A metal catalyst-based device for treating antibiotics in aquaculture wastewater

Abstract

The present application relates to the field of aquaculture wastewater treatment, and discloses an antibiotic treatment equipment for aquaculture wastewater based on a metal catalyst, which comprises a sewage treatment tank, a treatment cylinder, a water outlet pipeline, an exhaust pipe, a support frame, a sewage inlet, a rotating frame, a solid particle fixed bed, an air pipeline, an aeration disc and the like; the support frame is fixedly connected in the sewage treatment tank; the treatment cylinder is fixedly connected to the support frame; and the treatment cylinder is used for treating filtered aquaculture wastewater. The treatment cylinder is divided into a wastewater treatment chamber and a backwashing chamber; the solid particle fixed bed does not need to be cleaned during shutdown; the used solid particle fixed bed can be backwashed while filtering wastewater; the equipment can continuously treat aquaculture wastewater; and the aeration disc injects ozone mixed gas into the treatment cylinder during the treatment of aquaculture wastewater, so as to ensure the treatment effect of the aquaculture wastewater.

Description

Technical Field

[0001] This invention relates to the field of aquaculture wastewater treatment, and more particularly to an antibiotic treatment device for aquaculture wastewater based on a metal catalyst. Background Technology

[0002] In modern aquaculture production, in order to prevent and control diseases and improve the survival rate of livestock, veterinary antibiotics such as tetracycline and fluoroquinolones are routinely administered. A large amount of antibiotics that are not metabolized and absorbed by organisms are directly discharged with aquaculture wastewater, causing antibiotic residue pollution in water bodies.

[0003] Aquaculture wastewater is characterized by complex pollutant composition, high levels of organic colloids and suspended impurities, and large fluctuations in antibiotic concentrations. Long-term discharge can easily lead to eutrophication and the evolution of antibiotic resistance in aquatic flora, threatening the aquatic ecological balance and human drinking water safety. Currently, mainstream technologies for antibiotic treatment in aquaculture wastewater include biodegradation, physical adsorption, conventional oxidation, and combined advanced oxidation technologies. Among these, advanced oxidation technologies, with their advantages of wide pH adaptability, no secondary pollution, and high degradation efficiency, have become the mainstream research and application direction for the deep treatment of antibiotics in aquaculture wastewater. Metal-catalyzed ozone oxidation, as a typical advanced oxidation process, can catalyze ozone to generate strong oxidizing hydroxyl radicals through metal catalysts, efficiently breaking the chemical bonds of antibiotic molecules and achieving the harmless degradation of antibiotics. Compared with traditional processes, it has significant technical advantages and is gradually being promoted and applied in the field of deep treatment of aquaculture wastewater.

[0004] Existing wastewater treatment equipment lacks pre-filtering and self-cleaning mechanisms. Impurities such as feed residue, biological hair, and organic flocs in aquaculture wastewater can easily enter the catalytic reaction chamber, rapidly covering the active sites of the metal catalyst. This also easily clogs the fixed bed pores, significantly reducing catalytic oxidation efficiency and wastewater throughput. Secondly, conventional catalytic treatment equipment requires shutdown and backwashing after the fixed bed becomes clogged, interrupting wastewater treatment operations and significantly reducing continuous operating time. Furthermore, existing ozone aeration structures are mostly fixed-point aeration, resulting in uneven contact between the ozone mixture, metal catalyst, and aquaculture wastewater. This limits the generation efficiency of hydroxyl radicals and leads to insufficient antibiotic degradation, resulting in excessive antibiotic residues in aquaculture wastewater. Summary of the Invention

[0005] To overcome the shortcomings of existing equipment, which mostly require shutdown before backwashing the fixed bed and the uneven contact between the ozone mixture and the metal catalyst during fixed-point aeration, thus affecting the antibiotic oxidation and degradation effect, the technical problem to be solved is: to provide an antibiotic treatment device for aquaculture wastewater based on a metal catalyst.

[0006] The technical solution of the present invention is as follows: an antibiotic treatment device for aquaculture wastewater based on a metal catalyst, comprising a wastewater treatment tank, a support frame fixedly connected inside the wastewater treatment tank, a treatment cylinder fixedly connected to the support frame, a water outlet pipe opened on the treatment cylinder, an exhaust pipe opened at the top of the treatment cylinder, a wastewater inlet opened at the bottom of the treatment cylinder, the wastewater inlet being connected to a water pump, a rotating frame rotatably connected in a sealed manner inside the treatment cylinder, a solid particle fixed bed symmetrically fixed inside the rotating frame, an air vent pipe fixedly connected inside the wastewater treatment tank, an aeration disc rotatably connected in a sealed manner inside the treatment cylinder, an aeration membrane installed on the aeration disc, and the aeration disc being connected to the air vent pipe.

[0007] Preferably, the system further includes an air pump installed inside the wastewater treatment tank. The air pump is connected to the ventilation pipe, which is equipped with a solenoid valve. A connecting ring is rotatably and sealingly connected to the outlet of the ventilation pipe. The connecting ring is fixedly connected to the aeration disc. A first crossbar is fixedly connected inside the ventilation pipe. A rotating rod is rotatably connected to the first crossbar. A fan is fixedly connected to the rotating rod. A second crossbar is fixedly connected to the top of the rotating rod and is fixedly connected to the aeration disc.

[0008] Preferably, it further includes a fixed partition plate, which is fixedly connected inside the processing cylinder and divides the processing cylinder into two chambers. Two sets of solid particle fixed beds are symmetrically arranged in the rotating frame. A rotating partition plate is rotatably connected inside the processing cylinder in a sealed manner. The edge of the rotating partition plate is slidably fitted to the inner wall of the processing cylinder in a sealed manner. The rotating partition plate is fixedly connected to the rotating frame. A backwash water inlet is opened at the top of the processing cylinder, and a backwash water outlet is opened at the bottom of the processing cylinder.

