CN110272923A - A kind of waste dish garbage as resource utilizes method and system - Google Patents
A kind of waste dish garbage as resource utilizes method and system Download PDFInfo
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- CN110272923A CN110272923A CN201910566460.3A CN201910566460A CN110272923A CN 110272923 A CN110272923 A CN 110272923A CN 201910566460 A CN201910566460 A CN 201910566460A CN 110272923 A CN110272923 A CN 110272923A
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- waste dish
- anaerobic fermentation
- biogas
- fermentation tank
- anaerobic
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- 239000002699 waste material Substances 0.000 title claims abstract description 72
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000000855 fermentation Methods 0.000 claims abstract description 67
- 239000002002 slurry Substances 0.000 claims abstract description 43
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 40
- 230000020477 pH reduction Effects 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 24
- 238000004140 cleaning Methods 0.000 claims abstract description 17
- 230000029087 digestion Effects 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 230000007062 hydrolysis Effects 0.000 claims abstract description 14
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 14
- 210000003608 fece Anatomy 0.000 claims abstract description 10
- 230000006641 stabilisation Effects 0.000 claims abstract description 9
- 239000003895 organic fertilizer Substances 0.000 claims abstract description 6
- 244000144977 poultry Species 0.000 claims abstract description 6
- 244000144972 livestock Species 0.000 claims abstract description 5
- 239000006174 pH buffer Substances 0.000 claims abstract description 3
- 239000005416 organic matter Substances 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 7
- 238000011105 stabilization Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 239000002361 compost Substances 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 239000002068 microbial inoculum Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 150000003384 small molecules Chemical class 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000004537 pulping Methods 0.000 claims description 2
- 238000000746 purification Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 230000005587 bubbling Effects 0.000 claims 1
- 238000010992 reflux Methods 0.000 abstract description 7
- 239000003337 fertilizer Substances 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 abstract description 5
- 235000014113 dietary fatty acids Nutrition 0.000 abstract description 4
- 229930195729 fatty acid Natural products 0.000 abstract description 4
- 239000000194 fatty acid Substances 0.000 abstract description 4
- 150000004665 fatty acids Chemical class 0.000 abstract description 4
- 230000004151 fermentation Effects 0.000 description 11
- 238000010907 mechanical stirring Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008236 heating water Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000010871 livestock manure Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010815 organic waste Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 241000287828 Gallus gallus Species 0.000 description 1
- 241001494479 Pecora Species 0.000 description 1
- 241000722270 Regulus Species 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011403 purification operation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D1/00—Fertilisers containing potassium
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/90—Apparatus therefor
- C05F17/921—Devices in which the material is conveyed essentially horizontally between inlet and discharge means
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/90—Apparatus therefor
- C05F17/95—Devices in which the material is conveyed essentially vertically between inlet and discharge means
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/20—Liquid fertilisers
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/36—Means for collection or storage of gas; Gas holders
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/18—External loop; Means for reintroduction of fermented biomass or liquid percolate
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/24—Recirculation of gas
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
- C12M41/18—Heat exchange systems, e.g. heat jackets or outer envelopes
- C12M41/22—Heat exchange systems, e.g. heat jackets or outer envelopes in contact with the bioreactor walls
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M45/00—Means for pre-treatment of biological substances
- C12M45/02—Means for pre-treatment of biological substances by mechanical forces; Stirring; Trituration; Comminuting
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M45/00—Means for pre-treatment of biological substances
- C12M45/04—Phase separators; Separation of non fermentable material; Fractionation
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M45/00—Means for pre-treatment of biological substances
- C12M45/06—Means for pre-treatment of biological substances by chemical means or hydrolysis
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M45/00—Means for pre-treatment of biological substances
- C12M45/20—Heating; Cooling
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P5/00—Preparation of hydrocarbons or halogenated hydrocarbons
- C12P5/02—Preparation of hydrocarbons or halogenated hydrocarbons acyclic
- C12P5/023—Methane
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The present invention provides a kind of waste dish resource utilization method, by the cleaning of waste dish rubbish, sorting, slurrying, it is pumped into hydrolization and acidification tank after being deployed after slurry and the biogas slurry of reflux are mixed, the anaerobic digestion solution after hydrolysis acidification is passed through in cstr anaerobic fermentation tank again, plant ash is added as pH buffer, add the c/n ratio in feces of livestock and poultry adjusting material, obtained biogas slurry is partly refluxed in preparing pool, it is partly refluxed in cstr anaerobic fermentation tank, obtained biogas is partly refluxed to cstr anaerobic fermentation tank, obtained biogas residue is fabricated to organic fertilizer.Thus, the present invention solves traditional waste dish anaerobic fermentation and is easy acidification, crust generates dross, inhibit the process of anaerobic methane production, plant ash is added in anaerobic methane production fermentor, the volatile fatty acid generated in hydrolization and acidification tank can be released to inhibit subsequent methane phase process, while the fertilizer efficiency of biogas residue and biogas slurry can be improved again after fermenting, realize that waste dish processing disposal process is innoxious, minimizing, stabilisation, recycling.
