Method and system for harmless treatment of waste from poultry slaughtering and dehairing process

Abstract

The present invention discloses a harmless treatment method for wastes in the poultry slaughtering and dehairing process: the wastes generated during the wax stripping and feather clamping operations are treated by a separate system. The wastewater from other workshops is treated according to the original treatment process. The system of the present invention includes a collection tank, a sewage pump, a drum screen machine, a water collection tank, a sewage pump, an air flotation machine, a sludge concentration tank, a sewage pump and a filter press connected in sequence by pipes. The present invention also provides a special drum screen machine and an air flotation machine. The present invention can effectively remove suspended matter such as broken wax blocks and duck feathers, and can be discharged without the need for special treatment of its wastewater through anaerobic tanks, aerobic tanks and other equipment and processes, thereby greatly reducing the pressure on the sewage treatment station and reducing treatment costs.

Description

Technical Field

[0001] The present invention relates to the field of solid waste treatment, in particular to a method for harmlessly treating waste from a poultry slaughtering and dehairing process, and also to a system for implementing the method. Background Art

[0002] The production of ready-to-eat poultry, such as ducks, begins with slaughtering. Defeathering is a key step in the poultry slaughtering process. This process is completed in the wax stripping and feathering rooms. This process produces suspended solids and wastewater containing broken wax and duck feathers, which require harmless treatment.

[0003] In existing technology, the wastewater and suspended solids, including broken wax and duck feathers, generated during the dehairing process in the wax stripping and feathering workshops are mixed with waste from other processing workshops and treated together. This treatment method utilizes a SBR process, whereby the workshop wastewater passes through three screens to remove suspended solids. The water then enters a regulating tank, then flows sequentially into an anaerobic tank and an aerobic tank for treatment, before finally flowing into an inclined tube sedimentation tank for discharge. The waste residue is then concentrated and filtered.

[0004] Long-term production practice has revealed that waste from the wax stripping and hair clipping workshops exhibits unique characteristics: wastewater accounts for approximately one-third of the slaughterhouse's total water consumption and contains high levels of suspended solids. However, indicators such as COD and ammonia nitrogen meet emission standards. Existing technology treats waste from these workshops together with waste from other processing workshops, increasing production costs and placing strain on wastewater treatment plants. Separating waste from these workshops and treating them individually based on their characteristics can overcome the drawbacks of existing technology, reduce the strain on light wastewater treatment plants, and lower production costs.

[0005] To this end, the applicant's technical staff conducted long-term technical research and repeated experiments, and finally developed a method and system for harmless treatment of waste from the poultry slaughtering and depilation process, and applied for a patent for this invention.

[0006] During the research and development process, targeted improvements were also made to the screen machine and flotation machine in the system. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a method and system for harmless treatment of waste from the poultry slaughtering and dehairing process, so as to treat waste such as broken wax blocks and duck feathers generated in the dehairing process of the wax stripping workshop and the feather clamping workshop.

[0008] In order to solve the above technical problems, the harmless treatment method of poultry slaughtering and depilation process waste of the present invention comprises the following steps:

[0009] a. The waste from the dehairing process first enters the collection tank, and is then pumped into the drum screen machine by the sewage pump to remove large suspended particles in the water, and then flows into the next collection tank;

[0010] b. The waste in the collection tank is then pumped to the flotation machine by a sewage pump. Polyaluminum chloride and anionic polyacrylamide, sewage treatment agents, are added to perform flocculation reactions to remove some SS, COD, and BOD in the water, further improving the quality of the effluent before discharge.

[0011] c. The waste residue generated in the flotation machine is concentrated in the sludge concentration tank and then pumped to the Dieluo filter press for dehydration treatment. The sludge can then be transported out according to regulations.

[0012] The harmless treatment system for poultry slaughtering and hair removal process includes a collection tank, a drum screen machine, a water collection tank, an air floatation machine, a sludge concentration tank and a filter press connected in sequence through pipelines; waste generated during the wax stripping and hair clipping operations is treated by the system.

[0013] The drum screen machine includes a water inlet pipe, which is fixedly connected to the collection tank, and a flow valve is provided on the water inlet pipe. One side of the collection tank is fixedly connected to the water collection tank, and one side of the water collection tank is provided with a treatment box. One side of the water collection tank is fixedly connected to a first water pipe, and one side of the treatment box is fixedly connected to a second water pipe. One side of the treatment box is fixedly connected to a wastewater pump, and the other end of the first water pipe is fixedly connected to the water inlet of the wastewater pump, and the other end of the second water pipe is fixedly connected to the water outlet of the wastewater pump; a primary filtering mechanism, which is arranged inside the collection tank and is used for primary filtering of large particles in the wastewater; a secondary filtering mechanism, which is arranged inside the treatment box and is used for secondary filtering of fine particle residues remaining in the wastewater.

[0014] The primary filtering mechanism includes a guide tube, a grille barrel, a storage tank, a conveying shaft, a scraper and a first motor. The outer wall of the guide tube is fixedly connected to one side of the collection pool, the grille barrel is fixedly connected to one end of the guide tube, one end of the grille barrel is fixedly connected to a sealing plate, the sealing plate is fixedly connected to the inside of the collection pool, one side of the storage tank is fixedly connected to an inner wall of one side of the grille barrel, a through hole is provided on one side of the storage tank, the conveying shaft is arranged inside the guide tube, one end of the conveying shaft is fixedly connected to the output end of the first motor through a coupling, the other end of the conveying shaft is connected to one side of the scraper through the through hole, the outer wall of the conveying shaft is fixedly connected to an auger spiral blade, the first motor is fixedly connected to one end of the guide tube, a plurality of scraping teeth are fixedly connected to the bottom of the scraper, and the scraping teeth are engaged in the groove of the grille barrel; a discharge port is provided on the outer wall of the guide tube for discharging large particles transported by the auger spiral blade.