[0009] Preferably, it also includes a water pressure sensor. A rectangular groove is provided on the side wall of the treatment cylinder. The water pressure sensor is installed in the rectangular groove on the side wall of the treatment cylinder. A rotating shaft is rotatably connected to the treatment cylinder in a sealed manner. The rotating shaft is fixedly connected to the rotating partition. A rotating gear is fixedly connected to the bottom of the rotating shaft. An electric push rod is installed at the bottom of the sewage treatment tank. A fixed guide rail is fixedly connected inside the sewage treatment tank. A U-shaped slider is slidably connected inside the fixed guide rail. The telescopic rod of the electric push rod is fixedly connected to the U-shaped slider. A straight rack is fixedly connected to the U-shaped slider.

[0010] Preferably, it further includes a V-shaped guide groove, which is fixedly connected to the U-shaped slider. A rectangular slot is provided on the rotating partition. A U-shaped limiting rod is slidably connected inside the processing cylinder. The two ends of the U-shaped limiting rod are columnar, and the top of the columnar structure is prismatic. The U-shaped limiting rod is inserted into the rectangular slot. A guide frame is fixedly connected to the bottom of the processing cylinder. The columnar structures at both ends of the U-shaped limiting rod are slidably connected to the guide frame. A sliding round rod is fixedly connected to the bottom of the U-shaped limiting rod. The sliding round rod is slidably disposed in the V-shaped guide groove.

[0011] Preferably, the system further includes a front-end filter tank, which is installed inside the wastewater treatment tank. The front-end filter tank has an inlet for aquaculture wastewater. A drive screw is rotatably connected to the outside of the front-end filter tank. A drive motor is installed on the front-end filter tank. The drive screw and the output shaft of the drive motor are connected through a transmission shaft. A sliding plate is slidably connected to the front-end filter tank. The sliding plate is threadedly connected to the drive screw. A lifting grid plate is slidably connected inside the sliding plate.

[0012] Preferably, the system further includes side guide grooves located at both ends of the front-end filter tank. A sliding rod is slidably connected inside the sliding plate. The top of the sliding rod passes through the sliding plate and is fixedly connected to the lifting grid plate. A movable wedge block is fixedly connected to the bottom of the sliding rod. A lifting inclined surface is provided inside the side guide groove. The lifting inclined surface cooperates with the movable wedge block. A slag discharge inclined surface is provided inside the front-end filter tank. A waste shovel plate is installed at the bottom of the lifting grid plate. A rotating shaft is fixedly connected inside the lifting grid plate. The waste shovel plate is rotatably connected to the rotating shaft.

[0013] Preferably, it further includes a triangular scraper and a cleaning scraper block, the triangular scraper and the cleaning scraper block being fixedly connected to the sliding plate, and the triangular scraper being in contact with the outer surface of the lifting grid plate.

[0014] Preferably, it also includes a waste residue recycling bin, which is installed inside the sewage treatment tank. A downward pressure spring is provided between the movable wedge block and the sliding plate, and a downward pressure torsion spring is provided between the waste shovel plate and the lifting grid plate.

[0015] The present invention has the following advantages: 1. The present invention divides the treatment cylinder into a wastewater treatment chamber and a backwashing chamber. The solid particle fixed bed does not need to be stopped for cleaning. While filtering wastewater, the solid particle fixed bed that has been used can be backwashed, so that the equipment can continuously regenerate the aquaculture wastewater and improve the regeneration processing efficiency of aquaculture wastewater.

[0016] 2. When the solid particle fixed bed needs to be cleaned, as the water pressure in the wastewater treatment chamber gradually increases, the water pressure sensor controls the electric push rod to operate, which drives the rotating gear, rotating partition and rotating frame to rotate through the rack and pinion, so as to rotate the solid particle fixed bed that has been cleaned in the backwash chamber into the wastewater treatment chamber, thereby achieving the effect of automatically changing the solid particle fixed bed.

[0017] 3. When ozone mixture is introduced into the treatment cylinder, the fan rotates under the thrust of the ozone mixture, which in turn drives the aeration disc and connecting ring to rotate. The aeration membrane rotates accordingly. The rotation of the aeration disc and aeration membrane will evenly inject the ozone mixture into the treatment cylinder, so that the ozone mixture can fully contact the metal catalyst in the solid particle fixed bed. This ensures that strong oxidizing hydroxyl radicals can be evenly generated in all parts of the solid particle fixed bed, ensuring the oxidation effect on antibiotics in aquaculture wastewater.

[0018] 4. During the initial filtration of aquaculture wastewater, impurities will settle in the front-end filter tank. As the sliding plate and its device slide along the front-end filter tank, the lifting grid and waste shovel will scrape off the sediment in the front-end filter tank and move it. As the sliding plate moves to the other end, the waste shovel will rise continuously along the slag discharge slope and eventually rotate downward to automatically discharge the filtered impurities. During the rising of the lifting grid, the triangular scraper and cleaning scraper will scrape off the impurities that adhere to or block the screen holes of the lifting grid to automatically clean the lifting grid. Furthermore, due to the presence of the downward pressure spring, the moving wedge block can apply a downward pulling force to the lifting grid through the sliding rod to prevent the lifting grid from rising due to the buoyancy of the wastewater. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the internal structure of the wastewater treatment tank of the present invention.

[0021] Figure 3 This is a schematic diagram of the internal structure of the processing cylinder after it has been cut open according to the present invention.

