Preparation device and preparation method of sewage denitrification composite carbon source

Abstract

The invention discloses a preparation device and a preparation method of a sewage denitrification composite carbon source, and the preparation device comprises a mixing bin, and also comprises a stirring mechanism arranged in the mixing bin; the first discharging mechanism and the second discharging mechanism are arranged at the bottom end of the mixing bin at the same time; the stirring mechanism comprises a first fulcrum shaft, a second fulcrum shaft and a third fulcrum shaft, the two ends of the second fulcrum shaft are inserted into the inner walls of the first fulcrum shaft and the third fulcrum shaft respectively, the top end of the first fulcrum shaft is fixedly connected with the output end of a motor, the motor is fixedly installed on the outer wall of the top end of the mixing bin, and the third fulcrum shaft is rotationally connected to the inner wall of the bottom end of the mixing bin; the cavity is arranged in the fulcrum shaft I, and a gas rod is fixedly connected in the cavity. According to the preparation device and the preparation method of the sewage denitrification composite carbon source disclosed by the invention, the pushing amount of single-time sludge can be increased by a larger contact area, the number of times of repeated operation is directly reduced, meanwhile, the local accumulation or backflow phenomenon is reduced, and secondary pollution after cleaning is avoided; the sludge treatment efficiency is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage denitrification, and in particular to a device and method for preparing a composite carbon source for sewage denitrification. Background Art

[0002] Wastewater denitrification is the process of removing nitrogen from wastewater to prevent eutrophication. Biological denitrification is a common method of denitrification, often using a composite carbon source to increase the speed and effectiveness of wastewater treatment.

[0003] Currently, the preparation of composite biocarbon source agents produces a significant amount of solid impurities, leaving a significant amount of sludge on the inner walls of the preparation vessel, particularly at the bottom. Sludge is typically cleaned using a rotating scraper installed at the bottom of the vessel. However, to minimize mixing, the scraper is positioned relatively low. However, since sludge can be tens of centimeters to several meters thick, this excess sludge can backflow during cleaning, leading to secondary contamination and hindering treatment efficiency. Summary of the Invention

[0004] The present invention discloses a preparation device and method for a composite carbon source for denitrification of sewage, aiming to solve the technical problem that, due to the sludge thickness reaching tens of centimeters to several meters, the excess sludge will reflux during the cleaning process, causing secondary pollution and preventing the treatment efficiency from being improved.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A preparation device for a composite carbon source for denitrification of sewage, comprising a mixing chamber, and further comprising: a stirring mechanism disposed in the mixing chamber; a first feeding mechanism and a second feeding mechanism, both disposed at the bottom end of the mixing chamber;

[0007] The stirring mechanism comprises: a support shaft one, a support shaft two and a support shaft three, and the two ends of the support shaft two are respectively inserted into the inner walls of the support shaft one and the support shaft three, the top end of the support shaft one is fixedly connected to the output end of the motor, and the motor is fixedly installed on the top outer wall of the mixing bin, and the support shaft three is rotatably connected to the bottom inner wall of the mixing bin; a cavity is arranged in the support shaft one, and a gas rod is fixedly connected in the cavity, and the output end of the gas rod is fixedly connected to the top end of the support shaft two; a plurality of push plates one and two are hinged to each other, and the top end of each push plate one is hingedly connected to a top frame, a plurality of top frames are equidistantly fixedly connected to the circumferential outer wall of the support shaft two, the bottom end of each push plate two is hingedly connected to a bottom frame, and a plurality of bottom frames are equidistantly fixedly connected to the circumferential outer wall of the support shaft three, and a brush is fixedly installed on the bottom end of each bottom frame; a plurality of stirring blades are equidistantly fixedly connected to the circumferential outer walls of the support shaft one and the support shaft two;

[0008] The stirring mechanism also includes: a slide groove 1, which is arranged on the inner wall of the bottom end of the support shaft 1, and a slider 1 is symmetrically fixedly connected to the top circumferential outer wall of the support shaft 2, and the slider 1 is movably engaged in the slide groove 1; a sealing ring 1, which is fixedly connected to the inner wall of the bottom end of the support shaft 1 and movably wrapped around the circumferential outer wall of the support shaft 2.

