CN112605106A - Kitchen waste aerobic fermentation reduction treatment system and treatment method thereof - Google Patents
Kitchen waste aerobic fermentation reduction treatment system and treatment method thereof Download PDFInfo
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- CN112605106A CN112605106A CN202011602854.9A CN202011602854A CN112605106A CN 112605106 A CN112605106 A CN 112605106A CN 202011602854 A CN202011602854 A CN 202011602854A CN 112605106 A CN112605106 A CN 112605106A
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 239000010806 kitchen waste Substances 0.000 title claims abstract description 33
- 238000010564 aerobic fermentation Methods 0.000 title claims abstract description 26
- 230000009467 reduction Effects 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 73
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 48
- 239000012535 impurity Substances 0.000 claims abstract description 17
- 238000007885 magnetic separation Methods 0.000 claims abstract description 11
- 239000000126 substance Substances 0.000 claims abstract description 9
- 239000003895 organic fertilizer Substances 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 238000012216 screening Methods 0.000 claims abstract description 6
- 150000002739 metals Chemical class 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 18
- 244000005700 microbiome Species 0.000 claims description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 16
- 229910052760 oxygen Inorganic materials 0.000 claims description 16
- 239000001301 oxygen Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000001125 extrusion Methods 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 13
- 239000002893 slag Substances 0.000 claims description 13
- 238000000855 fermentation Methods 0.000 claims description 9
- 230000004151 fermentation Effects 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 9
- 238000000354 decomposition reaction Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 7
- 239000002351 wastewater Substances 0.000 claims description 7
- 238000004065 wastewater treatment Methods 0.000 claims description 7
- 238000005273 aeration Methods 0.000 claims description 6
- 230000018044 dehydration Effects 0.000 claims description 6
- 238000006297 dehydration reaction Methods 0.000 claims description 6
- 238000004659 sterilization and disinfection Methods 0.000 claims description 6
- 239000004519 grease Substances 0.000 claims description 4
- 239000003864 humus Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 230000000750 progressive effect Effects 0.000 claims description 4
- 230000001954 sterilising effect Effects 0.000 claims description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000006148 magnetic separator Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 239000003337 fertilizer Substances 0.000 abstract description 7
- 239000005416 organic matter Substances 0.000 abstract description 3
- 239000002689 soil Substances 0.000 abstract description 3
- 238000012271 agricultural production Methods 0.000 abstract description 2
- 230000035558 fertility Effects 0.000 abstract description 2
- 239000010865 sewage Substances 0.000 description 9
- 239000002002 slurry Substances 0.000 description 4
- 239000010794 food waste Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
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- 239000002028 Biomass Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
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- 238000004064 recycling Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 241000219112 Cucumis Species 0.000 description 1
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 239000003225 biodiesel Substances 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 239000008162 cooking oil Substances 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 235000013305 food Nutrition 0.000 description 1
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Images
Classifications
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- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F9/00—Fertilisers from household or town refuse
- C05F9/02—Apparatus for the manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B2101/00—Type of solid waste
- B09B2101/02—Gases or liquids enclosed in discarded articles, e.g. aerosol cans or cooling systems of refrigerators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kitchen waste aerobic fermentation reduction disposal system and a disposal method thereof, wherein the method comprises the following steps: firstly, pretreating kitchen garbage, and obtaining garbage materials to be fermented through a material receiving hopper; secondly, coarsely crushing the garbage materials finally obtained in the first step, and crushing different bagged garbage materials; thirdly, performing magnetic separation on the garbage materials finally obtained in the second step to separate out metals in the garbage materials; fourthly, screening the garbage materials finally obtained in the third step for large impurities, and removing the large impurities which can not be processed in the garbage materials through a full-automatic sorting system; the kitchen waste is recycled to the maximum extent, the organic fertilizer produced by the system method can be used as a base fertilizer and an additional fertilizer for crops, the using amount of the chemical fertilizer can be supplemented and reduced, the soil is improved, the organic matter content and the fertility are improved, the agricultural production cost is reduced, and the yield and the quality of the crops are improved.
Description
Technical Field
The invention belongs to the relevant technical field of kitchen waste reduction comprehensive treatment, and particularly relates to a kitchen waste aerobic fermentation reduction treatment system and a treatment method thereof.
