CN102517200B - Organic waste dry anaerobic high-temperature fermentation system and fermentation process - Google Patents

Organic waste dry anaerobic high-temperature fermentation system and fermentation process Download PDF

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CN102517200B
CN102517200B CN201110371277.1A CN201110371277A CN102517200B CN 102517200 B CN102517200 B CN 102517200B CN 201110371277 A CN201110371277 A CN 201110371277A CN 102517200 B CN102517200 B CN 102517200B
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dry
type anaerobic
fermentation tank
anaerobic fermentation
natural pond
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CN102517200A (en
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程红清
燕维贤
巴云鹏
黄兴
陈玉鹏
谢晨光
张丽红
季刚
范树平
苏沛仁
杨凤霞
杨发勇
杨育春
李云宏
王雁鹏
刘旭
孙惠伟
钱家梅
郑维
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Yunnan Kunming Shipbuilding Equipment Environmental Protection Technology Co., Ltd.
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YUNNAN KUNCHUAN 2ND MACHINERY CO Ltd
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    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C12M29/20—Degassing; Venting; Bubble traps
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M21/00—Bioreactors or fermenters specially adapted for specific uses
    • C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • 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
    • C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
    • C12M27/02—Stirrer or mobile mixing elements
    • 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
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
    • Y02T50/678—Aviation using fuels of non-fossil origin
    • 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

Abstract

The invention relates to an organic waste dry anaerobic high-temperature fermentation system and a fermentation process. The fermentation system comprises a feeding system (1), a dry anaerobic fermentation tank (2) with an agitating system (3), a heat preservation and heating system (4), a biogas slurry and biogas residue treatment system (5), an exhaust system (6) and a control system. The organic waste dry anaerobic high-temperature fermentation system and the fermentation process have the beneficial effects that harmless treatment, reduction treatment and resource treatment can be carried out on domestic organic wastes, so that the cyclic utilization of the wastes is realized; and moreover, the treatment efficiency is high, and the energy consumption and the treatment cost are low.

Description

A kind of dry type anaerobic high-temperature fermentation system for organic waste and zymotechnique
Technical field
The present invention relates to as the processing technology field of the organic wastes such as the organic moiety in domestic refuse, rubbish from cooking, green garbage, agricultural crop straw, feces of livestock and poultry, septic tank bed mud, active sludge and Herba Eichhorniae, blue-green algae.
Background technology
At present, the organic composition in China's domestic refuse is in continuous increase.Organic composition in China's domestic refuse is compared with developed countries, has very large difference, and the content of its paper is lower, the content of rubbish from cooking, green garbage etc. is higher, and the water ratio of rubbish from cooking is higher, general water ratio is 70%～80%, and the water ratio of melon skin etc. can be up to more than 95%.Burn away the refuse to have and reclaim heat energy and waste reduction advantage the most thoroughly, after burning, garbage bulk can reduce 80%～95%, yet organic waste moisture is high, net thermal value is low, be not suitable for burning, and burn easily generation “ dioxin " class material, causes serious environmental pollution.Directly landfill waste can produce a large amount of landfill percolates again, processes bad very easily polluted underground water and the surface water, and percolate forms complexity because of it, and concentration is high, and the cost of processing is also very large.Adopt composting mode treating refuse, can make rubbish become fertilizer, but the fertilizer efficiency of this garbage tankage is low, sell limitedly, room for development is little.
In organism, containing a large amount of moisture, carbohydrate, fat and protein etc., is the basic substance of carrying out a biological disposal upon.Anaerobically fermenting is that organism is under anaerobic consumed by the Metabolic activity of microorganism, simultaneously with the generation of methane and carbon dioxide etc.Anaerobically fermenting is recycled biogas easily because producing, so claim again biogas fermentation.In anaerobic treatment process, do not need oxygen supply, power consumption is low, organism major part changes biogas into and can be used as bioenergy, the innoxious degree of fermentation residue raffinate is good, parasitic ovum and pathogenic micro-organism can be killed during the fermentation, after organic matter fermentation, can become the fertilizer that fertilizer efficiency is higher, can also be made into Novel biomass fuel---rod RDF together with mud simultaneously.So anaerobically fermenting is often used as an important step in foundation benign cycle agroecosystem and is used in the research and practice of the ecological agriculture, receives increasing concern.
