CN105886385B - A kind of domestic waste dry type anaerobic-aerobic combined treatment reactor and technique - Google Patents
A kind of domestic waste dry type anaerobic-aerobic combined treatment reactor and technique Download PDFInfo
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- CN105886385B CN105886385B CN201410742317.2A CN201410742317A CN105886385B CN 105886385 B CN105886385 B CN 105886385B CN 201410742317 A CN201410742317 A CN 201410742317A CN 105886385 B CN105886385 B CN 105886385B
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- 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
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Abstract
The invention belongs to field of solid waste treating technology, more particularly to a kind of the aerobic combination treatment reactor of domestic waste dry type anaerobism one and technique.Combined treatment reactor is made up of dry type anaerobic reaction area and aerobic reactor zone two parts, domestic waste first passes through dry type anaerobic reaction area, caused biogas is discharged through exhaust outlet, and caused biogas residue enters aerobic reactor zone, and last caused organic fertilizer is discharged from the bottom of aerobic reactor zone.Combined treatment process is made up of pretreating process, dry type anaerobic treatment process and aerobic treatment process three parts, domestic waste is cleaned by pretreating process after slurrying, into dry type anaerobic treatment process, biogas caused by anaerobic reaction is used to generate electricity or heat supply, caused biogas slurry is recycled, and high-quality organic fertilizer is made by aerobic treatment process in caused biogas residue.
Description
Technical field
The invention belongs to field of solid waste treating technology, more particularly to a kind of domestic waste dry type anaerobism-good
Oxygen combined treatment reactor and technique.
Background technology
With Chinese society expanding economy and the quickening of urbanization process, the yield of domestic waste increases rapidly
Add.Domestic waste has the characteristics that complicated composition, yield and generation characteristic are changeable, thus turns into noxious waste pollution
The primary pollution source of environment.Because Municipal Domestic Garbage Output is big, there is potential eutrophication to health and ecological environment,
The processing of domestic waste has caused the extensive concern of the domestic and international public and government.
Conventional urban garbage disposal mainly includes landfill, burning and biological treatment etc. with disposal technology.However, defend
Raw Landfill processing cost is low, simple, but can not realize the recycling of domestic waste.The minimizing of incineration technology and
Innoxious effect is preferable, but can produce flue dust and pernicious gas pollution, and incineration technology is for the low urban life of calorific value
It is the significant wastage to resource for rubbish.Seek other more suitable Disposal of Municipal Refuse has turned into inevitable.
Due to containing large amount of biomass energy in domestic waste, its High water cut characteristic is the biology of this kind of discarded object again
Energy conversion provides advantage, effectively using this kind of biomass energy, to realizing that environment and economic sustainable development have
It is significant.Turn into one of focus paid close attention to both at home and abroad for the anaerobic-aerobic treatment technology of city organic solid castoff.
Domestic waste is handled using anaerobic digestion techniques, can not only realize the innoxious place to domestic waste
Reason, but also biogas can be reclaimed, caused biogas can be used for heat production, generating, supply natural gas or as motor vehicle fuel, subtract
The discharge of few greenhouse gases.
According to solid holdup (TS) difference, the anaerobic digestion of domestic waste be divided into wet type (TS is 5%~15%) and
Two kinds of dry type (TS is 15%~40%).The anaerobic digestion engineering for being completed operation uses wet type anaerobic digestion more.Wet type anaerobism
Digestion reactor volume is big, and factor of created gase is relatively low, and dilution fermentation substrate water consumption is big, has both added the operating cost of technique, again
Waste water resource, it can also produce a large amount of biogas slurries.And the processing load that dry anaerobic digestion technology can reach is high, caused biogas slurry amount
Few, the reactor volume that the domestic rubbish disposal of unit mass needs is small.
Domestic waste dry-type anaerobic fermentation process can produce a large amount of biogas residues, if secondary pollution can be caused by dealing with improperly.
It is the reason for carrying out aerobic compost containing more comprehensive nutriment and abundant organic matter but biogas residue is undegradable organic matter
Think raw material.Therefore, by biogas residue progress caused by house refuse dry-type anaerobic fermentation, further aerobic harmless treatment is very necessary.
At present, anaerobic digestion and aerobic composting technology are all applied to the processing of domestic waste, however, due to city
The composition complexity of house refuse, it is often ineffective by single anaerobic digestion or aerobic technical finesse domestic waste,
Minimizing and recycling limitation.
