CN105798050B - Kitchen castoff cooperates with treatment process with domestic garbage burning electricity generation - Google Patents

Kitchen castoff cooperates with treatment process with domestic garbage burning electricity generation Download PDF

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CN105798050B
CN105798050B CN201610164888.1A CN201610164888A CN105798050B CN 105798050 B CN105798050 B CN 105798050B CN 201610164888 A CN201610164888 A CN 201610164888A CN 105798050 B CN105798050 B CN 105798050B
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cooperates
grease
transported
electricity generation
treatment process
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CN105798050A (en
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冯伊璇
张元睿
张榕晏
王聚仓
赵丞
赵一丞
李春波
郭倚帆
尚浩冉
魏航
魏一航
霍婉旖
陈昊远
慎伟琴
张晓峰
韩朝阳
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张共敏
冯建忠
王聚仓
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    • 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
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/20Waste processing or separation

Abstract

Kitchen castoff cooperates with treatment process with domestic garbage burning electricity generation, including step in detail below:(1), kitchen garbage is collected;(2), to after collection kitchen garbage carry out foreign substances sorting, the combustible sorted out be transported to MSW Incineration Plant carry out combustion power generation;(3), to foreign substances sort after material crush processing;(4), to after crushing material carry out homogenization;(5), the material after homogenization is carried out dehydrating, the liquid material that dehydration obtains is kept in;(6), grease first separation processing is carried out to liquid material, the moisture content that grease first separation is handled is collected into anaerobic fermentation tank, and biogas residue, biogas slurry and biogas are generated after anaerobic fermentation, and biogas residue, biogas slurry are detached.Present invention process is advanced, fully rationally cooperates with processing advantage with what kitchen garbage fermented using MSW Incineration Plant, realizes the innoxious of garbage disposal, minimizing, recycling.

