CN101988076A - Method for producing biogas by garbage union fermentation - Google Patents
Method for producing biogas by garbage union fermentation Download PDFInfo
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- CN101988076A CN101988076A CN2009100128432A CN200910012843A CN101988076A CN 101988076 A CN101988076 A CN 101988076A CN 2009100128432 A CN2009100128432 A CN 2009100128432A CN 200910012843 A CN200910012843 A CN 200910012843A CN 101988076 A CN101988076 A CN 101988076A
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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
- Y02W10/20—Sludge processing
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Abstract
The invention relates to a method for treating organic wastes by anaerobic fermentation, in particular to a method for producing biogas by performing union fermentation on livestock and poultry excrements, sludge from urban sewage treatment factories and organic garbage. The method comprises the following steps of: smashing the organic garbage; putting the smashed organic garbage into a comprehensive pretreatment pool and mixing the smashed organic garbage with the sludge from the urban sewage treatment factories and the livestock and poultry excrements; diluting the mixed materials to form suspension containing 8 to 12 percent of solids by using the sewage in a farm; and ensuring that the pretreated material meets the material feeding requirement of an anaerobic reactor and enters the anaerobic reactor through a material feeding pump and a pipeline to perform fermentation. The biogas produced by fermentation can be directly used as fuel gases for warming or cooking in treatment factories and surrounding farmers after being purified; the residual part is used for generating electricity for self-use or surfing the Internet by an biogas generator unit; biogas liquid and biogas residues are used as organic fertilizers and returned to farm land. By the technique, the scale of construction of the biogas engineering becomes larger, and unit investment and running maintenance cost are reduced by over 10 percent. Compared with the output of biogas produced by separate fermentation of the sludge or livestock and poultry excrements, the output of the biogas produced by the method is obviously enhanced.
Description
Technical field
The present invention relates to a kind of method of anaerobically fermenting treatment of solid waste, specifically a kind of feces of livestock and poultry, urban wastewater treatment firm mud and organic waste combined ferment producing methane technology.
Background technology
Anaerobically fermenting is the organism of borrowing under the condition of anaerobic in amphimicrobe and the anerobe DeR device, and organism is converted into clean energy---biogas, the energy, environmental protection and benign ecological cycles can be combined, comprehensive benefit is remarkable, is one of main method of handling at present organic waste.For the processing of organic waste, China mainly adopts sanitary landfill, Unareobic fermentation to handle at present.The sanitary landfill method treating refuse is with a long history, technology maturation, but cost is higher.Unareobic fermentation is handled organic waste, make waste reductionization, innoxious in, can produce biogas, certain application has been arranged in recent years at home.Disposal for urban wastewater treatment firm mud, the municipal sewage plant of the existing only a few of China adopts the method for anaerobic digestion+digestion back mechanical sludge dewatering+ultimate disposal to dispose, because mud is through digestion process, sludge volume obviously reduces, and has reduced ultimate disposal (being generally landfill disposal) expense.But most municipal sewage plants all adopt gravity concentrate+natural mummification+ultimate disposal or gravity concentrates+method of mechanical dehydration+ultimate disposal disposes, because mud is without digestion process, sludge quantity is big, less stable, and ultimate disposal (being generally landfill disposal) expense is higher.Processing for feces of livestock and poultry mainly contains aerobic compost technology and anaerobically fermenting producing methane technology at present, anaerobically fermenting producing methane technology particularly, can when handling ight soil, handle other excrement dirt such as urine and wash-down water in the plant, biogas can be used as cooks a meal with combustion gas or generating online, liquid natural pond, natural pond slag can be used as also field of organic fertilizer, be the main method of handling livestock and poultry feces, a large amount of case histories has been arranged at home.