In view of single anaerobic digestion and the respective limitation of aerobic composting technology, it is proposed that a kind of domestic waste
Dry type anaerobic-aerobic combined treatment reactor and technique, improve the recycling of urban garbage disposal, minimizing and innoxious
Effect.
The content of the invention
The invention provides a kind of recycling that can improve domestic waste, minimizing and innoxious effect, operation
Operation and maintenance are simple, the investment domestic waste dry type anaerobic-aerobic combined treatment reactor low with operating cost and work
Skill.
The purpose of the present invention is achieved through the following technical solutions：
A kind of domestic waste dry type anaerobic-aerobic combined treatment reactor of the present invention, by dry type anaerobic reaction area
Formed with aerobic reactor zone two parts, domestic waste first passes through dry type anaerobic reaction area, and caused biogas is arranged through exhaust outlet
Go out, caused biogas residue enters aerobic reactor zone, and last caused organic fertilizer is discharged from the bottom of aerobic reactor zone.Wherein：
A perforated retainer is provided with dry type anaerobic reaction area；A natural pond is provided with the outer wall of dry type anaerobic reaction area bottom
Liquid return duct, biogas slurry return duct are connected with alkali liquid tank, heat exchanger, biogas slurry reflux pump and biogas slurry backflow spray equipment, biogas slurry backflow
Spray equipment is flowed back shower provided with biogas slurry at the top of anaerobic reaction area, and biogas slurry flows back shower with same clockwise or inverse
Hour hands incline direction is evenly arranged on biogas slurry backflow spray equipment；A natural pond is provided with the side wall of dry type anaerobic reaction area bottom
Slag discharge pipe, biogas residue discharge pipe is located at the part in dry type anaerobic reaction area and tilted down below insertion surface of material, with level
Between 30 °~60 ° of angle between line；Temperature monitor, pH detectors are provided with the side wall in the middle part of dry type anaerobic reaction area
With ORP detectors；A feed pipe is provided with the side wall on dry type anaerobic reaction area top, feed pipe is connected with feed pump and material
Tank is adjusted, material regulation tank is provided with material regulation agitator；Be provided with the outer wall at the top of dry type anaerobic reaction area blast pipe and
Safety valve；
Aerobic reactor zone is placed in certain angle of inclination, and its angle between horizontal plane is between 20 °~40 °；Good
The outer wall of oxygen reaction zone is provided with a heat-insulation layer, and a biogas slurry delivery pipe is provided with the top of heat-insulation layer, and biogas slurry delivery pipe is connected with one
Biogas slurry delivery pump, a biogas slurry efferent duct is provided with the bottom of heat-insulation layer, and biogas slurry efferent duct is connected with biogas slurry return duct；Aerobic anti-
A discharge nozzle is provided with the outer wall of Ying Qu bottoms；An exhaust duct is provided with the side wall in the middle part of aerobic reactor zone；In aerobic reaction
A biogas residue feed pipe is provided with the side wall on area top, biogas residue feed pipe is connected with a biogas residue feed pump；At the top of aerobic reactor zone
Outer wall on be provided with a ventilation duct, ventilation duct is connected with a blower fan.
A kind of domestic waste dry type anaerobic-aerobic combined treatment process of the present invention, is detested by pretreating process, dry type
Oxygen handling process and aerobic treatment process three parts composition, domestic waste initially enter pretreating process, pass through people's work point
After the primary sorting such as choosing, magnetic separation sorts out the metal in domestic waste and large scale foreign substances, cracking and sorting is carried out,
So that the light materials such as plastics, fiber sort out, domestic waste is then put into slurrying separation circuit, by urban life rubbish
Rubbish is further broken up into fermented slurry of the grain diameter in below 10mm, and sub-elects light materials, and fermented slurry is put into desanding
Process is homogenized, after removing the little particle heavy substances such as sandstone, fermented slurry enters dry type anaerobic treatment process, and tank is adjusted by material
Fermented slurry is inoculated with and adjusts its solid holdup, the fermented slurry regulated enters the dry type of combined reactor described above
Anaerobic reaction area, dry-type anaerobic fermentation, caused biogas are carried out under medium temperature (30 DEG C~40 DEG C) or high temperature (50 DEG C~65 DEG C)
From the exhaust outlet discharge at the top of anaerobic reaction area, a caused biogas slurry part is used for return stirring, and a part is used for aerobic reaction
Temperature raising and maintaining, caused biogas residue enters aerobic treatment process, the aerobic reactor zone of combined reactor described above put into, in height
Aerobic fermentation is carried out at 50 DEG C~60 DEG C of temperature, caused organic fertilizer is discharged from the discharge nozzle of aerobic reactor zone bottom.