Description

Kitchen castoff cooperates with treatment process with domestic garbage burning electricity generation
Technical field
The invention belongs to technical field of waste treatment more particularly to a kind of kitchen castoff to assist with domestic garbage burning electricity generation Same treatment process.
Background technology
Kitchen garbage(Kitchen castoff)It is most important one kind in food refuse, including family, school, dining room and food and drink The food process leftover bits and pieces (food waste) of the generations such as industry and edible remnants (hogwash).Its complicated component, mainly oil, water, pericarp, The mixture of many kinds of substance such as vegetables, rice and flour, fish, meat, bone and useless tableware, plastics, paper handkerchief, chemically on composition, there is shallow lake Powder, cellulose, protein, lipid and inorganic salts.China's kitchen garbage quantity is very huge, and in rapid increase trend.
Kitchen garbage has the dual character of significant harm and resource, and feature can be summarized as:Moisture content height, reachable 80% - 95%;Salt content is high, some areas are high containing capsicum, acetic acid;High organic content, protein, cellulose, starch, fat Deng;Rich in nitrogen, phosphorus, potassium, calcium and various trace elements;There are pathogen, pathogenic microorganisms;Perishable, rotten, smelly, taste Raw mosquito.
In terms of waste of resource, calculate according to Ministry of Agriculture relevant expert, kitchen garbage includes a large amount of nutriment, mainly into It is that grease and protein, alternative corn, fish meal, dregs of beans etc. are processed into high energy protein high-quality feed and produce biological bavin to divide The suitable raw material of oil.Expert interpretation is calculated by dry matter content, and 50,000,000 tons of kitchen garbages are equivalent to 5,000,000 tons of high-quality feeding Material, the energy included are equivalent to the energy quantum of output in annual 10000000 mu of arable lands, and the protein included is equivalent to annual 20000000 The protein quantum of output of mu soybean.That is, if the kitchen garbage of the 1 year output in China is all utilized, it is equivalent to section About 10,000,000 mus arable lands.In face of Chinese arable land anxiety, food shortage, the present situation of a large amount of food import feeds is needed every year, is closed Reason is increase resource utilization, the effective way for solving China's food problem to a certain extent using kitchen garbage.Also, this Kind utilizes, and meets minimizing, recycling, recycling feature, is the lively case developed a circular economy.
Mainly there is the following for kitchen garbage harmfulness:
(1)It pollutes environment, influence the appearance of the city.Because kitchen garbage contains higher organic matter and moisture, easily by microorganism Effect, and the phenomenon that rots;And discarded standing time is more long, putrid and deteriorated phenomenon is just more serious.In particular to Summer, temperature is higher, rot also faster, at this time easily generates a large amount of leakage water and foul gas, grows mosquito Worm makes a very bad impression to environmental sanitation.
(2)It is detrimental to health.The lipoid material of meat proteins and animality in kitchen garbage, mostlys come from There is provided those livestock poultry of meat product, livestock easily occurs " same after direct food is without the kitchen garbage that is effectively treated Class is mutually eaten " homologous contact scar, and cause the cross infection of epidemic disease between people and animals, be detrimental to health, and may promote certain The propagation of fatal disease.Such as the infectious disease of large-scale outbreak in history.It says for another example, the bird flu propagated at present in many places Deng cause, it may be possible to since infected cattle, sick sheep or the corpse of sick pig have been made into animal feed, so as to cause the extensive of disease It infects.
(3)It spreads the disease.The outdoor storage of kitchen garbage can incur the amount reproduction of mosquitos and flies mouse worm, be that disease is spread Main media.
(4)The lower sepage generated when being stacked in kitchen garbage enters sewage disposal system, can cause content of organics Increase, so as to aggravate the burden of sewage treatment plant, increase operating cost.
At present, generally it is using aerobic compost or anaerobic digestion producing methane technique, idiographic flow to kitchen garbage:Unify back After takeing in process for producing line, by sorting, magnetic separation, the inorganic matters such as chopsticks, polybag, metal are sifted out, remaining kitchen is given up Gurry after broken, water-oil separating, dehydration, is sent into aerobic fermentation equipment, and treated, and kitchen castoff becomes industrial grease And Nutrition Soil.Anaerobic digestion process, pre-treatment and aerobic compost pre-treatment are basically identical, and slurrying feeding is detested after carrying commercial grease Oxygen tank carries out anaerobic fermentation, generates biogas, carries out biogas residue, biogas slurry separation, biogas residue conduct by centrifugation to mixture later The raw material of organic fertilizer processed, biogas slurry are further processed qualified discharge.The existing biogas residue to after anaerobic digestion of kitchen wastes is generally adopted Take plus flocculant precipitation add in caliche after, plate compression, be dehydrated to 55% hereinafter, landfill disposal.First, cause organic resources unrestrained Take, second is that equipment investment is big, processing cost is high, third, landfill land occupation resource.
