Coffee fresh fruit processing wastewater treatment device and method

Abstract

The invention discloses a coffee fresh fruit processing wastewater treatment device and method.The coffee fresh fruit processing wastewater treatment device comprises an anaerobic tower body, a water inlet pipe installed at the lower end of the anaerobic tower body, a water outlet pipe installed at the upper end of the anaerobic tower body and a gas collection box, the upper end of the anaerobic tower body is connected with a circulating cooling mechanism, and the output end of the circulating cooling mechanism is connected with a flow dividing assembly; the other end of the flow dividing assembly penetrates into the gas collecting box and is connected with a plurality of condensation plates, liquid flowing cavities are formed in the condensation plates, the other ends of the condensation plates are connected with a normalizing assembly, and the other end of the normalizing assembly penetrates out of the gas collecting box and is connected with a sealing assembly. According to the invention, a plurality of groups of condensation plates and a low-temperature cooling circulation system are arranged in the gas collection box, so that water vapor in biogas can be quickly condensed into liquid water, the humidity of the biogas is reduced, the generation of acidic condensate in a pipeline is reduced, the metal corrosion risk is remarkably reduced, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and in particular to a device and method for treating wastewater from fresh coffee fruit processing. Background Art

[0002] In the coffee bean production process, the first step is to pick the whole red berries, and then use clean water to flotate and wash them twice. The floating berries are fished out and not used. Then, the high-quality berries after washing and flotation are peeled by a peeling machine. The peeled pectin is squeezed through an extruder and then properly enzymatically hydrolyzed with enzymes (cellulase and pectinase). The peeled coffee beans are placed in a sealed fermentation barrel, and a compound yeast strain, nutritional additives and an appropriate amount of peel pectin juice are added. Anaerobic fermentation is carried out for 72-120 hours. (This fermentation time is based on the daily temperature of the fermentation site. If the temperature changes too much, it needs to be adjusted, and the yeast needs to be activated and cultured). The fermentation barrel is filled to about 80%, and in the early stage of fermentation (1-2d ), open the barrel and shake it once a day, let in an appropriate amount of oxygen, ensure the sealing condition of the fermentation barrel in the middle and late stages of fermentation, and try to reduce the participation of oxygen; after the fermentation is completed, take it out and dry it; the drying cycle is between 10-14 days, and the first day of drying needs to start from the morning to noon, so that the moisture can be reduced relatively quickly on the first day, and more microorganisms can be inactivated (starting from the second day at noon, if the temperature is too high, shade or pile it up appropriately, do not expose it to the sun at noon during the drying period, and control the drying speed appropriately). In the above steps, a large amount of water will be used. The wastewater generated contains organic matter, sugar and other nutrients, which need to be purified through wastewater treatment equipment to avoid environmental pollution.

[0003] In the process of treating fresh coffee fruit processing wastewater, it is often necessary to go through multiple stages, such as pretreatment (removing large particles of impurities, the most common is screen filtration), anaerobic digestion (degrading high-concentration organic matter, reducing COD load, and recovering biogas at the same time), aerobic treatment (further degrading remaining organic matter, removing ammonia nitrogen and total phosphorus), deep treatment (removing residual pollutants such as color, trace organic matter, and suspended solids) and disinfection discharge (killing pathogenic microorganisms to ensure the safety of the effluent).

[0004] Anaerobic digestion generally uses an anaerobic reactor (also known as an anaerobic tank or anaerobic tower). Patent publication number CN222389673U discloses an anaerobic reactor comprising a reactor body, a mud-water separation mechanism, a water inlet mechanism, a water distribution mechanism, and a mud discharge mechanism. The mud-water separation mechanism comprises a mud-water separator, a water collection hopper, and a return pipe. The water collection hopper is located at the upper end of the reactor body below the liquid level. The mud-water separator is connected to the water collection hopper. The first end of the return pipe is connected to the bottom of the mud-water separator. The water inlet mechanism is connected to the second end of the return pipe. The water distribution mechanism is connected to the water inlet mechanism. The mud discharge mechanism comprises a mud collection hopper, a mud collection pipe, a mud discharge main pipe, and a mud discharge branch pipe. The first end of the mud collection pipe is connected to the water inlet mechanism. Multiple mud discharge branches are connected to the mud collection pipe. The second end of the mud collection pipe is connected to the mud discharge main pipe to discharge the sludge from the reactor. The anaerobic reactor provided by this device has the advantages of high processing capacity, good mud-water separation effect, and low maintenance cost.

[0005] However, the above-mentioned anaerobic reactor still has the following problems during actual use:

[0006] After coffee cherry processing wastewater undergoes three-phase separation (biogas, liquid, and solid sludge) in an anaerobic reactor, the biogas is transported to downstream processes via a collection pipe at the top of the reactor. During the gas separation process, in addition to the main components methane and carbon dioxide, a certain amount of water vapor is often entrained in the biogas. This water not only dilutes the methane concentration and reduces energy recovery efficiency, but can also condense into acidic condensate on the inner wall of the pipe, causing metal corrosion. However, current anaerobic reactors do not have the function of pre-separating water vapor, which is relatively inconvenient. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a device for treating wastewater from fresh coffee fruit processing.

