CN107511388A - A kind of organic perishable garbage anaerobic fermentation cogeneration of heat and power biogas slurry fertilizer manufacture and system - Google Patents
A kind of organic perishable garbage anaerobic fermentation cogeneration of heat and power biogas slurry fertilizer manufacture and system Download PDFInfo
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- CN107511388A CN107511388A CN201710607636.6A CN201710607636A CN107511388A CN 107511388 A CN107511388 A CN 107511388A CN 201710607636 A CN201710607636 A CN 201710607636A CN 107511388 A CN107511388 A CN 107511388A
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- 239000002002 slurry Substances 0.000 title claims abstract description 64
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 41
- 239000003337 fertilizer Substances 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 230000004151 fermentation Effects 0.000 claims abstract description 100
- 238000003860 storage Methods 0.000 claims abstract description 34
- 230000003139 buffering effect Effects 0.000 claims abstract description 31
- 239000003895 organic fertilizer Substances 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 230000029087 digestion Effects 0.000 claims abstract description 18
- 238000007599 discharging Methods 0.000 claims abstract description 17
- 238000004537 pulping Methods 0.000 claims abstract description 17
- 239000002918 waste heat Substances 0.000 claims abstract description 17
- 230000008878 coupling Effects 0.000 claims abstract description 16
- 238000010168 coupling process Methods 0.000 claims abstract description 16
- 238000005859 coupling reaction Methods 0.000 claims abstract description 16
- 238000007781 pre-processing Methods 0.000 claims abstract description 16
- 238000010992 reflux Methods 0.000 claims abstract description 8
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims description 46
- 239000000463 material Substances 0.000 claims description 14
- 239000005416 organic matter Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 238000006477 desulfuration reaction Methods 0.000 claims description 12
- 230000023556 desulfurization Effects 0.000 claims description 12
- 239000004744 fabric Substances 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 238000012216 screening Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 9
- 239000010782 bulky waste Substances 0.000 claims description 7
- 239000010815 organic waste Substances 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
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- 238000005188 flotation Methods 0.000 claims description 5
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- 239000012535 impurity Substances 0.000 claims description 5
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- -1 dry Substances 0.000 claims 1
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- 238000010248 power generation Methods 0.000 abstract description 8
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000010411 cooking Methods 0.000 description 4
- UELITFHSCLAHKR-UHFFFAOYSA-N acibenzolar-S-methyl Chemical compound CSC(=O)C1=CC=CC2=C1SN=N2 UELITFHSCLAHKR-UHFFFAOYSA-N 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 239000010791 domestic waste Substances 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 230000020477 pH reduction Effects 0.000 description 3
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- 239000004576 sand Substances 0.000 description 3
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- 239000007790 solid phase Substances 0.000 description 3
- 241000219112 Cucumis Species 0.000 description 2
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 description 2
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- 229910052700 potassium Inorganic materials 0.000 description 2
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- 208000010392 Bone Fractures Diseases 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
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- 150000001720 carbohydrates Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
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- 201000010099 disease Diseases 0.000 description 1
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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
-
- 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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/20—Waste processing or separation
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Fertilizers (AREA)
Abstract
The present invention provides a kind of organic perishable garbage anaerobic fermentation cogeneration of heat and power biogas slurry fertilizer manufacture and system, including the preprocessing system, anaerobic fermentation system, three-stage circulating fermentation system, biogas generator cogeneration of heat and power and the waste heat coupling that are sequentially connected utilize system and biogas slurry organic fertilizer system；Preprocessing system includes acceptance pool, bag-breaking device, rotary screen, selection by winnowing concentration equipment, broken pulping device and the sandstone weight removal device being sequentially connected；Anaerobic fermentation system includes buffering souring tank, prefermentor, after fermentation tank and biogas storage cabinet；Biogas slurry organic fertilizer system includes biogas slurry and biogas residue separator, Liquid organic fertilizer preparation facilities and solid-state fertilizer preparation facilities, the design lifts biogas yield by way of primary fermentation, after fermentation double fermentation and partial reflux, the after fermentation discharging that digestion is more abundant, property is more stable is advantageous to biogas slurry Liquid organic fertilizer, and marsh gas power generation, biogas slurry fertilizer improve fruit/vegetable waste comprehensive energy and the level of resources utilization.
Description
[technical field]
The present invention relates to organic perishable technical field of domestic garbage treatment, more particularly to one kind can make it possible to measure to fill
Divide rational utilization, significantly improve fruit/vegetable waste comprehensive energy and organic perishable garbage anaerobic fermentation heat of the level of resources utilization
Produce biogas slurry fertilizer manufacture and system in Electricity Federation.
