CN109371097A - The method that anaerobic digestion fiber and waste grease two-stage anaerobic fermentation produce biogas - Google Patents
The method that anaerobic digestion fiber and waste grease two-stage anaerobic fermentation produce biogas Download PDFInfo
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- CN109371097A CN109371097A CN201811397885.8A CN201811397885A CN109371097A CN 109371097 A CN109371097 A CN 109371097A CN 201811397885 A CN201811397885 A CN 201811397885A CN 109371097 A CN109371097 A CN 109371097A
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P39/00—Processes involving microorganisms of different genera in the same process, simultaneously
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P5/00—Preparation of hydrocarbons or halogenated hydrocarbons
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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Abstract
The invention belongs to biomass energy application fields, and in particular to a kind of method of anaerobic digestion fiber and waste grease two-stage anaerobic fermentation production biogas includes the following steps: (1) anaerobic digestion fiber using acetic acid and pretreatment with agueous Ammonia；(2) anaerobically digested sludge, fat acid decomposition bacterium are added in basal medium, as anaerobic fermentation bacterial；(3) addition inorganic medium obtains mixture after mixing pretreated anaerobic digestion fiber and anaerobic fermentation bacterial；(4) active carbon is added into mixture and is sufficiently mixed to obtain final mixture；(5) methane-generating pit is cleaned, and extracts liquid in methane-generating pit out；(6) final mixture, waste grease and additive are put into methane-generating pit；(7) combustible fuel is taken, is placed in container, loses container into methane-generating pit after lighting；(8) in fuel combustion, methane tank cover is closed, is sealed processing.The present invention takes full advantage of anaerobic digestion fiber and waste grease, and gas production is big, and gas production rate is fast.
Description
Technical field
The invention belongs to biomass energy application fields, and in particular to a kind of anaerobic digestion fiber and waste grease two-stage joint
The method of producing methane through anaerobic fermentation.
Background technique
Biogas mainly utilizes the organic matters such as animal wastes, stalk, industrial organic waste, domestic waste to pass through micro- life
Object anaerobic digestion techniques produce, and main component methane contained in generated biogas accounts for the 40-80% of its total amount.Every cubic metre
Biogas completely burned is equivalent to heat caused by 0.7kg standard coal combustion, therefore biogas is a kind of important recyclable organism
Mass-energy source.Wherein, the wastes such as crop material, gourd, fruit and vegetable are the good raw materials of anaerobic fermentation production biogas, and carbohydrate contains
Amount is high, and raw material is easy to get, but nitrogen content is few, and therefore, methane content when anaerobic fermentation only has 50% or so, directly reduces natural pond
Air lift it is pure or power generation efficiency.The Chinese patent of Publication No. CN104328142A provides a kind of agricultural crop straw and vegetables are useless
The method of object high solid mixed fermentation production biogas.Directly by vegetables, stalk carries out mixed fermentation with treated, although producing
It increases in terms of gas efficiency, but still the problem that unresolved gas producing efficiency is low.The Chinese invention of Publication No. CN108546729A
Patent discloses a kind of method of anaerobic fermentation production biogas, produces biogas, biogas yield and production gas velocity by fermenting twice
Although rate is promoted, complex steps are not suitable for practical application.
In order to improve energy quality, existing research at present produces volatile fatty acid using anaerobic fermentation means, with volatilization
Property fatty acid be intermediary produce the high-valued hydro carbons energy.Volatile fatty acid is with short production cycle, and yield is high, but there are wood fibres
Plain utilization rate low feature, principal degradation hemicellulose cause a large amount of rich cellulose-containing biogas residues to generate, and such biogas residue claims
For anaerobic digestion fiber.Anaerobic digestion fiber is used to further to produce biogas, is not only provided in volatile fatty acid production
The new way that a large amount of biogas residues utilize, and the full effect for also achieving biomass resource utilizes.Rarely have document report anaerobism to disappear at present
The method that chemical fibre dimension further produces biogas.
