CN100376335C - Marsh gas production technology using kitchen residue, straw, stock and fowl dejecta and active mud as material - Google Patents
Marsh gas production technology using kitchen residue, straw, stock and fowl dejecta and active mud as material Download PDFInfo
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- CN100376335C CN100376335C CNB2005100944837A CN200510094483A CN100376335C CN 100376335 C CN100376335 C CN 100376335C CN B2005100944837 A CNB2005100944837 A CN B2005100944837A CN 200510094483 A CN200510094483 A CN 200510094483A CN 100376335 C CN100376335 C CN 100376335C
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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
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The invention discloses a technique for producing methane by using kitchen residues, straws, livestock and poultry feces and active sludge as raw materials, which relates to a key technique of methane production and a high solid methane fermentation reactor. The present invention gives the technical features of the key technique of methane production and a high solid methane fermentation reactor as follows: rigid anaerobic environment, adequate and good inoculum, necessary fermentation temperature, proper pH value, proper fermentation concentration and proper ratio of carbon to hydrogen in the fermentation process; the breeding speed safeguard of the fermenting bacteria in the fermenting substances; the killing of the toxic and harmful micro-organisms; the high solid reactor of stable operation. The environmental and social benefits of the integrated process of the present invention have significant academic meaning and practical value in realizing producing methane with low investment, low operation cost, high stability and clean production.
Description
Technical field
Utilize the biogas production method of organic wastes such as kitchen excess, stalk, feces of livestock and poultry and activated sludge, relate to biogas production key technology and high solid content biogas fermentation reactor technology for fermentation raw material.
Background technology
How safely, economic, stable production biogas is a global difficult problem always.Stalk is considered to important biogas fermentation raw material.For solving the technical problem of stalk fermentation, country has arranged the research topic of a series of application foundations and application technology, mainly the target of Xie Jueing is: can stalk aerogenesis, can produce how much biogas, how stalk and ight soil are used, how to carry out preliminary treatment, research of stalk discharging method and discharging facility or the like.The efficient breeding of " quaternity " of northern China exploitation is in conjunction with development model, i.e. solar energy greenhouse, and methane-generating pit, pigsty, the pigsty of lavatory and south exploitation, methane-generating pit, orchard " Trinity " pattern all once was considered to be fit to the effective model of China's national situation.
But the Wet technique floor space of traditional biogas fermentation is big, produces a large amount of secondary waste and waste water, wastewater treatment cost of investment and operating cost height; In addition, owing to the cycle rate that will improve garbage anaerobic fermentation makes that with regard to the existence temperature environment that must guarantee the anaerobic fermentation bacterium fermentation power consumption is high, a series of shortcomings such as cost height of processing dry, the scope and the region of having limited its adaptation.
At present, pair fermentation research of dry method biogas is all arranged at home and abroad.In the application of dry method anaerobic digestion in reality of Europe and America solid organic waste substances, all obtained development preferably.Aspect anaerobic digestion process, can be divided into one according to the progression that reacts and handle mutually and the two-phase processing.One technology of handling mutually is simple, can effectively handle the organic solid waste of total solids content 20%～40%.Because the high viscosity of substrate, substrate generally moves by the mode of laminar flow in reactor.Multiple technology that effectively can large-scale application has been arranged now, as Belgian Dranco technology, the Kompogas technology of Switzerland, the Valorga technology of France.At home, the anaerobic fermentation technology of developing a kind of dry type two-phase high temperature and middle temperature-separate pure technology is arranged also, be used for the high solid content fermentation of biogas.
Scale application facet at biogas; China Henan Nan Yang Alcohol Plant has set up the system that utilizes distillery waste water to produce biogas many years ago; adopt a plurality of large-scale anaerobic reaction-pots to produce biogas; biogas has been incorporated city natural gas pipe network into, has obtained preferably effect and has accumulated urbanization biogas application experience.Utilize stalk and kitchen excess to be raw material; the high solid content of scale is produced the energy supply that biogas is used for small town citizen; domestic also do not have a complete sum systematic research, and the biogas energy development at organic substances such as stalk and kitchen excess also has many aspects to need research and development.
Summary of the invention
The objective of the invention is to propose a kind of biogas production technology of utilizing organic wastes such as kitchen excess, stalk, feces of livestock and poultry and activated sludge for fermentation raw material; the present invention is a pattern with the samll cities and towns in the south of the River; with the representational SOLID ORGANIC rubbish of south rice stalk and samll cities and towns is main biogas production raw material; urbanization biogas production key element and large-scale production process are provided; set up urbanization biogas demonstration project, overcome the problem that traditional wet method biogas fermentation technology exists.