[0022] Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0023] Figure 5 This is a schematic diagram of the internal structure of the rotating plate of the present invention after it has been cut open.

[0024] Figure 6 This is a schematic diagram of the sliding circular rod of the present invention.

[0025] Figure 7 This is an exploded view of the structure at the U-shaped slider of the present invention.

[0026] Figure 8 This is a schematic diagram of the side guide groove of the present invention after being cut open.

[0027] Figure 9 This is a schematic diagram of the internal structure of the front-end filter tank of the present invention.

[0028] Figure 10 This is a schematic diagram of the structure of the sliding plate and the lifting grid plate of the present invention.

[0029] Figure 11 For the present invention Figure 10 Enlarged view of the structure at point B.

[0030] Figure 12 This is a schematic diagram showing the installation positions of the triangular scraper and cleaning scraper on the sliding plate of the present invention.

[0031] Figure 13 This is a schematic diagram of the structure after the rotating shaft inside the lifting grid plate of the present invention has been cut open.

[0032] The components include: 1. Sewage treatment tank; 1001. Waste residue recovery tank; 101. Treatment cylinder; 1011. Outlet pipe; 1012. Water pressure sensor; 102. Backwash water inlet; 103. Exhaust pipe; 104. Support frame; 105. Sewage inlet; 106. Backwash water outlet; 107. Rotating frame; 108. Fixed partition; 109. Solid particle fixed bed; 110. Rotating partition; 1101. Rectangular slot; 111. Rotating shaft; 112. Rotating gear; 2. Air pump; 201. Ventilation pipe; 2011. First crossbar; 2012. Rotating rod; 202. Solenoid valve; 203. Aeration disc; 2031. Connecting ring; 2032. Fan; 2033. Second crossbar. 204. Aeration membrane, 3. Electric push rod, 301. Fixed guide rail, 302. U-shaped slider, 303. V-shaped guide groove, 304. Straight rack, 305. U-shaped limit rod, 3051. Sliding round rod, 306. Guide frame, 4. Front-end filter tank, 4001. Side guide groove, 4002. Lifting inclined plane, 4003. Slag discharge inclined plane, 4004. Aquaculture wastewater inlet, 401. Water pump, 402. Drive screw, 403. Sliding plate, 4031. Triangular scraper, 4032. Cleaning scraper, 404. Sliding rod, 405. Moving wedge block, 406. Downward pressure spring, 407. Lifting grid plate, 408. Waste shovel plate, 409. Rotating shaft, 410. Downward pressure torsion spring. Detailed Implementation

[0033] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0034] Example 1: An antibiotic treatment device for aquaculture wastewater based on a metal catalyst, such as... Figures 1-13As shown, the system includes a wastewater treatment tank 1, a treatment cylinder 101, an outlet pipe 1011, an exhaust pipe 103, a support frame 104, a wastewater inlet 105, a rotating frame 107, a solid particle fixed bed 109, an air pipe 201, an aeration disc 203, an aeration membrane 204, and a water pump 401. The support frame 104 is fixedly connected inside the wastewater treatment tank 1, and the treatment cylinder 101 is fixedly connected to the support frame 104. The treatment cylinder 101 is used to treat filtered aquaculture wastewater. An outlet pipe 1011 is provided on the treatment cylinder 101, through which the treated wastewater is discharged. An exhaust pipe 103 is provided at the top of the treatment cylinder 101, passing through the wastewater treatment tank 1 and connecting to the outside. A wastewater inlet 105 is provided at the bottom of the treatment cylinder 101, connecting to the water pump 401. The filtered wastewater is injected into the treatment cylinder 101 through the sewage inlet 105. A rotating frame 107 is rotatably connected to the treatment cylinder 101 in a sealed manner. Solid particle fixed beds 109 are symmetrically fixed inside the rotating frame 107. The solid particle fixed beds 109 are filled with metal catalysts. After the metal catalysts come into contact with the ozone mixture, they catalyze the decomposition of the ozone to form hydroxyl radicals, which oxidize and degrade antibiotics and other recalcitrant organic matter. An air pipe 201 is fixed inside the sewage treatment tank 1. The inlet of the air pipe 201 is connected to the ozone mixture source. An aeration disc 203 is rotatably connected to the treatment cylinder 101 in a sealed manner. An aeration membrane 204 is installed on the aeration disc 203. The ozone mixture required in the process of treating aquaculture wastewater enters the treatment cylinder 101 through the aeration membrane 204. The aeration disc 203 is connected to the air pipe 201.

[0035] like Figure 3 and Figure 4 As shown, it also includes an air pump 2, a first crossbar 2011, a rotating rod 2012, a solenoid valve 202, a connecting ring 2031, a fan 2032, and a second crossbar 2033. An air pump 2 is installed inside the wastewater treatment tank 1, and the air pump 2 is connected to the ventilation pipe 201. The air pump 2 can inject ozone mixture into the ventilation pipe 201. A solenoid valve 202 is installed on the ventilation pipe 201, and the solenoid valve 202 is used to control the opening and closing of the ventilation pipe 201. The outlet of the ventilation pipe 201 is sealed and rotatably connected to a connecting ring 2031, which is fixedly connected to the aeration disc 203. A first crossbar 2011 is fixedly connected inside the ventilation pipe 201. A rotating rod 2012 is rotatably connected to the first crossbar 2011. A fan 2032 is fixedly connected to the rotating rod 2012. A second crossbar 2033 is fixedly connected to the top of the rotating rod 2012 and is fixedly connected to the aeration disc 203.