[0015] The secondary filtration mechanism includes an automatic feeding mechanism, a stirring mechanism, an air dissolving pump, a scraping mechanism, a slag discharge pipe and a drain pipe. The automatic feeding mechanism is fixedly connected to the top of the processing box, the stirring mechanism is fixedly connected to the inside of the processing box, the air dissolving pump is fixedly connected to one side of the processing box, the output end of the air dissolving pump is fixedly connected to the air supply pipe, the other end of the air supply pipe is fixedly connected to the inside of the processing box, the scraping mechanism is fixedly connected to the top of the processing box, the slag discharge pipe is fixedly connected to one side of the processing box, and the drain pipe is fixedly connected to one side of the processing box; the automatic feeding mechanism includes a storage box, a feeding pipe and a solenoid valve, the bottom of the storage box is fixedly connected to the top of the processing box, the storage box is divided into two cavities, the two feeding pipes are fixedly connected to the bottom of the two cavities, and the two solenoid valves are respectively arranged on the outer wall of the feeding pipe.

[0016] A wastewater detector is provided inside the treatment box, a control box is fixedly connected to one side of the treatment box, and a controller is provided inside the control box.

[0017] The flotation machine includes a sewage treatment tank, an air dissolving tank, a scraper assembly, and a dosing assembly; a scum collecting box is fixedly installed on one side of the sewage treatment tank, and the scum collecting box is used to collect scum; a water pipe is fixedly installed on one side of the sewage treatment tank, and the water pipe is used to input sewage; a sewage pipe is fixedly installed on one side of the sewage treatment tank, and a sewage drain valve is provided on the sewage pipe, and the sewage pipe is used to discharge treated sewage; the air dissolving tank is fixedly installed on one side of the sewage treatment tank through two fixing frames, and the air dissolving tank is fixedly installed on one side of the sewage treatment tank through two fixing frames, and the air dissolving tank is fixedly installed on one side of the sewage treatment tank through two fixing frames. A water supply pipe and an air intake pipe are fixedly connected to the outer wall of the gas tank, and the water supply pipe and the air intake pipe are respectively connected to the external water supply equipment and the external air supply equipment, so as to realize the production of dissolved air water in the dissolved air tank. A water injection pipe is fixedly installed at one end of the dissolved air tank, and the other end of the water injection pipe is fixedly passed through one side of the sewage treatment tank and is connected to the interior of the sewage treatment tank, so as to input dissolved air water into the sewage treatment tank; the scraper assembly is used to push the scum generated in the sewage treatment tank into the scum collection box; the dosing assembly is used to perform intermittent dosing of the sewage in the sewage treatment tank.

[0018] The scraper assembly includes two side plates fixedly mounted on the top of the sewage treatment tank, two rotating rollers are rotatably connected between the two side plates, the outer walls of the two rotating rollers are transmission-connected to the same conveyor belt, a scraper plate is fixedly mounted on the outer wall of the conveyor belt, and the scraper plate is used to push the scum on the sewage water surface in the sewage treatment tank into the scum collection box, one side of one of the side plates is fixedly mounted with a motor, one end of the output shaft of the motor rotates through the adjacent side plate and is fixedly connected to one end of one of the rotating rollers, so as to drive the conveyor belt to move, thereby driving the scraper plate to complete the scraping of the scum.

[0019] The dosing component includes a dosing tube fixedly embedded in one side of the sewage treatment tank, a dosing hole is provided on one side of the dosing tube, and the dosing hole is connected to the interior of the sewage treatment tank, a drug storage cartridge is fixedly installed on the top of the dosing tube, and the drug storage cartridge is used to store drugs for sewage treatment, a through hole is provided at the bottom of the drug storage cartridge and is connected to the interior of the dosing tube, and a dosing port is provided on the top of the drug storage cartridge for replenishing drugs; the dosing component also includes a baffle that slides through the drug storage cartridge in a sealed manner, a communicating hole is provided inside the baffle, and the communicating hole cooperates with the through hole at the bottom of the drug storage cartridge to complete the passage of drugs, a fixing rod is fixedly installed on one side of the baffle, and a fixing plate is fixedly installed on one side of the side plate close to the drug storage cartridge, and one side of the fixing rod The end slides through the fixed plate, and the outer wall of the fixed rod is provided with a spring, one end of the spring is fixedly connected to one side of the fixed plate, and the other end of the spring is fixedly connected to one side of the baffle. The spring is used to drive the baffle to move so that the communicating hole is continuously located outside the medicine storage cartridge, and one end of one of the rotating roller shafts is fixedly connected to a connecting shaft, and one end of the connecting shaft rotates through the side plate and is fixedly installed with a cam, and the cam abuts against one side of the baffle to drive the baffle to move at intervals; two shielding plates are fixedly installed on one side of the medicine storage cartridge, and the two shielding plates are respectively located above and below the baffle, and the two shielding plates are both sealed and slidably matched with the baffle, and the two shielding plates are used to block the communicating hole to prevent the medicine inside the medicine storage cartridge from leaking from the gap when the communicating hole enters and exits the medicine storage cartridge.

[0020] A first sewage pipe is fixedly installed at the bottom of the sewage treatment tank, and a second sewage pipe is fixedly installed at the bottom of the scum collection tank. Valves are provided on the first sewage pipe and the second sewage pipe. The first sewage pipe and the second sewage pipe are respectively used for impurity precipitation and scum discharge. A guide plate is fixedly installed on the bottom inner wall of the sewage treatment tank, and the lower end of the guide plate cooperates with the first sewage pipe to ensure that the first sewage pipe fully discharges the impurity precipitation; a filter is fixedly installed on one end of the sewage pipe close to the sewage treatment tank to prevent impurities in the sewage treatment tank from being discharged together with the treated sewage, and a backflush pipe is fixedly connected to the outer wall of the water injection pipe, and the other end of the backflush pipe is fixedly connected to the sewage pipe for completing backflush cleaning of the filter when dissolved air water is injected.