Domestic garbage burning electricity generation is the carry out high temperature incineration higher to fuel value after domestic waste collection(Also thoroughly Having eliminated pathogenic organisms and corrosivity has confidential object), in high temperature incineration(The smog of generation is by processing)The thermal energy of middle generation High-temperature vapour is converted into, rotating turbine is pushed, produces electricl energy generator.
China is waste resources big country in the world.If China can substantially effectively generate electricity rubbish, can incite somebody to action Coal is saved, " economy of resources " is extremely considerable.Although the garbage power of China is at the early-stage, have very promising prospects.China is abundant Waste resources, there is great potential benefits.National urban is huge because of recrementitious loss every year, and is integrated profit With can but create more benefits, the market space is huge.With each link technology such as garbage reclamation, processing, transport, comprehensive utilization It continues to develop, technique increasingly section emulates the advanced, and waste incineration and generating electricity is the most effective minimizing of urban garbage disposal, resource Change, innoxious mode.
Invention content
The present invention provides that a kind of profound processing intensity is big, resource product to solve shortcoming of the prior art The kitchen castoff that wide in variety, resource product recycles effect good cooperates with treatment process with domestic garbage burning electricity generation, can Processing cost is reduced, improves treatment effect.
In order to solve the above technical problems, the present invention adopts the following technical scheme that:Kitchen castoff is sent out with consumer waste incineration Electricity collaboration treatment process, including step in detail below,
(1), kitchen garbage is collected;
(2), foreign substances sorting is carried out to the kitchen garbage after collection, the combustible sorted out is transported to house refuse and burns It burns power plant and carries out combustion power generation;
(3), to foreign substances sort after material crush processing;
(4), to after crushing material carry out homogenization;
(5), the material after homogenization is carried out dehydrating, the liquid material that dehydration is obtained carries out temporary It deposits, the solid material that dehydration obtains is transported to MSW Incineration Plant carries out combustion power generation or will be at dehydration Obtained solid material is managed to be handled by aerobic fermentation process;
(6), to liquid material carry out grease first separation processing, the moisture content that grease first separation is handled, which is collected into, to be detested In aerobe fermentation tank, biogas residue, biogas slurry and biogas are generated after anaerobic fermentation, biogas residue, biogas slurry are detached.
The step(5)In aerobic fermentation process specifically include following steps,
(1), first the solid material addition auxiliary material that obtains dehydration adjust moisture to 60%-67%, be then delivered to close It closes and main fermentation is carried out in horizontal double-layer barrel aerobic fermentation tank, while into closed horizontal double-layer barrel aerobic fermentation tank Gas supply, the temperature of main fermentation is 65 ° -75 °;
(2), then solid material be transported in horizontal type airtight aerobiotic fermentation tank carry out secondary aerobic fermentation, while to close It closes in horizontal aerobic fermentation tank and supplies, secondary aerobic fermentation temperature is 50 ° -60 °, after the completion of secondary aerobic fermentation, mixture Moisture content is down to 30% hereinafter, producing organic fertilizer.
By the step(6)The oil content that middle grease first separation is handled carries out grease secondary separation, secondary point of grease Oil content is obtained from after for making commercial grease, the dehydration that moisture content is transported in step (5) is obtained after grease secondary separation Obtained liquid material carries out temporary process.
Landfill leachate in MSW Incineration Plant is transported to step(6)In anaerobic fermentation process.
Biogas residue is transported to MSW Incineration Plant progress combustion power generation process or is transported to step(5)In it is good Aerobe fermentation process.
Methane purification is compressed into CNG sale or is transported to MSW Incineration Plant and carries out combustion power generation.
Biogas slurry is carried out handling to reach after municipal sewage pipe network is discharged into standard to be drained into municipal sewage pipe network.
The step(4)In to after crushing material carry out homogenization while, to after crushing material carry out Heat treatment, the heat treatment are heated using the generating waste-heat of MSW Incineration Plant;The step(5)It is middle to incite somebody to action While the liquid material that dehydration obtains carries out temporary, the liquid material that dehydration obtains is heated, institute Heat treatment is stated to be heated using the generating waste-heat of MSW Incineration Plant.
Beneficial effects of the present invention:
