WO2012075756A1 - 城乡生活垃圾资源化利用方法 - Google Patents
城乡生活垃圾资源化利用方法 Download PDFInfo
- Publication number
- WO2012075756A1 WO2012075756A1 PCT/CN2011/072418 CN2011072418W WO2012075756A1 WO 2012075756 A1 WO2012075756 A1 WO 2012075756A1 CN 2011072418 W CN2011072418 W CN 2011072418W WO 2012075756 A1 WO2012075756 A1 WO 2012075756A1
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- WIPO (PCT)
- Prior art keywords
- garbage
- waste
- anaerobic
- tank
- biogas
- Prior art date
Links
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/28—Magnetic plugs and dipsticks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
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- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/50—Treatments combining two or more different biological or biochemical treatments, e.g. anaerobic and aerobic treatment or vermicomposting and aerobic treatment
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F9/00—Fertilisers from household or town refuse
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
- C10L5/46—Solid fuels essentially based on materials of non-mineral origin on sewage, house, or town refuse
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P5/00—Preparation of hydrocarbons or halogenated hydrocarbons
- C12P5/02—Preparation of hydrocarbons or halogenated hydrocarbons acyclic
- C12P5/023—Methane
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/02—Combustion or pyrolysis
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/06—Heat exchange, direct or indirect
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/26—Composting, fermenting or anaerobic digestion fuel components or materials from which fuels are prepared
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/28—Cutting, disintegrating, shredding or grinding
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/40—Applying a magnetic field or inclusion of magnets in the apparatus
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/54—Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/54—Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
- C10L2290/545—Washing, scrubbing, stripping, scavenging for separating fractions, components or impurities during preparation or upgrading of a fuel
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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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
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
- Y02P20/145—Feedstock the feedstock being materials of biological origin
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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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- 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
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
-
- 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
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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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
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
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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
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Definitions
- the present invention relates to a method of utilizing garbage to utilize resources to eliminate urban and rural domestic garbage.
- BACKGROUND OF THE INVENTION With the advancement of society, sustainable development has become a goal pursued by civilization. As a product of human activities, garbage has become a burden on the earth and has become a serious obstacle to the development of human society. The annual growth rate of garbage in the world is 8.42%, while the growth rate of China's garbage is over 10%. The world produces 490 million tons of garbage every year. China alone produces nearly 150 million tons of municipal waste every year. The accumulated domestic garbage in China has reached 7 billion tons.
- Urban and rural domestic waste is mainly divided into two categories from the perspective of resource utilization:
- the first type of anaerobic decomposition waste waste consisting of degradable organic matter with high water content and easy to be corrupted, including kitchen waste, waste wood, waste cotton and waste. Cotton, etc., most of the pollution from garbage comes from this, including the combustible gas and plant fertilizer;
- the second is non-anaerobic decomposition of waste, including waste plastics, scrap metal and other recyclable materials and a small amount of soil, Ash, glass, ceramics, construction waste, etc., including resources such as scrap metal and plastics, chemical fiber, etc.
- the garbage dump is a place for mosquitoes, flies, rats, and insects. It is a source of infection for malaria, schistosomiasis, Japanese encephalitis, cholera, dysentery, typhoid fever, hepatitis, plague, leptospirosis, and blood-sucking diseases.
- the garbage is piled up at random, and the biological action produces C0 2 and CH 4 as well as the toxic gas H 2 S, which can also cause an explosion accident. Harmful substances in the garbage continuously pollute the air, soil and water bodies, and then use air, soil, water, food as a medium or carrier to invade the human body and damage the health of the human body.
- the landfill method is the most used waste disposal method.
- the principle is to fill the waste at a certain height in a selected place, and cover the material to achieve a stable state through long-term physical, chemical and biological effects.
- Specific methods include natural stacking and sanitary landfill.
- the natural stacking method is simple and easy, the disadvantage is that the environmental pollution caused by it is serious. Serious and long-term pollution of soil and groundwater is a negative emergency measure.
- the sanitary landfill method is now a method of mass processing urban and rural domestic waste.
- the sanitary landfill method is widely used in various countries around the world.
- the disadvantages of the sanitary landfill method are that it occupies a large area, the engineering organization is complex, harmless, and the degree of volume reduction is low.
