Kitchen waste treatment device with solid recycling device and solid recycling method using same

Abstract

The present invention relates to a kitchen waste treatment device having a solid recycling device and a solid recycling method using the same, and more particularly, to a method for quickly fermenting and decomposing kitchen waste into a solid-containing suspension by using microorganisms and carrier balls, filtering the solid-containing suspension by using a porous sponge once or n times or more, and recycling the solid by using the solid-recycling device. And finally, the clear pure water is naturally discharged, and the solid-containing suspension is repeatedly recycled and subjected to a multi-stage filtration process by using a food fermentation part, so that the solid outflow rate of treated water discharged into a sewage pipeline or a sewer is remarkably reduced, and only the clear pure water is discharged to be used as a fertilizer. According to the kitchen waste treatment device with the solid recycling device and the solid recycling method using the kitchen waste treatment device, solid recycling with sufficient fermentation and moisture removal is achieved.

Description

Technical Field

[0001] The present invention relates to a restaurant waste treatment device with a solid resource recovery device and a solid resource recovery method using the device. More specifically, the present invention relates to a restaurant waste treatment device with a solid resource recovery device, which utilizes microorganisms and carrier balls to quickly ferment and decompose restaurant waste into a suspension containing solids, and filters the suspension once or more than n times through a porous sponge, so that clear pure water is naturally discharged eventually. The suspension containing solids is repeatedly recycled and subjected to a multi-stage filtration process by a food fermentation unit, thereby significantly reducing the solid outflow rate of treated water discharged into a sewage pipe or sewer, and only discharging clear pure water for use as fertilizer, thereby achieving sufficient fermentation and water-removed solid resource recovery, and a solid resource recovery method using the device. Background Art

[0002] Generally, in recent years, with the development of various catering industries, the amount of catering logistics waste, Food Waste and other catering kitchen waste has increased exponentially.

[0003] The amount of these food wastes is huge, accounting for 1 / 3 of the total garbage. Not only do they rot quickly and have a strong stench, but they also have high processing costs and high moisture content, and have become a serious social problem.

[0004] At present, there are two methods for treating food waste: landfill and metering bag. Since it is difficult to secure a site for food waste landfill and the food waste has high water content such as protein, carbohydrates, fat, cellulose, etc., it will not only release a variety of pollutants, but also cause groundwater pollution by leachate and air pollution by harmful gases. The method of using metering bags has the disadvantages of generating stench due to the rapid decay of food waste in the bags and it is difficult to secure specialized personnel for treatment and collection.

[0005] In order to solve these problems, households and restaurants use drying, crushing, microbial utilization and other methods to treat food waste. Since dry food uses a heating device to dry food waste to reduce the moisture content, it consumes electricity frequently, has high maintenance costs, has a strong odor, and poses a risk of electric shock.

[0006] The pulverization method uses rotating blades to pulverize and crush the food waste and then discharge it through the sewer, so it takes up a lot of space and has high installation costs. After pulverization, about 80% of the food waste needs to be recycled and processed separately. The microbial utilization method is to mix and ferment the food waste with microorganisms, so the treatment efficiency is very high and can solve various problems of existing methods at the same time. Therefore, various studies on this method are underway.

[0007] At the same time, in the existing system, since solids are discharged into the sewer without being reprocessed and collected, when the catering logistics waste stipulated in Article 10, Paragraph 4 of the Implementation Rules of the Waste Management Act is met, the weight of solids discharged together with the discharged water after being recycled and processed by relevant facilities is limited to less than 20% of the weight of the incoming solids. There is a limitation in that, over time, there is a problem of solids being deposited in the sewer and possibly causing the sewer function to be paralyzed.

[0008] In addition, there is the problem of incomplete fermentation of liquid food waste, which may result in residual foul-smelling solids being discharged along with the wastewater.

[0009] In addition, according to the Waste Management Act, stores that discharge large amounts of food waste must entrust the waste to the waste treatment industry for processing or have it recycled through resource recovery equipment. In this case, during the recycling process, the amount of solids discharged along with the solids needs to be limited to less than 20% of the amount of solids using efficient food processing equipment. Summary of the invention

[0010] Technical issues to be solved The present invention is proposed in view of the above-mentioned problems, and its purpose is to provide a food waste treatment device with a solid resource recovery device, which utilizes microorganisms and carrier balls to quickly ferment and decompose the food waste entering the food fermentation section into a suspension containing solids, and then filters it once or n times or more through a porous sponge, and finally allows clear pure water to be naturally discharged.

[0011] Another object of the present invention is to use a porous sponge inhabited by microorganisms to form a fermentation tank, and store carrier balls at a predetermined height inside the fermentation tank to stir them together with food waste, thereby eliminating the stirring blind area caused by the flow of the carrier balls and promoting the biodegradation of the food waste.

[0012] Another object of the present invention is to significantly reduce the outflow rate of solids in treated water discharged into a sewage pipe or sewer by repeatedly recycling the suspension containing solids fermented from microbial liquid to the food fermentation section and performing a multi-stage filtration process, so that only clear pure water is discharged, thereby preventing environmental pollution caused by the treatment of food waste.

[0013] Another object of the present invention is to circulate and discharge the treated water from which solids are filtered from a sponge box having pumping, carrier and filtering functions into a solid recovery barrel, thereby reducing the energy generated by heating hot water. By reusing the discharged water, waste of tap water can be prevented.

[0014] Another object of the present invention is to discharge the solid from the sponge box in the form of dry powder for use as fertilizer after a second full fermentation and dehydration. Since the dry powder is in a state of full fermentation and dehydration, it can be stored for a long time, which is convenient for users to use when needed. The number of recycling times and recycling amount can be adjusted arbitrarily according to user needs, thereby adjusting the recycling cycle.