[0008] In order to solve the above technical problems, the technical solution of the present invention is: a coffee fresh fruit processing wastewater treatment device, comprising an anaerobic tower main body, an inlet pipe installed at the lower end of the anaerobic tower main body, a water outlet pipe installed at the upper end of the anaerobic tower main body and a gas collecting box, the upper end of the anaerobic tower main body is connected to a circulating cooling mechanism, the output end of the circulating cooling mechanism is connected to a diversion component, the other end of the diversion component passes through the interior of the gas collecting box and is connected to a plurality of condensing plates, the interiors of the plurality of condensing plates are each provided with a liquid flow cavity, the other ends of the plurality of condensing plates are each connected to a normalizing component, the other end of the normalizing component passes through the outside of the gas collecting box and is connected to a sealing component, a transmission component is provided inside the sealing component, the lower end of the transmission component passes through the interior of the gas collecting box and is connected to a plurality of scraping components, the plurality of scraping components are respectively abutted against the plurality of condensing plates, the upper end of the transmission component passes through the outside of the sealing component and is connected to a gear set, the other end of the gear set is connected to an exhaust component, the input end of the exhaust component is connected to the gas collecting box, and the lower end of the sealing component is connected to the input end of the circulating cooling mechanism.

[0009] Furthermore, the circulating cooling mechanism includes an L-shaped bracket, a liquid supply pump, a No. 1 pipe, a refrigerator, a No. 2 pipe, a No. 1 butt joint and a No. 2 butt joint. One end of the L-shaped bracket is fixedly connected to the upper end of the anaerobic tower body, the other end of the L-shaped bracket is fixedly connected to the outer wall of the liquid supply pump, the output end of the liquid supply pump is fixedly connected to one end of the No. 1 pipe, the other end of the No. 1 pipe is connected to the diversion assembly, the input end of the liquid supply pump is fixedly connected to one end of the No. 1 butt joint, the other end of the No. 1 butt joint is fixedly connected to the output end of the refrigerator, the input end of the refrigerator is fixedly connected to one end of the No. 2 butt joint, the other end of the No. 2 butt joint is connected to the sealing assembly, the outer wall of the refrigerator is fixedly connected to the upper surface of the anaerobic tower body, and the sealing assembly, No. 2 butt joint, refrigerator, No. 1 butt joint, liquid supply pump, No. 1 pipe and diversion assembly are internally connected.

[0010] Furthermore, the diversion component includes a No. 2 multi-way pipe, several No. 6 pipes and several No. 2 rigid pipes. One end of the No. 2 multi-way pipe is fixedly connected to the end of the No. 1 pipe away from the liquid supply pump, and the other ends of the No. 2 multi-way pipe are respectively fixedly connected to one end of several No. 6 pipes, and the other ends of the several No. 6 pipes are respectively fixedly connected to one end of several No. 2 rigid pipes. The other ends of the several No. 2 rigid pipes all pass through the interior of the gas collecting box and are respectively fixedly connected to the input ends of several condensation plates. The No. 1 pipe, the No. 2 multi-way pipe, the No. 6 pipe, the No. 2 rigid pipe and the interior of the liquid flow cavity are connected.

[0011] Furthermore, the normalization component includes a No. 3 tube, a No. 1 multi-way tube, several No. 5 tubes and several No. 1 rigid tubes. One ends of the several No. 1 rigid tubes are fixedly connected to the output ends of the several condensation plates, respectively. The other ends of the several No. 1 rigid tubes all pass through the outside of the gas collecting box and are fixedly connected to one ends of the several No. 5 tubes, respectively. The other ends of the several No. 5 tubes are fixedly connected to several connectors of the No. 1 multi-way tube, respectively. The last end of the No. 1 multi-way tube is fixedly connected to one end of the No. 3 tube, and the other end of the No. 3 tube is connected to the sealing component. The liquid flow cavity, the No. 1 rigid tube, the No. 5 tube, the No. 1 multi-way tube and the No. 3 tube are internally communicated.

[0012] Furthermore, the sealing assembly includes a power tube, a liquid inlet tube, a liquid outlet tube and a partition plate. The bottom surface of the power tube is fixedly connected to the upper surface of the air collecting box. The upper end of the power tube is fixedly connected to one end of the liquid inlet tube, and the other end of the liquid inlet tube is fixedly connected to the end of the No. 3 tube away from the No. 1 multi-way tube. The lower end of the power tube is fixedly connected to one end of the liquid outlet tube, and the other end of the liquid outlet tube is fixedly connected to the end of the No. 2 tube away from the No. 2 docking tube. The partition plate is fixedly connected to the upper end inside the power tube. The partition plate separates the liquid inlet tube and the liquid outlet tube. A leakage port is opened through the upper surface of the partition plate, and the leakage port is located on the side of the liquid inlet tube. The transmission assembly is located on the side of the partition plate close to the liquid inlet tube. The No. 3 tube, the liquid inlet tube, the power tube, the leakage port, the liquid outlet tube and the No. 2 tube are internally connected.

[0013] Furthermore, the transmission assembly includes an impeller No. 1 and a transmission rod. The impeller No. 1 is sleeved and fixedly connected to the outside of the transmission rod. The impeller No. 1 is located above the partition plate. The upper end of the transmission rod passes through the top of the power tube and is connected to the gear set. The lower end of the transmission rod passes through the partition plate and the power tube to the interior of the air collecting box and is connected to a number of scraping assemblies.

[0014] Furthermore, the scraping assembly includes a connecting ring and a scraper. The connecting ring is sleeved and fixedly connected to the outer wall of the transmission rod. The side wall of the connecting ring is fixedly connected to one end of the scraper. The upper surface of the scraper is against the bottom surface of the condensation plate.

