CN107935344A - A kind of method for improving chicken manure producing methane through anaerobic fermentation characteristic - Google Patents
A kind of method for improving chicken manure producing methane through anaerobic fermentation characteristic Download PDFInfo
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- CN107935344A CN107935344A CN201711426741.6A CN201711426741A CN107935344A CN 107935344 A CN107935344 A CN 107935344A CN 201711426741 A CN201711426741 A CN 201711426741A CN 107935344 A CN107935344 A CN 107935344A
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- chicken manure
- anaerobic fermentation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
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Abstract
The method that the present invention discloses a kind of improvement chicken manure producing methane through anaerobic fermentation characteristic of field of agricultural production technologies, promotes chicken manure producing methane through anaerobic fermentation by regarding zeolite as outer source additive.The present invention realizes the Biogas using chicken manure efficient stable, its feature is that fermentation gas amount is big, aerogenesis is stablized, methane content is high in aerogenesis, solve the problems, such as to cause system easily to be collapsed because of ammonia inhibition in chicken manure anaerobic digestion process, provided for chicken manure energy, recycling and theoretical foundation and data support are provided.
Description
Technical field
The present invention relates to a kind of method of agricultural wastes processing technology field, and specifically one kind is by adding zeolite
Improve the method for chicken manure producing methane through anaerobic fermentation characteristic.
Background technology
World scaleization raises chickens quantity up to 20,000,000,000, and wherein China accounts for 23%.National Pollutant source investigation data show,
Ammonia nitrogen is respectively to have reached industrial source emission then with COD discharge capacity in the Sewage Water Emissions amount of livestock and poultry breeding industry
2.30 times and 3.23 times of amount.Developing rapidly for aquaculture provides guarantee for the stabilization supply of in the market animal products, but
Bring more serious environmental problem.Therefore, seek a kind of mode that feces of livestock and poultry is carried out to recycling to have become
The problem of China is in the urgent need to address.
The feces of livestock and poultry content of organic matter is high, decomposition rate is fast, nutrient enriches, but Chang Yinwei is produced in anaerobic fermentation process
Ammonia suppresses and causes fermentation to fail.The ammonia that the ammonia nitrogen of chicken manure middle and high concentration triggers suppresses to be the master for restricting anaerobic fermentation stable operation
Want one of reason.Therefore the stability and methane production for improving feces of livestock and poultry anaerobic fermentation become using animal wastes as raw material
Biogas engineering urgent problem to be solved.The ammonia nitrogen of high concentration can indirectly cause the change of methanogen intracellular ph value, and lead
Cause to maintain the energy increase needed for microbial cell normal activities so that some crucial enzymatic reactions are suppressed.It is free
Ammonia and ammonium ion are that total ammonia nitrogen is primarily present form in solution.Free ammonia can freely pass through cell membrane, have good ooze
Permeability, it is considered to be cause to produce the principal element that ammonia suppresses in anaerobic fermentation process.
Zeolite is a kind of cheap nonmetallic mineral, its skeleton structure is made of oxygen-octahedron and aluminum-oxygen tetrahedron, and
Connection mode between silicon (aluminium) oxygen tetrahedron is different, therefore middle forms many gaps and duct, its specific surface area zeolite structured
400-800m is reached2/ g, this special crystal structure cause zeolite have preferable ion exchangeable, adsorbing separation,
The physical and chemical performance such as heat endurance and acid resistance.
Through retrieving,《Regenerative resource》What the 6th phase Li Yi in 2016 et al. was delivered《Zeolite to swine waste marsh gas fermentation character and
The influence of heavy metal Zn in biogas residue, biogas slurry》, wherein using pig manure as fermentation raw material, tested using anaerobic fermentation technology.As a result
Show：Adding zeolite influences less biogas fermentation gas production, methane content, and addition zeolite advantageously reduces the life of heavy metal Zn
Thing validity, therefore, it is suggested that add heavy metal deactivator in anaerobic fermentation process, is reduced heavy metal-polluted behind the Fei Hui fields of natural pond with this
The risk of dye.
