Graded plug flow type anaerobic acidification reactor

Abstract

The invention relates to the technical field of sewage treatment, and discloses a graded plug-flow anaerobic acidification reactor which comprises a water inlet tank, a first reaction tank, a second reaction tank and a third reaction tank, a cleaning mechanism; the cleaning mechanisms are respectively arranged in the water inlet tank, the first reaction tank, the second reaction tank and the third reaction tank; the cleaning mechanisms are used for cleaning sludge remained in the water inlet tank, the first reaction tank, the second reaction tank and the third reaction tank through moving frames, mounting frames, connecting frames and spray heads in the cleaning mechanisms; when the cleaning mechanism runs, the first motor adjusts the height of the mounting frame, so that the scraper is attached to the bottom or the wall of the pool; meanwhile, piston rods of two first electric cylinders are matched to stretch and retract to drive a rotating block to rotate, the angles of a connecting frame and a spray head are adjusted, cleaning water conveyed by a water conveying pipe is sprayed out through the spray head, high-pressure water flow is matched with the scraping action of a scraper, and efficient cleaning of sludge in the pool body is achieved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a staged plug flow anaerobic acidification reactor. Background Technology

[0002] In the field of wastewater treatment, staged plug-flow anaerobic acidification reactors are widely used for the pretreatment and resource recovery of organic wastewater due to their advantages such as clear division of labor among microbial communities and strong resistance to shock loads. Based on anaerobic biological treatment technology, the staged plug-flow anaerobic acidification reactor optimizes the anaerobic acidification effect by staging the reaction process. It is used to degrade organic matter in organic wastewater (such as food processing wastewater and livestock wastewater) or organic solid waste (such as kitchen waste and sludge). Through staged and plug-flow design, the acidification stage of the anaerobic reaction is optimized, ultimately achieving pollutant reduction, resource recovery, or providing conditions for subsequent advanced treatment (such as methanation). In the staged phase-separated plug flow anaerobic reactor and anaerobic reaction process described in Chinese patent application number 202311512290.3, during operation of the anaerobic reactor, the material flows into the high-temperature hydrolysis zone from the feed inlet. Then, the material flows sequentially through the primary and secondary anaerobic zones via the baffles and through the openings, finally overflowing from above the overflow plate into the temporary storage tank. During its journey, the material undergoes propulsion and digestion, achieving staged phase separation. Temperature control coils regulate the material temperature in each reaction zone to meet the optimal survival environment for the dominant bacterial groups, achieving phase separation between hydrolytic bacteria and methanogenic bacteria. A gas collection cap is installed at the top of the reaction tank, integrating fermentation and gas storage. It utilizes the liquid surface of fermentation materials for liquid sealing to ensure the safety of biogas storage. It also achieves better separation of microbial phases, fermentation temperature, and fermentation stages. Furthermore, the internal components are simple, and the horizontal chamber of the reaction tank is not limited by space height, further improving the anaerobic reaction effect.

[0003] Currently, sludge deposition is a common problem inside reactors. Due to the uneven flow velocity of wastewater during the flow process and the presence of dead zones at the bottom of the reaction zone, undegraded solid residues and aged sludge tend to accumulate at the bottom of the tank, making cleaning and maintenance difficult. Summary of the Invention

[0004] The purpose of this invention is to provide a staged plug flow anaerobic acidification reactor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A staged plug flow anaerobic acidification reactor includes an inlet tank, a first reaction tank, a second reaction tank, and a third reaction tank; A cleaning mechanism is provided; the cleaning mechanism is respectively installed in the water inlet tank, the first reaction tank, the second reaction tank and the third reaction tank, and the cleaning mechanism cleans the residual sludge inside the water inlet tank, the first reaction tank, the second reaction tank and the third reaction tank through the movable frame, the mounting frame, the connecting frame and the nozzle; A mixing mechanism is mounted on the movable frame, and the mixing mechanism stirs the wastewater in the first reaction tank, the second reaction tank and the third reaction tank through the mounting shell therein and a plurality of stirring rods; A fixing mechanism is provided on the mounting frame, and the fixing mechanism fixes the position of the mounting frame on the movable frame through a fixing plate thereon.

[0006] Optionally, the cleaning mechanism includes several movable frames, slide rails, mounting frames, two first sealing shells, a first electric cylinder, a rotating block, a connecting frame, a nozzle, and a water supply pipe. The movable frames are slidably installed inside the water inlet pool, the first reaction pool, the second reaction pool, and the third reaction pool. The slide rails are fixedly installed on both sides of the corresponding movable frames, with one side extending into the interior of the movable frame. The mounting frames are slidably installed on the inner wall of the movable frames, with both sides slidably installed on the corresponding slide rails. The top of the mounting frame has a first fixing groove and a second fixing groove. The two first sealing shells are fixedly installed on one side of the first fixing groove wall. The first electric cylinder is fixedly installed inside the first sealing shell, with its output end extending to the outside of the bottom end of the first sealing shell. The connecting frame is rotatably installed on opposite sides of the first fixing groove wall. The rotating block is rotatably installed on both sides of the connecting frame, with one end of the rotating block fixedly installed at the output end of the corresponding first electric cylinder. The nozzle is fixedly installed at the bottom of the connecting frame, and a connection port is fixedly installed at the top of the connecting frame. One end of the water supply pipe is fixedly installed at one end of the connection port.