- Incineration is to send garbage as a solid fuel into a waste incinerator. Under high temperature conditions, the combustible components in the garbage react with the oxygen in the air in a strong chemical reaction, releasing heat, converting into high-temperature combustion gas and having a small amount and stable nature. Solid residue.
- the advantage of incineration treatment is that the reduction effect is good, the residue volume after incineration is reduced by more than 90%, the weight is reduced by more than 80%, and the treatment is thorough.
- the disadvantage is that it destroys resources.
- the garbage contains about 70% of water. The organic matter consumes energy. The combustible garbage releases energy. When the energy is consumed and the energy is released during the incineration process, the remaining energy is little or negative energy. Therefore, the heat value of the garbage is required.
- Incineration consumes coal, oil and other combustion-supporting energy, wastes a large amount of recoverable resources, and forms dibenzodioxins (PCDD) and chlorinated dibenzofurans (PCDF)
- garbage is the most resource-exploiting and inexhaustible "resource deposit", which can become a new starting point for resource recycling and an important part of the circular economy.
- Organic waste accounts for 60% ⁇ 70% of domestic waste. It is a valuable resource.
- the proportion of organic matter in garbage has also increased.
- the deepening and deepening of the understanding of garbage is an important guiding principle for finding the correct way to dispose of garbage.
- Non-anaerobic waste such as waste plastics and waste fibers in garbage cannot be recycled, and sorting is difficult, resulting in great waste of resources.
- DISCLOSURE OF THE INVENTION The technical problem to be solved by the present invention is to provide a method for utilizing urban and rural domestic garbage resources that does not require pre-classification of garbage, garbage sorting, and garbage resource utilization, and which can continuously process garbage.
- the technical solution of the present invention is: a method for utilizing urban and rural domestic garbage resources, comprising an acidified anaerobic tank, a deep anaerobic tank, a biogas gas collecting tank, a gas generating unit, and the gas inlet of the gas generating unit passes
- the pipeline is connected to the biogas collection tank, including the following steps:
- Garbage receiving step Discharging the transported garbage into a garbage hopper or a garbage silo;
- Uniform clothing step Transfer the garbage in the garbage hopper or garbage bin to the next step to ensure the subsequent steps are continued to prevent the subsequent steps from being blocked or interrupted.
- the garbage in the garbage hopper or garbage bin The bag is torn open, the large plastic garbage, the large waste wood, the textile waste is torn and cut, and the large inorganic garbage and organic garbage which cannot be torn are separated from the garbage; then the waste after the tearing is evenly distributed Transfer to the next step; the volume of the solid waste treated in this step is guaranteed to meet the crushing requirements of the crusher in the primary crushing step;
- Primary magnetic separation step magnetically selecting the waste transferred from the above steps, and removing the scrap iron from the waste Separated from the garbage to provide convenience for the subsequent crushing process, preventing the scrap iron from damaging the crusher in the primary crushing step, and recycling the scrap iron in the waste;
- Primary crushing step The waste transferred from the above steps is further broken, the plastic and textile waste are cut off, the scrap iron coated with the solid waste is separated, and part of the organic waste is slurried to make the volume of the solid waste smaller, solid
- the size of the waste is guaranteed to be transported by the sediment transport device during the primary flotation step, and the size of the plastic and textile waste ensures that screening and separation can be carried out in subsequent procedures;
- Primary panning flotation step Put the garbage treated in the above steps into the primary panning flotation cell and aerate In the panning, the solid waste with a larger specific gravity at the bottom of the panning flotation cell is transferred to the sediment washing device through the sediment conveying device, and is recycled and reused; the garbage with a light specific gravity in the panning flotation cell is passed through the floating object.