Described biogas slurry return stirring is to be pumped into dry type anaerobic reaction again after backflow biogas slurry is first passed through into heating, alkaline cleaning
Area carries out spray stirring, with reaction temperature, pH and the stirring intensity for causing anaerobic fermentation to keep suitable；
The described biogas slurry for aerobic reaction temperature raising and maintaining first passes through heat after be pumped into the guarantor of aerobic reactor zone again
Warm layer, with the reaction temperature for causing aerobic fermentation to keep suitable.
It is characteristic of the invention that the main body of urban garbage disposal reactor is by dry type anaerobic reaction area and aerobic reaction
Area's two parts composition, they act synergistically completes the degraded of domestic waste jointly.Domestic waste initially enters dry type
Anaerobic reaction area, biogas slurry backflow spray equipment is provided with the top of the area, can realize simultaneously anaerobic reaction area stirring and temperature and
PH regulation.Biogas slurry backflow shower on biogas slurry backflow spray equipment is uniformly arranged with same incline direction clockwise or counterclockwise
Row, can be such that material is rotated towards same direction, realize the stirring to material；Before biogas slurry backflow, detected by pH detectors
Anaerobic reaction area pH value, if fermentation reaction is in acidifying state, the alkali lye in alkali liquid tank is added in backflow biogas slurry, passes through backflow
The pH value of biogas slurry spray regulation fermentation materials；In addition, also anaerobic reaction area temperature can be detected by temperature monitor, pass through heat exchange
The regulation and control of device are heated to backflow biogas slurry, and then the fermentation temperature in dry type anaerobic reaction area is adjusted when backflow biogas slurry sprays
Degree.Biogas residue caused by dry type anaerobic reaction area enters aerobic reactor zone, and area's outer wall is provided with a heat-insulation layer, and biogas slurry passes through heat exchanger
Heat-insulation layer is injected after heating, while aerobic reaction temperature is ensured, realizes recycling for biogas slurry.
Domestic waste dry type anaerobic-aerobic combined treatment process by pretreating process, dry type anaerobic treatment process and
Aerobic treatment process three parts form, and domestic waste initially enters pretreating process, by returning in domestic waste
To receive material and other impurities are separated, fermented slurry of the grain diameter in below 10mm is made in remaining domestic waste,
Enter dry type anaerobic treatment process after desanding is homogeneous, the biogas of anaerobic reaction production is used to generate electricity or heat supply；Caused biogas slurry
A part is used for anaerobic reaction backflow spray, and a part is used for aerobic reaction and is incubated；Caused biogas residue enters aerobic treatment process,
High-quality organic fertilizer is made through aerobic compost reaction.
The present invention is recycled biogas slurry caused by domestic waste dry type anaerobic reaction, and biogas residue carries out aerobic heap
Fertilizer, domestic waste can be made thoroughly to be degraded, while realize the recycling of biogas residue and biogas liquid, avoided secondary
Pollution, structure of reactor is compact, and floor space is small, and technological process is succinctly apparent, and operation operation and maintenance are simple, investment and operation
Expense is low.
The invention has the advantages that：
1. the anaerobic fermentation processing and aerobic compost treatment by domestic waste combine, a kind of urban life rubbish is developed into
Rubbish dry type anaerobic-aerobic combined treatment reactor and technique.The structure of reactor is compact, and floor space is small, and technological process is succinct
Apparent, operation operation and maintenance are simple, and investment is low with operating cost.
2. biogas slurry caused by dry type anaerobic reaction area is all recycled, a part is after adding alkali, heat
Biogas slurry backflow spray equipment is flowed into, temperature, pH and the stirring intensity of anaerobic reaction is kept in the ideal range；A part is passed through
Heat-insulation layer is flowed into after heating, to ensure that aerobic compost reaction is carried out under constant high temperature.
3. biogas residue caused by dry type anaerobic reaction area enters aerobic reactor zone, aerobic compost reaction is carried out, biogas residue can be achieved
Recycling, and avoid secondary pollution.
Brief description of the drawings
Fig. 1 combined reactor structural representations of the present invention.
The biogas slurry backflow spray equipment structural representation of Fig. 2 combined reactors of the present invention.
