WO2010052804A1 - Système de traitement de déchets organiques - Google Patents

Système de traitement de déchets organiques Download PDF

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WO2010052804A1
WO2010052804A1 PCT/JP2009/001509 JP2009001509W WO2010052804A1 WO 2010052804 A1 WO2010052804 A1 WO 2010052804A1 JP 2009001509 W JP2009001509 W JP 2009001509W WO 2010052804 A1 WO2010052804 A1 WO 2010052804A1
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tank
treatment
organic waste
anaerobic
treatment tank
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PCT/JP2009/001509
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English (en)
Japanese (ja)
Inventor
潤一 高橋
一孝 梅津
陽子 宮崎
修 浜本
卓也 三崎
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国立大学法人帯広畜産大学
三井造船株式会社
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Priority to JP2010536634A priority Critical patent/JPWO2010052804A1/ja
Publication of WO2010052804A1 publication Critical patent/WO2010052804A1/fr

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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
    • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/006—Regulation methods for biological treatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/302—Nitrification and denitrification treatment
    • C02F3/305—Nitrification and denitrification treatment characterised by the denitrification
    • C02F3/306—Denitrification of water in soil
    • C—CHEMISTRY; METALLURGY
    • 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
    • C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • C05F17/90—Apparatus therefor
    • C05F17/957—Apparatus therefor using two or more serially arranged devices
    • C—CHEMISTRY; METALLURGY
    • 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
    • C05F17/90—Apparatus therefor
    • C05F17/989—Flow sheets for biological or biochemical treatment
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS 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
    • C12M21/00—Bioreactors or fermenters specially adapted for specific uses
    • C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS 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
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/58—Reaction vessels connected in series or in parallel
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS 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
    • C12M47/00—Means for after-treatment of the produced biomass or of the fermentation or metabolic products, e.g. storage of biomass
    • C12M47/18—Gas cleaning, e.g. scrubbers; Separation of different gases
    • 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
    • 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
    • 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
    • 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
    • Y02W10/10—Biological treatment of water, waste water, or sewage
    • 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

