A sewage treatment method and device with recoverable carbon source

Abstract

This invention provides a wastewater treatment method and apparatus with recoverable carbon source, relating to the field of wastewater treatment. The wastewater treatment apparatus with recoverable carbon source includes a treatment tank. A spraying mechanism is provided on one side of the upper end of the treatment tank. The spraying mechanism includes a conveying box fixed to one side of the upper surface of the treatment tank. An impurity pump is fixedly connected to the upper surface of the conveying box. A motor box is fixedly connected to the outer wall of the rear end of the conveying box. A geared motor is installed inside the motor box. The output end of the geared motor passes through the motor box to the inside of the conveying box and is fixedly connected to an auger roller. In this invention, the conveying pipe is placed into the flocculant placement box, the impurity pump is started, and the impurity pump delivers the flocculant into the inside of the conveying box. Then, the geared motor drives the auger roller to rotate, causing the flocculant to move inside the conveying box. When passing through the discharge hole, a certain amount of flocculant falls, and excess flocculant is discharged from the discharge hopper, effectively achieving uniform spraying.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment, specifically to a wastewater treatment method and apparatus in which the carbon source can be recovered. Background Technology

[0002] With the acceleration of industrialization and the continuous increase in population, the discharge of urban sewage is rising year by year. According to relevant statistics, the world generates tens of billions of cubic meters of sewage every year. This sewage not only contains a large number of pollutants, but also contains abundant organic carbon sources. Traditional sewage treatment technologies mainly focus on removing pollutants to meet discharge standards. While these methods effectively remove pollutants from the water, they often neglect the recovery and utilization of usable organic carbon sources in the sewage, resulting in the waste of valuable resources. Therefore, a sewage treatment method and device with recoverable carbon sources is proposed.

[0003] Currently, carbon source recovery from wastewater typically involves extraction from flocculated solid particles. However, most existing methods for fixing particles rely on flocculants to shape the particles, which are usually applied manually or by equipment. Since wastewater ponds are relatively large, it's difficult to ensure flocculants are applied to every area, potentially leading to ineffective mixing of some wastewater with the flocculant and slower flocculation. Furthermore, existing equipment cannot automatically collect the flocculated solid particles automatically; manual collection or using other equipment is cumbersome. Therefore, carbon source recovery from these solid particles becomes more challenging. To address this, a wastewater treatment method and apparatus for carbon source recovery is proposed. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a wastewater treatment method and apparatus with recoverable carbon sources, solving the problems that existing flocculants cannot be effectively distributed to all corners of the wastewater tank and cannot effectively separate the flocculated solid particles from the wastewater in the tank automatically.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A wastewater treatment method and apparatus with recoverable carbon source includes a treatment tank. A spraying mechanism is provided on one side of the upper end of the treatment tank. The spraying mechanism includes a conveying box fixed to one side of the upper surface of the treatment tank. An impurity pump is fixedly connected to the upper surface of the conveying box. A motor box is fixedly connected to the outer wall of the rear end of the conveying box. A geared motor is provided inside the motor box. The output end of the geared motor passes through the motor box to the inside of the conveying box and is fixedly connected to an auger roller. A plurality of discharge holes are opened on the lower surface of the conveying box.

[0009] The processing pool is equipped with a processing mechanism, which includes movable grooves on the inner walls of both sides of the processing pool. A sliding rod is installed inside the movable groove, and a slider is slidably connected to the rod body. The processing mechanism also includes a toothed plate fixedly connected to the upper end of the outer wall of one side of the processing pool. A mounting frame is slidably connected to the outer wall of the toothed plate on the side away from the processing pool. A walking motor is fixedly connected to the inner wall of one side of the mounting frame, and a walking gear is fixedly connected to the output end of the walking motor.

[0010] The slider is fixedly connected to a movable plate on the outer wall of the side near the middle of the treatment pool. The movable plate has multiple slots. A support rod is slidably connected inside the slots. An mounting plate is fixedly connected to the upper surface of the support rod. A servo motor is fixedly connected to the lower surface of the mounting plate. A connecting shaft is fixedly connected to the output end of the servo motor. A treatment frame is fixedly connected to the lower surface of the support rod. Rotating rollers are rotatably connected to the inner walls of both sides of the treatment frame. A power box is fixedly connected to the middle of the top surface of the treatment frame. Lifting mechanisms are provided at the four corners of the treatment pool.

