CN1461808A - Treatment technology and device of producing methane from straw-stalk type cultural solid waste material - Google Patents
Treatment technology and device of producing methane from straw-stalk type cultural solid waste material Download PDFInfo
- Publication number
- CN1461808A CN1461808A CN 02117886 CN02117886A CN1461808A CN 1461808 A CN1461808 A CN 1461808A CN 02117886 CN02117886 CN 02117886 CN 02117886 A CN02117886 A CN 02117886A CN 1461808 A CN1461808 A CN 1461808A
- Authority
- CN
- China
- Prior art keywords
- stalk
- solid waste
- straw
- lignin
- methane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
A process and equipment for preparing methane from straw-stalk type solid waste features that the efficient lignin-degradating bacteria are used for pretreating said solid waste to make lignin, cellulose, and semi-cellulose become the easily degradable substance, and conventional anaerobic biologic treating is then used. Its advantages are short transformation time and high transformation rate.
Description
Patent of the present invention relates to a kind of treatment process and device of producing methane from straw-stalk type cultural solid waste material.
As everyone knows, China is a large agricultural country, crop material is the byproduct of quantity maximum in the agriculture production, the annual production of China is more than 600,000,000 ton, this is huge Biological resources, see the utilization of stalk from the agricultural sustainable development angle, also very limited at present, a considerable amount of stalks are by on-site incineration or landfill.But the smog that burning produces meeting atmosphere pollution, State Bureau of Environmental Protection are clearly stipulated the mode that bans the use of burning and are handled stalk; The CO that landfill produces
2And CH
4All be that greenhouse gases also pollute the environment, thus the stalk class be treated as a problem that presses for solution.
The relevant direct anaerobically fermenting processing of stalk class solid waste aspect is used many both at home and abroad at present, also obtained certain achievement in research, particularly China still maintains the leading position in this field, but there are shortcomings such as fermentation period is long, processing rate is low in this method, the fermentation time of general stalk was at 45-90 days, and transformation efficiency is about 50%.
The subject matter of stalk class biological treatment is xylogen in the stalk, cellulosic degraded.Xylogen is the renewable resources that is only second to Mierocrystalline cellulose, hemicellulose on the earth as the organic polymer body of an enormous amount.Different with Mierocrystalline cellulose and hemicellulose in stalk is that xylogen is the material of a difficult for biological degradation, and xylogen is by propenylphenol, 4-propenyl-2-methoxyphenol, the body of three dimensional polymeric at random that the 5-syringol constitutes.Connecting key between each unit is complicated and stablize, and common oxydase is difficult to decompose, and xylogen is the limiting factor of nature Carbon cycle, and it surrounds Mierocrystalline cellulose makes Mierocrystalline cellulose bonding and fixed mutually, has brought difficulty to cellulosic comprehensive utilization.The chemical composition of homemade all kinds of stalks is as shown in the table: the chemical composition of homemade all kinds of stalks (%)
| Raw material | Moisture | Ash content | Xylogen | Poly-pentose | Nitric acid ethanol Mierocrystalline cellulose | Protein | Lipoid substance |
| Corn stalk | ?9.64 | ??4.66 | ??18.38 | ??21.58 | ??37.68 | ????6.33 | ??4.63 |
| Wheat straw | ?10.65 | ??6.04 | ??22.34 | ??25.56 | ??40.40 | ????2.98 | ??2.34 |
| Straw | ?- | ??13.39 | ??11.66 | ??22.45 | ??39.12 | ????3.16 | ??3.21 |
| Sorghum stalk | ?9.43 | ??4.76 | ??22.52 | ??44.40 | ??39.70 | ????1.81 | ??- |
But occurring in nature still exists unique enzyme system can lignin degrading, and microorganism plays significant feature in degradation process.At occurring in nature, can lignin degrading and the microorganism that produces enzyme only occupy the minority, the degraded fully of xylogen is the coefficient result of mould, bacterium and microflora in the soil, wherein mould plays significant feature.Mould is diffused in the wood materials by the effect of spore and mycelia, even enters in the cell and then secrete the cell walls that special enzyme is attacked lignocellulose.The special construction of xylogen is the topmost restrictive factor of restriction lignin biodegradation enzyme system, and this has just determined it must be different from the degeneration system of other biopolymer, and must be that born of the same parents are outer, non-single-minded, and is non-hydrolysis.The bacterium of lignin degrading comprises streptomycete (Streptomyces), Arthrobacter (Arthrobacter), micromonospora (Micromonospora) and Nocardia bacteria (Nocardia) etc. based on actinomycetes (Actinomycetes).In addition, also have anaerobic bacterium clostridium (Clostridiumxylanoyticum), pseudomonas (Pseudomonas), acinetobacter calcoaceticus (Acinetobactor), bacillus (Bacillus) and clostridium (Clostridium) etc.The mould of lignin degrading is divided into according to rotten type: whiterot fungi, brown rot fungus, soft-rot bacterium.The above two are Basidiomycetes (basidiomycetes), and soft corruption mould be Ascomycetes (Ascomycetes) or imperfect fungi (Fungi Imperfecti), the effect of its degraded saccharan is better than the lignin degradation effect, the hemicellulose of the mould main degraded cellulose of brown rot, therefore, white rot is mould is topmost lignin degradation microorganism.