Description
Technical field
The invention belongs to the technical fields that domestic garbage resource utilizes, and in particular to a kind of waste dish garbage as resource utilization
Technology.
Background technique
Vegetable castoff is compared with other solid organic waste substances, the basic nonhazardous in addition to pest and disease damage tissue occurs for part, tool
Have that moisture content is high, the characteristics such as full of nutrition.Solid (over dry substance) content in usual waste dish rubbish is 8%~19%, over dry
Organic matter accounting 85%~95% in substance.
The mode of conventional process organic waste is predominantly filled or is burned.It fills easily operated, but usually employs a large amount of
Manpower and material resources, and valuable land resource is occupied, and with the rise of land price, it is higher and higher to fill cost.Burning can contract rapidly
Subtract volume of waste, processing speed is fast, and generating thermal energy can be used as heat energy power-generating, but often because burning the improper of condition and means
And cause atmosphere polluting problem.
Anaerobic fermentation technology can not only degrade to waste dish solid waste, while the biogas generated surfs the Internet and generates electricity,
With biggish economic benefit.However due in waste dish moisture content it is higher, generate a large amount of biogas slurry, and in anaerobic fermentation process
In be easy hydrolysis acidification, the volatile fatty acid of generation inhibits the process of methane phase, while the dross generated is also to a certain degree
Affect the progress of anaerobic methane production.
Summary of the invention
Goal of the invention: the biogas slurry amount generated in anaerobic fermentation process for waste dish rubbish is big, facile hydrolysis acidification, Yi Fa
The technical issues of dross is generated in fermentation tank, the present invention provides a kind of waste dish resource utilization method, by being back to biogas slurry
In cstr anaerobic fermentation tank (being thoroughly mixed formula anaerobic reactor), and biogas can be improved to a certain extent after biogas slurry reflux
Yield.
Technical scheme is as follows:
Scheme one: a kind of waste dish garbage as resource utilizes method, comprising the following steps:
Cleaning removal of impurities: waste dish rubbish is transported to bubble washer, to remove the gravel in waste dish rubbish；
Sorting: the waste dish rubbish after cleaning is transported on sorting platform, the non-easy drop contained in waste dish rubbish is sub-elected
Solution property rubbish；
Broken slurrying: the waste dish rubbish after sorting is delivered to after broken crusher machine and is delivered to beater again slurry is made；
Materials allocating: being pumped into preparing pool after the biogas slurry to flow back in the slurry and product resource utilization step is mixed,
The anaerobic digestion solution of specified solid content is obtained after allotment；
Hydrolysis acidification: the anaerobic digestion solution is pumped into hydrolization and acidification tank, by macromolecular, the difficult drop in anaerobic digestion solution
The organic matter of solution is hydrolyzed into small molecule, degradable organic matter；
Anaerobic methane production: the anaerobic digestion solution after hydrolysis acidification is passed through in cstr anaerobic fermentation tank and carries out anaerobism production first
Alkane, by the 10-30% addition plant ash of the over dry material mass in the material in anaerobic fermentation tank as pH buffer, addition poultry
Poultry manure stops after a certain period of time to adjust the ratio of the c/n in material as 20-35:1, obtained biogas is stored, is then existed
Flocculant PAM is added in cstr anaerobic fermentation tank, and carries out being dehydrated isolated biogas slurry and biogas residue by centrifugal dehydrator；
Product resource utilization: by being partly refluxed in preparing pool for the biogas slurry, it is partly refluxed to cstr anaerobic fermentation
In tank, to improve the yield of biogas；The biogas is partly refluxed to cstr anaerobic fermentation tank to destroy cstr anaerobic fermentation
The scum layer that tank top is formed promotes anaerobic fermentation；The biogas residue is fabricated to organic fertilizer.