Definitions

  • the present invention relates to an organic waste treatment system for dispersing a load of organic waste treatment that occurs due to fluctuations in the amount of organic waste generated in the treatment of organic waste.
  • Patent Document 1 organic waste such as livestock manure, garbage, sewage sludge, etc. is subjected to methane fermentation treatment (anaerobic treatment), and methane gas generated by the fermentation treatment is recovered and used as a power generation or heat source.
  • FIG. 1 of Patent Document 1 organic waste is subjected to methane fermentation treatment with methane bacteria in a methane fermentation tank, and methane gas generated by the fermentation treatment is converted into purified biogas by removing hydrogen sulfide and the like in a desulfurization tower and recovered.
  • Technology for use as a heat source or the like is disclosed.
  • a technique is disclosed in which air containing diffused ammonia generated by aeration is treated as an ammonia trap and recovered as an ammonia solution.
  • organic waste is subjected to methane fermentation treatment with sufficient residence time in the methane fermentation tank.
  • the methane fermenter is an organic material derived from livestock manure generated in the winter so that the residence time can be sufficiently methane fermented even in the winter when the amount of organic waste derived from livestock manure is increased. Designed according to the amount of toxic waste. That is, the methane fermenter was designed in accordance with the case where the amount of organic waste derived from livestock manure was maximized. Therefore, the equipment tended to increase in size.
  • a methane fermentation tank is designed according to the amount of organic waste derived from livestock manure generated in summer, the methane fermenter can be designed smaller, but the amount of organic waste derived from livestock manure generated in winter In order to treat all of the above, there is a disadvantage that sufficient residence time cannot be obtained at the scale of the designed methane fermenter, and the yield of purified biogas falls.
  • This invention is made in view of such a situation, and provides the organic waste processing system for distributing the load of the organic waste processing produced because the generation amount of organic waste fluctuates. is there.
  • a first aspect of an organic waste treatment system is an organic waste treatment system for fermenting an organic waste, wherein the organic waste is subjected to anaerobic fermentation.
  • the tank is characterized in that it can be switched to both an aerobic treatment condition and an anaerobic treatment condition.
  • capacitance of a 1st processing tank can be set smaller than the maximum amount of generation amount of organic waste, and the enlargement of an installation can be prevented. Since at least the most upstream tank of the second treatment tank is configured to be switchable to both an aerobic treatment condition and an anaerobic treatment condition, the organic waste in the first treatment tank If the methane fermentation is sufficiently performed (when the amount of organic waste generated is small), the fermentation solution from the first treatment tank is subjected to an aerobic treatment in the second treatment tank. On the other hand, if the methane fermentation in the first treatment tank of organic waste is insufficient (when the amount of organic waste generated is large), the fermentation liquid from the first treatment tank is at least the second treatment tank.
  • the fermented liquid that has been subjected to the anaerobic treatment in the uppermost tank of the second treatment tank can be subjected to aerobic treatment in each downstream tank connected in series. In other words, the load caused by the variation in the amount of organic waste generated is distributed in a well-balanced manner.
  • a second aspect of the organic waste treatment system according to the present invention is the organic waste treatment system according to the first aspect, wherein the residence time of the organic waste in the first treatment tank is the organic waste.
  • Control that performs anaerobic treatment in at least the uppermost tank of the second treatment tank and aerobic treatment in the other tank when the amount of the generated material is less than a set value due to fluctuations in the generation amount It has the part.
  • the residence time in the first treatment tank is less than or equal to the set value due to fluctuations in the generation amount of the organic waste generation source, that is, in the first treatment tank.
  • the amount of processing increases (the load increases and methane fermentation is not sufficient)
  • anaerobic treatment is performed in at least the uppermost tank of the second treatment tank, and aerobic treatment is performed in the other tanks. It has the effect of dispersing the load of processing organic waste in one treatment tank.
  • the first treatment tank can be designed to be small, and the first treatment tank can be manufactured at low cost.
  • the biogas is utilized using the biogas generated in the first treatment tank. And a biogas generated by anaerobic treatment in the second treatment tank is sent to the biogas utilization device.
  • the biogas generated by methane fermentation in the first treatment tank is recovered and used, and because the methane fermentation is insufficient in the first treatment tank, that is, the residence time is processed below the set value. Therefore, even when biogas cannot be generated sufficiently, biogas is generated by anaerobic treatment in the second treatment tank. And it has the effect that more biogas can be utilized by sending the biogas to a biogas utilization apparatus.