[0015] Furthermore, the gear set includes a protective cover, a large gear, a passive rod and a small gear. The large gear is sleeved and fixedly connected to the outer wall of the transmission rod at one end outside the power tube. The lower end of the passive rod is connected to the air extraction component. The small gear is sleeved and fixedly connected to the outer wall of the upper end of the passive rod. The large gear and the small gear are meshed. The protective cover is sleeved on the outside of the large gear, the passive rod and the small gear. The number of combinations of large gears, passive rods and small gears is not less than two groups.

[0016] Furthermore, the exhaust assembly includes a No. 4 tube, an exhaust shell, an exhaust pipe, a support plate, an exhaust pipe and a No. 2 impeller. One end of the No. 4 tube and the support plate are fixedly connected to the upper end of the air collecting box, and the other ends of the No. 4 tube and the support plate are fixedly connected to the outer wall of the exhaust shell. The No. 2 impeller is located inside the exhaust shell. The lower end of the passive rod passes through the interior of the exhaust shell and is fixedly connected to the upper surface of the No. 2 impeller. One end of the exhaust pipe is fixedly connected to the side wall of the exhaust shell, and the other end of the exhaust pipe is fixedly connected to one end of the exhaust pipe. The air collecting box, No. 4 tube, the exhaust shell, the exhaust pipe and the exhaust pipe are internally connected.

[0017] A method for treating wastewater from fresh coffee fruit processing, comprising the following steps:

[0018] Pretreatment: Use a screen to intercept large impurities such as peel fibers to reduce the risk of subsequent equipment clogging; add lime milk, sodium bicarbonate or return the digestion water for neutralization to adjust the pH value; then remove suspended matter and pectin through coagulation and sedimentation or flotation;

[0019] Anaerobic tower treatment:

[0020] Step 1: The pretreated wastewater is pumped to the bottom of the anaerobic tower body. The water distributor inside the anaerobic tower body evenly distributes the wastewater to ensure sufficient contact with the granular sludge. Anaerobic microorganisms then degrade organic matter to produce biogas.

[0021] Step 2: The biogas, treatment liquid and sludge are separated by a three-phase separator inside the anaerobic tower body. The biogas rises to the top gas collecting box, and part of the sludge flows back to the bottom of the anaerobic tower body to maintain the microbial concentration. The treatment liquid enters subsequent aerobic treatment or deep treatment.

[0022] Beneficial effects of the present invention:

[0023] This coffee fruit processing wastewater treatment device, by installing multiple sets of condensing plates and a low-temperature cooling circulation system in the gas collecting box, can quickly condense the water vapor in the biogas into liquid water, reduce the humidity of the biogas, and reduce the formation of acidic condensate in the pipeline, significantly reducing the risk of metal corrosion and extending the service life of the equipment.

[0024] In this coffee fruit processing wastewater treatment device, the scraping component is linked to the coolant flow through a transmission rod to scrape off condensed water droplets and dirt on the surface of the condenser plate in real time, preventing ice or scaling from affecting heat exchange efficiency and reducing the frequency of manual maintenance.

[0025] This coffee fruit processing wastewater treatment device uses a cooling liquid that is cooled by a refrigerator and then recycled. It uses a normalizing component and a diverter component to achieve uniform cooling of multiple condensing plates. It also uses the impact force of the coolant flow to drive the transmission component, eliminating the need for an additional power source and reducing energy consumption.

[0026] In this coffee fruit processing wastewater treatment device, the exhaust component amplifies the rotation speed through the gear set, forming a negative pressure in the gas collecting box, accelerating the flow and collection of biogas, and preventing gas accumulation from causing a decrease in three-phase separation efficiency.

[0027] This type of coffee fruit processing wastewater treatment device has a diversion component and a normalization component that can flexibly adjust the number of condensation plates according to the processing scale, adapting to the needs of different processing volumes and having strong scalability.

[0028] This type of coffee fruit processing wastewater treatment device ensures that the coolant and biogas paths are completely isolated through the design of sealing components and protective covers, avoiding cross contamination and preventing the external environment from interfering with the operation of transmission components. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall appearance of the present invention;

[0030] Figure 2 This is a schematic diagram of the overall appearance of the present invention from another perspective;

[0031] Figure 3 It is a detailed connection diagram of the gas collecting box, circulating cooling mechanism and two diversion assemblies of the present invention;

[0032] Figure 4 For the present invention Figure 3 A schematic cross-sectional view of some of the components in the middle;

[0033] Figure 5 It is a cross-sectional schematic diagram of components such as the gas collecting box, the circulating cooling mechanism and the two diversion assemblies of the present invention;

[0034] Figure 6 Detailed connection diagram of the transmission assembly and the condensing plate of the present invention;

[0035] Figure 7 Detailed connection diagram of the transmission assembly and the scraping assembly of the present invention;

[0036] Figure 8 is a schematic cross-sectional view of a condensation plate of the present invention;

[0037] Figure 9 Detailed connection diagram of the gear set and the air extraction assembly of the present invention.

