KR100799332B1 - Food waste recycling system and feed manufacturing method using thereof - Google Patents

Abstract

An automated food waste recycling system and a process for manufacturing feed using the system are provided to recycle the food waste with reducing odor and waste water at the same time, to recycle bio-gas for energy resources from the waste, and to save labor and a maintenance cost. An automated food waste recycling system comprises: a methane boiler(210); an input hopper(110); a selector for coarse large foreign substance(120); a heat drying sterilizer(140) which heats and dries the material for sterilization; dryer's cyclone(145); a plastic remover(150); cooling selector for foreign substance(170); a condenser(220) for separating steam by cooling from steam mixture containing concentrated odor generated in the drying process at heat drying sterilizer(140); a tank(230) for storing condensed liquid transferred from those generated at steam-header(215) of methane boiler(210) and from those generated from the condenser(220); a tank(240) for storing the leachate transferred from those generated from tank(230) for storing condensed liquid and from those generated from input hopper(110); an undercurrent vat for transiently storing the leachate from tank(240) for storing the leachate; acid-ferment vat; digestion vat; a desulferization vat; a gas storing vat; undercurrent vat for the digested liquid; compress and floating vat which compresses the digested liquid from the undercurrent vat by means of compress pump, and sets the untreated floating material afloat while precipitating the recycled water at the bottom; connect transfer vat for storing the recycled water from compress and floating vat; and a dehydrator for drying floated substrate from compress and floating vat. A method manufacturing for feed from food waste by means of the automated system comprises steps of: feeding food waste into input hopper(110); primarily selecting foreign substance in the waste through selector for coarse large foreign substance(120); compressing the food waste by compressor(130); heating the waste for sterilization and drying the moisture in the waste by heat drying sterilizer(140); removing dust in the food waste by dryer's cyclone(145); removing plastic in the food waste by plastic remover(150); and cooling the waste and separating foreign substance in the waste through secondary selection by means of cooling selector for foreign substance(170): condensing and separating steam by cooling the steam mixture containing concentrated odor generated from sterilization and drying in heat drying sterilizer(140) by means of condenser(220); storing the condensed liquid by transferring the condensed liquid generated from steam-header(215) of methane boiler(210) and the condensed liquid generated in condenser(220); storing the leachate by transferring the condensed liquid in tank(230) and the leachate generated from input hopper(110) to a leachate tank(240); and purifying the leachate in the leachate tank(240).

Description

Food waste recycling system and feed manufacturing method using same

1 is an overall configuration diagram of a food waste recycling apparatus except for a device for treating leachate (wastewater).

2 is an overall configuration diagram of an apparatus for treating leachate (wastewater).

Figure 3 is a specific embodiment of the coarse foreign matter sorter.

Figure 4 is a specific embodiment of the heat sterilization dryer.

5 is a specific embodiment of a digester for treating leachate (wastewater).

6 schematically shows a plan view of a biofilter.

7 shows a waste water treatment plant material balance map.

<Description of the symbols for the main parts of the drawings>

110: hopper

120: coarse foreign matter sorter

130: press

140: Heat sterilization dryer

141: heating sterilization part

142: heating drying part

145: dryer cyclone

150: vinyl remover

160: Middle Hopper

170: Foreign material cooling sorter

180: hammer mill

190: feed hopper

210: methane boiler

215: Steam header

220: condenser

230: condensate tank

235: cooling tower

240: leachate tank

250: Deodorization tank

310: storage tank

320: acid fermentation tank

325: acid fermentation tank mixing pump

330: fire hydrant

331: digestion tank injection pump

332: Digestion tank circulation pump

333: desulfurization tank

334: gas holder

335: surplus gas burning device (flare stack)

340: digestive storage tank

350: Pressurization

355: pressure pump

360: linked processing transfer tank

370: dehydrator

375: Dehydrated Cake Storage

380: biofilter

Field of technology

The present invention relates to a device and method for treating food waste by feed, means for effectively treating the leachate (wastewater) and odor generated by incidental in the feed process by recycling as an energy source of methane boilers to minimize maintenance costs Is presented together.

That is, the present invention provides a facility capable of simultaneously feeding and wastewater treatment (including odor) through processes such as pressing various food wastes, heating sterilization drying, and selecting coarse foreign substances. will be.

Prior art

In general, with the development of industry, household waste is rapidly increasing due to income growth, changes in consumption tendency, and development of distribution structure.

The disposal options for household wastes include landfills, landfills, incineration, and reprocessing as new resources.