Produce long shortcoming of methane fermentation time in order to overcome stalk anaerobic fermentation, the present invention utilizes after lignin-degrading bacteria destroys the lignin structure in the stalk biomass, carries out anaerobically fermenting again therefrom to reclaim methane gas.Promptly utilize the Black Liquor with Efficient Bacteria that selects to mix fungus strain and earlier stalk is carried out Biological Pretreatment, and then it is carried out anaerobically fermenting, its technology is shown in the legend 1: be the zymotechnique that feeds intake in batches, nitrogenous effluent in the equalizing tank (1) enters into aeration tank (2) through volume pump, stalk is also put into after crushed in the aeration tank (2) and is carried out Biological Pretreatment, pass through aerating apparatus (3) oxygen supply in the aeration tank, discharging is carried out the processing of anaerobic fermentation methane in anaerobic pond (4) after carrying out Biological Pretreatment 10-20 days, collect methane gas at the anaerobic pond top, after 15 days, the natural pond slag is by the anaerobic pond bottom discharge.The product methane rate of (aerobic+anaerobic treatment 25-35 days altogether) stalk can reach more than 50% at short notice, has greatly shortened the methanogenic time of anaerobically fermenting of stalk, has improved the transformation efficiency of stalk, thereby has realized the resource utilization of stalk class organic waste.
The core that stalk anaerobic fermentation provided by the invention produces the methane treatment process is to utilize the lignin-degrading bacteria composite microbial system that obtains from occurring in nature screening, separation, straw-like materials is carried out the aerobe pre-treatment, produce different enzyme systems by composite microbial system, in secretion lignin-degrading enzymes lignin degrading, also secrete the plain enzyme of some fibre, hemicellulase etc. the Mierocrystalline cellulose in the stalk, hemicellulose, protein and carbohydrate etc. are degraded.Because the xylogen of difficult degradation obtains decomposing, reduce the difficulty of follow-up anaerobic treatment by the stalk after the aerobic treatment effectively, shortened the methanogenic time of anaerobically fermenting, improved the product methane rate of follow-up anaerobically fermenting.Make efficient lignin-degrading bacteria become dominant bacteria (temperature is controlled between 20-30 ℃) in the reaction tank by the red-tape operati condition, pH is generally about 4.5-7.0.
Produce methane technology with existing stalk anaerobic fermentation and compare, the present invention has following advantage: (1) has shortened the methanogenic time of stalk anaerobic fermentation to a great extent; (2) improved the methanogenic transformation efficiency of stalk anaerobic fermentation.
Application example example 1: example 1 is one of embodiment of the present invention example, but this patent is not limited only to this.
