CN101812481A - Biogas production method - Google Patents
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- CN101812481A CN101812481A CN201010123033A CN201010123033A CN101812481A CN 101812481 A CN101812481 A CN 101812481A CN 201010123033 A CN201010123033 A CN 201010123033A CN 201010123033 A CN201010123033 A CN 201010123033A CN 101812481 A CN101812481 A CN 101812481A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The invention provides a biogas production method. The method comprises the following steps of: feeding materials, and pre-treating the materials; adding water or biogas slurry into an anaerobic pond where the materials are piled, sealing the anaerobic pond for fermentation, refluxing the biogas slurry or adding water every other 1 to 10 days, periodically stirring the material so as to prevent large-scaled incrustation of the materials, and simultaneously collecting biogas; and after the reaction of the materials in the anaerobic pond is ended, discharging the materials. In the method, the organic materials, of which the total solid content and the suspended matter content are high, can be used as raw materials, the incrustation of the materials is prevented in a process of producing the biogas, and the yield of the biogas produced by degradation and conversion of the materials is high.
Description
[technical field]
The present invention relates to technical field of biological fermentation, particularly a kind of is the biogas production method of raw material with total solidss such as stalk or animal excrement or other biological waste material, organic materials that suspension content is high.
[background technology]
Utilize the high organic materials of total solids, suspension content generally need take strict pre-treatment in the prior art, with the material chopping or pulverize charging, in fermentation unit, carry out anaerobically fermenting then, produce biogas for the method for raw material production biogas.
The fermentation unit that is used for biogas production in the prior art mainly is an anaerobic pond, and anaerobic pond comprises the pond body, and body top in pond has Chi Gai, has waste pipe on the body of pond, the escape pipe of shore pipe and collecting methane.Pollutent enters in the body of pond by waste pipe, by the biochemical reaction of the intravital anaerobic activated sludge in pond, and degraded, conversion organic pollutant, the sediment in the pollutent is discharged by shore pipe through the deposition back.
But adopt aforesaid method and device to produce biogas, if with suspended substance and the high raw material of total solid concentration, because of its solids concn and concentration of suspension height, no matter shred or whether pulverize, all can cause material fluidity poor, input and output material is difficulty relatively.Material is in anaerobic fermentation process, and pool inner water branch gradually reduces, and easily produces scum silica frost, causes pond inner top material easily to produce the crust phenomenon, influences the degraded and the aerogenesis of material; And material fermentation concentration is higher, is unfavorable for the effusion of biogas, influences the treatment effect and the aerogenesis effect of single unit system.
In sum, the method for above-mentioned production biogas of the prior art has following shortcoming:
1, fermentative degradation rate and the utilization ratio to material is low, and factor of created gase is few.
2, the processing treatment of material chopping or pulverizing needs corresponding mechanical means and certain labor force, causes investment and running cost height.If material does not shred or pulverizes, can cause the anaerobic pond difficult feed, more seriously blocking pipe in operational process causes systemic breakdown.
3, biogas production amount and supply are discontinuous, unstable, have influenced in the subsequent step processing such as further purification to biogas, storage, make the biogas can not large-scale production and rationally utilize.High investment and high running cost have also hindered utilizes total solids, material that suspension content is high to be raw material production biogas, also is subjected to great limitation in industrial and agricultural production and application in life.
[summary of the invention]
The technical problem to be solved in the present invention is to provide a kind of biogas production method, can total solids, organic materials that suspension content is high is raw material, prevents the material crust, and material degradation rate and the conversion productive rate height that forms methane.