In the case of landfill treatment, there were many problems of public health such as geological pollution, harmful gas generation, and water pollution after disposal, followed by economic burden to secure landfill.In case of incineration treatment, incineration treatment There is a problem that the air pollution occurs when the burden of the expense and incineration, and there is a problem that is limited to the type of waste being treated.

Recycling treatment seems to be the best treatment method, but it is determined whether it can be recycled depending on its effectiveness. In other words, whether or not economic feasibility is important in the treatment cost for recycling, secondary environmental pollution is important during the recycling process, and the recycling treatment method is selected through a comprehensive analysis of the quality satisfaction of the final product by recycling. .

Determination of the treatment method for the above-mentioned municipal waste can be selected according to the physical properties of the waste.

In particular, most of the food waste generated as waste in the general diet is organic waste, which causes serious environmental pollution such as water pollution and odor caused by decay when it is landfilled. It was processed by the processing method.

However, the landfill treatment method has many problems due to various types of uneconomical, unsanitary, and non-environmental treatment methods, such as securing landfills, changing soils after landfilling, gas generation due to decay of organic matter, and resulting air and water pollution. There was this.

Therefore, in order to solve the problems of the landfill treatment method has been proposed to recycle the food waste treatment, the existing food waste treatment device is made of a semi-automatic, when the existing food waste treatment to remove foreign substances by manual operation before input And artificially mixed with moisture control and fermentation in the process, the cost of additives is high and manpower costs are high, so it is economical, and it is not able to deal with the odor generated during the resource treatment process. It became.

The object of the present invention created to solve the above problems is as follows.

First, it is an object of the present invention to provide a means to effectively treat odors and waste water generated during food waste treatment as well as recycling food resources by feeding food waste.

Secondly, it is another object of the present invention to provide a means for recycling (bio) gas generated by incidental treatment of wastewater generated during food waste treatment as an energy source.

Third, it is another object of the present invention to secure a more complete treatment and reliability by proceeding the odor treatment in two steps.

Fourth, another object of the present invention is to provide a means for reducing labor and maintenance costs to an automated facility.

The configuration of the present invention created to achieve the above object is as follows.

The present invention relates to an apparatus for treating and recycling food waste, comprising: a methane boiler 210 for supplying steam; An input hopper 110 into which food waste is input and stored; Coarse foreign matter sorter 120 for first separating the separated foreign matter contained in food waste ; Heat sterilization dryer (140) for sterilizing and drying food waste using steam; Vinyl remover 150 for removing the vinyl contained in the food waste; Dryer cyclone 145 to remove dust contained in food waste; Foreign material cooling sorter 170 for cooling and drying the dried food waste and separates and separates the foreign matter contained in the food waste secondary; A condenser (220) for condensing and separating only steam by cooling steam containing a high concentration of malodorous components generated during sterilization and drying of the heat sterilization dryer (140); A condensate tank 230 for receiving and storing the condensed water generated by the steam header 215 of the methane boiler 210 and the condensed water generated by the condenser 220; A leachate tank 240 for receiving and storing the condensate of the condensate tank 230 and the leachate generated from the input hopper 110; A storage tank 310 for temporarily storing the leachate supplied from the leachate tank 240; An acid fermentation tank 320 for acid fermenting the leachate supplied from the storage tank 310 for a predetermined time; Digestion tank 330 for reacting the leachate supplied from the acid fermentation tank 320 with anaerobic microorganisms; Desulfurization tank 333 for cleaning the biogas produced in the digester 330 to extract methane of good quality, gas storage tank 334 for storing the good methane extracted from the desulfurization tank 333, the digester 330 Digestive fluid storage tank 310 for temporarily storing the digestive fluid generated in the; A pressurized floatation tank 350 for pressurizing the extinguishing liquid supplied from the extinguishing liquid storage tank 310 with a pressurized pump 355 to float the untreated floating material upward and settling the supernatant water downward; A linked processing transfer tank 360 for temporarily storing the supernatant water supplied from the pressurization tank 350; And a dehydrator 370 for removing moisture of the suspended solids supplied from the pressure relief tank 350.

