CN103820312A - Two- phase anerobic fermentation biogas production system - Google Patents

Two- phase anerobic fermentation biogas production system Download PDF

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Publication number
CN103820312A
CN103820312A CN201410077903.XA CN201410077903A CN103820312A CN 103820312 A CN103820312 A CN 103820312A CN 201410077903 A CN201410077903 A CN 201410077903A CN 103820312 A CN103820312 A CN 103820312A
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fermentation
gas producing
producing device
phase
anaerobic fermentation
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CN201410077903.XA
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CN103820312B (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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Southeast University
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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
    • 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
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/58—Reaction vessels connected in series or in parallel
    • 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
    • C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C12M29/02—Percolation
    • 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
    • C12M41/18—Heat exchange systems, e.g. heat jackets or outer envelopes
    • 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
    • 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

Abstract

The invention discloses a two-phase anerobic fermentation biogas production system. The biogas production system comprises a hydrolytic acidification device, a fermentation and aerogenesis device and a circulation pipe communicated with the hydrolytic acidification device and the fermentation and aerogenesis device, wherein a liquid inlet, a liquid outlet and an air outlet are formed in each of the hydrolytic acidification device and the fermentation and aerogenesis device; a silk knot filler is arranged inside the fermentation and aerogenesis device; the silk knot filler accounts for one fifth of the volume of the fermentation and aerogenesis device. According to the invention, acid production phase and the aerogenesis phase are conducted in two independent devices respectively, so as to provide required optimal conditions for acid-producing bacteria and methane-producing bacteria respectively and to avoid the inhibiting effect between microbes and the environment on the microbes; compared with single-phase anerobic fermentation reactors, the two-phase anerobic fermentation reactor can better soundly play the activity of the microbes, improve the effect of treatment, and further solve the problems of scum, crusting and large emission of biogas liquid occurred in the single-phase anerobic fermentation reactors.

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, have caused a large amount of agricultural crop straws to discard in field and have been committed to the flames.Crop straw burning harm is huge, for example: (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) so easy initiation fire of burning that does not add any measure, threatens 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 to producing methane through anaerobic fermentation; can solve Rural areas problem of environmental pollution on the one hand, also can produce on the other hand clean energy biogas, both meet the needs of environment protection; the wasting of resources be can avoid again, environmental protection, the energy, resource reutilization comprehensive benefit realized.Changing food waste and stalk are all to have higher production potential, and are all unmanageable rural organic wastes, and single straw anaerobic processes that fermentation period is long and C/N is higher, and single changing food waste anaerobically fermenting is unstable and acidifying very easily occurs suppress.
At present, stalk anaerobic fermentation produces marsh gas reactor and is mainly homogenous anaerobic fermentation reactor.Homogenous anaerobic fermentation reactor is that biogas fermentation material is put in a device, and the product acid of biogas fermentation and product methane phase are united two into one, and in same device, has regulated voluntarily.In addition, homogenous anaerobic fermentation reactor is simple in structure, and gas producing efficiency is low, and homogenous anaerobic reactor can cause scum silica frost, crust and the large problem of natural pond liquid quantity discharged, has greatly increased 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, system of the present invention adopts rational process layout, simple in structure, 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, on described hydrolysis acidification device and ferment ation gas producing device, all establish fluid inlet, liquid outlet and air outlet, in described ferment ation gas producing device, also establish knot wire filler, 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, in described ferment ation gas producing device, be also provided with agitator motor.
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 is independently to produce respectively acid phase and aerogenesis stage in device at two, for acid-producing bacteria and methanogen provide required separately top condition, avoid in homogenous anaerobic zymotechnique between microorganism and the restraining effect of environment to microorganism, diphasic anaerobic fermentation reactor more can be given full play to microbic activity than homogenous anaerobic fermentation reactor, improve treatment effect, and it has also solved the reactor scum silica frost that homogenous anaerobic fermentation reactor occurs, crust and the large problem of natural pond liquid quantity discharged, therefore, system of the present invention has simple and reasonable, fermentation gas rate is high, prepared using fully and the little advantage of natural pond liquid generation.
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 tops are 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 tops are 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; In ferment ation gas producing device 13, also establish knot wire filler 7, meter 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 order to keep ferment ation gas producing device 13 in temperature constant state; 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; In hydrolysis acidification device 14, be also provided with perforated retainer 11.
Carry out diphasic anaerobic fermentation biogas and 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 to hydrolysis acidification device 14, fermented liquid sprays from top to bottom on substrate, organic matter in substrate produces organic dissolution fluid under hydrolysis flora and acid-producing bacteria group's effect, and (this organic matter dissolution fluid is acetic acid, the organic acid such as propionic acid or butyric acid), produced simultaneously gas is overflowed through the air outlet 15 of hydrolysis acidification device 14, organic dissolution fluid is after perforated retainer 11 filters, along with being raised pump 12, circulation fluid pumps in ferment ation gas producing device 13, after the hydraulic detention time of adjusting ferment ation gas producing device 13 is 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 is controlled at 35 ℃ 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 by circulation tube 1, carries out organic stripping for the second time, moves in circles.
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, in amount of dry matter, 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 77.6 mg/gTS, and the gas production rate of unit mass is 183.8ml/g; Be 416.7gTS/Ld by hydrolysis acidification device 14 suction to the circulating fluid flow rate of ferment ation gas producing device 13 with substrate amount of dry matter ratio; 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 preferably embodiment of the present invention; but embodiments of the present invention are not limited by the examples; other are any does not deviate from change, the modification done under spirit of the present invention and principle, substitute, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.

