KR200486738Y1 - Apparatus of treating food waste - Google Patents

Abstract

The present invention relates to a food waste disposal facility, and a food waste disposal facility according to an embodiment of the present invention includes a preprocessor for performing a shredding operation and a dewatering operation to produce a composting and power generation gas by receiving food waste; A first post-processor for composting the dehydrated cake discharged from the preprocessor; And a second post-processor for producing a power generation gas using the dehydrated filtrate discharged from the preprocessor, wherein the preprocessor includes a break-up crushing unit for crushing and first crushing the food waste; A crushing and sorting unit for crushing and crushing the food waste that has been crushed in the crushing and crushing unit, and separating the impurities contained in the crushed food waste; A sorting conveyor for receiving the food waste that has been crushed in the crushing sorting unit and sorting the metal contained in the food waste supplied; A particulate crushing unit for crushing the selected food waste from the sorting conveyor by the third conveyor; And a screw dewatering unit for supplying the food waste in the fine particle crushing unit and for separating the supplied food waste into a dehydrated cake and a dehydrated filtrate.

Description

[0001] APPARATUS OF TREATING FOOD WASTE [0002]

The present invention relates to a variable-operation food waste disposal facility, and more particularly, to a food waste disposal facility capable of treating food waste to compost or reproducing it as a power generation gas.

Food waste is increasing every year, and the cost of treating food waste is increasing every year. In particular, the current landfill of food waste is prohibited, and the cost of disposal of drinking wastewater from marine wastewater is prohibited in 2013, which will inevitably lead to an increase in processing costs.

Accordingly, various methods for treating food waste have been proposed. Among them, recycling methods such as composting or feed conversion using a dehydrated cake with a certain amount of water removed, and methods for reproducing power generation gas using dehydrated filtrate are mainly used .

In the above-mentioned method, when the gas for power generation is regenerated by using the food waste, it is necessary to increase the amount of the dehydrated filtrate to be subjected to the anaerobic digestion process of the food waste subject to the initial treatment. In order to increase the amount of methane gas generated during the treatment of food waste in the anaerobic digestion tank, the amount of methane gas generated increases as the amount of dehydrated filtrate to be fed into the anaerobic digestion tank increases, thereby increasing the treatment efficiency.

However, as described above, there has been no research on a food waste treatment facility capable of increasing the amount of dehydrated filtrate. Conventionally, only a process for separating the dehydrated cake and the dehydrated filtrate has been studied, There is a difficult problem.

Korean Patent No. 10-1334873 (November 25, 2013)

A problem to be solved by the present invention is to provide a food waste treatment facility capable of increasing the production amount of methane gas in an anaerobic digestion tank and increasing treatment efficiency of food waste when treating food waste.

According to an embodiment of the present invention, there is provided a food waste disposal apparatus comprising: a preprocessor that performs a shredding operation and a dehydration operation to produce a composting and power generation gas by receiving food waste; A first post-processor for composting the dehydrated cake discharged from the preprocessor; And a second post-processor for producing a power generation gas using the dehydrated filtrate discharged from the preprocessor, wherein the preprocessor includes a break-up crushing unit for crushing and first crushing the food waste; A crushing and sorting unit for crushing and crushing the food waste that has been crushed in the crushing and crushing unit, and separating the impurities contained in the crushed food waste; A sorting conveyor for receiving the food waste that has been crushed in the crushing sorting unit and sorting the metal contained in the food waste supplied; A particulate crushing unit for crushing the selected food waste from the sorting conveyor by the third conveyor; And a screw dewatering unit to which the food waste is supplied in the fine particle grinding unit, and the dewatered food waste is separated and separated into a dehydrated cake and a dehydrated filtrate.

At this time, the screening conveyor has a length of one direction, a body having a charging port formed at one side thereof for charging the food waste in the crushing and sorting unit, and a metal discharge port for discharging the selected metals from the food waste at the other side; A conveyor screw provided inside the body for rotating the waste food waste; And a driving unit for rotating the conveyor screw, wherein the metal outlet is positioned at a higher position than the inlet so that the metal contained in the food waste is raised and discharged along the conveyor screw by rotation of the conveyor screw And can be arranged in a circumferential direction with respect to the horizontal direction so as to be disposed.