[0015] Another object of the present invention is that since the fermentation tank and the filtering device are made of porous sponge, they are easy to replace, and the food waste treatment device using microorganisms can be produced and effectively supplied at low cost.

[0016] Another object of the present invention is to minimize the outflowing micro-solids by repeatedly recycling and reusing hot water, repeatedly filtering micro-solids, and saving electric energy by heating hot water, and to have the effect that the effluent water finally discharged is clear purified treated water.

[0017] Another object of the present invention is to provide a method for the solid resource utilization of a food waste treatment device, which utilizes microorganisms and carrier balls to rapidly ferment and decompose food waste into a suspension containing solids, and then filters the suspension through a porous sponge once or more than n times, so that clear clean water is naturally discharged. The solid outflow rate of the treated water is significantly reduced by repeatedly recycling the suspension containing solids from the food fermentation section and performing a multi-stage filtration process, so that only clear clean water is discharged and used as fertilizer at the same time, thereby achieving solid resource utilization with sufficient fermentation and water removal.

[0018] Technical Solution In order to achieve the above-mentioned purpose, the kitchen waste treatment device with a solid resource recovery device of the present invention is characterized in that it includes: a shell having an inlet formed thereon; an inner barrel, the inlet being communicated with the inner barrel; a food fermentation section, which is embedded in the upper part of the inner barrel and is biodegraded by microorganisms while stirring the food waste falling through the inlet, so that its liquid is fermented into a suspension; a pumping device, which is used to spray the suspension containing solids falling to the bottom of the inner barrel to the food fermentation section again and circulate it; a filtering device, which is used to filter the solids and suspensions dropped and stored from the food fermentation section 1 or more times and purify them into clear pure water; and a heating device, which is connected to the bottom of the inner barrel and is used to promote liquid fermentation and decomposition of microorganisms; a solid resource recovery device, which is installed on the upper part of one side of the inner barrel and is used to pump, ferment and dry the turbid water containing solids discharged from the food fermentation section using the carrier and filtering functions.

[0019] The food fermentation part includes: a fermentation tank, which is used to allow the food waste to be biodegraded by microorganisms and to perform liquid fermentation; a support frame, which is fixed on the inner barrel to support the bottom of the fermentation tank; a stirring device, which is arranged in the fermentation tank and is used to stir the food waste; carrier balls, which are stored at a predetermined height in the fermentation tank and are composed of different sizes, so that the food waste is refined and the stirring blind area of ​​the food waste is eliminated through flow, so that the food waste is dispersed in the entire fermentation tank. The fermentation tank is composed of a porous sponge for the habitation of microorganisms and the falling of liquid fermentation suspension.

[0020] In addition, the stirring device includes: a plurality of stirring shafts arranged at predetermined intervals in the fermentation tank; a first stirring blade, which is connected to a plurality of stirring platforms in the left and right radial directions of each of the stirring shafts; and a second stirring blade, which is connected to a plurality of stirring platforms in the upper and lower radial directions of each of the stirring shafts. At this time, the rotation radius of the first stirring blade is relatively larger than the rotation radius of the second stirring blade, thereby minimizing the stirring blind area, so that each of the stirring shafts is connected to the outside of the shell in an exposed manner, a sprocket is connected to the exposed stirring shaft, and each of the sprockets can be configured to rotate simultaneously by meshing with a chain or belt rotated by a driving device, and the height and spacing of each stirring shaft are composed of a height and spacing corresponding to the rotation radius, so that the first stirring blade does not contact the bottom surface of the fermentation tank.

[0021] In addition, the pumping device includes: a submersible pump installed in the suspension stored in the inner barrel; an injection pipe connected to the submersible pump and the nozzle is exposed to the inside of the fermentation tank. The inner barrel is also provided with a water level sensor at the bottom to control whether the submersible pump is running, and an interference plate is provided at the top so that the suspension containing solids injected from the nozzle is diffused to the entire inner barrel through collision.

[0022] In addition, the filtering device includes: a first inclined filter, one side of which is fixed at a position higher than the outlet so as to guide the solids and suspensions flowing down from the food fermentation unit to the bottom of the inner barrel, and the other side is fixed close to the bottom of the inner barrel and arranged inclined in the form of a right-angled triangle slope, a second inclined filter having 1 or n structures perpendicular to the bottom of the first inclined filter; and a cover filter, which surrounds the inclined slope at the same angle as the first inclined filter so as to surround the outlet in a triangular structure, and the bottoms of the first inclined filter and the second inclined filter are separated from the bottom of the inner barrel, so that the precipitated solids can be easily recycled through the pumping device.

[0023] In addition, the fermentation tank or inner tank may be further provided with a salinity sensor for measuring salinity, and a nozzle for adjusting salinity may be further provided on the top.

[0024] In addition, the solid resource recovery device includes: a submersible pump, which extends to the other upper side of the inner barrel and is used to pump a suspension containing solids; a sponge box body, which is used to filter the suspension containing solids received by the pump, remove primary fermentation and moisture, and discharge the solids after filtration; an operating screw, which passes through the sponge box body and operates to discharge the solids from which moisture has been removed; and a solid recovery barrel, which is connected and installed with the sponge box body, receives the solids moved from the operating screw, and discharges them in the form of secondary fermentation and dry powder.

[0025] The suspension containing solids is pumped from the solid resource recovery device, and the treated water from which the solids are filtered from the sponge box having a carrier and filtering functions is recirculated and discharged to the lower hot water tank.