- the conveying device is transferred to the next step; the primary panning flotation liquid containing the slurry organic waste is transferred to the acidified anaerobic tank through the pipeline; the uniform cutting step: the light weight transmitted in the above step is lighter The garbage is further cut, and the long-shaped garbage is completely cut off; or the long-shaped garbage in the lighter-weight garbage conveyed in the above steps is selected and further cut, and the long-shaped garbage is completely cut off; the subsequent steps are prevented; Blockage of pipes during material transportation, and ensure effective separation of plastics and chemical fibers after acidification and anaerobic;
- Acidizing anaerobic step the waste treated in the above step is sent to an acidified anaerobic tank, wherein an upper portion of the tank body of the acidified anaerobic tank is an acidification reaction zone, and a lower portion of the tank body cavity is an anaerobic decomposition zone;
- the waste in the acidification reaction zone comprises a dry acidified layer above the liquid level and a wet acidified layer below the liquid level;
- the anaerobic decomposition zone comprises a floating layer located above the anaerobic decomposition zone a suspension layer located in the intermediate layer of the anaerobic decomposition zone and a heavy sediment layer located at the bottom layer of the anaerobic decomposition zone;
- the upper portion of the tank corresponding to the acidification reaction zone is provided with a unidirectional feed
- the waste coming in from the one-way feed port is evenly sprinkled on the upper surface of the acidification reaction zone, the bottom of the anaerobic decomposition zone is provided with
- Screening and separating step the first solid-liquid discharge port and the second solid-liquid discharge port discharge material of the acidified anaerobic tank in the above step are respectively sent to a screening device, and the solid content is crushed in the screening device, which is anaerobic
- the organic waste is further pulverized, and the plastic and chemical fiber are washed and sieved out, and the sieved plastic and chemical fiber are recovered; the biogas slurry mixed with insufficient anaerobic decomposition waste is transferred to the next step; this step is in a closed space.
- Buffer adjustment step The biogas slurry mixed with anaerobic waste in the above step is temporarily stored in a buffer adjustment tank, and the buffer adjustment tank is provided with a liquid inlet for receiving the liquid inlet of the biogas slurry in the above step, and receiving liquid generated by other steps.
- Deepening the anaerobic step feeding the biogas slurry conveyed in the above step into the deep anaerobic tank for anaerobic reaction, the top of the deep anaerobic tank is provided with a biogas outlet, and the biogas outlet is connected to the pipeline through the pipeline Biogas collection tank,
- the bottom of the deep anaerobic tank is provided with a sludge outlet to the sludge sedimentation tank, the upper part of the deep anaerobic tank is provided with a supernatant outlet, and the supernatant outlet is connected with a biogas release tank through a pipeline or Connecting the acidified anaerobic tank, the supernatant liquid passing through the biogas release tank is returned to the step of requiring liquid replenishment before the step; the gas outlet of the biogas release tank is connected to the biogas collecting tank through a pipeline;
- Sludge sedimentation concentration step the sludge transferred from the above step is placed in a sludge sedimentation tank for precipitation, and the supernatant liquid in the sludge sedimentation tank is sent back to the buffer adjustment tank; the precipitated sludge is taken out and reused; After drying, it is made into fertilizer or coal; this step is carried out in a closed space, the sealed space is provided with a biogas outlet, and the biogas outlet is connected to the biogas collection tank through a pipeline.
- At least one of the auxiliary crushing step and the auxiliary panning flotation step are added after the primary crushing step and the primary panning flotation step; wherein:
- Auxiliary crushing step further crushing the lighter weight of the transported waste, slurging some of the remaining organic waste into a slurry, making the volume of the solid waste smaller, and separating the inorganic waste wrapped in the garbage from the organic waste.
- the separation of organic waste and inorganic waste is convenient for the following steps; the size of the solid waste can be transported by the sediment transport device in the auxiliary panning flotation step, and the size of the plastic and textile waste can be checked and separated in the subsequent procedure;
- Auxiliary panning flotation panning step the garbage processed in the above step is placed in the auxiliary panning flotation cell, and subjected to aeration panning, and the garbage having a larger specific gravity at the bottom of the panning flotation cell is transported through the sediment.
- the device is transferred to the sediment cleaning device, and is recycled and reused; the lighter-weighted garbage in the panning flotation cell is transported to the next step through the floating material conveying device; the auxiliary panning flotation liquid containing the slurry organic waste It is transferred to the acidified anaerobic tank through a pipeline.
- the sediment conveying device is a screw conveyor; and the floating object conveying device is a screw conveyor.
- the sediment washing device is a sand washing machine, and the washing liquid of the sand washing machine is conveyed to the acidified anaerobic tank through a pipe.
- the washed precipitate is transported to a building material workshop to manufacture building materials.
- an auxiliary magnetic separation step is added, and the garbage after the primary crushing step is again subjected to magnetic separation, and the remaining scrap iron in the garbage is separated from the garbage for recycling.