Background
The pretreatment of the kitchen waste adopts the processes of unloading, rough crushing, magnetic separation, large sundry screening, extrusion dehydration and desanding, the kitchen waste is conveyed to a crusher by a double-screw conveyor after being unloaded and is crushed, a leachate part enters a desanding unit, the kitchen waste after being unloaded and crushed enters a magnetic separation unit to separate metal substances, then screened objects with the size of less than 100mm are obtained after being separated by a drum screen, the screened kitchen waste enters a screw extrusion dehydration unit, pressed solid slag enters a rear-end system, and the pressed organic slurry enters a sewage treatment system after desanding and impurity removal and is pumped to the sewage treatment system.
The prior art of the kitchen waste aerobic fermentation reduction disposal system and the disposal method thereof has the following problems: 1. according to the domestic garbage classification management method and the specification of China, kitchen waste is perishable components generated by domestic garbage classification, the generation source of the kitchen waste is resident families, according to the development process and the current situation of domestic garbage classification of China, the domestic garbage classification effect in most of cities is not obvious at present, and the kitchen waste is particularly characterized by low purity, in addition, the kitchen waste derived from residents at the present stage is characterized in that the kitchen waste is bagged and sealed completely, is not beneficial to subsequent impurity removal, screening and magnetic separation processes, and needs to be subjected to corresponding measures in a pretreatment link.
2. Kitchen waste can produce the sewage of bad smell when collecting the processing, need collect the centralized processing through the pipeline with the sewage that produces in the whole refuse handling process, but in the transportation in sewage can the impurity attached to the inner wall of sewage pipe, these impurity from the outside is difficult to clear up totally, and the time is long can distribute out bad smell influence use from the pipeline inside.
Disclosure of Invention
The invention aims to provide a kitchen waste aerobic fermentation reduction treatment system and a treatment method thereof, which solve the problems that the classification treatment of the kitchen waste is relatively troublesome and residual impurities are inconvenient to clean on the inner wall of a sewage pipe to generate unpleasant smell when conveyed sewage is treated in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a kitchen waste aerobic fermentation reduction treatment method comprises the following steps:
firstly, pretreating kitchen garbage, and obtaining garbage materials to be fermented through a material receiving hopper;
secondly, coarsely crushing the garbage materials finally obtained in the first step, and crushing different bagged garbage materials;
thirdly, performing magnetic separation on the garbage materials finally obtained in the second step to separate out metals in the garbage materials; removing grease by a water washing process, wherein the water washing temperature is 20-100 ℃, and the water washing time is 15-40 minutes;
fourthly, screening the garbage materials finally obtained in the third step for large impurities, and removing the large impurities which can not be processed in the garbage materials through a full-automatic sorting system;
fifthly, squeezing and dehydrating the washed garbage materials, squeezing out organic slag through a squeezing dehydrator, feeding the organic slag into a section treatment system of a mixing bin, and adjusting water content to 55-65%;
sixthly, discharging the odor treated in the step into an odor treatment system through an exhaust pipe for treatment, and sending the wastewater obtained in the step into a wastewater treatment system for treatment through a self-cleaning drain pipe after the wastewater is subjected to desanding treatment;
and seventhly, deeply decomposing the organic slag finally obtained in the fifth step, replacing thermophilic microorganisms with the thermophilic microorganisms for further decomposition in the process, adding 0.8-1.2 kilograms of thermophilic microorganisms into 1 ton of organic slag, continuously increasing and stabilizing humus, arranging a forced aeration device in the sixth step, cooling the required materials, forcibly providing oxygen for the microorganisms, controlling the oxygen content of a fermentation bin to be 2-5ppm, controlling the fermentation temperature to be 55-75 ℃, controlling the fermentation time to be 15-35 days, performing air separation and magnetic separation on the fermented materials again to remove recyclable substances after drying sterilization or ozone sterilization, and finally preparing the organic fertilizer.
Preferably, the extrusion dehydrator adopts a double spiral channel for extrusion dehydration.
Preferably, the material receiving hopper is driven by hydraulic power through a matched double-screw conveyor, and when the material is blocked, the material receiving hopper can automatically rotate reversely and give an alarm for prompting.
Preferably, an air supply system is arranged in the section treatment system, and the air supply system is provided with four roots fans.
Preferably, the section treatment system is internally provided with turning and pushing equipment, and the turning equipment adopts a chain plate type progressive turning method.