[0026] The sponge box includes: a main shell, which is open on the upper side, has a accommodating space inside, and is formed by a treated water discharge pipe that discharges treated water to the lower side; a carrier filter, which is accommodated and installed on the inner side of the main shell, and is used to filter a suspension containing solids for primary fermentation and remove moisture; a porous barrel, which is installed on the inner side of the carrier filter to discharge treated water, and the operating screw is installed to penetrate the main shell, the carrier filter and the porous barrel.

[0027] In addition, the solid recovery barrel includes: a recovery barrel, the upper side of which is formed as an opening, and a floor inclined surface with a predetermined slope is formed on the floor for collecting solids; a filter membrane, which is arranged on the inner side of the recovery barrel, and is used for secondary fermentation and drying of microorganisms remaining in the solids; a sponge carrier, which is connected to the inner side of the recovery barrel and installed to serve as a microorganism carrier and an air channel; a solid discharge pipe, which is connected to the recovery barrel and the sponge carrier, and discharges the fermented and dried solid powder.

[0028] In order to achieve the above-mentioned purpose, the solid resource recovery method of the kitchen waste treatment device with a solid resource recovery device of the present invention comprises: a shell having an inlet formed thereon; an inner barrel, the inlet being communicated with the inner barrel; a food fermentation section embedded in the upper part of the inner barrel, stirring the food waste falling through the inlet while being biodegraded by microorganisms to ferment its liquid into a suspension; a pumping device for spraying the suspension containing solids falling to the bottom of the inner barrel back to the food fermentation section and circulating it; a filtering device for filtering the solids and suspensions dropped and stored from the food fermentation section for one or more times and purifying them into clear pure water; and a heating device connected to the bottom of the inner barrel for promoting liquid fermentation and decomposition by microorganisms; a solid resource recovery device installed on an upper side of the inner barrel for pumping the turbid water containing solids discharged from the food fermentation section through a carrier and a filtering function. A method for solid resource recovery using a kitchen waste treatment device having a solid resource recovery device capable of fermentation and drying includes: a step of stirring the inflowing kitchen waste while fermenting and decomposing it into a suspension containing solids using microorganisms and carrier balls; in the fermentation and decomposition step, a step of filtering the suspension containing solids flowing into the inner barrel through a porous sponge once or n times, and finally naturally discharging clear clean water; a step of pumping the suspension containing solids filtered through the porous sponge once or n times from the bottom of the inner barrel as a pumping device, and repeatedly recycling it in the food fermentation section; a step of pumping the suspension containing solids filtered through the porous sponge once or n times from the bottom of the inner barrel to another pumping device, and circulating it to the solid resource recovery device by bypassing it; a step of using the solid resource recovery device to store and collect fermented and dried solids through pumping, carrier and filtering functions.

[0029] Beneficial Effects According to the food waste treatment device using microorganisms of the present invention, the food waste is effectively biodegraded by culturing a carrier of microorganisms and a porous sponge, and liquid phase fermentation is performed, and then repeated recycling and multi-stage filtration processes are performed to discharge the food waste in the form of clear pure water, thereby simplifying the purification treatment of the sewage terminal treatment plant, greatly reducing the financial losses of government agencies, and sterilizing the food waste at the place where it is generated without moving it.

[0030] In addition, the turbid water containing solids discharged from the fermentation tank is pumped into the solid recovery bucket, and the treated water with filtered solids is circulated back to the lower hot water bucket from the sponge box with carrier and filtering functions, which not only saves energy for heating hot water, but also prevents waste of tap water by reusing the discharged water.

[0031] In addition, after the solids are fully fermented and dehydrated from the sponge box for a second time, they are discharged in the form of dry powder and used as fertilizer. Since they are in a dry powder state that has been fully fermented and dehydrated, they can be stored for a long time, making it convenient for users to use them when needed. The number of recycling times and the amount of recycling can be adjusted arbitrarily according to user needs to achieve adjustment of the recycling cycle.

[0032] In addition, a fermentation tank is formed by using a porous sponge inhabited by microorganisms, and carrier balls are stored at a predetermined height in the fermentation tank and stirred together with the food waste, thereby eliminating the stirring blind spot caused by the flow of the carrier balls and promoting the biodegradation of the food waste.

[0033] In addition, since the fermentation tank and the filtering device are made of porous sponges and are easy to replace, they also have an effective promotion effect of low-cost production of food waste treatment devices using microorganisms.

[0034] In addition, by repeatedly recycling and reusing hot water, electric energy is saved by hot water heating, fine solids are repeatedly filtered, thereby minimizing the outflow of fine solids, and the effluent water finally discharged is clearly purified treated water.

[0035] In addition, the solid recovery tank recycles and discharges the treated water with filtered solids from the sponge box with pumping, carrier and filtering functions to the lower hot water tank, which not only saves energy brought by hot water heating, but also prevents the waste of tap water by reusing the discharged water.

[0036] In addition, the present invention repeatedly recycles the suspension containing solids fermented from microbial liquid to the food fermentation section and performs a multi-stage filtration process, so that the solid outflow rate of the treated water discharged to the sewage pipe or sewer is significantly reduced, and only clear pure water is discharged, thereby preventing environmental pollution caused by the treatment of food waste.

[0037] In addition, the present invention circulates and discharges the treated water from which solids are filtered from the sponge box having pumping, carrier and filtering functions into the solid recovery barrel, thereby reducing the energy generated by heating hot water. By reusing the discharged water, waste of tap water can be prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figures 1 to 9 The present invention shows an embodiment of a food waste treatment device having a solid resource recovery device.