In recent years, fast development along with rural economy, show rural environmental pollution and ecological damage problem day outstanding, medium and small town sewage plant mud arbitrarily abandons in the countryside without effectively handling, culture factory's ight soil and the unprocessed random discharging of sewage, the rural garbage is not set up perfect collection and treatment mechanism and has been caused jointly that rural environment is dirty, unrest, poor, influences new countryside construction.Simultaneously, opportunities and challenges are provided for feces of livestock and poultry, urban wastewater treatment firm mud and organic waste combined ferment.All be rich in abundant organism in feces of livestock and poultry, urban wastewater treatment firm mud and the organic waste, all can be as the raw material of anaerobically fermenting producing methane, but because organic content is lower in the mud, factor of created gase is lower when fermenting separately, economic benefit is relatively poor, the easy hydrolysis of organic waste is easy to generate the acidifying phenomenon when fermenting separately, system's control difficulty.There have been a certain amount of report and engineering to use for the feces of livestock and poultry anaerobically fermenting.At present, for organic waste and urban wastewater treatment firm mud and organic waste and feces of livestock and poultry combined ferment, a small amount of report has been arranged both at home and abroad.The multiple waste combined ferment technology that people such as the domestic Ruan Wen of Southern Yangtze University power mention in its patent " is the biogas production technology of raw material with kitchen excess, stalk, feces of livestock and poultry and active sludge " (CN 1769220A) is the dry method fermentation, adding raw material is solid-state or semi-solid state, and presents first valve state behind the material input reactor.And this patent adopted is the wet-fermentation technology, both fermentation raw material was certain density suspension, present suspended state at inside reactor, can handle ight soil, urine and wash-down water in organic waste, urban wastewater treatment firm mud and the livestock and poultry farm simultaneously, no matter still see that from structure of reactor there is essential distinction in the two from raw material.
Summary of the invention
The objective of the invention is to propose a kind of method of producing biogas by anaerobically fermenting, the present invention is with the pattern of combined ferment producing methane, to feces of livestock and poultry, urban wastewater treatment firm mud and organic waste is that raw material carries out recycling treatment, the biogas that produces can be used as combustion gas, and remainder can be used for the personal or online of generating.Much bigger when the biogas engineering construction scale being fermented separately than feces of livestock and poultry, urban wastewater treatment firm mud and organic waste by this technology, specific investment and operation and maintenance cost reduce more than 10%, the biogas generation significantly improves (improving more than 25%) when fermenting separately than mud and feces of livestock and poultry, can avoid that the independent fermentation gas rate of mud is low, organic waste separately fermentation be easy to generate problems such as acidifying.
For achieving the above object, the technical solution used in the present invention:
Organic waste is carried out pulverization process, make its particle diameter less than 0.5cm, entering the comprehensive pretreatment pond then mixes with urban wastewater treatment firm mud and feces of livestock and poultry, and utilize that sewage is diluted to the suspension of solid content for 8-12% with mixed material in the plant, when sewage quantity in the plant was not enough, additional fresh water diluted; Material enters anaerobic reactor by fresh feed pump and pipeline and ferments after anaerobic reactor charging requirement is satisfied in pre-treatment; The biogas that fermentation produces can directly be used as combustion gas after purifying, for treatment plant and the heating of peripheral peasant household or the usefulness of cooking a meal, remainder is used by oneself or surfed the Net by marsh gas power generation unit generating treatment plant, and liquid natural pond, natural pond slag is as organic fertilizer field also; With the dirty anaerobically digested sludge of administering in biogas engineering anaerobic reactor or the sludge from wastewater treatment plant anaerobic reactor of livestock and poultry farm excrement is seed sludge, and the seed sludge amount is reactor design volumetrical 15-30%; Organic waste, sludge from wastewater treatment plant, feces of livestock and poultry quality proportioning are by 1: 1-3: 1-3, adjust according to refuse collection, mud and ight soil production during actual motion, but the organic waste proportion should be strict controlled in mass ratio≤1/3, to avoid the acidifying phenomenon; Feeding manner is an intermittent feeding, each charging 15-30 minute, every day, charging was 1-8 time, every day, inlet amount was reactor design volumetrical 1/25-1/15, and load and inlet amount are suitable substantially, and inventory accounts for reactor design volumetrical 80-90% in the reactor, material hydraulic detention time in reactor is 15-20 days, material pH maintains between the 6.8-7.2 in the reactor, and temperature of reaction is controlled at 35 ± 2 ℃, and stable post-reactor volume yield rate reaches 1.0m
3/ m
3.d more than, the methane gas stable content is at 55-70% in the generation biogas, and carbon dioxide content is stabilized between the 30-45%.
Urban wastewater treatment firm mud among the present invention refers to excess sludge, primary sludge or the mixing sludge that produces in urban wastewater treatment firm is disposed of sewage process, organic waste refers to the rubbish of biodegrade easily such as rubbish from cooking that resident living produces, food garbage, fruits and vegetables, and feces of livestock and poultry is meant one or more in pig manure, cow dung, sheep excrement, deer excrement and chicken manure, duck excrement, the goose excrement.