[0036] In the process of treating aquaculture wastewater, the wastewater is first pre-filtered to remove animal feces, feed residue, animal hair, and other impurities. Then, the filtered wastewater is pumped into the treatment cylinder 101 through the sewage inlet 105 by a water pump 401. The wastewater level in the treatment cylinder 101 gradually rises from bottom to top. During the injection of the wastewater, the solenoid valve 202 opens, and the air pump 2 injects ozone mixture into the aeration disc 203 through the ventilation pipe 201. When the ozone mixture passes through the fan 2032, it drives the fan to rotate. During the rotation of the fan 2032, the rotating rod 2012 and the second crossbar 2033 drive the aeration disc 203 and the connecting ring 2031 to rotate around the ventilation pipe 201. After entering the aeration disc 203, the ozone mixture passes through the aeration membrane 204 and is discharged into the treatment cylinder 101. Because the aeration disc 203 rotates continuously with the fan 2032, the ozone mixture passes through the aeration membrane 204 and... The ozone mixture entering the treatment cylinder 101 has an initial horizontal velocity, which ensures that the ozone mixture is evenly distributed within the treatment cylinder 101. This allows the ozone mixture to fully contact the metal catalyst within the solid particle fixed bed 109. The ozone mixture and the metal catalyst in the solid particle fixed bed 109 work together to generate strong oxidizing hydroxyl radicals. When the aquaculture wastewater rises to the height of the solid particle fixed bed 109, the generated strong oxidizing hydroxyl radicals can react with the residual antibiotics in the aquaculture wastewater, causing the antibiotics to be oxidized and degraded. After passing through the solid particle fixed bed 109, the antibiotics inside the aquaculture wastewater have been oxidized and degraded. Furthermore, the liquid level of the aquaculture wastewater treated by the solid particle fixed bed 109 continues to rise. When the treated aquaculture wastewater level rises to the outlet pipe 1011, the treated wastewater is discharged from the outlet pipe 1011, while the gas inside the treatment cylinder 101 is discharged to the outside through the exhaust pipe 103 at the top.

[0037] Example 2: Based on Example 1, such as Figure 3As shown, it also includes a backwash water inlet 102, a backwash water outlet 106, a fixed baffle 108, and a rotating baffle 110. A fixed baffle 108 is fixedly connected inside the treatment cylinder 101, dividing the treatment cylinder 101 into two chambers: a wastewater treatment chamber and a backwash chamber. Two sets of solid particle fixed beds 109 are symmetrically arranged inside the rotating frame 107. A rotating baffle 110 is rotatably connected to the treatment cylinder 101 in a sealed manner. The edge of the rotating baffle 110 is flush with the treatment cylinder. The inner wall of 101 is sealed and slides together. The rotating partition 110 is located below the rotating frame 107 and is fixedly connected to the rotating frame 107. The top of the treatment cylinder 101 is equipped with a backwash water inlet 102 corresponding to the backwash chamber, and the bottom of the treatment cylinder 101 is equipped with a backwash water outlet 106 corresponding to the backwash chamber. When it is necessary to backwash the solid particle fixed bed 109, the corresponding solid particle fixed bed 109 rotates to the backwash chamber and performs backwashing treatment.

[0038] like Figure 3 and Figures 5-7 As shown, it also includes a water pressure sensor 1012, a rotating shaft 111, a rotating gear 112, an electric push rod 3, a fixed guide rail 301, a U-shaped slider 302, and a rack 304. A rectangular groove is provided on the side wall of the processing cylinder 101, and the water pressure sensor 1012 is installed in the rectangular groove on the side wall of the processing cylinder 101. The water pressure sensor 1012 is located below the solid particle fixed bed 109. The rotating shaft 111 is rotatably connected to the processing cylinder 101 in a sealed manner. The rotating shaft 111 is fixedly connected to the rotating partition 110, and a rotating gear 112 is fixedly connected to the bottom of the rotating shaft 111. 12. An electric push rod 3 is installed at the bottom of the sewage treatment tank 1. A fixed guide rail 301 is fixedly connected inside the sewage treatment tank 1. A U-shaped slider 302 is slidably connected inside the fixed guide rail 301. The telescopic rod of the electric push rod 3 is fixedly connected to the U-shaped slider 302. Each time the electric push rod 3 is started, it will drive the U-shaped slider 302 to slide by the same length, which will enable the U-shaped slider 302 to slide along the fixed guide rail 301 to the other end. A straight rack 304 is fixedly connected to the U-shaped slider 302. The straight rack 304 can mesh with the rotating gear 112 during the movement of the U-shaped slider 302.

[0039] During the treatment of aquaculture wastewater, some metal hydroxide precipitates, as well as inorganic scale such as calcium phosphate and magnesium hydroxide, and organic quinone colloids are generated. These impurities adhere to the solid particle fixed bed 109 and cover the active sites, reducing the reaction rate and clogging the filtration gaps of the solid particle fixed bed 109, thereby reducing the speed at which aquaculture wastewater passes through the solid particle fixed bed 109. The treatment cylinder 101 is divided into a wastewater treatment chamber and a backwashing chamber by a fixed baffle 108 and a rotating baffle 110. When the wastewater is in the wastewater treatment chamber... After prolonged treatment of aquaculture wastewater by the solid particle fixed bed 109, the water passage pores within the solid particle fixed bed 109 become clogged, reducing the flow rate of the aquaculture wastewater. When the amount of aquaculture wastewater entering the treatment cylinder 101 from the filter wastewater inlet per unit time exceeds the amount of aquaculture wastewater passing through the solid particle fixed bed 109, the water pressure of the aquaculture wastewater between the solid particle fixed bed 109 and the bottom surface of the treatment cylinder 101 gradually increases. When the water pressure increases to the preset value of the water pressure sensor 1012, the water pressure sensor 1012 controls the electric push rod 3 to start. The movable push rod 3 drives the U-shaped slider 302 to slide along the fixed guide rail 301 to the other end. During the sliding process, the U-shaped slider 302 drives the rotating gear 112 and the rotating shaft 111 to rotate through the rack 304. During the rotation of the rotating shaft 111, the rotating frame 107 is driven to rotate through the rotating partition 110. When the rack 304 has completely passed the rotating gear 112, the rotating gear 112 drives the rotating shaft 111, the rotating partition 110 and the rotating frame 107 to rotate 180 degrees, so that the solid particles in the wastewater treatment chamber and the backwash chamber are removed. The positions of the fixed beds 109 are exchanged. When the new solid particle fixed bed 109 rotates into the wastewater treatment chamber, the speed of the aquaculture wastewater passing through the solid particle fixed bed 109 increases. The water pressure between the solid particle fixed bed 109 and the bottom surface of the treatment cylinder 101 in the wastewater treatment chamber returns to normal. After the blocked solid particle fixed bed 109 rotates into the backwash chamber, backwash water is first injected from the backwash water inlet 102 to backwash the solid particle fixed bed 109. The flushed water flows out from the backwash water outlet 106.