According to solid holdup (TS) difference, anaerobically fermenting is divided into two kinds of wet type (TS is 5%～15%) and dry types (TS is 15%～40%).The anaerobically fermenting engineering of built operation adopts wet type fermentation more.Wet type anaerobic fermentation reactor volume is large, and factor of created gase is lower, and dilution fermentation substrate is large with water consumption, has both increased the running cost of technique, again waste water resource.Dry-type anaerobic fermentation technology, as New-type refuse vehicle biological treatment, is compared with wet type anaerobic ferment process, and its organic loading is high, and sewage load is few, and the shared digestion reactor volume of unit rubbish is little, has very significantly advantage.
Anaerobically fermenting can be divided into normal temperature fermentation (natural temperature), mesophilic digestion (30～40 ℃) and thermophilic fermentation (50～60 ℃) according to temperature difference.The proportional relation of the temperature of anaerobically fermenting and gas production rate, gas production rate is the important parameter that characterizes anaerobically fermenting quality, and between them, the essence of relation is the digestion rate of fermentation substrate, and temperature is higher, and organic rate of decomposition is faster.
The problems such as existing dry anaerobic fermentation process adopts mesophilic digestion more, exists fermentation rate slow, and organic substance decomposing speed is slow.The fermentation required equipment that the dry type high-temperature anaerobic fermentation technology of having developed is at present fermented required is of a great variety, has increased process costs, and has been unfavorable for management maintenance, and natural pond liquid, natural pond slag that fermentation is produced can not effectively be processed.Because high solid concentration material fluidity in fermentation system is poor, the heat-transfer effect between material is poor, is difficult to keep the constant of the interior temperature of charge of dry-type anaerobic fermentation tank and conducts heat evenly, input and output material difficulty.
Summary of the invention
The object of the invention is to solve the deficiencies in the prior art, system and the technique thereof of one way of life organic waste and feces of livestock and poultry, septic tank bed mud, active sludge combination treatment are provided, to improve processing efficiency, reduce energy consumption and processing cost, prevent from causing secondary pollution, and the product after fermentation separation is prepared into fertilizer and the required biogas energy of Novel biomass fuel and society that fertilizer efficiency is higher, innoxious, minimizing, the recycling treatment of carrying out domestic organic garbage, realize the recycle of rubbish.
The object of the invention is to be achieved through the following technical solutions.
A dry type anaerobic high-temperature fermentation system for organic waste, comprises feed system, with the dry-type anaerobic fermentation tank of stirring system, Heat preservation system, liquid natural pond, natural pond slag disposal system, exhaust system and Controlling System; Described feed system comprises material-storing box, transfer roller, half wet crushing mill, the pretreatment pool that order arranges; Liquid natural pond, described natural pond slag disposal system comprises by the interconnective sludge dewatering equipment of pipeline and apparatus for treating sewage; Described exhaust system comprises the gas-holder being connected with dry-type anaerobic fermentation tank by pipeline; The pretreatment pool of feed system is connected with the opening for feed of dry-type anaerobic fermentation tank by pipeline, between dry-type anaerobic fermentation tank and Heat preservation system, by circulation line, be connected, dry-type anaerobic fermentation tank is also connected with apparatus for treating sewage with the sludge dewatering equipment of liquid natural pond, natural pond slag disposal system respectively by pipeline.
Apparatus for treating sewage of the present invention is connected with Heat preservation system by pipeline or is connected to blowdown system.