Beneficial effect of the present invention:
Much bigger when (1) engineering construction scale is fermented separately than organic waste, sludge from wastewater treatment plant and feces of livestock and poultry, specific investment and operation and maintenance cost reduce more than 10%;
(2) because very high by biodegradable composition easily in the organic waste, degradation effect of organic compound can reach 80-90% during anaerobically fermenting, degradation rate is much larger than town sewage plant mud and feces of livestock and poultry, therefore adding under the certain situation of weight of material, significantly improving when the biogas generation ferments separately than mud or feces of livestock and poultry during with the organic waste combined ferment (improving more than 25%);
(3) because the organic acid accumulation easily by biological degradation, very easily takes place organic wastes such as organic waste, particularly fruits and vegetables such as rubbish from cooking, food garbage, fruits and vegetables, cause the reactor acidifying in anaerobic fermentation process, influence aerogenesis.By with feces of livestock and poultry, urban wastewater treatment firm mud combined ferment, control organic waste add ratio at 1/3 (mass ratio), the acidifying phenomenon in the time of can effectively avoiding organic waste to ferment separately.
Description of drawings
Fig. 1 is feces of livestock and poultry of the present invention, urban wastewater treatment firm mud and organic waste combined ferment producing methane system chart.
Embodiment
Below detailed explanation only be to set forth ultimate principle of the present invention, be not to be restrictive condition, can suitably adjust according to the concrete component of raw material in the actual application.
Embodiment 1
Rely on certain livestock and poultry cultivation large-sized biogas engineering, main body anaerobic reaction tank volume is 2000m
3, be seed sludge with the anaerobically digested sludge in the sludge from wastewater treatment plant digestion anaerobic reactor, the seed sludge amount is a reactor design volumetrical 20%.Organic waste, urban wastewater treatment firm mud, feces of livestock and poultry (cow dung) quality proportioning were according to design in 1: 3: 3.Organic waste after pulverization process particle diameter less than 0.5cm.Solid concentration is 10% in the charging, feeding manner is an intermittent feeding, charging every day 4 times, each charging 15 minutes, every day, inlet amount was a reactor design volumetrical 1/25, load and inlet amount are suitable, inventory accounts for reactor design volumetrical 90% in the reactor, material hydraulic detention time in reactor is 20 days, and material pH is controlled between the 6.8-7.2 in the reactor, and temperature of reaction is controlled at 35 ± 2 ℃.Debugging through 50 days, the methane gas stable content is at 55-70% in the biogas of stable back, and carbon dioxide content is stabilized between the 30-45%, and the reactor volume factor of created gase is 1.0-1.4m
3/ m
3.d, the average volume factor of created gase reaches 1.25m
3/ m
3.d.
Embodiment 2
Design an anaerobic reactor, reactor volume is 20L.With the dirty anaerobically digested sludge of administering in the biogas engineering anaerobic reactor of livestock and poultry farm excrement is seed sludge, and the seed sludge amount is a reactor design volumetrical 20%.Organic waste, sludge from wastewater treatment plant, feces of livestock and poultry (cow dung) quality proportioning were according to design in 1: 3: 3.Organic waste after pulverization process particle diameter less than 0.1cm.Solid concentration is 12% in the charging, and feeding manner is an intermittent feeding, charging every day 1 time, each charging 1L.Load and inlet amount are suitable, and inventory accounts for reactor design volumetrical 90% in the reactor.Material pH is controlled between the 6.9-7.2 in the reactor, and temperature of reaction is controlled at 35 ± 1 ℃.The methane gas stable content is at 60-70% in the biogas of stable back, and carbon dioxide content is stabilized between the 30-40%, and material hydraulic detention time in reactor is 20 days, and the reactor volume factor of created gase is 1.2-1.6m
3/ m
3.d, the average volume factor of created gase reaches 1.4m
3/ m
3.d.