Rich in the organic matter and difficulty for having easily biological-degradable in the waste water of generations such as catering trade, slaughterhouse and meat products processing factory
Biodegradable grease is wherein rich in various animal and plant fats, at present both at home and abroad to such waste grease in restaurant kitchen rubbish
There are mainly two types of the modes of resource utilization: first is that it is refined into biodiesel after separating in kitchen garbage, but it is biological
Diesel production technique is cumbersome, process is complicated, is difficult to promote in；Direct producing methane through anaerobic fermentation due to its process is simple by
More and more concerns, but it is long to easily cause fermentation period due to the poorly water-soluble of grease for directly anaerobic fermentation；Fat metabolic
Intermediate product long chain fatty acids can usually be accumulated in system, to anaerobe generate depression effect, especially UASB detest
In oxygen digestion reactor, anaerobic digester system is easily caused to collapse.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is to provide a kind of anaerobic digestion fiber and waste grease two-stages
Anaerobic fermentation produce biogas method, this method gas production is big, and gas production rate is fast, and take full advantage of anaerobic digestion fiber and
Waste grease resource.
To achieve the above object, the present invention adopts the following technical scheme:
The present invention provides a kind of method that anaerobic digestion fiber and waste grease two-stage anaerobic fermentation produce biogas, the sides
Method includes the following steps:
(1) anaerobic digestion fiber pre-processes: anaerobic digestion fiber pre-processes 2h, liquid-solid ratio 10mL/ using acetic acid at 121 DEG C
g；1h is pre-processed at 121 DEG C using ammonium hydroxide after the completion of acetic acid pretreatment, will be done after the anaerobic digestion fiber wash pre-processed
It is dry；
(2) it prepares anaerobic fermentation bacterial: anaerobically digested sludge, fat acid decomposition bacterium being added in basal medium, as anaerobism
Fermenting microbe；The mass ratio of anaerobically digested sludge, fat acid decomposition bacterium and basal medium is 120-210:1:1000；
(3) it adds inorganic medium: adding nothing after the pretreated anaerobic digestion fiber of step (1) and anaerobic fermentation bacterial are mixed
Machine medium obtains mixture, and the mass ratio of the inorganic medium, pretreatment anaerobic digestion fiber and anaerobic fermentation bacterial is 4-11:
100:24；
(4) it adds active carbon: adding active carbon into mixture obtained by step (3) and be sufficiently mixed to obtain final mixture, institute
The mass ratio for stating active carbon and mixture is 1:5-8；
(5) it cleans methane-generating pit: cleaning methane-generating pit with clear water, and extract liquid in methane-generating pit out；
(6) it feeds intake: it is equal successively to put into final mixture described in step (4), waste grease and additive mixing into methane-generating pit
Even, the mass percent of final mixture, waste grease and additive is 100:1.8-2.5:0.1-0.15；
(7) prepared by anaerobic environment: taking combustible fuel, is placed in large container, loses container in methane-generating pit after lighting；
(8) it seals: in fuel combustion, methane tank cover being closed, is sealed processing.
Preferably, step (1) the quality of acetic acid score 4%, the ammonium hydroxide mass fraction 10%.
Preferably, step (2) basal medium are as follows: urea 0.1-1g/L, magnesium chloride 2-3g/L, potassium dihydrogen phosphate
1-2g/ L, calcium chloride 0.1-0.3g/L, ferrous sulfate 1-2 mg/L and olive oil 2-20g/ L.
Preferably, step (2) the fat acid decomposition bacterium is acid-producing Klebsiella bacterium and Burkholderia quality
Mixture than 1:1.
Preferably, in step (2), the anaerobically digested sludge of waste water treatment system is taken, is added in basal medium, then is added
Stuffing fat degradation bacteria, 35 DEG C of culture domestications, as anaerobic fermentation bacterial.
Preferably, step (3) described inorganic medium includes quartz sand, bead and sand grains mixture in any proportion, is situated between
Plasmid diameter is 2-5mm.
Preferably, step (4) active carbon is cell culture grade active carbon.
Preferably, step (6) described additive includes Zn, Mn, Co and Ni, content Zn:3-6g/L, Mn:3-6g/L,
Co:1-2g/L, Ni:1-2g/L.
Preferably, step (6) methane-generating pit is residents methane-generating pit.
Preferably, step (7) combustible fuel is alcohol or kerosene.