And a dewatering cake processor for distributing the dewatering cake separated from the screw dewatering unit to the first post-processor, wherein the dehydrating filtrate separated from the screw dewatering unit is supplied to the second post-processor, The cake processor can supply the separated dehydrated cake through the air blower to the first post-processor.

The first post-processor may further include: a composting dehydrator for extracting sludge from the dehydrating filtrate supplied from the second post-processor; A dewatering cake separated from the screw dewatering unit, a sludge supplied from the composting dehydrator, and a mixer for mixing and supplying the sawdust; And a compost fermenter for feeding and mixing the mixed mixture in the mixer.

The second post-processor may further include a rotary drum sorter for separating the sludge from the dehydrating filtrate separated from the screw dewatering unit; An acid fermenter which receives the dehydrated filtrate from the rotary drum sorter to ferment microbes; And an anaerobic digestion tank for anaerobically digesting the microorganism fermented by the acid fermentation tank and separating and discharging useful gas for power generation.

At this time, the mixer can receive and mix the sludge separated from the rotary drum sorter, the sludge separated from the sludge dewatering unit, and the sludge and sawdust supplied from the composting dehydrator.

The rotary drum sorter further comprises: a case for storing a dewatering filtrate separated from the screw dewatering unit and having a charging port for charging the dehydrating filtrate to one side and a discharge port for discharging the dehydrating filtrate to the other side; And a driving unit for rotating the dehydrating filtrate in the case. The sludge outlet, through which the sludge included in the dehydrating filtrate is separated and discharged as the dehydrating filtrate in the case rotates, may be formed at the lower part.

In addition, the compost fermentation tank may be provided with a heat exchange pipe therein for raising the temperature of the outside air supplied from the outside of the fermentation heat generated by the fermentation of the mixture.

The compost selector may further include a compost separator for removing contaminants from composts fermented in the compost fermenter, the compost selector comprising: a main frame; A shaft rotatably mounted on the main frame at a predetermined angle; A screen installed to surround the outer circumferential surface of the shaft so as to be spaced apart from the shaft by a predetermined distance; And a driving unit for rotating the shaft.

According to the present invention, the food waste is crushed about three times in succession through the crushing unit, the crushing screening unit, and the crushing unit. After the crushing, the metal that can be contained in the food waste is removed, By separating the cake and the dehydrating filtrate, it is possible to improve the power generation efficiency such as an increase in the power generation amount.

In addition, by removing the metals from the food wastes supplied to the particulate crushing unit, environmental pollution inside the particulate crushing unit can be prevented, and the food waste can be milled more efficiently.

1 is a schematic view showing a food waste treatment facility according to an embodiment of the present invention.
2 is a schematic diagram showing a preprocessor of a food waste treatment facility according to an embodiment of the present invention.
3 is a schematic view showing a sorting conveyor of a food waste disposal facility according to an embodiment of the present invention.
4 is a schematic view showing a first post-processor of a food waste treatment facility according to an embodiment of the present invention;
5 is a schematic view showing a mixer of a food waste treatment facility according to an embodiment of the present invention.
6 is a schematic view showing a compost sorter of a food waste disposal facility according to an embodiment of the present invention.
7 is a schematic view showing a compost sorter of a food waste treatment facility according to an embodiment of the present invention.
8 is a schematic diagram showing a second post-processor of the food waste treatment facility according to an embodiment of the present invention.
9 is a schematic view showing a rotary drum sorter of a food waste disposal facility according to an embodiment of the present invention.

Preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

1 is a schematic view showing a food waste treatment facility according to an embodiment of the present invention.