[background technology]
In March, 2017, National Development and Reform Commission combines with house town and country construction portion to issue《Categorized consumer waste system is real
Apply scheme》, scheme points out that China's Output of Domestic Waste is rapid as socio-economic development and material consumption level greatly improve
Increase, environment hidden danger becomes increasingly conspicuous, and has become the restraining factors of new Urbanization Progress；Categorized consumer waste system embodiment party
Case is planned for the year two thousand twenty bottom, establishes refuse classification relevant laws and regulations and standards system substantially, forms reproducible, propagable life
Refuse classification pattern living, implementing the city of house refuse mandatory classifications, house refuse recovery utilization rate reaches more than 35%.Its
In, organic perishable rubbish accounting is eaten more than 50% mainly caused by relevant unit dining room, hotel, restaurant etc. in house refuse
Kitchen rubbish, the broken bone of vegetable melon and fruit rubbish, slough, meat caused by the market of farm produce, wholesale market of agricultural products, eggshell, in animal products
It is dirty etc..Such organic perishable msw water content is high, calorific value is small, and current landfill causes the wasting of resources with processing modes such as burnings
Height, environmental risk are big.
Fruit/vegetable waste refers to the caused fruits and vegetables class discarded object in daily life and agricultural production process.Fruits and vegetables
Rubbish accounts for fruit and vegetable total output100,000,000 tons of fruits and vegetables rubbish is about produced every year, except abandoning in field
Part, remaining major part is flowed into domestic waste in the form of the rubbish of market, and it is total that the part accounts for domestic waste
20% or so of amount.Fruits and vegetables rubbish has following features:1) moisture content and the content of organic matter are high, and moisture content is
Total volatile solids content accounts for more than the 80% of total solid, includingSoluble saccharide and starch,Crude fibre (containing celluloseHemicelluloseLignin), crude proteinCrude fat2) nutritional ingredient is high, and calculating nitrogen content with butt existsTotal phosphorus content isPotassium content isIts nutritional ingredient is suitable with conventional natural organic fertilizer material；3) it is non-toxic
Material, in addition to except part the fruits and vegetables tissue of pest and disease damage occurs for the fruit/vegetable waste normally planted, have without others
Malicious nuisance；4) generating source Relatively centralized, main concentrate are produced in the cities and towns market of farm produce, fruits and vegetables transfer transport station, fruits and vegetables
The ground such as transaction place, it is not easy and other domestic garbage mixings, it is possible to achieve processing is collected separately and utilizes, reduces sorting cost, with
Upper feature determines the specific aim (the independent handset processes of fruit/vegetable waste for being directed to particular place) to fruits and vegetables garbage disposal, the energy
Property (utilizing carbon, hydrogen equal energy source element), resource (using the fertilizer element such as nitrogen, phosphorus, potassium), biological treatment suitability it is (higher
Moisture content and the suitable anaerobic digestion methane production biological treatment of the content of organic matter that can ferment).
How could so that obtain lifting by a relatively large margin to the efficiency of fruits and vegetables garbage disposal, and avoid causing dirt to environment
Dye, is the problem of those skilled in the art often considers.
[content of the invention]
To overcome the problems of prior art, the present invention, which provides one kind, can make it possible to measure adequately and reasonably profit
With significantly improving fruit/vegetable waste comprehensive energy and organic perishable garbage anaerobic fermentation cogeneration of heat and power biogas slurry of the level of resources utilization
Fertilizer manufacture and system.
The scheme that the present invention solves technical problem is to provide a kind of organic perishable garbage anaerobic fermentation cogeneration of heat and power biogas slurry system
Fertile system, including preprocessing system, medium temperature wet type anaerobic fermentation system, three-stage circulating fermentation system, the biogas being sequentially connected
Generator cogeneration of heat and power and waste heat coupling utilize system and biogas slurry organic fertilizer system；The preprocessing system includes connecting successively
Acceptance pool, bag-breaking device, rotary screen, selection by winnowing concentration equipment, broken pulping device and the sandstone weight removal device connect；In described
Warm and humid formula anaerobic fermentation system includes buffering souring tank, prefermentor, after fermentation tank and biogas storage cabinet；The marsh gas power generation
Machine cogeneration of heat and power and waste heat coupling include biogas desulfurization purifier, biogas storing pressurized device, biogas generator using system
Group and waste heat coupling utilize device；The biogas slurry organic fertilizer system includes biogas slurry and biogas residue separator, Liquid organic fertilizer system
Standby device and solid-state fertilizer preparation facilities.