The biogas slurry backflow spray equipment top view of Fig. 3 combined reactors of the present invention.
Reference
1. the material regulation tank 2. material regulation feed pump of agitator 3.
4. the blast pipe of 5. safety valve of feed pipe 6.
The dry type anaerobic reaction area of the spray equipment 9. 7. biogas slurry of biogas slurry delivery pump 8. flows back
10. the biogas slurry reflux pump of 11. biogas slurry return duct of biogas slurry backflow shower 12.
13. the temperature monitor of 14. alkali liquid tank of heat exchanger 15.
The perforated retainer of 16.pH detector 17.ORP detectors 18.
19. the biogas slurry efferent duct of 20. biogas residue feed pump of biogas residue discharge pipe 21.
22. the blower fan of 23. exhaust duct of discharge nozzle 24.
25. the aerobic reactor zone of 26. biogas slurry delivery pipe of ventilation duct 27.
28. the biogas residue feed pipe of heat-insulation layer 29.
Embodiment
Embodiment 1.
Refer to Fig. 1.A kind of domestic waste dry type anaerobic-aerobic combined treatment reactor, is divided into anaerobic reaction area 9
With the two parts of aerobic reactor zone 27.
A perforated retainer 18 is provided with dry type anaerobic reaction area 9；It is provided with the outer wall of the bottom of dry type anaerobic reaction area 9
One biogas slurry return duct 11, biogas slurry return duct 11 are connected with alkali liquid tank 14, heat exchanger 13, biogas slurry reflux pump 12 and biogas slurry backflow spray
Device 8, biogas slurry flow back spray equipment 8 at the top of anaerobic reaction area 9, are flowed back shower 10 provided with biogas slurry, biogas slurry backflow spray
Pipe 10 is evenly arranged on biogas slurry backflow spray equipment 8 with same incline direction clockwise or counterclockwise；In dry type anaerobic reaction
A biogas residue discharge pipe 19 is provided with the side wall of the bottom of area 9, the part that biogas residue discharge pipe 19 is located in dry type anaerobic reaction area 9 is downward
Tilt below insertion surface of material, between 30 °~60 ° of the angle between horizontal line；In the side at the middle part of dry type anaerobic reaction area 9
Wall is provided with temperature monitor 15, pH detectors 16 and ORP detectors 17；Opened in the side wall on the top of dry type anaerobic reaction area 9
There is a feed pipe 4, feed pipe 4 is connected with feed pump 3 and material regulation tank 1, and material regulation tank 1 is provided with material regulation agitator 2；
Blast pipe 6 and safety valve 5 are provided with the outer wall at the top of dry type anaerobic reaction area 9：
Aerobic reactor zone 27 is placed in certain angle of inclination, and its angle between horizontal plane is between 20 °~40 °；
The outer wall of aerobic reactor zone 27 is provided with a heat-insulation layer 28, and a biogas slurry delivery pipe 26, biogas slurry conveying are provided with the top of heat-insulation layer 28
Pipe 26 is connected with a biogas slurry delivery pump 7, and a biogas slurry efferent duct 21, biogas slurry efferent duct 21 and biogas slurry are provided with the bottom of heat-insulation layer 28
Return duct 11 connects；A discharge nozzle 22 is provided with the outer wall of the bottom of aerobic reactor zone 27；In the side at the middle part of aerobic reactor zone 27
An exhaust duct 23 is provided with wall；A biogas residue feed pipe 29, biogas residue feed pipe 29 are provided with the side wall on the top of aerobic reactor zone 27
It is connected with a biogas residue feed pump 20；A ventilation duct 25 is provided with the outer wall at the top of aerobic reactor zone 27, ventilation duct 25 is connected with
One blower fan 24.