[0021] The concept and workflow of the present invention are as follows: waste generated during operations in the wax stripping and feathering workshops is harmlessly treated using a separate system of the present invention; wastewater from other workshops is treated according to the existing treatment process. Using the system of the present invention, wastewater from the wax stripping and feathering workshops first enters a collection tank, where it is pumped by a sewage pump to a drum screen machine to remove large suspended solids (such as wax fragments and duck feathers). The wastewater then flows into the next collection tank, where it is pumped by a sewage pump to an air flotation machine. Polyaluminum chloride and anionic polyacrylamide are added to the wastewater treatment agents for flocculation, removing some SS, COD, and BOD from the water, further improving the quality of the effluent before it is discharged. The waste residue generated by the air flotation machine is concentrated in a sludge thickening tank and then pumped to a Dieluo filter press for dehydration. The sludge can then be transported as required, significantly reducing the pressure on the sewage treatment plant and lowering treatment costs.

[0022] The system of the present invention connects a collection tank, a drum screen machine, a water collection tank, an air flotation machine, a sludge thickening tank and a filter press in sequence through pipelines, thereby harmlessly treating waste generated during the wax stripping and feather clamping operations, effectively removing suspended matter such as broken wax blocks and duck feathers, and allowing wastewater to be discharged without requiring special treatment through anaerobic tanks, aerobic tanks and other equipment and processes, thereby greatly alleviating the pressure on sewage treatment plants and reducing treatment costs.

[0023] In order to achieve the purpose of the invention, as a preferred embodiment, the present invention also provides a special drum screen machine and an air flotation machine, which can further improve the system.

[0024] The drum screen machine provided by the present invention addresses the drawback of existing screen machines that leave fine particulate matter residue during wastewater treatment. It incorporates primary and secondary filtration mechanisms, along with a wastewater detector for real-time monitoring of wastewater filtration. This effectively and harmlessly treats suspended matter such as wax fragments and duck feathers. The drum screen machine of the present invention integrates both screen treatment and flotation treatment, replacing both existing screen machines and flotation machines.

[0025] As a preferred embodiment, the flotation machine provided by the present invention addresses the defects of existing flotation machines that cannot promptly and effectively remove scum from the water surface, which not only affects the subsequent treatment effect but also easily causes equipment blockage. By setting up an intelligent scraper component, efficient scum collection is achieved, reducing manual intervention; an intermittent dosing system is adopted, which is flexibly adjusted according to water quality to ensure stable and economical treatment effects; the sewage discharge structure and guide plate design are optimized to improve the impurity discharge efficiency; at the same time, the backflush cleaning function integrated in the water injection pipe automatically maintains the filter screen unobstructed, ensuring long-term and efficient operation of the equipment, and effectively improving the waste treatment efficiency, effect and operation and maintenance convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1Schematic diagram of the system structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the main structure of the drum grill machine of the present invention;

[0028] Figure 3 It is a side cross-sectional structural diagram of the drum grill machine of the present invention;

[0029] Figure 4 It is a schematic structural diagram of the processing box portion of the drum grill machine of the present invention;

[0030] Figure 5 It is a schematic diagram of the scraper portion of the drum grill machine of the present invention;

[0031] Figure 6 It is a schematic diagram of the discharge port portion of the drum grill machine of the present invention;

[0032] Figure 7 This is a schematic diagram of the working process of the drum grill machine of the present invention;

[0033] Figure 8 Schematic diagram of the control system of the drum grill machine of the present invention;

[0034] Figure 9 3D schematic diagram of the air flotation machine of the present invention;

[0035] Figure 10 This is a schematic diagram of the three-dimensional structure of the air flotation machine of the present invention from another perspective;

[0036] Figure 11 It is a schematic cross-sectional structural diagram of the air flotation machine of the present invention;

[0037] Figure 12 It is a schematic structural diagram of the dosing component of the air flotation machine of the present invention;

[0038] Figure 13 This is a schematic diagram of the disassembled structure of the dosing component of the air flotation machine of the present invention;

[0039] Figure 14 This is a flow chart for monitoring the quality of wastewater after treatment by the flotation machine of the present invention. DETAILED DESCRIPTION

[0040] The present invention is described in detail below with reference to the accompanying drawings:

[0041] like Figure 1 As shown, the harmless treatment system for waste from the poultry slaughtering and depilation process of the present invention includes a collection tank, a sewage pump, a drum screen machine, a water collection tank, a sewage pump, an air floatation machine, a sludge concentration tank, a sewage pump and a filter press, which are connected in sequence through pipelines.

[0042] The method of the present invention is as follows: waste generated during the wax stripping and hair clipping operations is treated through this system. Wastewater from other workshops is treated according to the original treatment process. Wastewater from the wax stripping and hair clipping workshops first enters a collection tank, is then pumped by a sewage pump into a drum screen machine to remove large suspended particles (such as wax fragments and duck feathers), and then flows into the next collection tank. The sewage pump is then pumped to an air flotation machine, where sewage treatment agents such as polyaluminum chloride and anionic polyacrylamide are added to cause flocculation, remove some SS, COD, and BOD from the water, and further improve the quality of the effluent before discharge. The waste residue generated in the air flotation machine is concentrated in a sludge concentration tank and then pumped by a pump to a Dieluo filter press for dehydration. The sludge can then be transported out according to regulations.