  • the second treatment tank is anaerobic and favorable.
  • a tank configured to be switchable in temperament is characterized in that an inflow portion of a processing liquid from the tank to an adjacent tank is provided below the liquid level.
  • a fifth aspect of the organic waste treatment system according to the present invention is the organic waste treatment system according to any one of the first aspect to the third aspect, wherein the second treatment tank is a single The tank is partitioned by a weir to form a series multi-tank structure.
  • the whole tank can be made aerobic by sending air into a tank using an air supply means. Further, by stopping the air supply by the air supply means, it is possible to easily switch from an anaerobic tank to an aerobic tank in a short time.
  • distributes the load of organic waste processing which arises because the generation amount of organic waste fluctuates, and can process organic waste efficiently at low cost is realized. Is possible. Further, it is possible to secure a large amount of biogas generated.
  • 1 is a schematic diagram of an organic waste treatment system according to a first embodiment of the present invention.
  • 1 is a schematic diagram of an organic waste treatment system according to a first embodiment of the present invention. Schematic of the organic waste processing system which concerns on the 2nd Embodiment of this invention. The top view of the 2nd processing tank concerning the present invention. Schematic of the organic waste processing system which concerns on the 3rd Embodiment of this invention.
  • FIG. 1 shows that the generation amount of organic waste is small, and the residence time of methane fermentation in the first treatment tank 1 can be longer (longer) than the set value or the set value, and the organic waste is sufficiently treated with methane fermentation.
  • the outline of the system of the present invention at the time is shown.
  • the livestock manure (organic waste) generated from the barn 11 which is the source of organic waste is discharged into the pipe 5a maintained in an anaerobic state and is in a completely anaerobic state in the first treatment tank 1 ( Methane fermenter). And the biogas produced
  • the fermented liquid after fermentation in the first treatment tank 1 is introduced into the second treatment tank 2 partitioned into a serial multi-tank structure through the pipe 5b, and is fermented there.
  • an aerobic process is performed in each tank 21, 22, 23, 24 partitioned by the weirs 2d, 2e, 2f from the upstream to the downstream of the second processing tank 2.
  • the arrangement state of the pipe 5b may be either an aerobic state or an anaerobic state.
  • the amount of livestock manure (organic waste) in the first treatment tank 1 is relatively small, that is, the first When the processing load in one treatment tank 1 is small (usually in summer), the residence time of methane fermentation in the first treatment tank 1 can be longer than the set value or the set value, and livestock manure is sufficiently treated with methane fermentation is there. The reason is that sufficient methane fermentation has already been performed in the first treatment tank, and almost all biogas generated from livestock manure can be recovered.
  • each tank 21, 22, 23, 24 of the 2nd processing tank 2 is a tank for carrying out the aerobic process of the fermented liquid processed by the 1st processing tank, Therefore
  • the livestock manure itself which is an organic waste is processed. Therefore, it can be designed to be considerably smaller than the first treatment tank. Therefore, it can design at low cost.
  • the fermentation liquid flows from the upstream to the downstream of the second treatment tank 2
  • the fermentation liquid flows from each tank to the downstream tank through the inflow portions 2a, 2b, and 2c provided in the lower part of each tank.
  • the position where the inflow portions 2a, 2b, and 2c are provided is not limited to the lower portion of each tank.
  • the fermented liquor that has been aerobically treated in each layer 21, 22, 23, 24 of the second treatment tank 2 is introduced into the denitrification device 3 through the pipe 5c and subjected to nitrogen reduction treatment, and then discharged through the line 3a. Returned to farmland.
  • the pipe 5c may be in an aerobic state.
  • the pipe 5c is disposed at the upper part of the tank 24 of the second treatment tank, but may be disposed at the lower part.
  • the organic waste treated in the present invention includes, for example, green farm waste and wastewater treatment sludge in addition to the livestock manure generated from the barn 11 described above.
  • the green agricultural waste includes not only household waste but also industrial waste, such as agricultural / fishery waste and food processing waste.
  • the methane fermentation tank of the first treatment tank 1 used in the present invention is preferably composed of a tank in which air is completely shut off in order to maintain the activity by the absolute anaerobic methane fermentation bacteria.
  • the shape and operation of the methane fermenter depends on the solids concentration (usually in the range of 3-40% by weight) and the fermentation temperature (usually about 37 ° C for medium temperature fermentation, about 55 ° C for high temperature fermentation, about 60 ° C for ultrahigh temperature fermentation). The conditions will be different.