The utility model provides a kitchen remains rubbish aerobic fermentation minimizing processing system, includes automatically cleaning drain pipe and collecting pit, the output of automatically cleaning drain pipe and the input of collecting pit are connected, the output of collecting pit is connected with effluent disposal system, the input of automatically cleaning drain pipe is connected with connects the material hopper, it is connected with the exhaust tube to connect the material hopper, the exhaust tube is connected with odor treatment system, the input that connects the material hopper is connected with the breaker, the input of breaker is connected with the feeder, be equipped with the magnet separator on the feeder, the input of feeder is connected with full-automatic sorting system, the output of full-automatic sorting system is connected with the extrusion hydroextractor, the output of extrusion hydroextractor is connected with aerobic fermentation storehouse.
As preferred, the automatically cleaning drain pipe includes body and lead screw, the inside of body is provided with the lead screw, the inside adapter sleeve that is fixed with of one end of body, the one end of lead screw is rotated and is set up the inside at the adapter sleeve, the fixed disk has been cup jointed to the outside of lead screw, the friction cover has been cup jointed to the outside of fixed disk, the outer wall of friction cover and the inner wall laminating of body, the counterpoint groove has been seted up to the upper end inside of body, be fixed with the connecting block on the upper end outer wall of fixed disk, the connecting block passes the friction cover and sets up the inside at the counterpoint groove, be fixed with driving motor on the upper end outer wall of body, driving motor's output has cup jointed the drive belt, the other end of drive belt cup joints at the lead screw outside, the delivery port has been seted.
Compared with the prior art, the invention provides a kitchen waste aerobic fermentation reduction disposal system and a disposal method thereof, and the system has the following beneficial effects:
the section treatment system can deeply decompose kitchen garbage, thermophilic microorganisms are used for replacing the thermophilic microorganisms to further decompose the kitchen garbage in the process, humus is continuously increased and tends to be stable, a forced aeration device is arranged in the process and equipment, the forced aeration device adopts a sectional type adjustable aeration device to cool required materials and forcibly provide oxygen for the microorganisms, the equipment provides superior conditions for fast decomposition of organic materials to complete the whole process of decomposition of the organic materials, the section treatment system automatically operates according to set values by a control system for turning over and supplying oxygen, 4 Roots fans are arranged in an air supply system, oxygen is supplied according to different stages of oxygen demand in the fermentation process, the fans are respectively controlled to meet the oxygen demand of each stage, the turning over equipment adopts a chain plate type progressive turning over method, so that the materials are automatically transferred backwards and are exchanged up and down, in the process of turning the pile, the materials are fully contacted with oxygen, so that oxygen supply dead corners are prevented from being generated, and an anaerobic zone is formed;
the aerobic fermentation bin provided by the invention is totally enclosed, the high-quality biomass organic fertilizer produced by the system is detected by a third-party detection company and is far superior to the related standards of organic fertilizers specified by the state, kitchen waste is recycled to the maximum extent, the biomass organic fertilizer produced by the aerobic fermentation bin can be used as a base fertilizer for soil improvement and empty crops, the process and the use amount of chemical fertilizers can be supplemented and reduced, the soil is improved, the organic matter content and the fertility are improved, the agricultural production cost is reduced, the crop yield and quality are improved, and the safe production of grains and the green production of melons, fruits and vegetables are realized. The organic fertilizer is prepared from kitchen garbage, is an excellent way for realizing comprehensive utilization of resources and zero pollution emission in the production link, is a derivative product except the organic fertilizer, increases the recycling of recycled plastics and metal substances and biolipid oil, is industrial raw oil as a scarce chemical raw material, can be widely applied to industries such as daily chemical industry, grease chemical industry and biodiesel, has higher economic added value, and can solve the problem of 'illegal cooking oil' flowing back to a dining table from the source.
Third, can be with the adnexed impurity clean up of drain pipe inside through the automatically cleaning drain pipe, prevent that the drain pipe from using the inner wall for a long time and attaching a large amount of impurity, produce the bad smell influence and use for the use of drain pipe becomes cleaner.