The stirring system of dry-type anaerobic fermentation tank of the present invention comprises from the feed end of dry-type anaerobic fermentation tank and is arranged at five groups of stirring mechanisms dry-type anaerobic fermentation tank to discharge end order; Every group of stirring mechanism comprise the step-down gear being positioned at outside dry-type anaerobic fermentation tank, the at right angle setting being connected with step-down gear in the stir shaft of dry-type anaerobic fermentation tank, be installed on the agitating vane on stir shaft.On every stir shaft, along different heights, three groups of agitating vanes are installed, interlaced 90 ° of adjacent agitating vane is arranged.Described agitating vane is the blade with mesh.The agitating vane of topmost is partly positioned on dry-type anaerobic fermentation tank fermentation liquid level, the agitating vane of bottommost near but do not contact dry-type anaerobic fermentation tank bottom surface.The top that is positioned at dry-type anaerobic fermentation tank at stir shaft is provided with tightness system.
The sidewall bottom of dry-type anaerobic fermentation tank of the present invention is the scarp of closing up gradually downwards, the inclined-plane of the bottom surface of dry-type anaerobic fermentation tank for reducing gradually to discharge end from feed end.
Heating and thermal insulation system of the present invention comprises cold water storage cistern, air source heat pump, attemperater, scatterer, the interchanger being linked in sequence by water pipe; Scatterer is arranged in dry-type anaerobic fermentation tank; Between air source heat pump and attemperater, be also connected with backflow water pipe, attemperater respectively with the radiator inleting pipe that is connected scatterer and radiator outlet pipe and the interchanger water inlet pipe and the interchanger rising pipe that are connected interchanger; Interchanger is also connected with natural pond liquid discharge nozzle with the natural pond liquid feed-pipe that is connected the circulation line of dry-type anaerobic fermentation tank.
The present invention is also provided with dehydration and desulfurizer at the gas-holder front end of exhaust system.
An organic waste dry-type anaerobic high temperature zymotechnique, step is as follows:
treating material in material-storing box is transported to and in half wet crushing mill, is crushed to the specification that is not more than 5mm by transfer roller, by Pipeline transport to pretreatment pool, in pretreatment pool, carry out after the acidifying pre-treatment of 2～3 days, then material pumping is stirred and fermentation to sealing in dry-type anaerobic fermentation tank;
Figure 287727DEST_PATH_IMAGE002
the natural pond liquid that fermentation is obtained is delivered to Heat preservation system by pipeline and is heated, natural pond liquid after part heating is recycled to mixing of materials in dry-type anaerobic fermentation tank and tank by pipeline again to be stirred, the heating material to 55 in dry-type anaerobic fermentation tank～60 ℃, regulating the solid holdup of material is 30%～40%;
Figure 2011103712771100002DEST_PATH_IMAGE003
the material that fermentation is completed is used from extracting out in dry-type anaerobic fermentation tank and is delivered to sludge dewatering equipment and carry out solid-liquid separation, the natural pond slag of separating is stored and waited until further utilization, and the natural pond liquid of separating is delivered to the utilization of Heat preservation systemic circulation or is processed after up to standard and deliver to blowdown system after processing by apparatus for treating sewage; The mud that sewage treatment process produces ferments in dry-type anaerobic fermentation tank by Pipeline transport again;
Figure 47872DEST_PATH_IMAGE004
when the pressure in dry-type anaerobic fermentation tank reaches set(ting)value, by Controlling System booster air pump, the gas in dry-type anaerobic fermentation tank is extracted in gas-holder.
It is high that the present invention processes domestic organic garbage efficiency, energy consumption is low, can not cause secondary pollution, product after fermentation separation can prepare concentrated fertilizer, biomass fuel and biogas energy, realized innoxious, minimizing and the recycling treatment of domestic organic garbage, domestic organic garbage has been carried out to effective recycle.The present invention can pass through the fermentation state of Controlling System Real-Time Monitoring material, and in automatic control system, each equipment operation, realizes the automatic control of system.
Below in conjunction with Figure of description, further set forth content of the present invention.