[0039] Figure 1 1 is an exemplary cross-sectional structural diagram showing a food waste treatment device having a solid resource recovery device according to the present invention.

[0040] Figure 2 is shown connected to Figure 1 A perspective view of the inner barrel of a fermentation tank.

[0041] Figure 3 It is shown from Figure 1 A stereogram of the stirring device extracted from .

[0042] Figure 4 It is shown Figure 1 Cross-sectional view of the stirring device in FIG.

[0043] Figure 5 It is shown from Figure 1 Magnified image of the suspension sprayed onto the interference plate.

[0044] Figure 6 yes Figure 1 A magnified view of the filter device in FIG.

[0045] Figure 7 It is shown Figure 1 Operation diagram of the check valve operation.

[0046] Figure 8 It is shown Figure 1 An example diagram of the operation of the filtering device.

[0047] Fig. 9 1 is an exemplary structural diagram showing a solid resource recovery device of a food waste treatment device having a solid resource recovery device according to the present invention.

[0048] Fig.10 The flowchart shows a solid resource recovery method using a food waste treatment device having a solid resource recovery device according to the present invention. DETAILED DESCRIPTION

[0049] The present invention can be variously modified and can have various embodiments, so specific embodiments will be shown in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, but should be understood to include all changes, equivalents or substitutes included in the thought and technical scope of the present invention.

[0050] The present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and the embodiments ensure that the disclosure of the present invention is complete and provide a complete scope of the invention to those having knowledge in the art.

[0051] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, when adding reference symbols to the components in each figure, it should be noted that the same components have the same symbols as much as possible, even if they are shown in different figures. In addition, when describing the present invention, if it is determined that the detailed description of the relevant known structure or function may obscure the main points of the present invention, its detailed description will be omitted.

[0052] Figures 1 to 9The present invention shows an embodiment of a food waste treatment device having a solid resource recovery device according to the present invention.

[0053] The present invention provides a food waste treatment device with a solid resource utilization device, which utilizes microorganisms and carrier balls to rapidly ferment and decompose food waste entering a food fermentation section into a suspension containing solids, and then filters the suspension once or more than n times through a porous sponge, and finally discharges clear clean water naturally. In addition, the food waste treatment device can use the suspension containing solids as fertilizer, and can utilize the fully fermented and dehydrated solids as resources.

[0054] refer to Figures 1 to 9 , the food waste purification device 100 with a solid resource recovery device according to the present invention comprises: a shell 10, on which an inlet 11 is formed; an inner barrel 20, the inlet 11 being communicated with the inner barrel; a food fermentation section 30, which is embedded in the upper part of the inner barrel 20, and while stirring the food waste falling through the inlet 11, is biodegraded by microorganisms to ferment its liquid into a suspension; a pumping device 40, which is used to spray the suspension containing solids falling to the bottom of the inner barrel 20 to the food fermentation section 30 and circulate it; a filtering device 50, which is used to filter the solids and suspensions falling from the food fermentation section 30 and stored for one or more times, and purify them into clear pure water; and a heating device 60, which is connected to the bottom of the inner barrel 20 and is used to promote liquid fermentation and decomposition of microorganisms; a solid resource recovery device 70, which is installed on the upper part of one side of the inner barrel 20, and is used to pump, carry out carrier and filtering functions to ferment and dry the turbid water containing solids discharged from the food fermentation section 30.

[0055] The housing 10 may be formed to not only maintain the heat preservation of the inner tub 20 but also have the function of preventing the leakage of bad odor and the function of shielding mechanical noise.

[0056] Furthermore, as an embodiment, the housing 10 is of SUS series, but an insulating material (not shown) such as a glass wall may be inserted between two metal plates for sound insulation and heat preservation.

[0057] In addition, the housing 10 is formed with an inlet 11 into which food waste can be inserted, and the inlet 11 may be configured to communicate with the inner tub 20 .

[0058] In addition, the inner tub 20 may be made of the same material as the housing 10 , but preferably, its size is such that the drain pipe 122 and the spray pipe 42 can be installed in the space between the housings 10 .

[0059] The food fermentation section 30 is built in the upper part of the inner barrel 20 and has the function of stirring the food waste falling through the inlet 11 so that the food waste is biodegraded by microorganisms and the liquid is fermented into a suspension.

[0060] The food fermentation unit 30 includes a fermentation tank 32 , a support frame 31 , a stirring device 33 and a carrier ball 34 .

[0061] The fermentation tank 32 is supported by the support frame 31, provides a habitat for microorganisms, and has the function of filtering liquid to ferment into a suspension.

[0062] The upper portion of the fermentation tank 32 is configured to be able to store in an open manner the food waste dropped through the inlet 11. At this time, the fermentation tank 32 is made of a porous sponge, and thus can have additional functions of sound insulation and heat insulation.

[0063] Preferably, the four sides of the inner barrel are composed of a sponge box, and the sponge is porous and can accommodate microorganisms.

[0064] In addition, the fermentation tank 32 is made of a foamed body of a synthetic resin series such as PU and PP in addition to the porous sponge.

[0065] In addition, the support frame 31 is used to support the fermentation tank 32 , and preferably, to fix the structure of the inner barrel 20 .

[0066] At the same time, if Figure 2 As shown, the fermentation tank 32 is made of porous sponge, and a frame 321 for supporting the porous sponge is further connected to the four sides and the bottom of the fermentation tank 32. At this time, the grid 322 is combined with the frame 321 located on the bottom of the fermentation tank 32 to prevent the fermentation tank 32 from sagging due to the food waste.