The Black Liquor with Efficient Bacteria that the invention process process is adopted is mixed fungus strain by coming out through domestication back seed selection as sole carbon source with single xylogen.Its technology is shown in the legend 1: be the zymotechnique that feeds intake in batches, the nitrogenous effluent in the equalizing tank enters into the aeration tank through volume pump, and stalk is also put into after crushed and carried out Biological Pretreatment in the aeration tank, and the addition of stalk is 30g/L; The useful volume of aeration tank is organic transparent vessel of 12L, be provided with ceramic aeration head at the bottom of the aeration tank by the aerating apparatus oxygen supply, carrying out Biological Pretreatment (10 days, 28 ℃) the back discharging carries out anaerobic fermentation methane in the anaerobic pond and handles, collect methane gas at the anaerobic pond top, after 15 days, the natural pond slag is by the anaerobic pond bottom discharge.Stalk anaerobic fermentation produces the methane experimental result as shown in Figure 2 after Biological Pretreatment, and the methane conversion of stalk is respectively: contrast 0, and whiterot fungi 42.8%, composite microbial system 1 is 57.15%, composite microbial system 2 is 39%.Example 2: example 2 is one of embodiment of the present invention example, but this patent is not limited only to this.
The Black Liquor with Efficient Bacteria that the invention process process is adopted is mixed fungus strain by coming out through gradient screening back seed selection as carbon source with single xylogen.Its technology is shown in the legend 1: be the zymotechnique that feeds intake in batches, the nitrogenous effluent in the equalizing tank enters into the aeration tank through volume pump, and stalk is also put into after crushed and carried out Biological Pretreatment in the aeration tank, and the addition of stalk is 30g/L; The useful volume of aeration tank is organic transparent vessel of 12L, be provided with ceramic aeration head at the bottom of the aeration tank by the aerating apparatus oxygen supply, carrying out Biological Pretreatment (20 days, 25-35 ℃) the back discharging carries out anaerobic fermentation methane in the anaerobic pond and handles, collect methane gas at the anaerobic pond top, after 15 days, the natural pond slag is by the anaerobic pond bottom discharge.Stalk anaerobic fermentation produces the methane experimental result as shown in Figure 3 after handling 35 days, and the methane conversion of stalk is respectively: contrast 8%, and whiterot fungi 56.46%, composite microbial system 3 is 64.74%, composite microbial system 4 is 44.46%.
Claims (3)
1. for stalk biomass, after under aerobic condition, carrying out a biological disposal upon, under anaerobic ferment and make the stalk biomass treatment process of methane gas.
2. in the method for claim the first record, the microorganism that aerobe utilized is the stalk biomass treatment process of lignin-degrading bacteria.
3. to have at least stalk biomass is carried out the aerobe reactor of aerobic treatment and the discharging in the aerobe reactor carried out the stalk biomass treatment unit of the anaerobic biological reactor of anaerobically fermenting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02117886 CN1461808A (en) | 2002-05-27 | 2002-05-27 | Treatment technology and device of producing methane from straw-stalk type cultural solid waste material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02117886 CN1461808A (en) | 2002-05-27 | 2002-05-27 | Treatment technology and device of producing methane from straw-stalk type cultural solid waste material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1461808A true CN1461808A (en) | 2003-12-17 |
Family
ID=29742412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02117886 Pending CN1461808A (en) | 2002-05-27 | 2002-05-27 | Treatment technology and device of producing methane from straw-stalk type cultural solid waste material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1461808A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100480392C (en) * | 2006-12-18 | 2009-04-22 | 同济大学 | Time-controllable greenhouse marsh gas fermentation process and system |
| CN100582063C (en) * | 2006-10-20 | 2010-01-20 | 中国农业大学 | Method and device for producing firedamp |
| CN1888073B (en) * | 2005-06-27 | 2010-04-07 | 北京合百意生态能源科技开发有限公司 | Marsh gas fermentation process with composite microbial prepn pre-treated stalk |