  • a wet type complete mixing type fermenter in the case of a raw material having a high water content (up to a solid concentration of 10% by weight), a wet type complete mixing type fermenter, and in the case of a raw material having a low water content (a solids concentration of 30 to 40% by weight), It is preferable to use a so-called dry type plug flow type (extrusion type) fermenter.
  • the pipe 5 a that sends the organic waste generated from the organic waste generation source 10 to the first treatment tank 1 is also air. It is preferable to have a structure that completely blocks. Note that the tank need not be a tank as long as it is completely anaerobic.
  • size of the 1st processing tank 1 to be used can be designed in arbitrary magnitude
  • the capacity of the first treatment tank is preferably set smaller than the maximum amount of organic waste generated. Preferably it is less than half of the maximum amount of organic waste generated.
  • the methane fermentation tank 1 may be provided with heating means for keeping warm as required.
  • the residence time of the methane fermentation treatment performed in the first treatment tank 1 is about 20 to 30 days for medium temperature fermentation, about 15 days for high temperature fermentation, and about 10 days for ultra high temperature fermentation.
  • FIG. 2 shows the system of the present invention when the amount of organic waste generated is large and the residence time of methane fermentation in the first treatment tank 1 is less than the set value, and the methane fermentation treatment of organic waste is insufficient. This is an overview.
  • anaerobic treatment is performed in at least the most upstream tank 21 among the tanks 21, 22, 23, 24 of the second treatment tank 2, and other tanks.
  • aerobic processing is performed.
  • the tank 21 is provided with a cover sheet 21a, which will be described later, to create an anaerobic state.
  • the amount of livestock manure (organic waste) in the first treatment tank 1 is large, that is, the first treatment tank 1.
  • the processing load in the first treatment tank 1 is large (usually in winter) and a large amount of livestock excreta must be treated, so that the residence time of methane fermentation in the first treatment tank 1 is not more than a set value. That is, since methane fermentation in the 1st processing tank 1 is inadequate, the fermented liquid from the 1st processing tank 1 is anaerobically processed in the tank 21 which is the most upstream of a 2nd processing tank, and a 1st processing tank Biogas that could not be generated can be generated and recovered. Therefore, the tank 21 is provided with a biogas collection pipe 6b for collecting the generated biogas.
  • each tank 21, 22, 23, 24 of the 2nd processing tank 2 is a tank for processing the fermented liquid processed by the 1st processing tank, Therefore
  • the livestock manure itself which is an organic waste is processed. It can be designed to be considerably smaller than the first treatment tank.
  • the tank 21 is completely anaerobic. Therefore, it is desirable that the pipe 5b is also kept in a completely anaerobic state. Furthermore, it is preferable to provide the inflow part 2 a for allowing the fermentation liquid to flow from the tank 21 to the downstream tank 22 below the level of the fermentation liquid in the tank 21. This is because if the inflow portion is provided above the liquid level, air may enter the tank 21 from that portion and an anaerobic state cannot be maintained. In addition, you may perform anaerobic processing in a some tank according to the condition of the methane fermentation with respect to the organic processed material of the 1st processing tank 1. FIG.
  • the first embodiment of the present invention is from the state of FIG. That is, this is an aspect in which the most upstream tank 21 of the second treatment tank 2 can be switched from the aerobic state to the anaerobic state.
  • the cover sheet 21a and the control unit 8 are provided, and the uppermost tank 21 of the second treatment tank 2 is automatically changed from the aerobic state to the anaerobic state, or from the anaerobic state to the aerobic state. It is the mode which was made to switch to.
  • a flow meter 10 is provided in the middle of the pipe 5a, and the processing amount of livestock manure which is an organic waste discharged from the barn 11 is calculated from the detected value by the control unit 8, and the processing amount is the first processing tank.
  • the control unit 8 operates the pump P, which is an air supply means, to operate the second processing tank 2 in the second processing tank 2 when the processing amount is such that the methane fermentation exceeds the set value of the residence time of methane fermentation performed in 1.
  • Air is sent into the most upstream tank 21 (covered with the cover sheet 21a) to bring the tank 21 into an aerobic state.
  • the control unit 8 opens the valve 9 in order to discharge the supplied air from the tank 21 to the outside by an electric signal.
  • the amount of livestock excrement calculated by the control unit 8 from the detection value of the flow meter 10 is equal to or less than the set value of the residence time of methane fermentation performed in the first processing tank 1, and the amount of methane fermentation is insufficient.
  • the control unit 8 brings the uppermost tank 21 of the second treatment tank 2 into an anaerobic state by not operating the pump P as the air supply means or by stopping the operation.
  • the control unit 8 closes the valve 9 opened by the electric signal.
  • the other tanks 22, 23, 24 are kept in an aerobic state.
  • the flowmeter 10, the control unit 8, the valve 9, and the pump P automatically change the uppermost tank 21 of the second treatment tank 2 from the aerobic state to the anaerobic state, or from the anaerobic state to the aerobic state. Can be switched automatically.
  • FIG. 4 is a plan view of the second treatment tank 2 used in the first embodiment (A), and is a plan view of the second treatment tank 2 used in the second embodiment (B) and A plan view (C) of another embodiment of the two-treatment tank 2 is shown.
  • the embodiment of the second treatment tank 2 is not limited to that shown in FIG. 4 as long as the object of the present invention can be achieved.
  • the second treatment tank 2 used in each embodiment of the present invention has a structure in which a plurality of tanks 21, 22, 23, 24 divided in a series multi-tank structure are provided in multiple stages.
  • the second treatment tank 2 has a concave shape, and weirs 2d, 2e, and 2f are provided inside the concave shape to partition the second treatment tank 2 into a plurality of tanks.
  • Inflow portions 2a, 2b, and 2c are provided below the weirs 2d, 2e, and 2f so that the fermented liquid processed in each tank flows from the upstream tank to the downstream tank.
  • FIG. 4B in the tank 21, in order to perform anaerobic treatment, the upper part of the tank 21 is covered with a cover case 21a so that air does not enter from the outside, and the inside of the tank 21 is hermetically sealed. The state can be maintained.
  • the cover case 21a only needs to maintain anaerobic properties in the tank 21, and examples thereof include a soft resin sheet.
  • Part of the cover case is provided with a collection pipe 6b for collecting biogas generated by anaerobic treatment.
  • the cover sheet 21a is preferably a lightweight sheet having flexibility. This is because the cover sheet 21a is always pushed up from the liquid level of the fermentation broth by the pressure of the generated gas if it is soft and lightweight, and the generated biogas can be collected efficiently. In addition, it is also possible to use the thing similar to the cover sheet 21a mentioned above for the upper part of the 1st processing tank 1. FIG. If the cover sheet 21a is used for the upper part of the 1st processing tank 1, the manufacturing cost of the 1st processing tank 1 can be restrained low.
  • FIG. 4C shows another embodiment of the second treatment tank.
  • the weirs 2d, 2e, and 2f are provided so that a gap X is formed from the edge of the second processing tank 2.
  • the fermentation liquid itself in the second treatment tank 2 flows in a meandering manner, and the stirring effect of the fermentation liquid in each of the tanks 21, 22, 23, 24 is obtained. It will be obtained.
  • the weir 2d is installed without providing the gap X in order to make the tank 21 anaerobic, and the outlet 2a is formed at the lower part of the tank 21.
  • the weir 2d is installed without providing the gap X in order to make the tank 21 anaerobic, and the outlet 2a is formed at the lower part of the tank 21.
  • FIG. 5 shows a third embodiment of the present invention.
  • the structure of the second treatment tank 2 is made independent of the tanks 21, 22, 23, 24, and the tanks 21, 22, 23, 24 are connected in series. is there.
  • Each tank 21, 22, 23, 24 is connected in the part of outflow port 2a, 2b, 2c.
  • a place where an outlet connecting each tank is provided is appropriately provided in consideration of anaerobic treatment and aerobic treatment.
  • the structure of the present Example of the 2nd processing tank 2 is applicable also to a 1st embodiment.
  • the treatment of manure discharged from a livestock barn has been taken as an example of the treatment of organic waste, but the present invention is not limited to this treatment, for example, garbage or sewage treatment sludge. It can also be applied to organic waste derived from the like.
  • the present invention uses at least the most upstream tank 21 of the second treatment tank 2 as a fermentation time for the methane fermentation treatment of the first treatment tank 1. It is characterized in that it can be switched from an aerobic state to an anaerobic state, or from an anaerobic state to an aerobic state based on the set value.
  • the aerobic treatment is performed in the second treatment tank 2 when there is no load on the treatment in the first treatment tank 1, and at least the second treatment tank 2 is loaded when the treatment in the first treatment tank 1 is burdened.
  • an aerobic process can be performed in a subsequent tank.
  • the load applied to the first treatment tank 1 is distributed in a well-balanced manner.
  • the present invention can perform both aerobic treatment and anaerobic treatment on at least the most upstream tank 21 of the second treatment tank 2 according to the state of the methane fermentation treatment of the first treatment tank 1.
  • the 2nd processing tank 2 is comprised as a structure which can be switched in this way.
  • the present invention has an effect of distributing the load applied to the first treatment tank 1 in a well-balanced manner, and therefore it is not necessary to design the first treatment tank 1 in accordance with the maximum amount of organic waste.
  • the first treatment tank 1 is not required to be a large treatment tank at a high cost, and the first treatment tank 1 is designed to be small to reduce costs and to secure a large amount of biogas generation. is doing.