Present invention process is advanced, reasonable, and treating capacity is big and resource product is more, quality is good, and profound processing intensity is big, resource Change product recycling effect is good, and processing cost is relatively low, fully rationally utilizes MSW Incineration Plant and kitchen garbage fermentation Collaboration processing advantage, the landfill leachate of MSW Incineration Plant can carry out anaerobic fermentation, using generating waste-heat plus Hot kitchen garbage, can reduce processing cost, the combustible in kitchen garbage processing procedure and the biogas residue after fermentation can send to MSW Incineration Plant carries out combustion power generation, produces resource product and electric energy with market value, so as to fulfill The innoxious of garbage disposal, minimizing, recycling play an important role to improving increasingly serious resource and energy crisis.
Description of the drawings
Fig. 1 is the process flow chart of the present invention.
Specific embodiment
As shown in Figure 1, the kitchen castoff of the present invention cooperates with treatment process with domestic garbage burning electricity generation, including following tool Body step,
(1), kitchen garbage is collected;
(2), foreign substances sorting is carried out to the kitchen garbage after collection, the combustible sorted out is transported to house refuse and burns It burns power plant and carries out combustion power generation;
(3), to foreign substances sort after material crush processing;
(4), to after crushing material carry out homogenization;
(5), the material after homogenization is carried out dehydrating, the liquid material that dehydration is obtained carries out temporary It deposits, the solid material that dehydration obtains is transported to MSW Incineration Plant carries out combustion power generation or will be at dehydration Obtained solid material is managed to be handled by aerobic fermentation process;
(6), to liquid material carry out grease first separation processing, the moisture content that grease first separation is handled, which is collected into, to be detested In aerobe fermentation tank, biogas residue, biogas slurry and biogas are generated after anaerobic fermentation, biogas residue, biogas slurry are detached.
The step(5)In aerobic fermentation process specifically include following steps,
(1), first the solid material addition auxiliary material that obtains dehydration adjust moisture to 60%-67%, be then delivered to close It closes and main fermentation is carried out in horizontal double-layer barrel aerobic fermentation tank, while into closed horizontal double-layer barrel aerobic fermentation tank Gas supply, the temperature of main fermentation is 65 ° -75 °, and the auxiliary material selects sawdust, straw powder, mushroom residue etc.;
(2), then solid material be transported in horizontal type airtight aerobiotic fermentation tank carry out secondary aerobic fermentation, while to close It closes in horizontal aerobic fermentation tank and supplies, secondary aerobic fermentation temperature is 50 ° -60 °, after the completion of secondary aerobic fermentation, mixture Moisture content is down to 30% hereinafter, producing organic fertilizer.
By the step(6)The oil content that middle grease first separation is handled carries out grease secondary separation, secondary point of grease Oil content is obtained from after for making commercial grease, the dehydration that moisture content is transported in step (5) is obtained after grease secondary separation Obtained liquid material carries out temporary process.
Landfill leachate in MSW Incineration Plant is transported to step(6)In anaerobic fermentation process.
Biogas residue is transported to MSW Incineration Plant progress combustion power generation process or is transported to step(5)In it is good Aerobe fermentation process.
Methane purification is compressed into CNG sale or is transported to MSW Incineration Plant and carries out combustion power generation.
Biogas slurry is carried out handling to reach after municipal sewage pipe network is discharged into standard to be drained into municipal sewage pipe network.
The step(4)In to after crushing material carry out homogenization while, to after crushing material carry out Heat treatment, the heat treatment are heated using the generating waste-heat of MSW Incineration Plant;The step(5)It is middle to incite somebody to action While the liquid material that dehydration obtains carries out temporary, the liquid material that dehydration obtains is heated, institute Heat treatment is stated to be heated using the generating waste-heat of MSW Incineration Plant.
Present invention process is advanced, reasonable, and treating capacity is big and resource product is more, quality is good, and profound processing intensity is big, resource Change product recycling effect is good, and processing cost is relatively low, fully rationally utilizes MSW Incineration Plant and kitchen garbage fermentation Collaboration processing advantage, the landfill leachate of MSW Incineration Plant can carry out anaerobic fermentation, using generating waste-heat plus Hot kitchen garbage, can reduce processing cost, the combustible in kitchen garbage processing procedure and the biogas residue after fermentation can send to MSW Incineration Plant carries out combustion power generation, produces resource product and electric energy with market value, so as to fulfill The innoxious of garbage disposal, minimizing, recycling.
The above embodiments are only used to illustrate and not limit the technical solutions of the present invention, although with reference to above-described embodiment to this hair It is bright to be described in detail, it will be understood by those of ordinary skill in the art that:Still can the present invention be modified or be waited With replacing, without departing from the spirit or scope of the invention, or any substitutions, the power in the present invention should all be covered In sharp claimed range.