[0009] By providing a stirring mechanism, during the mixing process, the push plate one and the push plate two can be bent to reduce the angle of the bending angle by extending the air rod. At the same time, since sludge will gradually be generated during the preparation process and will accumulate at the bottom of the mixing bin, the shearing capacity of the push plate forming a triangular structure is enhanced, which is more suitable for mixing sludge parts. After the stirring is completed and the mixed liquid is discharged, during the sludge discharge process, the push plate one and the push plate two can be unfolded to raise the overall height, that is, the contact area can be larger to increase the amount of sludge pushed in a single time, directly reducing the number of repeated operations, while reducing local accumulation or backflow, avoiding secondary pollution after cleaning, and effectively improving the sludge treatment efficiency.

[0010] In a preferred embodiment, the stirring mechanism further comprises:

[0011] The second chute is provided on the inner wall of the top end of the support shaft 3, and the outer wall of the bottom circumference of the support shaft 2 is symmetrically fixedly connected with the second slider, and the second slider is movably engaged in the second chute;

[0012] The sealing ring 3 is fixedly connected to the inner wall of the top end of the support shaft 3 and movably wrapped around the outer wall of the circumference of the support shaft 2;

[0013] The second sealing ring is arranged between the inner wall of the mixing chamber and the support shaft 3;

[0014] In a preferred embodiment, the second unloading mechanism includes: a slider 1, fixedly connected to the outer wall of one side of the discharge pipe 1; a transverse guide rail, fixedly connected to the outer wall of the bottom end of the mixing bin, and the slider 1 is movably connected to the transverse guide rail, and the transverse guide rail is also movably connected to the slider 2; the discharge pipe 3 is fixedly connected to the slider 2, and the outer wall of the top end thereof is movably attached to the outer wall of the bottom end of the funnel; and a connecting rod, the two ends of which are respectively fixedly connected to the discharge pipe 3 and the discharge pipe 1;

[0015] By providing a second discharge mechanism, after the liquid discharge is completed, when the sludge is specially cleaned, the discharge pipe three can be connected to the bottom end of the funnel by translation. Thus, when a large amount of sludge passes through the discharge port, it can be discharged directly through the discharge pipe three. The absence of an inclined grid plate can avoid blockage during the falling process, thereby ensuring smooth sludge discharge.

[0016] In a preferred embodiment, the bottom end of the mixing bin is fixedly connected to a plurality of bases, and a discharge port is provided through the bottom end of the mixing bin, the outer wall of the bottom end of the discharge port is fixedly connected to a funnel, and a valve is fixedly installed on the funnel, a plurality of spring buckles are fixedly installed at equal intervals on the outer circumference of the funnel, and a sealing gasket is fixedly attached to the outer wall of the bottom end of the funnel;

[0017] The first discharge mechanism includes: a discharge pipe 1, which is movably attached to the outer wall of the bottom end of the funnel; a slanted grid plate, which is fixedly connected to the inner wall of the discharge pipe 1, and the outer wall of the top end of the slanted grid plate is covered with a filter screen; an extension pipe 1, which is fixedly connected to the inner wall of one side of the discharge pipe 1 at an oblique direction;

[0018] The first unloading mechanism also includes: a supporting cavity, which is fixedly connected to the end of the extension tube 1, and the inner wall of the bottom end of the supporting cavity is obliquely fixedly connected to the discharge tube 2; a cloth bag, which is movably fitted to the inner wall of the supporting cavity, and the opening is connected to the extension tube 1.

[0019] By providing a first discharge mechanism, when the valve is opened to discharge the internal mixed liquid, part of the sludge at the bottom will leak out at the same time as the sewage is discharged. At this time, it is filtered and guided by the inclined grid and the filter screen, so that the sludge passes through the extension pipe 1 and enters the cloth bag in the support cavity for temporary storage. The internal liquid can be discharged along the discharge pipe 2, thereby completing the sludge filtration simultaneously during the discharge process and reducing the probability of blockage. At the same time, when cleaning the sludge in the support cavity, the support cavity can be opened to detach the cloth bag, thereby completing the overall cleaning of the sludge and reducing the difficulty of cleaning.