Due to the organic matter that a part does not decompose in biogas slurry, biogas slurry is back in cstr anaerobic fermentation tank, to object
Material is degraded again, to generate a part of new biogas.In addition, the methanogen contained in biogas slurry reenters fermentor
In, the activity of mushroom is activated again, can also improve the yield of biogas.Also, the reflux of biogas slurry not only improves the yield of biogas,
Also reduce the reservoir volume of biogas slurry.
In addition, the mechanical stirring that waste dish fermentation process uses is difficult to stir the dross of anaerobic fermentation process generation, the present invention
The biogas of generation is back in fermentor, the top formation scum layer of fermentor can be made simultaneously, to avoid the blocked up shadow of dross by bursting
Ring anaerobic fermentation term.It is compared to tradition and mechanical stirring is used alone, keep material mass transfer more uniform.
As a preferred embodiment, the waste dish msw water content is 80-95%.
As a preferred embodiment, in hydrolysis acidification step, ph=5.5-6.5 in the hydrolization and acidification tank is controlled, temperature
Degree is 25-35 DEG C.
As a preferred embodiment, in anaerobic methane production step, the temperature controlled in the cstr anaerobic fermentation tank is
35-37 DEG C, residence time 18-22d.
As a preferred embodiment, in product resource utilization step: the 50% of the biogas is passed through again to cstr
In anaerobic fermentation tank, for generating electricity after remainder purification；The 25% of the biogas slurry is back in preparing pool, 25% is back to
In cstr anaerobic fermentation tank, the biogas slurry of residue 50% enters stabilization pond；It is carried out after the biogas residue is added microbial inoculum and feces of livestock and poultry
Aerobic compost is simultaneously fabricated to organic fertilizer.
As a preferred embodiment, in cleaning removal step, by the way that high-pressure spraying equipment is arranged at the top of cleaning machine,
Secondary cleaning is carried out to waste dish, to remove waste dish dish foam, dish slag.
As a preferred embodiment, it in sorting step, to the non-readily degradable rubbish sub-elected and is recycled；
The non-readily degradable rubbish includes but is not limited to glass, metal and plastics.
As a preferred embodiment, the anaerobic digestion that solid content is 8-10% is obtained in materials allocating step, after allotment
Liquid, and heating and thermal insulation is carried out to 30-37 DEG C to the anaerobic digestion solution material.
As a preferred embodiment, in broken pulping stage, the revolution of beater is 2000-4000r/min；Waste dish rubbish
Rubbish is crushed to 6mm or less.
Scheme two: a kind of waste dish garbage as resource utilizes system, which is characterized in that for realizing scheme one and its preferred side
Waste dish garbage as resource described in case any one utilizes method, including sequentially connected bubble washer, sorting platform, broken
Machine, beater, preparing pool, hydrolization and acidification tank and cstr anaerobic fermentation tank and stabilization pond, centrifugal dehydrator and membrane type gas storage
Cabinet；Wherein: high-pressure spraying equipment is equipped at the top of bubble washer；Stirring is equipped in hydrolization and acidification tank and CSTR anaerobic fermentation tank
Device, outside are equipped with insulating layer；Centrifugal dehydrator is connect by screw pump with anaerobic fermentation tank.
The present invention has the advantage that relative to traditional waste dish anaerobic fermentation technology
(1) can be effectively improved waste dish hydrolysis acidification by the way of biogas slurry reflux inhibits methane phase process to carry out, and mentions simultaneously
For biogas output, the starting of anaerobic fermentation tank can also be accelerated by being back in preparing pool；In addition, the reflux of biogas is conducive to fermentor
Interior dross is uniformly mixed, and avoids forming blocked up scum layer influence anaerobic fermentation term at the top of fermentor.
(2) Hydrolysis Acidification is relieved to the plant ash that anaerobic fermentation tank adds generate volatile fatty acid to anaerobism production
The inhibition of methane process, while the fertilizer efficiency of biogas residue and biogas slurry can also be improved because containing a large amount of potassium element in plant ash, it realizes
Waste dish handles the innoxious of disposal process, minimizing, stabilisation, recycling.
Detailed description of the invention
Fig. 1 is the structure composition schematic diagram that waste dish garbage as resource utilizes system；
Fig. 2 is the process flow chart that waste dish garbage as resource utilizes method.