| CN102439160A (en) * | 2009-03-09 | 2012-05-02 | 诺维信公司 | Improved process for producing methane |
| CN101497833B (en) * | 2009-03-03 | 2012-05-30 | 安徽格义清洁能源技术有限公司 | Production process for producing biobase natural gas with coproduction of lignose and microcrystalline cellulose from bamboo processing wastes |
| CN101235349B (en) * | 2008-02-20 | 2012-07-04 | 南京大学 | Energy-saving straw anaerobic fermentation pretreatment device |
| CN103074134A (en) * | 2013-01-05 | 2013-05-01 | 上海杲晟实业有限公司 | Method for preparing biogas and carbonate by straw wastes |
-
2002
- 2002-05-27 CN CN 02117886 patent/CN1461808A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1888073B (en) * | 2005-06-27 | 2010-04-07 | 北京合百意生态能源科技开发有限公司 | Marsh gas fermentation process with composite microbial prepn pre-treated stalk |
| CN100582063C (en) * | 2006-10-20 | 2010-01-20 | 中国农业大学 | Method and device for producing firedamp |
| CN100480392C (en) * | 2006-12-18 | 2009-04-22 | 同济大学 | Time-controllable greenhouse marsh gas fermentation process and system |
| CN101235349B (en) * | 2008-02-20 | 2012-07-04 | 南京大学 | Energy-saving straw anaerobic fermentation pretreatment device |
| CN101497833B (en) * | 2009-03-03 | 2012-05-30 | 安徽格义清洁能源技术有限公司 | Production process for producing biobase natural gas with coproduction of lignose and microcrystalline cellulose from bamboo processing wastes |
| CN102439160A (en) * | 2009-03-09 | 2012-05-02 | 诺维信公司 | Improved process for producing methane |
| CN103074134A (en) * | 2013-01-05 | 2013-05-01 | 上海杲晟实业有限公司 | Method for preparing biogas and carbonate by straw wastes |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Mshandete et al. | Enhancement of anaerobic batch digestion of sisal pulp waste by mesophilic aerobic pre-treatment | |
| CN101759467B (en) | Rural solid waste mixed aerobic composting method | |
| CN101475926B (en) | Anaerobic cellulose-degrading methane producing composite bacterium | |
| CN113582736B (en) | Compost preparation method adopting enzyme-bacterium composite leavening agent for four-stage fermentation | |
| CN106148224B (en) | A kind of straw degradative acidification microbial inoculum and its manufacturing method | |
| CN102597252A (en) | Preparation method for bio-fuel materials and bio-chemicals | |
| CN106587559A (en) | Sludge anaerobic digestion method | |
| CN107937279A (en) | A kind of maize straw degraded acidifying microbial inoculum and preparation method thereof | |
| CN101481676B (en) | Preparation of composite bacteria | |
| CN1461808A (en) | Treatment technology and device of producing methane from straw-stalk type cultural solid waste material | |
| Rosenberg et al. | Lignin biodegradation and the production of ethyl alcohol from cellulose | |
| CN117343969A (en) | Method for producing lactic acid by utilizing pediococcus acidilactici ND-35 to carry out simultaneous saccharification and fermentation on kitchen waste | |
| CN1810734A (en) | Refuse composting process adding different decay promoting ferments separately and its decay promoting ferments | |
| Fu et al. | Study on biogas production from corn straw pretreated by compound microorganisms | |
| CN113980933B (en) | Complex enzyme preparation and method for treating wastewater and sludge by using complex enzyme | |
| CN112795597B (en) | Method for promoting straw rapid hydrolysis by domesticating paddy soil | |
| CN112479390A (en) | Compound for organic sewage treatment and preparation process thereof | |
| CN112522326A (en) | Method for producing biogas by treating dry straws through anaerobic dry fermentation and aerobic fermentation-anaerobic fermentation | |
| Azzam | Pretreatments of agroellulosic waste for microbial biomass production with a defined mixed culture | |
| CN112442460A (en) | Formula of composite microbial flora preparation for improving aerobic dynamic composting efficiency | |
| CN111186917A (en) | Method for treating residues of brewing wastewater by using microbial agent | |
| CN101088965B (en) | City refuse re-fermenting process | |
| CN113025497B (en) | Bacterial strain for efficiently degrading anthraquinone dyes and method for improving decoloring efficiency by using traditional Chinese medicine waste residues | |
| Verma et al. | Role of microorganisms in agricultural waste management | |
| JPH0731465A (en) | Method for biological treatment of woody waste |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |