CN111389872B - Kitchen waste treatment method - Google Patents
Kitchen waste treatment method Download PDFInfo
- Publication number
- CN111389872B CN111389872B CN202010287275.3A CN202010287275A CN111389872B CN 111389872 B CN111389872 B CN 111389872B CN 202010287275 A CN202010287275 A CN 202010287275A CN 111389872 B CN111389872 B CN 111389872B
- Authority
- CN
- China
- Prior art keywords
- anaerobic fermentation
- kitchen waste
- bin
- iron powder
- grinding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000010806 kitchen waste Substances 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 148
- 238000000855 fermentation Methods 0.000 claims abstract description 81
- 230000004048 modification Effects 0.000 claims abstract description 51
- 238000012986 modification Methods 0.000 claims abstract description 51
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000003860 storage Methods 0.000 claims abstract description 27
- 239000002245 particle Substances 0.000 claims abstract description 17
- 239000003895 organic fertilizer Substances 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims abstract description 3
- 238000000227 grinding Methods 0.000 claims description 49
- 230000004151 fermentation Effects 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 9
- 238000006460 hydrolysis reaction Methods 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 230000007062 hydrolysis Effects 0.000 claims description 8
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 4
- 238000009792 diffusion process Methods 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 239000010813 municipal solid waste Substances 0.000 abstract description 9
- 230000009467 reduction Effects 0.000 abstract description 6
- 239000008187 granular material Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 12
- 239000003082 abrasive agent Substances 0.000 description 6
- 238000000354 decomposition reaction Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 244000005700 microbiome Species 0.000 description 4
- 239000005416 organic matter Substances 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 239000010794 food waste Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000008157 edible vegetable oil Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011146 organic particle Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
- B02C17/163—Stirring means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
- B02C2201/06—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kitchen waste treatment method, which comprises the following steps: kitchen garbage gets into breaker (3) earlier and is tentatively broken, the large granule becomes the tiny particle, then get into storage hopper (5) and keep in, with the speed of balanced breaker's processing speed and follow-up flow, then enter into material modification device (12) through delivery pump (7), carry out magnetic field and abrasive treatment to kitchen garbage in material modification device (12), the iron powder is thrown feeder apparatus (8) through the iron powder and is got into material modification device (12) and promote the modification of kitchen garbage, modified kitchen garbage gets into anaerobic fermentation device (10) and carries out anaerobic fermentation, form organic fertilizer, simultaneously, anaerobic fermentation device (10) are introduced through the pipeline to high-temperature gas in the material modification device, guarantee the required temperature of anaerobic fermentation. The invention greatly improves the reduction and harmless treatment efficiency of the kitchen materials.
Description
Technical Field
The invention relates to the field of kitchen waste treatment, in particular to a kitchen waste treatment method.
Background
The kitchen waste mainly refers to waste generated by residents in catering and kitchen processes, mainly comprises residual rice, flour, rape and fruit, edible oil and the like after eating, and in terms of components, the kitchen waste mainly contains starch, protein, cellulose, inorganic salt, lipid and the like, and is extremely easy to deteriorate and rot, emit stink and spread bacteria, viruses and the like. Along with the increase of economy, the physical life of people is improved day by day, the dining outside is greatly increased, and the urban population is more and more, so that the urban kitchen waste is produced greatly. Because the kitchen waste is easy to rot and deteriorate and is easy to spread diseases, if the kitchen waste is not treated in time, the odor emitted by the kitchen waste can seriously affect the living environment of residents, and meanwhile, some kitchen waste can deteriorate and breed bacteria and the like, which are extremely easy to affect the physical and mental health of people. If the kitchen waste is not properly disposed, the pollution to the atmosphere, water and the like can be caused, and the life of people is seriously influenced. With the growth of population in China and the rapid development of catering industry, the yield of food waste is increasing day by day. According to published data of a solid waste network in China, 4000 ten thousand tons of food waste are generated in China every year, 8200 ten thousand tons of disposal amount are generated in China every day at present, the corresponding disposal rate is only 10%, and the disposal pressure is huge.