Referring to FIG. 1, the food waste disposal apparatus 10 according to the present embodiment includes a preprocessor 100, a first post-processor 300, and a second processor 300 to compost the food waste using the food waste, And a post-processor 500. The preprocessor 100 processes the food waste before the composting process or the gas production process is performed. The first post-processor 300 uses the food waste processed in the preprocessor 100 The composting process is performed. Then, the second post-processor 500 performs the process of producing the power generation gas using the food waste processed in the preprocessor 100.

FIG. 2 is a schematic view showing a pretreatment unit of a food waste treatment facility according to an embodiment of the present invention, and FIG. 3 is a schematic view showing a sorting conveyor 150 of a food waste treatment facility according to an embodiment of the present invention.

The preprocessor 100 performs pre-processing of the food waste before the process of producing the composting process gas or the power generation gas is performed through the processes such as breaking, crushing, and dewatering by receiving the food waste . The pretreatment apparatus 100 includes a feed hopper 110, a breaking and breaking unit 120, a crushing and sorting unit 130, a conveyor dewatering unit 140, a sorting conveyor 150, a fine particle crushing unit 160, Unit 170, and a dehydrated cake processor.

The input hopper 110 temporarily stores the food waste from the food waste container. The food wastes discharged from the input hopper 110 are moved to the break breaking unit 120 through the discharge conveyor 111 and the break breaking unit 120 breaks the food waste and performs the primary breaking process. The crushing and sorting unit 130 secondly crushes primary crushed food waste through the crushing crushing unit 120 and separates the impurities contained in the food waste.

At this time, the break breaking unit 120 includes a housing provided with a food waste input port and a discharge port, a plurality of break breaking rollers provided to rotate in the housing, and a driving unit rotating the break breaking roller. The plurality of breaking breaking rollers are spaced apart from each other at regular intervals, and teeth can be formed respectively. So that the standard envelope containing the food wastes and the contents can be discharged to the discharge port side in accordance with the rotation of the breaking breaking roller. The food wastes can be transferred to the crushing and sorting unit 130 through the conveying screw provided below the crushing and crushing unit 120.

As shown in FIGS. 1 and 2, the crushing and sorting unit 130 may be provided with a food waste input port, a food waste discharge port, and a contaminant discharge port, and secondarily crushes the food waste put into the inside. At this time, the secondary crushing is crushed to have a particle size smaller than that of the primary crushing. To this end, the crushing and sorting unit 130 may include a crushing unit for secondary crushing and a driving motor for driving the crushing unit. The crushing part for secondary crushing is rotated by a driving motor or the like, and a hammer blade including three or more blade pieces may have a structure for crushing food waste by striking a plurality of food waste. In addition, the shredded food waste can be configured to be shredded and simultaneously discharged to the outside. In addition, food waste and food waste can be separated and discharged separately (for example, shredded standard bags, hard-to-break cattle bones, etc.).

The conveyor dewatering unit 140 first dehydrates the food waste discharged from the crushing sorting unit 130 to make the food waste dewatered solid. The food waste made from dehydrated solids is again selected through the sorting conveyor (150).

As shown in FIGS. 1 and 2, the conveyor dewatering unit 140 is installed in an inclined state on the bottom surface of the conveyor. The conveyor dewatering unit 140 is firstly dewatered while transferring the food wastes to the conveyor dewatering unit 140. The conveyor dewatering unit 140 is installed upwardly inclined from the inlet to the outlet . Accordingly, the leachate drained from the food waste can smoothly move downward and be discharged to the outside. The discharged leachate may be transferred to and stored in the dehydrated filtrate reservoir 510 of the second post-processor 500.

The upwardly displaced broken and dehydrated food wastes are introduced into the sorting conveyor 150 through the crushing food inlet 152 of the sorting conveyor 150 and the sorting conveyor 150 rotates the crushed food waste waste at a low speed, The waste is allowed to fall to the bottom of the sorting conveyor 150, and the metal contained in the broken food waste is raised by the conveyor screw 156 and separated and discharged through the metal outlet 154.