Accompanying drawing explanation
Fig. 1 is dry type anaerobic high-temperature fermentation system for organic waste figure of the present invention;
Fig. 2 is that dry-type anaerobic fermentation tank stirring system of the present invention arranges schematic diagram;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the vertical view of one group of whipping appts;
Fig. 5 is Heat preservation system architecture schematic diagram.
In figure, 1-feed system; 1a-material-storing box; 1b-transfer roller; 1c-half wet crushing mill; 1d-pretreatment pool; 2-dry-type anaerobic fermentation tank; 2a-dry-type anaerobic fermentation tank sidewall bottom; 2b-dry-type anaerobic fermentation tank bottom surface; 2c-opening for feed; 2d-discharge port; 3-stirring system; 3a-step-down gear; 3b-stir shaft; 3c-agitating vane; 3d-tightness system; 4-Heat preservation system; 4a-cold water storage cistern, 4b-air source heat pump; 4c-attemperater; 4d-scatterer; 4e-interchanger; 4f-water pipe; 4g-backflow water pipe; 4h-radiator inleting pipe; 4i-radiator outlet pipe; 4j-interchanger water inlet pipe; 4k-interchanger rising pipe; 4m-natural pond liquid feed-pipe; 4n-natural pond liquid discharge nozzle; Liquid natural pond, 5-natural pond slag disposal system; 5a-sludge dewatering equipment; 5b-apparatus for treating sewage; 5c-pipeline; 6-exhaust system; 6a-gas-holder; 6b-dehydration and desulfurizer; 7-blowdown system.
Embodiment
As shown in Figure 1, dry type anaerobic high-temperature fermentation system for organic waste of the present invention comprise feed system 1, with the dry-type anaerobic fermentation tank 2 of stirring system 3, Heat preservation system 4, liquid natural pond, natural pond slag disposal system 5, exhaust system 6 and Controlling System.Feed system 1 comprises material-storing box 1a, transfer roller 1b, half wet crushing mill 1c, the pretreatment pool 1d that order arranges.Liquid natural pond, described natural pond slag disposal system 5 comprises by the interconnective sludge dewatering equipment 5a of pipeline 5c and apparatus for treating sewage 5b; Described exhaust system 6 comprises the gas-holder 6a being connected with dry-type anaerobic fermentation tank by pipeline; The pretreatment pool 1d of feed system is connected with the opening for feed of dry-type anaerobic fermentation tank 2 by pipeline, between dry-type anaerobic fermentation tank 2 and Heat preservation system 4, by circulation line, be connected, dry-type anaerobic fermentation tank 2 is also connected with apparatus for treating sewage 5b with the sludge dewatering equipment 5a of liquid natural pond, natural pond slag disposal system respectively by pipeline.Apparatus for treating sewage 5b also can be connected or be connected to blowdown system 7 with Heat preservation system 4 by pipeline.At the gas-holder 6a of exhaust system 6 front end, dehydration and desulfurizer 6b also can be set.
Controlling System of the present invention is by the composition of the control system of the ph value monitoring sensor of arranging in the electrical control system of each equipment in dry type anaerobic high temperature fermentation system and dry-type anaerobic fermentation tank, pressure monitoring sensor, temperature monitoring sensor, material position-detection sensor.Material fermentation state in can Real-Time Monitoring dry-type anaerobic fermentation tank, according to the parameter feedback of each sensor, control the operation of each equipment in dry type anaerobic fermentation system, to realize liquid level, temperature, pH value and tank internal pressure and the input and output material of material in automatic control and adjusting dry-type anaerobic fermentation tank.