In addition, the present invention is a food waste input step to the input hopper 110; A first coarse foreign material selection step of first separating and separating foreign matters contained in food waste in the coarse foreign material selector 120; A pressing step of pressing the food waste using the pressing machine 130; Sterilization drying step of heating and drying the moisture contained in the heat sterilization and food waste using the heat sterilization dryer (140); A dust removal step of removing dust included in food waste using a dryer cyclone 145; A vinyl removing step of removing the vinyl included in the food waste using the vinyl remover 150; And a foreign material cooling sorting step of cooling the food waste using the foreign matter cooling sorter 170 and separating and separating the foreign matter contained in the food waste secondarily. In parallel with the above steps, the condenser 220 A condensation step of condensing and separating only steam by cooling steam containing a high concentration of malodorous components generated during the sterilization and drying process of the heat sterilization dryer by using; A condensate storage step of receiving condensate generated from the steam header 215 of the methane boiler 210 and condensate generated from the condenser 220 and storing the condensate in the condensate tank 230; A leachate storage step of transferring the condensate from the condensate tank 230 and the leachate generated from the input hopper 110 to the leachate tank 240 and storing the leachate; And a leachate purification step of purifying the leachate of the leachate tank 240.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall configuration diagram of a food waste recycling apparatus except for a device for treating leachate (wastewater).

The input hopper 110 is a place where food waste is first put and temporarily stored, and the leachate generated in the stored state is transferred to the leachate tank 240.

3 is a block diagram of a coarse foreign material selector 120 for crushing and selecting a foreign material having a predetermined size as a device for selecting a foreign material primarily.

Coarse foreign matter sorter 120 is a device for sorting, crushing and shredding the food waste discharged from the processing machine, such as the input hopper 110, the transfer conveyor. The structure consists of a large rotating roller, top screw, bottom screw, U-shaped case, the roller and the top screw and the bottom screw rotates between the food waste (dry goods). At this time, the foreign material is sorted out by the gap between the roller and the upper screw, and crushing and breaking occurs by the blade attached to the upper screw, and the dry matter is transferred by the pushing force of the lower screw, and the discharge of food waste (dry matter) is Appropriate amount is transported and discharged according to the pitch, rotation speed, and size of the screw to crush food waste of a certain size or more included in the food waste in an appropriate amount, and the foreign matter is sorted and separated.

In order to reduce the load and reduce energy costs during heat sterilization and drying of the crushed food waste while passing through the coarse foreign material selector 120, the food waste having a moisture content of 85% or more of the water content in the compressing machine 130 in the compressing machine 130 As a facility for compressing and dehydrating to less than or equal to%, the leachate generated in this process is transferred to the leachate tank 240.

4 is a block diagram of a heat sterilization dryer 140 as a device for sterilizing and drying food waste.

Heat sterilization dryer 140 is divided into a heat sterilization unit 141 and a heat drying unit 142, using a steam (steam) supplied through the steam header 215 of the methane boiler 210 in the compactor 130 Food waste dehydrated to 75% or less of moisture content is transferred to the heat sterilization unit 141 for fine grinding and sterilization at 100 ° C. for 45 minutes by steam indirect heating, and for making feed and compost. The screw rotating shaft is divided into the rotating shaft part and the fuselage part to which steam jacket is attached. The screw rotating shaft which quantitatively transports food waste in the fuselage is arranged with screw conveyor type screws at regular pitch intervals. It rotates between the heated food waste (dry matter). At this time, food waste (dry matter) is heated and hydrolyzed and sterilized by heat energy emitted by condensation of steam inside the steam jacket of the fuselage. The sterilized food waste (dry matter) is discharged at an appropriate feed rate according to the screw rotation of the screw conveyor type.

 In addition, a facility for drying moisture by indirect heating of steam supplied through the steam header 215 of the methane boiler 210 is transferred to the heating and drying unit 142, which is a secondary facility at the bottom. The structure is divided into a rotating disk portion and a body portion to which the steam jacket is attached, and the rotating hollow shaft where steam enters is arranged with disks of the jacket structure at regular intervals, and they are heated by steam to prevent food waste (blood). Rotating between the building). At this time, food waste (dry matter) is heated by the heat energy emitted by condensation of the steam inside the disk, and retained water is evaporated. The dehydrated food waste (dry matter) is discharged at an appropriate feed rate as the disk rotates. In order to increase the drying efficiency of the food waste put into the cylindrical horizontal structure, the disk is attached to the rotating hollow shaft to supply steam, which makes the most of the heat transfer area. Heat-dry to the temperature of 100 degreeC.

Dryer cyclone 145 is a device for removing dust generated during the sterilization drying process of food waste, it removes the dust going up to the duct by the blower. Dry gas cyclone 145 is composed of a shell shell (SHELL) and a rotary valve (ROTARY VALVE) and the like, it is manufactured to be easily discharged dust by rotating at a constant speed.