The technical problem to be solved in the present invention is achieved in that a kind of biogas production method, comprise the steps: step 100, charging and material is carried out pre-treatment, material need not to shred or pulverizes and directly adds inoculum or amendment and mix stack retting in anaerobic pond, fiber softening up to mixture, part decomposing materials wax, pectin, and reach certain temperature; Step 200, inject in the anaerobic pond that water or natural pond liquid finished to the material stack retting, material is as the criterion water level in the pond to flood, and the total solids level in the control anaerobic pond seals and ferments in 10%～20% scope; In step 300, the fermenting process, every 1～10 day backflow natural pond liquid or keep the skin wet, with the range of stage before water level and the sealing and fermenting in the control anaerobic pond within ± 5%, guarantee that the interior total solids level of anaerobic pond is in 10%～20% scope, and regularly stir the extensive crust that prevents material, collect biogas simultaneously; Behind step 400, the anaerobic pond end of run, discharging.
Preferable, described step 100 is to step 400, anaerobic pond is provided with a plurality of, engineering operation is designed to circulation batch type, to guarantee that each engineering operation phase has an anaerobic pond at least at operation, aerogenesis, after an anaerobic pond end of run discharging, carry out charging, stack retting and fermentation gas according to pre-treatment and predetermined fermentation time control material quantity again.And can continuously, stably produce biogas at run duration, make output and supply stable.
Preferable, in the described step 100, material and inoculum or amendment are that layering mixes, and the stack retting time was controlled at 2～15 days, and the moisture content of mixture is controlled in 50%～70% scope, and total solids level is controlled in 30%～50% scope.When described stack retting material leavening temperature more than 42 ℃, the time can make the fiber softening of mixture carry out smoothly at 2～3 days, but also part decomposing materials wax, pectin have improved the temperature of mixture.
Preferable, described step 100 is after adding inoculum or amendment, and after the liquid of the additional natural pond of step 200, the C/N ratio of whole material is controlled in 6～60 scopes.Wherein, the optimum state is that the C/N ratio with whole material is controlled in 25～30 scopes, to improve the effect of producing methane through anaerobic fermentation.In addition, raw material is at least a in dry or fresh crop material, animal excrement, biological waste, the blue-green algae in this step; Described inoculum or amendment are at least a of feces of livestock and poultry, natural pond liquid, methane-generating pit mud, sewage plant sludge, microbiobacterial agent, and raw material sources are wide.
Preferable, in the described step 300, by reflux pump natural pond liquid and excess sludge are discharged simultaneously, to adjust the volumetric loading of anaerobic pond; Its backflow natural pond liquid or the employing automatic spraying device that keeps the skin wet carry out, and described regular stirring adopts reflux pump to carry out automatically, to improve automatization intensity.In addition also can be during anaerobically fermenting, again by artificial or machinery replenish throw in without or passed through the material of pre-treatment, increasing the output of biogas, its amount of replenishing the material of throwing in must guarantee that total solids level in the anaerobic pond is in 10%～25% scope.
The invention has the advantages that: present method has realized that with total solidss such as stalk or animal excrement or other biological waste material, organic materials that suspension content is high be raw material production biogas, can continuously, stably produce biogas at run duration, material degradation rate and the conversion productive rate height that forms methane, can also well prevent the extensive generation of scum silica frost, prevent the material crust, for scale operation biogas lays the foundation.This method range of application is wider, and it can be used to handle various organic pollutants.
[description of drawings]
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the plan structure synoptic diagram of biogas production fermentation unit one preferred embodiment used in the present invention.
Fig. 2 is the cross-sectional schematic along the A-A direction of Fig. 1.
Fig. 3 is the cross-sectional schematic along the B-B direction of Fig. 1.
Fig. 4 is the cross-sectional schematic along the C-C direction of Fig. 1.
[embodiment]
See also Fig. 1 to shown in Figure 4, biogas production fermentation unit used in the present invention, can comprise the fermentation unit more than two 10 that a fermentation unit or next-door neighbour are provided with, being shown as among the figure is the adjacent side by side in twos layouts of four fermentation unit 10, but not as limit.
The flexibility that arbitrary described fermentation unit 10 comprises an anaerobic pond 1, cover this anaerobic pond 1 top is covered skin 2, and is arranged at this anaerobic pond 1 top and is in described flexibility and cover the biogas escape pipe (not shown) of skin 2 inside, a spray equipment 3, and a reflux unit 4.