[0043] As a preferred solution, the present invention also provides a special drum screen machine and an air flotation machine to further improve the system.

[0044] like Figure 2-Figure 8 As shown, the drum screen machine of the present invention includes a water inlet pipe 1, which is fixedly connected to the collection tank 3. A flow valve 2 is provided on the water inlet pipe 1, so that the flow valve 2 can control the water flow from the water inlet pipe 1 to the collection tank 3. One side of the collection tank 3 is fixedly connected to the water collection tank 10, so that the wastewater in the collection tank 3 can flow into the water collection tank 10 after filtering out large particles. A treatment box 12 is provided on one side of the water collection tank 10. One side of the water collection tank 10 is fixedly connected to a first water pipe, one side of the treatment box 12 is fixedly connected to a second water pipe, and one side of the treatment box 12 is fixedly connected to a wastewater pump 11. The other end of the first water pipe is fixedly connected to the water inlet of the wastewater pump 11, and the other end of the second water pipe is fixedly connected to the water outlet of the wastewater pump 11, so that the wastewater pump 11 can pump the wastewater in the water collection tank 10 into the treatment box 12 for secondary filtration.

[0045] The primary filtering mechanism is arranged inside the collection tank 3, and is used for primary filtering of large particles in the wastewater. The primary filtering mechanism includes a guide tube 4, a grille barrel 5, a storage tank 6, a transmission shaft 7, a scraper 8 and a first motor 9. The outer wall of the guide tube 4 is fixedly connected to one side of the collection tank 3, the grille barrel 5 is fixedly connected to one end of the guide tube 4, and one end of the grille barrel 5 is fixedly connected to a sealing plate, which is fixedly connected to the inside of the collection tank 3, so that the wastewater in the collection tank 3 can be blocked. The wastewater containing large particles passes through the grille barrel 5 to filter the large particles in the groove of the grille barrel 5, and the wastewater flows to the subsequent water collection tank 10. One side of the storage tank 6 is fixedly connected to the inner wall of one side of the grille barrel 5. A through hole is opened on one side of the storage tank 6. The transmission shaft 7 is arranged inside the guide tube 4, and one end of the transmission shaft 7 is connected through a coupling. It is fixedly connected to the output end of the first motor 9, and the other end of the transmission shaft 7 is connected to one side of the scraper 8 through the through hole. The outer wall of the transmission shaft 7 is fixedly connected with an auger spiral blade. The first motor 9 is fixedly connected to one end of the guide tube 4. The bottom of the scraper 8 is fixedly connected with a plurality of scraping teeth 801. The scraping teeth 801 engage in the groove of the grille barrel 5. A discharge port 401 is provided on the outer wall of the guide tube 4 for discharging large particles transported by the auger spiral blade, so that the hanging teeth of the scraper 8 are inserted into the groove of the grille barrel 5 to scrape the large particles to the top of the storage tank 6. The large particles above the storage tank 6 will fall into the interior of the storage tank 6 and be transported to the discharge port 401 for discharge by the rotation of the auger spiral blade.

[0046] The secondary filtering mechanism is arranged inside the treatment box 12 and is used for secondary filtering of the fine particulate residue remaining in the wastewater. The secondary filtering mechanism includes an automatic feeding mechanism 13, a stirring mechanism 14, a dissolved air pump 15, a scraping mechanism 16, a slag discharge pipe 17 and a drain pipe 18. The automatic feeding mechanism 13 is fixedly connected to the top of the treatment box 12 and is used to automatically feed various wastewater treatment agents into the wastewater to assist flocculation. The stirring mechanism 14 is fixedly connected to the inside of the treatment box 12. The stirring mechanism 14 includes a second motor, a transmission shaft and a stirring blade. The second motor is fixedly connected to the top of the treatment box 12. The transmission shaft is connected to the second motor through a coupling. The stirring blade is fixedly connected to the other end of the transmission shaft. The stirring blade is arranged inside the treatment box 12 and is used to stir the wastewater treatment agent so that it can better produce flocculation with the wastewater. The dissolved air pump 15 is fixedly connected to one side of the treatment box 12. The output end of the dissolved air pump 15 is fixedly connected to the air supply pipe. The other end of the air supply pipe is fixedly connected to the inside of the treatment box 12 so that the dissolved air pump 15 can produce flocculation. The generated gas helps the flocs rise to the water surface inside the processing box 12. The scraping mechanism 16 is fixedly connected to the top of the processing box 12. The scraping mechanism 16 includes a conveyor belt, a scraper, a roller, a synchronous belt, a synchronous wheel and a third motor. The two rollers are arranged inside the conveyor belt. The two ends of the rollers are rotatably connected to a fixed plate. The fixed plate is fixedly connected to the top of the processing box 12. The scraper is fixedly connected to the outer wall of the conveyor belt. The third motor is fixedly connected to the top of the processing box 12. The output end of the third motor is fixedly connected to the transmission wheel. One of the rollers is connected to the transmission wheel through a synchronous belt drive to achieve the effect of scraping flocs on the water surface. The slag discharge pipe 17 is fixedly connected to one side of the processing box 12. A slag storage chamber is provided inside the processing box 12. The flocs in the slag storage chamber can be discharged through the slag discharge pipe 17. The drain pipe 18 is fixedly connected to one side of the processing box 12 to realize that the water after secondary filtration is discharged from the drain pipe 18.

[0047] The automatic feeding mechanism 13 includes a storage box, a feeding pipe and a solenoid valve. The bottom of the storage box is fixedly connected to the top of the treatment box 12. The storage box is divided into two cavities, which can store different types of wastewater treatment agents. The two feeding pipes are fixedly connected to the bottom of the two cavities respectively. The two solenoid valves are respectively arranged on the outer walls of the feeding pipes to control the feeding amount and proportion of the wastewater treatment agent.