The vinyl remover 150 is a device for sorting the vinyl and other substances emerging by the blower from the heat drying unit 142 under the heat sterilization dryer 140, and the collecting container can store the vinyl for a certain period of time. Made easy.

The intermediate hopper 160 temporarily stores the food waste transferred through the heat sterilization dryer 140.

The foreign material cooling sorter 170 has a risk of spontaneous ignition and alteration of feed and compost as heat-dried food waste (feed) is discharged to a high temperature (about 70 ° C.). Therefore, in order to prevent such a risk, the food waste (feed) is cooled, and the facility to obtain a high quality feed by sorting the foreign matter contained in the feed, the structure of the internal cooling plate, the rotating drum portion attached to the sorting screen and Divided into the side frame (SIDE FRAME) part to exhaust the waste gas, the cooling plate is arranged at regular intervals inside the drum containing the feed, and they rotate to disperse the incoming feed. In this process, the fan sucks in the air inside the drum, which creates the air flow, absorbs the heat energy contained in the feed, and cools down. In this process, the evaporation effect is about 2 to 3% compared to the input. In addition, foreign matter is filtered by the sorting screen installed at the rear end of the drum, and the feed is discharged to the lower part and is transferred to the magnetic separator. More than a certain size of the foreign matter is sorted by this device to obtain high quality feed. The overall shape is attached to the outside of the drum-shaped body (RINGER) is supported by a roller (ROLLER), driven by a large sprocket of the ring type to separate the foreign matter contained in the food waste secondary sorting.

The hammer mill 180 grinds the food waste that has passed through the foreign material cooling sorter 170 to feed it.

The feed hopper 190 temporarily stores the feed that has passed through the hammer mill 180.

The condenser 220 cools the steam containing a high concentration of malodorous components generated during the sterilization and drying process of the heat sterilization dryer 140, and condenses and separates only the steam to be stored in the condensate tank 230.

The cooling tower 235 serves to cool the cooling water circulating in the condenser 220.

The condensate tank 230 receives and temporarily stores the condensate generated from the steam header 215 of the methane boiler 210 and the condensate generated from the condenser 220, and transfers the condensate to the leachate tank 240.

Leachate tank 240, the leachate generated from the hopper 110, the leachate generated from the compactor 130 and the condensate from the condensate tank 230 is temporarily stored and transferred to the storage tank (310).

The deodorization tank 250 deodorizes the high concentration odor component remaining after the vapor is condensed and separated from the condenser 220 by wet treatment, and the air purified in the deodorization tank 250 is supplied to the combustion air of the methane boiler 210.

2 is an overall configuration diagram of an apparatus for treating leachate (wastewater).

The storage tank 310 temporarily stores the leachate supplied from the leachate tank 240.

The acid fermentation tank 320 performs acid fermentation on the leachate supplied from the storage tank 310 for a predetermined time (more than 2.5 days), and the acid fermentation tank 320 converts the high molecular organic compound into a low molecular organic compound through a hydrolysis process. Let it be. In particular, the reaction proceeds rapidly by introducing a high temperature (53-55 ° C.) digestion method, and is rapidly converted into low molecular organic fatty acids, thereby making it easy to handle. The stirring is performed by pump mixing of the acid fermentation tank mixing pump 325, and the acid-forming microorganism and the high concentration organic It is designed to be in contact with leachate, which is a compound, and inorganic minerals are added to remove sulfur oxides and promote acid fermentation. In addition, by installing a safety device in preparation for the impact load of the leachate flowing into the digester 330, a certain amount flows into the digester 330.

5 is a block diagram of a digester 330 as an apparatus for anaerobic treatment of wastewater containing a low molecular organic compound such as a low molecular organic fatty acid decomposed in an acid fermentation tank 320.

Digestion tank 330 is a facility that modified the high temperature (53 ~ 55 ℃) anaerobic digestion method as a core part for treating high concentration organic wastewater, that is, food waste leachate, by reacting the leachate supplied from the acid fermentation tank 320 with anaerobic microorganisms, The leachate is decomposed into methane gas and digestive liquid.