[0007] Optionally, several brackets are fixedly installed on the top of the water inlet pool, the first reaction pool, the second reaction pool, and the third reaction pool. Several limiting rods are fixedly installed on the inner wall of the brackets. Mounting plates are fixedly installed on both sides of the top of the movable frame. Several protrusions are fixedly installed on one side of the mounting plates. First fixing members and second fixing members are fixedly installed at the upper and lower ends of the protrusions, respectively. The first fixing members and second fixing members form a ring. Several ball grooves are opened in the inner ring of the first fixing members and second fixing members. Balls are rotatably installed on the groove walls of the ball grooves. The connected first fixing members and second fixing members are slidably installed on the outer wall of the corresponding limiting rods.

[0008] Optionally, a plurality of first motors are fixedly installed on the top of the mobile frame, a first turntable is fixedly installed on the output end of the first motor, a first steel cable is fixedly installed on the outer wall of the first turntable, the other end of the first steel cable is fixedly installed on the top of the mounting frame, a plurality of pulleys are installed on the bottom of the mobile frame, and a scraper is fixedly installed on one side of the bottom of the mounting frame.

[0009] Optionally, a fixed frame is fixedly installed on both sides of the water inlet pool, the first reaction pool, the second reaction pool, and the third reaction pool. A second motor is fixedly installed at the bottom of the inner wall of the fixed frame, a second turntable is fixedly installed at the output end of the second motor, and a second steel cable is fixedly installed on the outer wall of the second turntable. A connecting port is opened on one side of the fixed frame, and one end of the second steel cable extends through the connecting port to the outside of the fixed frame. Several limiting wheels are installed on one side of the inner wall of the fixed frame, and the second steel cable is located on the outer wall of the corresponding limiting wheel. One end of the second steel cable extending to the outside of the fixed frame is fixedly installed on the side wall of the corresponding movable frame.

[0010] Optionally, the mixing mechanism includes a mounting shell, a mounting groove, two mounting ports, a plurality of first mounting shafts, a first connecting plate, a second connecting plate, a first belt, a plurality of second mounting shafts, a stirring rod, a second belt, and a third motor. The mounting shell is fixedly mounted on the wall of the first mounting groove. The two mounting grooves are formed in the middle of the mounting shell, and the two mounting ports are formed at the upper and lower ends of one side of the mounting shell. The plurality of first mounting shafts are rotatably mounted on the upper and lower ends of the inner wall of the mounting groove. The first connecting plate and the second connecting plate are fixedly mounted on the outer wall of the first mounting shaft. The first belt is mounted on the outer wall of the corresponding first connecting plate and the second connecting plate. Both ends of the first mounting shaft extend into the interior of the corresponding mounting port. The third motor is fixedly mounted on the inner wall of the mounting groove. The output end of the third motor is fixedly mounted on the third connecting plate. The second belt is mounted on the outer wall of the third connecting plate. The other end of the second belt is mounted on the outer wall of the second connecting plate on one of the first mounting shafts. The second mounting shaft is rotatably mounted on the upper and lower ends of the inner wall of the mounting port. The second mounting shaft is fixedly connected to one end of the corresponding first mounting shaft. The stirring rod is fixedly mounted on the outer wall of the second mounting shaft.

[0011] Optionally, the fixing mechanism includes a second electric cylinder, a limiting frame, and a fixing plate. The mounting frame has several moving slots on both sides. The second electric cylinder is fixedly installed on the wall of the moving slot. The limiting frame is fixedly installed on the wall of the moving slot. The fixing plate is fixedly installed on the output end of the second electric cylinder. The fixing plate is slidably installed on the inner wall of the limiting frame.

[0012] Optionally, notches are provided between the water inlet pool and the first reaction pool, the first reaction pool and the second reaction pool, and the second reaction pool and the third reaction pool. A fixing frame is fixedly installed at the corresponding notch. A second sealing shell is fixedly installed on the top of the fixing frame. A third electric cylinder is fixedly installed on the inner wall of the second sealing shell. The output end of the third electric cylinder extends to the inner ring of the fixing frame. A baffle is fixedly installed on the output end of the third electric cylinder. The baffle is slidably installed on the inner wall of the fixing frame. An air inlet is fixedly installed on one side of the second sealing shell. A first exhaust valve is fixedly installed on the other side of the second sealing shell.