Further in retrieval, do not find and the same or similar document report of present subject matter.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of method for improving chicken manure producing methane through anaerobic fermentation characteristic, solve
The problem of chicken manure anaerobic fermentation system is easily collapsed, improves total gas production, methane content, improves aerogenesis quality.
The present invention is realized by following technical solution：
A kind of method for improving chicken manure producing methane through anaerobic fermentation characteristic of the present invention, it by zeolite by being added to chicken
Carry out producing methane through anaerobic fermentation in excrement.
Preferably, the chicken manure refers to：The chicken manure after being more than 1cm impurity is rejected in sieving.
Preferably, the zeolite refers to：Specific surface area is more than 13.71m2·g-1, hardness is in 3~4, principal component Na
(AlSi5O12)·4H2The zeolite of O.
Preferably, it is zeolite deionized water rinsing is multiple, rinse and be placed on processing 20-28 in 100-110 DEG C of baking oven
Hour.
Preferably, the anaerobic fermentation refers to：Zeolite and chicken manure are placed in round, chicken manure is with connecing in round
Kind thing VS ratios are 1:2, initial pH value is adjusted to 7.5~7.8, is placed in water bath with thermostatic control shaking table and is carried out anaerobic fermentation.
Preferably, the additive amount of the zeolite is the 2.5%~10% of anaerobic fermentation system, is herein volume fraction.
Preferably, the adjusting initial pH value refers to 7.5~7.8：Initial pH value is adjusted to 7.5~7.8 with HCL.
Preferably, the HCL can use the HCL of 3mol/L.
Preferably, the water bath with thermostatic control refers to：Under 32-38 DEG C of isoperibol, hunting speed is 90-110 revs/min.
Preferably, the anaerobic fermentation time is 40-50 days.
Preferably, the inoculum is activated sludge, is derived from the fermentation residues of the bionethanation system of normal fermentation.
Biogas characteristic is improved by adding zeolite in chicken manure anaerobic fermentation system in the present invention, it is special that zeolite has
Monoclinic crystal structure, the abundant gap and duct formed in its structure make it be less than the molecule (NH in its aperture for particle diameter4 +) have compared with
High selection characterization of adsorption, the Al put in addition on zeolite activity position3+、Ca2+And Mg2+One has been replaced etc. divalence or Tricationic
NH in part solution4 +With H+Deng monovalent cation, certain adjustment effect is played to the pH value of zymotic fluid, while zeolite has
There is larger specific surface area, abundant gap provides advantageous environment for the enrichment and breeding of the microorganisms such as methanogen.
Therefore addition zeolite can effectively alleviate the ammonia suppression in chicken manure anaerobic fermentation process, improve the stability of fermentation system, promote
Into aerogenesis.In terms of chicken manure fermenting ammonia suppression problem is alleviated, the methods of using inoculum domestication, ammonia aeration method at present more, these
Method regulating cycle is grown, and equipment requirement is higher, and adds that zeolite operation is relatively easy, and controllability is strong, and easily separated recycling.
Compared with prior art, the invention has the advantages that：
The present invention improves chicken manure energy, recycling and innoxious efficiency, and the chicken manure of composing environment pollution is converted
Into a kind of high-quality considerable clean energy resource.Zeolite is a kind of cheap natural minerals, and has good characterization of adsorption.
The present invention adds zeolite compared with directly carrying out biogas fermentation using chicken manure in chicken manure fermenting system, improves total
Gas production, methane content, aerogenesis are more stablized, and solve the problems, such as that chicken manure fermenting efficiency is low.
The present invention draws the chicken manure for adding zeolite in anaerobic fermentation process is carried out by verification experimental verification, the pH of fermentation system
All the time between maintaining 7~8, there is good adjustment effect to zymotic fluid stability and acidifying.