- the auxiliary magnetic separation step is added before the acidification anaerobic step, and the acidified anaerobic tank is entered.
- the garbage is again magnetically selected, and the remaining scrap iron in the garbage is separated from the garbage and recycled.
- all the processing steps and the processing steps involved in the processing are performed in a closed workshop, and the gas generator set and the biogas collecting tank are located outside the closed workshop, and the closed workshop is provided with a plurality of passing pipes.
- the road is connected to the negative pressure mixed air collection port of the gas generator set air inlet.
- the negative pressure mixed air collecting port is disposed at a odor emission place in the workshop and/or an odor escape where the odor is diffused outside the workshop.
- the screening device in the screening and separating step is provided with a mixed gas collecting cover of a mixed gas of biogas and air, and the mixed air outlet of the mixed gas collecting cover is connected to the pipe through the pipeline.
- the air inlet of the gas generator set is provided with a mixed gas collecting cover of a mixed gas of biogas and air.
- the buffer adjustment tank in the buffer adjustment step is further provided with a biogas liquid heating device to accelerate the speed of the anaerobic reaction in the subsequent step.
- the heat medium of the biogas liquid heating device is derived from the cooling water of the gas generator set and/or the exhaust gas of the gas generator set.
- the cutting of the garbage in the uniform cutting step adopts a stamping and cutting method.
- the first solid-liquid discharge port and the second solid-liquid discharge port in the acidified anaerobic step alternately open.
- the biogas release tank in the deepening anaerobic step causes the biogas in the supernatant to escape by spraying.
- the plastic and chemical fiber sieved in the screening and separating step are cracked to prepare a fuel.
- the external hydration in the process of utilizing the urban and rural domestic waste resources is derived from domestic sewage or sewage containing higher COD.
- the sludge taken out in the sludge precipitation concentration step is dried to be a fertilizer or a coal.
- the garbage does not need manual direct incorporation from the beginning, and the scrap iron is separated by magnetic separation to recycle the scrap iron; the inorganic waste is separated and recycled by aeration washing and flotation; After the anaerobic waste in the crushing and panning flotation, most of the anaerobic tanks enter the acidified anaerobic tank by washing the flotation liquid, and the remaining anaerobic waste Garbage and plastics and textiles with anaerobic waste are cut into acidified anaerobic tanks. In acidified anaerobic tanks, anaerobic waste is acidified and preliminary anaerobic reactions occur. Part of the energy in anaerobic waste is extracted.
- the anaerobic waste attached to the plastic and chemical fiber is also acidified and stripped, so it can be easily sorted out in the subsequent screening step; in the deep anaerobic tank, the residue of the garbage undergoes sufficient anaerobic reaction, anaerobic
- the energy contained in the garbage is further released and converted into biogas; the sludge after the waste treatment can be used as fertilizer or coal.
- the resources contained in the garbage of the whole process are gradually separated or released and collected, and no pollutants are discharged until the treatment is completed; the invention does not need to classify the garbage, and the classification and screening of the garbage runs through the whole process of the garbage utilization.
- FIG. 1 is a flow chart of an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
- a method for utilizing urban and rural domestic garbage resources includes an acidified anaerobic tank, a deepened anaerobic tank, a biogas collecting tank, and a gas generator set, and the gas inlet of the gas generating unit is connected to the biogas collecting gas through a pipeline. tank.
- all the processing steps and the equipment involved in the processing steps are performed in a closed workshop, and the gas generator set and the biogas collecting tank are located outside the closed workshop, and the closed workshop has multiple passes.
- the pipeline is connected to the negative pressure mixed air collecting port of the gas generator set air inlet, the negative pressure mixed air collecting port is disposed at the odor emission place in the workshop, and the odor escape portion (such as the window) is spread out on the workshop wall. ) There is also a negative pressure mixed air collection port.
- the polluting gas in the closed workshop is collected and burned by the gas generator set.
- the closed workshop is only relatively closed, and the outside air is continuously replenished into the closed workshop through the gap, thereby making the whole
- the treatment plant will not emit odors, completely solve the problem of odor disturbance, thus solving the limitations of the location of the waste treatment plant.
