CN102441557B - Aerobic-anaerobic combined solid state fermentation device and fermentation method thereof - Google Patents

Aerobic-anaerobic combined solid state fermentation device and fermentation method thereof Download PDF

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CN102441557B
CN102441557B CN2011103229818A CN201110322981A CN102441557B CN 102441557 B CN102441557 B CN 102441557B CN 2011103229818 A CN2011103229818 A CN 2011103229818A CN 201110322981 A CN201110322981 A CN 201110322981A CN 102441557 B CN102441557 B CN 102441557B
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bed
fermentation
aerobic fermentation
anaerobic
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CN102441557A (en
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张光义
余剑
张聚伟
许光文
汪印
李望良
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Institute of Process Engineering of CAS
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    • 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
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    • C12M21/00—Bioreactors or fermenters specially adapted for specific uses
    • C12M21/16—Solid state fermenters, e.g. for koji production
    • 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
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    • 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
    • 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
    • Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse

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Abstract

The invention relates to a solid state aerobic-anaerobic combined fermentation device used for drying/composting of industrial biomass waste. The device comprises a solid state anaerobic fermentation bed at the center and a solid aerobic fermentation bed at the periphery of the solid state anaerobic fermentation bed, with the two fermentation beds separated by a heat-conducting plate. The bottom of the solid state anaerobic fermentation bed is provided with an anaerobic sludge backflow system, and the top is equipped with a produced gas collection system that is in connection with a dynamic heat supply system. The invention also provides an aerobic-anaerobic combined solid state fermentation method utilizing the above device. The device and method of the invention makes fully use of the calorific power of an aerobic fermentation process to supply the heat consumption for anaerobic fermentation of the other part of raw materials, thus realizing total drying or composting of industrial biomass waste. The device and method provided in the method have the advantages of wide application scope, complete material treatment, no secondary pollution, strong environmental adaptability, and obvious resource utilization effect, etc.

Description

A kind of aerobic-anaerobic combined solid state fermentation device and fermentation process
Technical field
The present invention relates to a kind of device and fermentation process that can be used for the aerobic-anaerobic combined solid state fermentation of biomass castoff drying or compost, belong to the changing waste into resources application.
Background technology
Solid state fermentation is the fermentation mode of microorganism on the solid state substrate that there is no or substantially do not have free water, gas, liquid, solid three-phase and depositing in solid state substrate, namely contain in porous solid state substrate water and water-insoluble materials with.Compare with liquid state fermentation, solid state fermentation has following advantage: 1, water activity is low, and the matrix water-insoluble is high, and microorganism easily grows, and enzyme activity is high, and enzyme system is abundant; 2, sweat is extensive, does not need strict aseptic condition; 3, simple in equipment, small investment, energy consumption are low, easy to operate; 4, post processing is easy, pollution is few, basic non-wastewater discharge.
In fermentation technical field, with respect to liquid state fermentation, solid state fermentation is overcome gradually because of many drawbacks that its conventional art exists, and advantage is more and more obvious, is just paid close attention to day by day widely, is being applied to aspect the abandoned biomass resource especially.
Wherein, solid anaerobic digestion has become a hot spot technology of the special biomass castoff energy of living beings at present: anaerobic fermentation process is that anaerobe is to the reduction decomposition effect of living beings, its product is a kind of efficient, clean energy resource, i.e. biogas take methane as main component.In general, activity and the reduction process of anaerobe need consumption of calorie, and the biogas that is usually produced by combustion parts is supplied.Another solid-state fermentation technology---solid-state aerobic fermentation is that aerobic microbiological is to organic oxidation, components of biomass resolves in the process of humus slowly release heat, usually in addition cooling in modes such as stirring, ventilations, the moisture of fermentation materials is evaporated gradually, and material is able to drying.Solid-state aerobic fermentation often is directly used in the biomass castoff compost, or be used as anaerobic fermentation sludge composting technology (being solid anaerobic digestion-aerobic compost technology) after concentration, be able to successfully use widely in the processing of biomass castoff such as domestic waste at present.Because having the advantages such as operating temperature is low, energy consumption is low, effect is remarkable, the one preferred technique of the key link drying that solid-state aerobic fermentation Chang Zuowei biomass waste utilizes is subject to the favor of living beings industry numerous enterprises.