[0013] Optionally, an installation frame is welded and fixed to the outer wall of the water inlet tank, the first reaction tank, the second reaction tank, and the third reaction tank. An installation cover is fixedly installed on the top of the installation frame. An exhaust pipe is fixedly installed on the top of the installation cover. Several feeding machines are fixedly installed on one side of the outer wall of the installation cover. The outlet ends of the feeding machines extend to the top of the interior of the first reaction tank, the second reaction tank, and the third reaction tank, respectively. A drain pipe is fixedly installed at the bottom of one side of the water inlet tank, the first reaction tank, the second reaction tank, and the third reaction tank. A second exhaust valve is fixedly installed on the top of the installation cover.

[0014] Optionally, an inlet is fixedly installed on one side of the water inlet pool, and the outlet end of the inlet extends to the top of the water inlet pool. Nitrogen gas delivery pipes are fixedly installed on one side of the first reaction pool, the second reaction pool, and the third reaction pool, and the nitrogen gas delivery pipes have several outlet ends that extend to the bottom of the first reaction pool, the second reaction pool, and the third reaction pool respectively.

[0015] The present invention has at least the following beneficial effects: (1) When the cleaning mechanism of this scheme is running, the first motor adjusts the height of the mounting frame so that the scraper is in contact with the bottom or wall of the pool; at the same time, the piston rods of the two first electric cylinders cooperate with the telescopic drive to rotate the rotating block, adjust the angle of the connecting frame and the nozzle, and the cleaning water delivered by the water pipe is sprayed out through the nozzle. The high-pressure water flow cooperates with the scraping action of the scraper to achieve efficient cleaning of the sludge inside the pool. (2) In this scheme, the second motor drives the moving frame to move laterally, and the height of the mounting frame is adjusted by the first motor so that the stirring rod can stir the sewage in different areas and at different depths, ensuring that the materials are mixed evenly and improving the reaction efficiency; (3) After the mounting frame is moved to the appropriate position, the second electric cylinder drives the fixing plate to extend and press against the inner wall surface of the moving frame, which facilitates fixing the position of the mounting frame; (4) This solution uses the third electric cylinder to extend and retract to drive the baffle to rise and fall, thereby separating or connecting adjacent pools. When the baffle rises, the pools are separated, which can achieve single pool maintenance or segmented treatment to prevent sewage backflow in each pool. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a diagram showing the position of the mobile frame of the present invention; Figure 3 This is an installation diagram of the limiting rod of the present invention; Figure 4 This is an installation diagram of the mounting bracket for the present invention; Figure 5 This is a diagram showing the mounting of the fixing plate of the present invention; Figure 6 This is a diagram showing the installation of the stirring rod of the present invention; Figure 7 This is a diagram showing the installation of the nozzle of the present invention; Figure 8 This is a diagram showing the installation of the baffle of the present invention; Figure 9 A cross-sectional view of the mounting shell of the present invention; Figure 10 This is a diagram showing the installation of the second steel cable according to the present invention.

[0017] The attached diagram lists the components represented by each number as follows: 1. Water inlet tank; 101. Water inlet; 102. First reaction tank; 103. Second reaction tank; 104. Third reaction tank; 105. Nitrogen delivery pipe; 106. Mounting frame; 107. Mounting cover; 108. Exhaust pipe; 109. Feeder; 2. Bracket; 201. Limiting rod; 3. Moving frame; 301. Mounting plate; 302. First fixing component; 303. Second fixing component; 304. First motor; 305. First turntable; 306. First steel cable; 307. Slide rail; 308. Mounting frame; 309. First sealing shell; 310. First electric cylinder; 311. Rotating block; 312. Connecting frame; 313. Nozzle; 315. Water delivery pipe; 3 16. Pulley; 317. Second electric cylinder; 318. Limiting frame; 319. Fixing plate; 320. Scraper; 4. Mounting shell; 401. Mounting groove; 402. Mounting port; 403. First mounting shaft; 404. First connecting plate; 405. Second connecting plate; 406. First belt; 407. Second mounting shaft; 408. Stirring rod; 409. Second belt; 410. Third motor; 5. Fixing frame; 501. Second motor; 502. Second turntable; 503. Second steel cable; 504. Limiting wheel; 6. Fixing bracket; 601. Second sealing shell; 602. Third electric cylinder; 603. Air inlet; 604. First exhaust valve; 605. Baffle. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-10This invention provides a staged plug-flow anaerobic acidification reactor, comprising an inlet tank 1, a first reaction tank 102, a second reaction tank 103, and a third reaction tank 104; a cleaning mechanism; the cleaning mechanism is respectively disposed in the inlet tank 1, the first reaction tank 102, the second reaction tank 103, and the third reaction tank 104, and the cleaning mechanism cleans the residual sludge inside the inlet tank 1, the first reaction tank 102, the second reaction tank 103, and the third reaction tank 104 through a movable frame 3, a mounting frame 308, a connecting frame 312, and a nozzle 313; and a mixing mechanism, the mixing mechanism is disposed on the movable frame 3, and the mixing mechanism uses a mounting shell 4 and several stirring rods 408 therein to clean the first reaction tank 102. 2. The wastewater in the second reaction tank 103 and the third reaction tank 104 is stirred; a fixing mechanism is set on the mounting frame 308, and the fixing mechanism fixes the position of the mounting frame 308 on the movable frame 3 through the fixing plate 319 on it; when the cleaning mechanism is running, the first motor 304 adjusts the height of the mounting frame 308 so that the scraper 320 is in contact with the bottom or wall of the tank; at the same time, the piston rods of the two first electric cylinders 310 cooperate with the telescopic drive to rotate the rotating block 311, adjust the angle of the connecting frame 312 and the nozzle 313, and the cleaning water delivered by the water pipe 315 is sprayed out through the nozzle 313. The high-pressure water flow, combined with the scraping action of the scraper 320, achieves efficient cleaning of the sludge inside the tank.