[0040] Example 3: Based on Example 2, such as Figure 6 and Figure 7As shown, it also includes a rectangular slot 1101, a V-shaped guide groove 303, a U-shaped limiting rod 305, a sliding round rod 3051, and a guide frame 306. The V-shaped guide groove 303 is fixedly connected to the U-shaped slider 302. The rectangular slot 1101 is opened on the rotating partition 110. The U-shaped limiting rod 305 is slidably connected to the inside of the processing cylinder 101. The two ends of the U-shaped limiting rod 305 extend upward in a columnar shape, and the top of the columnar structure is prismatic. The U-shaped limiting rod 305 is inserted into the rectangular slot 110 on the rotating partition 110. The U-shaped limiting rod 305 is slidably connected to the guide frame 306 at the bottom of the processing cylinder 101. The columnar structures at both ends of the U-shaped limiting rod 305 are slidably connected to the guide frame 306 in a sealed manner. The U-shaped limiting rod 305 passes through the guide frame 306 and is slidably connected to it. A sliding round rod 3051 is fixedly connected to the bottom of the U-shaped limiting rod 305. The sliding round rod 3051 is slidably set in the V-shaped guide groove 303. During the movement of the V-shaped guide groove 303, the U-shaped limiting rod 305 can be driven to move up and down through the sliding round rod 3051.

[0041] To prevent the rotating baffle 110 from rotating due to water flow impact, a U-shaped limiting rod 305 is inserted into a rectangular slot 1101 on the rotating baffle 110 during wastewater treatment. When the electric push rod 3 is activated, it drives the V-shaped guide groove 303 to move via the U-shaped slider 302. As the V-shaped guide groove 303 moves, it first pulls the U-shaped limiting rod 305 downwards along the rotating baffle 110 and guide frame 306 via the sliding round rod 3051. Only after the U-shaped limiting rod 305 slides out of the rotating baffle 110 will the rack 304 mesh with the rotating gear 112. After the rack 304 drives the rotating gear 112 to rotate 180 degrees... The V-shaped guide groove 303 continues to move with the U-shaped slider 302 and pushes the U-shaped limiting rod 305 upward along the guide frame 306 and back into the rectangular slot 1101 on the rotating partition 110. Since the top of the upward-extending part of the U-shaped limiting rod 305 is prismatic, when the U-shaped limiting rod 305 rises, after the inclined surface of its top prismatic part contacts the rectangular slot 1101, the U-shaped limiting rod 305 adjusts the position of the rotating partition 110 through the rectangular slot 1101. After the U-shaped limiting rod 305 rises and resets, it can re-limit the position of the rotating partition 110 and the rotating frame 107.

[0042] like Figure 2 , Figure 8 and Figure 9As shown, it also includes a front-end filter tank 4, an aquaculture wastewater inlet 4004, a drive screw 402, a sliding plate 403, and a lifting grid 407. The front-end filter tank 4 is installed inside the sewage treatment tank 1. The aquaculture wastewater inlet 4004 is opened on the front-end filter tank 4. The aquaculture wastewater inlet 4004 passes through the sewage treatment tank 1 and is connected to the outside. The drive screw 402 is rotatably connected to the front-end filter tank 4. A drive motor is installed on the front-end filter tank 4. The drive screw 402 is connected to the output shaft of the drive motor through a transmission shaft. The sliding plate 403 is slidably connected to the front-end filter tank 4. The sliding plate 403 is threadedly connected to the drive screw 402. The lifting grid 407 is slidably connected inside the sliding plate 403. The lower end of the lifting grid 407 is located inside the front-end filter tank 4 to perform preliminary filtration of the aquaculture wastewater in the front-end filter tank 4.

[0043] like Figure 8 , Figure 9 and Figure 13 As shown, it also includes a side guide groove 4001, a lifting inclined surface 4002, a slag discharge inclined surface 4003, a sliding rod 404, a movable wedge block 405, a waste shovel plate 408, and a rotating shaft 409. Side guide grooves 4001 are provided at both ends of the front-end filter tank 4. A sliding rod 404 is slidably connected inside the sliding plate 403. The top of the sliding rod 404 passes through the sliding plate 403 and is fixedly connected to the lifting grid plate 407. A movable wedge block 405 is fixedly connected to the bottom of the sliding rod 404. A lifting inclined surface 4002 is provided inside the side guide groove 4001. The lifting inclined surface 4002 and the movable wedge block 405 cooperate with each other. The front-end filter tank 4 is equipped with... There is a slag discharge slope 4003. The contact position between the slag discharge slope 4003 and the bottom surface of the front-end filter tank 4 is an arc surface. The slag discharge slope 4003 first rises to the highest point and then slopes down. The slope of the slag discharge slope 4003 is greater than the slope of the lifting slope 4002. A waste shovel 408 is installed at the bottom of the lifting grid plate 407. The waste shovel 408 is in contact with the bottom surface of the front-end filter tank 4. The front part of the waste shovel 408 is an inclined shovel surface. The waste shovel 408 can remove the waste adhering to the bottom surface of the front-end filter tank 4. A rotating shaft 409 is fixedly connected inside the lifting grid plate 407. The waste shovel 408 is rotatably connected to the rotating shaft 409.