For this purpose, the sorting conveyor 150 is formed with at least one crushed food inlet 152 (in this embodiment, four crushed food feed openings 152 are formed) into which crushed food waste is injected. And a conveyor screw 156 rotated at a low speed is disposed to rotate the pulverized food waste waste at a low speed. Accordingly, the conveyor screw 156 moves along the metal only conveyor screw 156 while rotating the crushed food waste at a low speed, and the crushed food waste other than metal is immediately discharged to the lower portion of the sorting conveyor 150. So that the bottom of the body of the sorting conveyor 150 can be opened. The conveyor screw 156 may be subjected to a force to separate the metal and the crushed food waste, such as magnetic force or electrostatic force.

As shown in FIG. 3, the screening conveyor 150 is provided with a crushing food inlet 152 at an upper portion thereof and a metal outlet 154 at a lower portion of the opposite side thereof. And the metal outlet 154 is disposed in an inclined state so as to be positioned on the upper side. That is, the crushed foodstuff inserted through the crushed food inlet 152 moves upwards by the conveyor screw 156 in the sorting conveyor 150. As the conveyor screw 156 is rotated, the crushed food falls downward, and the metal is moved through the conveyor screw 156 and discharged through the metal outlet 154.

As described above, the crushed foodstuff having the metals separated through the sorting conveyor 150 falls down from the screening conveyor 150 and is put into the fine particle crushing unit 160. The fine particle crushing unit 160 mills the crushed foodstuffs that have been charged in a milling manner to perform the third crushing. In this way, the food waste in the form of fine particles crushed in the particulate crushing unit 160 is put into the screw dewatering unit 170.

At this time, the fine particle grinding unit 160 may include a driving unit for rotating the first and second mills together with the first and second millstones. Accordingly, the second millstone is rotated by the driving portion, and the first millstone can be fixed. The food wastes thus introduced are introduced into the space between the first and second millstones and can be thirdly crushed by the mutual friction between the first and second millstones and discharged to the side clearances of the first and second millstones. At this time, the leachate may be discharged together with the food waste.

The screw dewatering unit 170 rotates and discharges the food waste put in the fine particle crushing unit 160 to separate the dewatered cake and the dehydrated filtrate. That is, the introduced food waste is dehydrated from the inside of the food waste by centrifugation. To this end, the screw dewatering unit 170 is provided with a plurality of rotating blades therein, and the food waste injected by the rotation of the plurality of rotating blades is centrifuged, and the diameter thereof gradually decreases toward the outlet side. The dewatered cake separated through the centrifugal separation is discharged to the dewatering cake discharge conveyor 181 of the dewatering cake processor, and the dewatered filtrate can be transferred to and stored in the dewatering filtrate reservoir 510 of the second post-processor 500.

The dewatered cake discharged from the screw dewatering unit 170 is conveyed through the dewatering cake discharge conveyor 181 and the dewatered cake conveyed through the dewatering cake discharge conveyor 181 can be dispensed from the dewatering cake dispensing conveyor 183 . The dewatering cake dispensing conveyor 183 is provided to dispense the dewatered cake. The dewatered cake thus dispensed may be supplied to the mixer 340 of the first post-processor 300 by the dewatering cake air blower 185. To this end, the dewatering cake processor may include a dewatering cake discharge conveyor 181, a dewatering cake dispensing conveyor 183 and a dewatering kale air blower.

4 is a schematic view showing a first post-processor of a food waste treatment facility according to an embodiment of the present invention; FIG. 5 is a schematic view showing a mixer 340 of a food waste treatment facility according to an embodiment of the present invention, and FIG. 6 is a view showing a compost fermentation tank 360 of a food waste treatment facility according to an embodiment of the present invention Fig. And FIG. 7 is a schematic view showing a compost sorter 370 of a food waste treatment facility according to an embodiment of the present invention.

The first post-processor 300 receives the dehydrated cake discharged from the preprocessor 100 and performs a composting process as described above. 4, the first post-processor 300 includes a digester sludge storage tank 310, a composting dehydrator 320, a desalinate storage tank 330, a mixer 340, a sawdust storage hopper 350, A compost fermenter (360), a compost sorter (370), and a compost arm box (380).