[0048] A wastewater detector is provided inside the treatment box 12, which can monitor the treatment status of the wastewater in real time. A control box 19 is fixedly connected to one side of the treatment box 12. A controller is provided inside the control box 19 for more convenient control of the equipment, thereby improving the convenience of the equipment.

[0049] The drum screen machine of the present invention integrates the functions of screen treatment and flotation treatment, and can replace the screen machine and flotation machine of the prior art. When in use, the wastewater containing suspended matter such as wax blocks and duck feathers first flows into the collection tank through the water inlet pipe. During this period, the flow of the water inlet pipe can be controlled by a flow valve. The wastewater enters the collection tank and flows into the screen barrel for filtration treatment. The screen of the screen barrel filters out large particles such as wax blocks and duck feathers. The scraper rotates the filtered wax blocks and duck feathers to the top of the storage tank. At this time, the wax blocks and duck feathers will fall into the storage tank. The spiral blades of the auger will then transport the wax blocks and duck feathers to the discharge port through the guide pipe. The discharged wax blocks and duck feathers can be collected and treated. The filtered wastewater flows from the collection tank into the water collection tank. The wastewater pump draws the wastewater in the water collection tank into the treatment box. The automatic feeding mechanism on the top of the treatment box adds wastewater treatment agents such as polyaluminum chloride and anionic polyacrylamide into the wastewater. The stirring mechanism includes a second motor, a transmission shaft and stirring blades. The wastewater in the treatment box is stirred by the second motor of the stirring mechanism. The fan blades stir the wastewater, so that various wastewater treatment agents are evenly stirred, and the flocculation reaction in the wastewater is promoted. After the fine particulate residue in the wastewater is flocculated, the dissolved air pump is connected to the air pipe in the treatment box to discharge fine bubbles, and the flocs are lifted to the water surface. A slag storage chamber is provided in the treatment box. After the flocs are lifted to the water surface, the scraping mechanism starts to work. A scraper is fixedly connected to the outer wall of the conveyor belt of the scraping mechanism, which is used to scrape the raised flocs into the slag storage chamber. Two rollers are provided inside the conveyor belt. The output end of the third motor of the scraping mechanism is fixedly connected to a transmission wheel, one of which is connected to the outer wall of the transmission wheel through a synchronous belt drive. The floc residue scraped into the slag storage chamber is discharged through the slag discharge pipe, and the water after secondary filtration is discharged from the drain pipe. At the same time, the wastewater detector in the treatment box can monitor the filtration status of the wastewater in real time. During this period, all electrical operations can be completed in the control box.

[0050] like Figures 9-14 As shown, the air flotation machine of the present invention includes a sewage treatment tank 201, an air dissolving tank 203, a scraping assembly, and a dosing assembly.

[0051] A scum collection box 202 is fixedly mounted on one side of the sewage treatment tank. This box collects scum. A water pipe 206 is fixedly mounted on the other side of the sewage treatment tank 201. This pipe is used to input sewage. A sewage pipe 207 is fixedly mounted on one side of the sewage treatment tank 201. A sewage drain valve 208 is installed on this pipe. This pipe is used to discharge treated sewage.

[0052] The gas dissolving tank 203 is fixed to one side of the sewage treatment tank 201 via two mounting brackets. A water supply pipe 204 and an air inlet pipe 205 are fixedly connected to the outer wall of the gas dissolving tank 203. The water supply pipe 204 and the air inlet pipe 205 are connected to external water and air supply equipment, respectively, to produce dissolved gas water within the gas dissolving tank. A water injection pipe 209 is fixedly mounted at one end of the gas dissolving tank 203. The other end of the water injection pipe 209 is fixedly connected to the side of the sewage treatment tank 201 and is connected to the interior of the sewage treatment tank, used to supply dissolved gas water into the sewage treatment tank.

[0053] The scraper assembly is used to push the scum generated in the sewage treatment tank into the scum collection tank 202 .

[0054] The scraper assembly includes two side panels 213 fixedly mounted on the top of the sewage treatment tank 201. Two rotating rollers 215 are rotatably connected between the side panels. The outer walls of the two rotating rollers are drivingly connected to a common conveyor belt 216. A scraper plate 217 is fixedly mounted on the outer wall of the conveyor belt 216. The scraper plate 217 is used to push scum from the sewage surface in the sewage treatment tank 201 into the scum collection tank 202. A motor 214 is fixedly mounted on one side of one of the side panels. One end of the output shaft of the motor 214 rotates through the adjacent side panel and is fixedly connected to one end of one of the rotating rollers. This drives the conveyor belt 216, which in turn drives the scraper plate 217 to scrape away the scum.

[0055] The dosing component is used to perform interval dosing on the sewage in the sewage treatment tank.

[0056] The dosing assembly includes a dosing tube 219 fixedly embedded in a side of the sewage treatment tank 201. A dosing port 220 is defined on one side of the dosing tube 219. This port communicates with the interior of the sewage treatment tank 201. A drug storage cartridge 221 is fixedly mounted on the top of the dosing tube 219. This cartridge is used to store chemicals used in sewage treatment. A through-hole is defined at the bottom of the cartridge 221, communicating with the interior of the dosing tube 219. A dosing port is defined at the top of the cartridge 221 for replenishing the chemicals.

