A coffee fresh fruit processing wastewater treatment device and method

Abstract

The application discloses a kind of coffee fresh fruit processing wastewater treatment device and method, including anaerobic tower main body, water inlet pipe being installed in the lower end of anaerobic tower main body, water outlet pipe and gas collection box being installed in the upper end of anaerobic tower main body, the upper end of anaerobic tower main body is connected with circulating cooling mechanism, the output end of circulating cooling mechanism is connected with shunt component, another end of shunt component is penetrated to the inside of gas collection box and is connected with several condensing plates, the inside of several condensing plates is all set with flow liquid cavity, another end of several condensing plates is all connected with homogenization component, another end of homogenization component is penetrated to the outside of gas collection box and is connected with sealing component.The application, by setting multiple condensing plates and low-temperature cooling circulation system in gas collection box, can quickly condense water vapor in biogas into liquid water, reduce biogas humidity, reduce the generation of acidic condensate in pipeline, significantly reduce the risk of metal corrosion, prolong the service life of equipment.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a device and method for treating wastewater from fresh coffee fruit processing. Background Technology

[0002] In the coffee bean production process, the first step is to harvest fully red cherries. After harvesting, they are washed twice with clean water using a flotation system, discarding any floating cherries. Next, the high-quality cherries are peeled using a peeling machine. The peeled pectin is extracted using an extrusion device and then appropriately hydrolyzed with enzymes (cellulase and pectinase). The peeled coffee beans are then placed in a sealed fermentation tank, along with a compound yeast strain, nutrient supplements, and an appropriate amount of pectin juice. Anaerobic fermentation takes place for 72-120 hours (this fermentation time is based on the ambient temperature of the fermentation site; adjustments are needed if the temperature fluctuates significantly, and the yeast needs to be activated and cultured). The fermentation tank is filled to about 80% capacity. The initial fermentation period (1-2 days) begins. The fermentation tank should be opened and shaken once a day to allow for adequate oxygenation. During the later stages of fermentation, the tank should be kept sealed to minimize oxygen involvement. After fermentation, the tank should be removed and dried. The drying period is between 10 and 14 days. The first day of drying should begin in the morning to midday to allow the moisture to decrease rapidly and more microorganisms to become inactive. (From the second day onwards, if the temperature is too high at midday, provide appropriate shade or pile the tank. Avoid direct sunlight during midday and control the drying speed appropriately.) A large amount of water will be used in the above steps. The resulting wastewater contains organic matter, sugars, and other nutrients and must be purified by a wastewater treatment device to avoid environmental pollution.

[0003] The treatment of wastewater from fresh coffee fruit processing often involves multiple stages, such as pretreatment (removing large particulate impurities, commonly through bar screen filtration), anaerobic digestion (degrading high-concentration organic matter, reducing COD load, and recovering biogas), aerobic treatment (further degrading residual organic matter and removing ammonia nitrogen and total phosphorus), advanced treatment (removing residual pollutants such as color, trace organic matter, and suspended solids), and disinfection discharge (killing pathogenic microorganisms and ensuring the safety of effluent).

[0004] Anaerobic digestion mostly utilizes anaerobic reactors (also known as anaerobic tanks or anaerobic towers). Currently, patent CN222389673U discloses an anaerobic reactor, which includes a reactor body, a sludge-water separation mechanism, an inlet mechanism, a water distribution mechanism, and a sludge discharge mechanism. The sludge-water separation mechanism includes a sludge separator, a water collection hopper, and a return pipe. The water collection hopper is located at the top of the reactor body below the liquid level. The sludge separator is connected to the water collection hopper. The first end of the return pipe is connected to the bottom of the sludge separator. The inlet mechanism is connected to the second end of the return pipe. The water distribution mechanism is connected to the inlet mechanism. The sludge discharge mechanism includes a sludge collection hopper, a sludge collection pipe, a main sludge discharge pipe, and sludge discharge branch pipes. The first end of the sludge collection pipe is connected to the inlet mechanism. Multiple sludge discharge branch pipes are connected to the sludge collection pipe. The second end of the sludge collection pipe is connected to the main sludge discharge pipe to discharge sludge from the reactor. This anaerobic reactor offers advantages such as high processing capacity, good sludge-water separation effect, and low maintenance cost.

