CN103820312B - A kind of diphasic anaerobic fermentation bionethanation system - Google Patents

A kind of diphasic anaerobic fermentation bionethanation system Download PDF

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CN103820312B
CN103820312B CN201410077903.XA CN201410077903A CN103820312B CN 103820312 B CN103820312 B CN 103820312B CN 201410077903 A CN201410077903 A CN 201410077903A CN 103820312 B CN103820312 B CN 103820312B
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gas producing
producing device
anaerobic fermentation
ation gas
ferment ation
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CN103820312A (en
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李先宁
吴磊
洪锋
程伟
汪楚乔
黄飞
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Southeast University
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    • 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
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    • C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
    • C12M27/02—Stirrer or mobile mixing elements
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    • 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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    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
    • C12M41/18—Heat exchange systems, e.g. heat jackets or outer envelopes
    • C12M41/24—Heat exchange systems, e.g. heat jackets or outer envelopes inside the vessel

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Abstract

The invention discloses a kind of diphasic anaerobic fermentation bionethanation system, comprise hydrolysis acidification device, ferment ation gas producing device and be communicated with the circulation tube of hydrolysis acidification device and ferment ation gas producing device, wherein, described hydrolysis acidification device and ferment ation gas producing device all establish fluid inlet, liquid outlet and air outlet, also establish knot wire filler in described ferment ation gas producing device, described knot wire filler accounts for 1/5 of ferment ation gas producing device volume.Diphasic anaerobic fermentation bionethanation system of the present invention carries out product acid phase and aerogenesis stage respectively in two independently device, for acid-producing bacteria group and methanogen floras provide top condition required separately, to avoid in homogenous anaerobic zymotechnique between microorganism and environment to the restraining effect of microorganism, diphasic anaerobic fermentation reactor more can give full play to microbic activity than homogenous anaerobic fermentation reactor, improve treatment effect, and solve the large problem of reactor scum silica frost, crust and natural pond liquid quantity discharged that homogenous anaerobic fermentation reactor occurs.