The digested sludge storage tank 310 stores the sludge discharged from the anaerobic digestion tank 540 and stores the sludge discharged from the anaerobic digestion tank 540 for recomposing. Then, the stored sludge is supplied to the compost dehydrator 320.

The composting dehydrator 320 is provided to remove moisture contained in the sludge supplied from the digester sludge storage tank 310. Thus, the composting dehydrator 320 dehydrates the water contained in the sludge as the sludge moves to the discharge port side where the sludge is discharged at the inlet where the sludge is injected. The dehydrated desalination liquid is discharged to the lower portion of the compost dehydrator 320, and the discharged desorbed liquid is collected and stored in the desalination liquid storage vessel 330. The sludge whose moisture is dehydrated in the compost dehydrator 320 is supplied to the mixer 340.

5, the mixer 340 mixes the sludge supplied from the composting dehydrator 320, the pulverized dehydrated cake transferred by the dehydrating cake air blower 185, and the rotary drum separator 520 of the second post-processor 500 And the sawdust supplied from the sawdust storage hopper 350 together with the selected sludge. To this end, the mixer 340 includes a first rotating bar 341, a paddle 343, a second rotating bar 345, a pin mill 347 and a driving motor 349.

The first rotating bar 341 is disposed inside the mixer 340 and is rotated by a driving motor 349 and has a plurality of paddles 343 on its outer circumferential surface. The plurality of paddles 343 are provided with a surface having a predetermined area and the surfaces of the plurality of paddles 343 are connected to the dewatering cake introduced into the mixer 340 as the first rotating bar 341 rotates, As shown in Fig. That is, the surfaces of the plurality of paddles 343 are arranged perpendicular to the outer peripheral surface of the first rotating bar 341, and the dewatering cake, sludge and sawdust are arranged inside the mixer 340 in accordance with the rotation of the first rotating bar 341 And can be arranged so as to be oriented so as to be transported.

As the paddle 343 is formed on the first rotary bar 341 and the first rotary bar 341 rotates, the dehydrated cake, sludge and sawdust introduced into the mixer 340 are first crushed and crushed And the sludge crushed and ground by the rotation of the first rotating bar 341 can be moved toward the second rotating bar 345 side.

The second rotation bar 345 is disposed in parallel with the first rotation bar 341 at a distance from the first rotation bar 341 by a predetermined distance and can be rotated simultaneously with the first rotation bar 341 by the drive motor 349. At this time, the second rotation bar 345 may be reversed from the rotation direction of the first rotation bar 341 according to the arrangement of the gears.

A plurality of pin mills 347 may be formed on the outer circumferential surface of the second rotating bar 345 and the plurality of pin mills 347 may be provided with vertical pins 347a arranged in a direction perpendicular to the outer peripheral surface of the second rotating bar 345 And a plurality of horizontally arranged horizontal pins 347b. At this time, the plurality of horizontal fins 347b can have the shape of a bar, and the sludge raised by the rotation of the first rotating bar 341 together with the vertical pin 347a can be crushed, .

The sawdust storage hopper 350 is provided for supplying sawdust to the mixer 340, and the sawdust can serve as a catalyst for composting the dehydrated cake and the sludge introduced into the mixer 340.

As described above, the mixture in the mixer 340 may be discharged from the mixer 340 and transferred to the compost fermenter 360. As shown in FIG. 6, the compost fermentation tank 360 is provided for fermenting a mixture of the dehydrated cake, sludge and sawdust supplied from the mixer 340, and has two or more stages upward in the upward direction Multiple stages may be provided. And may be provided in plural as the need arises in the lateral direction. That is, when viewed from the upper side to the lower side, the compost fermentation tank 360 can be configured such that a plurality of fermentation tanks are arranged in an m * n matrix structure.