Specific embodiment
Embodiment 1 discloses a kind of waste dish garbage as resource using system, mainly include sequentially connected chain scraper conveyor 1,
It is bubble washer 2, sorting platform 3, crusher 4, beater 5, preparing pool 6, hydrolization and acidification tank 7, cstr anaerobic fermentation tank 8, steady
Determine the pool 9, centrifugal dehydrator 10, membrane type gas storage holder 11, biogas generator 12.Wherein: the top of bubble washer 2 is equipped with high pressure spray
Equipment is drenched, for carrying out secondary cleaning to waste dish rubbish；Preparing pool 6 is underground type sealed concrete container；7 He of hydrolization and acidification tank
It is equipped with blender at the top of CSTR anaerobic fermentation tank 8, the type of blender can be oar blade type, hinging type, appointing in rear curved leaf
It anticipates one kind, is equipped with heating water bath insulating layer outside hydrolization and acidification tank 7 and CSTR anaerobic fermentation tank 8；Preparing pool 6 and hydrolysis acidification
Feed pump is equipped between tank 7；High-pressure spraying equipment is equipped at the top of bubble washer 2, for carrying out secondary cleaning to waste dish rubbish；
Centrifugal dehydrator 10 is also connect by screw pump with cstr anaerobic fermentation tank 8.
Embodiment 2 discloses a kind of waste dish garbage as resource using method, using waste dish garbage as resource described in embodiment 1
Using system, for handling the waste dish rubbish that moisture content is about 80-95%, comprising the following steps:
1) cleaning removal of impurities: waste dish rubbish is transported to bubble washer 2 by chain scraper conveyor 1, utilizes bubble washer 2
The bubble of middle generation, making waste dish rubbish, rolling, gravel sink to bottom up and down in bubble washer 1.As a preferred embodiment,
High-pressure spraying equipment can be set at the top of bubble washer 2, by the high-pressure spraying equipment at 2 top of bubble washer to waste dish rubbish
Rubbish carries out secondary cleaning, dish foam, dish slag in removal waste dish rubbish.
2) it sorts: the waste dish rubbish after cleaning being transported on sorting platform 3 by chain scraper conveyor, sub-elects glass
The non-readily degradable rubbish such as bottle, regulus, plastics, and be recycled.Artificial separation platform can be used herein, can also be used
Automatic sorting platform specifically can carry out selection setting according to application demand.
3) be crushed slurrying: the waste dish rubbish after sorting is delivered in crusher 4, by waste dish refuse breaking to 6mm hereinafter,
Broken rubbish is delivered to beater 5 by screw conveyor, slurry is made；Wherein, the revolution of beater may be configured as
2000-4000r/min。
4) deploy: by after slurrying waste dish and subsequent step in the biogas slurry that flows back mix after be pumped into preparing pool, after allotment
Anaerobic digestion solution solid content is 8-10%, and carries out heating and thermal insulation to 30-37 DEG C to the material after allotment.
5) hydrolysis acidification: the anaerobic digestion solution after allotment is pumped into hydrolization and acidification tank 7 by feed pump, in hydrolysed ferment
Macromolecular in tank 7 in anaerobic digestion solution, organic matter difficult to degrade are hydrolyzed into small molecule, degradable organic matter.Wherein, institute
PH=5.5-6.5 in control hydrolization and acidification tank is stated, temperature is 25-35 DEG C.
6) anaerobic digestion solution after hydrolysis acidification anaerobic methane production: is passed through progress anaerobism production in cstr anaerobic fermentation tank 8
Methane, by the 10-30% addition plant ash of over dry material mass in the material in anaerobic fermentation tank as in anaerobic fermentation tank
PH buffer can improve the biogas residue of subsequent output and the fertilizer efficiency of biogas slurry, so simultaneously because containing a large amount of potassium element in plant ash
A certain proportion of feces of livestock and poultry (for example, cow dung, chicken manure, sheep dung etc.) is added in backward cstr anaerobic fermentation tank 8, to adjust material
Carbon-nitrogen ratio (c/n) be 20-35:1.It is arranged with extra play outside fermentor, uses heating water bath in extra play, is detested with adjusting cstr
Temperature in aerobe fermentation tank 8 is 35-37 DEG C.Residence time of the material in cstr anaerobic fermentation tank 8 is 18-22d, obtains biogas
It is stored into membrane type gas storage holder 11, biogas slurry is obtained by the dehydration of centrifugal dehydrator 10 after obtained fermentation liquid addition flocculant PAM
And biogas residue.