Pretreated domestic waste input material is adjusted in tank 1, will in the presence of material adjusts agitator 2
Urban life and biogas residue are sufficiently mixed, and complete to be inoculated with, and the material formed after inoculation is in the presence of feed pump 3 from charging
Pipe 4, which is pumped into dry type anaerobic reaction area 9, carries out dry anaerobic digestion reaction, and material moves from top to bottom by gravity；In material
In fermentation process, a biogas slurry part for generation is flowed back by the effect of biogas slurry reflux pump 12 through biogas slurry return duct 11 and heat exchanger 13
It is remaining to be pumped into compost reactor through biogas slurry delivery pipe 26 in the presence of biogas slurry delivery pump 7 to biogas slurry backflow spray equipment 8
Heat-insulation layer 28.Before biogas slurry backflow, the pH value of material can be detected by pH detectors 16, if material pH value is less than 6, can confirm to send out
Ferment reaction is in acidifying state, can now add the alkali lye in alkali liquid tank 14 in backflow biogas slurry, to adjust the pH of backflow biogas slurry
It is worth, and then the pH value of fermentation materials is adjusted when backflow biogas slurry sprays；In addition, also reactor can be detected by temperature monitor 15
Interior fermentation temperature, and realize that the heating to backflow biogas slurry is heated by the regulation and control of heat exchanger 13, and then sprayed in backflow biogas slurry
When adjust reactor in fermentation temperature；After biogas slurry is pumped into biogas slurry backflow spray equipment 8, sprayed through biogas slurry backflow shower 10
On fermentation materials, biogas slurry backflow shower is evenly arranged in biogas slurry backflow spray dress with same incline direction clockwise or counterclockwise
Put and (refer to Fig. 2 and Fig. 3), material can be made to be rotated towards same direction, so as to realize the stirring to material；The natural pond of generation
Slag is partly into material regulation tank 1, and the remaining effect by biogas residue feed pump 20 is pumped into aerobic reactor zone 27 to enter to act charitably
Oxygen compost is reacted, and aerobic reactor zone 27 is placed in certain angle of inclination, and biogas residue flows from top to bottom by Action of Gravity Field, blower fan 24
Caused air-flow is passed through aerobic reactor zone by ventilation duct 25, then is discharged through exhaust duct 23, it is ensured that the good of aerobic compost is led to
Wind, the biogas slurry after heating flow at the top of heat-insulation layer 28, bottom outflow, it is ensured that the temperature needed for aerobic fermentation, generation
Organic fertilizer discharged eventually through discharge nozzle 22；The biogas of generation can discharge through blast pipe 6.
, can be in medium temperature (30 DEG C~40 DEG C) or high temperature (50 during using combinations thereof reactor for treatment domestic waste
DEG C~65 DEG C) under the conditions of carry out anaerobic fermentation, carry out aerobic fermentation at 50 DEG C~60 DEG C of high temperature, can handle solid holdup is
15%~40% fermentation materials.
A kind of domestic waste dry type anaerobic-aerobic combined treatment process, is divided into pretreating process, dry type Anaerobic Treatment
Technique and aerobic treatment process three parts.Concrete operation method：
Domestic waste initially enters pretreating process, by artificial separation and magnetic separation by the gold in domestic waste
After category and large scale foreign substances sort out, domestic waste carries out cracking and sorting again, and the light materials such as plastics, fiber are sorted
Out, the domestic waste after cracking and sorting subsequently enters slurrying separation circuit, and domestic waste is further crushed
Into grain diameter in below 10mm fermented slurry, and light materials are sub-elected, obtained fermented slurry subsequently enters desanding homogenate
Process, enter dry type anaerobic treatment process after removing the little particle heavy substances such as sandstone；Fermented slurry is introduced into material regulation tank, right
Fermented slurry is inoculated with and adjusts its solid holdup, and deployed fermented slurry is put into combined reactor provided by the present invention
Dry type anaerobic reaction area, fermented under medium temperature (30 DEG C~40 DEG C) or high temperature (50 DEG C~65 DEG C), formation high concentration biogas,
Biogas residue and biogas slurry, the biogas of generation can be used for generating electricity or carries out heat supply as fuel；A biogas slurry part for generation by heating, plus
Backflow spray is carried out after alkali process, it is remaining by heating for temperature, pH and the stirring needed for regulating and controlling anaerobic fermentation reaction
The heat-insulation layer of aerobic reactor zone is pumped into after reason, for controlling the temperature needed for aerobic fermentation reaction；A biogas residue part for generation is returned
It is remaining to enter aerobic treatment process for the inoculation of fermented slurry, put into the aerobic anti-of combined reactor provided by the present invention
Area is answered, aerobic fermentation is carried out at 50 DEG C~60 DEG C of high temperature, forms high-quality organic fertilizer.