Embodiment
With reference to specific embodiment, the present invention is described in detail.Following embodiments will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
Existing device can be used to carry out in following embodiments of the present invention, wherein used installation for fermenting structure is such as
Under：
Installation for fermenting is made of the part such as fermentation flask, scale gas collecting tube, water bath with thermostatic control shaking table, its fermentation flask is 500mL's
Triangular flask, is sealed with sizeable silica gel plug on bottle, using suitable card punch on silica gel plug drill two holes, connect respectively
Two sizeable hard plastic sebific ducts, one is connected with the conduit of scale gas collecting tube, and another is used as probe tube.Scale gas collecting tube
For the cylindrical tubes of 2000mL, scale gas collecting tube is placed in sink, and lower curtate leaves catheter interface, and interface is located at below liquid level, is led to
Conduit is crossed to be connected fermentation flask with scale gas collecting tube.After biogas is produced in fermentation flask, gas enters scale gas collection by conduit
Guan Zhong, extrudes liquid and enters rhone, pass through the scale of Measurement scales gas collecting tube, you can calculate the volume of aerogenesis.
Certainly, can also be the device of other structures in other embodiments, above device is only one of which embodiment
Situation.
Embodiment 1
The present embodiment provides a kind of method for improving chicken manure producing methane through anaerobic fermentation characteristic, specific implementation step are as follows：
(1) chicken manure is sieved, rejects the impurity that particle diameter is more than 1cm；
(2) VS (volatile solid) of chicken manure raw material obtained by step (1) is measured, it is 13.44% to obtain chicken manure VS, sets hair
Chicken manure and the VS ratios of inoculation are 1 in ferment bottle:2, working volume 400mL；
Zeolite is sieved, size controlling is in 1~1.5mm.Zeolite is flushed three times with deionized water, flushing is placed on 105
DEG C baking oven in processing 24 it is small when.
Inoculum is activated sludge in the present embodiment, and it is normal by fermentation raw material of pig manure to be derived from Chongming Island of Shanghai City Gang Yan towns
The fermentation residues of the bionethanation system of fermentation, its total solids content mass fraction are 6.49%.
(3) zeolite after processing in step (2) is added to according to the volume fraction of 2.5%, 5% and 10% 3 gradient
In fermentation flask, and control group is set, is denoted as 0%.
(4) be sealed by fermentation device, and be placed on anaerobic fermentation 45 days in water bath with thermostatic control, temperature control at 35 DEG C, and
The daily morning and the lower period of the day from 11 a.m. to 1 p.m carry out vibration 25min, and mixing speed is 100 revs/min；
(5) gas sample is taken to detect containing for its methane within every 5 days come gas volume using the method for record gas collecting tube scale
Amount.
Above-described embodiment effect is：
In being 45 days in total aerogenesis time, the total yield air volume of three test groups of zeolite additive amount 2.5%, 5%, 10%
Respectively 2984mL, 3124mL, 3340mL, control group volume of gas are 2760mL, and the test group of highest gas production relatively compares
Group improves 21.01%.Methane content also has a more apparent raising, and wherein zeolite additive amount is 5% treatment group highest, highest first
Alkane content improves 7.12% up to 73.06%, compared with control group.
Embodiment 2
The present embodiment provides a kind of method for improving chicken manure producing methane through anaerobic fermentation characteristic, specific implementation step are as follows：
(1) chicken manure is sieved, rejects the impurity that particle diameter is more than 1cm；
(2) VS (volatile solid) of chicken manure raw material obtained by step (1) is measured, it is 13.44% to obtain chicken manure VS, sets hair
Chicken manure and the VS ratios of inoculation are 1 in ferment bottle:2, working volume 400mL；
Zeolite is sieved, sized zeolite particles control is more than 13.71m in 1~1.5mm, specific surface area2·g-1, hardness 3~4,
Principal component is Na (AlSi5O12)·4H2O.Zeolite is flushed three times with deionized water, rinses and is placed on place in 110 DEG C of baking oven
Manage 22 it is small when.
Inoculum is activated sludge in the present embodiment, and it is normal by fermentation raw material of pig manure to be derived from Chongming Island of Shanghai City Gang Yan towns
The fermentation residues of the bionethanation system of fermentation, its total solids content mass fraction are 6.49%.
(3) zeolite after processing in step (2) is added to according to the volume fraction of 2.5%, 5% and 10% 3 gradient
In fermentation flask, and control group is set, is denoted as 0%.
