CN102374543A - Anaerobic fermentation-incineration combined treatment method for organic wastes - Google Patents

Anaerobic fermentation-incineration combined treatment method for organic wastes Download PDF

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Publication number
CN102374543A
CN102374543A CN2011102249640A CN201110224964A CN102374543A CN 102374543 A CN102374543 A CN 102374543A CN 2011102249640 A CN2011102249640 A CN 2011102249640A CN 201110224964 A CN201110224964 A CN 201110224964A CN 102374543 A CN102374543 A CN 102374543A
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CN
China
Prior art keywords
anaerobic fermentation
natural pond
methane
slag
treatment
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CN2011102249640A
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Chinese (zh)
Inventor
陈泽智
龚惠娟
王巧玲
马莎莎
虞辉
吴未立
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南京大学
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Priority to CN2011102249640A priority Critical patent/CN102374543A/en
Publication of CN102374543A publication Critical patent/CN102374543A/en

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    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M21/00Bioreactors or fermenters specially adapted for specific uses
    • C12M21/04Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M21/00Bioreactors or fermenters specially adapted for specific uses
    • C12M21/12Bioreactors or fermenters specially adapted for specific uses for producing fuels or solvents
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M47/00Means for after-treatment of the produced biomass or of the fermentation or metabolic products, e.g. storage of biomass
    • C12M47/14Drying
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

The invention discloses an anaerobic fermentation-incineration combined treatment method for organic wastes. The anaerobic fermentation-incineration combined treatment method is characterized by comprising the following steps of: firstly, crushing the organic wastes, feeding the crushed organic wastes into a slurry mixing pool to be mixed with water or a methane solution to form a fermentation raw material, and feeding the fermentation raw material into an anaerobic fermentation tank for anaerobic fermentation treatment; secondly, performing solid-liquid separation treatment on residual slurry to form the methane solution and dehydrated methane slag; thirdly, making partial methane solution flow back to the slurry mixing pool, discharging surplus methane solution outwards to a sewage treatment facility; fourthly, feeding the dehydrated methane slag into a methane slag drying machine by taking methane generated by the anaerobic fermentation tank as fuel for heating, wherein the moisture content of the dried methane slag is made lower than 40%; fifthly, incinerating the dried methane slag subjected to drying treatment by using the methane collected from the anaerobic fermentation tank as auxiliary fuel for methane slag combustion; and sixthly, producing steam or hot water by a waste heat boiler by using high-temperature flue gas discharged from a methane slag incineration furnace, and supplying the steam or the hot water to the fermentation tank to serve as a hot source for heating or heat insulating. According to the invention, the anaerobic fermentation and the incineration treatment are organically combined, the advantages of the anaerobic fermentation and the incineration treatment are fully exerted, and the reduction, harmlessness and the recycling of rubbish are facilitated.

Description

Anaerobic fermentation-the burning combination treatment method of organic waste

Technical field

The present invention relates to a kind of waste disposal method, especially a kind of processing method of organic waste, specifically a kind of anaerobic fermentation-burning combination treatment method of organic waste.

Background technology

At present; With garbage, changing food waste, municipal sludge, market of farm produce rubbish, fowl and animal excrement is the organic waste of representative; Along with urban development, population increase; Its output rate of climb is very fast, how expeditiously these organic wastes to be carried out " minimizing, innoxious, resource " and handles, and becomes the common problem of paying close attention to of society.

For organic waste, adopt anaerobic fermentation can produce biogas, carry out energy and recycle, but the volume reduction rate of solid matter is not high, if the natural pond slag can not utilize, also can produce corresponding post processing problem.Adopt burning method can farthest realize the minimizing processing requirements of discarded object, but often moisture content is higher owing to organic waste, gives directly to burn and bring difficulty.

And be to adopt fermentation separately or the method for burning is carried out for the processing method commonly used of organic waste at present; These two kinds of methods respectively have pluses and minuses; Limit by technology institute, present do not have still that a kind of ability will be fermented and to burn the processing method of bringing into play the two advantage of combining available.

Summary of the invention

The objective of the invention is to invent a kind of anaerobic fermentation-burning combination treatment method of organic waste to the high-leveled and difficult problem of existing organic waste moisture content with direct burning.