At this time, the mixture introduced into the compost fermentation tank 360 is fermented to generate fermentation heat of about 80 degrees. The fermentation heat thus generated can be used to raise the temperature of the outside air supplied into the compost fermentation tank 360. For this purpose, when a heat exchange pipe is provided inside the compost fermentation tank 360 and outside air is supplied into the compost fermentation tank 360, the outside air can be raised to about 50 degrees by the fermentation heat. Thus, the fermentation heat generated in the compost fermentation tank 360 can be recovered and recycled.

As described above, the mixture of the dehydrated cake, sludge and sawdust added in the compost fermentation tank 360 is fermented to produce compost, and the thus produced compost is supplied to the compost separator 370.

Referring to FIG. 7, the compost sorter 370 is provided to remove contaminants such as vinyl that may be contained in the compost. For this purpose, the compost sorter 370 includes a main frame 372, a motor 374, a shaft 376 and a screen 378. 7, a shaft 376 and a screen 378 are installed on the main frame 372, and the shaft 376 is inclined with respect to the main frame 372 by a predetermined amount or more Lt; / RTI > A screen 378 is provided to surround the outer circumferential surface of the shaft 376 while being spaced apart from the outer circumferential surface of the shaft 376. The motor 374 is mounted on the rotating shaft of the shaft 376 to rotate the shaft 376.

The compost is put into the compost separator 370, and the contaminants such as vinyl mixed in the compost can be selected by rotation.

The compost, from which contaminants such as vinyl are removed, can be supplied to the compost arm box 380 and stored.

8 is a schematic diagram showing a second post-processor of the food waste treatment facility according to an embodiment of the present invention. 9 is a schematic view showing a rotary drum sorter of a food waste disposal facility according to an embodiment of the present invention.

The second post-processor 500 performs a process for producing gas for power generation using the dehydrated filtrate processed in the preprocessor 100, as described above. 8, a dehydrated filtrate storage tank 510, a rotary drum sorting unit 520, an acid fermentation tank 530, an anaerobic digestion tank 540, a digestion gas purifier 550, a digestion gas storage tank 560, Dehumidifier 570, a gray desulfurizer 580, an excess gas combustor 590, a fire extinguishing gas generator 610, a generator waste heat recovery boiler 620, and a generator waste heat recovery boiler steam distributor 630.

The dehydrated filtrate storage tank 510 stores the dehydrated filtrate discharged from the conveyor dewatering unit 140 and the screw dewatering unit 170 of the preprocessor 100. Then, the dehydrated filtrate stored in the dehydrated filtrate storage tank 510 is supplied to the rotary drum separator 520.

The dehydrated filtrate discharged from the conveyor dewatering unit 140 and the screw dewatering unit 170 is stored in the dehydrated filtrate storage tank 510. A certain amount of sludge may be included in the dehydrated filtrate. The rotary drum sorting unit 520 is provided to sort the sludge included in the dehydrated filtrate, and sludge is selected by rotating the supplied dehydrated filtrate. 9, the rotary drum sorter 520 includes a case 521, a dehydrating filtrate inlet 523, a dehydrating filtrate outlet 525, a sludge outlet 527, and a motor 529 .

The case 521 is provided with a receiving space therein in the horizontal direction and has a dehydrating filtrate inlet 523 on one side and a dehydrating filtrate outlet 525 on the other side. The dehydrating filtrate charged through the dehydrating filtrate inlet 523 is rotated by a motor 529 inside the case 521 to select a dehydrated filtrate and sludge. The relatively heavy sludge may be separated from the dehydrated filtrate by rotation and discharged to the outside through the sludge discharge port 527 at the lower portion and the separated dehydrated filtrate may be separated and discharged through the dehydrated filtrate discharge port 525 .

By selecting the sludge in the dehydrating filtrate, the amount of sludge can be minimized in the dehydrating filtrate supplied to the anaerobic digestion tank 540. At this time, the sludge discharged from the rotary drum sorting unit 520 is supplied to the mixer 340 of the first post-processor 300, and the discharged dehydrated filtrate is supplied to the acid fermentation tank 530.