Described anaerobic pond 1 is used to place stalk and feces of livestock and poultry ferments, and the top of described anaerobic pond 1 is a big open end 11, and the bottom is a wedged bottom 12, and the end that this wedged bottom 12 is in spoil disposal is lower than the relative the other end, is beneficial to bed mud and concentrates to a side, is convenient to spoil disposal.Complex root cross bar 13 is set up corresponding to the default high plane of restriction stalk compartment of terrain in the inside of described anaerobic pond 1, with the high plane of restriction stalk, prevents to produce upper strata stalk and soak solution separation phenomenon because of stalk excessively floats, and guarantees that anaerobically fermenting normally carries out.The top of described anaerobic pond 1 also also is provided with a water sealed tank 14 corresponding to the edge that described flexibility is covered skin 2, to make described anaerobic pond 1 and flexible covering form an airtight anaerobic environment between the skin 2 by the water seal mode, this water sealed tank 14 also has a water sealed tank evacuated tube 141 and water sealed tank upflow tube 142, liquid level in the clear water when being used to keep in repair in the emptied of water sealing groove, constant water sealing groove.Also be communicated with the dirty water inlet pipe 15 of an excrement in the described anaerobic pond 1, the dirty water inlet pipe 15 of described excrement is as the flow channel of feces of livestock and poultry, can add feces of livestock and poultry to improve organism in the anaerobic pond 1 by the dirty water inlet pipe 15 of this excrement when the fermentation gas amount is low, increase anaerobic fermentation tolerance.
Described flexibility is covered skin 2 and is covered in anaerobic pond 1 top, and it is made for soft material that flexibility is covered skin 2, covers plastics such as skin, other polyvinyl chloride, poly-third ethene or modified plastics etc. as adopting red-sludge plastic.Flexibility is covered skin 2 and is utilized the biogas air pressure that produces during the fermentation to cover the supporting motive force of skin 2 as flexibility, makes flexibility cover skin 2 and heaves, thereby realize exoskeletal design, to reduce cost.Flexibility is covered skin 2 and is formed anaerobic environment with anaerobic pond 1, and flexibility is covered skin 2 and also had good heat absorption capacity, makes full use of sun power, improves leavening temperature, the growth, the propagation that help anerobe, fix easy installation, dismounting maintenance, easy, the conveniently moving in pond clearly by linking up with 22.
Described biogas escape pipe is connected with collecting methane house steward (not shown), and described biogas escape pipe is equipped with water seal arrangement (not shown), and water seal arrangement can be collected the water of condensation on the biogas outlet conduit, prevents that the biogas outlet pipe from stopping up, and it is smooth and easy to guarantee to give vent to anger.Described collecting methane house steward end is equipped with constant pressure arrangement (not shown).Keep constant pressure in the treatment unit by constant pressure arrangement, both helped that soft material was covered skin and propped up, can guarantee the operating safety, stable, reliable of treatment unit again.Constant pressure arrangement makes the pressure of anaerobic pond remain the hydraulic pressure of constant pressure arrangement, when the pressure of anaerobic pond during greater than the hydraulic pressure of constant pressure arrangement, can the intravital pressure of anaerobic pond be discharged automatically by pipeline.
Described spray equipment 3 is laid in edge in the top of described anaerobic pond 1, is used for keeping the skin wet to anaerobic pond 1, and it can connect the external water source spray, also can adopt natural pond liquid backflow automatic spray.This spray equipment 3 further comprises the cyclic shower 31 on edge in the top that is set up in described anaerobic pond 1, a plurality of spray headers 32 of uniform distribution on this shower 31.