Dry-type anaerobic fermentation tank 2 of the present invention adopts whole concrete structure, can offer viewing window at dry-type anaerobic fermentation tank sidewall.The sidewall bottom 2a of dry-type anaerobic fermentation tank 2 is the scarp of closing up gradually downwards, the inclined-plane of the bottom surface 2b of dry-type anaerobic fermentation tank for reducing gradually to discharge end from feed end, can make the material having reacted deposit to bottom, and be beneficial to the flow direction of material discharge port 2d having reacted.The stirring system 3 of dry-type anaerobic fermentation tank, as shown in Fig. 3, Fig. 4, Fig. 5, comprises from the feed end of dry-type anaerobic fermentation tank and is arranged at five groups of stirring mechanisms dry-type anaerobic fermentation tank to discharge end order; Every group of stirring mechanism comprise the step-down gear 3a being positioned at outside dry-type anaerobic fermentation tank, the at right angle setting being connected with step-down gear in the stir shaft 3b of dry-type anaerobic fermentation tank, be installed on the agitating vane 3c on stir shaft.On every stir shaft, along different heights, three groups of agitating vane 3c are installed, interlaced 90 ° of adjacent agitating vane is arranged, the agitating vane of topmost is partly positioned on dry-type anaerobic fermentation tank fermentation liquid level, the agitating vane of bottommost near but do not contact dry-type anaerobic fermentation tank bottom surface.Agitating vane 3c is the blade with mesh.The top that is positioned at dry-type anaerobic fermentation tank at stir shaft is provided with tightness system 3d.By being set in sequence in the rotation of five groups of stirring mechanisms in dry-type anaerobic fermentation tank and the effect of cooperatively interacting, can effectively solve pushing away charging and discharging and fully stirring of material, especially adopt on every stir shaft, along different heights, three groups of agitating vanes are installed, interlaced 90 ° of adjacent agitating vane is arranged, not only can advance better material, also can make organism mix more fully with inoculum, medium in fermented product, microorganism, nutrition etc. are evenly suspended, and holding temperature, acidity are even.The agitating vane of topmost is partly positioned on dry-type anaerobic fermentation tank fermentation liquid level, can effectively prevent fermented product surface crust, the agitating vane of bottommost near but do not contact dry-type anaerobic fermentation tank bottom surface, dry-type anaerobic fermentation tank bottom material deposition can be avoided, also the corrosion to stirring mechanism can be reduced.Agitating vane adopts the blade with mesh, can reduce the resistance in whipping process.Tightness system 3d can avoid dry-type anaerobic fermentation tank because the installation of whipping appts produces leakage.
Heating and thermal insulation system 4 of the present invention as shown in Figure 5, comprises cold water storage cistern 4a, the air source heat pump 4b, attemperater 4c, scatterer 4d, the interchanger 4e that by water pipe 4f, are linked in sequence; Scatterer 4d is arranged in dry-type anaerobic fermentation tank 2; Between air source heat pump 4b and attemperater 4c, be also connected with backflow water pipe 4g, attemperater 4c respectively with the radiator inleting pipe 4h that is connected scatterer 4d and radiator outlet pipe 4i and the interchanger water inlet pipe 4j and the interchanger rising pipe 4k that are connected interchanger 4e; Interchanger 4e is also connected with natural pond liquid discharge nozzle 4n with the natural pond liquid feed-pipe 4m that is connected the circulation line of dry-type anaerobic fermentation tank.
Half wet crushing mill, pretreatment pool, air source heat pump, scatterer, interchanger, dehydration and desulfurizer, apparatus for treating sewage, Wu mud Tuo Shui Ji Alto used in system of the present invention all can adopt prior art equipment.