[0020] In some embodiments, referring to Figures 1 and 2, the cleaning mechanism includes several movable frames 3, slide rails 307, mounting frames 308, two first sealing shells 309, a first electric cylinder 310, a rotating block 311, a connecting frame 312, a nozzle 313, and a water supply pipe 315. The several movable frames 3 are slidably installed inside the water inlet pool 1, the first reaction pool 102, the second reaction pool 103, and the third reaction pool 104. The slide rails 307 are fixedly installed on both sides of the corresponding movable frames 3, with one side of the slide rails 307 extending into the movable frame 3. The mounting bracket 308 is slidably mounted on the inner wall of the movable frame 3. Both sides of the mounting bracket 308 are slidably mounted on corresponding slide rails 307. The top of the mounting bracket 308 has a first fixing groove and a second fixing groove. Two first sealing shells 309 are fixedly mounted on one side of the first fixing groove wall. A first electric cylinder 310 is fixedly mounted inside the first sealing shell 309, with its output end extending to the outside of the bottom end of the first sealing shell 309. A connecting frame 312 is rotatably mounted on opposite sides of the first fixing groove wall. Block 311 is rotatably mounted on both sides of the connecting frame 312. One end of the rotating block 311 is fixedly mounted on the output end of the corresponding first electric cylinder 310. The nozzle 313 is fixedly mounted on the bottom of the connecting frame 312. A connection port is fixedly mounted on the top of the connecting frame 312. One end of the water supply pipe 315 is fixedly mounted on one end of the connection port. The mounting bracket 308 is slidably connected to the slide rail 307 of the movable frame 3 via sliders on both sides. The top is connected to the first turntable 305 driven by the first motor 304 via the first steel cable 306. 4. Drive the first turntable 305 to rotate. When the first turntable 305 winds up the first steel cable 306, the mounting frame 308 is pulled upward and moves to above the water surface. When the first turntable 305 reverses and unfolds the first steel cable 306, the mounting frame 308 descends by its own weight. The second motor 501 drives the second turntable 502 to rotate, winds up and unwinds the second steel cable 503, and drives the moving frame 3 to move laterally along the limit rod 201, adjusting the cleaning range and cleaning position of the nozzle 313.

[0021] In this example, the connecting frame 312 is rotatably installed in the first fixed groove of the mounting bracket 308. The two sides are connected to the first electric cylinders 310 inside the first sealing shell 309 through rotating blocks 311. The bottom is equipped with a nozzle 313, and the top is connected to a water supply pipe 315 through a connecting port. The two first electric cylinders 310 cooperate to drive the two sides of the connecting frame 312 to move, thereby driving the nozzle 313 to rotate. The outer wall of the mounting cover 107 is provided with a water inlet, which is connected to an external water supply device through a pipe for water supply. The other end of the water supply pipe 315 is connected to the water inlet for supplying cleaning water to the nozzle 313.

[0022] In this example, the water supply pipe 315 is reserved with sufficient length inside the mounting cover 107 so that the water supply pipe 315 can move and extend with the movement of the mobile frame 3.