Described reflux unit 4 is arranged at an end position of described anaerobic pond 1, is shown as the whole left and right outer end of four fermentation unit 10 adjacent side by side cloth postpone in twos among the figure, but not as limit, described reflux unit 4 also can be communicated with described spray equipment 3.Described reflux unit 4 further comprises one jiao at least one water hole 41 of crossing that is arranged on anaerobic pond 1 inside, one is arranged at the backflash 42 of described anaerobic pond 1 outside, one natural pond liquid recycling effluent pipe 43, an and natural pond liquid backflow water inlet pipe 44, described anaerobic pond 1, cross water hole 41, backflash 42, natural pond liquid recycling effluent pipe 43, natural pond liquid backflow water inlet pipe 44, and described spray equipment 3 is communicated with successively, to form liquid return flow line, a natural pond, so, can utilize the natural pond liquid of generation to spray during the fermentation, to keep anaerobic pond 1 water level, material is fully contacted with zymophyte, and prevent that material from floating crust, thereby improve the degradation rate and the biogas yield of material, described natural pond liquid recycling effluent pipe 43 can set up by the pipe trench 16 that defaults in anaerobic pond 1 upper limb.
Described reflux unit 4 also comprises a reflux pump 45 that is arranged at described anaerobic pond bottom, by the control respectively of natural pond liquid return valve (not shown) and spoil disposal valve (not shown), regularly is used for natural pond liquid backflow and bed mud discharging.Described reflux pump 45 also has a pump lifting gear 46, is used for promoting and transferring reflux pump 45, is convenient to the I﹠M of reflux pump 45.Described reflux unit 4 also comprises a tracery wall 47 that is arranged at described water hole 41 front ends excessively, a leakage dropping-board 48 that is arranged at described tracery wall 47 tops and at least one filter screen 49 that is arranged in the described backflash 42, to hold back materials such as bigger stalk of sectional area or feces of livestock and poultry, prevent to stop up reflux pump 45, the lengthening raw material fully reacts aerogenesis in the residence time of anaerobic pond 1, alleviates the follow-up work load simultaneously.
When the present invention utilizes above-mentioned fermentation unit to carry out biogas production, comprise that following embodiment carries out:
Embodiment one
Step 100, the big open end 11 by described anaerobic pond 1 carry out charging, and material carried out pre-treatment, raw material is at least a in dry or fresh crop material, animal excrement, the biological waste, material need not to shred or pulverizes and directly adds inoculum or amendment and mix stack retting in anaerobic pond 1, fiber softening up to mixture, part decomposing materials wax, pectin, and reach certain temperature; Material and inoculum or amendment are that layering mixes, the stack retting time was controlled at 7 days, the moisture content of mixture is controlled in 60%～65% scope, total solids level is controlled in 35%～40% scope, the fiber softening of mixture is carried out smoothly, but also part decomposing materials wax, pectin have improved the temperature of mixture.Described inoculum or amendment are at least a of feces of livestock and poultry, natural pond liquid, methane-generating pit mud, sewage plant sludge, microbiobacterial agent, and raw material sources are wide.After adding inoculum or amendment, the C/N ratio of whole material is controlled in 30～40 scopes, to improve the effect of producing methane through anaerobic fermentation.
Step 200, inject in the anaerobic pond 1 that water or natural pond liquid finished to the material stack retting by described spray equipment 3, material is as the criterion water level in the pond to flood, and the total solids level in the control anaerobic pond 1 is in 12%～15% scope, cover skin 2 with flexibility and be covered in top, anaerobic reaction chamber, sealing is fermented; Replenish after the liquid of natural pond, the C/N ratio of whole material is controlled in 25～30 scopes, to improve the effect of producing methane through anaerobic fermentation.