But, turn to main purpose solid anaerobic digestion process with the production biogas energy and can produce high moisture mud, generally need just can carry out solid-state aerobic fermentation drying/compost after concentrated, and can producing a large amount of height usually, concentration process contains organic waste water, need special sewage treatment facility to process, this problem causes it environmental requirement to be arranged especially but medium-sized and small enterprises inner being difficult for of being not suitable for building sewage treatment facility realizes in a lot of occasions; And aerobic fermentation drying/composting process needs mechanical system (as stirring, air blast) to come homogenizing material, release heat usually, consequently, being the waste (release of low-temperature heat quantity) of tow taste heat on the one hand, is the demand (being used for the driving device motion) to the high-grade energy consumption on the one hand.Therefore, give full play to solid anaerobic digestion and solid-state aerobic fermentation characteristics separately, farthest avoid or balance their unfavorable aspect, will greatly improve comprehensive benefit and the practicality of solid-state fermentation technology.
Summary of the invention
The present invention is directed to the problem that prior art exists, proposed a kind of light industry biomass castoff that can be used for and realized dry and then be beneficial to its follow-up resource or directly be used as solid-state Aerobic-anaerobic combined ferment device and the fermentation process that compost is produced organic fertilizer.
One of purpose of the present invention is to provide a kind of aerobic-anaerobic combined solid state fermentation device, comprise the solid anaerobic digestion bed that is positioned at central authorities and the solid-state aerobic fermentation bed of solid anaerobic digestion bed periphery, separate with heat-conducting plate between the two, can take full advantage of the tow taste heat that the solid-state aerobic fermentation process produces, provide heat by good heat conduction for the solid anaerobic digestion process; Described solid anaerobic digestion bed bottom is provided with the anaerobic sludge return-flow system, pass the solid anaerobic digestion bed from bottom to top, its end is divided into two-way, access respectively solid anaerobic digestion bed and solid-state aerobic fermentation bed, mud is mainly by outside aerobic drying/compost, and part is used for inoculation and the stirring of anaerobic fermentation process; The top is provided with the aerogenesis gathering system, is connected with the power heating system; The heat supply pipeline of described power heating system passes the solid anaerobic digestion bed from bottom to top, and is uniformly distributed in the inner peripheral wall of solid anaerobic digestion bed.
Be provided with supporting construction bottom solid anaerobic digestion bed of the present invention and solid-state aerobic fermentation bed.
Anaerobic sludge return-flow system of the present invention comprises anaerobic sludge return duct, sludge pump and anaerobic sludge delivery pipe.
Solid anaerobic digestion bed of the present invention top is provided with charging aperture, and the bottom is set to taper, is beneficial to the discharge of mud, is connected with the anaerobic sludge delivery pipe.
Described solid-state aerobic fermentation bed comprises charging and inoculates the aerobic fermentation bed stirring system on edge on district, bottom discharge mouth and fermentation bed.Wherein, be provided with the sawtooth grooves track on the platform of described aerobic fermentation bed stirring system, described platform is connected with a walking in a horizontal state wheel shaft; Described horizontal line travelling wheel can be walked along the sawtooth grooves track cross level by the walking in a horizontal state motor-driven; Along being provided with the scraper plate agitator, driven by stirring motor under described platform; The platform bottom is equipped with directive wheel.Described walking in a horizontal state motor and stirring motor all are fixed on the stirring system platform.
Described scraper plate agitator upper end is connected to the stirring system platform by the scraper plate bracing frame, and the lower end is connected on the stirring system platform forwardly by halyard; Be provided with a plurality of dentation hooks on the scraper plate agitator.
Aerobic fermentation bed stirring system has been arranged band tooth scraper plate agitator, can realize spinning upside down, mixing thoroughly of material; Aerobic fermentation bed stirring system has been arranged halyard, is used for regulating the height that stirs, and also plays the stressed effect of scraper plate bracing frame that disperseed; Aerobic fermentation bed stirring system adopts double wedge shape road wheel and sawtooth grooves track, can promote the fermentation materials walking in a horizontal state, is convenient to charging and discharging, and controls stirring intensity and the time of staying of material.