[0023] In some embodiments, see Figure 2 , Figure 4 ... Figure 6 , Figure 7 Several brackets 2 are fixedly installed on the top of the water inlet pool 1, the first reaction pool 102, the second reaction pool 103, and the third reaction pool 104. Several limiting rods 201 are fixedly installed on the inner wall of the brackets 2. Mounting plates 301 are fixedly installed on both sides of the top of the movable frame 3. Several protrusions are fixedly installed on one side of the mounting plate 301. First fixing parts 302 and second fixing parts 303 are fixedly installed at the upper and lower ends of the protrusions, respectively. The first fixing parts 302 and second fixing parts 303 form a ring. Several ball grooves are opened in the inner ring of the first fixing parts 302 and second fixing parts 303. Balls are rotatably installed on the groove walls. The first fixing parts 302 and second fixing parts are connected. 303 is slidably installed on the outer wall of the corresponding limiting rod 201. Several first motors 304 are fixedly installed on the top of the movable frame 3. A first turntable 305 is fixedly installed on the output end of the first motor 304. A first steel cable 306 is fixedly installed on the outer wall of the first turntable 305. The other end of the first steel cable 306 is fixedly installed on the top of the mounting frame 308. Several pulleys 316 are installed at the bottom of the movable frame 3. A scraper 320 is fixedly installed on one side of the bottom of the mounting frame 308. The movable frame 3 is slidably installed on the limiting rod 201 of the top support 2 of the pool body through the first fixing part 302 and the second fixing part 303 of the top mounting plate 301. The pulleys 316 at the bottom reduce friction with the bottom of the pool.

[0024] In this example, two supports 2 are respectively set on one side of the top of the water inlet pool 1 and the third reaction pool 104, and the other supports 2 are set on the top of the connection between the water inlet pool 1 and the first reaction pool 102, the first reaction pool 102 and the second reaction pool 103, and the second reaction pool 103 and the third reaction pool 104.

[0025] In some embodiments, see Figure 10 Fixed frames 5 are fixedly installed on both sides of the water inlet pool 1, the first reaction pool 102, the second reaction pool 103, and the third reaction pool 104. A second motor 501 is fixedly installed on the bottom of the inner wall of the fixed frame 5. A second turntable 502 is fixedly installed at the output end of the second motor 501. A second steel cable 503 is fixedly installed on the outer wall of the second turntable 502. A connecting port is opened on one side of the fixed frame 5. One end of the second steel cable 503 passes through the connecting port and extends to the outside of the fixed frame 5. Several limiting wheels 504 are installed on one side of the inner wall of the fixed frame 5. The second steel cable 503 is located on the outer wall of the corresponding limiting wheel 504. One end of the second steel cable 503 extending to the outside of the fixed frame is fixedly installed on the side wall of the corresponding moving frame 3. By setting the second motor 501, the second motors 501 on both sides cooperate to retract and extend the second steel cable 503 to pull the moving frame 3 to move laterally.

[0026] In some embodiments, see Figure 6 , Figure 9The mixing mechanism includes a mounting shell 4, a mounting groove 401, two mounting ports 402, several first mounting shafts 403, a first connecting plate 404, a second connecting plate 405, a first belt 406, several second mounting shafts 407, a stirring rod 408, a second belt 409, and a third motor 410. The mounting shell 4 is fixedly mounted on the wall of the first mounting groove. The two mounting grooves 401 are located in the middle of the mounting shell 4. The two mounting ports 402 are located at the upper and lower ends of one side of the mounting shell 4. Several first mounting shafts 403 are rotatably mounted on the upper and lower ends of the inner wall of the mounting groove 401. The first connecting plate 404 and the second connecting plate 405 are fixedly mounted on the outer wall of the first mounting shaft 403. The first belt 406 is mounted on the outer wall of the corresponding first connecting plate 404 and the second connecting plate 405. The two ends of the first mounting shaft 403 extend into the interior of the corresponding mounting ports 402. The third motor 410 is fixedly mounted on the inner wall of the mounting groove 401. The output end of the third motor 410 is fixedly mounted with a third connecting plate. The second belt 409 is installed on the outer wall of the third connecting plate, and the other end of the second belt 409 is installed on the outer wall of the second connecting plate 405 on one of the first mounting shafts 403. The second mounting shaft 407 is rotatably installed on the upper and lower ends of the inner wall of the mounting port 402. The second mounting shaft 407 is fixedly connected to one end of the corresponding first mounting shaft 403. The stirring rod 408 is fixedly installed on the outer wall of the second mounting shaft 407. The third motor 410 starts and drives the corresponding first mounting shaft 403 to rotate through the second belt 409. The first mounting shaft 403 drives the other first mounting shafts 403 to rotate synchronously through the first connecting plate 404, the second connecting plate 405 and the first belt 406, thereby causing all the stirring rods 408 to rotate. At the same time, the second motor 501 drives the moving frame 3 to move laterally, and the first motor 304 adjusts the height of the mounting frame 308 so that the stirring rods 408 can stir the sewage in different areas and at different depths to ensure uniform mixing of materials and improve reaction efficiency.

[0027] For further details, please refer to the following: Figure 5 The fixing mechanism includes a second electric cylinder 317, a limiting frame 318, and a fixing plate 319. The mounting frame 308 has several moving slots on both sides. The second electric cylinder 317 is fixedly installed on the wall of the moving slot, the limiting frame 318 is fixedly installed on the wall of the moving slot, and the fixing plate 319 is fixedly installed on the output end of the second electric cylinder 317. The fixing plate 319 is slidably installed on the inner wall of the limiting frame 318. After the mounting frame 308 moves to a suitable position, the second electric cylinder 317 drives the fixing plate 319 to extend and press against the inner wall surface of the moving frame 318, which facilitates fixing the position of the mounting frame 308.

