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WO2016137145A1 - Procédé de digestion anaérobie à haute température de déchets organiques utilisant un prétraitement de solubilisation thermique continu de type à recirculation d'énergie et à économie d'énergie - Google Patents

Procédé de digestion anaérobie à haute température de déchets organiques utilisant un prétraitement de solubilisation thermique continu de type à recirculation d'énergie et à économie d'énergie Download PDF

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Publication number
WO2016137145A1
WO2016137145A1 PCT/KR2016/001410 KR2016001410W WO2016137145A1 WO 2016137145 A1 WO2016137145 A1 WO 2016137145A1 KR 2016001410 W KR2016001410 W KR 2016001410W WO 2016137145 A1 WO2016137145 A1 WO 2016137145A1
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Prior art keywords
organic waste
heat
anaerobic digestion
solubilization
waste
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Ceased
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PCT/KR2016/001410
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English (en)
Korean (ko)
Inventor
이종인
이창열
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SK Chemicals Co Ltd
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SK Chemicals Co Ltd
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Publication date
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Publication of WO2016137145A1 publication Critical patent/WO2016137145A1/fr
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    • 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
    • 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
    • C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/033—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment comminuting or crushing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air

Definitions

  • the present invention relates to a high temperature anaerobic digestion method of organic waste using energy recycling and energy-saving continuous heat solubilization pretreatment, and more particularly, to heat solubilizing pretreatment of organic waste prior to anaerobic digestion.
  • the present invention relates to a method and apparatus for high temperature anaerobic digestion of organic wastes in which solubilization efficiency is improved and energy saving can be achieved by applying solubility recycling method by applying solubilization with primary solubilization and flash reaction using temperature and pressure difference.
  • Organic wastes including sewage sludge from sewage treatment, wastewater containing a large amount of organic matter such as food waste and livestock manure, can produce methane that can be used as an energy source through the anaerobic digestion process. .
  • the anaerobic digestion process using organic waste is generally carried out at a medium temperature of 35 ⁇ 10 °C, low biogas yield, long time spent, due to the low anaerobic digestion yield organic Since the volume of the waste is not greatly reduced, the reduction ratio was also kept low.
  • Anaerobic digestion can be proposed as a way to solve such energyization / resource / reduction of organic waste.
  • Anaerobic digestion focuses on the generation of methane that can be used as an energy source as some of the anaerobic microorganisms that can survive in the absence of oxygen are infused with organic matter by injecting anaerobic microorganisms into the reactor where the anaerobic condition is continuously maintained.
  • Means a method of continuously supplying waste.
  • the injected organic waste is used to feed anaerobic microorganisms, and then the volume is reduced and discharged.
  • the organic wastes ingested by anaerobic microorganisms are converted into biogas containing methane and carbon dioxide as main components.
  • the produced biogas can be used as an energy source through purification and compression processes, and can also be produced as electric energy using a cogeneration generator.
  • Korean Patent Registration No. 10-1066124 an acid fermentation tank and a microbial culture tank are connected by connecting a dry digester and a wet digester in series in the process of generating methane using organic waste such as food waste, sewage sludge, and livestock manure. It suggests an anaerobic digestion method that is not necessary.
  • Korean Patent No. 10-1092018 discloses a method for producing continuous high temperature single phase anaerobic fermentation activated sludge using sewage sludge
  • Korean Patent No. 10-0588166 discloses a high temperature anaerobic digester connected internally to a medium temperature anaerobic digester. An anaerobic digestion method of organic wastewater and wastes by a temperature-fancy process has been proposed.
  • the heat solubilization pretreatment method applied in the conventional anaerobic digestion method helps to increase anaerobic digestion efficiency and stabilize the digestion process in the treatment of organic wastes using anaerobic digestion to increase the reduction rate and increase biogas production. It is a method for giving, and similar pretreatment methods include ultrasonic and chemical (alkali) injection.
  • the ultrasonic pretreatment method is to irradiate organic wastes with ultrasonic waves to reduce the molecular weight of the polymer.
  • the equipment is simpler than other methods, and the initial investment cost is low, but there is a limit to the large-sized device, and the sewage sludge and Likewise, there is a disadvantage in that efficiency is drastically lowered for highly viscous organic wastes.
  • Pretreatment using chemicals is a method of increasing the pH of organic wastes by adding alkaline chemicals and pretreatment in conjunction with methods such as crushing or thermal solubilization by applying ultrasonic pretreatment or pressure. It is mainly used as a method to increase the efficiency in conjunction with, but after the pre-treatment pH must be adjusted again, there is a disadvantage that the drug purchase costs continue to occur.
  • thermal pretreatment has a stable efficiency
  • expensive installation cost and high energy input amount are disadvantages.
  • Patent Document 1 Korean Patent Registration No. 10-1066124
  • Patent Document 2 Korean Patent Registration No. 10-1092018
  • Patent Document 3 Korean Registered Patent No. 10-0588166
  • Patent Document 4 Korean Patent Registration No. 10-0849671
  • the present invention to solve the above problems, in the thermal solubilization pretreatment of organic waste, to improve the heat solubilization pretreatment process to increase the solubilization efficiency while reducing energy use and to enable anaerobic digestion treatment more economically. Shall be.
  • an object of the present invention is to efficiently heat solubilization by heat solubilization pretreatment by increasing the solubilization efficiency by performing solubilization by first solubilizing high temperature and high pressure and flash reaction using temperature and pressure difference. To provide a high temperature anaerobic digestion method for treating organic wastes.
  • another object of the present invention is to reduce the amount of heat to be injected for the thermal solubilization reaction by first heating up the organic waste using a high temperature steam generated in the second solubilization process and then injected into a thermal solubilization reactor.
  • Another object of the present invention is to reduce the amount of heat input to the warmth required during the anaerobic digestion process by using the liquefied steam (hot water) after heating up the organic waste to heat the high temperature anaerobic digestion reaction.
  • another object of the present invention is to heat up the organic waste injected into the thermal solubilization reactor through the heat exchange of the first heat up the organic waste injected into the thermal solubilization reactor and the high temperature heat solubilizing waste flowing out of the flash tank. In other words, it is to reduce the amount of heat needed to heat up organic waste for thermal solubilization.
  • Another object of the present invention is to provide an apparatus for high temperature anaerobic digestion of organic waste useful for achieving the above object.
  • the present invention comprises the steps of removing the contaminants to remove foreign substances contained in the organic waste; Shredding the organic waste from which the contaminants have been removed, shredding the organic waste to homogenize the size, and firstly warming the waste using steam; Second warming of the first warmed organic waste after crushing by contact with a high temperature heat solubilizing waste which is solubilized and discharged in advance; A primary heat solubilization step of converting the second warmed organic waste into high molecular weight organic waste using low temperature and high pressure heat solubilization reaction; A secondary heat solubilization reaction step of causing a flash reaction by spraying hot and high pressure organic waste discharged through the heat solubilization reaction to an atmospheric pressure state; Contacting and heat-storing the second heat solubilization waste after the heat solubilization waste is contacted with the organic waste from which the contaminants injected for the heat solubilization reaction are removed; Anaerobic digestion of the stored heat solubilizing waste; Circulating steam generated during the second
  • the present invention is a contaminant removal device for removing foreign matter contained in the organic waste;
  • a heat exchanger for supplying heat required for secondary warming by contacting the first warmed organic waste after crushing with a high temperature heat solubilizing waste which is solubilized and discharged in advance;
  • a flash tank for injecting high temperature and high pressure organic waste discharged through the first heat solubilization reaction into an atmospheric pressure state and performing a second heat solubilization reaction through a flash reaction;
  • a thermal solubilization waste storage device connected to the heat exchanger and configured to contact the thermal solubilization waste, which has completed the secondary heat solubil
  • the organic waste is subjected to anaerobic digestion by thermal solubilization pretreatment, the following effects are obtained.
  • the organic waste which needs to be heated up for the heat solubilization is heated.
  • the steam which is converted into the hot water after the heat exchange is connected to the high temperature anaerobic digester to keep warm in the anaerobic digester.
  • the amount of heat required in the process can be reduced by appropriately covering the amount of heat required in the heat solubilization pretreatment and the high temperature anaerobic digestion.
  • the anaerobic digestion equipment connected to the heat solubilization pretreatment is operated at a high temperature (55 ⁇ 5 ° C.), not at medium temperature (35 ⁇ 10 ° C.), and is discharged at a high temperature even through two-stage heat exchange in the heat solubilization pretreatment step.
  • the organic wastes can be directly used, high organic waste reduction rate and biogas generation rate are maintained compared to the medium temperature anaerobic digestion, and the residence time can be lowered compared to the medium temperature anaerobic digestion.
  • two steps of heat solubilization increase the pretreatment efficiency of organic wastes
  • two steps of steam reuse and contact heat exchange reduce the amount of heat to be injected from the outside for thermal solubilization pretreatment and anaerobic digestion.