Common mechanical treatment modes comprise mechanical crushing, screw extrusion and then biological anaerobic fermentation treatment, however, the fermentation speed of the kitchen organic matters depends on the size of material particles, and the organic particles need to be in direct contact with the surfaces of microorganisms so as to be effectively decomposed. Common modes for promoting effective decomposition include heating, mechanical crushing, chemical methods and the like, which mainly have the functions of improving the bioavailability and mass transfer efficiency between substrate particles and substrates to decompose organic matters, while chemical and microbial treatment has been studied for years, but mainly stays in the research stage of laboratories, and the proposed method cannot be applied to the field of kitchen waste treatment with huge volume on a large scale, and has low treatment efficiency.
Disclosure of Invention
The invention aims to solve the technical problem of providing a kitchen waste treatment method with high treatment rate, and further realizing resource utilization.
The technical scheme of the invention provides the following kitchen waste treatment method, which comprises the following steps: kitchen garbage gets into breaker earlier and is tentatively broken, the large granule becomes the tiny particle, then get into the storage hopper and keep in, with the speed of balanced breaker's processing speed and follow-up flow, then enter into material modification device through the delivery pump, carry out magnetic field and abrasive treatment to kitchen garbage in material modification device, the iron powder adds the modification that the device got into material modification device promotion kitchen garbage through the iron powder, modified kitchen garbage gets into anaerobic fermentation device and carries out anaerobic fermentation, form organic fertilizer, simultaneously, high temperature gas in the material modification device passes through the pipeline and introduces anaerobic fermentation device, guarantee the required temperature of anaerobic fermentation.
Optionally, the kitchen waste treatment method is based on a kitchen waste treatment device, the kitchen waste treatment device comprises a rack, a bin arranged above the rack, a crushing device arranged below the bin, a rotating motor, a storage hopper, a connecting pipe, a feed pump, an anaerobic fermentation device and an electric controller, wherein the storage hopper is positioned below the crushing device, the kitchen waste treatment device further comprises a material modification device and a heat recycling device, the storage hopper is communicated with the material modification device through the connecting pipe and the feed pump, the anaerobic fermentation device is positioned at the rear end of the material modification device, and the heat recycling device is communicated with the material modification device and the anaerobic fermentation device. Kitchen garbage falls into breaker the inside from the feed bin, after breaker handles, temporary storage is in the storage case the inside, and obtain the solid-liquid mixture of broken material, the storage case below is connected with the delivery pump, the material can be taken the material out from the storage case under gravity and the pressure of delivery pump, send into in the material modification device, solenoid among the material modification device produces the electromagnetic eddy current, electromagnetic heating adopts magnetic field induction eddy current heating principle, can heat the material temperature in the cavity to more than 100 ℃, can promote the quick hydrolysis of organic matter.
Optionally, the material modification device comprises a material fine grinding device, an iron powder feeding device and an electromagnetic eddy current generation device. The material is mechanically ground in the modification device, and is heated by electromagnetic eddy current, the material particles become small under the action of the iron powder, the heating is sufficient, and the decomposition of organic matters is accelerated.
Optionally, the meticulous grinder of material include abrasive material bin, reduction gear and first motor, abrasive material bin upper end be equipped with the feed inlet, the feed inlet pass through the box on the entry be connected with the connecting pipe, the lower extreme of abrasive material bin be equipped with the discharge gate, the discharge gate export through the abrasive material bin be connected with the discharging pipe, one side of abrasive material bin is connected with reduction gear and first motor, the opposite side is fixed with the bearing that is connected with the pivot, the output of reduction gear be connected with the pivot of level setting in the abrasive material bin, the pivot above evenly distributed the steel nail, carry out milling of material under first motor and reduction gear effect. The size of material particles can be reduced, the inside of the material can be heated more uniformly by continuous stirring, and the subsequent fermentation hydrolysis efficiency is improved.