[0005] However, the anaerobic reactors described above still have the following problems in 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 gas separation, in addition to methane and carbon dioxide as the main components, biogas typically contains a certain amount of water vapor. This water not only dilutes the methane concentration and reduces energy recovery efficiency but may also condense into acidic condensate on the inner wall of the pipe, leading to metal corrosion. However, current anaerobic reactors lack the capability for pre-separation of water vapor, which is 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] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: a coffee fresh fruit processing wastewater treatment device, comprising an anaerobic tower body, an inlet pipe installed at the lower end of the anaerobic tower body, an 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 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 penetrates into the interior of the gas collection box and is connected to a plurality of condensing plates, each of the plurality of condensing plates having a liquid flow chamber inside, the other end of each of the plurality of condensing plates being connected to a unifying component, the other end of the unifying component penetrating into the exterior of the gas collection box and being connected to a sealing component, a transmission component being provided inside the sealing component, the lower end of the transmission component penetrating into the interior of the gas collection box and being connected to a plurality of scraping components, the plurality of scraping components respectively abutting against the plurality of condensing plates, the upper end of the transmission component penetrating into the exterior of the sealing component and being connected to a gear set, the other end of the gear set being connected to an exhaust component, the input end of the exhaust component being connected to the gas collection box, and the lower end of the sealing component being connected to the input end of the circulating cooling mechanism.

[0009] Furthermore, the circulating cooling mechanism includes an L-shaped support, a liquid supply pump, a first pipe, a chiller, a second pipe, a first connecting pipe, and a second connecting pipe. One end of the L-shaped support is fixedly connected to the upper end of the anaerobic tower body, and the other end of the L-shaped support 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 first pipe, and the other end of the first pipe is connected to the diversion assembly. The input end of the liquid supply pump is fixedly connected to one end of the first connecting pipe, and the other end of the first connecting pipe is fixedly connected to the output end of the chiller. The input end of the chiller is fixedly connected to one end of the second connecting pipe, and the other end of the second connecting pipe is connected to the sealing assembly. The outer wall of the chiller is fixedly connected to the upper surface of the anaerobic tower body. The sealing assembly, the second connecting pipe, the chiller, the first connecting pipe, the liquid supply pump, the first pipe, and the diversion assembly are internally interconnected.

[0010] Furthermore, the diversion assembly includes a No. 2 multi-port pipe, several No. 6 pipes, and several No. 2 rigid pipes. One end of the No. 2 multi-port pipe is fixedly connected to the end of the No. 1 pipe away from the liquid supply pump. The other ends of the No. 2 multi-port pipe are fixedly connected to one end of several No. 6 pipes respectively. The other ends of several No. 6 pipes are fixedly connected to one end of several No. 2 rigid pipes respectively. The other ends of several No. 2 rigid pipes all penetrate into the interior of the gas collection box and are fixedly connected to the input end of several condenser plates respectively. The No. 1 pipe, the No. 2 multi-port pipe, the No. 6 pipe, the No. 2 rigid pipe, and the interior of the liquid flow chamber are connected.

[0011] Furthermore, the unification component includes a No. 3 pipe, a No. 1 multi-port pipe, several No. 5 pipes, and several No. 1 rigid pipes. One end of each of the No. 1 rigid pipes is fixedly connected to the output end of several condenser plates. The other end of each of the No. 1 rigid pipes extends to the outside of the gas collection box and is fixedly connected to one end of each of the No. 5 pipes. The other end of each of the No. 5 pipes is fixedly connected to several connectors of the No. 1 multi-port pipe. The last end of the No. 1 multi-port pipe is fixedly connected to one end of the No. 3 pipe. The other end of the No. 3 pipe is connected to the sealing component. The liquid flow chamber, the No. 1 rigid pipe, the No. 5 pipe, the No. 1 multi-port pipe, and the No. 3 pipe are internally connected.

[0012] Furthermore, the sealing assembly includes a power pipe, an inlet pipe, an outlet pipe, and a partition plate. The bottom surface of the power pipe is fixedly connected to the upper surface of the gas collection box. The upper end of the power pipe is fixedly connected to one end of the inlet pipe, and the other end of the inlet pipe is fixedly connected to the end of pipe No. 3 away from pipe No. 1. The lower end of the power pipe is fixedly connected to one end of the outlet pipe, and the other end of the outlet pipe is fixedly connected to the end of pipe No. 2 away from pipe No. 2. The partition plate is fixedly connected to the upper end inside the power pipe, separating the inlet pipe and the outlet pipe. A leakage port is provided through the upper surface of the partition plate, located on the side of the inlet pipe. The transmission assembly is located on the side of the partition plate near the inlet pipe. Pipe No. 3, the inlet pipe, the power pipe, the leakage port, the outlet pipe, and pipe No. 2 are internally connected.