[0020] In a preferred embodiment, the method comprises the following specific steps:

[0021] S1: Add raw materials into the mixing bin and control the raw material ratio during the process;

[0022] S2: The air rod extends, reducing the inner angle between push plate 1 and push plate 2, and then the motor drives support shaft 1, support shaft 2 and support shaft 3 to rotate for stirring;

[0023] S3: After mixing, the funnel and discharge pipe 1 are connected through a spring buckle, and the liquid is discharged and the sludge is filtered at the same time;

[0024] S4: After the discharge is completed, open the spring buckle, switch the discharge pipe three by translation, and connect the funnel and discharge pipe three by the spring buckle;

[0025] S5: The air rod retracts, and push plate 1 and push plate 2 are unfolded. Push plates 1 and 2 are driven by the motor to rotate to clean the sludge.

[0026] As can be seen from the above, a preparation device for a composite carbon source for denitrification of sewage includes a mixing bin and also includes: a stirring mechanism, which is arranged in the mixing bin; a first feeding mechanism and a second feeding mechanism, which are simultaneously arranged at the bottom end of the mixing bin; the stirring mechanism includes: a support shaft 1, a support shaft 2 and a support shaft 3, and the two ends of the support shaft 2 are respectively inserted into the inner walls of the support shaft 1 and the support shaft 3, the top end of the support shaft 1 is fixedly connected to the output end of the motor, and the motor is fixedly installed on the top outer wall of the mixing bin, and the support shaft 3 is rotatably connected to the bottom inner wall of the mixing bin; a cavity is arranged at A gas rod is fixedly connected to the cavity of support shaft one, and the output end of the gas rod is fixedly connected to the top of support shaft two; multiple push plates one and two are hinged to each other, and the top of each push plate one is hinged to a top frame, multiple top frames are fixedly connected to the circumferential outer wall of support shaft two at equal intervals, and the bottom end of each push plate two is hinged to a bottom frame, and multiple bottom frames are fixedly connected to the circumferential outer wall of support shaft three at equal intervals, and a brush is fixedly installed on the bottom end of each bottom frame; multiple stirring blades are fixedly connected to the circumferential outer walls of support shaft one and support shaft two at equal intervals. The preparation device and preparation method of the composite carbon source for sewage denitrification provided by the present invention can increase the amount of sludge pushed in a single time with a larger contact area, directly reduce the number of repeated operations, and at the same time reduce local accumulation or backflow phenomena, avoid secondary pollution after cleaning, and effectively improve the sludge treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of a device for preparing a composite carbon source for denitrification of sewage proposed by the present invention.

[0028] Figure 2 This is a schematic diagram of the disassembly of the stirring mechanism of the device for preparing a composite carbon source for denitrification of sewage proposed by the present invention.

[0029] Figure 3 This is a schematic diagram of the partial disassembly of the stirring mechanism of a device for preparing a composite carbon source for denitrification of sewage proposed by the present invention.

[0030] Figure 4 This is a structural schematic diagram of the second feeding mechanism of a device for preparing a composite carbon source for denitrification of sewage proposed by the present invention.

[0031] Figure 5 This is a schematic diagram of the disassembly of the first feeding mechanism of the device for preparing a composite carbon source for denitrification of sewage proposed in the present invention.

[0032] Figure 6 This is a specific flow chart of the preparation method of a device for preparing a composite carbon source for denitrification of sewage proposed by the present invention.

[0033] In the figure: 1. Mixing bin; 2. Base; 3. First discharge mechanism; 4. Second discharge mechanism; 5. Stirring mechanism; 6. Discharge port; 7. Funnel; 8. Valve; 9. Sealing gasket; 10. Spring buckle; 301. Filter screen; 302. Inclined grid plate; 303. Discharge pipe 1; 304. Extension pipe 1; 305. Support chamber; 306. Cloth bag; 307. Discharge pipe 2; 402. Discharge pipe 3; 403. Connecting rod; 404. Horizontal guide rail; 405. Slider 1; 406, slider 2; 501, motor; 502, support shaft 1; 503, cavity; 504, slide 1; 505, gas rod; 506, slider 1; 507, seal ring 1; 508, support shaft 2; 509, slider 2; 510, slide 2; 511, support shaft 3; 512, seal ring 2; 513, seal ring 3; 514, stirring fan blade; 515, top frame; 516, push plate 1; 517, push plate 2; 518, bottom frame; 519, brush. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] The present invention discloses a device and method for preparing a composite carbon source for denitrification of sewage, which are mainly used in the scenario of preparing a composite carbon source.