The zymotechnique step of dry type anaerobic high-temperature fermentation system for organic waste of the present invention is as follows:
Figure 252589DEST_PATH_IMAGE001
the materials such as the organism in the organic moiety in domestic refuse, rubbish from cooking, green garbage, agricultural crop straw, feces of livestock and poultry, septic tank bed mud, active sludge, airport aviation rubbish and Herba Eichhorniae, blue-green algae are stored to material-storing box 1a after weighing.Material-storing box is made with Q235A material, and does rotproofing.Position monitoring sensor is housed in material-storing box, when material reaches the position of setting, by Controlling System, open the outlet valve of material-storing box, start transfer roller 1b, mass transport is pulverized in half wet crushing mill 1c, the material particles specification requirement after pulverizing is controlled in 5mm, the particle diameter of material is less, carry difficulty lower, be convenient to stir and conduct heat evenly, thereby accelerate organic fermentation.Material after pulverizing is transported in pretreatment pool 1d by e Foerderanlage, in pretreatment pool, carry out acidifying pre-treatment 2～3 days, by the fresh feed pump of feed system, send in dry-type anaerobic fermentation tank 2 and seal and stir and fermentation, dry-type anaerobic fermentation tank is provided with opening for feed 2c, at opening for feed, be provided with valve, during material fermentation, seal dry-type anaerobic fermentation tank.The dry-type anaerobic fermentation tank of sealing has guaranteed the anaerobic environment of high-temperature anaerobic fermentation.
Figure 451489DEST_PATH_IMAGE002
the natural pond liquid that fermentation is obtained is delivered to Heat preservation system 4 by pipeline and is heated.Dry-type anaerobic fermentation tank is before entering material, by the temperature in temperature sensor monitors dry-type anaerobic fermentation tank, start Heat preservation system dry-type anaerobic fermentation tank is carried out to heating and thermal insulation, along with material enters in dry-type anaerobic fermentation tank, Real-Time Monitoring temperature, water temp flow velocity in controlling the scatterer 4d that is arranged in dry-type anaerobic fermentation tank by Controlling System and being connected the hot water circulating pipeline of scatterer, dry-type anaerobic fermentation tank is heated and is incubated, to control in dry-type anaerobic fermentation tank homo(io)thermism at 55～60 ℃.The cold water storage cistern 4a of heating system provides the air source heat pump 4b required cold water of working, by water pipe, by cold water storage cistern, enter air source heat pump, air source heat pump is by cool water heating, hot water enters attemperater 4c, if hot water, lower than temperature required, enters air source heat pump circulating-heating by backflow water pipe in attemperater, the hot water in attemperater enters scatterer 4d by connecting water pipe, hot water enters after scatterer by radiator inleting pipe 4h, then is back to attemperater by radiator outlet pipe 4i.When interchanger is worked, hot water in attemperater enters interchanger by interchanger water inlet pipe 4j, by interchanger rising pipe, 4k is back to attemperater, natural pond liquid part in dry-type anaerobic fermentation tank 2 flow to interchanger by natural pond liquid discharge nozzle 4n, by being back to mixing of materials in dry-type anaerobic fermentation tank and tank through natural pond liquid feed-pipe 4m again after heating, stir, thereby the heating material in dry-type anaerobic fermentation tank.Material enters after dry-type anaerobic fermentation tank, sprays mud solid holdup is inoculated and regulated to the material in dry-type anaerobic fermentation tank by pipeline, and the solid holdup that makes material is that 30%～40%, ph value remains between 6.6-7.2.By reasonable connection and the work of air source heat pump, attemperater, scatterer and interchanger, the heat energy that utilizes air source heat pump to provide, both can realize the insulation to environment in dry-type anaerobic fermentation tank by the work of dry-type anaerobic fermentation tank inner radiator, work that again can be by interchanger is natural pond liquid circulating-heating, thereby efficient fast to the heating material in dry-type anaerobic fermentation tank and insulation.
Figure 120368DEST_PATH_IMAGE003
the material that fermentation is completed is used from extracting out in dry-type anaerobic fermentation tank and is delivered to sludge dewatering equipment 5a and carry out solid-liquid separation, the natural pond slag of separating is stored and waited until further utilization, and the natural pond liquid of separating is delivered to 4 recycles of Heat preservation system after processing by apparatus for treating sewage 5b or is processed after up to standard and deliver to blowdown system 7; The mud that sewage treatment process produces ferments in dry-type anaerobic fermentation tank by Pipeline transport again, realizes the recycle of resource;
Figure 51415DEST_PATH_IMAGE004
when the pressure in dry-type anaerobic fermentation tank reaches set(ting)value, pressure transmitter transmits signals to Controlling System, by Controlling System booster air pump, the gas in dry-type anaerobic fermentation tank is extracted out, by devices such as dehydration and desulfurization, delivers in gas-holder 6a.