[0013] Furthermore, the transmission assembly includes a first impeller and a transmission rod. The first impeller is sleeved and fixedly connected to the outside of the transmission rod. The first impeller is located above the partition plate. The upper end of the transmission rod extends through to the top of the power pipe and is connected to the gear set. The lower end of the transmission rod extends through the partition plate and the power pipe to the inside of the air collection box and is connected to several scraping components.

[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 abuts against the bottom surface of the condenser plate.

[0015] Furthermore, the gear set includes a protective cover, a large gear, a driven rod, and a small gear. The large gear is sleeved and fixedly connected to the outer wall of the transmission rod at the end outside the power tube. The lower end of the driven rod is connected to the air extraction assembly. The small gear is sleeved and fixedly connected to the outer wall of the upper end of the driven rod. The large gear and the small gear mesh. The protective cover is sleeved on the outside of the large gear, the driven rod, and the small gear. The number of combinations of the large gear, the driven rod, and the small gear is not less than two sets.

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

[0017] A method for treating wastewater from fresh coffee cherry processing includes the following steps:

[0018] Pretreatment: Use a screen to intercept large particles of impurities such as fruit peel fibers to reduce the risk of clogging in subsequent equipment; add lime milk, sodium bicarbonate or recycle digester effluent to neutralize and adjust the pH value; then remove suspended solids and pectin through coagulation 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 distributes the wastewater evenly to ensure full contact with the granular sludge. Then, biogas is produced by the degradation of organic matter by anaerobic microorganisms.

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

[0022] The beneficial effects of this invention are:

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

[0024] This coffee fresh fruit processing wastewater treatment device uses a scraping component that is linked to the flow of coolant via a transmission rod to scrape away condensate droplets and dirt from the surface of the condenser plate in real time, preventing freezing or scaling from affecting heat exchange efficiency and reducing the frequency of manual maintenance.

[0025] This coffee fresh fruit processing wastewater treatment device uses a refrigeration unit to cool the coolant and then recycle it. It achieves uniform cooling of multiple condenser plates through a unifying component and a diverting component. At the same time, it 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] This coffee fresh fruit processing wastewater treatment device uses a gear set to amplify the rotation speed of the air extraction component, creating negative pressure in the gas collection box to accelerate the flow and collection of biogas and prevent gas accumulation from causing a decrease in the efficiency of three-phase separation.

[0027] This coffee fruit processing wastewater treatment device features a diversion and unification component that allows for flexible adjustment of the number of condenser plates according to the processing scale, adapting to different processing capacities and exhibiting strong scalability.

[0028] This coffee fruit processing wastewater treatment device, through the design of sealed components and protective covers, ensures complete isolation between the coolant and biogas path, avoiding cross-contamination, and at the same time preventing external environmental interference with the operation of transmission components. Attached Figure Description

[0029] Figure 1 This 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 invention from another perspective;

[0031] Figure 3 This is a detailed connection diagram of the components of the present invention, including the gas collection box, the circulating cooling mechanism, and the two flow splitting assemblies.

[0032] Figure 4 For the present invention Figure 3 Cross-sectional schematic diagram of the middle part;

[0033] Figure 5 This is a cross-sectional schematic diagram of the components of the present invention, including the gas collection box, the circulating cooling mechanism, and the two flow splitting components;

[0034] Figure 6 This is a detailed connection diagram of the transmission assembly and the condenser plate of the present invention;

[0035] Figure 7 This is a detailed connection diagram of the transmission component and the scraping component of the present invention;

[0036] Figure 8 This is a cross-sectional schematic diagram of the condenser plate of the present invention;

[0037] Figure 9 This is a detailed connection diagram of the gear set and the air extraction assembly of the present invention.