Preferably, the acceptance pool bottom of the preprocessing system is provided with screw feeding device and material toggling, feeding device；Raw material
Through bag-breaking device broken bag, pick out and be sent to rotary screen after Bulky Waste and screened；From rotary screen on the sieve based on inorganic matter
Organic matter is picked out in thing and is fed directly to broken pulping device, screenings carries out broken system again after follow-up selection by winnowing concentration equipment
Slurry.
Preferably, the tank deck of the buffering souring tank in the medium temperature wet type anaerobic fermentation system and prefermentor is all reinforcing bar
Concrete structure, and the agitating device that stirring intensity greatly, is vertically fixed is configured with tank；The biogas storage cabinet is sent out after being arranged at
At the top of fermentation tank, the solid content of raw material is relatively low after primary fermentation reacts, and is also configured with stirring intensity in the after fermentation tank
Relatively low side stirring.
Preferably, the prefermentor in the medium temperature wet type anaerobic fermentation system and after fermentation tank configure hydro-thermal temperature control system
System；The buffering souring tank, prefermentor, after fermentation tank configure relief valve, pH meter, redox reaction potentiometer.
Preferably, the buffering souring tank receives the stench processing system in workshop with pre-treatment and is connected, prefermentor with
Gas caused by after fermentation tank anaerobic digestion is stored in the biogas storage cabinet of after fermentation tank top, the biogas in biogas storage cabinet
Clean through immature earthen sites, dry, pressurize after lead to biogas generator cogeneration of heat and power and waste heat coupling is sent out using the biogas of system
Group of motors.
Preferably, it is interconnected between the buffering souring tank, prefermentor, after fermentation tank, the material of after fermentation tank is pressed
Ratio is recycled to prefermentor and buffering souring tank；Fermentation process produces biogas storage in biogas storage cabinet, and the biogas
The emergent torch of storage cabinet exit site connection and biogas desulfurization purifier, biogas desulfurization purifier outlet connection marsh gas power generation
Unit；Air-flotation process is passed through in the biogas slurry part of after fermentation tank, and flow back medium temperature wet type anaerobic fermentation system.
A kind of organic perishable garbage anaerobic fermentation cogeneration of heat and power biogas slurry fertilizer manufacture, comprises the following steps,
S1：It will be transported by the organic perishable house refuse put on by classification to the acceptance pool of the preprocessing system；Receive
Bottom of pond charging gear even feeding, cloth；
S2：Raw material after step S1 processing sorts out Bulky Waste through bag-breaking device broken bag；Further carry out rotary screen
Screening, oversize are picked out organic waste and crushed, and screenings enters follow-up selection by winnowing concentration equipment；
S3：Raw material after sorting is broken through broken pulping device hammer, slurrying, the sieve that the raw material after crushing passes through certain pore size
Net, the inorganic matter on screen cloth are directly removed, and part sandstone in organic matter, small particle inorganic matter are mingled under sieve through sandstone weight
Removal device cleans；
S4：Raw material after the completion of being cleaned in step S3 is stored in the buffering souring tank of medium temperature wet type anaerobic fermentation system
In, the slurry after being homogenized, being acidified is pumped into prefermentor and carries out acidifying methanation, enters back into the further methanation of after fermentation tank；
S5：By biogas storage caused by anaerobic digestion in the step S4 in the biogas storage cabinet of after fermentation tank top,
Biogas is transported to Biogas Generator Set after purification, and caused heat energy is except for heat energy needed for forward and backward fermentation tank mesophilic digestion
Outside, cogeneration is incorporated to national grid；It is solid that biogas slurry caused by anaerobic fermentation prepares Liquid organic fertilizer, biogas residue drying system after disposal
State organic fertilizer.
Preferably, acceptance pool bottom, the percolate of bag-breaking device bottom collection are pumped to broken slurrying dress in the step S1
Seasoning liquid is served as in putting；The whole workshop that receives continues to maintain micro-vacuum state in pumping process in odor treating device.
Preferably, the hydraulic detention time of the buffering souring tank is 3 days；Prefermentor, after fermentation tank control anaerobism disappear
It is 35-38 DEG C to change temperature of charge scope, and hydraulic detention time is 15 days；It is 4-5 to buffer souring tank raw material discharging pH value range；Before
The raw material discharging pH value range of fermentation tank is 6.8-7.2；The raw material discharging pH value range of after fermentation tank is 7.5-8.0；After fermentation
Tank is back to buffering souring tank, the reflux ratio of prefermentor is respectively 0.5 and 0.3.