(4) be sealed by fermentation device, and be placed on anaerobic fermentation 50 days in water bath with thermostatic control, temperature control at 38 DEG C, and
The daily morning and the lower period of the day from 11 a.m. to 1 p.m carry out vibration 25min, and mixing speed is 110 revs/min；
(5) gas sample is taken to detect containing for its methane within every 5 days come gas volume using the method for record gas collecting tube scale
Amount.
Embodiment 3
The present embodiment provides a kind of method for improving chicken manure producing methane through anaerobic fermentation characteristic, specific implementation step are as follows：
(1) chicken manure is sieved, rejects the impurity that particle diameter is more than 1cm；
(2) VS (volatile solid) of chicken manure raw material obtained by step (1) is measured, it is 13.44% to obtain chicken manure VS, sets hair
Chicken manure and the VS ratios of inoculation are 1 in ferment bottle:2, working volume 400mL；
Zeolite is sieved, sized zeolite particles control is more than 13.71m in 1~1.5mm, specific surface area2·g-1, hardness 3~4,
Principal component is Na (AlSi5O12)·4H2O.Zeolite is flushed three times with deionized water, rinses and is placed on place in 100 DEG C of baking oven
Manage 20 it is small when.
Inoculum is activated sludge in the present embodiment, and it is normal by fermentation raw material of pig manure to be derived from Chongming Island of Shanghai City Gang Yan towns
The fermentation residues of the bionethanation system of fermentation, its total solids content mass fraction are 6.49%.
(3) zeolite after processing in step (2) is added to according to the volume fraction of 2.5%, 5% and 10% 3 gradient
In fermentation flask, and control group is set, is denoted as 0%.
(4) be sealed by fermentation device, and be placed on anaerobic fermentation 40 days in water bath with thermostatic control, temperature control at 32 DEG C, and
The daily morning and the lower period of the day from 11 a.m. to 1 p.m carry out vibration 25min, and mixing speed is 100 revs/min；
(5) gas sample is taken to detect containing for its methane within every 5 days come gas volume using the method for record gas collecting tube scale
Amount.
In above-described embodiment 2,3, zeolite is added in chicken manure fermenting system with directly carrying out biogas fermentation phase using chicken manure
Than improving total gas production, methane content, aerogenesis is more stablized, and solves the problems, such as that chicken manure fermenting efficiency is low, wherein zeolite adds
Dosage is 5% treatment group highest, and highest methane content improves more than 7% up to more than 70%, compared with control group.
To sum up, the present invention realizes the Biogas using chicken manure efficient stable, and its feature is that fermentation gas amount is big, aerogenesis
Stablize, methane content is high in aerogenesis, solves the problems, such as that system is easily collapsed in chicken manure anaerobic digestion process, be chicken manure energy,
Recycling, which provides, provides theoretical foundation and data support.
It should be pointed out that above is the preferred embodiment of the present invention, the present invention also has other implementations, such as
Proportionate relationship of change technological parameter therein, material etc. in scope of the present invention, this comes for those skilled in the art
Say and be easily achieved.
Although present disclosure is discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention's
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
- A kind of 1. method for improving chicken manure producing methane through anaerobic fermentation characteristic, it is characterised in that carried out after adding zeolite in chicken manure Anaerobic fermentation produces biogas.
- 2. the method according to claim 1 for improving chicken manure producing methane through anaerobic fermentation characteristic, it is characterized in that, the chicken manure is Refer to：The chicken manure after being more than 1cm impurity is rejected in sieving.
- 3. the method according to claim 1 for improving chicken manure producing methane through anaerobic fermentation characteristic, it is characterized in that, the zeolite is Refer to：1~1.5mm of particle diameter, specific surface area are more than 13.71m2·g-1, hardness in 3~4, principal component be Na (AlSi5O12)·4H2O Zeolite.
- 4. the method according to claim 3 for improving chicken manure producing methane through anaerobic fermentation characteristic, it is characterized in that, zeolite is spent Ionized water rinses multiple, rinses when being placed on that processing 20-28 is small in 100-110 DEG C of baking oven.