The invention has the following beneficial effects:
(1) anaerobic fermentation bacterial is by being enriched with and taming acquisition, and anaerobically digested sludge, fat acid decomposition bacterium and base in the present invention
The mass ratio of basal culture medium is 120-210:1:1000, and wherein microorganism type is abundant, hydrolytic bacteria and methanogen content and
Activity is higher, has the function of good grease anaerobic digestion methane phase, improves the utilization rate and gas production of waste grease.
(2) in the present invention, acid-producing Klebsiella bacterium and onion Burkholder are added in the anaerobic fermentation bacterial of use
The mixture of Salmonella mass ratio 1:1 has good and efficient yielding lipase activity and characteristic of lactic acid production, improves anaerobic fermentation bacterium
The fat acid decomposition efficiency of kind, is conducive to the degradation of grease, provides good carbon source for methanogen floras, promotes and produces biogas mistake
Continuing and stablizing for journey, improves gas production rate and conversion ratio.
(3) present invention is added to active carbon, substantially increases anaerobic digestion fiber and waste grease two-stage joint anaerobism hair
Ferment produces methane gas producing performance, compared with being not added with active carbon, produces gas peak period and is advanced by 10-13 days, and gas production rate is improved,
And the cumulative gas production of anaerobic fermentation is also greatly improved, the present invention also added inorganic medium, increase microorganism with
The attachment and contact area of grease, thus increase digestion rate and conversion ratio.
(4) present invention has carried out the two-step method of acetic acid and ammonium hydroxide to anaerobic digestion fiber, compared to conventional independent second
Acid processing or independent AMMONIA TREATMENT, have higher gas producing efficiency.
Specific embodiment
Present invention will be further explained below with reference to specific examples.These embodiments are merely to illustrate the present invention and do not have to
In limiting the scope of the invention.
Embodiment 1
The method for present embodiments providing a kind of anaerobic digestion fiber and waste grease two-stage anaerobic fermentation production biogas, it is described
Method includes the following steps:
(1) anaerobic digestion fiber pre-processes: anaerobic digestion fiber pre-processes 2h, liquid using 4% acetic acid of mass fraction at 121 DEG C
Gu than being 10mL/g；1h is pre-processed at 121 DEG C using 10% ammonium hydroxide of mass fraction after the completion of acetic acid pretreatment, will have been pre-processed
Anaerobic digestion fiber wash after it is dry；
(2) it prepares anaerobic fermentation bacterial: anaerobically digested sludge, fat acid decomposition bacterium being added in basal medium, as anaerobism
Fermenting microbe；The mass ratio of anaerobically digested sludge, fat acid decomposition bacterium and basal medium is 120:1:1000；
(3) it adds inorganic medium: adding nothing after the pretreated anaerobic digestion fiber of step (1) and anaerobic fermentation bacterial are mixed
Machine medium obtains mixture, and the mass ratio of the inorganic medium, pretreatment anaerobic digestion fiber and anaerobic fermentation bacterial is 4:
100:24；
(4) it adds active carbon: adding active carbon into mixture obtained by step (3) and be sufficiently mixed to obtain final mixture, institute
The mass ratio for stating active carbon and mixture is 1:5；
(5) it cleans methane-generating pit: cleaning methane-generating pit with clear water, and extract liquid in methane-generating pit out；
(6) it feeds intake: successively putting into final mixture, waste grease and additive described in step (4) into residents methane-generating pit
It is uniformly mixed, the mass percent of final mixture, waste grease and additive is 100:1.8:0.1；
(7) prepared by anaerobic environment: taking alcohol to be placed in large container, loses container in methane-generating pit after lighting；
(8) it seals: in alcohol burn, residents methane tank cover being closed, is sealed processing.
The present embodiment step (2) described basal medium are as follows: urea 0.1g/L, magnesium chloride 2g/L, potassium dihydrogen phosphate 1g/
L, calcium chloride 0.1g/L, ferrous sulfate 1mg/L and olive oil 2g/ L.
The present embodiment step (2) fat acid decomposition bacterium is acid-producing Klebsiella bacterium and Burkholderia quality
Mixture than 1:1.
In the present embodiment step (2), the anaerobically digested sludge of waste water treatment system is taken, is added in basal medium, then
Add fat acid decomposition bacterium, 35 DEG C of culture domestications, as anaerobic fermentation bacterial.