Another object of the present invention is to provide a kind of aerobic-anaerobic combined solid state fermentation method, it is characterized in that, comprise the following steps:
1) start solid-state aerobic fermentation
Vaccinated material is put into the solid-state aerobic fermentation bed through charging and inoculation district carry out aerobic fermentation, after treating that fermentation is completed, discharge from the bottom discharge mouth, then put into fresh material, and take out a certain amount of combined inoculation with it by inoculation ratio 0.2～0.3 from the corruption material of completing aerobic fermentation, begin new aerobic fermentation process, push away before with the material of putting into the scraper plate agitator subsequently, repeat the charging seeded process, until complete the replacing of material in whole aerobic fermentation bed, the solid-state aerobic fermentation bed begins normal operation;
2) start solid anaerobic digestion
After the normal startup of solid-state aerobic fermentation bed, vaccinated material is put into the solid anaerobic digestion bed by charging aperture, after treating that fermentation is completed, shifting the anaerobic fermentation product by the anaerobic sludge return-flow system distinguishes to the charging of aerobic fermentation bed and inoculation, treat material or the inoculum of aerobic fermentation as part, replenish simultaneously fresh material to the solid anaerobic digestion bed, so repeatedly, until complete replacing and the normal operation of beginning of material in whole solid anaerobic digestion bed;
The biogas that produces in the solid anaerobic digestion bed is after the aerogenesis gathering system is carried and purified, supply with the burning of power heating system, produce steam, for aerobic fermentation bed stirring system provides energy consumption, residual water vapor can be used for adding the heat supply pipeline of heat power heating system.
Inoculation ratio in described startup aerobic fermentation step is preferably 0.25.
Compare with the prior art scheme, the present invention has following beneficial effect:
Device involved in the present invention has been realized organic associating of solid-state Aerobic-anaerobic fermentation, take full advantage of the tow taste heat that the solid-state aerobic fermentation process produces, provide heat by good heat conduction for the solid anaerobic digestion process, and the biogas that anaerobic fermentation produces is by the boiler internal combustion in the heating warm-keeping system, produce high-temperature vapor, the generating of driving steam-driven generator, mechanical energy consumption with supply aerobic fermentation process, residual steam can heat reflux line, replenishes the warming of the extra hear rate of anaerobic fermentation process and extreme low temperature condition lower device by heat supply pipeline.The input ratio of the material by rational fermentation bed structural design and optimization, make high water-containing sludge that anaerobic fermentation process produces can full dose add in the aerobic fermentation material and digested fully by the aerobic fermentation process together, thereby thoroughly avoided the discharging of secondary wastewater.
This device and corresponding technical scheme can adapt to all kinds of places that produce biomass waste, need not extra energy consumption, even produce electric energy more than needed, and environmental suitability is strong, non-secondary pollution.Particularly for the middle-size and small-size light industry living beings enterprise of pursuing the residual biomass resource, this device can as a kind of living beings drying equipment of efficient, low energy consumption, comprise that for the follow-up realization of biomass waste the multiple resources process of composting organic fertilizer provides support.
Description of drawings
Accompanying drawing 1 is aerobic-anaerobic combined solid state fermentation device top view of the present invention;
Accompanying drawing 2 is that Figure 1A-A is to generalized section;
Accompanying drawing 3 aerobic fermentation bed of the present invention stir system design schematic diagram.
In figure:
1-solid-state aerobic fermentation bed, 2-solid anaerobic digestion bed, 3-aerobic fermentation bed discharging opening, the bed charging of 4-aerobic fermentation and inoculation are distinguished, 5-anaerobic fermentation bed charging aperture, 6-anaerobic fermentation bed aerogenesis gathering system, 7-aerobic fermentation bed stirring system, 8-power heating system, 9-anaerobic sludge return-flow system, 10-anaerobic sludge return duct, the 11-sludge pump, 12-anaerobic sludge delivery pipe, 13-aerobe matter waste material, 14-anaerobic organism matter waste material, the 15-supporting construction, the 16-stirring motor, 17-horizontal line travelling wheel, the 18-belt, 19-walking in a horizontal state motor, 20-sawtooth grooves track, 21-stirring system platform, the 22-directive wheel, 23-scraper plate bracing frame, 24-scraper plate agitator, 25-dentation hook, the 26-halyard
Below the present invention is described in more detail.But following example is only simple and easy example of the present invention, does not represent or limit the scope of the present invention, and interest field of the present invention is as the criterion with claims.