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  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Soil Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Treatment Of Sludge (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

L'invention vise à proposer un système de traitement de déchets organiques avec lequel la charge de traitement de déchets organiques qui se produit du fait de la variation de la quantité de déchets organiques générée peut être répartie, et les déchets organiques peuvent être traités efficacement à un faible coût. A cet effet, l'invention porte sur un système de traitement de déchets organiques à faible coût pour permettre à la variation de charge de traitement de déchets organiques à laquelle est soumis un premier réservoir de traitement (1) d’être répartie d'une manière équilibrée, et au premier réservoir de traitement (1) de ne pas devoir être conçu pour la quantité maximale de traitement de déchets organiques, grâce à la configuration, au moins le réservoir le plus en amont (21) d'un second réservoir de traitement (2) pouvant être commuté d'un état aérobie à un état anaérobie, ou d'un état anaérobie à un état aérobie, en fonction de la valeur de détermination de temps de fermentation pour le traitement de fermentation de méthane par le premier réservoir de traitement (1).
PCT/JP2009/001509 2008-11-07 2009-03-31 Système de traitement de déchets organiques WO2010052804A1 (fr)

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JP2010536634A JPWO2010052804A1 (ja) 2008-11-07 2009-03-31 有機性廃棄物処理システム

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JP2008-286628 2008-11-07
JP2008286628 2008-11-07

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012035222A (ja) * 2010-08-10 2012-02-23 Toshiba Corp メタン発酵槽及び天幕用カバーシートの施工方法
JP2012236115A (ja) * 2011-05-09 2012-12-06 Eco Power Corp メタン発酵システム
CN104226671A (zh) * 2013-06-11 2014-12-24 远东生物科技股份有限公司 生物废弃物绿色处理系统及方法
CN107253804A (zh) * 2017-07-28 2017-10-17 武汉益锦祥生物环保有限公司 一种畜禽养殖污水处理及综合利用方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002307098A (ja) * 2001-04-13 2002-10-22 Mitsubishi Heavy Ind Ltd 有機性汚泥の嫌気性消化方法及び嫌気性消化装置
JP2003190923A (ja) * 2001-12-28 2003-07-08 Taikisha Ltd 有機物処理方法、及び、有機物処理装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002307098A (ja) * 2001-04-13 2002-10-22 Mitsubishi Heavy Ind Ltd 有機性汚泥の嫌気性消化方法及び嫌気性消化装置
JP2003190923A (ja) * 2001-12-28 2003-07-08 Taikisha Ltd 有機物処理方法、及び、有機物処理装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012035222A (ja) * 2010-08-10 2012-02-23 Toshiba Corp メタン発酵槽及び天幕用カバーシートの施工方法
JP2012236115A (ja) * 2011-05-09 2012-12-06 Eco Power Corp メタン発酵システム
CN104226671A (zh) * 2013-06-11 2014-12-24 远东生物科技股份有限公司 生物废弃物绿色处理系统及方法
CN107253804A (zh) * 2017-07-28 2017-10-17 武汉益锦祥生物环保有限公司 一种畜禽养殖污水处理及综合利用方法
CN107253804B (zh) * 2017-07-28 2019-10-22 武汉益锦祥生物环保有限公司 一种畜禽养殖污水处理及综合利用方法

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