Conventional anaerobic digestion tanks for organic waste treatment have been driven by installing stirring blades, agitating shafts, driving devices, and control systems to promote the digestion of organic wastewater, but due to excessive facility costs and cultivation of microorganisms for high concentration organic wastewater, etc. Continuous operation was difficult, but the present invention is the leachate supplied from the acid fermentation tank 320 is supplied to the upper portion of the digester 330 through the digester injection pump 331 to a predetermined depth, the circulation line is a digester circulation pump 332 It is sucked by a plurality of suction pipes installed in the lower part of the digester 330 and flows into the digester 330 through the injection pipe installed at a predetermined depth of the upper part and is transported and sprayed to the bottom of the digester 330 as a whole. Due to this spraying pressure, organic wastes that have sunk on the floor are raised, and anaerobic microorganisms and organic wastes are sufficiently contacted. .

In addition, the pumping and circulation is continued to prevent the uninjured organic waste is deposited on the bottom of the digester 330, to maximize the contact time with anaerobic microorganisms so as to be properly mixed with the organic waste, and to float the organic waste to the anaerobic inside the digester 330 Automatic valves are installed in the supply line to improve contact with microorganisms.

Another feature of this digester 330 is to install a weir (weir) in the upper portion so that scum and the like do not flow into the upper digestive fluid, and by installing a slope in the lower inner ware to induce the high-quality extinguishing fluid to be transferred to the digestive fluid storage tank (310). And it is possible to quickly and smoothly digest the organic waste in the digester 330 can reduce the installation and maintenance costs.

The biogas (methane) generated in the digester 330 is extracted with high quality methane and then supplied to the energy source of the methane boiler 210.

The desulfurization tank 333 is a facility for cleaning the biogas (methane) produced in the digestion tank 330 and extracting methane of high quality. The desulfurization tank 333 removes harmful gas and removes moisture contained in the hot gas to the gas storage tank 334. It is a facility to transport.

The gas storage tank 334 adopts a wet gas storage method as a facility for storing high-quality methane extracted from the desulfurization tank 333, and water vapor (moisture) contained in the gas not treated in the desulfurization tank 333. Is removed secondarily as the gas passes through the water. The gas from which water vapor has been removed is stored in the gas storage tank 334 and used as an energy source as needed. The cab can always be monitored for dangers such as explosions, and can be operated automatically during unmanned operation. As a safety device, a warning sound first sounds in the cab by a limit switch, and automatically ignites the surplus gas combustion device 335 secondly and emits air to the third air.

The digestive fluid storage tank 310 temporarily stores the digestive fluid generated in the digester 330.

The pressurized floatation tank 350 pressurizes the digested liquid supplied from the extinguishing liquid storage tank 310 with a pressurized pump 355 to float the untreated floating material upwards, and the supernatant is settled downward. Suspended material generated in this facility can be supplemented with microorganisms in the occurrence of microbial population and digestion tank 330 problems by installing a preliminary circulation line that can be transported to the digester 330 as a collection of fibrous solids and anaerobic microorganisms.

The linked processing transfer tank 360 temporarily stores the upper water supplied from the pressurized floatation tank 350 and discharges it.

The dehydrator 370 is supplied with the suspended solids produced by the pressure relief tank 350 to remove moisture contained in the suspended solids. Pre-integration installs belt presses and decanters to meet legal standards.

The water treated in the dehydrator 370 is returned to the storage tank 310, and the dewatered cake from which the water is removed is transferred to the dewatered cake storage 375 using a conveyor.

The deodorization tank 250 and the biofilter 380 are schematically illustrated in FIG. 6, and the high concentration of odor components generated from the heat sterilization dryer 140 of the recycling facility after primary treatment in the deodorization tank 250, It is completely processed using the combustion air of the methane boiler 210, and the food waste odor generated inside the feed facility and the odor of the digestive liquid generated in the wastewater treatment plant are transferred to the bio filter 380 as a low concentration odor component and then heterope. Purify the odor by decomposing microorganisms such as bacteria, Thiobacillus, Sulfolobus, throbactor, Aspergillus, Nitrobactor, Bacillus, etc. Part of the air purified in the mixture is diluted with the low concentration odor component generated in the digestive fluid storage tank 310 is supplied to the biofilter 380 and purified.

The methane boiler 210 serves to supply steam (steam) by using methane stored in the gas storage tank 334 as an energy source, and installs an LNG boiler in advance to be used when a problem of the methane boiler 210 occurs. It may be.

The methane boiler 210 produces steam used in the heat sterilization dryer 140 of the recycling facility, and supplies the heated steam of the acid fermentation tank 320 and the digestion tank 330 using the remaining waste heat to produce the acid fermentation tank 320. And the digester 330 is maintained at an appropriate temperature.

Feed production method using such food waste recycling apparatus is as follows.

(1) Input stage

The step of injecting food waste into the input hopper (110). Leachate generated from the input hopper is transferred to the leachate tank 240.