Compared with prior art, a kind of organic perishable garbage anaerobic fermentation cogeneration of heat and power biogas slurry fertilizer manufacture of the present invention and it is
System sub-elects organic matter from organic perishable house refuse based on rubbish from cooking, fruits and vegetables rubbish, by broken, slurrying by solid phase
Organic matter is converted into the hydrolysis efficiency of the lifting raw material such as pulpous state, addition bion medicament, passes through primary fermentation, after fermentation double fermentation
And the mode of partial reflux lifts biogas yield, the after fermentation discharging that digestion is more abundant, property is more stable is advantageous to biogas slurry liquid
State organic fertilizer, marsh gas power generation, biogas slurry fertilizer improve fruit/vegetable waste comprehensive energy and the level of resources utilization.
[brief description of the drawings]
Fig. 1 is a kind of schematic flow sheet of organic perishable garbage anaerobic fermentation cogeneration of heat and power biogas slurry fertilizer manufacture of the present invention.
[embodiment]
To make the purpose of the present invention, technical scheme and advantage are more clearly understood, below in conjunction with drawings and Examples, to this
Invention is further elaborated.It should be appreciated that specific embodiment described herein is used only for explaining the present invention, not
For limiting this invention.
Referring to Fig. 1, a kind of organic perishable garbage anaerobic fermentation cogeneration of heat and power biogas slurry fertilizer producing system of the present invention, including successively
The preprocessing system of connection, medium temperature wet type anaerobic fermentation system, three-stage circulating fermentation system, biogas generator cogeneration of heat and power and
Waste heat coupling utilizes system and biogas slurry organic fertilizer system；The preprocessing system includes acceptance pool, the broken bag being sequentially connected
Device, rotary screen, selection by winnowing concentration equipment, broken pulping device and sandstone weight removal device；The medium temperature wet type anaerobic fermentation
System includes buffering souring tank, prefermentor, after fermentation tank and biogas storage cabinet；The biogas generator cogeneration of heat and power and remaining
Thermal coupling includes biogas desulfurization purifier, biogas storing pressurized device, Biogas Generator Set and waste heat coupling using system
Utilize device；The biogas slurry organic fertilizer system includes biogas slurry and biogas residue separator, Liquid organic fertilizer preparation facilities and solid-state
Fertile preparation facilities.
This method by simultaneously set preprocessing system, medium temperature wet type anaerobic fermentation system, three-stage circulating fermentation system,
Biogas generator cogeneration of heat and power and waste heat coupling are using system and biogas slurry organic fertilizer system, from rubbish from cooking, fruits and vegetables rubbish
Based on organic perishable house refuse in sub-elect organic matter, solid phase organic matter is converted into by pulpous state by broken, slurrying, added
Bion medicament etc. lifts the hydrolysis efficiency of raw material, is lifted by way of primary fermentation, after fermentation double fermentation and partial reflux
Biogas yield, the after fermentation discharging that digestion is more abundant, property is more stable are advantageous to biogas slurry Liquid organic fertilizer, marsh gas power generation, natural pond
Liquid fertilizer improves fruit/vegetable waste comprehensive energy and the level of resources utilization.
Organic waste is poured in acceptance pool, and pre-treatment, the material after slurrying such as sorted, slurrying removal of impurities are pumped into slow
Souring tank is rushed, buffering souring tank discharging is pumped into prefermentor, and prefermentor discharging is pumped into after fermentation tank；Prefermentor, after fermentation
Connected between tank and surge tank, after fermentation tank material is recycled to prefermentor and surge tank in proportion；Biogas storage is produced in fermentation
In biogas storage cabinet, the emergent torch of biogas storage cabinet outlet connection and biogas desulfurization purifier, biogas desulfurization purifier
Outlet connection Biogas Generator Set entrance；Air-flotation process, return fermentation system are passed through in the biogas slurry part of after fermentation tank；Part enters
Centrifugal device, the biogas slurry of centrifugal device outlet separation prepare Liquid organic fertilizer, and the biogas residue drying of separation prepares solid organic fertilizer.