Technical scheme of the present invention is:

A kind of anaerobic fermentation-burning combination treatment method of organic waste is characterized in that it may further comprise the steps:

At first, organic waste is carried out break process, its particle diameter is crushed to below the 30mm, get into size mixing Chi Yushui or natural pond liquid mixing formation fermentation raw material, get into anaerobic fermentation tank and carry out the anaerobic fermentation processing, and collect the biogas that is produced;

Secondly, the remaining slurry after the fermentation process that will be discharged by anaerobic fermentation tank is sent into plate and frame filter press and/or spiral centrifugal dehydrator and is carried out Separation of Solid and Liquid and handle, and forms the natural pond liquid and the natural pond slag that dewaters;

The 3rd, to control required natural pond liquid according to the natural pond liquid demand in the pond of sizing mixing and be back to the pond of sizing mixing, remainder drains into sewage treatment facility outward;

The 4th, make dehydration natural pond slag get into natural pond slag dryer, use fuel with the biogas that produces from anaerobic fermentation tank as heating; Can outside dryer, adopt the biogas hot-air stove to generate the hot air source that dryer is used; Also can biogas burner be set on dryer, in dryer, directly form hot air source, according to the difference of natural pond slag moisture content; Automatically regulate drying time and thermal source quantity delivered, make natural pond slag moisture content after the oven dry less than 40%;

The 5th, get into the incinerator burning through the mummification natural pond slag of drying after handling, burn as the natural pond slag with the biogas of collecting from anaerobic fermentation tank and use auxiliary fuel; When natural pond slag calorific value is on the low side, replenish the biogas amount in the incinerator automatically, to guarantee that ignition temperature is greater than more than 800 ℃;

The 6th, the high-temperature flue gas that natural pond slag incinerator is discharged adopts waste heat boiler to produce steam or hot water, supplies with fermentation tank as heating or insulation thermal source.

Described organic waste is one or more the combination in garbage, changing food waste, municipal sludge, market of farm produce rubbish and the fowl and animal excrement.

Described dryer is a roller dryer.

Described incinerator is recirculating fluidized bed, bubbling fluidized bed or grate incinerator.

Beneficial effect of the present invention:

The present invention has carried out organic combination with anaerobic fermentation and burning disposal, has given full play to advantage separately, can realize the processing target of " minimizing, innoxious, the resource " of rubbish better.

The present invention can realize that multipurpose is recycled and exploitation.

Description of drawings

Fig. 1 is a process flow diagram of the present invention.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the present invention is further described.

As shown in Figure 1.

A kind of anaerobic fermentation-burning combination treatment method of organic waste, it may further comprise the steps:

1. at first organic waste (is comprised that garbage, changing food waste, municipal sludge, market of farm produce rubbish, fowl and animal excrement etc. are the discarded object of key component with the labile organic compound; It can be the one-component in same source; Also can be the mixture of separate sources) carry out break process; Its particle diameter is crushed to below the 30mm, gets into size mixing Chi Yushui or natural pond liquid mixing formation fermentation raw material, get into anaerobic fermentation tank and carry out the anaerobic fermentation processing; Produce biogas, so that fuel is provided for follow-up dryer and incinerator; The biogas that produces can be collected, and also can make it be stored in the top of fermentation tank automatically;

2. the remaining slurry of anaerobic fermentation tank being discharged is sent into conventional equipment Separation of Solid and Liquid such as plate and frame filter press, spiral centrifugal dehydrator and is handled, and forms natural pond liquid and dehydration natural pond slag.

3. according to the demand of natural pond liquid in the pond of sizing mixing, control required natural pond liquid and be back to the pond of sizing mixing, simultaneously unnecessary slurries are drained into sewage treatment facility outward and handle the back discharge;

4. make dehydration natural pond slag get into natural pond slag dryer; Dryer can adopt roller dryer; Can use from the biogas of anaerobic fermentation tank generation and use fuel as heating; Can outside dryer, adopt the biogas hot-air stove to generate the hot air source that dryer is used, also can biogas burner be set on dryer, in dryer, directly form hot air source.According to the difference of natural pond slag moisture content, regulate drying time and thermal source quantity delivered automatically, make natural pond slag moisture content after the oven dry less than 40%;

5. through drying the mummification natural pond slag after handling; The burning of entering incinerator; Incinerator can be forms such as recirculating fluidized bed, bubbling fluidized bed, grate incinerator, burns as the natural pond slag with the biogas that produces from anaerobic fermentation tank and uses auxiliary fuel, when natural pond slag calorific value is on the low side; Automatically replenish the biogas amount in the incinerator, to guarantee that ignition temperature is greater than more than 800 ℃; ,

6. the high-temperature flue gas of natural pond slag incinerator discharge adopts waste heat boiler to produce steam or hot water, and the supply fermentation tank can be used as building materials use or direct landfill disposal as heating or being incubated thermal source and burn the slag that produces.

Whole process flow is as shown in Figure 1.

The present invention does not relate to all identical with the prior art prior art that maybe can adopt of part and realizes.