[0057] The dosing assembly also includes a baffle 225 that slides through the medicine storage cartridge 221 in a sealed manner. A connecting hole 226 is provided inside the baffle 225. The connecting hole 226 cooperates with the through hole at the bottom of the medicine storage cartridge 221 to allow the medicine to pass through. A fixing rod 227 is fixedly mounted on one side of the baffle 225, and a fixing plate 224 is fixedly mounted on the side of the side plate 213 near the medicine storage cartridge 221. One end of the fixing rod 227 slides through the fixing plate 224. A spring 228 is sleeved on the outer wall of the fixing rod 227. One end of the spring 228 is fixedly connected to one side of the fixing plate 224, and the other end of the spring 228 is fixedly connected to one side of the baffle 225. The spring is used to drive the baffle to move so that the connecting hole 226 is continuously located outside the medicine storage cartridge 221. In a natural state, the connecting hole and the through hole at the bottom are staggered to prevent the medicine in the medicine storage cartridge from leaking.

[0058] Two shielding plates are fixedly installed on one side of the drug storage cartridge 221. The two shielding plates are respectively located above and below the baffle 225. The two shielding plates are sealed and slidably fitted with the baffle 225. The two shielding plates are used to block the connecting hole 226 to prevent the medicine inside the drug storage cartridge 221 from leaking from the gap when the connecting hole 226 enters and exits the drug storage cartridge 221.

[0059] One end of one of the rotating rollers 215 is fixedly connected to a connecting shaft 222. One end of the connecting shaft 222 pivots through the side plate 213 and is fixedly mounted with a cam 223. The cam 223 abuts against one side of a baffle 225, driving the baffle 225 in intervals. This allows the connecting hole to align with the bottom through-hole, intermittently controlling the flow of drugs into the sewage treatment tank.

[0060] A first drain pipe 211 is fixedly mounted at the bottom of the sewage treatment tank 201. A second drain pipe 212 is fixedly mounted at the bottom of the scum collection tank 202. Both the first and second drain pipes are equipped with valves. They are used for sedimentation of impurities and discharge of scum, respectively. A deflector plate 218 is fixedly mounted on the inner wall of the bottom of the sewage treatment tank 201. The lower end of the deflector plate engages with the first drain pipe 211 to ensure that the first drain pipe 211 can fully discharge the precipitated impurities.

[0061] A filter is fixedly mounted on one end of the sewage pipe 207, near the sewage treatment tank 201, to prevent impurities within the sewage treatment tank 201 from being discharged along with the treated sewage. A backflush pipe 210 is fixedly connected to the outer wall of the water injection pipe 209. The other end of the backflush pipe is fixedly connected to the sewage pipe 207 and is used to backflush the filter during the injection of dissolved air water, keeping it unobstructed.

[0062] The working principle and use process of the air flotation machine of the present invention are as follows: before use, connect the water inlet pipe 204 and the air inlet pipe 205 to the external water supply equipment and the air supply equipment respectively to ensure that the connection is firm and there is no leakage; at the same time, check whether the valves of the sewage pipe 207 and the first sewage pipe 211 and the second sewage pipe 212 are in a closed state; then, add an appropriate amount of sewage treatment drugs into the drug storage cylinder 221 through the drug adding port to ensure that the drugs are sufficient; then open the external water supply equipment and the air supply equipment, so that water and gas enter the dissolved gas tank 203 through the water inlet pipe and the air inlet pipe to produce dissolved gas water; when the dissolved gas After the dissolved air water in the tank is produced, the dissolved air water is injected into the sewage treatment tank 201 through the water injection pipe 209; when the dissolved air system is operating normally, the user can inject the sewage to be treated into the sewage treatment tank 201 through the water pipe 206, and use the backflush pipe 210 to backflush and clean the filter at the end of the sewage pipe 207 to prevent blockage; at the same time, the user can turn on the motor 214 to drive the rotating roller 215 and the conveyor belt 216 to rotate, which can drive the scraper plate 217 to circulate in the sewage treatment tank; as the scraper assembly operates, the connecting shaft 222 drives the cam 223 to rotate , can intermittently push the baffle 225 to move, so that the medicine in the medicine storage cylinder 221 can enter the dosing tube 219 through the connecting hole 226 and be released into the sewage treatment tank through the dosing hole 220, so as to achieve intermittent dosing; the spring 228 can cooperate with the cam 223 to ensure that when dosing is not needed, the baffle 225 can block the medicine in the medicine storage cylinder 221; during sewage treatment, impurities in the sewage will react with the medicine and condense into flocs, among which smaller impurities will float to the top of the sewage with a large number of bubbles in the dissolved air to form scum. When the scraper 217 moves, it can The scum on the water surface is pushed to the scum collection box 202 for collection; larger impurities in the sewage will settle in the sewage treatment tank and accumulate near the first sewage pipe 211 under the guidance of the guide plate 218; after the sewage is treated, first turn off the external water supply and air supply equipment, stop the production and injection of dissolved air water, and then stop the operation of the scraper assembly. After that, the treated sewage can be discharged through the sewage pipe. After that, the valves of the first sewage pipe and the second sewage pipe can be opened to discharge the impurity precipitation at the bottom of the sewage treatment tank and the scum in the scum collection box respectively for the next step of treatment.

[0063] The flotation machine of the present invention, through the design of a scraper component, uses a motor to drive the conveyor belt and scraper movement, which can effectively push the scum in the sewage treatment box into the scum collection box, realizes automatic collection and cleaning of the scum, improves the scum collection efficiency, reduces manual intervention, and reduces maintenance costs; the dosing component adopts an interval dosing method, and realizes the timed and quantitative addition of medicines through the cooperation of a cam and a baffle. This design can flexibly adjust the dosage according to changes in water quality, ensure stable treatment effect, and avoid waste of medicines and environmental pollution; the bottom of the sewage treatment box and the scum collection box are both provided with a drain pipe and equipped with a valve control to facilitate the precipitation of impurities and the discharge of scum. In addition, the bottom of the sewage treatment box is also provided with a guide plate to guide the impurity precipitation to gather in the drain pipe, ensure thorough sewage discharge, and improve treatment efficiency; the outer wall of the water injection pipe is connected to the backflush pipe, which is connected to the drain pipe, so that the filter screen is automatically backflush cleaned when dissolved air water is injected, effectively preventing the filter screen from being blocked, ensuring the smooth discharge of treated water and the long-term stable operation of the equipment.