Description

A kind of diphasic anaerobic fermentation bionethanation system
Technical field
The present invention relates to a kind of diphasic anaerobic fermentation bionethanation system, belong to environmental engineering and energy technology field.
Background technology
In recent years, along with growth in the living standard, the quickening of Integration of Urban-rural Areas process, the commercial energy resources such as electric energy, fossil energy become the main use energy of Rural areas, cause a large amount of agricultural crop straws and discard and committed to the flames in field.Crop straw burning harm is huge, such as: (1) stalk can produce the material of the harm body health of people such as a large amount of oxynitride, sulfurous gas and pellet through incomplete combustion; (2) do not add the easy initiation fire of burning of any measure like this, threaten life property safety of people; (3) crop straw burning produces a large amount of smog, and visibility meter is reduced greatly, and severe jamming communications and transportation, affects traffic safety; (4) cause energy use efficiency low, waste resource.Stalk is carried out producing methane through anaerobic fermentation; Rural areas problem of environmental pollution can be solved on the one hand, also can produce clean energy biogas on the other hand, both meet the needs of environment protection; can the wasting of resources be avoided again, realize environmental protection, the energy, resource reutilization comprehensive benefit.Changing food waste and stalk are all have higher production potential, and are all unmanageable rural organic wastes, and single straw anaerobic process fermentation period is long and C/N is higher, and single anaerobic fermentation of kitchen waste is unstable and acidifying suppression very easily occurs.
At present, stalk anaerobic fermentation produces marsh gas reactor and is mainly homogenous anaerobic fermentation reactor.Homogenous anaerobic fermentation reactor is put into by biogas fermentation material in a device, the acid of the product of biogas fermentation and methane phase stage united two into one, regulated voluntarily in the same apparatus.In addition, homogenous anaerobic fermentation reactor structure is simple, and gas producing efficiency is low, and homogenous anaerobic reactor can cause the problem that scum silica frost, crust and natural pond liquid quantity discharged are large, considerably increases the subsequent disposal difficulty of biogas engineering.
Summary of the invention
Technical problem to be solved by this invention is to provide one can give full play to microorganism active, the diphasic anaerobic fermentation bionethanation system that gas producing efficiency is high, present system adopts rational process layout, and structure is simple, laid down cost is low, running cost is low, is convenient to maintenance management.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:
A kind of diphasic anaerobic fermentation bionethanation system, comprise hydrolysis acidification device, ferment ation gas producing device and be communicated with the circulation tube of hydrolysis acidification device and ferment ation gas producing device, wherein, described hydrolysis acidification device and ferment ation gas producing device all establish fluid inlet, liquid outlet and air outlet, also establish knot wire filler in described ferment ation gas producing device, described knot wire filler accounts for 1/5 of ferment ation gas producing device volume.
Wherein, described ferment ation gas producing device is also provided with attemperator.
Further, described attemperator comprises heating rod and outer wall thermal insulation layer.
As preferably, the end of described attemperator is provided with temperature probe.
Wherein, also agitator motor is provided with in described ferment ation gas producing device.
Wherein, the liquid outlet of described hydrolysis acidification device is communicated with by circulation tube with the fluid inlet of ferment ation gas producing device, and this circulation tube is provided with lift pump.
Wherein, described outer wall thermal insulation layer is made up of rubber and plastic insulating cotton.
Beneficial effect: diphasic anaerobic fermentation bionethanation system of the present invention carries out product acid phase and aerogenesis stage respectively in two independently device, for acid-producing bacteria and methanogen provide top condition required separately, to avoid in homogenous anaerobic zymotechnique between microorganism and environment to the restraining effect of microorganism, diphasic anaerobic fermentation reactor more can give full play to microbic activity than homogenous anaerobic fermentation reactor, improve treatment effect, and it also solves the reactor scum silica frost that homogenous anaerobic fermentation reactor occurs, crust and the large problem of natural pond liquid quantity discharged, therefore, present system has simple and reasonable, fermentation gas rate is high, the advantage that prepared using is abundant and natural pond liquid generation is little.
Accompanying drawing explanation
Fig. 1 is the structural representation of diphasic anaerobic fermentation bionethanation system of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figure 1, a kind of diphasic anaerobic fermentation bionethanation system, comprises hydrolysis acidification device 14, ferment ation gas producing device 13 and is communicated with the circulation tube 1 of hydrolysis acidification device 14 and ferment ation gas producing device 13; Hydrolysis acidification device 14 top is provided with fluid inlet 2 and air outlet 15, and bottom side is provided with liquid outlet 4, and bottom is provided with mud discharging mouth; Ferment ation gas producing device 13 top is provided with air outlet 3 and effluent weir 6, and the outlet of effluent weir 6 is liquid outlet 9, and bottom side is provided with fluid inlet 8, and bottom is provided with mud discharging mouth; Also establish knot wire filler 7 in ferment ation gas producing device 13, count by volume, the packing fraction of knot wire filler 7 in ferment ation gas producing device 13 is 20%; Ferment ation gas producing device 13 is also provided with attemperator, attemperator comprises heating rod 16 and outer wall thermal insulation layer, the end that heating rod 16 leans out ferment ation gas producing device 13 is temperature probe 5, and attemperator and temperature probe 5 are in temperature constant state in order to keep ferment ation gas producing device 13; Ferment ation gas producing device 13 is also provided with agitator motor 10, and agitator motor 10 is in order to mixed liquor, and the liquid outlet 4 of hydrolysis acidification device 14 is communicated with by circulation tube 1 with the fluid inlet 8 of ferment ation gas producing device 13, and this circulation tube 1 is provided with lift pump 12; Perforated retainer 11 is also provided with in hydrolysis acidification device 14.
Diphasic anaerobic fermentation biogas is carried out to further illustrate diphasic anaerobic fermentation bionethanation system of the present invention below by stalk and changing food waste are put into native system as raw material.
Adopt batch charging, substrate is placed in hydrolysis acidification device 14, fermented liquid sprays from top to bottom on substrate, organic matter in substrate produces organic dissolution fluid under the effect being hydrolyzed flora and acid-producing bacteria group, and (this organic dissolution fluid is acetic acid, the organic acid such as propionic acid or butyric acid), the gas simultaneously produced is overflowed through the air outlet 15 of hydrolysis acidification device 14, organic dissolution fluid is after perforated retainer 11 filters, along with circulation fluid is pumped in ferment ation gas producing device 13 by lift pump 12, the hydraulic detention time regulating ferment ation gas producing device 13 is after 1.5d, within this time, heating rod 16 in ferment ation gas producing device 13, thermopair, controller, the temperature of ferment ation gas producing device 13 controls at 35 DEG C by outer wall thermal insulation layer, organic dissolution fluid is converted into by methanogen the biogas that main component is methane in ferment ation gas producing device 13, biogas is overflowed from the air outlet 3 of ferment ation gas producing device 13, after reaction, remaining organic dissolution fluid flows out ferment ation gas producing device 13 from the liquid outlet 9 of effluent weir 6, returns in hydrolysis acidification device 14, carry out the organic stripping of second time, move in circles by circulation tube 1.
In above-mentioned embodiment, substrate is for mixing stalk and changing food waste completely, stalk is crushed to 5mm through pulverizer, mix completely with changing food waste is disposable, with dry-matter gauge, when the optimum quality ratio of stalk and changing food waste is 3:1, acidizing effect is better, the organic stripping quantity of unit mass (substrate) is 77.6mg/gTS, and the gas production rate of unit mass is 183.8ml/g; Be 416.7gTS/Ld to the circulating fluid flow rate of ferment ation gas producing device 13 with substrate amount of dry matter ratio by hydrolysis acidification device 14 suction; The hydraulic detention time of ferment ation gas producing device 13 is that the aerogenesis effect of 1.5 days is better, and the gas production rate of unit mass is 183.8ml/g; The substrate refulling cycle in hydrolysis acidification device 14 is 28-31 days.
Above-mentioned embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not limited by the examples; other are any do not deviate from spirit of the present invention and principle under do change, modification, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.