[0038] In the figure, 1. Anaerobic tower body; 2. Water inlet pipe; 3. Water outlet pipe; 4. Gas collecting box; 5. L-shaped bracket; 6. Liquid supply pump; 7. No. 1 pipe; 8. Refrigerator; 9. No. 2 pipe; 10. No. 3 pipe; 11. Protective cover; 12. No. 4 pipe; 13. Pumping shell; 14. Exhaust pipe; 15. Power pipe; 16. No. 5 pipe; 17. No. 1 multi-way pipe; 18. No. 6 pipe; 19. No. 2 multi-way pipe; 20. No. 1 21. Support plate; 22. Liquid inlet pipe; 23. Liquid outlet pipe; 24. Impeller No. 1; 25. Transmission rod; 26. Large gear; 27. Passive rod; 28. Small gear; 29. ​​Exhaust pipe; 30. Condensation plate; 31. Hard pipe No. 2; 32. Partition plate; 33. Liquid leakage port; 34. Connecting ring; 35. Scraper; 36. Liquid flow chamber; 37. Impeller No. 2; 38. Butt-joint pipe No. 2; 39. Hard pipe No. 1. DETAILED DESCRIPTION

[0039] The following is a further description of specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is intended to facilitate understanding of the present invention and does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0040] See also Figures 1-9 , a coffee fresh fruit processing wastewater treatment device includes an anaerobic tower body 1, an inlet pipe 2 installed at the lower end of the anaerobic tower body 1, an outlet pipe 3 installed at the upper end of the anaerobic tower body 1 and an air collecting box 4, the upper end of the anaerobic tower body 1 is connected to a circulating cooling mechanism, the output end of the circulating cooling mechanism is connected to a diversion component, the other end of the diversion component passes through the interior of the air collecting box 4 and is connected to a plurality of condensing plates 30, the interiors of the plurality of condensing plates 30 are each provided with a flow liquid cavity 36, the other ends of the plurality of condensing plates 30 are each connected to a normalizing component, the other end of the normalizing component passes through the outside of the air collecting box 4 and is connected to a sealing component, a transmission component is provided inside the sealing component, the lower end of the transmission component passes through the interior of the air collecting box 4 and is connected to a plurality of scraping components, the plurality of scraping components are respectively against the plurality of condensing plates 30, the upper end of the transmission component passes through the outside of the sealing component and is connected to a gear set, the other end of the gear set is connected to an exhaust component, the input end of the exhaust component is connected to the air collecting box 4, and the lower end of the sealing component is connected to the input end of the circulating cooling mechanism.

[0041] It should be noted here that the anaerobic tower body 1, water inlet pipe 2, water outlet pipe 3 and gas collecting box 4 are mature internal technologies of existing anaerobic towers, and the anaerobic tower body 1 also includes a water distribution system that evenly distributes the inlet water to the bottom of the reactor to ensure sufficient contact between the wastewater and the microorganisms; a sludge bed that serves as the main carrier of anaerobic microorganisms and accumulates high concentrations of granular sludge or flocculent sludge; a surface area for the attachment and growth of microorganisms, thereby increasing biomass and stabilizing the biological carrier area (filling layer); a three-phase separator that separates biogas, sludge and treated water to ensure stable operation of the reactor; timely removal of scum (such as pectin, grease, etc.) generated in the reactor; a scum rapid discharge device that prevents blockage or interference with mass transfer; a reflux system that enables internal circulation or external reflux to enhance mass transfer and shock load resistance; a control system that monitors and adjusts reactor operating parameters to ensure a stable and efficient control system; a sedimentation zone is set at the top of the reactor to further separate the sludge and effluent; and a gas-liquid separation zone that separates biogas from the mud-water mixture and drives internal circulation. Detailed description of their installation location, connection relationship and working principle is not provided here.

[0042] As a preferred embodiment of the present invention, the circulating cooling mechanism includes an L-shaped bracket 5, a liquid supply pump 6, a No. 1 pipe 7, a refrigerator 8, a No. 2 pipe 9, a No. 1 butt joint 20 and a No. 2 butt joint 38. One end of the L-shaped bracket 5 is fixedly connected to the upper end of the anaerobic tower body 1, and the other end of the L-shaped bracket 5 is fixedly connected to the outer wall of the liquid supply pump 6. The output end of the liquid supply pump 6 is fixedly connected to one end of the No. 1 pipe 7, and the other end of the No. 1 pipe 7 is connected to the diversion component. The input end of the liquid supply pump 6 is fixedly connected to one end of the No. 1 butt joint 20, and the other end of the No. 1 butt joint 20 is fixedly connected to the output end of the refrigerator 8. The input end of the refrigerator 8 is fixedly connected to one end of the No. 2 butt joint 38, and the other end of the No. 2 butt joint 38 is connected to the sealing component. The outer wall of the refrigerator 8 is fixedly connected to the upper surface of the anaerobic tower body 1, and the sealing component, No. 2 butt joint 38, refrigerator 8, No. 1 butt joint 20, liquid supply pump 6, No. 1 pipe 7 and diversion component are internally connected.

[0043] More specifically, by providing a circulating cooling mechanism, low-temperature coolant can be pumped into the liquid chamber 36 of the condensation plate 30 , so that when the biogas contacts the condensation plate 30 , the water vapor contained in the biogas can be liquefied, thereby achieving separation.