[0064] like Figure 14 As shown, the flotation machine of the present invention can also monitor the water quality of the treated sewage.

Claims

1. A harmless treatment system for waste from poultry slaughtering and dehairing, characterized by: It includes a collection tank, a drum screen machine, a water collection tank, an air flotation machine, a sludge thickening tank and a filter press connected in sequence through pipelines; the waste generated during the wax stripping and hair clipping operations is processed through this system; The drum screen machine comprises a water inlet pipe (1), the water inlet pipe (1) is fixedly connected to a collection tank (3), a flow valve (2) is provided on the water inlet pipe (1), one side of the collection tank (3) is fixedly connected to a water collection tank (10), one side of the water collection tank (10) is provided with a treatment box (12), one side of the water collection tank (10) is fixedly connected to a first water delivery pipe, one side of the treatment box (12) is fixedly connected to a second water delivery pipe, one side of the treatment box (12) is fixedly connected to a wastewater pump (11), the other end of the first water delivery pipe is fixedly connected to the water inlet of the wastewater pump (11), and the other end of the second water delivery pipe is fixedly connected to the water outlet of the wastewater pump (11); A primary filtering mechanism, which is arranged inside the collection tank (3) and is used to perform a primary filtration on large particles in the wastewater; a secondary filtering mechanism, which is arranged inside the treatment box (12) and is used to perform a secondary filtration on fine particles remaining in the wastewater; The primary filtering mechanism comprises a guide tube (4), a grille barrel (5), a storage tank (6), a transmission shaft (7), a scraper (8) and a first motor (9); the outer wall of the guide tube (4) is fixedly connected to one side of the collection tank (3); the grille barrel (5) is fixedly connected to one end of the guide tube (4); one end of the grille barrel (5) is fixedly connected to a sealing plate, which is fixedly connected to the inside of the collection tank (3); one side of the storage tank (6) is fixedly connected to the inner wall of one side of the grille barrel (5); a through hole is opened on one side of the storage tank (6); the transmission shaft (7) is arranged inside the guide tube (4); One end of the transmission shaft (7) is fixedly connected to the output end of the first motor (9) through a coupling, and the other end of the transmission shaft (7) is connected to one side of the scraper (8) through a through hole. The outer wall of the transmission shaft (7) is fixedly connected to an auger spiral blade. The first motor (9) is fixedly connected to one end of the guide tube (4). The bottom of the scraper (8) is fixedly connected to a plurality of scraping teeth (801), and the scraping teeth (801) are engaged in the groove of the grille barrel (5); a discharge port (401) is provided on the outer wall of the guide tube (4) for discharging large particles transported by the auger spiral blade; The secondary filtering mechanism comprises an automatic feeding mechanism (13), a stirring mechanism (14), an air dissolving pump (15), a scraping mechanism (16), a slag discharge pipe (17) and a drainage pipe (18), wherein the automatic feeding mechanism (13) is fixedly connected to the top of the treatment box (12), the stirring mechanism (14) is fixedly connected to the inside of the treatment box (12), the air dissolving pump (15) is fixedly connected to one side of the treatment box (12), the output end of the air dissolving pump (15) is fixedly connected to an air supply pipe, the other end of the air supply pipe is fixedly connected to the inside of the treatment box (12), the scraping mechanism (16) is fixedly connected to the top of the treatment box (12), the slag discharge pipe (17) is fixedly connected to one side of the treatment box (12), and the drainage pipe (18) is fixedly connected to one side of the treatment box (12).

2. The harmless treatment system for waste from the poultry slaughtering and dehairing process according to claim 1 is characterized by: The automatic feeding mechanism (13) comprises a storage box, a feeding pipe and a solenoid valve. The bottom of the storage box is fixedly connected to the top of the processing box (12). The storage box is divided into two cavities. The two feeding pipes are fixedly connected to the bottoms of the two cavities respectively. The two solenoid valves are respectively arranged on the outer walls of the two feeding pipes.

3. The harmless treatment system for waste from the poultry slaughtering and dehairing process according to claim 1 is characterized by: A wastewater detector is provided inside the treatment box (12), a control box (19) is fixedly connected to one side of the treatment box (12), and a controller is provided inside the control box (19).

4. The harmless treatment system for waste from poultry slaughtering and dehairing process according to claim 1 is characterized by: The flotation machine comprises a sewage treatment tank (201), an air dissolving tank (203), a scraping assembly, and a dosing assembly; a scum collecting tank (202) is fixedly mounted on one side of the sewage treatment tank, and the scum collecting tank (202) is used to collect scum; a water pipe (206) is fixedly mounted on one side of the sewage treatment tank (201), and the water pipe (206) is used to input sewage; a sewage pipe (207) is fixedly mounted on one side of the sewage treatment tank (201), and a sewage drain valve (208) is provided on the sewage pipe (207), and the sewage pipe (207) is used to discharge treated sewage; the air dissolving tank (203) is fixedly mounted on one side of the sewage treatment tank (201) via two fixing brackets; the air dissolving tank The outer wall of (203) is fixedly connected with a water supply pipe (204) and an air intake pipe (205), and the water supply pipe (204) and the air intake pipe (205) are respectively connected to an external water supply device and an external air supply device, and are used to realize the production of dissolved air water in the dissolved air tank (203). One end of the dissolved air tank (203) is fixedly installed with a water injection pipe (209), and the other end of the water injection pipe (209) is fixedly passed through one side of the sewage treatment tank (201) and is connected to the interior of the sewage treatment tank (201), and is used to input dissolved air water into the sewage treatment tank (201); the scraper assembly is used to push the scum generated in the sewage treatment tank (201) into the scum collection box (202); and the dosing assembly is used to perform intermittent dosing of the sewage in the sewage treatment tank (201).