The equipment related to the invention is the existing equipment which can be directly purchased in the market, and the functions required by crushing, sorting and the like can be realized. The method of the invention can be carried out by adopting the existing method in the field without any specific method for the process steps and process parameters which are not recorded.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:
FIG. 1 is a schematic flow chart of an aerobic fermentation and reduction treatment method for kitchen waste according to the present invention;
FIG. 2 is a schematic structural diagram of an aerobic fermentation and reduction treatment system for kitchen waste according to the present invention;
FIG. 3 is a schematic structural view of the self-cleaning drain pipe according to the present invention;
in the figure: 1-self-cleaning drain pipe; 2-a collection tank; 3-a wastewater treatment system; 4-material receiving hopper; 5-an air exhaust pipe; 6-odor treatment system; 7-a crusher; 8-a feeder; 9-a magnetic separator; 10-a full automatic sorting system; 11-extruding and dewatering machine; 12-aerobic fermentation chamber; 101-a screw rod; 102-fixed disk; 103-a friction sleeve; 104-water outlet; 105-a conveyor belt; 106-connecting block; 107-driving motor; 108-a tubular body; 109-alignment groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a kitchen waste aerobic fermentation reduction treatment method comprises the following steps:
the method comprises the following steps that firstly, kitchen garbage is pretreated, garbage materials to be fermented are obtained through a material receiving hopper, the material receiving hopper is driven by hydraulic power through a matched double-screw conveyor, when the phenomenon of material blockage occurs, the material receiving hopper can automatically rotate reversely and give an alarm to prompt, the material blockage is prevented, and the problem that domestic food and beverage garbage is easy to block is effectively solved;
secondly, coarsely crushing the garbage materials finally obtained in the first step, and crushing different bagged garbage materials;
thirdly, performing magnetic separation on the garbage materials finally obtained in the second step to separate out metals in the garbage materials;
fourthly, screening the garbage materials finally obtained in the third step for large impurities, and removing the large impurities which can not be processed in the garbage materials through a full-automatic sorting system; adding a water washing process between the third step and the fourth step to remove grease, wherein the water washing temperature is 20-100 ℃, and the water washing time is 15-40 minutes;
and fifthly, extruding and dehydrating the washed garbage materials, squeezing out organic slag through an extruding and dehydrating machine, feeding the organic slag into a mixing bin, and adjusting the water content to 55-65%.
Sixthly, discharging the odor treated in the step into an odor treatment system through an exhaust pipe for treatment, and sending the wastewater obtained in the step into a wastewater treatment system for treatment through a self-cleaning drain pipe after the wastewater is subjected to desanding treatment;
and seventhly, deeply decomposing the organic slag finally obtained in the fifth step, adopting mesophilic microorganisms to replace the thermophilic microorganisms to further decompose in the process, adding 0.8-1.2 kg of the mesophilic microorganisms into 1 ton of the organic slag, fermenting at 55-75 ℃ for 15-35 days, carrying out drying disinfection or ozone disinfection again on the fermented material, carrying out air separation and magnetic separation again to remove recyclable substances, and finally preparing the organic fertilizer. The solid phase materials are deeply processed in the processing system to obtain organic fertilizers, the section processing system is internally provided with an air supply system, the air supply system is provided with four Roots fans, oxygen is supplied by stages according to different oxygen demands in the fermentation process, each fan is respectively used for controlling the oxygen demand meeting each stage, the oxygen content of the fermentation bin is 2-5ppm, the section processing system is internally provided with turning and pushing equipment, and the turning equipment adopts a chain plate type progressive turning method to ensure that the materials are exchanged up and down while being automatically transferred backwards.
As shown in fig. 2-3, a kitchen waste aerobic fermentation and reduction disposal system comprises a self-cleaning drain pipe 1 and a collecting tank 2, the output end of the self-cleaning drain pipe 1 is connected with the input end of the collecting tank 2, the output end of the collecting tank 2 is connected with a wastewater treatment system 3, the input end of the self-cleaning drain pipe 1 is connected with a material receiving hopper 4, the material receiving hopper 4 is connected with an exhaust pipe 5, the air exhaust pipe 5 is connected with an odor treatment system 6, the input end of the material receiving hopper 4 is connected with a crusher 7, the input end of the crusher 7 is connected with a feeder 8, the feeder 8 is provided with a magnetic separator 9, the input end of the feeder 8 is connected with a full-automatic sorting system 10, the output end of the full-automatic sorting system 10 is connected with an extrusion dehydrator 11, and the output end of the extrusion dehydrator 11 is connected with an aerobic fermentation bin 12.