Main target of the present invention is:
(1) Yan Ge anaerobic environment, enough and good inoculum, necessary fermentation temperature, suitable acid-base value, suitable fermentation concentration and C/Hratio;
(2) the reproduction speed guarantee of zymophyte in fermentate;
(3) the poisonous and harmful microbial bacteria kills;
(4) stable high solid content marsh gas reactor.
Technical scheme of the present invention:
Adopt two parallel high solid content marsh gas reactors, with city domestic sewage treatment plant anaerobically digested sludge as kind of a mud, in reactor, raw material kitchen excess, stalk, feces of livestock and poultry, activated sludge and kind mud are mixed, the quality proportioning of kitchen excess, stalk, feces of livestock and poultry and activated sludge is 1: 1: 1: 1, planting the mud consumption is 25% of material quantity, warm 33-37 ℃ anaerobic fermentation during northern area is taked, southern area is taked middle high temperature 33-55 ℃ anaerobic fermentation, the pH value maintains 7.0, humidity is controlled at 90%-100%, detects organic acid, CH every day
4And CO
2Content, CH in the biogas that produces
4Stable content is 50%-70%, CO
2When content was 30%-50%, reactor reached normal operating condition.
Beneficial effect of the present invention:
(1) but can directly handle solid fermented organics such as agricultural crop straw and municipal refuse, saved the preliminary treatment cost more than 50% than conventional wet;
(2) influence of interference-free material of fermentation such as plastics, wooden unit, sandstone etc. need not to spend manpower and equipment it is detected before fermentation;
(3) biogas quality height (sulfur content is lower than wet method biogas, at 50-300ppm, can directly use for methane fuelled engine without gas washing), fermentate gas efficiency height (25%-35%);
(4) the charging discharging can be used general engineering machinery such as loading machine, device efficiency height, highly versatile;
(5) water consumption reduces more than 80% compared with wet method, does not almost have sewage discharge;
(6) the fermentation residue does not have the natural pond liquid of wet-fermentation, and without processed, the fermentation residue is through simply sieving and the compost of short time promptly can be used as garden fertilizer or crops fertilizer, thereby storage and post processing expense are low, are worth high.
(7) initial investment of high solid content marsh gas fermentation process, operation cost and Environmental costs are all far below Wet technique (reducing more than the 30%-40%).
The present invention has important academic significance and more practical value to low investment, low operating cost, high stability and the cleaner production that realizes biogas production.Compared with wet method biogas fermentation technology, high solid content biogas fermentation technology has improved the production scale of biogas, has reduced the infrastructure construction input; Can consume agricultural crop straw, city rubbish from cooking in a large number these are difficult to the raw material that utilizes in wet method, and sweat institute calorific requirement reduces more than 50%.About can producing contains the biogas of methane more than 60% in agricultural crop straw per ton or the yeast phase of city rubbish from cooking about 40 days about 150 cubic metres, and can produce a large amount of high-quality green manure.
Urbanization is the trend of Chinese society economic development, and a large amount of life and the agricultural wastes of the annual generation in cities and towns and the area of agricultural production on every side thereof are as kitchen excess, stalk, ight soil and organic sludge etc.These discarded objects are concentrated fermentation methane production, and biogas is used for town dweller's daily life, reduces the demand to non-renewable coal or natural gas; It is fertile that the natural pond slag becomes green efficiently farming, also helps the growth of crops behind the field; Agricultural crop straw is used further to the production of biogas, forms a benign cycle, helps to have solved the handling problems of stalk and town dweller's organic domestic waste.Obtained the energy---biogas simultaneously, it is fertile to have obtained efficient farming, is one and meets ecological process.
The specific embodiment
(1) two parallel high solid content marsh gas reactor (2-400m of design
2), with city domestic sewage treatment plant anaerobically digested sludge as kind of a mud, in reactor, raw material kitchen excess, stalk, feces of livestock and poultry, activated sludge and kind mud are mixed, the quality proportioning of kitchen excess, stalk, feces of livestock and poultry and activated sludge is 1: 1: 1: 1, planting the mud consumption is 25% of material quantity, warm 33-37 ℃ anaerobic fermentation during northern area is taked, southern area is taked middle high temperature 33-55 ℃ anaerobic fermentation, the pH value maintains 7.0, humidity is controlled at 90%-100%, detects organic acid, CH in the organic matter every day
4And CO
2Content, CH in the biogas that produces
4Stable content is 50%-70%, CO
2When content was 30%-50%, reactor reached normal operating condition.