Claims (4)

1. anaerobic fermentation-the burning combination treatment method of an organic waste is characterized in that it may further comprise the steps:
At first, organic waste is carried out break process, its particle diameter is crushed to below the 30mm, get into size mixing Chi Yushui or natural pond liquid mixing formation fermentation raw material, get into anaerobic fermentation tank and carry out the anaerobic fermentation processing, and collect the biogas that is produced;
Secondly, the remaining slurry after the fermentation process that will be discharged by anaerobic fermentation tank is sent into plate and frame filter press and/or spiral centrifugal dehydrator and is carried out Separation of Solid and Liquid and handle, and forms the natural pond liquid and the natural pond slag that dewaters;
The 3rd, to control required natural pond liquid according to the natural pond liquid demand in the pond of sizing mixing and be back to the pond of sizing mixing, remainder drains into sewage treatment facility outward;
The 4th, make dehydration natural pond slag get into natural pond slag dryer, use fuel with the biogas that produces from anaerobic fermentation tank as heating; Can outside dryer, adopt the biogas hot-air stove to generate the hot air source that dryer is used; Also can biogas burner be set on dryer, in dryer, directly form hot air source, according to the difference of natural pond slag moisture content; Automatically regulate drying time and thermal source quantity delivered, make natural pond slag moisture content after the oven dry less than 40%;
The 5th, get into the incinerator burning through the mummification natural pond slag of drying after handling, burn as the natural pond slag with the biogas of collecting from anaerobic fermentation tank and use auxiliary fuel; When natural pond slag calorific value is on the low side, replenish the biogas amount in the incinerator automatically, to guarantee that ignition temperature is greater than more than 800 ℃;
The 6th, the high-temperature flue gas that natural pond slag incinerator is discharged adopts waste heat boiler to produce steam or hot water, supplies with fermentation tank as heating or insulation thermal source.
2. anaerobic fermentation-the burning combination treatment method of organic waste according to claim 1 is characterized in that described organic waste is one or more the combination in garbage, changing food waste, municipal sludge, market of farm produce rubbish and the fowl and animal excrement.
3. anaerobic fermentation-the burning combination treatment method of organic waste according to claim 1 is characterized in that described dryer is a roller dryer.
4. anaerobic fermentation-the burning combination treatment method of organic waste according to claim 1 is characterized in that described incinerator is recirculating fluidized bed, bubbling fluidized bed or grate incinerator.
CN2011102249640A 2011-08-08 2011-08-08 Anaerobic fermentation-incineration combined treatment method for organic wastes CN102374543A (en)

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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103100548A (en) * 2012-11-12 2013-05-15 黄陈超 Rapid fermentation technology of organic garbage
CN103103112A (en) * 2012-11-12 2013-05-15 黄陈超 Organic rubbish fermentation tank
CN103103111A (en) * 2012-11-12 2013-05-15 黄陈超 Hot air radiating device of fermentation tank
CN103361260A (en) * 2013-07-03 2013-10-23 沈阳航空航天大学 Cow dung high-solid anaerobic digestion and pyrolysis treatment integrated system
CN103691731A (en) * 2013-12-26 2014-04-02 北京中科通用能源环保有限责任公司 Kitchen waste disposal system
CN103952292A (en) * 2014-05-21 2014-07-30 杨合长 Preparation system of renewable energy sources
CN104030538A (en) * 2013-03-07 2014-09-10 周海云 Comprehensive biogas utilization system
CN104084417A (en) * 2014-07-16 2014-10-08 浙江华川实业集团有限公司 Waste incineration and sewage treatment integrated process for paper mill
CN104150732A (en) * 2014-08-29 2014-11-19 凤阳海泰科能源环境管理服务有限公司 Two-stage sludge drying system
CN104150726A (en) * 2014-07-25 2014-11-19 中国环境科学研究院 Reducing sludge treatment device and sludge drying method
CN104193124A (en) * 2014-07-25 2014-12-10 李英军 Combined device for sewage-sludge decentralized processing
CN104276737A (en) * 2014-10-13 2015-01-14 南京国能环保工程有限公司 Energy source output type sewage sludge treatment method
CN105297830A (en) * 2015-10-30 2016-02-03 重庆光煦科技有限公司 Community domestic wastewater and waste circulating energy supply system
CN105861287A (en) * 2016-06-22 2016-08-17 南通天蓝环保能源成套设备有限公司 Kitchen waste efficient wet anaerobic digestion treatment system
CN106077022A (en) * 2016-06-14 2016-11-09 深圳市朗坤环保股份有限公司 Kitchen is remaining, market of farm produce garbage as resource processing system and technological process thereof
CN107075396A (en) * 2014-09-17 2017-08-18 P·萨洛恩 System and method for handling biomass
CN108277237A (en) * 2018-03-13 2018-07-13 佛山市熙华科技有限公司 A kind of countryside wastes processing and utilization method
CN110145742A (en) * 2019-05-27 2019-08-20 光大环保能源(沛县)有限公司 A kind of garbage power environmental protection equipment
CN110345485A (en) * 2019-07-22 2019-10-18 兰州大学 A kind of oxygen-enriched incineration disposal system and method for mobile domestic garbage
CN111425868A (en) * 2020-04-16 2020-07-17 华中科技大学 Sludge self-maintaining smoldering and high-temperature aerobic fermentation composite treatment process and equipment