Claims (7)

1. a diphasic anaerobic fermentation bionethanation system, it is characterized in that: 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, on described hydrolysis acidification device and ferment ation gas producing device, all establish fluid inlet, liquid outlet and air outlet, in described ferment ation gas producing device, also establish knot wire filler, described knot wire filler accounts for 1/5 of ferment ation gas producing device volume.
2. diphasic anaerobic fermentation bionethanation system according to claim 1, is characterized in that: described ferment ation gas producing device is also provided with attemperator.
3. diphasic anaerobic fermentation bionethanation system according to claim 2, is characterized in that: described attemperator comprises heating rod and outer wall thermal insulation layer.
4. diphasic anaerobic fermentation bionethanation system according to claim 3, is characterized in that: the end of described attemperator is provided with temperature probe.
5. diphasic anaerobic fermentation bionethanation system according to claim 2, is characterized in that: in described ferment ation gas producing device, be also provided with agitator motor.
6. diphasic anaerobic fermentation bionethanation system according to claim 5, 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, and this circulation tube is provided with lift pump.
7. diphasic anaerobic fermentation bionethanation system according to claim 3, 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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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104478172A (en) * 2014-12-17 2015-04-01 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
CN105647976A (en) * 2016-03-30 2016-06-08 嘉兴职业技术学院 Method using chrysanthemum morifolium ramat wastes to produce biogas
CN105886396A (en) * 2016-04-15 2016-08-24 东南大学 Two-phase straw anaerobic fermentation device and fermentation method utilizing same
CN108728336A (en) * 2018-07-10 2018-11-02 中国农业大学 A kind of superhigh temperature biological hydrolysis synchronizes the anaerobic fermentation processing system and method for deamination
CN113174314A (en) * 2021-05-11 2021-07-27 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
CN109678571B (en) * 2019-01-30 2021-10-29 东南大学 Heatable drum-type aerobic composting reactor

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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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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104478172A (en) * 2014-12-17 2015-04-01 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
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
CN105647976A (en) * 2016-03-30 2016-06-08 嘉兴职业技术学院 Method using chrysanthemum morifolium ramat wastes to produce biogas
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
CN108728336A (en) * 2018-07-10 2018-11-02 中国农业大学 A kind of superhigh temperature biological hydrolysis synchronizes the anaerobic fermentation processing system and method for deamination
CN109678571B (en) * 2019-01-30 2021-10-29 东南大学 Heatable drum-type aerobic composting reactor
CN113174314A (en) * 2021-05-11 2021-07-27 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
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

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