The self-cleaning drain pipe comprises a pipe body 108 and a screw rod 101, wherein the screw rod 101 is arranged in the pipe body 108, a connecting sleeve is fixed in one end of the pipe body 108, one end of the screw rod 101 is rotatably arranged in the connecting sleeve, a fixed disc 102 is sleeved outside the screw rod 101, a friction sleeve 103 is sleeved outside the fixed disc 102, the outer wall of the friction sleeve 103 is attached to the inner wall of the pipe body 108, an alignment groove 109 is formed in the upper end of the pipe body 108, a connecting block 106 is fixed on the outer wall of the upper end of the fixed disc 102, the connecting block 106 penetrates through the friction sleeve 103 and is arranged in the alignment groove 109, a transmission motor 107 is fixed on the outer wall of the upper end of the pipe body 108, the output end of the transmission motor 107 is sleeved with a transmission belt 105, the other end of the transmission belt 105 is sleeved outside the screw rod 101, and, the transmission motor 107 is electrically connected with an external power supply.
Through the automatically cleaning drain pipe can lead to the adnexed impurity clean up on 8 inner walls of body, prevent that body 8 from leading to inside dirty stink that produces because of carrying sewage for a long time.
The invention has the following use process:
food waste enters a factory and is monitored by an automatic control system, the food waste enters an unloading hall after weighing, swiping and recording, the food waste is poured into a receiving hopper of a specified receiving device, a set of double-screw feeder is arranged at the bottom of the receiving hopper, the double-screw feeder not only has a coarse crushing function on large garbage and bagged garbage, but also can extrude water in the garbage to generate a large amount of leachate, a bottom plate of the receiving hopper is designed with a porous structure, the leachate automatically flows into a leachate tank through the porous bottom plate, the residual materials in the hopper are conveyed to a large material sorting system through the double-screw feeder and a subsequent double-screw conveyor, the residual materials are conveyed into a crusher through a transmission device for coarse crushing and sorting, after sorting, the residual materials are magnetically attracted by a magnetic separation device to sieve the uncrushable metals, the sieved materials enter a fine crushing and extruding dehydrator, and the extruding dehydrator adopts two-pass dehydration, the kitchen waste dehydration efficiency is more than 80%, the solid-phase materials dehydrated by extrusion and other solid residues are transported and treated together, the slurry dehydrated by extrusion enters a slurry pool and then is pumped to a desanding system, but before entering an anaerobic recycling treatment system, the slurry needs to be desanded and decontaminated, the dehydrated materials can directly enter a section treatment system, the materials enter the system for deep decomposition, thermophilic microorganisms are replaced by thermophilic microorganisms in the process for further decomposition, and humus is continuously increased and tends to be stabilized; the process and the equipment of the process are provided with the forced aeration device, the required materials are cooled, oxygen is forcibly provided for microorganisms, the superior condition of rapid decomposition is provided for organic materials, the whole process of organic matter decomposition is completed, derivative products are obtained in a section treatment system after mixing, conveying, crushing, moisture evaporation and odor removal, and odor generated in the steps enters the odor treatment system through the air exhaust pipeline and is discharged after deodorization treatment.