(2) Primary coarse foreign material selection stage

In the coarse foreign matter selector 120, the foreign matter contained in the food waste is first selected and separated.

(3) pressing step

Compressing the food waste using the compactor 130.

(4) heat sterilization drying step

Sterilizing food waste using the heat sterilization dryer 140, and heat drying the moisture contained in the food waste.

(5) Dust removal step

Using the dryer cyclone 145 is a step of removing the dust to the duct by the blower.

(6) Vinyl removal step

In the heat sterilization dryer 140, the vinyl remover 150 removes the vinyl and other foreign matters that emerge from the blower.

(7) intermediate hopper stage

Temporarily storing the food waste transferred through the heat sterilization dryer 140.

(8) Foreign material cooling selection stage

It is cooled to prevent spontaneous ignition of food waste (feed) which is heat-dried by using foreign material cooling sorter 170 (about 70 ℃) and deterioration of feed, and food waste (feed) using sorting screen and magnetic separator. ) Is a step of obtaining a high-quality feed by secondary screening foreign matter contained in).

(9) grinding step

The hammer mill 180 is a step of pulverizing and feeding food waste that has undergone the foreign matter cooling selection step.

As a step made in parallel with the above steps,

(10) condensation step

The condenser 220 cools the steam containing a high concentration of odor components generated during the sterilization and drying process of the heat sterilization dryer 140 to condense and separate only the steam.

(11) High concentration odor component processing step

The deodorization tank 250 is a step of supplying the purified air to the combustion air of the methane boiler 210 by deodorizing the high concentration of odor components after the condensation of the steam in the condensation step by wet treatment.

(12) condensate storage step

The condensate generated from the steam header 215 of the methane boiler 210 and the condensate generated from the condenser 220 are transferred and stored in the condensate tank 230.

(13) Leachate Storage Stage

The condensate of the condensate tank 230 and the leachate generated from the input hopper 110 and the compactor 130 is transferred to the leachate tank 240 and stored.

Leachate purification step of purifying the leachate (wastewater) stored in the leachate tank 240; consists of the following process.

(14) Storage tank stage

A step of transferring the leachate of the leachate tank 240 to the storage tank 310 and storing it.

(15) Acid fermentation tank stage

An acid fermentation process is performed for a predetermined time supplied from the storage tank 310 using the acid fermentation tank 320.

The acid fermentation tank stage converts the polymer organic compound into a low molecular organic compound through a hydrolysis process using an acid fermentation tank mixing pump 325.

(16) digester stage

Using the digestion tank 330 is a step of reacting the leachate supplied from the acid fermentation tank 320 with anaerobic microorganisms.

The digester stage circulates the leachate introduced into the upper part of the digester 330 using the digester circulating pump 332 to be in contact with the anaerobic microorganisms of the lower part to decompose the leachate into methane gas and digestive liquid.

(17) Gas cleaning step

The desulfurization tank 333 is used to clean the biogas (methane) produced in the digestion tank 330 to extract methane of high quality and to remove harmful gas and to remove moisture contained in hot gas.

(18) gas storage stage

As a facility for storing high-quality methane extracted from the desulfurization tank 333 by using the gas storage tank 334, the untreated water vapor is removed from the desulfurization tank 333 by water through a wet gas storage method, and then stored. It is used as an energy source as needed.

(19) Digestive fluid storage stage

A step of temporarily storing the digestion liquid generated in the digestion tank 330 in the digestion liquid storage tank 310.

The low concentration odor component generated in the digestive fluid storage tank 310 is mixed with the remaining air except the air supplied to the methane boiler 210 among the air purified in the deodorization tank 250 to use the decomposition action of the microorganism 380 Is supplied.

(20) pressurization

The extinguishing liquid supplied from the extinguishing fluid storage tank 310 is pressurized using the pressurizing pump 355 of the pressurizing flotation tank 350 to raise the untreated floating material upwards and the supernatant is settled downward.

(21) Linked Processing Transfer Stage

A step of temporarily storing the supernatant water supplied from the pressure injured tank 350 in the associated processing transfer tank 360. The supernatant stored in the associated processing transfer tank 360 is discharged.

(22) Dehydrator stage

The dehydrator 370 is used to remove the moisture of the suspended solids supplied from the pressure flotation tank 350.

In the dehydrator step, the water removed from the suspended solids is returned to the storage tank 310, and the dewatered cake from which the water is removed is transferred to the dewatered cake storage 375 using a conveyor.