[0038] In the diagram: 1. Anaerobic tower main body; 2. Inlet pipe; 3. Outlet pipe; 4. Gas collection box; 5. L-shaped support; 6. Liquid supply pump; 7. Pipe No. 1; 8. Refrigeration unit; 9. Pipe No. 2; 10. Pipe No. 3; 11. Protective cover; 12. Pipe No. 4; 13. Evacuation shell; 14. Exhaust pipe; 15. Power pipe; 16. Pipe No. 5; 17. Multi-port pipe No. 1; 18. Pipe No. 6; 19. Multi-port pipe No. 2; 20. Pair No. 1 21. Connecting pipe; 22. Support plate; 23. Inlet pipe; 24. Outlet pipe; 25. Impeller No. 1; 26. Drive rod; 27. Large gear; 28. Passive rod; 29. ​​Small gear; 30. Outlet pipe; 31. Condensing plate; 32. Hard pipe No. 2; 33. Divider plate; 34. Leakage port; 35. Connecting ring; 36. Scraper; 37. Flow chamber; 38. Impeller No. 2; 39. Hard pipe No. 1. Detailed Implementation

[0039] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding the present invention, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0040] Please see Figures 1-9 A wastewater treatment device for fresh coffee fruit processing 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 a gas collection 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 extends into the interior of the gas collection box 4 and is connected to several condensing plates 30. Each of the several condensing plates 30 has a liquid flow chamber 36 inside. The other end of each of the several condensing plates 30 is connected to a unifying component. The other end of the unifying component extends into the exterior of the gas collection box 4 and is connected to a sealing component. The sealing component is equipped with a transmission component. The lower end of the transmission component extends into the interior of the gas collection box 4 and is connected to several scraping components. The several scraping components abut against the several condensing plates 30 respectively. The upper end of the transmission component extends into the exterior of the sealing component and is connected to a gear set. The other end of the gear set is connected to an air extraction component. The input end of the air extraction component is connected to the gas collection box 4. The lower end of the sealing component is connected to the input end of the circulating cooling mechanism.

[0041] It is important to note that the anaerobic tower body 1, inlet pipe 2, outlet pipe 3, and gas collection box 4 utilize mature technologies from existing anaerobic towers. Furthermore, the anaerobic tower body 1 includes a water distribution system that evenly distributes the influent to the bottom of the reactor to ensure sufficient contact between the wastewater and microorganisms; a sludge bed that serves as the primary carrier for anaerobic microorganisms, accumulating high-concentration granular or flocculent sludge; a biological carrier zone (packing layer) that provides surface area for microbial attachment and growth, enhancing biomass and providing stability; a three-phase separator that separates biogas, sludge, and treated water to ensure stable reactor operation; a device for timely removal of scum (such as pectin and grease) generated within the reactor; a scum rapid discharge device to prevent clogging or impaired mass transfer; a reflux system that enables internal circulation or external recirculation, enhancing mass transfer and resistance to shock loads; a control system that monitors and adjusts reactor operating parameters to ensure stable and efficient operation; a sedimentation zone at the top of the reactor for further separation of sludge and effluent; and a gas-liquid separation zone that separates biogas from the sludge-water mixture and drives internal circulation. The installation location, connection relationships, and working principles of these components will not be detailed here.

[0042] As a preferred embodiment of the present invention, the circulating cooling mechanism includes an L-shaped support 5, a liquid supply pump 6, a first pipe 7, a chiller 8, a second pipe 9, a first connecting pipe 20, and a second connecting pipe 38. One end of the L-shaped support 5 is fixedly connected to the upper end of the anaerobic tower body 1, and the other end of the L-shaped support 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 first pipe 7, and the other end of the first pipe 7 is connected to the diversion assembly. The input end of the liquid supply pump 6 is fixedly connected to one end of the first connecting pipe 20, and the other end of the first connecting pipe 20 is fixedly connected to the output end of the chiller 8. The input end of the chiller 8 is fixedly connected to one end of the second connecting pipe 38, and the other end of the second connecting pipe 38 is connected to the sealing assembly. The outer wall of the chiller 8 is fixedly connected to the upper surface of the anaerobic tower body 1. The sealing assembly, the second connecting pipe 38, the chiller 8, the first connecting pipe 20, the liquid supply pump 6, the first pipe 7, and the diversion assembly are internally connected.

[0043] More specifically, by setting up a circulating cooling mechanism, low-temperature coolant can be pumped into the liquid flow chamber 36 of the condenser plate 30, so that when the biogas comes into contact with the condenser plate 30, the water vapor contained in the biogas can be liquefied, thereby achieving separation.

[0044] As a preferred embodiment of the present invention, the diversion assembly includes a No. 2 multi-port pipe 19, a plurality of No. 6 pipes 18, and a plurality of No. 2 rigid pipes 31. One end of the No. 2 multi-port pipe 19 is fixedly connected to the end of the No. 1 pipe 7 away from the liquid supply pump 6. The other ends of the No. 2 multi-port pipe 19 are respectively fixedly connected to one end of a 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 a plurality of No. 2 rigid pipes 31. The other ends of the plurality of No. 2 rigid pipes 31 all penetrate into the interior of the gas collection box 4 and are respectively fixedly connected to the input end of a plurality of condenser plates 30. The No. 1 pipe 7, the No. 2 multi-port pipe 19, the No. 6 pipes 18, the No. 2 rigid pipes 31, and the liquid flow chamber 36 are internally connected.