[0067] Furthermore, the left frame frame 321 to which the injection pipe 42 of the pumping device 40 described later is connected may also be configured to further ensure the supporting force by combining the grid frame 322 therein.

[0068] The carrier balls 34 are stored at a predetermined height in the fermentation tank 32 and can be configured in different sizes so that the food waste can be dispersed throughout the fermentation tank 32, while eliminating the mixing blind area of ​​the food waste through flow and refining the food waste.

[0069] These carrier spheres 34 have different sizes ranging from 5 to 10 mm and may be provided by a porous material having an irregular surface.

[0070] Meanwhile, the fermentation tank 32 and the carrier ball 34 composed of the porous sponge are a medium (medis) providing an attachment surface for promoting the proliferation and growth of microorganisms, wherein organic matter or nutrients are attached to the biofilm of the microorganisms on the carrier and are oxidized, decomposed or consumed by the microorganisms.

[0071] Therefore, the material of the carrier ball 34 can be PP, ceramics, wood, activated carbon, charcoal, etc., which are specially used for liquid fermentation and decomposition of food waste. The carrier ball 34 is a porous material, which provides a space for microorganisms to live, so when it is stored in the fermentation tank 32, the microbial fermentation effect of the food waste can be increased.

[0072] In addition, by positioning the food waste in the gaps formed between the carrier balls 34 , the food waste can be evenly dispersed in the entire fermentation tank 32 , and the stirring blind spots can be eliminated by flowing through the stirring device 33 .

[0073] In addition, the stirring device 33 is installed inside the fermentation tank 32 to make the carrier balls 34 flow while stirring the food waste.

[0074] like Figure 3 As shown, the stirring device 33 includes: a plurality of stirring shafts 331 arranged at predetermined intervals in the fermentation tank; a first stirring blade 332, which is connected to a plurality of stirring platforms 334 in the left and right radial directions of each stirring shaft 331; and a second stirring blade 333, which is connected to a plurality of stirring platforms 334 in the upper and lower radial directions of each stirring shaft 331. At this time, the rotation radius of the first stirring blade 332 is relatively larger than the rotation radius of the second stirring blade 333, thereby minimizing the stirring blind area, so that the food waste in the entire fermentation tank 32 is uniformly stirred.

[0075] In addition, the height and interval of each of the stirring shafts 331 are configured to correspond to the rotation radius, so that the first stirring blade 332 having a large rotation radius does not contact the bottom surface of the fermentation tank 32 .

[0076] At the same time, reference Figure 4 Each of the stirring shafts 331 is connected to the outside of the housing 10 in an exposed manner, a sprocket 331a is connected to the exposed stirring shaft 331, and each of the sprockets 331a can be configured to save energy by meshing with a chain 336 or a belt rotated by a driving device 335 and rotating simultaneously.

[0077] At this time, the driving device 335 may be a motor, and the stirring function is fully performed through the forward / reverse rotation and the stationary time of the motor, so that the liquid fermentation and decomposition of the microorganisms can be easily completed.

[0078] The pumping device 40 is used to spray the suspension containing solids that falls to the bottom of the inner barrel 20 to the food fermentation part 30 and circulate it.

[0079] The pumping device 40 includes a submersible pump 41 installed in the suspension stored in the inner barrel 20, and a spray pipe 421 connected to the submersible pump 41 and the nozzle 421 is exposed to the inside of the fermentation tank 32. At this time, the inner barrel 20 is provided with a water level sensor 21 for controlling whether the submersible pump 41 is running.

[0080] At this time, if Figure 5 As shown, a plurality of nozzles 421 are radially arranged at the end of the spray pipe 42, and even if one nozzle 421 is blocked, another nozzle 421 can be configured to spray solids and suspension. At this time, the inner barrel 20 further includes an interference plate 24, which makes the suspension containing solids sprayed from the nozzle 421 collide with the ceiling and scatter it.

[0081] At this time, the interference plate 24 is made of SUS304 material, by which the solids hitting the interference plate 24 are slightly decomposed, and the suspension is dispersed to the surroundings and widely sprayed.

[0082] Therefore, the solid and the suspension pumped by the pumping device 40 can be supplied to the entire fermentation tank 32 in a balanced manner.

[0083] In addition, the solids and suspension sprayed and reinjected from the nozzles 421 are used for a washing function and re-fermentation of unfermented solids.

[0084] At this time, the turbid liquid discharged from the fermentation tank is re-processed with unfermented micro-solids through the repeated recycling function, thereby improving the solid fermentation efficiency. By reusing the hot water of the washing water, tap water is saved, and the energy-saving effect required for hot water heating is worth looking forward to.

[0085] Furthermore, since the reintroduced solid and suspension are in a hot water state heated by the heating device 60, the fermentation efficiency can be further maximized.

[0086] Meanwhile, a tap water nozzle 13 for adjusting salinity may be installed on the ceiling of the inner tub 20 .

[0087] When the salinity of the suspension increases due to poor biodegradation and fermentation effects of microorganisms on food waste, the tap water nozzle 13 can be configured to adjust the salinity by supplying tap water from the tap water nozzle 13. To this end, a salinity sensor 23 for measuring the salinity of the suspension can also be provided on the bottom surface of the fermentation tank 32 or the inner barrel 20.

[0088] The filtering device 50 is used to filter the solid and the suspended liquid dropped from the food fermentation part 30 and stored therein once or n times or more, and purify them into clear pure water.