Claims (4)
1. rubbish combined ferment producing methane method is characterized in that:
Organic waste is carried out pulverization process, entering the comprehensive pretreatment pond then mixes with urban wastewater treatment firm mud and feces of livestock and poultry, and utilize in the plant sewage or clear water that mixed material is diluted to the suspension of solid content for 8-12%, promptly when sewage quantity in the plant was not enough, additional fresh water diluted; Above-mentioned suspension material enters anaerobic reactor by fresh feed pump and pipeline and ferments after anaerobic reactor charging requirement has been satisfied in pre-treatment, the biogas that fermentation produces can directly be used as combustion gas after purifying, for treatment plant and the heating of peripheral peasant household or the usefulness of cooking a meal, remainder is personal or online by marsh gas power generation unit generating treatment plant, and liquid natural pond, natural pond slag is as organic fertilizer field also;
With the dirty anaerobically digested sludge of administering in biogas engineering anaerobic reactor or the sludge from wastewater treatment plant anaerobic reactor of livestock and poultry farm excrement is seed sludge, and the seed sludge amount is reactor design volumetrical 15-30%;
Organic waste, sludge from wastewater treatment plant, feces of livestock and poultry quality proportioning are by 1: 1-3: 1-3, adjust according to refuse collection, mud and ight soil production during actual motion, but the organic waste proportion should be strict controlled in mass ratio≤1/3, to avoid the acidifying phenomenon;
Feeding manner is an intermittent feeding, each charging 15-30 minute, every day, charging was 1-8 time, every day, inlet amount was reactor design volumetrical 1/25-1/15, and load and inlet amount are suitable substantially, and inventory accounts for reactor design volumetrical 80-90% in the reactor, material hydraulic detention time in reactor is 15-20 days, material pH maintains between the 6.8-7.2 in the reactor, and temperature of reaction is controlled at 35 ± 2 ℃, and stable post-reactor volume yield rate reaches 1.0m
3/ m
3.d more than, the methane gas stable content is at 55-70% in the generation biogas, and carbon dioxide content is stabilized between the 30-45%.
2. according to the described method of claim 1, it is characterized in that: described organic waste is meant the septic fruits and vegetables that produce in the rubbish from cooking that produces in the resident living process and/or the agricultural production process.
3. according to the described method of claim 1, it is characterized in that: described sludge from wastewater treatment plant is meant excess sludge, primary sludge and/or the mixing sludge that urban wastewater treatment firm is disposed of sewage and produced in the process.
4. according to the described method of claim 1, it is characterized in that: described feces of livestock and poultry is meant one or more in pig manure, cow dung, sheep excrement, deer excrement and chicken manure, duck excrement, the goose excrement.
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| CN2009100128432A CN101988076A (en) | 2009-07-31 | 2009-07-31 | Method for producing biogas by garbage union fermentation |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102873080A (en) * | 2012-10-08 | 2013-01-16 | 上海电力学院 | Kitchen food waste centralized treatment system |
| CN102964044A (en) * | 2012-12-12 | 2013-03-13 | 北京化工大学 | Method for improving performance of methane produced by anaerobic reaction on manure |
| CN103088072A (en) * | 2013-01-31 | 2013-05-08 | 东莞市粤源包装有限公司 | Method for automatic treatment of organic household garbage |
| CN103451095A (en) * | 2013-09-05 | 2013-12-18 | 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 |
| CN104498578A (en) * | 2014-11-29 | 2015-04-08 | 山东省农业科学院农业资源与环境研究所 | Method suitable for anaerobic dry fermentation of organic household refuses in fishing villages in Jiaodong peninsular region |
| CN104651411A (en) * | 2013-11-18 | 2015-05-27 | 李进凯 | Method for producing methane from domestic garbage |
| CN105063096A (en) * | 2015-09-14 | 2015-11-18 | 黑龙江中科瑞合环保技术服务有限公司 | Method for quickly producing methane through anaerobic fermentation of kitchen waste at normal temperature |
| CN105983566A (en) * | 2015-03-03 | 2016-10-05 | 四川未来城镇建设管理股份有限公司 | Domestic sewage and rubbish, dining-room kitchen waste and riverway sludge integrated treatment process |