The present embodiment step (3) described inorganic medium includes quartz sand, bead and sand grains by 1:1:1 mixture, medium
Partial size is 2mm.
The present embodiment step (4) active carbon is cell culture grade active carbon.
The present embodiment step (6) described additive includes Zn, Mn, Co and Ni, content Zn:3g/L, Mn:3g/L, Co:
1g/L, Ni:1g/L.
Embodiment 2
The method for present embodiments providing a kind of anaerobic digestion fiber and waste grease two-stage anaerobic fermentation production biogas, it is described
Method includes the following steps:
(1) anaerobic digestion fiber pre-processes: anaerobic digestion fiber pre-processes 2h, liquid using 4% acetic acid of mass fraction at 121 DEG C
Gu than being 10mL/g；1h is pre-processed at 121 DEG C using 10% ammonium hydroxide of mass fraction after the completion of acetic acid pretreatment, will have been pre-processed
Anaerobic digestion fiber wash after it is dry；
(2) it prepares anaerobic fermentation bacterial: anaerobically digested sludge, fat acid decomposition bacterium being added in basal medium, as anaerobism
Fermenting microbe；The mass ratio of anaerobically digested sludge, fat acid decomposition bacterium and basal medium is 160:1:1000；
(3) it adds inorganic medium: adding nothing after the pretreated anaerobic digestion fiber of step (1) and anaerobic fermentation bacterial are mixed
Machine medium obtains mixture, and the mass ratio of the inorganic medium, pretreatment anaerobic digestion fiber and anaerobic fermentation bacterial is 2:25:
6；
(4) it adds active carbon: adding active carbon into mixture obtained by step (3) and be sufficiently mixed to obtain final mixture, institute
The mass ratio for stating active carbon and mixture is 1:6；
(5) it cleans methane-generating pit: cleaning methane-generating pit with clear water, and extract liquid in methane-generating pit out；
(6) it feeds intake: successively putting into final mixture, waste grease and additive described in step (4) into residents methane-generating pit
It is uniformly mixed, the mass percent of final mixture, waste grease and additive is 100:2.3:0.12；
(7) prepared by anaerobic environment: taking kerosene to be placed in large container, loses container in methane-generating pit after lighting；
(8) it seals: in kerosene burning, residents methane tank cover being closed, processing is sealed.
The present embodiment step (2) described basal medium are as follows: urea 0.5g/L, magnesium chloride 2.5g/L, potassium dihydrogen phosphate 1.5
G/ L, calcium chloride 0.2g/L, ferrous sulfate 1.5mg/L and olive oil 10g/ L.
The present embodiment step (2) fat acid decomposition bacterium is acid-producing Klebsiella bacterium and Burkholderia quality
Mixture than 1:1.
In the present embodiment step (2), the anaerobically digested sludge of waste water treatment system is taken, is added in basal medium, then
Add fat acid decomposition bacterium, 35 DEG C of culture domestications, as anaerobic fermentation bacterial.
The present embodiment step (3) described inorganic medium includes quartz sand, bead and sand grains by 1:2:1 mixture, medium
Partial size is 4mm.
The present embodiment step (4) active carbon is cell culture grade active carbon.
The present embodiment step (6) described additive includes Zn, Mn, Co and Ni, content Zn:4g/L, Mn:4g/L, Co:
1.5g/L, Ni:1.5g/L.