[0036] Reference Figure 1-Figure 3 A device for preparing a composite carbon source for denitrification of sewage, comprising a mixing chamber 1, and further comprising:

[0037] A stirring mechanism 5 is provided in the mixing chamber 1;

[0038] The first unloading mechanism 3 and the second unloading mechanism 4 are both arranged at the bottom end of the mixing bin 1;

[0039] The stirring mechanism 5 comprises:

[0040] Support shaft 1 502, support shaft 2 508 and support shaft 3 511, and the two ends of support shaft 2 508 are respectively inserted into the inner walls of support shaft 1 502 and support shaft 3 511, the top of support shaft 1 502 is fixedly connected to the output end of motor 501, and motor 510 is fixedly installed on the top outer wall of mixing bin 1, and support shaft 3 511 is rotatably connected to the bottom inner wall of mixing bin 1;

[0041] The cavity 503 is provided in the support shaft 1 502 , and the gas rod 505 is fixedly connected in the cavity 503 , and the output end of the gas rod 505 is fixedly connected to the top end of the support shaft 2 508 ;

[0042] Multiple push plates 1 516 and push plates 2 517 are hinged to each other, and the top of each push plate 1 516 is hinged with a top frame 515, and multiple top frames 515 are equidistantly fixedly connected to the circumferential outer wall of the support shaft 2 508. The bottom end of each push plate 2 517 is hinged with a bottom frame 518, and multiple bottom frames 518 are equidistantly fixedly connected to the circumferential outer wall of the support shaft 3 511. A brush 519 is fixedly installed at the bottom end of each bottom frame 518. During the mixing process, the support shaft 2 508 can be driven to move downward along the slide 1 504 and the slide 2 510 by extending the air rod 505. The plurality of top frames 515 are driven to move downward. Based on the hinged structure of the push plate 1 516 and the push plate 2 517, when the top frame 515 moves downward and the height of the bottom frame 518 remains unchanged, the push plates 1 516 and the push plates 2 517 are bent to reduce the overall height and reduce the bending angle. At the same time, since sludge will gradually be generated and accumulated at the bottom of the mixing bin 1 during the preparation process, the consistency of the bottom of the mixing bin 1 will be much higher than that of the liquid in the upper part. The shearing ability of the push plates forming the triangular structure is enhanced, which is more suitable for mixing sludge parts. The brush 519 can clean the bottom of the mixing bin 1.

[0043] A plurality of stirring blades 514 are fixedly connected to the circumferential outer walls of the first support shaft 502 and the second support shaft 508 at equal intervals.

[0044] Reference Figure 2 In a preferred embodiment, the stirring mechanism 5 further comprises:

[0045] Slide groove 1 504 is provided on the inner wall of the bottom end of support shaft 1 502 . Slide block 1 506 is symmetrically fixedly connected to the outer wall of the top circumference of support shaft 2 508 , and slide block 1 506 is movably engaged in slide groove 1 504 .

[0046] The sealing ring 1 507 is fixedly connected to the inner wall of the bottom end of the support shaft 1 502 and movably wrapped around the circumferential outer wall of the support shaft 2 508 .

[0047] Reference Figure 2 In a preferred embodiment, the stirring mechanism 5 further comprises:

[0048] The second chute 510 is provided on the top inner wall of the third support shaft 511. The second slider 509 is symmetrically fixedly connected to the outer wall of the bottom circumference of the second support shaft 508, and the second slider 509 is movably engaged in the second chute 510.

[0049] The third sealing ring 513 is fixedly connected to the inner wall of the top end of the third support shaft 511 and movably wrapped around the outer wall of the circumference of the second support shaft 508;

[0050] The sealing ring 2 512 is arranged between the inner wall of the mixing chamber 1 and the support shaft 3 511. After the stirring is completed and the mixed liquid is discharged, during the sludge discharge process, the push plate 1 516 and the push plate 2 517 can be expanded by retracting the air rod 505 to raise the overall height, that is, the contact area can be larger to increase the amount of sludge pushed in a single time, directly reducing the number of repeated operations, while reducing local accumulation or backflow, avoiding secondary pollution after cleaning, and effectively improving the sludge treatment efficiency.