  • a high temperature anaerobic digestion apparatus it is possible to raise the heat exchange target temperature, thereby reducing the heat exchange area and the installation cost.
  • FIG. 1 is a schematic configuration diagram showing an embodiment of an anaerobic digestion system suitable for using an anaerobic digestion method of organic waste using energy recycling and energy-saving continuous heat solubilization pretreatment according to an embodiment of the present invention.
  • the anaerobic digestion method does not mean only an anaerobic digestion step, but also includes a step of pretreating organic waste by a method such as heat solubilization.
  • Anaerobic digestion equipment in the present invention is to distinguish from the anaerobic digestion apparatus for simple anaerobic digestion, it means a facility including a device necessary for operating the entire system from the thermal solubilization pre-treatment of organic waste to anaerobic digestion.
  • the present invention relates to a method for economically operating an anaerobic digestion facility through various energy recovery in an anaerobic digestion process using organic wastes such as sewage sludge.
  • organic wastes are generated in a sewage treatment facility.
  • organic wastes such as food waste and waste manure can be used.
  • the biogas generated in the anaerobic digestion facility is used to produce electricity through the cogeneration plant.
  • the energy required in the heat solubilization pretreatment step is changed by changing the temperature of the organic waste through contact heat exchange between the organic waste injected for the heat solubilization reaction and the solubilization waste discharged in the heat solubilization pretreatment step. It can be reduced.
  • the present invention undergoes a step of eliminating organic wastes, crushing organic wastes, primary and secondary heat solubilization reactions, and anaerobic digestion, and circulating steam generated during thermal solubilization,
  • the present invention relates to an anaerobic digestion method of environmentally friendly energy-saving organic wastes by circulating the steam converted into steam for use in the anaerobic digestion reaction, and an anaerobic digestion system suitable for the application.
  • the organic waste of the polymer in the primary thermal warming reaction, may be converted into a low molecular weight material of a monosaccharide, an organic acid or a mixture thereof.
  • the primary thermal warming reaction may be carried out under conditions of high temperature of 130 ⁇ 230 ⁇ 10 °C and high pressure of 13 ⁇ 25 bar.
  • the steam supplied to the crushing step of the organic material may supply heat energy of 120 ⁇ 160 ⁇ 10 °C.
  • the temperature of the organic waste may be heated to 35 ⁇ 55 ⁇ 10 °C in the crushing step by receiving the thermal energy from the steam.
  • the heat energy supplied by the steam or hot water, etc. may be configured to be supplied and circulated in a manner in which contact heat exchange is performed by configuring the inner pipe and the outer flow of the double pipe in opposite directions.
  • the organic waste introduced in the shredding step may include a step of heating up to a temperature of 120 ⁇ 130 ⁇ 10 °C through contact heat exchange.
  • the secondary heat solubilization reaction is carried out in the step of contacting the heat- solubilizing wastes of the secondary heat solubilization reaction with the organic wastes from which the contaminants injected for the heat solubilization reaction are removed, followed by heat exchange and storage.
  • the finished heat solubilizing waste may comprise a heat exchange step that is brought to a temperature of 55-75 ⁇ 10 ° C. through contact heat exchange.
  • the organic waste may include a process of flowing into the lower part after the first solubilization and flowed out to the upper portion for the primary heat solubilization reaction.
  • the organic waste flowing into the upper part after the first solubilization may include a process in which steam is generated while a flash phenomenon occurs during a flash reaction maintained at atmospheric pressure.
  • the flash reaction may include a process of stacking the second solubilized organic waste through the flash phenomenon.
  • the steam generated in the flash reaction is sent to the crushing step and supplied to the organic waste, the steam converted into hot water through steam heat exchange is supplied as thermal energy for the insulation of the anaerobic digestion reaction Can be.
  • the second solubilized thermal solubilization waste in the flash reaction may be subjected to an anaerobic digestion reaction.
  • the anaerobic digestion method according to the present invention is not only a medium temperature (35 ⁇ 10 °C) operating at a high temperature (55 ⁇ 5 °C) but also configured to efficiently perform the heat solubilization reaction, which occurs during the heat solubilization process It is a method of anaerobic digestion of organic wastes having an energy-saving system with a very high energy utilization efficiency by recirculating thermal energy and reusing it for thermal solubilization and anaerobic digestion.
  • FIG. 1 is a schematic configuration diagram showing an embodiment of an anaerobic digestion apparatus suitable for using a high temperature anaerobic digestion method of organic waste using energy recycling and energy-saving continuous heat solubilization pretreatment.
