the water inlet pipe 121 controlled by the solenoid valve 122. When the wastewater between the left sealing plate 11 and the right sealing plate 12 is flush with the wastewater on the right side of the right sealing plate 12, the activated carbon particles 81 placed inside the adsorption rack 8 can be used to adsorb the wastewater for further treatment and then the wastewater can be extracted. After the wastewater is treated, the adsorption rack 8 is taken out and the bottom of the pool can be cleaned.

[0034] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A refined cotton bleaching wastewater treatment system, comprising a treatment tank (1), wherein a left sealing plate (11) and a right sealing plate (12) are respectively installed inside the treatment tank (1), characterized in that: A pre-removal mechanism (2) is installed on the left side of the treatment tank (1), and an adsorption rack (8) is fixed on the right side of the right sealing plate (12). The pre-removal mechanism (2) includes a treatment box (21) and a filter box (24). The filter box (24) is obliquely inserted into the treatment box (21), and a filter plate (242) installed inside the filter box (24) performs preliminary filtration on the wastewater. A pumping member (3) is installed on the right wall of the filter box (24), a fixed plate (4) is fixed on the upper center side of the left sealing plate (11) and the right sealing plate (12), and a material injection mechanism (5) is installed on the bottom side of the fixed plate (4), and the material injection mechanism (5) includes a feeding box (51) and a stirring paddle (52). The feeding box (51) rotates following the rotating tube (43) in the fixed plate (4) to mix and stir after the reagent is added, and the top end of the rotating tube (43) is connected and driven by a belt group (7); An aeration mechanism (6) is installed at the top of the fixed plate (4), and an aeration element (64) for range aeration is provided inside the aeration mechanism (6). The aeration element (64) is installed at the bottom side of the center of the treatment tank (1) for aeration.

2. A refined cotton bleaching wastewater treatment system according to claim 1, characterized in that: A water inlet pipe (121) is installed on the central bottom side of the right sealing plate (12), and a solenoid valve (122) is installed on the right side of the water inlet pipe (121) to control water outlet. The adsorption rack (8) is threadedly installed on the right side of the right sealing plate (12) for easy disassembly, and activated carbon particles (81) are placed in the adsorption rack (8).

3. A refined cotton bleaching wastewater treatment system according to claim 1, characterized in that: A feed pipe (22) is installed on the left side of the top of the processing box (21), and connecting blocks (23) are fixedly provided at the front and rear of the processing box (21). The connecting blocks (23) are fixedly provided on the inner wall of the processing tank (1). The rear end of the filter box (24) passes through the left wall of the processing tank (1) and is inserted into the interior of the processing box (21). The filter box (24) includes a placement rack (241), a filter plate (242) and a material removal plate (243). The filter plate (242) is inserted into the interior of the placement rack (241), and the material removal plate (243) is fixedly provided on the front side of the top of the filter plate (242).

4. A refined cotton bleaching wastewater treatment system according to claim 3, characterized in that: An inner square groove (2411) is provided inside the placement rack (241), side grooves (2412) are provided on both sides of the inner wall of the placement rack (241), and a hollow square groove (2413) is provided at the rear end of the inner square groove (2411), wherein the diameter of the hollow square groove (2413) is smaller than the bottom opening of the processing box (21).

5. A refined cotton bleaching wastewater treatment system according to claim 1, characterized in that: Side blocks (2422) are fixed on both sides of the filter plate (242). The filter plate (242) is installed parallel to the inside of the placement rack (241). A filter screen (2421) is installed on the rear side of the inside of the filter plate (242). The filter screen (2421) is vertically attached to the upper side of the hollow square groove (2413).

6. A refined cotton bleaching wastewater treatment system according to claim 3, characterized in that: A square opening (2431) is provided on the upper front end of the material taking plate (243), a sealing cover (2432) is installed on the square opening (2431), and the contact position between the sealing cover (2432) and the square opening (2431) is waterproofed.

7. A refined cotton bleaching wastewater treatment system according to claim 1, characterized in that: The pumping member (3) comprises a servo motor (31), an auger (32) and a water outlet pipe (33). The auger (32) is installed on the right side of the treatment box (21). The bottom end of the auger (32) is installed on the left side inside the treatment tank (1). The auger (32) is connected and driven by the servo motor (31). The water outlet pipe (33) is provided on the right side of the top end of the auger (32). The right side of the water outlet pipe (33) extends to the center of the left sealing plate (11) and the right sealing plate (12). The top side of the auger (32) is provided with a belt group (7) connected to the rotating pipe (43) for rotation.

8. The refined cotton bleaching wastewater treatment system according to claim 1, characterized in that: The fixed plate (4) comprises a fixed bearing (42) and a rotating tube (43); the fixed bearing (42) is installed at the center of the fixed plate (4); the rotating tube (43) is inserted into the center of the fixed bearing (42); and a discharge port (41) is opened at the front end of the fixed plate (4).

9. The refined cotton bleaching wastewater treatment system according to claim 1, characterized in that: The feeding box (51) includes an annular box (511), an inclined discharge tube (516) and a stirring paddle (52). An annular inner groove (512) is provided inside the annular box (511). A protruding ring block (513) is fixed at the center of the annular inner groove (512). A through opening (514) is provided at the center of the protruding ring block (513). The center of the protruding ring block (513) is fixed on the upper side of the center of the rotating tube (43). Four groups of discharge circular holes (515) are provided on the bottom side of the annular inner groove (512). The bottom ends of the discharge circular holes (515) are all fixed with inclined discharge tubes (516). The bottom ends of the four groups of inclined discharge tubes (516) are all inclined outward. The stirring paddle (52) is installed on the bottom side of the center of the rotating tube (43).

10. The refined cotton bleaching wastewater treatment system according to claim 1, characterized in that: The aeration mechanism (6) includes an air pump (61) and an aeration element (64). An air delivery pipe (62) is provided at the front end of the air pump (61). The air delivery pipe (62) extends inward from the inside of the rotating tube (43) to connect to the aeration element (64). A rotating sleeve (63) is sleeved at the center of the air delivery pipe (62). The rotating sleeve (63) is sleeved on the top of the rotating tube (43). The aeration element (64) includes a circular air disc (641) and a square tube (643). The top center of the circular air disc (641) is connected to the air delivery pipe (62). Six groups of air outlets (642) are provided on the inner side of the circular air disc (641). Square tubes (643) are installed on the outer sides of the six groups of air outlets (642). Multiple groups of aeration nozzles (644) are installed at the top of each group of square tubes (643).

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