The specific embodiment
For the present invention is described better, be convenient to understand technical scheme of the present invention, typical but non-limiting embodiment of the present invention is as follows:
A kind of aerobic-anaerobic combined solid state fermentation device, comprise the solid anaerobic digestion bed 2 that is positioned at central authorities and the solid-state aerobic fermentation bed 1 of solid anaerobic digestion bed 2 peripheries, separate with the good heat-conducting plate that conducts heat (as iron plate, aluminium sheet or copper coin etc.) between the two, can take full advantage of the tow taste heat that the solid-state aerobic fermentation process produces, provide heat by good heat conduction for the solid anaerobic digestion process.
Described solid anaerobic digestion bed 2 tops are provided with charging aperture 5, and the bottom is set to taper, are connected with anaerobic sludge delivery pipe 12.
Solid anaerobic digestion bed of the present invention 2 bottoms are provided with anaerobic sludge return-flow system 9 and comprise anaerobic sludge return duct 10, sludge pump 11 and anaerobic sludge delivery pipe 12, pass solid anaerobic digestion bed 2 from bottom to top, its end is divided into two-way, one the road to solid anaerobic digestion bed 2 tops, one the road to aerobic fermentation bed 1 upper edge (charging of aerobic fermentation bed and inoculation distinguish 4), mud is mainly by outside aerobic drying/compost, and part is used for inoculation and the stirring of anaerobic fermentation process; The top is provided with aerogenesis gathering system 6, is used for collecting the biogas that anaerobic fermentation process produces, and is connected with the boiler of power heating system 8; Described power heating system 8 comprises methane boiler and heat supply pipeline, steam-driven generator and circuit, heat exchanger, fermentation bed external thermal insulation, pipe insulating layer etc., heat supply pipeline passes the solid anaerobic digestion bed from bottom to top, and is uniformly distributed in the inner peripheral wall of solid anaerobic digestion bed 2.
Described solid anaerobic digestion bed 2 is provided with supporting construction 15 with solid-state aerobic fermentation bed 1 bottom, for example the column form.
Described solid-state aerobic fermentation bed 1 comprises charging and inoculates the aerobic fermentation bed stirring system 7 on edge on district 4, bottom discharge mouth 3 and fermentation bed.
The core component of aerobic fermentation bed stirring system 7 comprises stirring motor 16, horizontal line travelling wheel 17, walking in a horizontal state motor 19, sawtooth grooves track 20, stirring system platform 21, scraper plate agitator 24.stirring system platform 21 is connected with horizontal line travelling wheel 17 axles that can rotate by bearing, walking in a horizontal state motor 19 and stirring motor 16 all are fixed on stirring system platform 21, horizontal line travelling wheel 17 and scraper plate agitator 24 are driven by belt 18 by walking in a horizontal state motor 19 and stirring motor 16 respectively, realization be placed on the sawtooth grooves track 20 on edge on solid-state aerobic fermentation bed 1 walking in a horizontal state and in solid-state aerobic fermentation bed 1 to the stirring of material, settle a plurality of dentation hooks 25 on scraper plate agitator 24, the materials overturning of front lower can be arrived the top, rear, scraper plate agitator 24 upper ends are connected to stirring system platform 21 by scraper plate bracing frame 23, play a supporting role, the lower end is connected on stirring system platform 21 forwardly by halyard 26, alleviate the torsion of 24 pairs of scraper plate bracing frames 23 of scraper plate agitator, regulate halyard 26 length and can change the degree of depth that stirs material.Directive wheel 22 is arranged on stirring system platform 21 bottoms, and is stuck in sawtooth grooves track 20 lower ends of bottom slot, and bootable direction makes it walk around circular orbit.