[0011] Through the above technical solutions, the device and method provide important support for improving wastewater treatment efficiency, reducing energy consumption, reducing pollution, and conserving resources by using advanced automation technology, carbon source recovery, efficient utilization of flocculants, and fine treatment of wastewater. At the same time, it can not only reduce organic pollutants in wastewater, but also realize the resource utilization of carbon sources to provide energy or other usable resources.

[0012] Furthermore, the input end of the impurity pump is fixedly connected to a conveying pipe, the output end of the impurity pump is fixedly connected to a feed pipe, the end of the feed pipe away from the impurity pump is connected to the conveying box, the rear end of the lower surface of the conveying box is fixedly connected to a discharge hopper, and the front outer wall of the auger roller is rotatably connected to the front inner wall of the conveying box.

[0013] The above technical solution allows the agent to be transported into the feed tank via an impurity pump, and the flocculant can be more evenly distributed into the treatment tank via an auger roller, thereby improving flocculation efficiency.

[0014] Furthermore, the middle part of the rotating roller body is rotatably connected to and fitted with a driven gear inside the power box, and the lower end of the connecting shaft passes through the moving plate and the processing frame in sequence to the inside of the power box and is fixedly connected with a driving gear, and the driven gear meshes with the driving gear;

[0015] The above technical solution enables the driven gear to rotate via the active gear, thereby allowing the rotating roller to rotate counterclockwise, which in turn can better clean the flocculated material on the wire frame.

[0016] Furthermore, multiple agitator plates are fixedly connected to both ends of the rotating roller body, and multiple processing brushes are fixedly connected to the front outer wall and the rear outer wall of the agitator plates.

[0017] The above technical solution allows for better mixing and stirring of flocculant and wastewater via an agitator plate. Furthermore, the treatment brush, which is longer than the agitator plate, effectively cleans and collects the flocculants filtered through the wire frame.

[0018] Furthermore, the lifting mechanism includes corner pads fixedly connected to the lower ends of the four corners of the treatment pool. An electric hydraulic rod is fixedly connected to the upper surface of each corner pad. A connecting plate is fixedly connected to the output end of each electric hydraulic rod. A fixing rod is fixedly connected to the lower surface of each connecting plate on the side closest to the treatment pool. A wire frame is fixedly connected to the lower surface of each fixing rod.

[0019] The above technical solution allows the wire frame to be lifted by an electric hydraulic rod, which can better filter the flocculents in the sewage. This allows the flocculents to settle at the top of the wire frame, making it easier for the treatment mechanism to clean and collect them, thereby extracting carbon sources from the flocculents.

[0020] Furthermore, sliding grooves are provided on both sides of the upper surface of the wire frame, and rollers slide inside the sliding grooves, with the rollers rotating on the inner walls of both sides of the lower surface of the processing frame.

[0021] The above technical solution enables the steel wire frame to drive the processing frame to rise and fall more effectively.

[0022] Furthermore, the traveling gear is rotatably connected to the slider on the adjacent side;

[0023] The above technical solution enables the walking motor to better drive the moving plate to move.

[0024] Furthermore, a discharge trough is provided at the front end of the upper surface of the treatment pool;

[0025] The above technical solution involves a discharge trough at the front end of the upper surface of the treatment tank, which allows for better discharge of flocculents and facilitates the extraction of carbon sources from the flocculents.

[0026] Furthermore, a wastewater treatment method in which the carbon source can be recovered includes the following steps:

[0027] S1. Discharge the wastewater from the previous process into the treatment tank through a pipe;

[0028] S2. Start the spraying mechanism and inject an appropriate amount of flocculant into the treatment tank through the spraying mechanism;

[0029] S3. Start the treatment mechanism to move automatically and stir the wastewater and flocculant in the treatment tank;

[0030] S4. After stirring, let it stand for an appropriate time and allow it to settle naturally;

[0031] S5. After settling, start the lifting mechanism to separate the flocculent material from the wastewater in the treatment tank;

[0032] S6. After the lifting mechanism separates the flocs from the wastewater, it restarts the treatment mechanism to push the flocs after separating the wastewater out of the discharge trough and into the next carbon source recovery process.

[0033] Furthermore, the settling time in step S4 is 30 minutes to 60 minutes;

[0034] By using the above technical solution, the settling time in step S4 is 30-60 minutes, thereby ensuring that the reagent and wastewater are fully mixed while improving the recovery efficiency of carbon source.