[0044] As a preferred solution of the present invention, the diversion component includes a No. 2 multi-way pipe 19, several No. 6 pipes 18 and several No. 2 hard pipes 31. One end of the No. 2 multi-way pipe 19 is fixedly connected to the end of the No. 1 pipe 7 away from the liquid supply pump 6, and the other ends of the No. 2 multi-way pipe 19 are respectively fixedly connected to one end of several No. 6 pipes 18, and the other ends of the several No. 6 pipes 18 are respectively fixedly connected to one end of several No. 2 hard pipes 31. The other ends of the several No. 2 hard pipes 31 all pass through the interior of the gas collecting box 4 and are respectively fixedly connected to the input ends of several condensing plates 30. The No. 1 pipe 7, the No. 2 multi-way pipe 19, the No. 6 pipe 18, the No. 2 hard pipe 31 and the interior of the liquid flow chamber 36 are connected.

[0045] More specifically, by setting up a diversion component, the coolant pumped in by the circulating cooling mechanism can be divided into multiple groups, so that an appropriate amount of coolant will flow into several condensation plates 30, and flow detection sensors and solenoid valves can also be set in the No. 2 multi-way pipe 19 or several No. 6 pipes 18 to monitor the flow in real time. If the flow of coolant entering several No. 6 pipes 18 is inappropriate, it can be adjusted in time.

[0046] As a preferred solution of the present invention, the normalization component includes a No. 3 tube 10, a No. 1 multi-way tube 17, several No. 5 tubes 16 and several No. 1 hard tubes 39, one end of the several No. 1 hard tubes 39 are respectively fixedly connected to the output ends of the several condensing plates 30, the other ends of the several No. 1 hard tubes 39 all pass through the outside of the gas collecting box 4 and are respectively fixedly connected to one ends of the several No. 5 tubes 16, the other ends of the several No. 5 tubes 16 are respectively fixedly connected to several connectors of the No. 1 multi-way tube 17, the last end of the No. 1 multi-way tube 17 is fixedly connected to one end of the No. 3 tube 10, the other end of the No. 3 tube 10 is connected to the sealing component, and the liquid flow cavity 36, No. 1 hard tube 39, No. 5 tube 16, No. 1 multi-way tube 17 and No. 3 tube 10 are internally connected.

[0047] More specifically, by providing a normalizing component, the coolant after heat exchange can be accurately directed into the sealing component to achieve a subsequent cooling cycle.

[0048] As a preferred embodiment of the present invention, the sealing assembly includes a power tube 15, a liquid inlet tube 22, a liquid outlet tube 23 and a partition plate 32. The bottom surface of the power tube 15 is fixedly connected to the upper surface of the gas collecting box 4. The upper end of the power tube 15 is fixedly connected to one end of the liquid inlet tube 22. The other end of the liquid inlet tube 22 is fixedly connected to the end of the No. 3 tube 10 away from the No. 1 multi-way tube 17. The lower end of the power tube 15 is fixedly connected to one end of the liquid outlet tube 23. The other end of the liquid outlet tube 23 is fixedly connected to the No. 2 tube 9. One end away from the No. 2 docking pipe 38 is fixedly connected, and the partition plate 32 is fixedly connected to the upper end inside the power pipe 15. The partition plate 32 separates the liquid inlet pipe 22 and the liquid outlet pipe 23. A leakage port 33 is opened through the upper surface of the partition plate 32. The leakage port 33 is located on the side of the liquid inlet pipe 22. The transmission assembly is located on the side of the partition plate 32 close to the liquid inlet pipe 22. The No. 3 pipe 10, the liquid inlet pipe 22, the power pipe 15, the leakage port 33, the liquid outlet pipe 23 and the No. 2 pipe 9 are internally connected.

[0049] More specifically, by setting up a sealing component, first, the coolant delivered by the normalization component can be collected together to facilitate subsequent cooling and recycling; secondly, several groups of coolant can be collected together to increase the impact force, thereby using the impact force to drive the transmission component to rotate.

[0050] As a preferred solution of the present invention, the transmission assembly includes an impeller No. 1 24 and a transmission rod 25. The impeller No. 1 24 is sleeved and fixedly connected to the outside of the transmission rod 25. The impeller No. 1 24 is located above the partition plate 32. The upper end of the transmission rod 25 passes through the top of the power tube 15 and is connected to the gear set. The lower end of the transmission rod 25 passes through the partition plate 32 and the power tube 15 to the interior of the air collecting box 4 and is connected to a number of scraping assemblies.

[0051] More specifically, by setting up a transmission component, the scraping component can be driven by the rotation of the transmission component to scrape the bottom surface of the condensation plate 30. At the same time, after the rotation speed is amplified by the gear set, the extraction of biogas inside the gas collecting box 4 is accelerated through the exhaust component.

[0052] As a preferred solution of the present invention, the scraping assembly includes a connecting ring 34 and a scraper 35. The connecting ring 34 is sleeved and fixedly connected to the outer wall of the transmission rod 25. The side wall of the connecting ring 34 is fixedly connected to one end of the scraper 35. The upper surface of the scraper 35 is against the bottom surface of the condensation plate 30.

[0053] More specifically, after the water vapor comes into contact with the condensation plate 30, the water vapor will liquefy into water droplets because the temperature of the condensation plate 30 is low. In order to prevent the water droplets from affecting the subsequent condensation of the water vapor, and also to prevent the water droplets from continuing to contact with the low temperature and causing freezing, a scraping component is provided at this time to scrape off the liquefied water droplets and reduce the impact on the condensation plate 30.