[0089] refer to Figures 6 to 8The filtering device 50 can be composed of a first inclined filter 51, a second inclined filter 52 and a cover filter 53. As a porous sponge filter, the overlapping sponge filter structure of the first inclined filter 51, the second inclined filter 52 and the cover filter 53 can effectively improve the solid-liquidation function by enhancing the carrier function of accommodating microorganisms.

[0090] In addition, preferably, one side of the first inclined filter 51 is fixed at a position higher than the outlet 12 so that the solids and suspensions falling from the food fermentation section 30 can be guided to the bottom of the inner barrel 20, and the other side is fixed close to the bottom of the inner barrel and arranged obliquely in the form of a right triangle slope.

[0091] At this time, the function and effect of the first inclined filter 51 is to filter the solids in the turbid liquid passing through the perforated plate, send the clarified treated water downward, and send the solids in the direction of the pumping device.

[0092] In addition, the second inclined filter 52 has one or n structures perpendicular to the bottom surface of the first inclined filter 51 .

[0093] At this time, since the second inclined filter 52 is also arranged obliquely with respect to the inclination of the first inclined filter 51 , part of the suspension and solid filtered and dropped from the first inclined filter 51 are configured to be able to improve filtering efficiency by contact.

[0094] In addition, the second inclined filter 52 can filter solids and suspended liquids according to the slope and the height of the water level, and can filter solids and suspended liquids in the left and right directions by one or more arrangements, thereby providing a method in which the outflow rate of solids discharged through a sewage pipe or a sewage pipe is significantly reduced and only clear pure water is discharged.

[0095] At this time, the function and effect of the first inclined filter 51 is a porous sponge filter, which acts as a microbial carrier, thereby improving the effect of blocking solids and the effect of the inhabiting microorganisms decomposing tiny solids.

[0096] At the same time, the lower ends of the first inclined filter 51 and the second inclined filter 52 are separated from the bottom surface of the inner barrel 20, so that larger solid particles deposited on the bottom surface of the inner barrel 20 can be effectively moved to the submersible pump.

[0097] Therefore, the solids settled on the bottom of the inner barrel can be recycled to the fermentation tank 32 through the pumping device 40 and re-fermented.

[0098] In addition, the cover filter 53 has a structure that surrounds an inclined surface inclined at the same angle as the first inclined filter 51 so as to surround the outlet 12 in a triangular structure.

[0099] The cover filter 53 is made of a porous sponge connected to a frame (not shown), and its upper surface has the same inclined edge as the first inclined filter 51 so that solids or suspensions falling from the fermentation tank 32 do not flow directly into the outlet 12.

[0100] In addition, since the area of ​​the cover filter 53 is relatively small and the lower surface is arranged in an inverted triangle with the upper surface, some suspension is slightly introduced through the upper surface of the cover filter 53, and the inflowing suspension is not directly discharged from the outlet 12, but is filtered out.

[0101] Therefore, since the suspension is discharged to the outlet 12 only at a water level of the inner tub 20 sufficient to accommodate the cover filter 53, ultimately, the suspension and the solids undergo a multi-stage filtering process and only clear pure water can be discharged.

[0102] Meanwhile, the heating device 60 is a structure combined with the bottom surface of the inner barrel 20 to promote liquid fermentation of microorganisms.

[0103] At this time, the inner tub 20 may also be configured to be provided with a temperature sensor 23 for measuring the water temperature.

[0104] At this time, the heating device 60 may be installed in plurality according to the size of the inner tub 20 , and a planar heating body having relatively low heat transfer efficiency and power consumption compared to a coil type may be used.

[0105] Meanwhile, the inner tub 20 is formed with an outlet 12 , and the outlet 12 is provided with a check valve 121 , so that an integer of 1 or n times of filtration is naturally discharged through the cover filter 53 above a predetermined water level.

[0106] The check valve 121 formed at the outlet 12 is made of a corrosion-resistant lightweight material, such as Figure 7 As shown, it opens and drains water under the push of water pressure and automatically closes after the drainage is completed. In addition to preventing heat loss, it can also provide the effect of blocking the odor from flowing back to the fermentation tank 32 through the drainage pipe 122 connected to the sewage pipe.

[0107] The solid resource recovery device 70 is installed on the upper part of one side of the inner barrel 20, and has the functions of pumping, carrying and filtering the suspension containing solids discharged from the food fermentation part 30. As a device structure with fermentation and drying functions, the solid resource recovery device 70 includes: a pump 710, which extends to the other upper side of the inner barrel 20, and is used to pump the suspension containing solids; a sponge box 720, which is used to filter the suspension containing solids received by the pump 710, remove primary fermentation and moisture, and then discharge the solids; an operating screw 730, which passes through the sponge box 720 and operates to discharge the solids from which moisture has been removed; and a solid recovery barrel 740, which is connected and installed with the sponge box 720, receives the solids moved from the operating screw 730, and discharges them in the form of secondary fermentation and dry powder.

[0108] At this time, the solid resource recovery device 70 can be configured to circulate and discharge the treated water from which the solids are filtered from the sponge box having pumping, carrier and filtering functions to the lower hot water tank.

[0109] In addition, the pump 710 is composed of a spray pipe 711 that passes through the inner barrel and is connected to the upper side of the sponge box 720 to spray the suspension containing solids.

[0110] In addition, the sponge box 720 includes: a main shell 721, which is opened on the upper side and has a accommodating space 721a inside, and is formed by a treated water discharge pipe 721b that discharges treated water to the lower side; a carrier filter 723, which is accommodated and installed on the inner side of the main shell 721, and is used to filter a suspension containing solids for primary fermentation and remove moisture; a porous barrel 725, which is installed on the inner side of the carrier filter 723 to discharge treated water.