The leachate purification step includes the following processes in parallel with the above steps.

(23) Energy supply stage

The high quality biogas (methane) produced in the digester 330 is supplied to the energy source of the methane boiler 210, the steam produced in the methane boiler 210 is supplied to the heat sterilization dryer 140, and the remaining waste heat is supplied. By supplying steam to the acid fermentation tank 320 and the digestion tank 330 using the acid fermentation tank 320 and the digestion tank 330 to maintain a proper temperature .

(24) Biofilter stage

Among the air purified from the deodorization tank (250), except for the air supplied to the methane boiler (210) mixed with the low concentration odor components generated in the digestive fluid storage tank (310) to the bio filter (380) using the decomposition action of microorganisms Supply and purify

At this time, the low concentration of odor generated from the food waste of the feed facility is also diluted with mixed dilution is supplied to the bio filter 380 and purified.

7 shows a mass balance map of a leachate (wastewater) treatment plant as described above.

Although the technical idea of the present invention has been described with reference to specific embodiments of the present invention as described above, the scope of protection of the present invention is not limited to these embodiments, and various designs may be made without changing the technical spirit of the present invention. Changes, numerical limitations, additions or deletions of publicly known technologies, conversions and substitutions of conventional means also fall within the protection scope of the present invention.

Technical effects according to the present invention of the above configuration is as follows.

First, it is possible to effectively treat odors and wastewater generated during food waste treatment as well as recycling food resources by feeding food waste.

Second, the (bio) gas generated by incidental treatment of wastewater generated from food waste treatment can be recycled as an energy source.

Third, odor treatment can be carried out in two stages to ensure more complete treatment and reliability.

Fourth, labor costs can be saved by reducing maintenance costs and automated facilities.

Claims (13)