In step 300, the fermenting process, every 4 days backflow natural pond liquid or keep the skin wet, with the range of stage before water level and the sealing and fermenting in the control anaerobic pond 1 within ± 5%, total solids level in the assurance anaerobic pond 1 is in 10%～15% scope, and regularly stir the extensive crust that prevents material, collect biogas simultaneously; By reflux pump 45 natural pond liquid and excess sludge are discharged simultaneously, to adjust the volumetric loading of anaerobic pond 1; Its backflow natural pond liquid or the employing spray equipment 3 that keeps the skin wet carry out automatically, and described regular stirring adopts reflux pump 45 to carry out automatically, to improve automatization intensity.In addition also can be during anaerobically fermenting, again by artificial or machinery replenish throw in without or passed through the material of pre-treatment, increasing the output of biogas, its amount of replenishing the material of throwing in must guarantee that total solids level in the anaerobic pond is in 10%～20% scope.
Behind step 400, anaerobic pond 1 end of run, discharging.
Embodiment two
Step 100, the big open end 11 by described anaerobic pond 1 carry out charging, and material carried out pre-treatment, raw material is at least a in dry or fresh crop material, animal excrement, the biological waste, material need not to shred or pulverizes and directly adds inoculum or amendment and mix stack retting in anaerobic pond 1, fiber softening up to mixture, part decomposing materials wax, pectin, and reach certain temperature; Material and inoculum or amendment are that layering mixes, the stack retting time is 15 days, the moisture content of mixture is controlled in 65%～70% scope, total solids level is controlled in 30%～35% scope, the fiber softening of mixture is carried out smoothly, but also part decomposing materials wax, pectin have improved the temperature of mixture.Described inoculum or amendment are at least a of feces of livestock and poultry, natural pond liquid, methane-generating pit mud, sewage plant sludge, microbiobacterial agent, and raw material sources are wide.After adding inoculum or amendment, the C/N ratio of whole material is controlled in 40～60 scopes, to improve the effect of producing methane through anaerobic fermentation.
Step 200, inject in the anaerobic pond 1 that water or natural pond liquid finished to the material stack retting by described spray equipment 3, material is as the criterion water level in the pond to flood, and the total solids level in the control anaerobic pond 1 is in 10%～12% scope, cover skin 2 with flexibility and be covered in top, anaerobic reaction chamber, sealing is fermented; Replenish after the liquid of natural pond, the C/N ratio of whole material is controlled in 30～60 scopes.
In step 300, the fermenting process, every 1 day backflow natural pond liquid or keep the skin wet, with the range of stage before water level and the sealing and fermenting in the control anaerobic pond 1 within ± 5%, total solids level in the assurance anaerobic pond 1 is in 10%～20% scope, and regularly stir the extensive crust that prevents material, collect biogas simultaneously; By reflux pump 45 natural pond liquid and excess sludge are discharged simultaneously, to adjust the volumetric loading of anaerobic pond 1; Its backflow natural pond liquid or the employing spray equipment 3 that keeps the skin wet carry out automatically, and described regular stirring adopts reflux pump 45 to carry out automatically, to improve automatization intensity.In addition also can be during anaerobically fermenting, again by artificial or machinery replenish throw in without or passed through the material of pre-treatment, increasing the output of biogas, its amount of replenishing the material of throwing in must guarantee that total solids level in the anaerobic pond is in 10%～25% scope.
Behind step 400, anaerobic pond 1 end of run, discharging.
Embodiment three
Step 100, the big open end 11 by described anaerobic pond 1 carry out charging, and material carried out pre-treatment, raw material is dry or fresh blue-green algae, need not to shred or pulverize and directly add inoculum or amendment and in anaerobic pond 1, mix stack retting, fiber softening up to mixture, part decomposing materials wax, pectin, and reach certain temperature; Material and inoculum or amendment are that layering mixes, described stack retting material leavening temperature is more than 42 ℃, the stack retting time was controlled at 2 days, the moisture content of mixture is controlled in 50%～60% scope, total solids level is controlled in 40%～50% scope, the fiber softening of mixture is carried out smoothly, but also part decomposing materials wax, pectin have improved the temperature of mixture.Described inoculum or amendment are at least a of feces of livestock and poultry, natural pond liquid, methane-generating pit mud, sewage plant sludge, microbiobacterial agent, and raw material sources are wide.After adding inoculum or amendment, the C/N ratio of whole material is controlled in 6～30 scopes.