[0028] In this example, a rubber pad can be installed on one side of the fixing plate 319 to enhance the fixing effect.

[0029] Furthermore, notches are provided between the water inlet pool 1 and the first reaction pool 102, between the first reaction pool 102 and the second reaction pool 103, and between the second reaction pool 103 and the third reaction pool 104. A fixing frame 6 is fixedly installed at each notch. A second sealing shell 601 is fixedly installed on the top of the fixing frame 6. A third electric cylinder 602 is fixedly installed on the inner wall of the second sealing shell 601. The output end of the third electric cylinder 602 extends to the inner ring of the fixing frame 6. A baffle 605 is fixedly installed on the output end of the third electric cylinder 602. The baffle 605 is slidably installed on the inner wall of the fixing frame 6. An air inlet 603 is fixedly installed on one side of the second sealing shell 601. A first exhaust valve 604 is fixedly installed on the other side of the second sealing shell 601; an air inlet 603 is fixedly installed on one side of the second sealing shell 601 for introducing protective gas, such as nitrogen, into the second sealing shell 601 to prevent the third electric cylinder 602 from being corroded; a first exhaust valve 604 is fixedly installed on the other side of the second sealing shell 601 for balancing the internal air pressure of the second sealing shell 601. The baffle 605 is raised and lowered by the extension and retraction of the third electric cylinder 602 to realize the isolation or connection of adjacent pools. When the baffle 605 rises, the pools are separated, which can realize single pool maintenance or segmented treatment to prevent sewage backflow in each pool.

[0030] like Figure 1 and Figure 2 As shown, an installation frame 106 is welded and fixed to the outer wall of the water inlet pool 1, the first reaction pool 102, the second reaction pool 103, and the third reaction pool 104. An installation cover 107 is fixedly installed on the top of the installation frame 106. An exhaust pipe 108 is fixedly installed on the top of the installation cover 107. Several feeders 109 are fixedly installed on one side of the outer wall of the installation cover 107. The outlet ends of the feeders 109 extend to the top of the interior of the first reaction pool 102, the second reaction pool 103, and the third reaction pool 104, respectively. A drain pipe is fixedly installed at the bottom of one side of the water inlet pool 1, the first reaction pool 102, the second reaction pool 103, and the third reaction pool 104. A second exhaust valve is fixedly installed on the top of the installation cover 107. A water inlet 101 is fixedly installed on one side of the water inlet pool 1. The outlet end of the water inlet 101 extends... Nitrogen delivery pipes 105 are fixedly installed on one side of the first reaction tank 102, the second reaction tank 103, and the third reaction tank 104, reaching the top of the inlet pool 1. The nitrogen delivery pipes 105 have several outlet ends that extend to the bottom of the first reaction tank 102, the second reaction tank 103, and the third reaction tank 104 respectively. The inlet end of the nitrogen delivery pipes 105 is connected to a vertical nitrogen storage tank through a pipe to provide a gas source and deliver nitrogen to the first reaction tank 102, the second reaction tank 103, and the third reaction tank 104, thereby reducing the oxygen in the first reaction tank 102, the second reaction tank 103, and the third reaction tank 104. The oxygen is discharged through the second exhaust valve to achieve an anaerobic environment.

[0031] In this example, the feeder 109 can be a screw feeder to add reagents and bacteria to the first reaction tank 102, the second reaction tank 103, and the third reaction tank 104. Specifically: the first reaction tank 102 is fed with hydrolytic acidic bacteria, such as Clostridium spp., which can secrete cellulase, protease, etc., to efficiently decompose small molecule sugars, amino acids, and other hydrolysis products in wastewater; the second reaction tank 103 is fed with acid-producing acidic bacteria, such as Lactobacillus spp., which can further convert hydrolysis products into volatile organic acids such as lactic acid and propionic acid; the third reaction tank 104 is fed with acetic acidifying acidic bacteria, such as Acetobacter spp., which can convert primary acidification products into acetic acid, treating wastewater and sludge in the wastewater under an anaerobic acidic environment.

[0032] In this example, the first motor 304, the second motor 501, and the third motor 410 can be servo motors, and the first motor 304, the second motor 501, the third motor 410, the first electric cylinder 310, the second electric cylinder 317, and the third electric cylinder 602 are all waterproofed and sealed using common methods in the prior art.