[0111] In addition, the carrier filter 723 and the porous barrel 725 are provided in a conical shape whose bottom surface is inclined toward the bottom center, and can be formed to induce a drainage flow of the suspension containing solids.

[0112] In addition, the porous barrel 725 is a cylinder made of stainless steel material, and a plurality of through holes 725a may be formed on the periphery and bottom of the cylinder to guide drainage and airflow.

[0113] In addition, the operating screw 730 may be installed in the form of a screw driven by a motor M to move the dehydrated solid in a screw manner. At this time, the operating screw 730 is installed to penetrate the main housing 721, the carrier filter 723 and the porous barrel 725, so that the dehydrated solid is quickly transported to the solid recovery barrel 740 through the screw structure.

[0114] In addition, the solid recovery barrel 740 receives the solids moved from the operating screw 730 and discharges them in the form of secondary fermentation and dry powder. The solid recovery barrel 740 includes: a recovery barrel 741, the upper side of which is formed as an opening, and a floor inclined surface 741a with a predetermined slope is formed on the floor for collecting solids; a filter membrane 743, which is arranged on the inner side of the recovery barrel 741, and is used for secondary fermentation and drying of microorganisms remaining in the solids; a sponge carrier 745, which is connected to the inner side of the recovery barrel 741 and is installed to serve as a microorganism carrier and an air channel; a solid discharge pipe 747, which passes through the recovery barrel 741 and the sponge carrier 745 and discharges the fermented and dried solid powder.

[0115] At this time, the dry powdered solid particles are captured to the lower side by the floor slope 741a of the recovery barrel 741 to fully induce fermentation and discharge, and when stored, the air flow can be guided to the microorganisms remaining on the filter membrane through the sponge carrier, thereby quickly inducing fermentation and drying functions.

[0116] In this way, the turbid water containing solids discharged from the food fermentation section is pumped into the solid recovery barrel, and the treated water with filtered solids is recycled from the sponge box with carrier and filtering functions to the lower hot water barrel, which not only reduces the energy brought by heating hot water, but also prevents the waste of tap water by reusing the discharged water.

[0117] In addition, after the solids are fully fermented and dehydrated from the sponge box for a second time, they are discharged in the form of dry powder for use as fertilizer. Since they are in a dry powder state that has been fully fermented and dehydrated, they can be stored for a long time, making it convenient for users to use them when needed. The number of recycling times and the amount of recycling can be adjusted arbitrarily according to user needs, and the recycling cycle can also be adjusted.

[0118] At the same time, a blower 80 for guiding air flow is arranged inside the shell 10 of the present invention, and vents 81 with sponge filters are arranged at different positions on the shell 10. According to the air pressure inside the processing device and the air environment outside the vents, when air flows in from the vents on one side, the vents on the other side become air exhaust channels, so that the air flows smoothly in the entire space between the inside of the processing device and the shell, and oxygen can be supplied to the outside when air flows in.

[0119] This provides oxygen for aerobic microorganisms living in the sponge box inside the solid resource recovery device, improving their reproduction and fermentation capabilities. The vents on the other side discharge the water vapor generated during solid fermentation and drying to the outside, and can also remove moisture from the processor.

[0120] At the same time, the present invention can provide a solid resource recovery method using the above-mentioned kitchen waste treatment device.

[0121]

Microbial fermentation decomposition steps

[0122] At this time, the food waste is dispersed throughout the fermentation tank by a stirring device installed in the fermentation tank composed of porous sponges, while the carrier balls are used to make the microorganisms inhabit and the liquid fermentation suspension fall.

[0123]

Filtered water discharge steps

[0124] In this case, the filtering device includes: a first inclined filter, one side of which is higher than the outlet and is arranged with an inclined surface so as to guide the solids and suspensions falling from the food fermentation part to the bottom surface of the inner barrel; one or more second inclined filters, which are orthogonally combined with the bottom surface of the first inclined filter; the solids and suspensions fall through the cover filter that wraps the outlet with an inclined surface inclined at the same angle as the first inclined filter, thereby allowing the microorganisms to proliferate in the filter, and the precipitated solids that fall to the bottom of the inner barrel are connected to the recycling process through a pumping device to perform a multi-step filtering process, and the treated water discharged into the sewage pipe or sewer significantly reduces the outflow rate of solids, and only clear clean water is discharged.

[0125]

Recycling steps of fermentation, decomposition and filtration

[0126] At this time, through the submersible pump installed at the bottom of the inner barrel, the nozzle is exposed to the inside of the fermenter through the nozzle pipe connected to the inside of the fermenter, and the suspension containing solids sprayed from the ceiling to the nozzle is sprayed from the nozzle into the entire inner barrel through collision, affected by the interference plate, widely diffused and recycled.

[0127] [Steps to bypass using solid resource recovery equipment] The step S400 may be configured to pump the suspension containing solids filtered once or n times through the porous sponge from the bottom of the inner barrel to another pumping device, and circulate it to bypass the solid resource recovery device.

[0128] At this time, the turbid water containing solids discharged from the fermentation tank is pumped into the solid recovery bucket, and the treated water with filtered solids is circulated from the sponge box with carrier and filtering functions and discharged back to the lower hot water bucket, which not only saves energy from heating hot water, but also prevents tap water waste by reusing the discharged water.

[0129]

Steps for storing and collecting solids

[0130] At this time, the solids are fully fermented and dehydrated from the sponge box for a second time, and then discharged in the form of dry powder for use as fertilizer. Since the dry powder is in a state of full fermentation and dehydration, it can be stored for a long time, which is convenient for users to use when needed. The number of recycling times and the amount of recycling can be adjusted arbitrarily according to user needs, thereby realizing the adjustment of the recycling cycle.