- Step 1 Garbage receiving step: The urban and rural domestic garbage collected by the garbage truck is discharged into the garbage hopper or the garbage silo, and the garbage truck enters and exits the closed workshop with two gates; firstly, the outer gate is opened, and the inner gate is at this time Close, the garbage truck enters; closes the outer gate, then opens the inner gate, and the garbage truck is unloaded; after the unloading is completed, the inner gate is closed, the outer gate is opened, and the garbage truck is driven out; the odor disappears during the entire unloading process.
- Step 2 Uniform clothting step: uniformly transfer the garbage in the garbage hopper or the garbage silo to the subsequent steps to ensure the subsequent steps are continuously performed to prevent the subsequent steps from being blocked or interrupted; in this step, the garbage hopper or the garbage silo
- the garbage bag is torn open, and the large plastic garbage, large waste wood, and textile waste are torn and cut, and the large inorganic garbage and organic garbage that cannot be torn are separated from the garbage; then the tear is cut off.
- the garbage is uniformly transferred to the next step; the volume of the solid waste processed in this step is guaranteed to meet the crushing requirements of the crusher in the primary crushing step; the biggest problem of the garbage disposal is the plastic and fiber in the garbage, and the conventional crusher cannot afford at all. It will cause entanglement and damage to the crusher. If it is broken directly, the garbage bag cannot be opened, and large garbage cannot be fed, causing blockage and interruption of the process.
- Step 3 Primary magnetic separation step: magnetically selecting the waste conveyed by the above steps, separating the waste iron in the garbage from the garbage, providing convenience for the subsequent crushing process, preventing the scrap iron from destroying the crusher in the primary crushing step And recycle the scrap iron in the garbage; because the iron is extremely hard and has a certain plasticity, it is easy to damage the crusher.
- Step 4 Primary crushing step: further break the waste conveyed by the above steps, cut off the plastic and textile waste, separate the scrap iron coated by the solid waste, and slurize part of the organic waste to make the volume of the solid waste. Smaller, the size of the solid waste is guaranteed to be transported by the sediment conveying device in the primary flotation step, and the size of the plastic and textile waste can be checked and separated in the subsequent procedures; some methods of anaerobic treatment in the prior art are adopted. The method of pulverization, plastic and textile waste is also pulverized into fine powder, can not be anaerobic or can not be separated, resulting in waste of resources, and the residue after the treatment has caused new pollution to the soil.
- Step 5 Two-stage magnetic separation step (auxiliary magnetic separation step): The garbage processed in the above step is again magnetically selected, and the remaining scrap iron in the garbage is separated from the garbage and recycled.
- Step 6 Primary panning flotation step: Put the garbage processed in the above step into the primary panning flotation cell, and Performing aeration and panning, transferring the solid waste with a larger specific gravity at the bottom of the panning flotation cell to the sand washing machine through the screw conveyor, recycling and recycling, for example, transferring to the building materials workshop for manufacturing building materials; The lighter weight of the selected tank is transferred to the next step through the screw conveyor; the primary panning flotation liquid containing the slurry organic waste is conveyed through the pipeline to the acidified anaerobic tank;
- Step VII secondary crushing step (assisted crushing step): further crushing the lighter weight of the transported waste, slurging the remaining part of the organic waste into a slurry, making the volume of the solid waste smaller, and wrapping the garbage Inorganic waste is separated from the organic waste to facilitate the separation of organic waste and inorganic waste in the following steps; the size of the solid waste can be transported by the screw conveyor in the auxiliary washing and flotation step, and the size of the plastic and textile waste is guaranteed. Screen separation can be performed in the program;
- Step 8 Secondary flotation step (assisted flushing and flotation washing step): Put the garbage processed in the above step into the auxiliary panning flotation cell, and perform aeration and panning, which will wash the bottom of the flotation cell.
- the garbage with a larger specific gravity is transferred to the sediment cleaning device through the sediment conveying device, and is recycled and reused; the lighter weight of the garbage in the panning flotation cell is transported to the next step through the floating material conveying device;
- the auxiliary panning flotation liquid of the organic waste is conveyed through the pipeline to the acidified anaerobic tank.