[0044] The aquaculture wastewater is first injected into the front-end filter tank 4 through the aquaculture wastewater inlet 4004. After passing through the lifting screen 407, the wastewater is filtered out by the lifting screen 407, removing feces, feed, animal hair, and other debris. Some debris settles and accumulates at the bottom of the front-end filter tank 4. After a certain period of filtration, a large amount of debris accumulates in the front-end filter tank 4 and on the lifting screen 407. To prevent a decrease in filtration efficiency, the drive motor is started. The drive motor drives the drive screw 402 to rotate, which in turn drives the sliding plate 403 to slide along the front-end filter tank 4. The lifting screen 407 and its components move accordingly, and the waste shovel 408... During the movement, debris adhering to the bottom surface of the front-end filter tank 4 will be removed. The lifting grid 407 will also scrape away debris adhering to the inner wall of the front-end filter tank 4 as it moves. As the lifting grid 407 and waste shovel 408 move continuously, the removed debris will move along with them. When the front end of the waste shovel 408 contacts the arc surface connecting the front-end filter tank 4 and the slag discharge slope 4003, as the sliding plate 403 and the lifting grid 407 continue to move, the waste shovel 408 will rotate upwards around the rotation axis 111 and rise along the slag discharge slope 4003. When the bottom surface of the waste shovel 408 contacts the slag discharge slope... When the sliding plate 403 is in contact with the lifting inclined surface 4002, the moving wedge block 405 is in contact with the lifting inclined surface 4002. As the sliding plate 403 continues to move, the moving wedge block 405 rises along the lifting inclined surface 4002. During the rise of the moving wedge block 405, it will drive the lifting grid plate 407 to rise, and the waste shovel plate 408 will rise along the slag discharge inclined surface 4003. At the same time, the waste shovel plate 408 will drive the debris in the front-end filter tank 4 to rise. When the moving wedge block 405 rises to the highest point, the lifting grid plate 407 will also rise to the highest point. At this time, the bottom surface of the waste shovel plate 408 will disengage from the slag discharge inclined surface 4003, and the waste shovel plate 408 will no longer be affected by the slag discharge inclined surface 4002. Supported by 03, the waste shovel 408 will rotate downward around the rotating shaft 409 to the downward inclined part of the slag discharge slope 4003. At this time, the sliding plate 403 has not yet moved to the end of the drive screw 402. As the sliding plate 403 continues to move, the moving wedge block 405 slides along the top plane of the front filter tank 4. The waste shovel 408 continues to rotate downward around the rotating shaft 409 to increase the inclination angle of the waste shovel 408, so that the waste residue in the waste shovel 408 can be smoothly poured out downward. Then the drive motor drives the drive screw 402 to rotate in the opposite direction. The sliding plate 403 and its device are driven by the drive screw 402 to slide and reset in the opposite direction along the front filter tank 4.

[0045] like Figure 12As shown, it also includes a triangular scraper 4031 and a cleaning scraper 4032. The triangular scraper 4031 and the cleaning scraper 4032 are fixedly connected to the sliding plate 403. The triangular scraper 4031 is attached to the outer surface of the lifting grid plate 407, and the cleaning scraper 4032 is located in the filter pores of the lifting grid plate 407 to clean the filter pores of the lifting grid plate 407.

[0046] As the lifting grid plate 407 rises along the sliding plate 403, the triangular scraper 4031 scrapes away the debris adhering to the surface of the lifting grid plate 407, and the cleaning scraper 4032 scrapes away the debris clogging the filter holes of the lifting grid plate 407, thus realizing the function of cleaning the lifting grid plate 407 during its rise.

[0047] like Figure 2 , Figure 10 and Figure 13 As shown, it also includes a waste residue recycling box 1001, a downward pressure spring 406, and a downward pressure torsion spring 410. The waste residue recycling box 1001 is installed inside the sewage treatment tank 1. The waste residue recycling box 1001 is located at the end outside the front-end filter tank 4 away from the treatment cylinder 101. A downward pressure spring 406 is provided between the moving wedge block 405 and the sliding plate 403. The two ends of the downward pressure spring 406 abut against the moving wedge block 405 and the sliding plate 403, respectively. A downward pressure torsion spring 410 is provided between the waste shovel plate 408 and the lifting grid plate 407. The downward pressure torsion spring 410 is sleeved on the rotating shaft 409. The two ends of the downward pressure torsion spring 410 are fixed to the waste shovel plate 408 and the lifting grid plate 407, respectively. When the waste shovel plate 408 is located inside the front-end filter tank 4, the downward pressure torsion spring 410 is always in a deformed state and applies a downward force to the waste shovel plate 408, so that the waste shovel plate 408 can stick tightly to the bottom surface of the front-end filter tank 4.