- 5. improve the method for chicken manure producing methane through anaerobic fermentation characteristic according to claim 1-4 any one of them, it is characterized in that, institute Anaerobic fermentation is stated to refer to：Zeolite and chicken manure are placed in round, chicken manure and inoculum VS ratios are 1 in round:2, adjust initial pH value to 7.5~7.8, it is placed in water bath with thermostatic control shaking table and carries out anaerobic fermentation.
- 6. the method according to claim 5 for improving chicken manure producing methane through anaerobic fermentation characteristic, it is characterized in that, at the beginning of the adjusting Beginning pH value refers to 7.5~7.8：Initial pH value is adjusted to 7.5~7.8 with HCL.
- 7. the method according to claim 5 for improving chicken manure producing methane through anaerobic fermentation characteristic, it is characterized in that, the zeolite Additive amount is the 2.5%~10% of anaerobic fermentation system, is herein volume fraction.
- 8. the method according to claim 5 for improving chicken manure producing methane through anaerobic fermentation characteristic, it is characterized in that, the thermostatted water Bath refers to：Under 32-38 DEG C of isoperibol, hunting speed is 90-110 revs/min.
- 9. the method according to claim 5 for improving chicken manure producing methane through anaerobic fermentation characteristic, it is characterized in that, the anaerobism hair The ferment time is 40-50 days.
- 10. the method according to claim 5 for improving chicken manure producing methane through anaerobic fermentation characteristic, it is characterized in that, the inoculation Thing is activated sludge, is derived from the fermentation residues of the bionethanation system of normal fermentation.
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Cited By (5)
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| CN110294581A (en) * | 2019-05-31 | 2019-10-01 | 广东广垦畜牧工程研究院有限公司 | A method of improving livestock and poultry feces anaerobic fermentation gas production effect using compound additive |
| CN110498586A (en) * | 2019-07-20 | 2019-11-26 | 上海交通大学 | A method of chicken manure producing methane through anaerobic fermentation characteristic is improved by addition charcoal |
| CN113264558A (en) * | 2021-04-15 | 2021-08-17 | 大连理工大学盘锦产业技术研究院 | Fe3O4Preparation method and application of/Silicate-1 molecular sieve nanocrystalline composite material |
| CN115502188A (en) * | 2022-10-19 | 2022-12-23 | 北京时代桃源环境科技股份有限公司 | Exogenous additive and application thereof in anaerobic digestion of kitchen waste |
| CN117265021A (en) * | 2023-09-08 | 2023-12-22 | 标发生态(山东)有限公司 | Treatment method for carrying out anaerobic digestion on high ammonia nitrogen waste through co-digestion |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110294581A (en) * | 2019-05-31 | 2019-10-01 | 广东广垦畜牧工程研究院有限公司 | A method of improving livestock and poultry feces anaerobic fermentation gas production effect using compound additive |
| CN110498586A (en) * | 2019-07-20 | 2019-11-26 | 上海交通大学 | A method of chicken manure producing methane through anaerobic fermentation characteristic is improved by addition charcoal |
| CN113264558A (en) * | 2021-04-15 | 2021-08-17 | 大连理工大学盘锦产业技术研究院 | Fe3O4Preparation method and application of/Silicate-1 molecular sieve nanocrystalline composite material |
| CN113264558B (en) * | 2021-04-15 | 2023-08-22 | 大连理工大学盘锦产业技术研究院 | Fe (Fe) 3 O 4 Preparation method and application of silica-1 molecular sieve nanocrystalline composite material |
| CN115502188A (en) * | 2022-10-19 | 2022-12-23 | 北京时代桃源环境科技股份有限公司 | Exogenous additive and application thereof in anaerobic digestion of kitchen waste |
| CN117265021A (en) * | 2023-09-08 | 2023-12-22 | 标发生态(山东)有限公司 | Treatment method for carrying out anaerobic digestion on high ammonia nitrogen waste through co-digestion |
| CN117265021B (en) * | 2023-09-08 | 2024-05-03 | 标发生态(山东)有限公司 | Treatment method for carrying out anaerobic digestion on high ammonia nitrogen waste through co-digestion |
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