7) product resource utilization: the 50% of obtained biogas is back in cstr anaerobic fermentation tank 8, can promote substantially
Product anaerobic fermentation tank stirs evenly, and promotes the fermentation of material, and residue can be used for everyday devices by the online that generates electricity after methane purification
Operation uses；The 25% of obtained biogas slurry is back to the physicochemical property for adjusting material in preparing pool 6, in addition 25% is back to
In cstr anaerobic fermentation tank 8, the biogas slurry of residue 50%, which enters in stabilization pond 9, to be stored and is stablized, with further degradation of ammonia nitrogen
Content；Obtained biogas residue is added into microbial inoculum and feces of livestock and poultry carries out aerobic compost, is fabricated to organic fertilizer after fermentation.
Based on above-mentioned waste dish resource utilization method, by being back in cstr anaerobic fermentation tank to biogas slurry, biogas slurry reflux
The yield of biogas can be improved to a certain extent afterwards.This is because the organic matter that a part does not decompose in biogas slurry carries out again
Degradation, produces a part of biogas.In addition, the methanogen contained in biogas slurry reenters in fermentor, the activity weight of mushroom
It is newly activated, can also improve the yield of biogas.Therefore, the reflux of biogas slurry not only improves the yield of biogas, also reduces biogas slurry
Reservoir volume.The mechanical stirring that usual waste dish fermentation process uses is difficult to stir the dross of anaerobic fermentation process generation, the present invention
By the way that the biogas of generation to be back in cstr anaerobic fermentation tank, the top of cstr anaerobic fermentation tank can be made to form scum layer and pushed up
It is broken, and dross blocked up influence anaerobic fermentation term is avoided, it is compared to tradition and mechanical stirring is used alone, make material mass transfer more
Uniformly.It can be seen that the present invention, which solves traditional waste dish anaerobic fermentation, is easy acidification, crust generates dross, and anaerobism is inhibited to produce first
The process of alkane adds plant ash in anaerobic methane production fermentor, can release the volatile fat generated in hydrolization and acidification tank
Acid inhibits subsequent methane phase process, while can improve the fertilizer efficiency of biogas residue and biogas slurry after fermenting again, realizes waste dish processing disposition
Process is innoxious, minimizing, stabilisation, recycling.
It can be seen that a kind of recycling processing method of waste dish provided by the invention, solves traditional waste dish anaerobic fermentation
It is easy acidification, crust generates dross, inhibits the process of anaerobic methane production, plant ash is added in anaerobic methane production fermentor, both
The volatile fatty acid generated in hydrolization and acidification tank can be released to inhibit subsequent methane phase process, while natural pond can be improved again after fermenting
The fertilizer efficiency of slag and biogas slurry, realizing waste dish processing, disposal process is innoxious, minimizing, stabilisation, recycling.
Finally, it should be noted that although embodiment of the present invention is described in conjunction with attached drawing above, this hair
Bright to be not limited to above-mentioned specific embodiments and applications field, above-mentioned specific embodiment is only schematically, refers to
The property led, rather than it is restrictive.Those skilled in the art under the enlightenment of this specification, are not departing from power of the present invention
In the case that benefit requires protected range, a variety of forms can also be made, these belong to the column of protection of the invention.
Claims (10)
1. a kind of waste dish garbage as resource utilizes method, which comprises the following steps:
Cleaning removal of impurities: waste dish rubbish is transported to bubble washer, to remove the gravel in waste dish rubbish；
Sorting: the waste dish rubbish after cleaning is transported on sorting platform, the non-readily degradable contained in waste dish rubbish is sub-elected
Rubbish；
Broken slurrying: the waste dish rubbish after sorting is delivered to after broken crusher machine and is delivered to beater again slurry is made；
Materials allocating: being pumped into preparing pool after the biogas slurry to flow back in the slurry and product resource utilization step is mixed, and deploys
The anaerobic digestion solution of specified solid content is obtained afterwards；
Hydrolysis acidification: the anaerobic digestion solution is pumped into hydrolization and acidification tank, by the macromolecular, difficult to degrade in anaerobic digestion solution
Organic matter is hydrolyzed into small molecule, degradable organic matter；
Anaerobic methane production: the anaerobic digestion solution after hydrolysis acidification is passed through in cstr anaerobic fermentation tank and carries out anaerobic methane production, is pressed
The 10-30% addition plant ash of over dry material mass in material in anaerobic fermentation tank adds animal dung as pH buffer
Just it to adjust the ratio of the c/n in material as 20-35:1, stops after a certain period of time, obtained biogas is stored, then in cstr
Flocculant PAM is added in anaerobic fermentation tank, and carries out being dehydrated isolated biogas slurry and biogas residue by centrifugal dehydrator；
Product resource utilization: being partly refluxed in preparing pool for the biogas slurry is partly refluxed in cstr anaerobic fermentation tank,
To improve the yield of biogas；The biogas is partly refluxed to cstr anaerobic fermentation tank to destroy cstr anaerobic fermentation tank top
The scum layer of formation promotes anaerobic fermentation；The biogas residue is fabricated to organic fertilizer.