[0033] The working process and principle of this invention: Wastewater is pumped to the inlet 101 and enters the inlet pool 1 through the inlet 101. It then enters the first reaction pool 102, the second reaction pool 103 and the third reaction pool 104 through the push flow method to react. The wastewater is discharged through the drain pipe on the third reaction pool 104. The feeder 109 adds bacteria to the first reaction pool 102, the second reaction pool 103 and the third reaction pool 104 to create an anaerobic acidic environment for wastewater treatment.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] 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 staged plug-flow anaerobic acidification reactor, characterized in that, include: Water inlet tank (1), first reaction tank (102), second reaction tank (103) and third reaction tank (104); Cleaning mechanism; The cleaning mechanism is respectively installed in the water inlet pool (1), the first reaction pool (102), the second reaction pool (103) and the third reaction pool (104). The cleaning mechanism cleans the residual sludge inside the water inlet pool (1), the first reaction pool (102), the second reaction pool (103) and the third reaction pool (104) through the movable frame (3), the mounting frame (308), the connecting frame (312) and the nozzle (313). A mixing mechanism is provided on the movable frame (3). The mixing mechanism stirs the sewage in the first reaction tank (102), the second reaction tank (103) and the third reaction tank (104) through the mounting shell (4) and a plurality of stirring rods (408). A fixing mechanism is provided on the mounting frame (308), and the fixing mechanism fixes the position of the mounting frame (308) on the movable frame (3) by means of a fixing plate (319) thereon.

2. The staged plug-flow anaerobic acidification reactor according to claim 1, characterized in that: The cleaning mechanism includes several movable frames (3), slide rails (307), mounting frames (308), two first sealing shells (309), a first electric cylinder (310), a rotating block (311), a connecting frame (312), a nozzle (313), and a water supply pipe (315). Several movable frames (3) are slidably installed inside the water inlet pool (1), the first reaction pool (102), the second reaction pool (103), and the third reaction pool (104). The slide rails (307) are fixedly installed on both sides of the corresponding movable frames (3), with one side of the slide rails (307) extending into the interior of the movable frames (3). The mounting frames (308) are slidably installed on the inner wall of the movable frames (3), with both sides of the mounting frames (308) slidably installed on the corresponding slide rails (307). The top of the mounting frames (308) has an opening. The first fixed groove and the second fixed groove, the two first sealing shells (309) are fixedly installed on one side of the first fixed groove wall, the first electric cylinder (310) is fixedly installed inside the first sealing shell (309), the output end of the first electric cylinder (310) extends to the outside of the bottom end of the first sealing shell (309), the connecting frame (312) is rotatably installed on the opposite sides of the first fixed groove wall, the rotating block (311) is rotatably installed on both sides of the connecting frame (312), one end of the rotating block (311) is fixedly installed on the corresponding output end of the first electric cylinder (310), the nozzle (313) is fixedly installed on the bottom of the connecting frame (312), the top of the connecting frame (312) is fixedly installed with a connection port, and one end of the water supply pipe (315) is fixedly installed on one end of the connection port.

3. A staged plug-flow anaerobic acidification reactor according to claim 2, characterized in that: The top of the water inlet pool (1), the first reaction pool (102), the second reaction pool (103) and the third reaction pool (104) are fixedly installed with several brackets (2). Several limiting rods (201) are fixedly installed on the inner wall of the brackets (2). The top two sides of the movable frame (3) are fixedly installed with mounting plates (301). Several protrusions are fixedly installed on one side of the mounting plate (301). The upper and lower ends of the protrusions are respectively fixedly installed with first fixing parts (302) and second fixing parts (303). The first fixing parts (302) and the second fixing parts (303) form a ring. Several ball grooves are opened in the inner ring of the first fixing parts (302) and the second fixing parts (303). Balls are rotatably installed on the groove wall of the ball groove. The connected first fixing parts (302) and the second fixing parts (303) are slidably installed on the outer wall of the corresponding limiting rods (201).

4. A staged plug-flow anaerobic acidification reactor according to claim 2, characterized in that: The top of the mobile frame (3) is fixedly equipped with several first motors (304), the output end of the first motors (304) is fixedly equipped with a first turntable (305), the outer wall of the first turntable (305) is fixedly equipped with a first steel cable (306), the other end of the first steel cable (306) is fixedly installed on the top of the mounting frame (308), the bottom of the mobile frame (3) is equipped with several pulleys (316), and a scraper (320) is fixedly installed on one side of the bottom of the mounting frame (308).

5. A staged plug-flow anaerobic acidification reactor according to claim 2, characterized in that: Fixed frames (5) are fixedly installed on both sides of the water inlet pool (1), the first reaction pool (102), the second reaction pool (103) and the third reaction pool (104). A second motor (501) is fixedly installed at the bottom of the inner wall of the fixed frame (5). A second turntable (502) is fixedly installed at the output end of the second motor (501). A second steel cable (503) is fixedly installed on the outer wall of the second turntable (502). A connecting port is opened on one side of the fixed frame (5). One end of the second steel cable (503) extends through the connecting port to the outside of the fixed frame (5). A number of limiting wheels (504) are installed on one side of the inner wall of the fixed frame (5). The second steel cable (503) is located on the outer wall of the corresponding limiting wheel (504). One end of the second steel cable (503) extending to the outside of the fixed frame is fixedly installed on the side wall of the corresponding moving frame (3).