| CN106242216A (en) * | 2016-08-12 | 2016-12-21 | 同济大学 | A kind of method utilizing cattle manure quickly to start mud superhigh temperature anaerobic digester system |
| CN106755124A (en) * | 2016-12-20 | 2017-05-31 | 天津凯英科技发展股份有限公司 | Consumer waste infiltration liquid cooperates with anaerobic treatment method with general solid waste |
| CN107142197A (en) * | 2017-06-23 | 2017-09-08 | 四川省天惠能源科技有限公司 | A kind of biogas microalgae joint ecological treatment system and its application |
| CN109136074A (en) * | 2018-10-09 | 2019-01-04 | 厦门市联谊吉源环保工程有限公司 | More material combined ferment dry anaerobic digestion complexes and processing method |
| CN109205971A (en) * | 2018-08-06 | 2019-01-15 | 北京开元信节能科技有限公司 | A kind of livestock and poultry feces integrated treatment and the device utilized |
| CN109628500A (en) * | 2019-01-17 | 2019-04-16 | 黑龙江新天地能源开发有限公司 | 3H efficient anaerobic fermentation solid organic castoff producing methane technology |
| CN110436711A (en) * | 2019-08-15 | 2019-11-12 | 北京云水浩瑞环境科技有限公司 | Handle the system and method for small towns rubbish and sewage |
| CN115011638A (en) * | 2022-01-05 | 2022-09-06 | 九江学院 | Rural living source organic garbage, livestock and poultry manure and sludge integrated treatment technology |
-
2009
- 2009-07-31 CN CN2009100128432A patent/CN101988076A/en active Pending
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102873080A (en) * | 2012-10-08 | 2013-01-16 | 上海电力学院 | Kitchen food waste centralized treatment system |
| CN102964044A (en) * | 2012-12-12 | 2013-03-13 | 北京化工大学 | Method for improving performance of methane produced by anaerobic reaction on manure |
| CN103088072A (en) * | 2013-01-31 | 2013-05-08 | 东莞市粤源包装有限公司 | Method for automatic treatment of organic household garbage |
| CN103088072B (en) * | 2013-01-31 | 2014-12-03 | 广东源盛生态环保科技有限公司 | Method for automatic treatment of organic household garbage |
| CN103451095A (en) * | 2013-09-05 | 2013-12-18 | 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 |
| 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 |
| CN104651411A (en) * | 2013-11-18 | 2015-05-27 | 李进凯 | Method for producing methane from domestic garbage |
| CN104498578A (en) * | 2014-11-29 | 2015-04-08 | 山东省农业科学院农业资源与环境研究所 | Method suitable for anaerobic dry fermentation of organic household refuses in fishing villages in Jiaodong peninsular region |
| CN105983566A (en) * | 2015-03-03 | 2016-10-05 | 四川未来城镇建设管理股份有限公司 | Domestic sewage and rubbish, dining-room kitchen waste and riverway sludge integrated treatment process |
| CN105063096A (en) * | 2015-09-14 | 2015-11-18 | 黑龙江中科瑞合环保技术服务有限公司 | Method for quickly producing methane through anaerobic fermentation of kitchen waste at normal temperature |
| CN106242216A (en) * | 2016-08-12 | 2016-12-21 | 同济大学 | A kind of method utilizing cattle manure quickly to start mud superhigh temperature anaerobic digester system |
| CN106242216B (en) * | 2016-08-12 | 2019-03-01 | 同济大学 | A method of utilizing cow dung quick start sludge superhigh temperature anaerobic digester system |
| CN106755124A (en) * | 2016-12-20 | 2017-05-31 | 天津凯英科技发展股份有限公司 | Consumer waste infiltration liquid cooperates with anaerobic treatment method with general solid waste |
| CN106755124B (en) * | 2016-12-20 | 2020-06-12 | 天津凯英科技发展股份有限公司 | Domestic garbage leachate and common solid waste synergistic anaerobic treatment method |
| CN107142197A (en) * | 2017-06-23 | 2017-09-08 | 四川省天惠能源科技有限公司 | A kind of biogas microalgae joint ecological treatment system and its application |
| CN109205971A (en) * | 2018-08-06 | 2019-01-15 | 北京开元信节能科技有限公司 | A kind of livestock and poultry feces integrated treatment and the device utilized |
| CN109136074A (en) * | 2018-10-09 | 2019-01-04 | 厦门市联谊吉源环保工程有限公司 | More material combined ferment dry anaerobic digestion complexes and processing method |
| CN109136074B (en) * | 2018-10-09 | 2023-12-26 | 深圳双沃生态环境科技有限公司 | Multi-material combined fermentation dry anaerobic digestion complete device and treatment method |
| CN109628500A (en) * | 2019-01-17 | 2019-04-16 | 黑龙江新天地能源开发有限公司 | 3H efficient anaerobic fermentation solid organic castoff producing methane technology |
| CN110436711A (en) * | 2019-08-15 | 2019-11-12 | 北京云水浩瑞环境科技有限公司 | Handle the system and method for small towns rubbish and sewage |
| CN115011638A (en) * | 2022-01-05 | 2022-09-06 | 九江学院 | Rural living source organic garbage, livestock and poultry manure and sludge integrated treatment technology |
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Application publication date: 20110323 |