2. according to claim a kind of waste dish resource utilization method, which is characterized in that the waste dish msw water content is
80-95%.
3. waste dish resource utilization method according to claim 1, which is characterized in that in hydrolysis acidification step, control
Ph=5.5-6.5 in the hydrolization and acidification tank, temperature are 25-35 DEG C.
4. waste dish resource utilization method according to claim 1, which is characterized in that in anaerobic methane production step, control
Making the temperature in the cstr anaerobic fermentation tank is 35-37 DEG C, residence time 18-22d.
5. waste dish resource utilization method according to claim 1, which is characterized in that in product resource utilization step
In: the 50% of the biogas is passed through again into cstr anaerobic fermentation tank, for generating electricity after remainder purification；By the biogas slurry
25% be back in preparing pool, 25% is back in cstr anaerobic fermentation tank, and the biogas slurry of residue 50% enters stabilization pond；By institute
Aerobic compost is carried out after stating biogas residue addition microbial inoculum and feces of livestock and poultry and is fabricated to organic fertilizer.
6. waste dish resource utilization method according to claim 1, which is characterized in that in cleaning removal step, pass through
High-pressure spraying equipment is set at the top of cleaning machine, secondary cleaning is carried out to waste dish, to remove waste dish dish foam, dish slag.
7. waste dish resource utilization method according to claim 1, which is characterized in that in sorting step, to sub-electing
Non- readily degradable rubbish and be recycled；The non-readily degradable rubbish includes but is not limited to glass, metal and plastics.
8. waste dish resource utilization method according to claim 1, which is characterized in that in materials allocating step, allotment
The anaerobic digestion solution that solid content is 8-10% is obtained afterwards, and heating and thermal insulation is carried out to 30-37 DEG C to the anaerobic digestion solution material.
9. a kind of waste dish resource utilization method according to claim 1 or 4, which is characterized in that in broken pulping stage
In, the revolution of beater is 2000-4000r/min；Waste dish rubbish is crushed to 6mm or less.
10. a kind of waste dish garbage as resource utilizes system, which is characterized in that for realizing described in claim 1 to 9 any one
Waste dish garbage as resource utilize method, including sequentially connected bubble washer, sorting platform, crusher, beater, allotment
Pond, hydrolization and acidification tank and cstr anaerobic fermentation tank and stabilization pond, centrifugal dehydrator and membrane type gas storage holder；Wherein: bubbling -cleaning
High-pressure spraying equipment is equipped at the top of machine；It is equipped with agitating device in hydrolization and acidification tank and CSTR anaerobic fermentation tank, outside is equipped with
Insulating layer；Centrifugal dehydrator is connect by screw pump with anaerobic fermentation tank.
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| CN112939667A (en) * | 2021-03-11 | 2021-06-11 | 刘文治 | Total-nutrient water-soluble fertilizer and production method thereof |
| CN113185342A (en) * | 2021-03-30 | 2021-07-30 | 仲恺农业工程学院 | Method and device for producing efficient organic liquid fertilizer by using waste vegetables |
| CN114891604A (en) * | 2022-05-24 | 2022-08-12 | 兰州理工大学 | Backheating quality recovery system applied to large-scale treatment of waste vegetables |
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| CN113185342A (en) * | 2021-03-30 | 2021-07-30 | 仲恺农业工程学院 | Method and device for producing efficient organic liquid fertilizer by using waste vegetables |
| CN114891604A (en) * | 2022-05-24 | 2022-08-12 | 兰州理工大学 | Backheating quality recovery system applied to large-scale treatment of waste vegetables |
| CN116731820A (en) * | 2023-06-08 | 2023-09-12 | 中国铁工投资建设集团有限公司 | Organic solid waste loop-ring two-phase anaerobic fermentation system and fermentation device |
| CN116731820B (en) * | 2023-06-08 | 2024-02-09 | 中国铁工投资建设集团有限公司 | Organic solid waste loop-ring two-phase anaerobic fermentation system and fermentation device |
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