[0035] (III) Beneficial Effects

[0036] This invention provides a wastewater treatment method and apparatus in which the carbon source can be recovered. It has the following beneficial effects:

[0037] 1. This invention provides a wastewater treatment device with recoverable carbon source. The device, through a spraying mechanism, places a flocculant into a flocculant container via a feed pipe. An impurity pump is then activated to deliver the flocculant into the feed hopper. A geared motor drives an auger roller to rotate, causing the flocculant to move within the feed hopper. A certain amount of flocculant falls through the discharge hole, while excess flocculant is discharged from the discharge hopper and collected by workers. A servo motor drives a connecting shaft to rotate, which in turn drives a drive gear. The drive gear meshes with a driven gear to rotate a rotating roller, which in turn drives a stirring plate. This agitates the flocculant and wastewater in the treatment tank, ensuring thorough mixing of the flocculant with wastewater in all corners of the tank. This avoids the problem of poor flocculation caused by ineffective flocculant distribution in previous treatment methods.

[0038] 2. This invention provides a wastewater treatment device with recoverable carbon source. The device, through a lifting mechanism and a treatment mechanism, after flocculation, uses an electric hydraulic rod to lift the connecting plate, causing the connecting plate to move the fixed rod. The fixed rod then moves the wire frame upwards, filtering the flocculated solid particles in the treatment tank. The flocculated solid particles are filtered onto the upper surface of the wire frame. As the wire frame rises, it also moves the treatment frame upwards, causing the traveling motor to rotate the traveling gear, which in turn moves the mounting frame and the slider. Simultaneously, a servo motor drives the rotating roller to rotate, sweeping the flocculated material on the upper surface of the wire frame towards the front of the treatment tank through a treatment brush, discharging it from the discharge chute. The collected flocculated material is then transported by workers to the next carbon source recovery treatment process, thus avoiding the previously cumbersome problem of manual collection or moving equipment. Attached Figure Description

[0039] Figure 1 This is an isometric view of the present invention;

[0040] Figure 2 This is a schematic diagram of the structure of the present invention;

[0041] Figure 3 This is the isometric view of the wire frame of the present invention;

[0042] Figure 4 This is a schematic diagram of the processing mechanism in this invention;

[0043] Figure 5 This is a schematic diagram of the rotating roller in this invention;

[0044] Figure 6 This is a cross-sectional view of the processing box in this invention;

[0045] Figure 7 This is a cross-sectional view of the spraying mechanism in this invention;

[0046] Figure 8 This is a schematic diagram of the spraying mechanism in this invention.

[0047] in,

[0048] 1. Treatment pool;

[0049] 2. Lifting mechanism; 201. Corner pad; 202. Electro-hydraulic rod; 203. Connecting plate; 204. Fixing rod; 205. Wire frame; 206. Sliding groove

[0050] 3. Processing mechanism; 301. Movable groove; 302. Slide rod; 303. Mounting frame; 304. Travel motor; 305. Travel gear; 306. Tooth plate; 307. Mounting plate; 308. Servo motor; 309. Hole slot; 310. Moving plate; 311. Slider; 312. Rotating roller; 313. Agitating plate; 314. Processing brush; 315. Connecting shaft; 316. Power box; 317. Roller; 318. Processing frame; 319. Support rod; 320. Driven gear; 321. Driving gear;

[0051] 4. Spraying mechanism; 401. Feeding box; 402. Motor box; 403. Gear motor; 404. Discharge hopper; 405. Screw roller; 406. Discharge hole; 407. Feed pipe; 408. Feeding pipe; 409. Impurity pump;

[0052] 5. Discharge chute. Detailed Implementation

[0053] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0054] Example:

[0055] like Figure 1-8As shown, this embodiment of the invention provides a wastewater treatment method and apparatus with recoverable carbon source, including a treatment tank 1. A spraying mechanism 4 is provided on one side of the upper end of the treatment tank 1. The spraying mechanism 4 includes a conveying box 401 fixed to one side of the upper surface of the treatment tank 1. An impurity pump 409 is fixedly connected to the upper surface of the conveying box 401. A motor box 402 is fixedly connected to the outer wall of the rear end of the conveying box 401. A reduction motor 403 is provided inside the motor box 402. The output end of the reduction motor 403 passes through the motor box 402 to the inside of the conveying box 401 and is fixedly connected to an auger roller 405. A plurality of discharge holes 406 are opened on the lower surface of the conveying box 401.