Optionally, the electromagnetic eddy current generating device comprises an electromagnetic coil, an alternating current power supply and an abrasive bin, the electromagnetic coil is tightly wound on the abrasive bin, the two ends of the electromagnetic coil are connected with the alternating current power supply, an insulating material is coated outside the electromagnetic eddy current generating device, the electromagnetic eddy current generating device generates electromagnetic eddy currents to destroy cell molecular structures, the temperature of materials inside the cavity is increased, and hydrolysis of kitchen waste is promoted. The power supply is an alternating current power supply, and can send out a constantly-changed electromagnetic field into the grinding material bin to generate an electromagnetic eddy current, so that the temperature of materials in the chamber is increased, the hydrolysis of organic matters is promoted, meanwhile, the materials are subjected to the shearing action of mechanical force in different directions, the size of material particles is greatly reduced, and the decomposition of the organic matters is accelerated.
Optionally, the iron powder adding device is arranged above the grinding material bin, the iron powder can be automatically added into the grinding material bin through the iron powder adding device, the iron powder is uniformly mixed in the material under the stirring of the device in the grinding material bin, the magnetism of a magnetic field is enhanced, meanwhile, the internal heat diffusion of the material is facilitated, the better modification of the material is facilitated, the efficiency of a subsequent anaerobic fermentation stage is improved, the adding amount of the iron powder is determined according to the following steps, and the volume ratio of the iron powder to the kitchen waste is as follows: 5-8g of iron powder is added into each liter of kitchen waste. Through adding appropriate amount of iron powder, inside the stirring through the pivot made the iron powder evenly get into the material, can improve the material at the inside heat conductivity of bin, make the even better pyrohydrolysis of material heating, the iron powder can improve the decomposition rate of organic matter among the anaerobic fermentation process simultaneously, promotes the organic matter and turns into methane, can also alleviate the acid suppression phenomenon, improves subsequent treatment effeciency.
Optionally, a feeding inlet of the anaerobic fermentation device is connected with a discharging port of the grinding material bin through a connecting pipe, a stirring device is arranged inside the anaerobic fermentation device, the stirring device comprises a second motor and a stirrer, a ventilation conduit for introducing nitrogen is further arranged on the upper portion of the anaerobic fermentation device, an exhaust port is arranged on the upper portion of the side face of the anaerobic fermentation device, and a liquid discharge port is arranged on the lower portion of the side face of the anaerobic fermentation device. The heated materials in the grinding material bin can directly enter the anaerobic fermentation chamber to perform further anaerobic digestion reaction by the pressure of the feeding pump, certain nitrogen can be introduced into the ventilation pipeline at the beginning of the reaction to ensure the anaerobic condition in the bin, the generated gas is discharged from the exhaust port after the materials are subjected to sufficient anaerobic fermentation decomposition in the fermentation bin, and the decomposed organic matter residues can be discharged from the liquid discharge port to ensure that the materials are thoroughly and fully reacted.
Optionally, the heat cyclic utilization device includes air exhaust fan, ring pipe and conduction pipe, air exhaust fan set up the one end at material modification device, be connected with the ring pipe through the conduction pipe, the ring pipe inlay in anaerobic fermentation device's inside, cool off the hot-blast ring pipe that air exhaust fan took out, heat the inside material of anaerobic fermentation device simultaneously for the material in the anaerobic fermentation device maintains the uniform temperature, fermentation temperature sets up at 40-50 ℃. Because a large amount of hot steam generated by electromagnetic heating in the modification device overflows, the hot steam is pumped out by the air exhaust fan, hot air pumped by the air exhaust fan is cooled by the annular pipe, and meanwhile, materials in the anaerobic fermentation device can be heated, so that the materials in the anaerobic fermentation device are maintained at a certain temperature, and the fermentation temperature is generally set to be 40-50 ℃.
Optionally, the feeding pump pumps out the materials in the storage hopper through the connecting pipe, and after the materials enter the grinding material bin for modification, the materials are pressed out from the discharge port of the grinding material bin and enter the anaerobic fermentation device for fermentation treatment. The grinding material bin adopts a cylindrical closed structure, so that free flow of materials can be facilitated, meanwhile, overflow of a large amount of heat is reduced, and heating efficiency is improved.