Preferably, the acceptance pool bottom of the preprocessing system is provided with screw feeding device and material toggling, feeding device；Raw material
Through bag-breaking device broken bag, pick out and be sent to rotary screen after Bulky Waste and screened；From rotary screen on the sieve based on inorganic matter
Organic matter is picked out in thing and is fed directly to broken pulping device, screenings carries out broken system again after follow-up selection by winnowing concentration equipment
Slurry.For the broken pulping device in the case where screw feeding device is persistently fed, the quartering hammer that intensity is high, running speed is fast hammers raw material into shape
Hit, crush, the raw material being crushed to less than discharging opening screen cloth diameter discharges from the screen cloth of broken pulping device bottom；Broken slurrying
Device is strong to the tolerance of inorganic content in raw material, can not hammer broken part inorganic matter and effectively be gone on screen cloth
Remove, partly the sandstone less than screen cloth diameter, small particle inorganic matter etc. pass through the follow-up desanding except weight device removes；Through broken
Slurry suspended in desanding device water, the weight such as sandstone is sunk in the cone sand trap of bottom, and slurry is in desanding device bottom
Lateral discharge hole for discharge, sandstone discharge in bottom pyramidal sand trap.
Preferably, the tank deck of the buffering souring tank in the medium temperature wet type anaerobic fermentation system and prefermentor is all reinforcing bar
Concrete structure, and the agitating device that stirring intensity greatly, is vertically fixed is configured with tank；The biogas storage cabinet is sent out after being arranged at
At the top of fermentation tank, the solid content of raw material is relatively low after primary fermentation reacts, and is also configured with stirring intensity in the after fermentation tank
Relatively low side stirring.Buffering souring tank, prefermentor, after fermentation tank configure feed inlet and outlet, raw material refluxing opening, gas discharge outlet
And agitating device, wherein buffering souring tank and the tank deck of prefermentor are reinforced concrete structure, and in tank raw material solid content
Height, the agitating device that configuration stirring intensity greatly, is vertically fixed；Collecting methane, storage cabinet are provided with the top of after fermentation, by primary fermentation
The solid content of raw material is relatively low after reaction, therefore after fermentation tank can configure the relatively low side stirring of stirring intensity, after fermentation tank material warp
Souring tank is partly refluxed to after air-flotation process, alleviates souring tank PH, reduce TS contents, lifting souring tank temperature, promote hydrolysis, can
Effectively lifting fermentation system organic loading ability.
Preferably, the prefermentor in the medium temperature wet type anaerobic fermentation system and after fermentation tank configure hydro-thermal temperature control system
System；The buffering souring tank, prefermentor, after fermentation tank configure relief valve, pH meter, redox reaction potentiometer.Pass through
Each instrument numerical value of central control system real time inspection, supervisory control system running state, abnormal alarm is set.
Preferably, the buffering souring tank receives the stench processing system in workshop with pre-treatment and is connected, prefermentor with
Gas caused by after fermentation tank anaerobic digestion is stored in the biogas storage cabinet of after fermentation tank top, the biogas in biogas storage cabinet
Clean through immature earthen sites, dry, pressurize after lead to biogas generator cogeneration of heat and power and waste heat coupling is sent out using the biogas of system
Group of motors.
Preferably, it is interconnected between the buffering souring tank, prefermentor, after fermentation tank, the material of after fermentation tank is pressed
Ratio is recycled to prefermentor and buffering souring tank；Fermentation process produces biogas storage in biogas storage cabinet, and the biogas
The emergent torch of storage cabinet exit site connection and biogas desulfurization purifier, biogas desulfurization purifier outlet connection marsh gas power generation
Unit；Air-flotation process is passed through in the biogas slurry part of after fermentation tank, and flow back medium temperature wet type anaerobic fermentation system.
A kind of organic perishable garbage anaerobic fermentation cogeneration of heat and power biogas slurry fertilizer manufacture, comprises the following steps,
S1：It will be transported by the organic perishable house refuse put on by classification to the acceptance pool of the preprocessing system；Receive
Bottom of pond charging gear even feeding, cloth；
S2：Raw material after step S1 processing sorts out Bulky Waste through bag-breaking device broken bag；Further carry out rotary screen
Screening, oversize are picked out organic waste and crushed, and screenings enters follow-up selection by winnowing concentration equipment；
S3：Raw material after sorting is broken through broken pulping device hammer, slurrying, the sieve that the raw material after crushing passes through certain pore size
Net, the inorganic matter on screen cloth are directly removed, and part sandstone in organic matter, small particle inorganic matter are mingled under sieve through sandstone weight
Removal device cleans；The fruit/vegetable waste in preprocessing system acceptance pool configuration agriculture batch market, the packed food waste put on by classification are organic
Discarded object receives passage, and raw material receives through acceptance pool, is fed, be conveyed directly to after bag-breaking device broken bag broken pulping device slurrying,
Removal of impurities, then it is pumped to fermentation system and carries out subsequent treatment；
S4：Raw material after the completion of being cleaned in step S3 is stored in the buffering souring tank of medium temperature wet type anaerobic fermentation system
In, the slurry after being homogenized, being acidified is pumped into prefermentor and carries out acidifying methanation, enters back into the further methanation of after fermentation tank；
S5：By biogas storage caused by anaerobic digestion in the step S4 in the biogas storage cabinet of after fermentation tank top,
Biogas is transported to Biogas Generator Set after purification, and caused heat energy is except for heat energy needed for forward and backward fermentation tank mesophilic digestion
Outside, cogeneration is incorporated to national grid；It is solid that biogas slurry caused by anaerobic fermentation prepares Liquid organic fertilizer, biogas residue drying system after disposal
State organic fertilizer.