[0045] More specifically, by setting up a flow splitting component, the coolant pumped in by the circulating cooling mechanism can be divided into multiple groups to ensure that an appropriate amount of coolant flows into each of the several condenser plates 30. In addition, flow detection sensors and solenoid valves can be set in the No. 2 multi-port pipe 19 or several No. 6 pipes 18 to monitor the flow rate in real time. If the flow rate of coolant entering the several No. 6 pipes 18 is not appropriate, it can be adjusted in time.

[0046] As a preferred embodiment of the present invention, the unification component includes a No. 3 pipe 10, a No. 1 multi-port pipe 17, several No. 5 pipes 16, and several No. 1 rigid pipes 39. One end of each of the No. 1 rigid pipes 39 is fixedly connected to the output end of several condenser plates 30. The other end of each of the No. 1 rigid pipes 39 extends to the outside of the gas collection box 4 and is fixedly connected to one end of each of the several No. 5 pipes 16. The other end of each of the No. 5 pipes 16 is fixedly connected to several connectors of the No. 1 multi-port pipe 17. The last end of the No. 1 multi-port pipe 17 is fixedly connected to one end of the No. 3 pipe 10. The other end of the No. 3 pipe 10 is connected to the sealing component. The internal components of the liquid flow chamber 36, the No. 1 rigid pipe 39, the No. 5 pipe 16, the No. 1 multi-port pipe 17, and the No. 3 pipe 10 are interconnected.

[0047] More specifically, by setting up a unification component, the coolant that has already undergone heat exchange can be accurately guided into the sealing component to achieve subsequent cooling cycles.

[0048] In a preferred embodiment of the present invention, the sealing assembly includes a power pipe 15, an inlet pipe 22, an outlet pipe 23, and a partition plate 32. The bottom surface of the power pipe 15 is fixedly connected to the upper surface of the gas collection box 4. The upper end of the power pipe 15 is fixedly connected to one end of the inlet pipe 22, and the other end of the inlet pipe 22 is fixedly connected to the end of the third pipe 10 away from the first multi-way pipe 17. The lower end of the power pipe 15 is fixedly connected to one end of the outlet pipe 23, and the other end of the outlet pipe 23 is connected to the second pipe 9. One end of the pipe away from the No. 2 connecting pipe 38 is fixedly connected. The partition plate 32 is fixedly connected to the upper end of the power pipe 15. The partition plate 32 separates the inlet pipe 22 and the outlet pipe 23. The upper surface of the partition plate 32 is provided with a leakage port 33. The leakage port 33 is located on the side of the inlet pipe 22. The transmission component is located on the side of the partition plate 32 near the inlet pipe 22. The No. 3 pipe 10, the inlet pipe 22, the power pipe 15, the leakage port 33, the outlet pipe 23 and the No. 2 pipe 9 are internally connected.

[0049] More specifically, by setting up a sealing component, the coolant delivered by the unified component can be collected together to facilitate subsequent cooling and circulation; 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 embodiment of the present invention, the transmission assembly includes a first impeller 24 and a transmission rod 25. The first impeller 24 is sleeved and fixedly connected to the outside of the transmission rod 25. The first impeller 24 is located above the partition plate 32. The upper end of the transmission rod 25 extends through the upper part of the power pipe 15 and is connected to the gear set. The lower end of the transmission rod 25 extends through the partition plate 32 and the power pipe 15 to the interior of the air collection box 4 and is connected to several scraping components.

[0051] More specifically, by setting up a transmission component, the rotation of the transmission component can drive the scraping component to scrape the bottom surface of the condenser plate 30. At the same time, after the rotation speed is amplified by the gear set, the gas extraction component accelerates the extraction of biogas from the gas collection box 4.

[0052] As a preferred embodiment 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 abuts against the bottom surface of the condensation plate 30.

[0053] More specifically, after water vapor comes into contact with the condenser plate 30, the water vapor will liquefy into water droplets because the temperature of the condenser plate 30 is low. In order to prevent the water droplets from affecting the subsequent condensation of water vapor, and also to prevent the water droplets from freezing due to continuous contact with the low temperature, a scraping component is set up to scrape off the liquefied water droplets, thereby reducing the impact on the condenser plate 30.