- Step IX Uniform cutting step: further cutting the lighter weight of the garbage conveyed in the above step, completely cutting off the long-shaped garbage; or the long strip in the garbage with a lighter specific gravity transmitted in the above steps
- the garbage is selected for further cutting, completely cutting off the long-shaped garbage; preventing the blockage of the pipeline during the subsequent step of conveying the material, and ensuring the effective separation of the plastic and the chemical fiber after acidification and anaerobic; after successive processing steps, in this step
- the waste contains all the plastics and textiles, part of the anaerobic waste (most of the anaerobic waste is broken up and floated into the deep anaerobic tank), in order to avoid the blockage of the pipeline in the subsequent steps, which is beneficial to the subsequent steps.
- the separation and separation of plastics and chemical fibers, using the stamping and cutting method to process the three-dimensional size of the garbage into the set size range basically eliminates the existence of long strip plastics and textiles.
- Step 10 three-stage magnetic separation step (auxiliary magnetic separation step): The garbage processed in the above step is again magnetically selected, and the remaining scrap iron in the garbage is separated from the garbage and recycled.
- Step 11 Acidizing anaerobic step: feeding the waste treated in the above step into an acidified anaerobic tank, wherein an upper portion of the inner cavity of the tank is an acidification reaction zone, and a lower portion of the inner cavity of the tank is an anaerobic decomposition zone;
- the waste in the acidification reaction zone comprises a dry acidified layer above the liquid level and a wet acidified layer below the liquid level; the anaerobic layer;
- the decomposition zone includes a floating layer located in an upper layer of the anaerobic decomposition zone, a suspension layer located in an intermediate layer of the anaerobic decomposition zone, and a heavy sediment layer located at a bottom layer of the anaerobic decomposition zone; Providing a unidirectional feed port in an upper portion of the acidification reaction zone, and the garbage coming in from the one-way feed port is evenly sprinkled on the upper surface of the acidification reaction zone, and the bottom of the anaerobic de
- the main function of the acidified anaerobic tank of the invention is to acidify the waste, and the invention takes into consideration the advantages of both the anaerobic dry fermentation method and the anaerobic wet fermentation method.
- the advantage of the anaerobic dry fermentation method is that the circulation of air is favorable.
- the acidification reaction is not conducive to the anaerobic reaction.
- the advantage of the anaerobic wet fermentation method is that the direct contact with the air is not conducive to the acidification reaction but is beneficial to the anaerobic reaction. Both methods can not give the best performance of the acidification reaction and the anaerobic reaction. .
- the waste in the acidification reaction zone of the present invention comprises a dry acidified layer above the liquid level and a wet acidified layer below the liquid level, the dry acidified layer enables the waste to be sufficiently acidified and heat is generated, and the wet acidified layer is further acidified and Falling into the anaerobic decomposition zone, and then the anaerobic waste continuously turns into a biogas slurry for preliminary anaerobic reaction, and the lighter weight garbage such as wood blocks, foam, etc. floats on the lower bottom surface of the wet acidified layer, after a certain period of time Accumulation can be discharged through the second solid-liquid discharge port.
- the first solid-liquid discharge port and the second solid-liquid discharge port in this step are alternately opened, and cannot be simultaneously opened to ensure that no turbulent flow occurs in the acidified anaerobic tank, and the layered distribution structure of the material in the tank is destroyed.
- Step 12 screening separation step: the first solid liquid discharge port and the second solid liquid discharge port discharge material of the acidified anaerobic tank in the above step are respectively sent to a screening device, and the solid content is crushed in the screening device.
- the anaerobic organic waste is further pulverized, and the plastic and chemical fiber are washed and sieved, and the sieved plastic and chemical fiber are recovered; the biogas slurry mixed with insufficient anaerobic decomposition waste is transferred to the next step;
- the mixing device is provided with a mixed gas collecting cover of a mixed gas of biogas and air, and the mixed air outlet of the mixed gas collecting cover is connected to the air inlet of the gas generating unit through a pipeline.
- the plastic and chemical fiber screened out in this step are cracked to prepare fuel.
- Step 13 buffer adjustment step: the biogas slurry mixed with anaerobic waste in the above step is temporarily stored in a buffer adjustment tank, and the buffer adjustment tank is provided with a liquid inlet for receiving the biogas slurry in the above step, and receiving other steps.