Optionally, the method adopted by the invention includes that the kitchen waste enters the crushing device firstly to be crushed preliminarily, large particles are changed into small particles, the small particles enter the storage hopper to be stored temporarily so as to balance the treatment speed of the crushing device and the speed of the subsequent flow, then the small particles enter the material modification device through the feeding pump, the kitchen waste is subjected to magnetic field and grinding treatment in the material modification device, iron powder enters the material modification device through the iron powder feeding device to promote the modification of the kitchen waste, the modified kitchen waste enters the anaerobic fermentation device to be subjected to anaerobic fermentation to form organic fertilizer, meanwhile, high-temperature gas in the material modification device is introduced into the anaerobic fermentation device through a pipeline, and the temperature required by the anaerobic fermentation is ensured.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, after the kitchen waste is pretreated by the electromagnetic field, harmful microorganisms in the kitchen waste are killed, so that the living environment of the inoculated microorganisms is improved, the interspecific competition of the inoculated microorganisms is reduced, the gas production is improved, and the fermentation efficiency of organic matters is improved;
the kitchen waste treatment equipment can greatly improve the reduction and harmless treatment of the kitchen waste through mechanical grinding, electromagnetic high-temperature hydrolysis pretreatment and subsequent anaerobic fermentation treatment.
The mode of mechanical crushing and grinding and electromagnetic eddy current synergistic effect is adopted, the fermentation decomposition rate of the kitchen materials can be greatly improved, the magnetic force field is generated by passing current through an electromagnetic induction coil in the heating process, magnetic force lines in the magnetic force field act on the grinding material bin, polar molecules such as protein, fat and moisture generate violent and ordered resonance and high-speed motion, tens of thousands of magnetic hysteresis eddy currents are generated, and huge circulating energy generated by the eddy currents is converted into effective heat energy to directly heat and act on the grinding material bin. Because polar molecules are heated by the electromagnetic eddy current to form dense and randomly moving electromagnets, in the electromagnetic eddy current, the impact and the grinding can hydrolyze material particles, so that the fermentation efficiency of organic matters in the subsequent fermentation process can be greatly improved, the heating speed is high, and the thermal efficiency is high.
Drawings
FIG. 1 is a schematic diagram of the general structure of a kitchen waste treatment device;
FIG. 2 is a schematic diagram of the internal mechanism of an anaerobic fermentation device of the kitchen waste treatment device;
FIG. 3 is a schematic view of the inside of an annular pipe inside an anaerobic fermentation apparatus;
FIG. 4 is a schematic view of the interior of the housing of the material modification apparatus;
FIG. 5 is a schematic view of the interior of the abrasive bin;
FIG. 6 is a schematic view showing the distribution of steel nails in the section of the rotating shaft.
As shown in the figure, the device comprises a machine frame 1, a machine frame 2, a storage bin 3, a crushing device 4, a rotating motor 5, a storage hopper 6, a connecting pipe 7, a feeding pump 8, a dosing and feeding device 9, an air exhaust fan 11, an electric controller 10, an anaerobic fermentation device 12, a modification device 13, a ring pipe 10-1, a second motor 10-2, an air duct 10-3, a stirrer 10-4, an air exhaust port 10-5, a liquid discharge port 12-1, a speed reducer 12-2, a first motor 12-3, a grinding material bin 12-4, an electromagnetic coil 12-5, a feeding port 12-6, a rotating shaft 12-7, a steel nail 12-8, a discharge port 12-9 and a bearing.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and embodiments.