[0054] As a preferred embodiment of the present invention, the gear set includes a protective cover 11, a large gear 26, a driven 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 located outside the power pipe 15. The lower end of the driven rod 27 is connected to the air extraction assembly. The small gear 28 is sleeved and fixedly connected to the outer wall of the upper end of the driven rod 27. The large gear 26 and the small gear 28 mesh. The protective cover 11 is sleeved on the outside of the large gear 26, the driven rod 27, and the small gear 28. The number of combinations of the large gear 26, the driven rod 27, and the small gear 28 is not less than two sets.

[0055] More specifically, since the rotation speed of the transmission component mainly relies on the coolant delivered by the unifying component, the rotation speed of the transmission component is usually not too fast. At this time, by setting up a gear set, the rotation of the air extraction component can be accelerated, thereby generating a larger air force.

[0056] As a preferred embodiment of the present invention, the air extraction assembly includes a fourth pipe 12, an air extraction shell 13, an exhaust pipe 14, a support plate 21, an air outlet pipe 29, and a second impeller 37. One end of the fourth pipe 12 and the support plate 21 are fixedly connected to the upper end of the air collection box 4, and the other end of the fourth pipe 12 and the support plate 21 are fixedly connected to the outer wall of the air extraction shell 13. The second impeller 37 is located inside the air extraction shell 13. The lower end of the passive rod 27 penetrates into the interior of the air extraction shell 13 and is fixedly connected to the upper surface of the second impeller 37. One end of the air outlet pipe 29 is fixedly connected to the side wall of the air extraction shell 13, and the other end of the air outlet pipe 29 is fixedly connected to one end of the exhaust pipe 14. The air collection box 4, the fourth pipe 12, the air extraction shell 13, the air outlet pipe 29, and the exhaust pipe 14 are internally connected.

[0057] More specifically, by setting up an air extraction component, the speed of extracting biogas from inside the gas collection box 4 can be accelerated.

[0058] Working principle of the invention:

[0059] Pretreatment: Use a screen to intercept large particles of impurities such as fruit peel fibers to reduce the risk of clogging in subsequent equipment; add lime milk, sodium bicarbonate or recycle digester effluent to neutralize and adjust the pH value; then remove suspended solids and pectin through coagulation 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 distributes the wastewater evenly to ensure full contact with the granular sludge. Then, biogas is produced by the degradation of organic matter by anaerobic microorganisms.

[0062] Step 2: Biogas, treated liquid and sludge are separated by a three-phase separator inside the anaerobic tower body 1. Biogas rises to the top gas collection box 4, some sludge flows back to the bottom of the anaerobic tower body 1 to maintain the microbial concentration, and the treated liquid enters the subsequent aerobic treatment or advanced treatment.

[0063] Step 3: When the biogas rises into the gas collection box 4, a low-temperature coolant flows through the liquid flow chamber 36 of the condenser plate 30 (this low temperature is determined by the actual situation; for example, under normal pressure, the water vapor in the biogas may be between -10℃ and -20℃, so the coolant only needs to ensure that the surface temperature of the condenser plate 30 is below this temperature). After the biogas comes into contact with the bottom surface of the condenser plate 30, it will quickly liquefy into water droplets (the upper surface of the condenser plate 30 is provided with a cold insulation material, which can prevent the water droplets dripping from the upper condenser plate 30 from accumulating or freezing on the upper surface of the condenser plate 30).

[0064] After the coolant flows through the flow chamber 36, it enters the first rigid pipe 39, then enters the fifth pipe 16 from the first rigid pipe 39, then merges from several fifth pipes 16 into the first multi-port pipe 17, and finally enters the inlet pipe 22 from the third pipe 10.

[0065] The coolant entering the inlet pipe 22 will enter the power pipe 15. Because the coolant in several pipes 16 merges together, it will generate a large water pressure and impact force. At this time, this impact force will hit the surface of the first impeller 24 located in the power pipe 15, and then push the first impeller 24 to rotate. After that, this part of the coolant will fall from the drain port 33 of the partition plate 32 to the bottom of the power pipe 15 after rotating a certain distance with the first impeller 24.