Embodiment 3
The method for present embodiments providing a kind of anaerobic digestion fiber and waste grease two-stage anaerobic fermentation production biogas, it is described
Method includes the following steps:
(1) anaerobic digestion fiber pre-processes: anaerobic digestion fiber pre-processes 2h, liquid using 4% acetic acid of mass fraction at 121 DEG C
Gu than being 10mL/g；1h is pre-processed at 121 DEG C using 10% ammonium hydroxide of mass fraction after the completion of acetic acid pretreatment, will have been pre-processed
Anaerobic digestion fiber wash after it is dry；
(2) it prepares anaerobic fermentation bacterial: anaerobically digested sludge, fat acid decomposition bacterium being added in basal medium, as anaerobism
Fermenting microbe；The mass ratio of anaerobically digested sludge, fat acid decomposition bacterium and basal medium is 210:1:1000；
(3) it adds inorganic medium: adding nothing after the pretreated anaerobic digestion fiber of step (1) and anaerobic fermentation bacterial are mixed
Machine medium obtains mixture, and the mass ratio of the inorganic medium, pretreatment anaerobic digestion fiber and anaerobic fermentation bacterial is 11:
100:24；
(4) it adds active carbon: adding active carbon into mixture obtained by step (3) and be sufficiently mixed to obtain final mixture, institute
The mass ratio for stating active carbon and mixture is 1:8；
(5) it cleans methane-generating pit: cleaning methane-generating pit with clear water, and extract liquid in methane-generating pit out；
(6) it feeds intake: successively putting into final mixture, waste grease and additive described in step (4) into residents methane-generating pit
It is uniformly mixed, the mass percent of final mixture, waste grease and additive is 100:2.5:0.15；
(7) prepared by anaerobic environment: taking alcohol to be placed in large container, loses container in methane-generating pit after lighting；
(8) it seals: in alcohol burn, residents methane tank cover being closed, is sealed processing.
The present embodiment step (2) described basal medium are as follows: urea 1g/L, magnesium chloride 3g/L, potassium dihydrogen phosphate 2g/ L,
0.3 g/L of calcium chloride, ferrous sulfate 2 mg/L and olive oil 20g/ L.
The present embodiment step (2) fat acid decomposition bacterium is acid-producing Klebsiella bacterium and Burkholderia quality
Mixture than 1:1.
In the present embodiment step (2), the anaerobically digested sludge of waste water treatment system is taken, is added in basal medium, then
Add fat acid decomposition bacterium, 35 DEG C of culture domestications, as anaerobic fermentation bacterial.
The present embodiment step (3) described inorganic medium includes quartz sand, bead and sand grains by 3:2:1 scalemic thereof,
Media particle size is 5mm.
The present embodiment step (4) active carbon is cell culture grade active carbon.
The present embodiment step (6) described additive includes Zn, Mn, Co and Ni, content Zn:6g/L, Mn:6 g/L, Co:2
G/L, Ni:2 g/L.
Characteristics of producing methane in embodiment 1-3 is measured, measures in each embodiment natural pond in anaerobic fermentation process respectively
Average daily output tolerance, 40 days total gas productions and gas production rate variation in gas pond, and to be pre-processed without anaerobic digestion fiber
Scheme as a comparison case 1, a kind of anaerobic fermentation production is disclosed with the Chinese invention patent of Publication No. CN108546729A
The method of biogas as a comparison case 2, measurement result such as the following table 1 of characteristics of producing methane in each embodiment and comparative example 1 and comparative example 2
It is shown.
Table 1
As can be seen from the above table, the production gas peak period of embodiment 1, embodiment 2 and embodiment 3 is more pre- than not carrying out anaerobic digestion fiber
The comparative example 1 of processing shifts to an earlier date 3-4 days, shifts to an earlier date 9-10 days than comparative example 2；The most high yield gas of embodiment 1, embodiment 2 and embodiment 3
Rate is apparently higher than comparative example 1 and comparative example 2；The cumulative gas of embodiment 1, embodiment 2 and embodiment 3 is significantly higher than comparison
Example 1 and comparative example 2.Illustrate that anaerobic digestion fiber of the present invention is compared with the method that waste grease two-stage anaerobic fermentation produces biogas
The biogas production method of the prior art has with high gas production rate, bigger gas production, produces gas peak period and also obviously shifts to an earlier date.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring substantive content of the invention.