Fermenting process is continous way charging, i.e. dry-type anaerobic fermentation tank continuously feeding, and the material decomposing is completely discharged from dry-type anaerobic fermentation tank bottom continuously.In fermentation first cycle (about 25 days), a charging, not discharging.After first fermentation period completes, every day input and output material.During the fermentation, stirring system is realized interval type by control and is stirred.Feed time was controlled at about 3～4 hours, reduced the calorific loss causing because of charging; Discharging time was controlled at about 2 hours, in first two hours of discharging, stirring system stops stirring, until fermented product, after standing two hours, the material not fermented is positioned at dry-type anaerobic fermentation tank top, and the material having fermented (being natural pond slag) is positioned at the bottom of dry-type anaerobic fermentation tank.
In fermenting process, produced biogas, natural pond liquid, natural pond slag, biogas deposits gas-holder in, can be system itself and system outside energy demand is provided.The part natural pond liquid producing in fermenting process is supplied with the Matter Transfer heating in dry-type anaerobic fermentation tank and is regulated solid holdup by Heat preservation system.Ye He natural pond, part natural pond slag is sent into after sludge dewatering equipment dehydration, solids is for aerobic compost, finally can be made into fertilizer or RDF fuel stick, liquid can offer fermentation system as heating cycle water again or be discharged into reuse in city planting ductwork after apparatus for treating sewage is processed.
The present invention, through applicant's verification experimental verification, has obtained good technique effect, is with a wide range of applications.

Claims (10)

1. a dry type anaerobic high-temperature fermentation system for organic waste, it is characterized in that, the dry-type anaerobic fermentation tank (2) that comprises feed system (1), band stirring system (3), Heat preservation system (4), liquid natural pond, natural pond slag disposal system (5), exhaust system (6) and Controlling System; Described feed system (1) comprise material-storing box (1a) that order arranges, transfer roller (1b), half wet crushing mill (1c), pretreated for acidifyingpretreatment pool (1d); Described natural pond liquid natural pond slag disposal system (5) comprises by the interconnective sludge dewatering equipment of pipeline (5c) (5a) and apparatus for treating sewage (5b); Described exhaust system (6) comprises the gas-holder (6a) being connected with dry-type anaerobic fermentation tank by pipeline; The pretreatment pool of feed system (1d) is connected with the opening for feed of dry-type anaerobic fermentation tank (2) by pipeline, between dry-type anaerobic fermentation tank (2) and Heat preservation system (4), by circulation line, be connected, dry-type anaerobic fermentation tank (2) is also connected with apparatus for treating sewage (5b) with the sludge dewatering equipment (5a) of liquid natural pond, natural pond slag disposal system respectively by pipeline; Described heating and thermal insulation system (4) comprises cold water storage cistern (4a), air source heat pump (4b), attemperater (4c), scatterer (4d), the interchanger (4e) being linked in sequence by water pipe (4f); Scatterer (4d) is arranged in dry-type anaerobic fermentation tank (2); Between air source heat pump (4b) and attemperater (4c), be also connected with backflow water pipe (4g), attemperater (4c) is connected with interchanger rising pipe (4k) with the radiator inleting pipe (4h) that is connected scatterer (4d) and radiator outlet pipe (4i) and the interchanger water inlet pipe (4j) that is connected interchanger (4e) respectively; Interchanger (4e) is also connected with natural pond liquid discharge nozzle (4n) with the natural pond liquid feed-pipe (4m) that is connected the circulation line of dry-type anaerobic fermentation tank.
2. a kind of dry type anaerobic high-temperature fermentation system for organic waste according to claim 1, is characterized in that, apparatus for treating sewage (5b) is connected with Heat preservation system (4) by pipeline or is connected to blowdown system (7).