[0066] The coolant falling to the bottom of the power pipe 15 will enter the second pipe 9 through the outlet pipe 23, and then enter the refrigerator 8 through the second connecting pipe 38. After the refrigerator 8 lowers the temperature of the coolant to the set low temperature, it will be drawn by the liquid supply pump 6 through the first connecting pipe 20 and pumped into the first pipe 7. Then the coolant will enter the second multi-port pipe 19, and then enter the second rigid pipe 31 through several sixth pipes 18. Finally, it will return to the flow chamber 36 of the condenser plate 30 to achieve 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 will push the first impeller 24 to rotate via the transmission rod 25. When the transmission rod 25 rotates, the end of the transmission rod 25 located inside the air collection box 4 can rotate along with several connecting rings 34. Subsequently, the connecting rings 34 will rotate along with the scraper 35, thereby scraping the bottom surface of the condenser plate 30 to scrape off the condensed water droplets.

[0068] Additionally, when the transmission rod 25 rotates, its upper end also causes the large gear 26 to rotate inside the protective cover 11. After rotating, the large gear 26 meshes with the small gear 28, causing the driven rod 27 to rotate (because there are at least two sets of large gear 26, driven rod 27, and small gear 28, such as...). Figure 4 and Figure 9 Each set is driven by a large gear 26 to rotate a small gear 28, thereby increasing the rotation speed of the passive rod 27, which in turn can drive the second impeller 37 to rotate rapidly inside the suction shell 13.

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

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

Claims

1. A wastewater treatment device for fresh coffee fruit processing, comprising 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 a gas collection 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 penetrates into the interior of the gas collection box (4) and is connected to several condensing plates (30). Each of the several condensing plates (30) has a liquid flow chamber (36) inside. The other end of each of the several condensing plates (30) is connected to a unifying component. The other end of the unifying component penetrates into the exterior of the gas collection box (4) and is connected to a sealing component. The interior of the sealing component is provided with a transmission component. The lower end of the transmission component penetrates into the interior of the gas collection box (4) and is connected to several scraping components. Each of the several scraping components abuts against several condensing plates (30). The upper end of the transmission component penetrates into the exterior of the sealing component and is connected to a gear set. The other end of the gear set is connected to a suction component. The input end of the suction component is connected to the gas collection box (4). The lower end of the sealing component is connected to the input end of the circulating cooling mechanism. The sealing assembly includes a power pipe (15), an inlet pipe (22), an outlet pipe (23), and a partition plate (32). The bottom surface of the power pipe (15) is fixedly connected to the upper surface of the gas collection box (4). The upper end of the power pipe (15) is fixedly connected to one end of the inlet pipe (22). The lower end of the power pipe (15) is fixedly connected to one end of the outlet pipe (23). The partition plate (32) is fixedly connected to the upper end inside the power pipe (15). The partition plate (32) separates the inlet pipe (22) and the outlet pipe (23). The transmission assembly includes a first impeller (24) and a transmission rod (25). The first impeller (24) is sleeved and fixedly connected to the outside of the transmission rod (25). The first impeller (24) is located above the partition plate (32). The upper end of the transmission rod (25) extends through the upper part of the power pipe (15) and is connected to the gear set. The lower end of the transmission rod (25) extends through the partition plate (32) and the power pipe (15) to the inside of the air collection box (4) and is connected to several scraping components. 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) abuts against the bottom surface of the condenser plate (30). The gear set includes a protective cover (11), a large gear (26), a driven 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) located outside the power tube (15). The lower end of the driven rod (27) is connected to the air extraction assembly. The small gear (28) is sleeved and fixedly connected to the outer wall of the upper end of the driven rod (27). The large gear (26) and the small gear (28) mesh. The protective cover (11) is sleeved on the outside of the large gear (26), the driven rod (27), and the small gear (28). The number of combinations of the large gear (26), the driven rod (27), and the small gear (28) is not less than two sets. The air extraction assembly includes a fourth pipe (12), an air extraction shell (13), an exhaust pipe (14), a support plate (21), an exhaust pipe (29), and a second impeller (37). One end of the fourth pipe (12) and the support plate (21) are fixedly connected to the upper end of the air collection box (4), and the other end of the fourth pipe (12) and the support plate (21) are fixedly connected to the outer wall of the air extraction shell (13). The second impeller (37) is located in the air extraction shell (13). Inside the chamber, the lower end of the passive rod (27) extends into the interior of the suction shell (13) and is fixedly connected to the upper surface of the second impeller (37). One end of the exhaust pipe (29) is fixedly connected to the side wall of the suction shell (13), and the other end of the exhaust pipe (29) is fixedly connected to one end of the exhaust pipe (14). The air collection box (4), the fourth pipe (12), the suction shell (13), the exhaust pipe (29), and the exhaust pipe (14) are internally connected.