[0056] The processing pool 1 is equipped with a processing mechanism 3. The processing mechanism 3 includes movable grooves 301 opened on the inner walls of both sides of the processing pool 1. A slide rod 302 is installed inside the movable groove 301. A slider 311 is slidably connected to the body of the slide rod 302. The processing mechanism 3 also includes a toothed plate 306 fixedly connected to the upper end of the outer wall of one side of the processing pool 1. A mounting frame 303 is slidably connected to the outer wall of the toothed plate 306 away from the processing pool 1. A walking motor 304 is fixedly connected to the inner wall of one side of the mounting frame 303. A walking gear 305 is fixedly connected to the output end of the walking motor 304.

[0057] A movable plate 310 is fixedly connected to the outer wall of the slider 311 near the middle of the treatment pool 1. The movable plate 310 has multiple slots 309. A support rod 319 is slidably connected inside the slots 309. An installation plate 307 is fixedly connected to the upper surface of the support rod 319. A servo motor 308 is fixedly connected to the lower surface of the installation plate 307. A connecting shaft 315 is fixedly connected to the output end of the servo motor 308. A treatment frame 318 is fixedly connected to the lower surface of the support rod 319. Rotating rollers 312 are rotatably connected to the inner walls of both sides of the treatment frame 318. A power box 316 is fixedly connected to the middle of the top surface of the treatment frame 318. A lifting mechanism 2 is provided at each of the four corners of the treatment pool 1.

[0058] This device and method, through advanced automation technology, carbon source recovery, efficient utilization of flocculants, and fine treatment of wastewater, provides important support for improving wastewater treatment efficiency, reducing energy consumption, reducing pollution, and conserving resources. At the same time, it can not only reduce organic pollutants in wastewater, but also realize the resource utilization of carbon sources to provide energy or other usable resources.

[0059] The input end of the impurity pump 409 is fixedly connected to the conveying pipe 408, and the output end of the impurity pump 409 is fixedly connected to the feed pipe 407. The end of the feed pipe 407 away from the impurity pump 409 is connected to the conveying box 401. The rear end of the lower surface of the conveying box 401 is fixedly connected to the discharge hopper 404. The outer wall of the front end of the auger roller 405 is rotatably connected to the inner wall of the front end of the conveying box 401. Thus, the impurity pump 409 conveys the agent to the inside of the conveying box 401. In this way, the auger roller 405 can more evenly sprinkle the flocculant into the inside of the treatment tank 1, thereby improving the flocculation efficiency.

[0060] The middle part of the rotating roller 312 is rotatably connected to and fitted with a driven gear 320 inside the power box 316. The lower end of the connecting shaft 315 passes through the moving plate 310 and the processing frame 318 in sequence to the inside of the power box 316 and is fixedly connected to the driving gear 321. The driven gear 320 meshes with the driving gear 321, thereby driving the driven gear 320 to rotate. This allows the rotating roller 312 to rotate counterclockwise, which can better clean the flocculants on the wire frame 205. Multiple agitator plates 313 are fixedly connected to both ends of the rotating roller 312. Multiple processing brushes 314 are fixedly connected to the front and rear outer walls of the agitator plates 313. The agitator plates 313 can better mix and stir the flocculant and sewage. The processing brushes 314 are longer than the agitator plates 313, which can better clean and collect the flocculants filtered by the wire frame 205.

[0061] The lifting mechanism 2 includes corner pads 201 fixedly connected to the lower ends of the four corners of the treatment tank 1. An electric hydraulic rod 202 is fixedly connected to the upper surface of each corner pad 201. A connecting plate 203 is fixedly connected to the output end of the electric hydraulic rod 202. A fixing rod 204 is fixedly connected to the lower surface of the connecting plate 203 on the side near the treatment tank 1. A wire frame 205 is fixedly connected to the lower surface of the fixing rod 204. The wire frame 205 is lifted by the electric hydraulic rod 202, which can better filter the flocculent in the sewage. The flocculent is then placed on the upper end of the wire frame 205, making it convenient for the treatment mechanism 3 to clean and collect it, thereby extracting carbon source from the flocculent.

[0062] The upper surface of the wire frame 205 is provided with sliding grooves 206 on both sides. Rollers 317 slide inside the sliding grooves 206. The rollers 317 rotate on the inner walls of both sides of the lower surface of the processing frame 318, so that the wire frame 205 can better drive the processing frame 318 to rise and fall. The traveling gear 305 is rotatably connected to the adjacent slider 311, so that the traveling motor 304 can better drive the moving plate 310 to move. The front end of the upper surface of the processing pool 1 is provided with a discharge chute 5. By providing the discharge chute 5 at the front end of the upper surface of the processing pool 1, the flocculent can be discharged better, thus facilitating the extraction of carbon source from the flocculent.