[0054] As a preferred embodiment of the present invention, the gear set includes a protective cover 11, a large gear 26, a passive rod 27 and a small gear 28. The large gear 26 is sleeved and fixedly connected to the outer wall of the transmission rod 25 at one end outside the power tube 15. The lower end of the passive rod 27 is connected to the vacuum assembly. The small gear 28 is sleeved and fixedly connected to the outer wall of the upper end of the passive rod 27. The large gear 26 and the small gear 28 are engaged. The protective cover 11 is sleeved on the outside of the large gear 26, the passive rod 27 and the small gear 28. The number of combinations of the large gear 26, the passive rod 27 and the small gear 28 is not less than two groups.

[0055] More specifically, since the rotation speed of the transmission component is mainly driven by the coolant delivered by the normalizing component, the rotation speed of the transmission component is usually not too fast. At this time, by setting a gear set, the rotation of the exhaust component can be accelerated, thereby generating a larger wind force.

[0056] As a preferred solution of the present invention, the exhaust assembly includes a No. 4 tube 12, an exhaust shell 13, an exhaust pipe 14, a support plate 21, an exhaust pipe 29 and a No. 2 impeller 37. One end of the No. 4 tube 12 and the support plate 21 are fixedly connected to the upper end of the air collecting box 4, and the other end of the No. 4 tube 12 and the support plate 21 are fixedly connected to the outer wall of the exhaust shell 13. The No. 2 impeller 37 is located inside the exhaust shell 13. The lower end of the passive rod 27 passes through the interior of the exhaust shell 13 and is fixedly connected to the upper surface of the No. 2 impeller 37. One end of the exhaust pipe 29 is fixedly connected to the side wall of the exhaust shell 13, and the other end of the exhaust pipe 29 is fixedly connected to one end of the exhaust pipe 14. The air collecting box 4, the No. 4 tube 12, the exhaust shell 13, the exhaust pipe 29 and the exhaust pipe 14 are internally connected.

[0057] More specifically, by providing the gas extraction component, the speed of extracting the biogas inside the gas collecting box 4 can be accelerated.

[0058] Working principle of the present invention:

[0059] Pretreatment: Use a screen to intercept large impurities such as peel fibers to reduce the risk of subsequent equipment clogging; add lime milk, sodium bicarbonate or return the digestion water for neutralization to adjust the pH value; then remove suspended matter and pectin through coagulation and sedimentation or flotation;

[0060] Anaerobic tower treatment:

[0061] Step 1: The pretreated wastewater is pumped to the bottom of the anaerobic tower body 1. The water distributor inside the anaerobic tower body 1 evenly distributes the wastewater to ensure sufficient contact with the granular sludge. Anaerobic microorganisms then degrade organic matter to produce biogas.

[0062] Step 2: The biogas, treatment liquid and sludge are separated by the three-phase separator inside the anaerobic tower body 1, wherein the biogas rises to the top gas collecting box 4, and part of the sludge flows back to the bottom of the anaerobic tower body 1 to maintain the microbial concentration, and the treatment liquid enters the subsequent aerobic treatment or deep treatment;

[0063] Step 3: As the biogas rises and enters the gas collecting box 4, a low-temperature coolant flows through the liquid chamber 36 of the condensing plate 30 (this low temperature is determined by actual conditions. For example, at normal pressure, the water vapor in the biogas may be between -10°C and -20°C, so the coolant only needs to ensure that the surface temperature of the condensing plate 30 is lower than this temperature). After the biogas contacts the bottom surface of the condensing plate 30, it quickly liquefies into water droplets (the upper surface of the condensing plate 30 is provided with a cold-insulating material to prevent the liquefied water droplets dripping from the upper condensing plate 30 from accumulating or freezing on the upper surface of the condensing plate 30).

[0064] After the coolant flows through the liquid flow chamber 36, it enters the No. 1 hard pipe 39, then enters the No. 5 pipe 16 from the No. 1 hard pipe 39, and then merges into the No. 1 multi-way pipe 17 from several No. 5 pipes 16, and finally enters the No. 3 pipe 10 into the liquid inlet pipe 22.

[0065] The coolant that enters the liquid inlet pipe 22 enters the power pipe 15. Because the coolant in several No. 5 pipes 16 merges together, it generates a large water pressure and impact force. At this time, this impact force will hit the surface of the No. 1 impeller 24 in the power pipe 15, and then push the No. 1 impeller 24 to rotate. After that, this part of the coolant will follow the No. 1 impeller 24 and rotate a distance. Then, it will fall from the leakage port 33 of the partition plate 32 to the bottom of the power pipe 15.

[0066] The coolant that falls to the bottom of the power tube 15 enters the No. 2 tube 9 through the liquid outlet pipe 23, and then enters the refrigerator 8 through the No. 2 connecting pipe 38. After the refrigerator 8 cools the coolant to a set low temperature again, it is extracted by the liquid supply pump 6 through the No. 1 connecting pipe 20 and pumped into the No. 1 tube 7. The coolant then enters the No. 2 multi-way pipe 19, and then enters the No. 2 hard tubes 31 through the No. 6 tubes 18, and finally returns to the liquid flow cavity 36 of the condensing plate 30 to complete the circulation (the refrigerator 8 is a mature existing technology, and its internal structure and working principle are conventional technologies, which will not be described in detail here).

[0067] When the first impeller 24 is impacted by the coolant, the impact force of the coolant pushes the first impeller 24 to rotate with the transmission rod 25. When the transmission rod 25 rotates, the end of the transmission rod 25 located inside the air collecting box 4 can rotate together with the connecting rings 34. Then, the connecting rings 34 rotate with the scrapers 35, thereby scraping the bottom surface of the condensation plate 30 to scrape off the condensed water droplets.