The present invention also provides a kind of aerobic-anaerobic combined solid state fermentation method:
If installation for fermenting designs, operational factor is as follows:
V 1＝(1+R 1)Q 1*T 1/ρ 1
V 1-solid anaerobic digestion bed effective volume, m 3R 1-anaerobic fermentation reflux ratio, Q 1-anaerobic fermentation load, t/d; T 1-anaerobic fermentation the cycle, d; ρ 1-anaerobic fermentation material density, t/m 3
V 2＝(1+R 2)Q 2*T 2/ρ 2
V 2-solid-state aerobic fermentation bed effective volume, m 3R 2-aerobic fermentation inoculation ratio, Q 2-aerobic fermentation load, t/d; T 2-aerobic fermentation the cycle, d; ρ 2-aerobic fermentation material density, t/m 3
With cumulative volume V 2The material for the treatment of Aerobic Process for Treatment inoculated put into solid-state aerobic fermentation bed 1 through the charging of aerobic fermentation bed and inoculation district 4, carry out aerobic fermentation, treat the aerobic fermentation cycle T 2After it fermentation is completed, T 2Discharged load Q from aerobic fermentation bed discharging opening 3 in+1 day 2Material, then put into load Q 2The fresh material for the treatment of Aerobic Process for Treatment, and take out R from the corruption material of completing aerobic fermentation of remainder 2* Q 2Carry out with it combined inoculation, begin new aerobic fermentation process, T 2Push away before the material that+2 days will put into scraper plate agitator 23 the previous day, and repeat the charging seeded process, until 2T 2It completes the replacing of material in whole aerobic fermentation bed, the 1 normal operation of beginning of solid-state aerobic fermentation bed.
In the process of fermentation, aerobic fermentation bed stirring system 7 is except in the process that front pushes away material, also completes the stirring up and down of appropriate intensity of material, so that oxygen supply and heat radiation.Push away before material and stir and recently to determine with the rotating speed of stirring motor 16 by regulating walking in a horizontal state motor 19, there is a balance ratio, move than under state of value at this, the aerobic fermentation bed stirring system 7 interior materials of walking in a horizontal state distance can just be turned to the rear from the place ahead by scraper plate agitator 24, when greater than this balance ratio, material is passed forward, and during less than this ratio, the zero loads that scraper plate agitator 24 occurs to a certain degree.This ratio is highly relevant with the stacking of aerobic fermentation material.
After the normal startup of solid-state aerobic fermentation bed 1, press following program start solid anaerobic digestion bed 2: with volume V 1The material that anaerobic fermentation is processed for the treatment of of completing inoculation put into solid anaerobic digestion bed 2 by anaerobic fermentation bed charging aperture 5, the anaerobic fermentation cycle T 1After it fermentation is completed, T 1Shifted anaerobic fermentation tunning (load Q by anaerobic sludge return-flow system 9 in+1 day 1) distinguish 4 to charging and the inoculation of aerobic fermentation bed 1, treat material or the inoculum of aerobic fermentation as part, replenish simultaneously fresh material (the load Q that treats that anaerobic fermentation is processed 1) to solid anaerobic digestion bed 2.So repeatedly, until 2T 1Complete replacing and the normal operation of beginning of material in whole solid anaerobic digestion bed 2 after it.
The biogas that produces in solid anaerobic digestion bed 2 is after fermentation bed aerogenesis gathering system 6 is carried and purified, supply with the boiler internal combustion of power heating system 8, produce steam, to drive steam-driven generator, can be aerobic fermentation bed stirring system energy consumption is provided, steam-driven generator outlet remainder steam can be used for adding the heat supply pipeline of heat power heating system 8, replenishes the hear rate of cryogenic conditions bottom fermentation process and the heat waste of device, and then keeps whole system independence, stably operation.
Applicant's statement, the present invention illustrates detailed construction feature of the present invention and fermentation process by above-described embodiment, but the present invention is not limited to above-mentioned detailed construction feature and fermentation process, does not mean that namely the present invention must rely on above-mentioned detailed construction feature and fermentation process could be implemented.The person of ordinary skill in the field should understand, any improvement in the present invention is to the increase of the equivalence replacement of the selected parts of the present invention and accessory, the selection of concrete mode etc., within all dropping on protection scope of the present invention and open scope.

Claims (10)

1. aerobic-anaerobic combined solid state fermentation device, comprise the solid anaerobic digestion bed (2) and the peripheral solid-state aerobic fermentation bed (1) of solid anaerobic digestion bed (2) that are positioned at central authorities, it is characterized in that, separate with heat-conducting plate between the two, described solid anaerobic digestion bed (2) bottom is provided with anaerobic sludge return-flow system (9), pass solid anaerobic digestion bed (2) from bottom to top, its end is divided into two-way, access respectively solid anaerobic digestion bed (2) and solid-state aerobic fermentation bed (1), described solid anaerobic digestion bed (2) top is provided with aerogenesis gathering system (6), be connected with power heating system (8), the heat supply pipeline of described power heating system (8) passes solid anaerobic digestion bed (2) from bottom to top, and is uniformly distributed in the inner peripheral wall of solid anaerobic digestion bed (2).