[0063] A wastewater treatment method in which the carbon source can be recovered includes the following steps:

[0064] S1. The wastewater treated in the previous process is discharged into the treatment tank 1 through a pipe.

[0065] S2. Start the spraying mechanism 4 to inject an appropriate amount of flocculant into the treatment tank 1.

[0066] S3. Start the treatment unit 3, allowing it to move automatically and stir the wastewater and flocculant in the treatment tank 1.

[0067] S4. After stirring, allow it to stand for an appropriate time and settle naturally.

[0068] S5. After settling, start the lifting mechanism 2 to separate the flocculent material from the wastewater in the treatment tank 1.

[0069] S6. After the lifting mechanism 2 separates the flocs from the wastewater, the treatment mechanism 3 is restarted, so that the treatment mechanism 3 pushes the flocs after separating the wastewater out of the discharge tank 5 and enters the next carbon source recovery process.

[0070] The settling time in step S4 is 30-60 minutes. By setting the settling time in step S4 for 30-60 minutes, the efficiency of carbon source recovery is improved while ensuring that the reagent is fully mixed with the wastewater.

[0071] Working principle: During use, the wastewater treated in the previous process is discharged into the treatment tank 1 through a pipe. Then, the operator places the conveying pipe 408 into the flocculant placement box and starts the impurity pump 409 to transport the flocculant into the conveying box 401. The reducer motor 403 drives the auger roller 405 to rotate, causing the flocculant to move inside the conveying box 401. When it passes through the discharge hole 406, a certain amount of flocculant falls out. The excess flocculant is then discharged from the discharge hopper 404. The staff collects the wastewater, then the servo motor 308 drives the connecting shaft 315 to rotate, which in turn drives the drive gear 321 to rotate. The drive gear 321 then meshes with the driven gear 320, causing the rotating roller 312 to rotate. This rotating roller 312 then drives the agitator plate 313 to rotate, thus stirring the flocculant and wastewater in the treatment tank 1. This ensures that the wastewater in every corner of the treatment tank 1 is fully mixed with the flocculant. After a period of settling, the electro-hydraulic rod 202 lifts the connecting plate 20. 3. The connecting plate 203 drives the fixed rod 204 to move, and then the fixed rod 204 drives the wire frame 205 to rise. When the wire frame 205 rises, it filters the flocculated solid particles in the treatment tank 1, so that the flocculated solid particles are filtered onto the upper surface of the wire frame 205. When the wire frame 205 rises, it drives the treatment frame 318 to rise. When the treatment frame 318 rises, the support rod 319 slides inside the slot 309 and drives the mounting plate 307 to move. Then, the walking motor 304 drives the walking gear 305 to move forward. The rotating gear 305 meshes with the toothed plate 306, causing the mounting frame 303 to drive the slider 311 to move along the body of the slide rod 302. Simultaneously, the servo motor 308 drives the rotating roller 312 to rotate via the drive gear 321 and the driven gear 320. This causes the flocculent material on the upper surface of the wire frame 205 to be swept towards the front end of the treatment tank 1 by the processing brush 314 located outside the rotating roller 312, so that it is discharged from the discharge chute 5. The collected flocculent material is then transported by the staff to the next carbon source recovery treatment process.