[0051] Reference Figure 1-Figure 5 In a preferred embodiment, the bottom end of the mixing bin 1 is fixedly connected to a plurality of bases 2, and a discharge port 6 is provided through the bottom end of the mixing bin 1, the outer wall of the bottom end of the discharge port 6 is fixedly connected to a funnel 7, and a valve 8 is fixedly installed on the funnel 7, a plurality of spring clips 10 are fixedly installed at equal intervals on the outer periphery of the funnel 7, and a sealing gasket 9 is fixedly fitted to the outer wall of the bottom end of the funnel 7.

[0052] Reference Figure 5 In a preferred embodiment, the first blanking mechanism 3 includes:

[0053] A discharge pipe 303 is movably fitted to the outer wall of the bottom end of the funnel 7;

[0054] The inclined grating 302 is fixedly connected to the inner wall of the discharge pipe 303, and the outer wall of the top of the inclined grating 302 is covered with a filter 301. When the valve 8 is opened to discharge the internal mixed liquid, some sludge at the bottom will be discharged along with the sewage. At this time, the inclined grating 302 serves as an oblique support, and the filter 301 laid above can filter out the sludge in the sewage.

[0055] The extension pipe 304 is fixedly connected to the inner wall of one side of the discharge pipe 303 in an oblique direction.

[0056] Reference Figure 5 In a preferred embodiment, the first blanking mechanism 3 further includes:

[0057] The support cavity 305 is fixedly connected to the end of the extension tube 1 304, and the inner wall of the bottom end of the support cavity 305 is fixedly connected to the discharge pipe 2 307 in an oblique direction;

[0058] The cloth bag 306 is movably fitted to the inner wall of the support cavity 305, and its opening is connected to the extension tube 1 304. When the sludge accumulates to a certain extent, it is guided by the inclined grid plate 302 to pass through the extension tube 1 304 and enter the cloth bag 306 in the support cavity 305 for temporary storage. During the storage process, under the action of gravity, the mixed liquid inside the sludge will gradually separate from the sludge from the bottom and be discharged along the discharge pipe 2 307. Based on the oblique setting of the discharge pipe 2 307, the discharged mixed liquid and the mixed liquid discharged from the discharge pipe 1 303 can enter the same container at the same time, thereby completing the sludge filtration synchronously during the discharge process and reducing the probability of blockage. At the same time, when cleaning the sludge in the support cavity 305, the support cavity 305 can be opened to detach the cloth bag 306, thereby completing the overall cleaning of the sludge and reducing the difficulty of cleaning.

[0059] Reference Figure 4 and Figure 5 In a preferred embodiment, the second blanking mechanism 4 includes:

[0060] Slider 1 405 is fixedly connected to the outer wall of one side of discharge pipe 1 303;

[0061] A transverse guide rail 404 is fixedly connected to the outer wall of the bottom end of the mixing chamber 1, and a slider 1 405 is movably connected to the transverse guide rail 404, and a slider 2 406 is also movably connected to the transverse guide rail 404;

[0062] The third discharge pipe 402 is fixedly connected to the second slider 406, and its top outer wall is movably fitted to the bottom outer wall of the funnel 7;

[0063] The connecting rod 403 has two ends fixedly connected to the discharge pipe three 402 and the discharge pipe one 303 respectively. After the drainage is completed, when the sludge is specially cleaned, the first unloading mechanism 3 can be translated to make the discharge pipe three 402 move to the bottom end of the funnel 7. Based on the setting of the connecting rod 403, the installation position of the discharge pipe three 402 can be assisted to determine the installation position of the discharge pipe three 402, and then the spring clip 10 is tightened. Based on the setting of the sealing gasket 9, the tight connection between the discharge pipe three 402 and the funnel 7 can be guaranteed. Therefore, when a large amount of sludge passes through the discharge port 6, it can be discharged directly through the discharge pipe three 402. The absence of the obstruction of the inclined grid plate 302 can avoid blockage during the falling process, thereby ensuring smooth sludge discharge.