5. The harmless treatment system for waste from poultry slaughtering and dehairing process according to claim 4 is characterized by: The scraper assembly comprises two side plates (213) fixedly mounted on the top of the sewage treatment tank (201); two rotating rollers (215) are rotatably connected between the two side plates (213); the outer walls of the two rotating rollers (215) are transmission-connected to the same conveyor belt (216); a scraper plate (217) is fixedly mounted on the outer wall of the conveyor belt (216); the scraper plate (217) is used to push scum on the surface of the sewage in the sewage treatment tank (201) into the scum collection tank (202); a motor (214) is fixedly mounted on one side of one of the side plates (213); one end of the output shaft of the motor (214) rotates through the adjacent side plate (213) and is fixedly connected to one end of one of the rotating rollers (215), and is used to drive the conveyor belt (216) to move, thereby driving the scraper plate (217) to complete the scraping of the scum.

6. The harmless treatment system for waste from poultry slaughtering and dehairing process according to claim 5, characterized in that: The dosing assembly comprises a dosing tube (219) fixedly embedded in one side of the sewage treatment tank (201), a dosing hole (220) is provided on one side of the dosing tube (219), and the dosing hole (220) is communicated with the interior of the sewage treatment tank (201), a drug storage cylinder (221) is fixedly installed on the top of the dosing tube (219), and the drug storage cylinder (221) is used for storing drugs for sewage treatment, and a through hole is provided at the bottom of the drug storage cylinder (221) and is communicated with the interior of the dosing tube (219). The top of the medicine storage barrel (221) is provided with a medicine adding port for replenishing medicine; the medicine adding assembly further comprises a baffle (225) which is sealed and slidably penetrates the medicine storage barrel (221); a communication hole (226) is provided inside the baffle (225); the communication hole (226) cooperates with the through hole at the bottom of the medicine storage barrel (221) for completing the passage of medicine; a fixing rod (227) is fixedly installed on one side of the baffle (225); a fixing plate (224) is fixedly installed on one side of the side plate (213) close to the medicine storage barrel (221); the fixing rod (227) is fixedly installed on the side plate (213) close to the medicine storage barrel (221); One end of the fixing rod (27) slides through the fixing plate (224), the outer wall of the fixing rod (227) is provided with a spring (228), one end of the spring (228) is fixedly connected to one side of the fixing plate (224), and the other end of the spring (228) is fixedly connected to one side of the baffle (225), and the spring (228) is used to drive the baffle (225) to move so that the connecting hole (226) is continuously located outside the drug storage cartridge (221); one end of one of the rotating roller shafts (215) is fixedly connected to a connecting shaft (222), and the connecting shaft ( One end of the medicine storage cartridge (221) is rotated to pass through the side plate (213) and is fixedly mounted with a cam (223), the cam (223) being in contact with one side of the baffle (225) and being used to drive the baffle (225) to move at intervals; one side of the medicine storage cartridge (221) is fixedly mounted with two shielding plates, the two shielding plates being located above and below the baffle (225) respectively, the two shielding plates being in sealing and sliding engagement with the baffle, and the two shielding plates being used to shield the communicating hole (226) to prevent the medicine inside the medicine storage cartridge from leaking from the gap when the communicating hole enters and exits the medicine storage cartridge.

7. The harmless treatment system for waste from poultry slaughtering and dehairing process according to claim 4 is characterized by: A first sewage pipe (211) is fixedly mounted on the bottom of the sewage treatment tank (201), and a second sewage pipe (212) is fixedly mounted on the bottom of the scum collection tank (202). Both the first sewage pipe (211) and the second sewage pipe (212) are provided with valves. The first sewage pipe (211) and the second sewage pipe (212) are used for impurity precipitation and scum discharge, respectively. A guide plate (218) is fixedly mounted on the inner wall of the bottom of the sewage treatment tank (201). The lower end of the guide plate (218) is connected to the inner wall of the bottom of the sewage treatment tank (201). The first sewage pipe (211) cooperates with the first sewage pipe (211) to ensure that the first sewage pipe (211) can fully discharge the impurity precipitation; a filter is fixedly installed at one end of the sewage pipe (207) close to the sewage treatment tank (201) to prevent the impurities in the sewage treatment tank (201) from being discharged together with the treated sewage; the outer wall of the water injection pipe (209) is fixedly connected to a backflush pipe (210), and the other end of the backflush pipe (210) is fixedly connected to the sewage pipe (207) to complete the backflush cleaning of the filter when the dissolved air water is injected.

8. A method for harmlessly treating waste from poultry slaughtering and dehairing process using the system according to any one of claims 1 to 7, characterized in that The steps include: a. The waste from the dehairing process first enters the collection tank, and is then pumped into the drum screen machine by the sewage pump to remove large suspended particles in the water, and then flows into the next collection tank; b. The waste in the collection tank is then pumped to the flotation machine by a sewage pump. Polyaluminum chloride and anionic polyacrylamide, sewage treatment agents, are added to perform flocculation reactions to remove some SS, COD, and BOD in the water, further improving the quality of the effluent before discharge. c. The waste residue generated in the flotation machine is concentrated in the sludge concentration tank and then pumped to the Dieluo filter press for dehydration treatment. The sludge can then be transported out according to regulations.

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