During normal the operation, the quality proportioning of kitchen excess, stalk, feces of livestock and poultry and activated sludge is 1: 1: 1: 1, and each raw material can have each fluctuation of 30% up and down, and the raw material water content requirement: the moisture content of kitchen excess is 80%-90%; The rice straw moisture content that soaked water of storage is 80%-85%; The moisture content of feces of livestock and poultry is 80%-90%; The activated sludge moisture content 75%-80% of sewage treatment plant, the time of staying of material in reactor is 40-45 days.
Charging in per 2 days is a raw material with kitchen excess, stalk, feces of livestock and poultry and sludge sewage once, mixes by proportioning, and each inlet amount accounts for 2.5% of total stuff amount in the reactor, is passed in the high solid content marsh gas reactor by the feed arrangement mouth.
Reaction mass reaches the part by the self-poking arrangement in the reactor and mixes in high solid content marsh gas reactor, discharging in per 2 days once goes out the quantity of slag and be 2.5% of total stuff amount in the high solid content marsh gas reactor.
(2) the aerogenesis intensity of raw material is 0.2-0.4m
3(biogas)/m
3(reactor) sky.
(3) impurity is to the influence of reaction: the influence of ferment interference-free material such as plastics, wooden unit, sandstone etc. need not to spend manpower and equipment detects it before fermentation.
(4) just begun to start or reaction condition when bad (reduce as factor of created gase, acid accumulation causes pH to descend) at reactor, needed in reactor, to add that the obligate microbial inoculum---a kind of composite bacteria agent capable that contains methanogen and acid-producing bacteria etc., dosage is the 1%-10% of inlet amount.Described composite bacteria agent capable is " extraordinarily clear " obligate microbial inoculum of Jiangsu Boda Environmental Protection Co., Ltd.'s research and development.
Claims (5)
1. one kind is utilized the kitchen excess, stalk, feces of livestock and poultry and activated sludge are the biogas production method of fermentation raw material, it is characterized in that adopting two parallel high solid content marsh gas reactors, with city domestic sewage treatment plant anaerobically digested sludge as kind of a mud, in reactor with raw material kitchen excess, stalk, feces of livestock and poultry, activated sludge and kind mud mix, the kitchen excess, stalk, the quality proportioning of feces of livestock and poultry and activated sludge is 1: 1: 1: 1, planting the mud consumption is 25% of material quantity, warm 33-37 ℃ anaerobic fermentation during northern area is taked, southern area is taked middle high temperature 33-55 ℃ anaerobic fermentation, the pH value maintains 7.0, humidity is controlled at 90%-100%, detects organic acid every day, CH
4And CO
2Content, CH in the biogas that produces
4Stable content is 50%-70%, CO
2When content was 30%-50%, reactor reached normal operating condition;
During normal the operation, the quality proportioning of kitchen excess, stalk, feces of livestock and poultry and activated sludge is 1: 1: 1: 1, and each raw material has each fluctuation of 30% up and down, and the raw material water content requirement: the moisture content of kitchen excess is 80%-90%; The rice straw moisture content that soaked water of storage is 80%-85%; The moisture content of feces of livestock and poultry is 80%-90%; The activated sludge moisture content 75%-80% of sewage treatment plant, the time of staying of material in reactor is 40-45 days;
Charging in per 2 days is a raw material with kitchen excess, stalk, feces of livestock and poultry and sludge sewage once, mixes by proportioning, and each inlet amount accounts for 2.5% of total stuff amount in the reactor, is passed in the high solid content marsh gas reactor by the feed arrangement mouth;
Reaction mass reaches the part by the self-poking arrangement in the reactor and mixes in high solid content marsh gas reactor, discharging in per 2 days once goes out the quantity of slag and be 2.5% of total stuff amount in the high solid content marsh gas reactor.
2. biogas production method according to claim 1 is characterized in that high solid content marsh gas reactor volume is 2-400m
3
3. biogas production method according to claim 1, the aerogenesis intensity that it is characterized in that raw material is 0.2-0.4m
3Biogas/m
3The reactor sky.