Preferably, acceptance pool bottom, the percolate of bag-breaking device bottom collection are pumped to broken slurrying dress in the step S1
Seasoning liquid is served as in putting；The whole workshop that receives continues to maintain micro-vacuum state in pumping process in odor treating device.
Preferably, the hydraulic detention time of the buffering souring tank is 3 days；Prefermentor, after fermentation tank control anaerobism disappear
It is 35-38 DEG C to change temperature of charge scope, and hydraulic detention time is 15 days；It is 4-5 to buffer souring tank raw material discharging pH value range；Before
The raw material discharging pH value range of fermentation tank is 6.8-7.2；The raw material discharging pH value range of after fermentation tank is 7.5-8.0；After fermentation
Tank is back to buffering souring tank, the reflux ratio of prefermentor is respectively 0.5 and 0.3.
Rubbish containing 50%-70% organic wastes and the fruit/vegetable waste containing only partly plastic packaging are entered in acceptance pool
Material, the rubbish from cooking and market of farm produce fruit/vegetable waste put on by classification are directly entered broken slurrying dress after bag-breaking device broken bag
Put, general organic waste is selected by broken bag, big part, rotary screen screening, wherein oversize with big part melon and fruit, strip vegetables and
Based on Bulky Waste, select organic waste and deliver to broken pulping device；Screenings removes by follow-up separation device
The inorganic matters such as light plastic, magnetic sorting apparatus sub-elect metal and reclaimed, by raw material acceptance pool feed, extruding, broken bag, screening
Caused liquid is pumped to broken pulping device and serves as slurrying regulation liquid Deng during after collecting, and raw material delivers to sand after crushing slurrying
Stone weight removal device, sandstone etc. deposit in desanding tower bottom under gravity, and raw material discharges sandstone after sidepiece discharging；
Raw material after slurrying removal of impurities is pumped to the buffering souring tank of anaerobic fermentation system, passes through reinforcing in souring tank is buffered
Hydrolysis acidification generates VFA, then is pumped into prefermentor and carries out methanation, and raw material stops certain time in prefermentor
After continue to carry out depth methanation in after fermentation tank, after fermentation tank biogas slurry is partly refluxed to buffering souring tank and prefermentor, delayed
Rush souring stage and do not produce biogas, the stench processing system that caused portion gas is passed through pre-treatment workshop is handled, primary fermentation
With after fermentation caused by biogas storage in the biogas storage cabinet of after fermentation tank top.
Biogas generator cogeneration of heat and power and waste heat coupling include the desulfurization purifier of biogas, biogas generator using system
Group, steam waste heat coupling utilize device；Biogas purifies through immature earthen sites, and one section of biogas scoops out one section of very hot oven torch and connect after purification
Biogas Generator Set.Biogas slurry organic fertilizer system includes biogas slurry and biogas residue separator, and biogas slurry prepares Liquid organic fertilizer, biogas residue drying
Solid-state fertilizer processed.Biogas residue is dried, prepares solid organic fertilizer by high-temperature vapour caused by generating set, and waste heat carries out hydrothermal exchange, hair
Electric energy caused by group of motors is incorporated to national grid, and hot water caused by generating set produces stable hot water by water water- to-water heat exchanger,
Fermentation tank before the hot water in hot-water cylinder maintains, temperature needed for after fermentation are stored in, the biogas slurry separated through centrifuge is aerated, wadded a quilt with cotton
Liquid organic fertilizer is prepared after the measures such as solidifying, centrifugation.