As shown in fig. 1-6, the kitchen waste treatment method of the embodiment is based on a kitchen waste treatment device, the kitchen waste treatment device includes a frame 1, a bin 2 disposed above the frame 1, a crushing device disposed below the bin 2, a crushing bin 3 disposed below the crushing device, a rotating motor 4 connected to a rotating shaft 12-6, a storage hopper 5 disposed below the crushing device, a feeding pump 7 disposed below the storage hopper 5 and connected to the feeding pump 7 through a connecting pipe 6, a box 12 disposed below the feeding pump 7, and an anaerobic fermentation device 10 disposed below the box 12. Kitchen materials enter the storage bin 2 and fall into the crushing device, the materials after crushing treatment of the crushing device are temporarily stored in the storage bin 2, after a certain amount of materials are obtained, the feeding pump 7 below the storage bin 2 pumps the crushed materials into the grinding material bin 12-3 inside the modification device 12, the crushed materials are milled again in the grinding material bin 12-3, the materials in the grinding material bin 12-3 are fully milled and stirred by the steel nails 12-7, meanwhile, high-temperature hydrolysis reaction is carried out under the action of electromagnetic heating inside the sub-grinding material bin 12-3, after the full reaction is finished, the materials are fed into the discharge port 12-8 under the action of the feeding pressure of the feeding pump 7 and then enter the anaerobic fermentation device 10 below the modification device 12, and subsequent full anaerobic fermentation treatment is carried out.
In this embodiment, the material modification device 12 includes a material fine grinding device, an iron powder adding device 8, and an electromagnetic eddy current generating device. The materials are subjected to the fine grinding in a grinding material bin 12-3, the electromagnetic eddy current heating and the iron powder adding, the uniform heating and modification treatment, and then the materials enter an anaerobic fermentation device for subsequent fermentation treatment.
In the embodiment, the material fine grinding device comprises an abrasive bin 12-3, a speed reducer 12-1 and a first motor 12-2, a feeding hole 12-5 is formed in the upper end of the abrasive bin 12-3, materials enter the feeding hole 12-5 through a connecting pipe 6 under the action of a feeding pump 7 and enter the abrasive bin 12-3 through the feeding hole 12-5 through an upper inlet of a modifying device 12, the first motor and the speed reducer drive a rotating shaft to rotate, and steel nails on the rotating shaft grind and stir the materials in the bin, so that the size of material particles is greatly reduced, and the subsequent fermentation hydrolysis efficiency is improved.
In this example, the electromagnetic eddy current generating device comprises an electromagnetic coil 12-4, an alternating current power supply and an abrasive bin 12-3, the electromagnetic coil is tightly wound on the abrasive bin 12-3, the alternating current power supply is connected to two ends of the electromagnetic coil 12-4, an insulating material is coated outside the electromagnetic coil, the electromagnetic eddy current generating device generates electromagnetic eddy current, cell molecular structures are damaged, the temperature of materials in a cavity is increased, and hydrolysis of kitchen waste is promoted.
In this embodiment, the iron powder adding device 8 is arranged above the grinding material bin 12-3, iron powder can be automatically added into the grinding material bin 12-3 through the iron powder adding device 8, the iron powder uniformly enters the material under the stirring of the device in the grinding material bin 12-3, the magnetism of a magnetic field is enhanced, meanwhile, the internal heat diffusion of the material is facilitated, the material is favorably modified better, the efficiency of a subsequent anaerobic fermentation stage is improved, the adding amount of the iron powder is determined according to the following steps, and the volume ratio of the iron powder to the kitchen waste is as follows: 5-8g of iron powder is added into each liter of kitchen waste.
In the embodiment, a feeding inlet of the anaerobic fermentation device 10 is connected with a discharging port 12-8 of a grinding material bin 12-3 through a connecting pipe 6, a stirring device is arranged inside the anaerobic fermentation device 10 and comprises a second motor 10-1 and a stirrer 10-3, after a certain amount of materials are stored inside the anaerobic fermentation device 10, the second motor 10-1 drives the stirrer 10-3 to uniformly stir the materials inside the bin, meanwhile, a ventilation conduit 10-2 for introducing nitrogen is arranged at the upper part of the bin to ensure anaerobic fermentation anaerobic conditions inside the bin, an exhaust port 10-4 arranged on the side face can exhaust gas in reaction, and after the materials are decomposed through sufficient anaerobic fermentation, a liquid discharge port 10-5 below the side face is opened to discharge the reaction materials.