Claims (8)

1. kitchen castoff cooperates with treatment process with domestic garbage burning electricity generation, it is characterised in that:Including step in detail below,
(1), kitchen garbage is collected;
(2), to after collection kitchen garbage carry out foreign substances sorting, the combustible sorted out be transported to consumer waste incineration hair Power plant carries out combustion power generation;
(3), to foreign substances sort after material crush processing;
(4), to after crushing material carry out homogenization;
(5), the material after homogenization is carried out dehydrating, the liquid material that dehydration obtains is kept in, will be de- Solid material that water process obtains is transported to MSW Incineration Plant and carries out combustion power generation or obtain dehydration Solid material is handled by aerobic fermentation process;
(6), to liquid material carry out grease first separation processing, the moisture content that grease first separation is handled be collected into anaerobism hair In fermentation tank, biogas residue, biogas slurry and biogas are generated after anaerobic fermentation, biogas residue, biogas slurry are detached.
2. kitchen castoff according to claim 1 cooperates with treatment process with domestic garbage burning electricity generation, it is characterised in that: The step(5)In aerobic fermentation process specifically include following steps,
(1), first the solid material addition auxiliary material that obtains dehydration adjust moisture to 60%-67%, be then delivered to closed sleeping Main fermentation is carried out in formula double-layer barrel aerobic fermentation tank, while is supplied into closed horizontal double-layer barrel aerobic fermentation tank Gas, the temperature of main fermentation is 65 ° -75 °;
(2), then solid material be transported in horizontal type airtight aerobiotic fermentation tank carry out secondary aerobic fermentation, while to closed sleeping Supply in formula aerobic fermentation tank, secondary aerobic fermentation temperature is 50 ° -60 °, after the completion of secondary aerobic fermentation, mixture it is aqueous Rate is down to 30% hereinafter, producing organic fertilizer.
3. kitchen castoff according to claim 1 or 2 cooperates with treatment process with domestic garbage burning electricity generation, feature exists In:By the step(6)The oil content that middle grease first separation is handled carries out grease secondary separation, after grease secondary separation To oil content for making commercial grease, obtain what the dehydration that moisture content is transported in step (5) obtained after grease secondary separation Liquid material carries out temporary process.
4. kitchen castoff according to claim 1 cooperates with treatment process with domestic garbage burning electricity generation, it is characterised in that: Landfill leachate in MSW Incineration Plant is transported to step(6)In anaerobic fermentation process.
5. kitchen castoff according to claim 1 or 2 cooperates with treatment process with domestic garbage burning electricity generation, feature exists In:Biogas residue is transported to MSW Incineration Plant progress combustion power generation process or is transported to step(5)In aerobic hair Ferment process.
6. kitchen castoff according to claim 1 cooperates with treatment process with domestic garbage burning electricity generation, it is characterised in that: Methane purification is compressed into CNG sale or is transported to MSW Incineration Plant and carries out combustion power generation.
7. kitchen castoff according to claim 1 cooperates with treatment process with domestic garbage burning electricity generation, it is characterised in that: Biogas slurry is carried out handling to reach after municipal sewage pipe network is discharged into standard to be drained into municipal sewage pipe network.
8. kitchen castoff according to claim 1 cooperates with treatment process with domestic garbage burning electricity generation, it is characterised in that: The step(4)In to after crushing material carry out homogenization while, the material after crushing is heated, it is described Heat treatment is heated using the generating waste-heat of MSW Incineration Plant;The step(5)It is middle to obtain dehydration Liquid material while carry out temporary, the liquid material that dehydration obtains is heated, the heat treatment profit It is heated with the generating waste-heat of MSW Incineration Plant.
CN201610164888.1A 2016-03-22 2016-03-22 Kitchen castoff cooperates with treatment process with domestic garbage burning electricity generation Expired - Fee Related CN105798050B (en)

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CN106269788A (en) * 2016-08-16 2017-01-04 杭州新世纪能源环保工程股份有限公司 One way of life garbage burning factory works in coordination with the method that full dose processes changing food waste
CN108841871A (en) * 2018-07-03 2018-11-20 武汉天源环保股份有限公司 A kind of kitchen garbage dry and wet classified resource processing method
CN109812814A (en) * 2019-03-18 2019-05-28 王英宾 A kind of waste incineration improvement technique
CN111750357A (en) * 2019-10-03 2020-10-09 上海康恒环境股份有限公司 Vein industrial park system with waste incineration power plant as core
CN111059539A (en) * 2019-12-31 2020-04-24 四川精丰机械有限公司 Garbage treatment system and method
CN111632995A (en) * 2020-05-29 2020-09-08 蔚复来(浙江)科技股份有限公司 Resourceful treatment method and system for kitchen waste
CN112851050A (en) * 2021-03-16 2021-05-28 四川嘉博文生物科技有限公司 Method for treating dining table residues by applying aerobic and anaerobic cooperative treatment
CN113578919B (en) * 2021-07-19 2022-09-09 上海大学 Method for improving dehydration performance of kitchen waste anaerobic digestion biogas residues

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