Claims (4)

1. a diphasic anaerobic fermentation bionethanation system, it is characterized in that: comprise hydrolysis acidification device, the circulation tube of ferment ation gas producing device and connection hydrolysis acidification device and ferment ation gas producing device, wherein, described hydrolysis acidification device and ferment ation gas producing device all establish fluid inlet, liquid outlet and air outlet, knot wire filler is also established in described ferment ation gas producing device, described knot wire filler accounts for 1/5 of ferment ation gas producing device volume, the perforated retainer of filtration is also provided with in described hydrolysis acidification device, described ferment ation gas producing device is also provided with attemperator, described attemperator comprises heating rod and outer wall thermal insulation layer, the temperature of described ferment ation gas producing device is 35 DEG C, also agitator motor is provided with in described ferment ation gas producing device.
2. diphasic anaerobic fermentation bionethanation system according to claim 1, is characterized in that: the end of described attemperator is provided with temperature probe.
3. diphasic anaerobic fermentation bionethanation system according to claim 1, it is characterized in that: the liquid outlet of described hydrolysis acidification device is communicated with by circulation tube with the fluid inlet of ferment ation gas producing device, this circulation tube is provided with lift pump.
4. diphasic anaerobic fermentation bionethanation system according to claim 1, is characterized in that: described outer wall thermal insulation layer is made up of rubber and plastic insulating cotton.
CN201410077903.XA 2014-03-05 2014-03-05 A kind of diphasic anaerobic fermentation bionethanation system Expired - Fee Related CN103820312B (en)

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CN104478172B (en) * 2014-12-17 2017-02-22 中国科学院生态环境研究中心 Method and device for treating organic wastewater with two-phase anaerobic tubular membrane bioreactor
CN104801529A (en) * 2015-03-31 2015-07-29 深圳市利赛环保科技有限公司 Two-phase wet anaerobic fermentation system capable of reducing scum and sediment
CN105647976B (en) * 2016-03-30 2022-07-15 嘉兴职业技术学院 Method for producing biogas by using chrysanthemum morifolium ramat waste
CN105886396A (en) * 2016-04-15 2016-08-24 东南大学 Two-phase straw anaerobic fermentation device and fermentation method utilizing same
CN108728336B (en) * 2018-07-10 2020-12-22 中国农业大学 Anaerobic fermentation treatment system and method for synchronous deamination of ultrahigh-temperature biological hydrolysis
CN109678571B (en) * 2019-01-30 2021-10-29 东南大学 Heatable drum-type aerobic composting reactor
CN113174314B (en) * 2021-05-11 2021-11-05 巢湖市鑫兴农能源环保有限公司 Straw and excrement mixed anaerobic fermentation reactor and biogas fermentation process thereof

Citations (4)

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EP1818314A3 (en) * 2006-02-13 2008-06-11 Brandenburgische Technische Universität Cottbus Method and biogas facility for the production of biogas from liquids with organic load
DE102007063090A1 (en) * 2007-12-28 2009-07-02 Right-Way-Technologies Gmbh & Co. Kg Method and device for fermenting fluid plant raw materials as substrate for the production of hydrogen-containing biogas in special hydrogen fermenter, comprise controlling the fermenter over measuring variables of pH value and temperature
CN101812401A (en) * 2010-02-03 2010-08-25 中国科学院广州能源研究所 Device for producing biogas by two-phase three-section anaerobic digestion of high solids of perishable organic wastes
CN202766389U (en) * 2012-09-26 2013-03-06 湖南湘牛环保实业有限公司 Novel sewage biological reaction and membrane purification device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1818314A3 (en) * 2006-02-13 2008-06-11 Brandenburgische Technische Universität Cottbus Method and biogas facility for the production of biogas from liquids with organic load
DE102007063090A1 (en) * 2007-12-28 2009-07-02 Right-Way-Technologies Gmbh & Co. Kg Method and device for fermenting fluid plant raw materials as substrate for the production of hydrogen-containing biogas in special hydrogen fermenter, comprise controlling the fermenter over measuring variables of pH value and temperature
CN101812401A (en) * 2010-02-03 2010-08-25 中国科学院广州能源研究所 Device for producing biogas by two-phase three-section anaerobic digestion of high solids of perishable organic wastes
CN202766389U (en) * 2012-09-26 2013-03-06 湖南湘牛环保实业有限公司 Novel sewage biological reaction and membrane purification device

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