Step 200, inject in the anaerobic pond 1 that water or natural pond liquid finished to the material stack retting by described spray equipment 3, material is as the criterion water level in the pond to flood, and the total solids level in the control anaerobic pond 1 is in 15%～20% scope, cover skin 2 with flexibility and be covered in top, anaerobic reaction chamber, sealing is fermented; Replenish after the liquid of natural pond, the C/N ratio of whole material is controlled in 6～25 scopes, to improve the effect of producing methane through anaerobic fermentation.
In step 300, the fermenting process, every 10 days backflow natural pond liquid or keep the skin wet, with the range of stage before water level and the sealing and fermenting in the control anaerobic pond 1 within ± 5%, total solids level in the assurance anaerobic pond 1 is in 10%～20% scope, and regularly stir the extensive crust that prevents material, collect biogas simultaneously; By reflux pump 45 natural pond liquid and excess sludge are discharged simultaneously, to adjust the volumetric loading of anaerobic pond 1; Its backflow natural pond liquid or the employing spray equipment 3 that keeps the skin wet carry out automatically, and described regular stirring adopts reflux pump 45 to carry out automatically, to improve automatization intensity.In addition also can be during anaerobically fermenting, again by artificial or machinery replenish throw in without or passed through the material of pre-treatment, increasing the output of biogas, its amount of replenishing the material of throwing in must guarantee that total solids level in the anaerobic pond is in 10%～25% scope.
Behind step 400, anaerobic pond 1 end of run, discharging.
Because the middle anaerobic pond 1 of above-mentioned fermentation unit is provided with a plurality of, engineering operation is designed to circulation batch type, to guarantee that each engineering operation phase has an anaerobic pond at least at operation, aerogenesis, after an anaerobic pond end of run discharging, carry out charging, stack retting and fermentation gas according to pre-treatment and predetermined fermentation time control material quantity again.And can continuously, stably produce biogas at run duration, make output and supply stable.
In sum, the present invention is the technology and the fermentation unit thereof of raw material production biogas with total solidss such as stalk or animal excrement or other biological waste material, organic materials that suspension content is high, particularly provide a kind of and can continuously, stably produce biogas at run duration, material degradation rate and the conversion productive rate height that forms methane, make things convenient for material charging, discharging, can also well prevent the extensive generation of scum silica frost, prevent the material crust, the capacity utilization height, technology and corresponding processing means thereof that can scale operation biogas.Simultaneously, the technology of the present invention and device also can be used to handle various organic pollutants.
Claims (9)
1. a biogas production method is characterized in that: comprise the steps:
Step 100, charging are also carried out pre-treatment to material, material need not to shred or pulverizes and directly adds inoculum or amendment and mix stack retting in anaerobic pond, up to the fiber softening of mixture, part decomposing materials wax, pectin, and reach certain temperature;
Step 200, inject in the anaerobic pond that water or natural pond liquid finished to the material stack retting, material is as the criterion water level in the pond to flood, and the total solids level in the control anaerobic pond seals and ferments in 10%～20% scope;
In step 300, the fermenting process, every 1～10 day backflow natural pond liquid or keep the skin wet, with the range of stage before water level and the sealing and fermenting in the control anaerobic pond within ± 5%, guarantee that the interior total solids level of anaerobic pond is in 10%～20% scope, and regularly stir the extensive crust that prevents material, collect biogas simultaneously;
Behind step 400, the anaerobic pond end of run, discharging.
2. a kind of biogas production method according to claim 1, it is characterized in that: described step 100 is to step 400, anaerobic pond is provided with a plurality of, engineering operation is designed to circulation batch type, to guarantee that each engineering operation phase has an anaerobic pond at least at operation, aerogenesis, after an anaerobic pond end of run discharging, carry out charging, stack retting and fermentation gas according to pre-treatment and predetermined fermentation time control material quantity again.