4. biogas production method according to claim 1, it is characterized in that just having begun to start at reactor, or factor of created gase reduces or acid accumulation pH decline reaction condition when bad, need in reactor, to add the obligate microbial inoculum---contain the composite bacteria agent capable of acid-producing bacteria and methanogen, dosage is the 1%-10% of inlet amount, and described composite bacteria agent capable is " extraordinarily clear " obligate microbial inoculum of Jiangsu Boda Environmental Protection Co., Ltd.'s research and development.
5. biogas production method according to claim 1, the influence of it is characterized in that fermenting interference-free material plastics, wooden unit or sandstone need not to spend manpower and equipment detects it before fermentation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100944837A CN100376335C (en) | 2005-09-19 | 2005-09-19 | Marsh gas production technology using kitchen residue, straw, stock and fowl dejecta and active mud as material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100944837A CN100376335C (en) | 2005-09-19 | 2005-09-19 | Marsh gas production technology using kitchen residue, straw, stock and fowl dejecta and active mud as material |
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|---|---|
| CN1769220A CN1769220A (en) | 2006-05-10 |
| CN100376335C true CN100376335C (en) | 2008-03-26 |
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| CNB2005100944837A Expired - Fee Related CN100376335C (en) | 2005-09-19 | 2005-09-19 | Marsh gas production technology using kitchen residue, straw, stock and fowl dejecta and active mud as material |
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Families Citing this family (14)
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|---|---|---|---|---|
| CN100462315C (en) * | 2007-04-19 | 2009-02-18 | 浙江大学 | Rubbish comprehensive processing method adapted for village and small town |
| CN101358209B (en) * | 2008-08-25 | 2012-03-14 | 山东昌农生物能源开发有限公司 | Technique for preparing biogas by high-temperature anaerobic zymosis method using animal manure as raw material |
| CN102030456B (en) * | 2010-11-09 | 2012-07-04 | 同济大学 | Method for enhancing dry-process fermentation stability of sludge by adding kitchen waste |
| CN102219333A (en) * | 2011-02-23 | 2011-10-19 | 青岛天人环境股份有限公司 | Treatment method of manure waste generated in process of soaking manure in water in breeding farm |
| CN102757889A (en) * | 2011-04-27 | 2012-10-31 | 中国科学院青岛生物能源与过程研究所 | Method for producing methane from kitchen waste by two continuous anaerobic fermentation steps |
| CN102296091B (en) * | 2011-07-15 | 2013-10-23 | 陕西科技大学 | Method for preparing biogas from mixed plant straws and tanning sludge by dry-type anaerobic fermentation |
| CN102586334B (en) * | 2012-02-17 | 2013-10-16 | 江南大学 | Method for producing biogas from kitchen wastes by anaerobic fermentation |
| BR102012004750B1 (en) * | 2012-03-02 | 2021-09-08 | G-Meta Consultoria Participação e Serviços Ltda | ANAEROBIC PROCESS FOR THE PRODUCTION OF HIGH METHANE CONTENT BIOGAS BY BIODIGESTION OF ORGANIC WASTE AND RELATED ACCELERATION DEVICE |
| CN102559773B (en) * | 2012-03-06 | 2016-12-14 | 北京化工大学 | A kind of many raw materials mix the method that nearly synchronous fermentation synergism improves gas generation property |
| CN103451095B (en) * | 2013-09-05 | 2014-12-24 | 广西华淇节能环保工程有限公司 | Method for preparing marsh gas through straw, excrement and kitchen waste |
| CN108178473A (en) * | 2017-12-31 | 2018-06-19 | 江苏省港海环保科技集团有限公司 | A kind of environmental protection and energy saving processing method of municipal sludge |
| CN108990743B (en) * | 2018-07-17 | 2021-09-03 | 上海曹野农业发展有限公司 | Method for promoting crop growth in greenhouse in winter |
| CN111517606B (en) * | 2020-05-15 | 2021-07-27 | 同济大学 | Method for strengthening anaerobic co-digestion by utilizing acid fermentation of kitchen waste based on sludge isoelectric point |
| CN115213193A (en) * | 2022-06-07 | 2022-10-21 | 海南省智慧环境投资控股有限公司 | Distributed environment-friendly organic solid waste treatment method |
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| JPH11221541A (en) * | 1998-02-10 | 1999-08-17 | Kubota Corp | Method for recycling organic waste |
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Patent Citations (4)
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|---|---|---|---|---|
| JPH10448A (en) * | 1996-06-14 | 1998-01-06 | P F C:Kk | Treatment of organic waste |
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