2. The coffee fruit processing wastewater treatment device according to claim 1, characterized in that: The circulating cooling mechanism includes an L-shaped support (5), a liquid supply pump (6), a first pipe (7), a chiller (8), a second pipe (9), a first connecting pipe (20), and a second connecting pipe (38). One end of the L-shaped support (5) is fixedly connected to the upper end of the anaerobic tower body (1), and the other end of the L-shaped support (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 first pipe (7), and the other end of the first pipe (7) is connected to the diversion assembly. The input end of the liquid supply pump (6) is connected to the first pipe (9). One end of the connecting pipe (20) is fixedly connected, and the other end of the first connecting pipe (20) is fixedly connected to the output end of the chiller (8). The input end of the chiller (8) is fixedly connected to one end of the second connecting pipe (38). The other end of the second connecting pipe (38) is connected to the sealing assembly. The outer wall of the chiller (8) is fixedly connected to the upper surface of the anaerobic tower body (1). The sealing assembly, the second connecting pipe (38), the chiller (8), the first connecting pipe (20), the liquid supply pump (6), the first pipe (7), and the diversion assembly are internally connected.

3. The coffee fruit processing wastewater treatment device according to claim 2, characterized in that: The diversion assembly includes a No. 2 multi-port pipe (19), several No. 6 pipes (18), and several No. 2 hard pipes (31). One end of the No. 2 multi-port pipe (19) is fixedly connected to the end of the No. 1 pipe (7) away from the liquid supply pump (6). The other ends of the No. 2 multi-port pipe (19) are fixedly connected to one end of several No. 6 pipes (18). The other ends of several No. 6 pipes (18) are fixedly connected to one end of several No. 2 hard pipes (31). The other ends of several No. 2 hard pipes (31) all penetrate into the interior of the gas collection box (4) and are fixedly connected to the input end of several condenser plates (30). The No. 1 pipe (7), the No. 2 multi-port pipe (19), the No. 6 pipe (18), the No. 2 hard pipe (31), and the liquid flow chamber (36) are internally connected.

4. The coffee fruit processing wastewater treatment device according to claim 3, characterized in that: The unification component includes a No. 3 pipe (10), a No. 1 multi-port pipe (17), several No. 5 pipes (16), and several No. 1 hard pipes (39). One end of several No. 1 hard pipes (39) is fixedly connected to the output end of several condenser plates (30). The other end of several No. 1 hard pipes (39) extends to the outside of the gas collection box (4) and is fixedly connected to one end of several No. 5 pipes (16). The other end of several No. 5 pipes (16) is fixedly connected to several connectors of the No. 1 multi-port pipe (17). The last end of the No. 1 multi-port pipe (17) is fixedly connected to one end of the No. 3 pipe (10). The other end of the No. 3 pipe (10) is connected to the sealing component. The internal components of the flow chamber (36), No. 1 hard pipe (39), No. 5 pipe (16), No. 1 multi-port pipe (17), and No. 3 pipe (10) are interconnected.

5. The coffee fruit processing wastewater treatment device according to claim 4, characterized in that: The other end of the inlet pipe (22) is fixedly connected to the end of the third pipe (10) away from the first multi-port pipe (17). The other end of the outlet pipe (23) is fixedly connected to the end of the second pipe (9) away from the second connecting pipe (38). A drain port (33) is provided through the upper surface of the partition plate (32). The drain port (33) is located on the side of the inlet pipe (22). The transmission assembly is located on the side of the partition plate (32) close to the inlet pipe (22). The third pipe (10), the inlet pipe (22), the power pipe (15), the drain port (33), the outlet pipe (23) and the second pipe (9) are internally connected.

6. The method for treating coffee fruit processing wastewater according to claim 5, comprising the following steps: Pretreatment: Use a screen to intercept large particles of impurities and reduce the risk of clogging in subsequent equipment; add lime slurry, sodium bicarbonate or recycle digester effluent to neutralize and adjust the pH value; then remove suspended solids and pectin through coagulation 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) distributes the wastewater evenly to ensure full contact with the granular sludge. Then, biogas is generated by the degradation of organic matter by anaerobic microorganisms. Step 2: The biogas, treatment liquid and sludge are separated by the three-phase separator inside the anaerobic tower body (1). The biogas rises to the top gas collection box (4), some 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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