2. device as claimed in claim 1, is characterized in that, described solid anaerobic digestion bed (2) is provided with supporting construction (15) bottom solid-state aerobic fermentation bed (1).
3. device as claimed in claim 1 or 2, is characterized in that, described anaerobic sludge return-flow system (9) comprises anaerobic sludge return duct (10), sludge pump (11) and anaerobic sludge delivery pipe (12).
4. device as claimed in claim 1, is characterized in that, described solid anaerobic digestion bed (2) top is provided with charging aperture, and the bottom is set to taper, is connected with anaerobic sludge delivery pipe (12).
5. device as claimed in claim 1, is characterized in that, described solid-state aerobic fermentation bed (1) comprises charging and inoculates the aerobic fermentation bed stirring system (7) on edge on district (4), bottom discharge mouth (3) and fermentation bed.
6. device as claimed in claim 5, is characterized in that, is provided with sawtooth grooves track (20) on the platform (21) of described aerobic fermentation bed stirring system (7), and described platform (21) is connected with horizontal line travelling wheel (a 17) axle; Described horizontal line travelling wheel (17) is driven by walking in a horizontal state motor (19) can be along sawtooth grooves track (20) walking in a horizontal state; Described platform (21) is lower to being provided with scraper plate agitator (24), is driven by stirring motor (16); Platform (21) bottom is equipped with directive wheel (22).
7. device as claimed in claim 6, is characterized in that, described walking in a horizontal state motor (19) and stirring motor (16) all are fixed on stirring system platform (21).
8. device as described in claim 6 or 7, it is characterized in that, described scraper plate agitator (24) upper end is connected to stirring system platform (21) by scraper plate bracing frame (23), and the lower end is connected on stirring system platform (21) forwardly by halyard (26); Be provided with a plurality of dentation hooks (25) on scraper plate agitator (24).
9. aerobic-anaerobic combined solid state fermentation method, described method adopts device as described in one of claim 1-8, it is characterized in that, comprises the following steps:
1) start solid-state aerobic fermentation
vaccinated material is put into solid-state aerobic fermentation bed (1) through charging and inoculation district (4) carry out aerobic fermentation, after treating that fermentation is completed, discharge from bottom discharge mouth (3), then put into fresh material, and take out a certain amount of combined inoculation with it by inoculation ratio 0.2～0.3 from the material of completing aerobic fermentation, begin new aerobic fermentation process, push away before using subsequently scraper plate agitator (23) with the material of putting into, repeat the charging seeded process, until complete the replacing of material in whole aerobic fermentation bed (1), normally operation of solid-state aerobic fermentation bed (1) beginning,
2) start solid anaerobic digestion
After the normal startup of solid-state aerobic fermentation bed (1), vaccinated material is put into solid anaerobic digestion bed (2) by charging aperture (5), after treating that fermentation is completed, shift the anaerobic fermentation product to the charging of aerobic fermentation bed (1) and inoculation district (4) by anaerobic sludge return-flow system (9), treat material or the inoculum of aerobic fermentation as part, replenish simultaneously fresh material to solid anaerobic digestion bed (2), so repeatedly, until complete replacing and the normal operation of beginning of material in whole solid anaerobic digestion bed (2);
The biogas that produces in solid anaerobic digestion bed (2) is after aerogenesis gathering system (6) is carried and purified, supply with power heating system (8) burning, produce steam, for aerobic fermentation bed stirring system (7) provides energy consumption, residual water vapor can be used for adding the heat supply pipeline of heat power heating system (8).
10. method as claimed in claim 9, is characterized in that, the inoculation ratio in described startup solid-state aerobic fermentation step is 0.25.
CN2011103229818A 2011-10-21 2011-10-21 Aerobic-anaerobic combined solid state fermentation device and fermentation method thereof Expired - Fee Related CN102441557B (en)

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