As a device for processing and recycling food waste, Methane boiler 210 for supplying steam; An input hopper 110 into which food waste is input and stored; Coarse foreign matter sorter 120 to crush the food waste stored in the input hopper to a predetermined size and to separate and separate the foreign matter first ; A heat sterilization dryer (140) for sterilizing and drying the food waste using steam supplied from the methane boiler (210); Dryer cyclone 145 to remove dust generated during the drying process of food waste; Vinyl remover 150 for removing the vinyl contained in the food waste; Foreign material cooling sorter 170 for cooling and drying the dried food waste and separates and separates the foreign matter contained in the food waste secondary; A condenser (220) for condensing and separating only steam by cooling steam containing a high concentration of malodorous components generated during sterilization and drying of the heat sterilization dryer (140); A condensate tank 230 for receiving and storing the condensed water generated by the steam header 215 of the methane boiler 210 and the condensed water generated by the condenser 220; A leachate tank 240 for receiving and storing the condensate of the condensate tank 230 and the leachate generated from the input hopper 110; A storage tank 310 for temporarily storing the leachate supplied from the leachate tank 240; An acid fermentation tank 320 for acid fermenting the leachate supplied from the storage tank 310; Digestion tank 330 for reacting the leachate supplied from the acid fermentation tank 320 with anaerobic microorganisms; A desulfurization tank 333 for cleaning the biogas produced in the digester 330 to extract methane of high quality; A gas storage tank 334 for storing the methane extracted from the desulfurization tank 333; A digestive fluid storage tank 310 temporarily storing the digestive fluid generated in the digester 330; A pressurized floatation tank 350 for pressurizing the extinguishing liquid supplied from the extinguishing liquid storage tank 310 with a pressurized pump 355 to float the untreated floating material upward and settling the supernatant water downward; A linked processing transfer tank 360 for temporarily storing the supernatant water supplied from the pressurization tank 350; And, Dehydrator 370 for removing the moisture of the suspended solids supplied from the pressure relief tank (350); Food waste recycling apparatus, characterized in that configured to include. In claim 1, A deodorization tank 250 for deodorizing the high concentration of odor components remaining after condensation of steam from the condenser 220 by wet treatment; Is further provided, The air purified by the deodorization tank 250 is supplied to the combustion air of the methane boiler 210, characterized in that the food waste recycling apparatus. In claim 2, Steam of the methane boiler 210 is supplied to the acid fermentation tank 320 and the digestion tank 330, Gas generated from the digester 330 is a food waste recycling apparatus, characterized in that supplied to the energy source of the methane boiler (210). In claim 3, A cooling tower 235 for cooling the cooling water circulating in the condenser 220; Food waste recycling apparatus characterized in that it is further provided. In claim 3, Compressor 130 for compressing the food waste passed through the coarse foreign matter separator 120 to remove moisture; More is included, Leachate generated from the compactor 130 is a food waste recycling apparatus, characterized in that the transfer to the leachate tank 240. In claim 3, A hammer mill 180 for crushing food waste that has passed through the foreign material cooling sorter 170; Food waste recycling apparatus further comprises a. In claim 3, The digester 330, Digestion tank circulation pump 332 is provided, and the leachate introduced into the upper portion of the digester 330 is circulated by the injection pressure to react with the anaerobic microorganisms of the lower to decompose the leachate into methane gas and digestive liquid Food waste recycling device. In claim 3, Bio filter 380 using the decomposition of microorganisms; More is included, Part of the air purified in the deodorization tank 250 is mixed with the low concentration odor component generated in the digestive fluid storage tank 310 dilution mixed food waste material recycling apparatus, characterized in that supplied to the bio filter (380). An input step of introducing food waste into the input hopper 110; A first coarse foreign material selection step of first separating and separating foreign matters contained in food waste in the coarse foreign material selector 120; A pressing step of pressing the food waste using the pressing machine 130; Sterilization drying step of heating and drying the moisture contained in the heat sterilization and food waste using the heat sterilization dryer (140); A dust removal step of removing dust included in food waste using a dryer cyclone 145; A vinyl removing step of removing the vinyl included in the food waste using the vinyl remover 150; And, Foreign material cooling sorting step of cooling the food waste by using the foreign material cooling sorter 170 and secondly sorting and separating the foreign matter contained in the food waste; It is configured to include, In parallel with the above steps, A condensation step of condensing and separating only the steam by cooling the steam containing a high concentration of malodorous components generated during the sterilization and drying process of the heat sterilization dryer using the condenser 220; A condensate storage step of receiving condensate generated from the steam header 215 of the methane boiler 210 and condensate generated from the condenser 220 and storing the condensate in the condensate tank 230; A leachate storage step of transferring the condensate from the condensate tank 230 and the leachate generated from the input hopper 110 to the leachate tank 240 and storing the leachate; And, Leachate purification step of purifying the leachate of the leachate tank 240; Feed production method using a food waste recycling apparatus characterized in that it comprises a. In claim 9, A high concentration odor component processing step of supplying the purified air to the combustion air of the methane boiler 210 by deodorizing the high concentration odor component remaining after condensing and separating the steam in the condensation step using a deodorization tank 250; Feed production method using a food waste recycling apparatus further comprises a. The leachate purification step of claim 10, A storage tank step of transferring and storing the leachate of the leachate tank 240 to the storage tank 310; An acid fermentation step of acid fermenting the leachate supplied from the storage tank 310 using the acid fermentation tank 320; Digestion tank step of reacting the leachate supplied from the acid fermentation tank 320 with anaerobic microorganisms using the digester 330; Digestive fluid storage tank step of temporarily storing the digestive fluid generated in the digestion tank 330 in the digestive fluid storage tank 310; A pressurized injury step to pressurize the extinguishing fluid supplied from the extinguishing fluid storage tank 310 by using the pressurized pump 355 of the pressurized injury tank 350 to raise the untreated floating material to the upper side and to settle the supernatant to the lower side; A linked processing transfer tank step of temporarily storing the upper water supplied from the pressurized floatation tank 350 in the linked processing transfer tank 360; And, A dehydrator step of removing moisture of the suspended solids supplied from the pressure flotation tank 350 using the dehydrator 370; It is configured to include, In parallel with the above steps, The steam produced in the methane boiler 210 is supplied to the heat sterilization dryer 140 and the steam is supplied to the acid fermentation tank 320 and the digester 330 using the remaining waste heat, and the gas generated from the digester 330 is methane. An energy source supplying step of supplying the energy source of the boiler 210; Feed production method using a food waste recycling apparatus characterized in that it further comprises. The method of claim 11, wherein the digester step, Food waste, characterized in that by using the digestion tank circulating pump 332 to circulate the leachate introduced into the upper portion of the digester 330 by the injection pressure to react with the anaerobic microorganisms of the lower part to decompose the leachate into methane gas and digestive fluid Feed production method using a recycling device. In claim 12, Among the air purified from the deodorization tank (250), except for the air supplied to the methane boiler (210) mixed with the low concentration odor components generated in the digestive fluid storage tank (310) to the bio filter (380) using the decomposition action of microorganisms Supplying and purifying a biofilter step; Feed production method using a food waste recycling apparatus further comprises a.

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