In this embodiment, the heat recycling device includes an air extractor 9, a ring pipe 13, and a conduction pipe, the air extractor 9 is disposed at one end of the material modification device 12 and connected to the ring pipe 13 through the conduction pipe, the ring pipe 13 is embedded inside the anaerobic fermentation device 10, hot air in the material modification device 12 is extracted by the air extractor 9 and enters the ring pipe 13 for cooling, meanwhile, the hot air can heat the material inside the anaerobic fermentation device 10 through the ring pipe 13, so that the material inside the anaerobic fermentation device 10 is maintained at a certain temperature, and the fermentation temperature is generally set at 40-50 ℃.
In this example, the material modification device 12 at the feeding port 12-5 is connected with the feeding pump 7 through the connecting pipe 6, the feeding pump 7 pumps out the material in the material storage hopper 5 through the connecting pipe 6, and the material enters the grinding material bin 12-3 for modification and grinding, and then the material is extruded from the discharging port 12-8 of the grinding material bin 12-3 and enters the anaerobic fermentation device 10 for fermentation treatment.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. A kitchen waste treatment method is characterized by comprising the following steps: the method comprises the following steps: the kitchen waste enters a crushing device (3) firstly and is primarily crushed, large particles are changed into small particles, then the small particles enter a storage hopper (5) for temporary storage, so that the processing speed of the crushing device and the speed of a subsequent process are balanced, then the small particles enter a material modification device (12) through a feeding pump (7), the kitchen waste is subjected to magnetic field and grinding treatment in the material modification device (12), iron powder enters the material modification device (12) through an iron powder adding device (8) to promote the modification of the kitchen waste, the modified kitchen waste enters an anaerobic fermentation device (10) to be subjected to anaerobic fermentation to form organic fertilizer, and meanwhile, high-temperature gas in the material modification device is introduced into the anaerobic fermentation device (10) through a pipeline to ensure the temperature required by the anaerobic fermentation;
the kitchen waste treatment method is based on a kitchen waste treatment device, the kitchen waste treatment device comprises a rack (1), a storage bin (2) arranged above the rack (1), a crushing device (3) arranged below the storage bin (2), a rotating motor (4), a storage hopper (5), a connecting pipe (6), a feeding pump (7), an anaerobic fermentation device (10) and an electric controller (11), the storage hopper (5) is positioned below the crushing device (3), the kitchen waste treatment device also comprises a material modification device (12) and a heat recycling device, the storage hopper (5) is communicated with the material modification device (12) through a connecting pipe (6) and a feed pump (7), the anaerobic fermentation device (10) is positioned at the rear end of the material modification device (12), the heat recycling device is used for communicating the material modification device (12) with the anaerobic fermentation device (10);
the material modification device (12) comprises a material fine grinding device, an iron powder adding device (8) and an electromagnetic eddy current generating device;
the material fine grinding device comprises a grinding material bin (12-3), a speed reducer (12-1) and a first motor (12-2), wherein a feeding hole (12-5) is formed in the upper end of the grinding material bin (12-3), the feeding hole (12-5) is connected with a connecting pipe (6) through an upper inlet of a box body, a discharging hole (12-8) is formed in the lower end of the grinding material bin (12-3), the discharging hole (12-8) is connected with a discharging pipe through a lower outlet of the grinding material bin (12-3), the speed reducer (12-1) and the first motor (12-2) are connected to one side of the grinding material bin (12-3), a bearing (12-9) connected with a rotating shaft is fixed to the other side of the grinding material bin, the output end of the speed reducer (12-1) is connected with the rotating shaft (12-6) horizontally arranged in the grinding material bin (12-3), the steel nails (12-7) are uniformly distributed on the rotating shaft, and the materials are ground under the action of the first motor (12-2) and the speed reducer (12-1);
the electromagnetic eddy current generating device comprises an electromagnetic coil (12-4), an alternating current power supply and an abrasive bin (12-3), wherein the electromagnetic coil is tightly wound on the abrasive bin (12-3), the two ends of the electromagnetic coil (12-4) are connected with the alternating current power supply, an insulating material is coated outside the electromagnetic coil, the electromagnetic eddy current generating device generates electromagnetic eddy current, the cell molecular structure is damaged, the temperature of materials in the cavity is increased, and the hydrolysis of kitchen waste is promoted;
the iron powder adding device (8) is arranged above the grinding material bin (12-3), the iron powder can be automatically added into the grinding material bin (12-3) through the iron powder adding device (8), the iron powder uniformly enters the material under the stirring of the device in the grinding material bin (12-3), the magnetism of a magnetic field is enhanced, meanwhile, the internal heat diffusion of the material is facilitated, the better modification of the material is facilitated, the efficiency of a subsequent anaerobic fermentation stage is improved, the adding amount of the iron powder is determined according to the following steps, and the volume ratio of the iron powder to the kitchen waste is as follows: 5-8g of iron powder is added into each liter of kitchen waste.