[0131] Preferably, by introducing external dry air from the vents and mixing and blowing the internal heated air that has passed through the heating device into the sponge filter by a blower that induces air flow, thereby providing oxygen to the microorganisms, the dry air can play a role in drying the moisture in the device, thereby removing odors. In addition, the air flow supply helps to activate the reproduction and growth capabilities of aerobic microorganisms that require oxygen. Through this repeated hot water recycling and reuse, hot water saves electrical energy by heating, and repeatedly filters fine solids, thereby minimizing the outflow of fine solids, and the final discharged wastewater is clear, purified treated water, and at the same time, the active microorganisms in the solids can be used by releasing fertilizers.

[0132] As described above, through the food waste treatment device with a solid resource recovery device of the present invention, the food waste is quickly fermented and decomposed into a suspension containing solids by using microorganisms and carrier balls, and then filtered once or multiple times by a porous sponge to eventually allow clear pure water to be naturally discharged. The suspension containing solids is repeatedly recycled and subjected to a multi-stage filtration process, which significantly reduces the solid outflow rate of the treated water discharged into the sewage pipe or sewer, and only clear pure water is discharged. A solid resource recovery step is provided and used as a fertilizer, and the solids that are fully fermented and dehydrated can be recycled.

[0133] As described above, the present invention has been shown and described through preferred embodiments, but the present invention is not limited to the above embodiments, and within the scope of the spirit of the present invention, ordinary technicians in the technical field to which the present invention belongs can make various modifications and changes within the scope of the technical idea of ​​the present invention and the patent claims described below.

Claims

1. A kitchen waste treatment device with a solid resource recovery device, characterized in that: include: a housing having an inlet formed therein; an inner barrel, wherein the inlet is communicated with the inner barrel; a food fermentation section embedded in the upper part of the inner barrel, stirring the food waste falling through the inlet while being biodegraded by microorganisms to ferment its liquid into a suspension; A pumping device, used to spray the suspension containing solids that falls to the bottom of the inner barrel to the food fermentation part and circulate it; A filtering device for filtering the solids and suspensions dropped from the food fermentation unit and stored therein one or more times and purifying them into clear pure water; as well as A heating device connected to the bottom surface of the inner barrel for promoting liquid fermentation and decomposition of microorganisms; The solid resource recovery device is installed on the upper part of one side of the inner barrel, and is used to pump, carry out carrier and filter functions to ferment and dry the turbid water containing solids discharged from the food fermentation part. The solid resource recovery device comprises: a submersible pump extending to the other upper side of the inner barrel for pumping a suspension containing solids; The sponge box is used to filter the suspension containing solids received by the submersible pump, perform a fermentation and remove water, and discharge the solids after filtering; an operating screw that passes through the sponge box and operates to discharge the dehydrated solids; and The solid recovery barrel is connected and installed with the sponge box, receives the solids moved from the operating screw, and discharges them in the form of secondary fermentation and dry powder. The suspension containing solids filtered once or n times by the porous sponge is pumped from the bottom of the inner barrel to another pumping device to circulate bypass to the solid resource recovery device.

2. The kitchen waste treatment device with a solid resource recovery device according to claim 1, characterized in that: The filtering device comprises: The first inclined filter has one side fixed at a position higher than the outlet so as to guide the solid and suspension falling from the food fermentation unit to the bottom surface of the inner barrel, and the other side fixed close to the bottom surface of the inner barrel and arranged obliquely in the form of a right triangle slope. A second inclined filter, one or n second inclined filters are perpendicular to the bottom surface of the first inclined filter; and a cover filter that surrounds the inclined slope at the same angle as the first inclined filter so as to surround the outlet in a triangular structure, The bottoms of the first inclined filter and the second inclined filter are separated from the bottom surface of the inner barrel so that the precipitated solids can be easily recirculated by a pumping device. The second inclined filter is configured to be arranged obliquely by the inclination of the first inclined filter, so that a portion of the suspension filtered and dropped from the first inclined filter contacts with solids, thereby being able to improve filtering efficiency.

3. The kitchen waste treatment device with a solid resource recovery device according to claim 1, characterized in that: The suspension containing solids is pumped from the solid resource recovery device, and the treated water from which the solids are filtered from the sponge box having a carrier and filtering functions is recirculated and discharged to the lower hot water tank.

4. The kitchen waste treatment device with a solid resource recovery device according to claim 1, characterized in that: The sponge box comprises: A main housing, the upper side of which is opened, has a storage space inside, and is formed by a treated water discharge pipe for discharging treated water to the lower side; a carrier filter, which is housed and mounted inside the main housing and is used to filter a suspension containing solids for primary fermentation and to remove moisture; A porous barrel installed inside the carrier filter to discharge the treated water, The operating screw is installed to penetrate the main housing, the carrier filter and the porous barrel.

5. The kitchen waste treatment device with a solid resource recovery device according to claim 1, characterized in that: The solid recovery barrel comprises: a recovery bucket, the upper side of which is formed as an opening, and an inclined surface with a predetermined slope is formed on the floor for collecting solids; A filter membrane is arranged inside the recovery barrel and is used for secondary fermentation and drying of microorganisms remaining in the solid; a sponge carrier connected to the inner side of the recovery barrel and installed to serve as a microorganism carrier and an air passage; The solid discharge pipe is connected with the recovery barrel and the sponge carrier, and discharges the fermented and dried solid powder.

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