Impurity component that the present invention contains for organic perishable discarded object is different set it is different receive passage, before improving
Treatment effeciency；Raw material is crushed into the hydrolysis acidification efficiency that slurrying improves raw material；It is warm and humid in hydrolysis acidification, primary fermentation and after fermentation
The digestion of formula full mixed anaerobic improves that the factor of created gase of raw material, biogas slurry property are more stable, preferably prepare organic fertilizer；Biogas slurry part is returned
Stream reduces the use that acidifying is mutually transitioned into the regulation liquid needed for methane phase, increases the production rate of methane of raw material；In addition, originally set
Fruit/vegetable waste anaerobic digestion techniques and Biogas Generator Set residual heat integrative are combined by meter using technology, and marsh gas power generation waste heat is
Quenched preheating, anaerobic digestion hydro-thermal process and residue drying production solid organic fertilizer, medium temperature efficient anaerobic digester temperature raising and maintaining
Thermal source is provided, energy is used adequately reasonably, and improves fruit/vegetable waste comprehensive energy and the level of resources utilization.
Compared with prior art, a kind of organic perishable garbage anaerobic fermentation cogeneration of heat and power biogas slurry fertilizer manufacture of the present invention and it is
System sub-elects organic matter from organic perishable house refuse based on rubbish from cooking, fruits and vegetables rubbish, by broken, slurrying by solid phase
Organic matter is converted into the hydrolysis efficiency of the lifting raw material such as pulpous state, addition bion medicament, passes through primary fermentation, after fermentation double fermentation
And the mode of partial reflux lifts biogas yield, the after fermentation discharging that digestion is more abundant, property is more stable is advantageous to biogas slurry liquid
State organic fertilizer, marsh gas power generation, biogas slurry fertilizer improve fruit/vegetable waste comprehensive energy and the level of resources utilization.
The embodiments of the present invention described above are not intended to limit the scope of the present invention.It is any in the present invention
Spirit and principle within the modifications, equivalent substitutions and improvements made etc., should be included in the claim protection model of the present invention
Within enclosing.
Claims (10)
- A kind of 1. organic perishable garbage anaerobic fermentation cogeneration of heat and power biogas slurry fertilizer producing system, it is characterised in that：Including what is be sequentially connected Preprocessing system, medium temperature wet type anaerobic fermentation system, three-stage circulating fermentation system, biogas generator cogeneration of heat and power and waste heat coupling Conjunction utilizes system and biogas slurry organic fertilizer system；The preprocessing system include be sequentially connected acceptance pool, bag-breaking device, roller Sieve, selection by winnowing concentration equipment, broken pulping device and sandstone weight removal device；The medium temperature wet type anaerobic fermentation system includes Buffer souring tank, prefermentor, after fermentation tank and biogas storage cabinet；The biogas generator cogeneration of heat and power and waste heat coupling profit Include biogas desulfurization purifier, biogas storing pressurized device, Biogas Generator Set and waste heat coupling with system and utilize device； The biogas slurry organic fertilizer system includes biogas slurry and biogas residue separator, Liquid organic fertilizer preparation facilities and solid-state fertilizer and prepares dress Put.
- 2. a kind of organic perishable garbage anaerobic fermentation cogeneration of heat and power biogas slurry fertilizer manufacture as claimed in claim 1 and system, its It is characterised by：The acceptance pool bottom of the preprocessing system is provided with screw feeding device and material toggling, feeding device；Raw material is through broken bag Device broken bag, pick out and be sent to rotary screen after Bulky Waste and screened；Chosen from oversize of the rotary screen based on inorganic matter Select organic matter and be fed directly to broken pulping device, screenings carries out broken slurrying again after follow-up selection by winnowing concentration equipment.
- 3. a kind of organic perishable garbage anaerobic fermentation cogeneration of heat and power biogas slurry fertilizer manufacture as claimed in claim 1 and system, its It is characterised by：The tank deck of buffering souring tank and prefermentor in the medium temperature wet type anaerobic fermentation system is all armored concrete Structure, and the agitating device that stirring intensity greatly, is vertically fixed is configured with tank；The biogas storage cabinet is arranged at after fermentation tank deck Portion, the solid content of raw material is relatively low after primary fermentation reacts, and it is relatively low to be also configured with stirring intensity in the after fermentation tank Stir side.
- 4. a kind of organic perishable garbage anaerobic fermentation cogeneration of heat and power biogas slurry fertilizer manufacture and system as described in claim 1 or 3, It is characterized in that：Prefermentor and after fermentation tank in the medium temperature wet type anaerobic fermentation system configure hydro-thermal temperature-controlling system； The buffering souring tank, prefermentor, after fermentation tank configure relief valve, pH meter, redox reaction potentiometer.