Claims (10)
1. the method that anaerobic digestion fiber and waste grease two-stage anaerobic fermentation produce biogas, which is characterized in that the method
Include the following steps:
(1) anaerobic digestion fiber pre-processes: anaerobic digestion fiber pre-processes 2h, liquid-solid ratio 10mL/ using acetic acid at 121 DEG C
g；1h is pre-processed at 121 DEG C using ammonium hydroxide after the completion of acetic acid pretreatment, will be done after the anaerobic digestion fiber wash pre-processed
It is dry；
(2) it prepares anaerobic fermentation bacterial: anaerobically digested sludge, fat acid decomposition bacterium being added in basal medium, as anaerobism
Fermenting microbe；The mass ratio of anaerobically digested sludge, fat acid decomposition bacterium and basal medium is 120-210:1:1000；
(3) it adds inorganic medium: adding nothing after the pretreated anaerobic digestion fiber of step (1) and anaerobic fermentation bacterial are mixed
Machine medium obtains mixture, and the mass ratio of the inorganic medium, pretreatment anaerobic digestion fiber and anaerobic fermentation bacterial is 4-11:
100:24；
(4) it adds active carbon: adding active carbon into mixture obtained by step (3) and be sufficiently mixed to obtain final mixture, institute
The mass ratio for stating active carbon and mixture is 1:5-8；
(5) it cleans methane-generating pit: cleaning methane-generating pit with clear water, and extract liquid in methane-generating pit out；
(6) it feeds intake: it is equal successively to put into final mixture described in step (4), waste grease and additive mixing into methane-generating pit
Even, the mass percent of final mixture, waste grease and additive is 100:1.8-2.5:0.1-0.15；
(7) prepared by anaerobic environment: taking combustible fuel, is placed in large container, loses container in methane-generating pit after lighting；
(8) it seals: in fuel combustion, methane tank cover being closed, is sealed processing.
2. the method that anaerobic digestion fiber and waste grease two-stage anaerobic fermentation produce biogas according to claim 1,
It is characterized in that: step (1) the quality of acetic acid score 4%, the ammonium hydroxide mass fraction 10%.
3. the method that anaerobic digestion fiber and waste grease two-stage anaerobic fermentation produce biogas according to claim 1,
It is characterized in that: step (2) described basal medium: urea 0.1-1g/L, magnesium chloride 2-3 g/L, potassium dihydrogen phosphate 1-2g/ L,
Calcium chloride 0.1-0.3g/L, ferrous sulfate 1-2mg/L and olive oil 2-20g/ L.
4. the method that anaerobic digestion fiber and waste grease two-stage anaerobic fermentation produce biogas according to claim 1,
Be characterized in that: step (2) the fat acid decomposition bacterium is acid-producing Klebsiella bacterium and Burkholderia mass ratio 1:1
Mixture.
5. the method that anaerobic digestion fiber and waste grease two-stage anaerobic fermentation produce biogas according to claim 1,
It is characterized in that: in step (2), taking the anaerobically digested sludge of waste water treatment system, be added in basal medium, then add fat
Degradation bacteria, 35 DEG C of culture domestications, as anaerobic fermentation bacterial.
6. the method that anaerobic digestion fiber and waste grease two-stage anaerobic fermentation produce biogas according to claim 1,
Be characterized in that: step (3) described inorganic medium includes quartz sand, bead and sand grains mixture in any proportion, media particle size
For 2-5mm.
7. the method that anaerobic digestion fiber and waste grease two-stage anaerobic fermentation produce biogas according to claim 1,
Be characterized in that: step (4) active carbon is cell culture grade active carbon.
8. the method that anaerobic digestion fiber and waste grease two-stage anaerobic fermentation produce biogas according to claim 1,
Be characterized in that: step (6) described additive includes Zn, Mn, Co and Ni, content Zn:3-6g/L, Mn:3-6g/L, Co:1-2g/
L, Ni:1-2g/L.
9. the method that anaerobic digestion fiber and waste grease two-stage anaerobic fermentation produce biogas according to claim 1,
Be characterized in that: step (6) methane-generating pit is residents methane-generating pit.
10. the method that anaerobic digestion fiber and waste grease two-stage anaerobic fermentation produce biogas according to claim 1,
Be characterized in that: step (7) combustible fuel is alcohol or kerosene.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111762885A (en) * | 2020-07-13 | 2020-10-13 | 同济大学 | Anaerobic digestion method based on self-sustaining air flotation screening |
| CN111808891A (en) * | 2020-07-16 | 2020-10-23 | 同济大学 | Method for producing biogas through anaerobic fermentation based on material composition |
-
2018
- 2018-11-22 CN CN201811397885.8A patent/CN109371097A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111762885A (en) * | 2020-07-13 | 2020-10-13 | 同济大学 | Anaerobic digestion method based on self-sustaining air flotation screening |
| CN111808891A (en) * | 2020-07-16 | 2020-10-23 | 同济大学 | Method for producing biogas through anaerobic fermentation based on material composition |
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