2. The kitchen waste treatment method according to claim 1, characterized in that: the grinding material bin is characterized in that a feeding inlet of the anaerobic fermentation device (10) is connected with a discharging port (12-8) of the grinding material bin (12-3) through a connecting pipe (6), a stirring device is arranged inside the anaerobic fermentation device (10), the stirring device comprises a second motor (10-1) and a stirrer (10-3), a ventilation guide pipe (10-2) used for introducing nitrogen is further arranged on the upper portion of the anaerobic fermentation device (10), an exhaust port (10-4) is arranged on the upper portion of the side face of the anaerobic fermentation device (10), and a liquid discharging port (10-5) is arranged on the lower portion of the side face.
3. The kitchen waste treatment method according to claim 2, characterized in that: the heat cyclic utilization device comprises an air exhaust fan (9), a ring pipe (13) and a conduction pipe, wherein the air exhaust fan (9) is arranged at one end of a material modification device (12) and is connected with the ring pipe (13) through the conduction pipe, the ring pipe (13) is embedded in an anaerobic fermentation device (10), hot air exhausted by the air exhaust fan (9) is cooled through the ring pipe (13), meanwhile, the material in the anaerobic fermentation device (10) is heated, so that the material in the anaerobic fermentation device (10) is maintained at a certain temperature, and the fermentation temperature is set to be 40-50 ℃.
4. The kitchen waste treatment method according to claim 3, characterized in that: the feeding pump (7) pumps out the materials in the storage hopper (5) through the connecting pipe (6), the materials enter the grinding material bin (12-3) for modification, and then the materials are pressed out from the discharge hole (12-8) of the grinding material bin (12-3) and enter the anaerobic fermentation device (10) for fermentation treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010287275.3A CN111389872B (en) | 2020-04-13 | 2020-04-13 | Kitchen waste treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010287275.3A CN111389872B (en) | 2020-04-13 | 2020-04-13 | Kitchen waste treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111389872A CN111389872A (en) | 2020-07-10 |
| CN111389872B true CN111389872B (en) | 2022-01-11 |
Family
ID=71416803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010287275.3A Expired - Fee Related CN111389872B (en) | 2020-04-13 | 2020-04-13 | Kitchen waste treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111389872B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111299308A (en) * | 2020-04-13 | 2020-06-19 | 饶宾期 | Kitchen waste treatment device |
| CN113278514B (en) * | 2021-03-31 | 2022-09-09 | 中国科学院城市环境研究所 | Kitchen waste treatment device and method for improving dry anaerobic fermentation effect |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1099767A1 (en) * | 1999-05-06 | 2001-05-16 | Ken Kansa | Method and device for induction-heating and melting metal oxides-containing powder and granular material |
| JP2004209339A (en) * | 2002-12-27 | 2004-07-29 | Hitachi Zosen Corp | Pyrolysis apparatus of waste |
| CN101831290A (en) * | 2009-03-10 | 2010-09-15 | 北京有色金属研究总院 | Continuous and dynamic reduction device and method of fluorescent powder |
| CN105983569A (en) * | 2015-02-11 | 2016-10-05 | 李泽唐 | Magnetic separation enhanced type electromagnetic thermal desorption method and device for remediating soil |
| CN108580520A (en) * | 2018-05-22 | 2018-09-28 | 北京建筑大学 | A kind of small and medium-sized cities Comsumer Waste Sorting Treatment System and method |