Claims (4)
- A kind of 1. domestic waste dry type anaerobic-aerobic combined treatment reactor, by dry type anaerobic reaction area and aerobic reaction Area's two parts composition, it is characterized in that：A perforated retainer is provided with dry type anaerobic reaction area；A biogas slurry is provided with the outer wall of dry type anaerobic reaction area bottom to return Flow tube, biogas slurry return duct are connected with alkali liquid tank, heat exchanger, biogas slurry reflux pump and biogas slurry backflow spray equipment, biogas slurry backflow spray Device is flowed back shower provided with biogas slurry at the top of anaerobic reaction area, biogas slurry flow back shower with it is same clockwise or counterclockwise Incline direction is evenly arranged on biogas slurry backflow spray equipment；Biogas residue row is provided with the side wall of dry type anaerobic reaction area bottom Outlet pipe, biogas residue discharge pipe is located at the part in main body fermentation tank and tilted down below insertion surface of material, between horizontal line Between 30 °~60 ° of angle；Temperature monitor, pH detectors and ORP detections are provided with the side wall in the middle part of dry type anaerobic reaction area Instrument；A feed pipe is provided with the side wall on dry type anaerobic reaction area top, feed pipe is connected with feed pump and material regulation tank, thing Material regulation tank is provided with material regulation agitator；Blast pipe and safety valve are provided with the outer wall at the top of dry type anaerobic reaction area；Aerobic reactor zone is placed in certain angle of inclination, and its angle between horizontal plane is between 20 °~40 °；Aerobic anti- Answer the outer wall in area to be provided with a heat-insulation layer, a biogas slurry delivery pipe is provided with the top of heat-insulation layer, biogas slurry delivery pipe is connected with a biogas slurry Delivery pump, a biogas slurry efferent duct is provided with the bottom of heat-insulation layer, and biogas slurry efferent duct is connected with biogas slurry return duct；In aerobic reactor zone A discharge nozzle is provided with the outer wall of bottom；An exhaust duct is provided with the side wall in the middle part of aerobic reactor zone；On aerobic reactor zone A biogas residue feed pipe is provided with the side wall in portion, biogas residue feed pipe is connected with a biogas residue feed pump；It is outer at the top of aerobic reactor zone A ventilation duct is provided with wall, ventilation duct is connected with a blower fan.
- 2. a kind of combined reactor using described in claim 1 carries out the technique of urban garbage disposal, by pretreatment work Skill, dry type anaerobic treatment process and aerobic treatment process three parts composition, it is characterized in that：Domestic waste initially enters pre- place Science and engineering skill, the metal in domestic waste and large scale foreign substances are sorted out by artificial separation, magnetic separation primary sorting Afterwards, cracking and sorting is carried out, so that plastics, fiber light materials sort out, then by domestic waste input slurrying separation work Sequence, domestic waste is further broken up into fermented slurry of the grain diameter in below 10mm, and sub-elects light materials, will sent out Ferment slurries input desanding homogenate process, after removing sandstone little particle heavy substance, fermented slurry enters dry type anaerobic treatment process, leads to Cross material regulation tank to be inoculated with fermented slurry and adjust its solid holdup, the fermented slurry regulated enters the composite reaction The dry type anaerobic reaction area of device, carries out dry-type anaerobic fermentation at 30 DEG C~40 DEG C or 50 DEG C~65 DEG C, and caused biogas is from dry Exhaust outlet discharge at the top of formula anaerobic reaction area, a caused biogas slurry part are used for return stirring, and a part is used for aerobic reaction Temperature raising and maintaining, caused biogas residue enters aerobic treatment process, the aerobic reactor zone of the combined reactor put into, in high temperature 50 DEG C~60 DEG C at carry out aerobic fermentation, caused organic fertilizer is discharged from the discharge nozzle of aerobic reactor zone bottom.
- 3. technique according to claim 2, it is characterized in that：Described biogas slurry return stirring is to first pass through backflow biogas slurry to add Dry type anaerobic reaction area is pumped into again to carry out spray stirring after heat, alkaline cleaning, with the reaction for causing anaerobic fermentation to keep suitable Temperature, pH and stirring intensity.
- 4. technique according to claim 2, it is characterized in that：The described biogas slurry for aerobic reaction temperature raising and maintaining first passes through The heat-insulation layer of aerobic reactor zone is pumped into after heating again, with the reaction temperature for causing aerobic fermentation to keep suitable.
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| CN101654321A (en) * | 2008-08-21 | 2010-02-24 | 中国农业大学 | Dry manure two-phase anaerobic digestion system for pig farm |
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| CN202164295U (en) * | 2011-07-22 | 2012-03-14 | 山东鲁抗舍里乐药业有限公司 | Circular spray-type aerobic fermentation device |
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