3. a kind of biogas production method according to claim 1 and 2, it is characterized in that: in the described step 100, material and inoculum or amendment are that layering mixes, the stack retting time was controlled at 2～15 days, the moisture content of mixture is controlled in 50%～70% scope, and total solids level is controlled in 30%～50% scope.
4. a kind of biogas production method according to claim 3 is characterized in that: described stack retting material leavening temperature is more than 42 ℃, and the time was at 2～3 days.
5. a kind of biogas production method according to claim 1 and 2 is characterized in that: described step 100 is after adding inoculum or amendment, and after the liquid of the additional natural pond of step 200, the C/N ratio of whole material is controlled in 6～60 scopes.
6. a kind of biogas production method according to claim 5 is characterized in that: the C/N of described whole material is than further being controlled in 25～30 scopes.
7. a kind of biogas production method according to claim 1 and 2 is characterized in that: in the described step 300, by reflux pump natural pond liquid and excess sludge are discharged simultaneously, to adjust the volumetric loading of anaerobic pond; The described backflow natural pond liquid or the employing automatic spraying device that keeps the skin wet carry out; Described regular stirring adopts described reflux pump to carry out automatically.
8. a kind of biogas production method according to claim 1 and 2 is characterized in that: at least a in dry or fresh crop material, animal excrement, biological waste, the blue-green algae of the raw material in the described step 100; Described inoculum or amendment are at least a of feces of livestock and poultry, natural pond liquid, methane-generating pit mud, sewage plant sludge, microbiobacterial agent.
9. a kind of biogas production method according to claim 1 and 2, it is characterized in that: in the described step 300, during the anaerobically fermenting, again by artificial or machinery replenish throw in without or passed through the material of pre-treatment, to increase the output of biogas, its amount of replenishing the material of throwing in must guarantee that the interior total solids level of anaerobic pond is in 10%～25% scope.
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| CN102344943A (en) * | 2011-10-17 | 2012-02-08 | 王琳 | Method for combining sludge treatment and straw treatment to produce marsh gas |
| CN105018344A (en) * | 2015-08-04 | 2015-11-04 | 常州亚环环保科技有限公司 | Biological-chemical circulating biogas fermentation device capable of continuously feeding straws |
| CN105132058A (en) * | 2015-09-21 | 2015-12-09 | 七台河宝泰隆煤化工股份有限公司 | Method for preparing CNG through biomass |
| CN105420284A (en) * | 2015-12-17 | 2016-03-23 | 广西壮族自治区林业科学研究院 | Method for preparing biogas by rice straw |
| CN105420284B (en) * | 2015-12-17 | 2020-04-10 | 广西壮族自治区林业科学研究院 | Method for preparing biogas from rice straws |
| CN106148171A (en) * | 2016-08-22 | 2016-11-23 | 东北师范大学 | The degraded of a kind of straw and the device of anaerobic ferment for methane and using method |
| CN106916732A (en) * | 2017-05-17 | 2017-07-04 | 农业部沼气科学研究所 | Honeybee van-type stalk fermentation system and its fermentation process |
| CN106916732B (en) * | 2017-05-17 | 2019-01-01 | 农业部沼气科学研究所 | Bee van-type stalk fermentation system and its fermentation process |
| CN110316822A (en) * | 2019-07-30 | 2019-10-11 | 上海嘉伟环保科技有限公司 | A kind of hydrolock clean energy resource on inspection manhole utilizes device |
| CN112094870A (en) * | 2020-09-28 | 2020-12-18 | 南京师范大学 | Method for producing biogas by utilizing blue algae and bottom mud through co-fermentation |
| CN112094870B (en) * | 2020-09-28 | 2022-09-20 | 南京师范大学 | Method for producing biogas by utilizing blue algae and bottom mud through co-fermentation |
| CN112626130A (en) * | 2021-01-07 | 2021-04-09 | 安庆市绿巨人环境技术股份有限公司 | Wet anaerobic fermentation method |
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Application publication date: 20100825 |