[0068] In addition, when the transmission rod 25 rotates, the upper end of the transmission rod 25 will also drive the large gear 26 to rotate inside the protective cover 11. After the large gear 26 rotates, it will engage with the small gear 28 to rotate the passive rod 27 (because the number of the large gear 26, the passive rod 27 and the small gear 28 is not less than two groups, such as Figure 4 and Figure 9 , and each group is a large gear 26 driving the small gear 28 to rotate, thereby increasing the speed of the passive rod 27), and then can drive the second impeller 37 to rotate rapidly inside the exhaust shell 13;

[0069] After the second impeller 37 rotates rapidly, negative pressure suction is formed inside the exhaust shell 13, thereby accelerating the extraction of biogas from the upper end of the gas collecting box 4 through the fourth pipe 12 to improve the collection efficiency of biogas.

[0070] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A coffee fruit processing wastewater treatment device, comprising an anaerobic tower body (1), a water inlet pipe (2) installed at the lower end of the anaerobic tower body (1), a water outlet pipe (3) installed at the upper end of the anaerobic tower body (1), and a gas collecting box (4), characterized in that: The upper end of the anaerobic tower body (1) is connected to a circulating cooling mechanism, the output end of the circulating cooling mechanism is connected to a diversion component, the other end of the diversion component passes through the interior of the gas collecting box (4) and is connected to a plurality of condensing plates (30), the interiors of the plurality of condensing plates (30) are each provided with a liquid flow cavity (36), the other ends of the plurality of condensing plates (30) are each connected to a normalization component, the other end of the normalization component passes through the exterior of the gas collecting box (4) and is connected to a sealing component, a transmission component is provided inside the sealing component, the lower end of the transmission component passes through the interior of the gas collecting box (4) and is connected to a plurality of scraping components, the plurality of scraping components are respectively abutted against the plurality of condensing plates (30), the upper end of the transmission component passes through the exterior of the sealing component and is connected to a gear set, the other end of the gear set is connected to an exhaust component, the input end of the exhaust component is connected to the gas collecting box (4), and the lower end of the sealing component is connected to the input end of the circulating cooling mechanism.

2. The device for treating fresh coffee fruit processing wastewater according to claim 1, characterized in that: The circulating cooling mechanism comprises an L-shaped bracket (5), a liquid supply pump (6), a No. 1 pipe (7), a refrigerator (8), a No. 2 pipe (9), a No. 1 butt joint pipe (20) and a No. 2 butt joint pipe (38), one end of the L-shaped bracket (5) is fixedly connected to the upper end of the anaerobic tower body (1), the other end of the L-shaped bracket (5) is fixedly connected to the outer wall of the liquid supply pump (6), the output end of the liquid supply pump (6) is fixedly connected to one end of the No. 1 pipe (7), the other end of the No. 1 pipe (7) is connected to the diversion component, and the input end of the liquid supply pump (6) is fixedly connected to the No. 1 pipe (7). One end of the butt joint (20) is fixedly connected, the other end of the No. 1 butt joint (20) is fixedly connected to the output end of the refrigerator (8), the input end of the refrigerator (8) is fixedly connected to one end of the No. 2 butt joint (38), the other end of the No. 2 butt joint (38) is connected to the sealing component, the outer wall of the refrigerator (8) is fixedly connected to the upper surface of the anaerobic tower body (1), and the sealing component, the No. 2 butt joint (38), the refrigerator (8), the No. 1 butt joint (20), the liquid supply pump (6), the No. 1 pipe (7) and the diversion component are internally communicated.

3. The device for treating fresh coffee fruit processing wastewater according to claim 2, characterized in that: The diversion component includes a No. 2 multi-way pipe (19), a plurality of No. 6 pipes (18) and a plurality of No. 2 hard pipes (31). One end of the No. 2 multi-way pipe (19) is fixedly connected to an end of the No. 1 pipe (7) away from the liquid supply pump (6). The other ends of the No. 2 multi-way pipe (19) are respectively fixedly connected to one end of the plurality of No. 6 pipes (18). The other ends of the plurality of No. 6 pipes (18) are respectively fixedly connected to one end of the plurality of No. 2 hard pipes (31). The other ends of the plurality of No. 2 hard pipes (31) all pass through the interior of the gas collecting box (4) and are respectively fixedly connected to the input ends of the plurality of condensing plates (30). The No. 1 pipe (7), the No. 2 multi-way pipe (19), the No. 6 pipe (18), the No. 2 hard pipe (31) and the interior of the liquid flow cavity (36) are communicated.

4. The device for treating fresh coffee fruit processing wastewater according to claim 3, characterized in that: The normalization component includes a No. 3 tube (10), a No. 1 multi-way tube (17), a plurality of No. 5 tubes (16) and a plurality of No. 1 hard tubes (39), one end of the plurality of No. 1 hard tubes (39) is fixedly connected to the output ends of the plurality of condensation plates (30), the other ends of the plurality of No. 1 hard tubes (39) are all passed through the outside of the gas collecting box (4) and are fixedly connected to one end of the plurality of No. 5 tubes (16), the other ends of the plurality of No. 5 tubes (16) are fixedly connected to a plurality of connectors of the No. 1 multi-way tube (17), the last end of the No. 1 multi-way tube (17) is fixedly connected to one end of the No. 3 tube (10), the other end of the No. 3 tube (10) is connected to the sealing component, and the liquid flow cavity (36), the No. 1 hard tube (39), the No. 5 tube (16), the No. 1 multi-way tube (17) and the No. 3 tube (10) are internally communicated.