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Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103100548A (en) * 2012-11-12 2013-05-15 黄陈超 Rapid fermentation technology of organic garbage
CN103103112A (en) * 2012-11-12 2013-05-15 黄陈超 Organic rubbish fermentation tank
CN103103111A (en) * 2012-11-12 2013-05-15 黄陈超 Hot air radiating device of fermentation tank
CN104030538B (en) * 2013-03-07 2016-07-06 周海云 Biogas comprehensive utilization system
CN104030538A (en) * 2013-03-07 2014-09-10 周海云 Comprehensive biogas utilization system
CN103361260B (en) * 2013-07-03 2015-04-22 沈阳航空航天大学 Cow dung high-solid anaerobic digestion and pyrolysis treatment integrated system
CN103361260A (en) * 2013-07-03 2013-10-23 沈阳航空航天大学 Cow dung high-solid anaerobic digestion and pyrolysis treatment integrated system
CN103691731A (en) * 2013-12-26 2014-04-02 北京中科通用能源环保有限责任公司 Kitchen waste disposal system
CN103952292A (en) * 2014-05-21 2014-07-30 杨合长 Preparation system of renewable energy sources
CN104084417A (en) * 2014-07-16 2014-10-08 浙江华川实业集团有限公司 Waste incineration and sewage treatment integrated process for paper mill
CN104084417B (en) * 2014-07-16 2016-04-06 浙江华川实业集团有限公司 A kind of paper mill waste incineration and sewage disposal integral process
CN104150726A (en) * 2014-07-25 2014-11-19 中国环境科学研究院 Reducing sludge treatment device and sludge drying method
CN104193124A (en) * 2014-07-25 2014-12-10 李英军 Combined device for sewage-sludge decentralized processing
CN104193124B (en) * 2014-07-25 2015-11-04 李英军 The combination unit of a kind of sewage-mud dispersion treatment
CN104150732B (en) * 2014-08-29 2016-05-25 凤阳海泰科能源环境管理服务有限公司 A kind of mud two-stage anhydration system
CN104150732A (en) * 2014-08-29 2014-11-19 凤阳海泰科能源环境管理服务有限公司 Two-stage sludge drying system
CN107075396A (en) * 2014-09-17 2017-08-18 P·萨洛恩 System and method for handling biomass
CN104276737A (en) * 2014-10-13 2015-01-14 南京国能环保工程有限公司 Energy source output type sewage sludge treatment method
CN104276737B (en) * 2014-10-13 2016-07-06 南京国能环保工程有限公司 A kind of energy output type sewage sludge treatment method
CN105297830B (en) * 2015-10-30 2018-07-20 佛山市创晟投资发展有限公司 A kind of dirty useless cycle energy supplying system of cell life
CN105297830A (en) * 2015-10-30 2016-02-03 重庆光煦科技有限公司 Community domestic wastewater and waste circulating energy supply system
CN106077022A (en) * 2016-06-14 2016-11-09 深圳市朗坤环保股份有限公司 Kitchen is remaining, market of farm produce garbage as resource processing system and technological process thereof
CN105861287A (en) * 2016-06-22 2016-08-17 南通天蓝环保能源成套设备有限公司 Kitchen waste efficient wet anaerobic digestion treatment system
CN108277237A (en) * 2018-03-13 2018-07-13 佛山市熙华科技有限公司 A kind of countryside wastes processing and utilization method
CN110145742A (en) * 2019-05-27 2019-08-20 光大环保能源(沛县)有限公司 A kind of garbage power environmental protection equipment
CN110345485A (en) * 2019-07-22 2019-10-18 兰州大学 A kind of oxygen-enriched incineration disposal system and method for mobile domestic garbage
CN111425868A (en) * 2020-04-16 2020-07-17 华中科技大学 Sludge self-maintaining smoldering and high-temperature aerobic fermentation composite treatment process and equipment

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