[0064] Reference Figure 6 A method for preparing a composite carbon source for denitrification of sewage comprises the following specific steps:

[0065] S1: Add raw materials into mixing bin 1 and control the raw material ratio during the process;

[0066] S1: The air rod 505 extends, reducing the inner angle between the push plate 1 516 and the push plate 2 517, and then the motor 501 drives the support shaft 1 502, the support shaft 2 508 and the support shaft 3 511 to rotate for stirring;

[0067] S2: After the mixing is completed, the funnel 7 and the discharge pipe 303 are connected through the spring buckle 10, and the liquid is discharged and the sludge is filtered at the same time;

[0068] S3: After the discharge is completed, the spring buckle 10 is opened, the discharge pipe 3 402 is switched to use by translation, and the funnel 7 and the discharge pipe 3 402 are connected through the spring buckle 10;

[0069] S4: The air rod 505 retracts, and the push plate 1 516 and the push plate 2 517 are unfolded. The motor 501 drives the push plate 1 516 and the push plate 2 517 to rotate to clean the sludge.

[0070] Working principle: During the mixing process, the extension of the air rod 505 can drive the support shaft 2 508 to move down along the chute 1 504 and the chute 2 510, which can drive multiple top frames 515 to move down. Based on the hinged structure of the push plate 1 516 and the push plate 2 517, when the top frame 515 moves down and the height of the bottom frame 518 remains unchanged, the push plate 1 516 and the push plate 2 517 are bent to reduce the overall height and reduce the angle of the bending angle. At the same time, based on the sludge gradually generated during the preparation process, it will accumulate at the bottom of the mixing bin 1, resulting in the mixing bin The viscosity of the bottom portion will be much higher than that of the liquid in the upper portion. The shearing capacity of the push plate forming the triangular structure is enhanced, and it is more suitable for mixing sludge parts. After the stirring is completed and the mixed liquid is discharged, during the sludge discharge process, the push plate 1 516 and the push plate 2 517 can be expanded by retracting the air rod 505 to raise the overall height, that is, the contact area can be larger to increase the amount of sludge pushed in a single time, directly reducing the number of repeated operations, while reducing local accumulation or backflow, avoiding secondary pollution after cleaning, and effectively improving the sludge treatment efficiency.

[0071] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A device for preparing a composite carbon source for denitrification of sewage, comprising a mixing chamber (1), characterized in that: Also includes: A stirring mechanism (5) is arranged in the mixing chamber (1); The first unloading mechanism (3) and the second unloading mechanism (4) are both arranged at the bottom end of the mixing bin (1); The stirring mechanism (5) comprises: Support shaft one (502), support shaft two (508) and support shaft three (511), and the two ends of support shaft two (508) are respectively inserted into the inner walls of support shaft one (502) and support shaft three (511), the top end of support shaft one (502) is fixedly connected to the output end of motor (501), and motor (510) is fixedly installed on the top outer wall of mixing bin (1), and support shaft three (511) is rotatably connected to the bottom inner wall of mixing bin (1); The cavity (503) is arranged in the first support shaft (502), and a gas rod (505) is fixedly connected in the cavity (503), and the output end of the gas rod (505) is fixedly connected to the top end of the second support shaft (508); A plurality of push plates (516) and push plates (517) are hinged to each other, and the top of each push plate (516) is hinged to a top frame (515), and the top frames (515) are fixedly connected to the circumferential outer wall of the support shaft (508) at equal intervals. The bottom of each push plate (517) is hinged to a bottom frame (518), and the bottom frames (518) are fixedly connected to the circumferential outer wall of the support shaft (511) at equal intervals. A brush (519) is fixedly installed at the bottom of each bottom frame (518); A plurality of stirring blades (514) are fixedly connected to the circumferential outer walls of the first support shaft (502) and the second support shaft (508) at equal intervals.

2. The preparation device of a composite carbon source for denitrification of sewage according to claim 1, characterized in that: The stirring mechanism (5) further comprises: Slide groove 1 (504) is arranged on the inner wall of the bottom end of support shaft 1 (502), and the top circumferential outer wall of support shaft 2 (508) is symmetrically fixedly connected with slider 1 (506), and slider 1 (506) is movably engaged in slide groove 1 (504); The sealing ring 1 (507) is fixedly connected to the inner wall of the bottom end of the support shaft 1 (502) and movably wrapped around the circumferential outer wall of the support shaft 2 (508).