5. The device for treating fresh coffee fruit processing wastewater according to claim 4, characterized in that: The sealing assembly comprises a power tube (15), a liquid inlet tube (22), a liquid outlet tube (23) and a partition plate (32); the bottom surface of the power tube (15) is fixedly connected to the upper surface of the gas collecting box (4); the upper end of the power tube (15) is fixedly connected to one end of the liquid inlet tube (22); the other end of the liquid inlet tube (22) is fixedly connected to one end of the No. 3 pipe (10) away from the No. 1 multi-way tube (17); the lower end of the power tube (15) is fixedly connected to one end of the liquid outlet tube (23); the other end of the liquid outlet tube (23) is fixedly connected to the No. 2 pipe (9) away from the No. 2 docking tube (3 The first end of the power tube (8) is fixedly connected, the partition plate (32) is fixedly connected to the upper end of the power tube (15), the partition plate (32) separates the liquid inlet tube (22) and the liquid outlet tube (23), the upper surface of the partition plate (32) is penetrated by a liquid leakage port (33), the liquid leakage port (33) is located on the side of the liquid inlet tube (22), the transmission assembly is located on the side of the partition plate (32) close to the liquid inlet tube (22), the third tube (10), the liquid inlet tube (22), the power tube (15), the liquid leakage port (33), the liquid outlet tube (23) and the second tube (9) are internally connected.

6. The device for treating fresh coffee fruit processing wastewater according to claim 5, characterized in that: The transmission assembly comprises a first impeller (24) and a transmission rod (25), wherein the first impeller (24) is sleeved and fixedly connected to the outside of the transmission rod (25), and the first impeller (24) is located above the partition plate (32). The upper end of the transmission rod (25) passes through the upper part of the power tube (15) and is connected to the gear set, and the lower end of the transmission rod (25) passes through the partition plate (32) and the power tube (15) to the interior of the air collecting box (4) and is connected to a plurality of scraping assemblies.

7. The device for treating fresh coffee fruit processing wastewater according to claim 6, characterized in that: The scraping assembly includes a connecting ring (34) and a scraper (35), wherein the connecting ring (34) is sleeved on and fixedly connected to the outer wall of the transmission rod (25), the side wall of the connecting ring (34) is fixedly connected to one end of the scraper (35), and the upper surface of the scraper (35) is against the bottom surface of the condensation plate (30).

8. The device for treating fresh coffee fruit processing wastewater according to claim 7, characterized in that: The gear set comprises a protective cover (11), a large gear (26), a passive rod (27) and a small gear (28); the large gear (26) is sleeved on and fixedly connected to the outer wall of the transmission rod (25) at one end outside the power tube (15); the lower end of the passive rod (27) is connected to the air extraction component; the small gear (28) is sleeved on and fixedly connected to the outer wall of the upper end of the passive rod (27); the large gear (26) and the small gear (28) are meshed; the protective cover (11) is sleeved on the outside of the large gear (26), the passive rod (27) and the small gear (28); and the number of combinations of the large gear (26), the passive rod (27) and the small gear (28) is not less than two.

9. The device for treating fresh coffee fruit processing wastewater according to claim 8, characterized in that: The air extraction assembly comprises a No. 4 pipe (12), an air extraction shell (13), an exhaust pipe (14), a support plate (21), an air outlet pipe (29) and a No. 2 impeller (37). One end of the No. 4 pipe (12) and the support plate (21) are fixedly connected to the upper end of the air collecting box (4). The other ends of the No. 4 pipe (12) and the support plate (21) are fixedly connected to the outer wall of the air extraction shell (13). The No. 2 impeller (37) is located on the outer wall of the air extraction shell (13). The lower end of the passive rod (27) passes through the interior of the exhaust shell (13) and is fixedly connected to the upper surface of the No. 2 impeller (37); one end of the outlet pipe (29) is fixedly connected to the side wall of the exhaust shell (13); the other end of the outlet pipe (29) is fixedly connected to one end of the exhaust pipe (14); and the interiors of the gas collecting box (4), the No. 4 pipe (12), the exhaust shell (13), the outlet pipe (29) and the exhaust pipe (14) are communicated.

10. The method for treating fresh coffee fruit processing wastewater according to claim 9, comprising the following steps: Pretreatment: Use a screen to intercept large impurities such as peel fibers to reduce the risk of subsequent equipment clogging; add lime milk, sodium bicarbonate or return the digestion water for neutralization to adjust the pH value; then remove suspended matter and pectin through coagulation and sedimentation or flotation; Anaerobic tower treatment: Step 1: The pretreated wastewater is pumped to the bottom of the anaerobic tower body (1). The water distributor inside the anaerobic tower body (1) evenly distributes the wastewater to ensure sufficient contact with the granular sludge. Then, anaerobic microorganisms degrade organic matter to produce biogas. Step 2: The biogas, treatment liquid and sludge are separated by a three-phase separator inside the anaerobic tower body (1), wherein the biogas rises to the top gas collecting box (4), and part of the sludge flows back to the bottom of the anaerobic tower body (1) to maintain the microbial concentration, and the treatment liquid enters the subsequent aerobic treatment or deep treatment.

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