The acid fermentation tank 530 is a kind of solubilization tank, in which the microorganisms are inoculated in the dehydrated filtrate to ferment the microorganisms, thereby converting the dehydrated filtrate to be usable for producing the power generation gas. For this, the acid fermentation tank 530 in this embodiment can be applied to the acid fermentation tank 530 used for using the food waste as a power generation gas, and a detailed description thereof will be omitted.

The anaerobic digestion tank 540 is provided for anaerobically digesting the dehydrated filtrate obtained by fermenting the microorganisms in the acid fermentation tank 530, and then separating and discharging useful gas for power generation. Thereby, a digester feed pump 541 for feeding the dehydrated filtrate to the narrow-band digester, and a circulation pump for circulating the dehydrated filtrate in the digester can be provided.

The anaerobic digestion tank 540 is provided with a storage tank in which a dehydrated filtrate is stored. An anaerobic digestion reaction occurs while the dehydrated filtrate stored in the storage tank is stirred, and a useful gas (for example, methane gas) And then discharged to the extinguishing gas purifier 550.

The dehydrated filtrate not sufficiently stirred in the anaerobic digestion tank 540 is supplied again to the anaerobic digestion tank 540 by the digestion tank circulation pump 543 and the sludge generated while the dehydrated filtrate is stirred in the anaerobic digestion tank 540 And is supplied to the digester sludge storage tank 310 of the first post-processor 300.

The useful gas supplied to the digestion gas purifier 550 is purified and supplied to the digestion gas reservoir 560 and is supplied to the surplus gas combustor 590 through the dehumidifier and the desalination unit 580, Gas generator 610, respectively. The useful gas supplied to the digestion gas generator 610 may be supplied to the sewage sludge recycling facility 700 through the generator waste heat recovery boiler 620 and the generator waste heat recovery boiler steam distributor 630.

Although the present invention has been described with reference to specific embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It should be understood that the scope of the present invention is to be understood as the scope of the following claims and their equivalents.

10: Food waste treatment plant
100: preprocessor 110: input hopper
111: Discharge conveyor 120: Breaking crushing unit
130: crushing and sorting unit 140: conveyor dewatering unit
150: sorting conveyor 152: crushed food inlet
154: metal outlet 156: conveyor screw
160: fine particle crushing unit 170: screw dewatering unit
181: Dewatering cake discharge conveyor 183: Dewatering cake dispensing conveyor
185: Dehydrated cake air blower
300: first post-processor
310: digestion sludge reservoir 320: composting dehydrator
330: desorption tank 340: mixer
341: first rotating bar 343: paddle
345: second rotating bar 347: pinch mill
347a: Vertical pin 347b: Horizontal pin
349: Driving motor 350: Sawdust storage hopper
360: compost fermenter 370: compost selector
372: main frame 374: motor
376: shaft 378: screen
380: Manure compost box
500: second post-processor
510: Dehydrated filtrate storage tank 520: Rotary drum sorting machine
521: Case 523: dehydrated filtrate inlet
525: Dehydrated filtrate outlet 527: Sludge outlet
529: motor 530: acid fermenter
540: anaerobic digester 541: digester feed pump
543: digester circulation pump 550: digestion gas purifier
560: Extinguishing gas storage tank 570: Dehumidifier
580: Monochrome desulfurizer 590: Surplus gas combustor
610: Extinguishing gas generator 620: Power generation waste heat recovery boiler
630: Generating waste heat recovery boiler steam distributor
700: Sewage sludge resource facility

Claims (9)