6. A staged plug-flow anaerobic acidification reactor according to claim 2, characterized in that: The mixing mechanism includes a mounting shell (4), a mounting groove (401), two mounting ports (402), several first mounting shafts (403), a first connecting plate (404), a second connecting plate (405), a first belt (406), several second mounting shafts (407), a stirring rod (408), a second belt (409), and a third motor (410). The mounting shell (4) is fixedly installed on the wall of the first mounting groove. The two mounting grooves (401) are opened in the middle of the mounting shell (4). The two mounting ports (402) are opened at the upper and lower ends of one side of the mounting shell (4). Several first mounting shafts (403) are rotatably installed on the upper and lower ends of the inner wall of the mounting groove (401). The first connecting plate (404) and the second connecting plate (405) are fixedly installed on the outer wall of the first mounting shaft (403). The first belt (406) 406) Installed on the outer wall of the corresponding first connecting plate (404) and second connecting plate (405), the two ends of the first mounting shaft (403) extend to the interior of the corresponding mounting port (402), the third motor (410) is fixedly installed on the inner wall of the mounting groove (401), the output end of the third motor (410) is fixedly installed on the third connecting plate, the second belt (409) is installed on the outer wall of the third connecting plate, the other end of the second belt (409) is installed on the outer wall of the second connecting plate (405) on one of the first mounting shafts (403), the second mounting shaft (407) is rotatably installed on the upper and lower ends of the inner wall of the mounting port (402), the second mounting shaft (407) is fixedly connected to one end of the corresponding first mounting shaft (403), and the stirring rod (408) is fixedly installed on the outer wall of the second mounting shaft (407).

7. A staged plug-flow anaerobic acidification reactor according to claim 2, characterized in that: The fixing mechanism includes a second electric cylinder (317), a limiting frame (318), and a fixing plate (319). The mounting frame (308) has several moving slots on both sides. The second electric cylinder (317) is fixedly installed on the wall of the moving slot. The limiting frame (318) is fixedly installed on the wall of the moving slot. The fixing plate (319) is fixedly installed on the output end of the second electric cylinder (317). The fixing plate (319) is slidably installed on the inner wall of the limiting frame (318).

8. A staged plug-flow anaerobic acidification reactor according to claim 1, characterized in that: A notch is provided between the water inlet pool (1) and the first reaction pool (102), the first reaction pool (102) and the second reaction pool (103), the second reaction pool (103) and the third reaction pool (104), and a fixed frame (6) is fixedly installed at the corresponding notch. A second sealing shell (601) is fixedly installed on the top of the fixed frame (6), and a third electric cylinder (602) is fixedly installed on the inner wall of the second sealing shell (601). The output end of the third electric cylinder (602) extends to the inner ring of the fixed frame (6), and a baffle (605) is fixedly installed on the output end of the third electric cylinder (602). The baffle (605) is slidably installed on the inner wall of the fixed frame (6). An air inlet (603) is fixedly installed on one side of the second sealing shell (601), and a first exhaust valve (604) is fixedly installed on the other side of the second sealing shell (601).

9. A staged plug-flow anaerobic acidification reactor according to claim 1, characterized in that: An installation frame (106) is welded and fixed to the outer wall of the water inlet pool (1), the first reaction pool (102), the second reaction pool (103) and the third reaction pool (104). An installation cover (107) is fixedly installed on the top of the installation frame (106). An exhaust pipe (108) is fixedly installed on the top of the installation cover (107). Several feeding machines (109) are fixedly installed on one side of the outer wall of the installation cover (107). The outlet end of the feeding machine (109) extends to the top of the interior of the first reaction pool (102), the second reaction pool (103) and the third reaction pool (104) respectively. A drain pipe is fixedly installed at the bottom of one side of the water inlet pool (1), the first reaction pool (102), the second reaction pool (103) and the third reaction pool (104). A second exhaust valve is fixedly installed on the top of the installation cover (107).

10. A staged plug-flow anaerobic acidification reactor according to claim 1, characterized in that: A water inlet (101) is fixedly installed on one side of the water inlet pool (1), and the outlet end of the water inlet (101) extends to the top of the water inlet pool (1). A nitrogen gas delivery pipe (105) is fixedly installed on one side of the first reaction pool (102), the second reaction pool (103) and the third reaction pool (104). The nitrogen gas delivery pipe (105) has several outlet ends that extend to the bottom of the first reaction pool (102), the second reaction pool (103) and the third reaction pool (104) respectively.

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