3. a kind of dry type anaerobic high-temperature fermentation system for organic waste according to claim 1, it is characterized in that, the stirring system (3) of described dry-type anaerobic fermentation tank (2) comprises from the feed end of dry-type anaerobic fermentation tank and is arranged at five groups of stirring mechanisms dry-type anaerobic fermentation tank to discharge end order; Every group of stirring mechanism comprise the step-down gear (3a) being positioned at outside dry-type anaerobic fermentation tank, the at right angle setting being connected with step-down gear in the stir shaft (3b) of dry-type anaerobic fermentation tank, be installed on the agitating vane (3c) on stir shaft.
4. a kind of dry type anaerobic high-temperature fermentation system for organic waste according to claim 3, is characterized in that, on every stir shaft, along different heights, three groups of agitating vanes (3c) is installed, and interlaced 90 ° of adjacent agitating vane is arranged.
5. according to a kind of dry type anaerobic high-temperature fermentation system for organic waste described in claim 3 or 4, it is characterized in that, described agitating vane (3c) is the blade with mesh.
6. according to a kind of dry type anaerobic high-temperature fermentation system for organic waste described in claim 3 or 4, it is characterized in that, the top that is positioned at dry-type anaerobic fermentation tank at stir shaft is provided with tightness system (3d).
7. a kind of dry type anaerobic high-temperature fermentation system for organic waste according to claim 4, it is characterized in that, the agitating vane of topmost is partly positioned on dry-type anaerobic fermentation tank fermentation liquid level, the agitating vane of bottommost near but do not contact dry-type anaerobic fermentation tank bottom surface.
8. a kind of dry type anaerobic high-temperature fermentation system for organic waste according to claim 1, it is characterized in that, the sidewall bottom (2a) of dry-type anaerobic fermentation tank (2) is the scarp of closing up gradually downwards, the bottom surface of dry-type anaerobic fermentation tank (2) inclined-plane for reducing gradually to discharge end from feed end.
9. a kind of dry type anaerobic high-temperature fermentation system for organic waste according to claim 1, is characterized in that, gas-holder (6a) front end in exhaust system (6) is also provided with dehydration and desulfurizer (6b).
10. adopt the organic waste dry-type anaerobic high temperature zymotechnique of a kind of dry type anaerobic high-temperature fermentation system for organic waste as described in claim 1 or 2 or 3 or 4 or 7 or 8 or 9, it is characterized in that, processing step is as follows:
1) treating material in material-storing box (1a) is transported in half wet crushing mill (1c) and is crushed to the specification that is not more than 5mm by transfer roller (1b), by Pipeline transport to pretreatment pool (1d), in pretreatment pool, carry out after the acidifying pre-treatment of 2～3 days, then material pumping is stirred and fermentation to sealing in dry-type anaerobic fermentation tank (2);
2) natural pond liquid fermentation being obtained is delivered to Heat preservation system (4) by pipeline and is heated, natural pond liquid after part heating is recycled to mixing of materials in dry-type anaerobic fermentation tank and tank by pipeline again to be stirred, the heating material to 55 in dry-type anaerobic fermentation tank～60 ℃, regulating the solid holdup of material is 30%～40%;
3) material fermentation being completed is delivered to sludge dewatering equipment (5a) and is carried out solid-liquid separation from extracting out in dry-type anaerobic fermentation tank, the natural pond slag of separating is stored and waited until further utilization, and the natural pond liquid of separating is delivered to (4) recycle of Heat preservation system after by apparatus for treating sewage (5b) processing or is processed after up to standard and deliver to blowdown system; The mud that sewage treatment process produces ferments in dry-type anaerobic fermentation tank by Pipeline transport again;
4) when the pressure in dry-type anaerobic fermentation tank reaches set(ting)value, by Controlling System booster air pump in dry-type anaerobic fermentation tank gas is extracted in gas-holder (6a).
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