A preprocessor which receives food waste and performs shredding and dehydration to produce composting and power generation gas;
A first post-processor for composting the dehydrated cake discharged from the preprocessor; And
And a second post-processor for producing a power generation gas using the dehydrated filtrate discharged from the pre-processor,
The pre-
A breaking breaking unit breaking and primary breaking the food wastes; A crushing and sorting unit for crushing and crushing the food waste that has been crushed in the crushing and crushing unit, and separating the impurities contained in the crushed food waste; A sorting conveyor for receiving the food waste that has been broken in the crushing and sorting unit and sorting the metals contained in the supplied food waste; A particulate crushing unit for crushing the selected food waste from the sorting conveyor by the third conveyor; And a screw dewatering unit to which the food waste is supplied from the fine particle grinding unit and which is separated into a dehydrated cake and a dehydrated filtrate by dehydrating the supplied food waste,
Wherein the first post-
A composting dehydrator for extracting sludge from the dehydrating filtrate supplied from the second post-processor; A dewatering cake separated from the screw dewatering unit, a sludge supplied from the composting dehydrator, and a mixer for mixing and supplying the sawdust; And a compost fermenter for feeding and fermenting the mixed mixture in the mixer,
Wherein the second post-
A rotary drum sorter for separating the sludge from the dehydrating filtrate separated from the screw dewatering unit; An acid fermenter which receives the dehydrated filtrate from the rotary drum sorter to ferment microbes; And an anaerobic digestion tank for anaerobically digesting the microorganism fermented by the acid fermentation tank and separating and discharging useful gas for power generation,
The mixer
A drive motor; A first rotating bar rotated by the driving motor; A plurality of paddles disposed obliquely so as to be oriented on an outer circumferential surface of the first rotating bar; A second rotating bar rotated by the driving motor, the second rotating bar being spaced apart from the first rotating bar by a predetermined distance; And a plurality of pinholes provided on an outer circumferential surface of the second rotary bar, the plurality of pinholes comprising a vertical pin arranged in a direction perpendicular to an outer circumferential surface of the second rotary bar, and a horizontal pin arranged horizontally. Waste disposal facility.
2. The sorting conveyor according to claim 1,
A body having a length in one direction and formed at one side with an inlet through which the food waste is injected in the crushing and sorting unit and a metal outlet through which the selected metal is discharged from the food waste at the other side;
A conveyor screw provided inside the body for rotating the waste food waste; And
And a driving unit for rotating the conveyor screw,
The body is disposed in a state of being inclined with respect to the horizontal direction so that the metal flow outlet is positioned higher than the inlet so that the metals contained in the food waste are raised and discharged along the conveyor screw by the rotation of the conveyor screw Food waste disposal facility.
The method according to claim 1,
And a dewatering cake processor for distributing the dewatered cake separated from the screw dewatering unit and supplying the dewatered cake to the first post-processor,
The dehydrated filtrate separated from the screw dewatering unit is supplied to the second post-processor,
Wherein the dehydrated cake processing unit supplies the separated dehydrated cake to the first post-processor through an air blower.
The method according to claim 1,
Wherein the composting dehydrator is supplied with sludge discharged from the anaerobic digestion tank.
The method according to claim 1,
Wherein the mixer receives the sludge separated from the rotary drum sorter and receives the dewatered cake separated from the screw dewatering unit and the sludge and sawdust supplied from the composting dehydrator.
The rotary drum type washing machine according to claim 1,
A case for storing a dehydrated filtrate separated from the screw dewatering unit and having a charging port for charging the dehydrating filtrate to one side and a discharge port for discharging the dehydrating filtrate to the other side; And
And a driving unit for rotating the dehydrating filtrate in the case,
Wherein the case has a sludge discharge port formed at a lower portion thereof to discharge and discharge the sludge contained in the dehydrated filtrate as the dehydrated filtrate in the case rotates.
The method according to claim 1,
Wherein the compost fermenter is provided with a heat exchange pipe therein for raising the temperature of the outside air supplied from the outside of the fermentation heat generated by the fermentation of the mixture.
The method according to claim 1,
Further comprising a compost sorter for removing contaminants from composts fermented in said compost fermenter.
9. The composting machine according to claim 8,
Mainframe;
A shaft rotatably mounted on the main frame at a predetermined angle;
A screen installed to surround the outer circumferential surface of the shaft so as to be spaced apart from the shaft by a predetermined distance; And
And a driving unit for rotating the shaft.

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