- 5. a kind of organic perishable garbage anaerobic fermentation cogeneration of heat and power biogas slurry fertilizer manufacture as claimed in claim 4 and system, its It is characterised by：The stench processing system that the buffering souring tank receives workshop with pre-treatment is connected, prefermentor and after fermentation Gas caused by tank anaerobic digestion is stored in the biogas storage cabinet of after fermentation tank top, and the biogas in biogas storage cabinet is through life Thing-chemical method removal of impurities, dry, lead to the biogas generator of biogas generator cogeneration of heat and power and waste heat coupling using system after pressurization Group.
- 6. a kind of organic perishable garbage anaerobic fermentation cogeneration of heat and power biogas slurry fertilizer manufacture as claimed in claim 1 and system, its It is characterised by：It is interconnected between the buffering souring tank, prefermentor, after fermentation tank, the material of after fermentation tank follows in proportion Ring is to prefermentor and buffers souring tank；Fermentation process produces biogas storage in biogas storage cabinet, and the biogas storage cabinet The emergent torch of exit site connection and biogas desulfurization purifier, biogas desulfurization purifier outlet connection Biogas Generator Set； Air-flotation process is passed through in the biogas slurry part of after fermentation tank, and flow back medium temperature wet type anaerobic fermentation system.
- 7. a kind of organic perishable garbage anaerobic fermentation cogeneration of heat and power biogas slurry fertilizer manufacture as claimed in claim 1 and system, its It is characterised by：The a diameter of 100mm of screen cloth of the rotary screen；The a diameter of 10mm of screen cloth of broken pulping device.
- A kind of 8. organic perishable garbage anaerobic fermentation cogeneration of heat and power biogas slurry fertilizer manufacture, it is characterised in that：Comprise the following steps,S1：It will be transported by the organic perishable house refuse put on by classification to the acceptance pool of the preprocessing system；Acceptance pool bottom Charging gear even feeding, cloth；S2：Raw material after step S1 processing sorts out Bulky Waste through bag-breaking device broken bag；Further carry out rotary screen sieve Choosing, oversize are picked out organic waste and crushed, and screenings enters follow-up selection by winnowing concentration equipment；S3：Raw material after sorting is broken through broken pulping device hammer, slurrying, and the raw material after crushing passes through the screen cloth of certain pore size, sieve Online inorganic matter directly removes, and part sandstone, the small particle inorganic matter being mingled under sieve in organic matter remove through sandstone weight Device cleans；S4：Raw material after the completion of being cleaned in step S3 is stored in the buffering souring tank of medium temperature wet type anaerobic fermentation system, passed through Slurry after homogenate, acidifying is pumped into prefermentor and carries out acidifying methanation, enters back into the further methanation of after fermentation tank；S5：By biogas storage caused by anaerobic digestion is in the biogas storage cabinet of after fermentation tank top in the step S4, biogas Biogas Generator Set is transported to after purification, caused heat energy is remaining in addition to for heat energy needed for forward and backward fermentation tank mesophilic digestion Heat generates electricity and is incorporated to national grid；Biogas slurry caused by anaerobic fermentation prepares Liquid organic fertilizer after disposal, biogas residue drying solid-state processed has Machine fertilizer.
- 9. a kind of organic perishable garbage anaerobic fermentation cogeneration of heat and power biogas slurry fertilizer manufacture as claimed in claim 8 and system, its It is characterised by：Acceptance pool bottom, the percolate of bag-breaking device bottom collection, which are pumped in broken pulping device, in the step S1 fills Work as seasoning liquid；The whole workshop that receives continues to maintain micro-vacuum state in pumping process in odor treating device.
- 10. a kind of organic perishable garbage anaerobic fermentation cogeneration of heat and power biogas slurry fertilizer manufacture as claimed in claim 8 and system, its It is characterised by：The hydraulic detention time of the buffering souring tank is 3 days；Prefermentor, after fermentation tank control anaerobic digestion material Temperature range is 35-38 DEG C, and hydraulic detention time is 15 days；It is 4-5 to buffer souring tank raw material discharging pH value range；Prefermentor Raw material discharging pH value range be 6.8-7.2；The raw material discharging pH value range of after fermentation tank is 7.5-8.0；After fermentation tank flows back Reflux ratio to buffering souring tank, prefermentor is respectively 0.5 and 0.3.
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| CN109574717A (en) * | 2019-01-23 | 2019-04-05 | 镇江市中运城市环境治理有限公司 | A kind of production method and system preparing organic fertilizer using rubbish |
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| CN109628501A (en) * | 2019-01-28 | 2019-04-16 | 北京理工水环境科学研究院有限公司 | A kind of environmental sanitation rubbish fermentation technique |
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Application publication date: 20171226 |