| CN110355186A (en) * | 2019-07-22 | 2019-10-22 | 派腾奥普科技服务（北京）有限公司 | Resident's rubbish from cooking pretreatment unit |
-
2020
- 2020-04-13 CN CN202010287275.3A patent/CN111389872B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1099767A1 (en) * | 1999-05-06 | 2001-05-16 | Ken Kansa | Method and device for induction-heating and melting metal oxides-containing powder and granular material |
| JP2004209339A (en) * | 2002-12-27 | 2004-07-29 | Hitachi Zosen Corp | Pyrolysis apparatus of waste |
| CN101831290A (en) * | 2009-03-10 | 2010-09-15 | 北京有色金属研究总院 | Continuous and dynamic reduction device and method of fluorescent powder |
| CN105983569A (en) * | 2015-02-11 | 2016-10-05 | 李泽唐 | Magnetic separation enhanced type electromagnetic thermal desorption method and device for remediating soil |
| CN108580520A (en) * | 2018-05-22 | 2018-09-28 | 北京建筑大学 | A kind of small and medium-sized cities Comsumer Waste Sorting Treatment System and method |
| CN110355186A (en) * | 2019-07-22 | 2019-10-22 | 派腾奥普科技服务（北京）有限公司 | Resident's rubbish from cooking pretreatment unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111389872A (en) | 2020-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111389872B (en) | Kitchen waste treatment method | |
| CN103627621B (en) | Solid-state vertical type fermentation, self-circulation cooling, distillation integrated apparatus and method | |
| CN111299308A (en) | Kitchen waste treatment device | |
| CN106955889A (en) | The innoxious apparatus for continuous treatment of dead livestock and poultry | |
| CN1290631C (en) | Resources comprehensive treatment technology for organic waste material | |
| CN213033244U (en) | Kitchen waste treatment device | |
| CN212397607U (en) | Kitchen waste treatment system | |
| CN214108271U (en) | High-temperature drying equipment for harmless treatment | |
| CN201644395U (en) | Composite outer classifier | |
| CN112794743A (en) | Dry-type aerobic fermentation equipment for kitchen garbage | |
| WO2019044996A1 (en) | Apparatus and method for producing fuel by fermenting and drying object to be treated | |
| CN203711464U (en) | Dead pig innocent treatment complete equipment | |
| CN203461980U (en) | Small fowl corpse processing machine | |
| CN106698879A (en) | Kitchen waste treatment method | |
| CN217265668U (en) | Fermentation mechanism of kitchen waste disposal all-in-one machine | |
| TWI362299B (en) | ||
| JP5230243B2 (en) | Method and system for methane fermentation treatment of organic waste | |
| CN206418041U (en) | A kind of continuous composting device of organic waste | |
| CN203043985U (en) | Microwave spiral tire pyrolysis equipment | |
| CN206229828U (en) | Vertical shaft type dead livestock and poultry harmless processor | |
| CN215049737U (en) | Stirring device of dry-type aerobic fermentation equipment for kitchen garbage | |
| CN112794588B (en) | Method for efficiently stabilizing heavy metals in animal manure biochar | |
| CN104001710A (en) | Biochemical treatment equipment for kitchen waste | |
| CN114226419A (en) | Organic garbage aerobic fermentation equipment and process | |
| CN211896594U (en) | Sludge thermal decomposition furnace with built-in double furnace bodies |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211217 Address after: 310018 No. 258, Xueyuan street, Xiasha Higher Education Park, Qiantang District, Hangzhou City, Zhejiang Province Applicant after: China Jiliang University Address before: 315470 126 Guangming Road, Simen Town, Yuyao City, Ningbo, Zhejiang Applicant before: Rao Binqi |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220111 |