[0048] When the movable wedge block 405 and the lifting grid plate 407 are located in the front-end filter tank 4, the downward pressure spring 406 applies downward pressure to the movable wedge block 405, allowing the movable wedge block 405 and the lifting grid plate 407 to sink into the front-end filter tank 4, preventing the lifting grid plate 407 from rising due to the buoyancy of the wastewater. Furthermore, during the reverse movement and reset of the movable wedge block 405, the downward pressure spring 406 can push the movable wedge block 405 back down along the lifting ramp 4002 into the side guide groove 4001, and the lifting grid plate 407 subsequently slides down into the front-end filter tank 4. Due to the presence of the downward pressure torsion spring 410, the waste shovel plate 408 moves along the front-end filter tank 4. During the process, the waste shovel plate 408 can always be in contact with the bottom surface of the front-end filter tank 4 to ensure that the waste shovel plate 408 can remove the debris adhering to the bottom surface of the front-end filter tank 4. When the waste shovel plate 408 rises to the highest point of the slag discharge slope 4003, under the action of the downward pressure torsion spring 410, the waste shovel plate 408 is driven by the downward pressure torsion spring 410 and can rotate smoothly downward. The debris in the waste shovel plate 408 will fall into the waste residue recycling box 1001 after sliding down. After a certain period of time, the worker will pull the waste residue recycling box 1001 out and clean the debris in it. After cleaning, the waste residue recycling box 1001 will be pushed back into the sewage treatment tank 1.

[0049] First, the aquaculture wastewater is added to the front-end filter tank 4. When the wastewater passes through the sieve holes on the lifting grid plate 407 in the front-end filter tank 4, most of the debris, such as animal feces, leftover feed, and animal hair, will be blocked by the lifting grid plate 407 and remain in the front-end filter tank 4. When it is necessary to clean the debris deposited in the front-end filter tank 4, the drive motor is started. The drive motor drives the drive screw 402 to rotate, and the drive screw 402 rotates and drives the sliding plate 403 to slide along the front-end filter tank 4. The lifting grid plate 407 and its device move accordingly. During the movement of the waste shovel plate 408, it will remove the debris adhering to the bottom surface of the front-end filter tank 4. During the movement of the lifting grid plate 407, it will also scrape off the debris adhering to the inner side wall of the front-end filter tank 4. When the front end of the waste shovel plate 408 contacts the arc surface connecting the front-end filter tank 4 and the slag discharge slope 4003, as the sliding plate 403 and the lifting grid plate 407 continue to move, the waste shovel plate 408 will rotate upward around the rotation axis 111. As the material rises along the slag discharge slope 4003, the bottom surface of the waste shovel plate 408 comes into contact with the slag discharge slope 4003, and the moving wedge block 405 comes into contact with the lifting slope 4002. As the sliding plate 403 continues to move, the moving wedge block 405 rises along the lifting slope 4002. During the rise of the moving wedge block 405, it will drive the lifting grid plate 407 to rise, and the waste shovel plate 408 will rise along the slag discharge slope 4003. At the same time as the waste shovel plate 408 rises, it will also drive the impurities in the front-end filter tank 4 to rise. As the material rises, when the moving wedge block 405 rises to its highest point, the lifting grid plate 407 also rises to its highest point. At this time, the bottom surface of the waste shovel plate 408 disengages from the slag discharge slope 4003. Under the action of the downward pressure torsion spring 410, the waste shovel plate 408 rotates downward and discharges the waste inside downward. The waste falls into the waste recycling box 1001. Every certain period of time, the workers pull the waste recycling box 1001 out and clean the debris inside.The filtered aquaculture wastewater is pumped into the treatment cylinder 101 by water pump 401. Simultaneously, air pump 2 injects ozone mixture into the treatment cylinder 101 through air pipe 201 and aeration disc 203. The ozone mixture reacts with the metal catalyst in the solid particle fixed bed 109 to generate strong oxidizing hydroxyl radicals, which oxidize and degrade the antibiotics in the aquaculture wastewater. The treated aquaculture wastewater is discharged from the outlet pipe 1011 at the top of the treatment cylinder 101. When the solid particle fixed bed 109 becomes clogged, the water pressure sensor 1012 senses an increase in water pressure and activates the electric push rod 3, which pulls... The movable U-shaped slider 302 slides along the fixed guide rail 301. During the sliding process, the U-shaped slider 302 drives the rotating gear 112 and the rotating shaft 111 to rotate via the rack 304. The rotating partition 110 and the rotating frame 107 rotate accordingly, rotating the cleaned solid particle fixed bed 109 into the wastewater treatment chamber for further wastewater treatment. After the clogged solid particle fixed bed 109 rotates into the backwash chamber, backwash water is first injected through the backwash water inlet 102 to backwash the solid particle fixed bed 109. The rinsed water flows out from the backwash water outlet 106.

[0050] Those skilled in the art should understand that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. An antibiotic treatment device for aquaculture wastewater based on a metal catalyst, comprising a wastewater treatment tank (1), a support frame (104) fixedly connected inside the wastewater treatment tank (1), a treatment cylinder (101) fixedly connected to the support frame (104), an outlet pipe (1011) provided on the treatment cylinder (101), an exhaust pipe (103) provided at the top of the treatment cylinder (101), and a wastewater inlet (105) provided at the bottom of the treatment cylinder (101), the wastewater inlet (105) being connected to a water pump (401), characterized in that: It also includes a rotating frame (107), which is rotatably and sealed inside the treatment cylinder (101). A solid particle fixed bed (109) is symmetrically fixed inside the rotating frame (107). An air duct (201) is fixed inside the sewage treatment tank (1). An aeration disc (203) is rotatably and sealed inside the treatment cylinder (101). An aeration membrane (204) is installed on the aeration disc (203). The aeration disc (203) is connected to the air duct (201).