The waste water produced in the above steps is discharged into the waste water treatment system through the pipe body 108 and then discharged after purification treatment, when the pipe body 8 needs to be automatically cleaned, the transmission motor 107 is started to drive the screw rod 101 to rotate through the transmission belt 105, the fixed disc 102 and the screw rod 101 are in threaded and spiral connection, under the limiting action of the connecting block 106, the fixed disc 102 moves inside the pipe body 108 along with the rotation of the screw rod 101, and impurities on the inner wall of the pipe body 108 are scraped through the outer wall of the fixed disc 102 contacting with the inner wall of the pipe body 108.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A kitchen waste aerobic fermentation reduction treatment method is characterized by comprising the following steps:
firstly, pretreating kitchen garbage, and obtaining garbage materials to be fermented through a material receiving hopper;
secondly, coarsely crushing the garbage materials finally obtained in the first step, and crushing different bagged garbage materials;
thirdly, performing magnetic separation on the garbage materials finally obtained in the second step to separate out metals in the garbage materials; removing grease by a water washing process, wherein the water washing temperature is 20-100 ℃, and the water washing time is 15-40 minutes;
fourthly, screening the garbage materials finally obtained in the third step for large impurities, and removing the large impurities which can not be processed in the garbage materials through a full-automatic sorting system;
fifthly, squeezing and dehydrating the washed garbage materials, squeezing out organic slag through a squeezing dehydrator, feeding the organic slag into a section treatment system of a mixing bin, and adjusting water content to 55-65%;
sixthly, discharging the odor treated in the step into an odor treatment system through an exhaust pipe for treatment, and sending the wastewater obtained in the step into a wastewater treatment system for treatment through a self-cleaning drain pipe after the wastewater is subjected to desanding treatment;
and seventhly, deeply decomposing the organic slag finally obtained in the fifth step, replacing thermophilic microorganisms with the thermophilic microorganisms for further decomposition in the process, adding 0.8-1.2 kilograms of thermophilic microorganisms into 1 ton of organic slag, continuously increasing and stabilizing humus, arranging a forced aeration device in the sixth step, cooling the required materials, forcibly providing oxygen for the microorganisms, controlling the oxygen content of a fermentation bin to be 2-5ppm, controlling the fermentation temperature to be 55-75 ℃, controlling the fermentation time to be 15-35 days, performing air separation and magnetic separation on the fermented materials again to remove recyclable substances after drying sterilization or ozone sterilization, and finally preparing the organic fertilizer.
2. The aerobic fermentation and reduction disposal method for kitchen waste according to claim 1, characterized in that: the extrusion dehydrator adopts a double-spiral channel for extrusion dehydration.
3. The aerobic fermentation and reduction disposal method for kitchen waste according to claim 1, characterized in that: the material receiving hopper is driven by hydraulic power through a matched double-screw conveyor, and can automatically rotate reversely and give an alarm for prompting when the material is blocked.
4. The aerobic fermentation and reduction disposal method for kitchen waste according to claim 1, characterized in that: and an air supply system is arranged in the section treatment system, and the air supply system is provided with four Roots blowers.
5. The aerobic fermentation and reduction disposal method for kitchen waste according to claim 1, characterized in that: and the section treatment system is internally provided with turning and pushing equipment, and the pile turning equipment adopts a chain plate type progressive pile turning method.
6. The utility model provides a kitchen garbage aerobic fermentation minimizing processing system which characterized in that: comprises a self-cleaning drain pipe (1) and a collecting tank (2), wherein the output end of the self-cleaning drain pipe (1) is connected with the input end of the collecting tank (2), the output end of the collecting tank (2) is connected with a wastewater treatment system (3), the input end of the self-cleaning drain pipe (1) is connected with a material receiving hopper (4), the material receiving hopper (4) is connected with an air exhaust pipe (5), the air exhaust pipe (5) is connected with an odor treatment system (6), the input end of the material receiving hopper (4) is connected with a crusher (7), the input end of the crusher (7) is connected with a feeder (8), a magnetic separator (9) is arranged on the feeding machine (8), the input end of the feeding machine (8) is connected with a full-automatic sorting system (10), the output end of the full-automatic sorting system (10) is connected with an extrusion dehydrator (11), the output end of the extrusion dehydrator (11) is connected with an aerobic fermentation chamber (12).
7. The aerobic fermentation and reduction disposal system for kitchen waste according to claim 6, wherein: the self-cleaning drain pipe comprises a pipe body (108) and a screw rod (101), the screw rod (101) is arranged inside the pipe body (108), a connecting sleeve is fixed inside one end of the pipe body (108), one end of the screw rod (101) is rotatably arranged inside the connecting sleeve, a fixed disc (102) is sleeved outside the screw rod (101), a friction sleeve (103) is sleeved outside the fixed disc (102), the outer wall of the friction sleeve (103) is attached to the inner wall of the pipe body (108), an alignment groove (109) is formed inside the upper end of the pipe body (108), a connecting block (106) is fixed on the outer wall of the upper end of the fixed disc (102), the connecting block (106) penetrates through the friction sleeve (103) and is arranged inside the alignment groove (109), a transmission motor (107) is fixed on the outer wall of the upper end of the pipe body (108), and a transmission belt (105) is sleeved on the output end of the transmission motor (107), the other end of the transmission belt (105) is sleeved outside the screw rod (101), a water outlet (104) is formed in one end of the pipe body (108), and the transmission motor (107) is electrically connected with an external power supply.
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