[0072] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wastewater treatment device with recoverable carbon source, comprising a treatment tank (1), characterized in that: A spraying mechanism (4) is provided on one side of the upper end of the treatment tank (1). The spraying mechanism (4) includes a conveying box (401) fixed on one side of the upper surface of the treatment tank (1). An impurity pump (409) is fixedly connected to the upper surface of the conveying box (401). A motor box (402) is fixedly connected to the outer wall of the rear end of the conveying box (401). A geared motor (403) is provided inside the motor box (402). The output end of the geared motor (403) passes through the motor box (402) to the inside of the conveying box (401) and is fixedly connected to an auger roller (405). A plurality of discharge holes (406) are opened on the lower surface of the conveying box (401). The processing pool (1) is provided with a processing mechanism (3). The processing mechanism (3) includes movable grooves (301) opened on both sides of the inner wall of the processing pool (1). A slide rod (302) is provided inside the movable groove (301). A slider (311) is slidably connected to the body of the slide rod (302). The processing mechanism (3) also includes a toothed plate (306) fixedly connected to the upper end of the outer wall of one side of the processing pool (1). A mounting frame (303) is slidably connected to the outer wall of the toothed plate (306) away from the processing pool (1). A walking motor (304) is fixedly connected to the inner wall of one side of the mounting frame (303). A walking gear (305) is fixedly connected to the output end of the walking motor (304). The slider (311) is fixedly connected to a movable plate (310) on the outer wall of one side near the middle of the treatment pool (1). The movable plate (310) has multiple slots (309) on its body. A support rod (319) is slidably connected inside the slots (309). An installation plate (307) is fixedly connected to the upper surface of the support rod (319). A servo motor (308) is fixedly connected to the lower surface of the installation plate (307). A connecting shaft (315) is fixedly connected to the output end of the servo motor (308). A treatment frame (318) is fixedly connected to the lower surface of the support rod (319). Rotating rollers (312) are rotatably connected to the inner walls of both sides of the treatment frame (318). A power box (316) is fixedly connected to the middle of the top surface of the treatment frame (318). A lifting mechanism (2) is provided at each of the four corners of the treatment pool (1). Multiple agitator plates (313) are fixedly connected to both ends of the rotating roller (312), and multiple processing brushes (314) are fixedly connected to the front outer wall and the rear outer wall of the agitator plate (313). The lifting mechanism (2) includes corner pads (201) fixedly connected to the lower ends of the four corners of the treatment pool (1). An electric hydraulic rod (202) is fixedly connected to the upper surface of each corner pad (201). A connecting plate (203) is fixedly connected to the output end of each electric hydraulic rod (202). A fixing rod (204) is fixedly connected to the lower surface of the connecting plate (203) on the side close to the treatment pool (1). A wire frame (205) is fixedly connected to the lower surface of each fixing rod (204).

2. The wastewater treatment device with recoverable carbon source according to claim 1, characterized in that: The input end of the impurity pump (409) is fixedly connected to a conveying pipe (408), and the output end of the impurity pump (409) is fixedly connected to a feed pipe (407). The end of the feed pipe (407) away from the impurity pump (409) is connected to the conveying box (401). The rear end of the lower surface of the conveying box (401) is fixedly connected to a discharge hopper (404). The front outer wall of the auger roller (405) is rotatably connected to the front inner wall of the conveying box (401).

3. The wastewater treatment device with recoverable carbon source according to claim 1, characterized in that: The middle part of the rotating roller (312) is rotatably connected to the power box (316) and fitted with a driven gear (320). The lower end of the connecting shaft (315) passes through the moving plate (310) and the processing frame (318) in sequence to the inside of the power box (316) and is fixedly connected with the driving gear (321). The driven gear (320) meshes with the driving gear (321).

4. A wastewater treatment device with recoverable carbon source according to claim 1, characterized in that: The upper surface of the wire frame (205) is provided with sliding grooves (206) on both sides. Rollers (317) slide inside the sliding grooves (206) and the rollers (317) rotate on the inner walls of both sides of the lower surface of the processing frame (318).

5. A wastewater treatment device with recoverable carbon source according to claim 1, characterized in that: The traveling gear (305) is meshed with the toothed plate (306).

6. A wastewater treatment device with recoverable carbon source according to claim 1, characterized in that: The front end of the upper surface of the treatment pool (1) is provided with a discharge trough (5).

7. A wastewater treatment method in which the carbon source can be recovered, characterized in that, The wastewater treatment apparatus according to any one of claims 1-6 includes the following steps: S1. The wastewater treated in the previous process is discharged into the treatment tank (1) through a pipe; S2. Start the spraying mechanism (4) and inject an appropriate amount of flocculant into the treatment tank (1) through the spraying mechanism (4); S3. Start the treatment mechanism (3) so that the treatment mechanism (3) moves on its own to stir the sewage and flocculant in the treatment tank (1); S4. After stirring, let it stand for an appropriate time and allow it to settle naturally; S5. After settling, start the lifting mechanism (2) to separate the flocculent material from the sewage in the treatment tank (1) through the lifting mechanism (2); S6. After the lifting mechanism (2) separates the flocs from the sewage, the treatment mechanism (3) is started again, so that the treatment mechanism (3) pushes the flocs after the sewage separation out of the discharge tank (5) and enters the next carbon source recovery process.

8. A wastewater treatment method with recoverable carbon source according to claim 7, characterized in that: The settling time in step S4 is 30 to 60 minutes.

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