2. The antibiotic treatment equipment for aquaculture wastewater based on a metal catalyst as described in claim 1, characterized in that: It also includes an air pump (2), which is installed inside the sewage treatment tank (1). The air pump (2) is connected to the ventilation pipe (201). A solenoid valve (202) is installed on the ventilation pipe (201). A connecting ring (2031) is rotatably connected to the outlet of the ventilation pipe (201). The connecting ring (2031) is fixedly connected to the aeration disc (203). A first crossbar (2011) is fixedly connected inside the ventilation pipe (201). A rotating rod (2012) is rotatably connected to the first crossbar (2011). A fan (2032) is fixedly connected to the rotating rod (2012). A second crossbar (2033) is fixedly connected to the top of the rotating rod (2012). The second crossbar (2033) is fixedly connected to the aeration disc (203).

3. The antibiotic treatment equipment for aquaculture wastewater based on a metal catalyst as described in claim 2, characterized in that: It also includes a fixed partition (108), which is fixedly connected inside the processing cylinder (101). The fixed partition (108) divides the processing cylinder (101) into two chambers. Two sets of solid particle fixed beds (109) are symmetrically arranged inside the rotating frame (107). A rotating partition (110) is rotatably connected inside the processing cylinder (101). The edge of the rotating partition (110) is slidably fitted to the inner wall of the processing cylinder (101). The rotating partition (110) is fixedly connected to the rotating frame (107). A backwash water inlet (102) is opened at the top of the processing cylinder (101), and a backwash water outlet (106) is opened at the bottom of the processing cylinder (101).

4. The antibiotic treatment equipment for aquaculture wastewater based on a metal catalyst as described in claim 3, characterized in that: It also includes a water pressure sensor (1012). A rectangular groove is provided on the side wall of the treatment cylinder (101). The water pressure sensor (1012) is installed in the rectangular groove on the side wall of the treatment cylinder (101). A rotating shaft (111) is rotatably connected to the treatment cylinder (101). The rotating shaft (111) is fixedly connected to the rotating partition (110). A rotating gear (112) is fixedly connected to the bottom of the rotating shaft (111). An electric push rod (3) is installed at the bottom of the sewage treatment tank (1). A fixed guide rail (301) is fixedly connected to the sewage treatment tank (1). A U-shaped slider (302) is slidably connected to the fixed guide rail (301). The telescopic rod of the electric push rod (3) is fixedly connected to the U-shaped slider (302). A straight rack (304) is fixedly connected to the U-shaped slider (302).

5. The antibiotic treatment equipment for aquaculture wastewater based on a metal catalyst as described in claim 4, characterized in that: It also includes a V-shaped guide groove (303), which is fixed to the U-shaped slider (302). A rectangular slot (1101) is provided on the rotating partition (110). A U-shaped limiting rod (305) is slidably connected inside the processing cylinder (101). The two ends of the U-shaped limiting rod (305) are columnar, and the top of the columnar structure is prismatic. The U-shaped limiting rod (305) is inserted into the rectangular slot (1101). A guide frame (306) is fixed to the bottom of the processing cylinder (101). The columnar structures at both ends of the U-shaped limiting rod (305) are slidably connected to the guide frame (306). A sliding round rod (3051) is fixed to the bottom of the U-shaped limiting rod (305). The sliding round rod (3051) is slidably disposed in the V-shaped guide groove (303).

6. The antibiotic treatment equipment for aquaculture wastewater based on a metal catalyst as described in claim 1, characterized in that: It also includes a front-end filter tank (4), which is installed inside the sewage treatment tank (1). The front-end filter tank (4) has an aquaculture wastewater inlet (4004) inside. A drive screw (402) is rotatably connected to the front-end filter tank (4). A drive motor is installed on the front-end filter tank (4). The drive screw (402) is connected to the output shaft of the drive motor through a transmission shaft. A sliding plate (403) is slidably connected to the front-end filter tank (4). The sliding plate (403) is threadedly connected to the drive screw (402). A lifting grid plate (407) is slidably connected inside the sliding plate (403).

7. The antibiotic treatment equipment for aquaculture wastewater based on a metal catalyst as described in claim 6, characterized in that: It also includes a side guide groove (4001), which is located at both ends of the front-end filter tank (4). A sliding rod (404) is slidably connected in the sliding plate (403). The top of the sliding rod (404) passes through the sliding plate (403) and is fixedly connected to the lifting grid plate (407). A movable wedge block (405) is fixedly connected to the bottom of the sliding rod (404). A lifting inclined surface (4002) is provided in the side guide groove (4001). The lifting inclined surface (4002) cooperates with the movable wedge block (405). A slag discharge inclined surface (4003) is provided in the front-end filter tank (4). A waste shovel plate (408) is installed at the bottom of the lifting grid plate (407). A rotating shaft (409) is fixedly connected in the lifting grid plate (407). The waste shovel plate (408) is rotatably connected to the rotating shaft (409).

8. The antibiotic treatment equipment for aquaculture wastewater based on a metal catalyst as described in claim 6, characterized in that: It also includes a triangular scraper (4031) and a cleaning scraper (4032), the triangular scraper (4031) and the cleaning scraper (4032) being fixed to the sliding plate (403), and the triangular scraper (4031) being in contact with the outer surface of the lifting grid plate (407).

9. The antibiotic treatment equipment for aquaculture wastewater based on a metal catalyst as described in claim 7, characterized in that: It also includes a waste residue recycling bin (1001), which is installed inside the sewage treatment tank (1). A downward pressure spring (406) is provided between the movable wedge block (405) and the sliding plate (403), and a downward pressure torsion spring (410) is provided between the waste shovel plate (408) and the lifting grid plate (407).

Images