- This step is in a confined space
- the sealed space is provided with a biogas outlet, and the biogas outlet is connected to the biogas collection tank through a pipeline;
- the heat medium of the biogas heating device in the step is derived from the cooling water of the gas generator set and
- a known heat exchanger can be used for the biogas liquid heating device.
- Step 14 Deepening the anaerobic step: feeding the biogas liquid conveyed in the above step into the deep anaerobic tank for performing an anaerobic reaction, wherein the top of the deep anaerobic tank is provided with a biogas outlet, and the biogas outlet is passed through the tube
- the road is connected to the biogas collecting tank, the bottom of the deep anaerobic tank is provided with a sludge outlet to the sludge sedimentation tank, and the upper part of the deep anaerobic tank is provided with a supernatant outlet, the supernatant
- the outlet is connected with a biogas release tank or a acidified anaerobic tank through a pipeline, and the supernatant liquid passing through the biogas release tank is sent back to the step of requiring liquid replenishment before the step; the gas outlet of the biogas release tank is connected through a pipeline To the biogas collecting tank; in this step, the energy contained in the organic waste in the garbage is completely released.
- Step 15 sludge precipitation concentration step: the sludge transferred from the above step is placed in a sludge sedimentation tank for precipitation, and the supernatant liquid in the sludge sedimentation tank is sent back to the buffer adjustment tank; after the precipitated sludge is taken out Reusing; drying and then making fertilizer or burning coal; this step is carried out in a closed space, the sealed space is provided with a biogas outlet, and the biogas outlet is connected to the biogas collecting tank through a pipeline.
- the water and equipment required for water supply are derived from domestic sewage or sewage containing higher COD, avoiding the consumption of water resources, and treating part of the sewage, thereby making the invention more significant technological progress.
- the invention does not need to classify garbage, and the classification and screening of garbage runs through the whole process of garbage utilization, overcomes the biggest bottleneck restricting garbage disposal, has strong practicability, not only does not generate processing cost, but also can obtain huge economic benefits.
- the invention can make the anaerobic method treat the waste continuously, and the treatment amount is large; the invention completely solves the problem that the non-anaerobic wastes such as waste plastics and waste chemical fibers in the garbage cannot be recycled, and the resources in the garbage are completely recovered. .
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EP11847475.8A EP2650273B1 (en) | 2010-12-09 | 2011-04-02 | Resource utilizing method of refuses in urban and rural |
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CN108018199A (zh) * | 2017-12-27 | 2018-05-11 | 山东明硕新能源科技有限公司 | 一种秸秆制备沼气的装置 |
CN109570206A (zh) * | 2019-02-12 | 2019-04-05 | 德清华得环保设备有限公司 | 一种花园式地下消融垃圾转型发电设备 |
CN109570206B (zh) * | 2019-02-12 | 2024-03-15 | 德清华得环保设备有限公司 | 一种花园式地下消融垃圾转型发电设备 |
CN111054735A (zh) * | 2019-12-31 | 2020-04-24 | 菲德克(天津)环保科技有限公司 | 一种厨余垃圾的处理系统及处理方法 |
CN111196999A (zh) * | 2020-01-13 | 2020-05-26 | 中国科学院青岛生物能源与过程研究所 | 一种生物质垃圾批式微生物发酵处理系统及处理方法 |
CN113388492A (zh) * | 2021-06-21 | 2021-09-14 | 上海环境工程设计研究院有限公司 | 一种果蔬垃圾浆料的水解-除杂装置及方法 |
CN116200218A (zh) * | 2023-04-26 | 2023-06-02 | 北京鼎创环保有限公司 | 一种装修垃圾生产燃料棒的生产系统及生产工艺 |
CN116200218B (zh) * | 2023-04-26 | 2023-08-15 | 北京鼎创环保有限公司 | 一种装修垃圾生产燃料棒的生产系统及生产工艺 |
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Publication number | Publication date |
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CN102172596B (zh) | 2012-07-11 |
US20130252314A1 (en) | 2013-09-26 |
EP2650273A4 (en) | 2015-06-10 |
JP2014505581A (ja) | 2014-03-06 |
EP2650273B1 (en) | 2016-12-07 |
JP5666012B2 (ja) | 2015-02-04 |
EP2650273A1 (en) | 2013-10-16 |
US9776224B2 (en) | 2017-10-03 |
CN102172596A (zh) | 2011-09-07 |
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