3. The preparation device of a composite carbon source for denitrification of sewage according to claim 2, characterized in that: The stirring mechanism (5) further comprises: The second slide groove (510) is arranged on the inner wall of the top end of the third support shaft (511), and the outer wall of the bottom circumference of the second support shaft (508) is symmetrically fixedly connected with the second slider (509), and the second slider (509) is movably engaged in the second slide groove (510); The sealing ring 3 (513) is fixedly connected to the top inner wall of the support shaft 3 (511) and movably wrapped around the circumferential outer wall of the support shaft 2 (508); The second sealing ring (512) is arranged between the inner wall of the mixing chamber (1) and the third support shaft (511).

4. The device for preparing a composite carbon source for denitrification of sewage according to claim 1, characterized in that: The bottom end of the mixing bin (1) is fixedly connected to a plurality of bases (2), and a discharge port (6) is provided through the bottom end of the mixing bin (1), a funnel (7) is fixedly connected to the outer wall of the bottom end of the discharge port (6), and a valve (8) is fixedly installed on the funnel (7), a plurality of spring clips (10) are fixedly installed at equal intervals on the outer periphery of the funnel (7), and a sealing gasket (9) is fixedly attached to the outer wall of the bottom end of the funnel (7).

5. The device for preparing a composite carbon source for denitrification of sewage according to claim 4, characterized in that: The first blanking mechanism (3) comprises: A discharge pipe (303) is movably fitted to the outer wall of the bottom end of the funnel (7); The inclined grid plate (302) is fixedly connected to the inner wall of the discharge pipe (303), and the outer wall of the top end of the inclined grid plate (302) is covered with a filter screen (301); Extension pipe 1 (304) is fixedly connected to the inner wall of one side of discharge pipe 1 (303) in an oblique direction.

6. The device for preparing a composite carbon source for denitrification of sewage according to claim 5, characterized in that: The first blanking mechanism (3) further comprises: The support cavity (305) is fixedly connected to the end of the extension tube (304), and the inner wall of the bottom end of the support cavity (305) is fixedly connected to the discharge tube (307) in an oblique direction; The cloth bag (306) is movably fitted to the inner wall of the support cavity (305), and its opening is communicated with the extension tube (304).

7. The device for preparing a composite carbon source for denitrification of sewage according to claim 5, characterized in that: The second blanking mechanism (4) comprises: Slider 1 (405), fixedly connected to the outer wall of one side of discharge pipe 1 (303); A transverse guide rail (404) is fixedly connected to the outer wall of the bottom end of the mixing bin (1), and a slider (405) is movably connected to the transverse guide rail (404), and a slider (406) is also movably connected to the transverse guide rail (404); The third discharge pipe (402) is fixedly connected to the second slider (406), and the outer wall of the top end thereof is movably fitted to the outer wall of the bottom end of the funnel (7); The connecting rod (403) has two ends fixedly connected to the discharge pipe three (402) and the discharge pipe one (303) respectively.

8. A method for preparing a composite carbon source for wastewater denitrification, characterized in that: The specific steps include: S1: Add raw materials into the mixing bin (1) and control the raw material ratio during the process; S2: The air rod (505) extends, reducing the inner angle between the push plate 1 (516) and the push plate 2 (517), and then the motor (501) drives the support shaft 1 (502), the support shaft 2 (508) and the support shaft 3 (511) to rotate and stir; S3: After the mixing is completed, the funnel (7) and the discharge pipe (303) are connected through the spring buckle (10), and the liquid is discharged and the sludge is filtered at the same time; S4: After the discharge is completed, the spring buckle (10) is opened, the discharge pipe 3 (402) is switched for use by translation, and the funnel (7) and the discharge pipe 3 (402) are connected by the spring buckle (10); S5: The air rod (505) retracts, and the push plate 1 (516) and the push plate 2 (517) are unfolded, and the motor (501) drives the push plate 1 (516) and the push plate 2 (517) to rotate to clean the sludge.

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