  • the anaerobic digestion apparatus includes a pretreatment facility for thermally solubilizing the organic waste injected into the anaerobic digester (or anaerobic digester) so that the anaerobic microorganisms in the anaerobic digester can be quickly and easily used for feeding.
  • a pretreatment facility for thermally solubilizing the organic waste injected into the anaerobic digester (or anaerobic digester) so that the anaerobic microorganisms in the anaerobic digester can be quickly and easily used for feeding.
  • the continuous heat solubilization pretreatment facility according to the present invention is configured to be connected to an anaerobic digestion apparatus for receiving and receiving organic wastes.
  • the storage device 1 may be additionally included immediately before or after concentration of the organic waste. .
  • the anaerobic digestion apparatus of the present invention comprises: a dust removal device (2) for removing organic matter by transporting organic wastes from the storage device (1); A shredding device (3) for storing the organic waste from which the contaminants have been removed, further shredding, and firstly raising the temperature using steam; A heat exchanger (5) for heating the first temperature and the crushed organic waste in the crushing unit for a second temperature; The heat solubilizer 6 for solubilizing the organic waste secondaryly heated at the heat exchanger 5 at a high temperature and high pressure, the outlet of the heat solubilizer 6 is maintained at atmospheric pressure, the primary A flash tank 7 for generating a flash phenomenon on the solubilized organic waste and solubilizing the organic waste secondly; A steam discharge device (8) positioned above the flash tank (7) to collect and discharge steam generated during flash development; A heat solubilizing waste discharge device (9) positioned below the flash tank (7) and configured to be connected to a heat exchange device (5) for heat exchange of the second solubilized
  • the storage device (1) is a device for storing before input to the final disposal or anaerobic digestion device 12 at the point where organic waste such as sewage sludge, food waste, livestock manure, etc., Additional devices may be installed to adjust the concentration of organic waste as needed.
  • the contaminant removal device 2 may be provided with a screen having a diameter of the organic waste passage 50 ⁇ 200 ⁇ m, preferably 80 ⁇ 120 ⁇ m. It is responsible for removing various wastes such as sand, hair, hair and vinyl contained in sewage sludge or livestock manure among organic wastes, and it is possible to determine whether to install or not according to the characteristics of organic waste at the site where the thermal solubilization pretreatment unit is installed. have.
  • the shredding device 3 may include a shredder while storing the organic waste from which the contaminants have been removed, and serves to uniformly grind the size of the organic waste by using the shredder.
  • the shredding device 3 is installed inside the pipe through which the steam generated in the heat solubilization reaction passes to warm the temperature of the organic waste through contact heat exchange between the steam and the organic waste. It may be configured to include a steam heat exchanger (4).
  • the crusher of the crusher 3 serves to continuously agitate the organic waste to uniformly distribute the organic waste in the crusher 3, contact with steam Heat exchange can also be configured to perform a role that can be made actively.
  • the heat exchanger (5) is an organic waste flowing out of the shredding device (3) and introduced into the heat solubilizer (6), and discharged from the flash tank (7) heat solubilizing waste storage device
  • Contact heat exchange between organic wastes moving to (10) may serve to reduce the energy consumption of the thermal solubilization reaction as the low temperature organic waste is converted to high temperature and the high temperature heat solubilized waste is converted to low temperature.
  • the heat exchanger 5 is preferably configured in the form of a double tube may be configured so that the flow of the inner tube and the outer face respectively.
  • the heat solubilizing device 6 is a polymer by holding the organic waste at a high temperature (130 ⁇ 230 ⁇ 10 °C) and high pressure (13 ⁇ 25 bar) for a predetermined time about 30 to 60 minutes
  • the organic waste consisting of consisting of low sugar, such as monosaccharides and organic acids can be changed to remove the bound water.
  • the flash tank 7 exposes the organic waste that passed through the heat solubilizing device 6 to atmospheric pressure to cause a flash reaction in which the diffusion phenomenon occurs instantaneously. It can also play a role in bringing about the low molecular weight of the organic waste remaining unchanged.
  • the high temperature water vapor is generated due to the pressure difference, and the generated water vapor is the steam heat exchange through the steam discharge device (8) To the device 4.
  • the heat solubilization waste that has been flash-reacted in the flash tank 7 is accumulated in the lower portion by gravity, and then through the heat solubilization waste discharge device 9, the heat exchanger ( To 5).
  • the heat-solubilizing waste heat exchanged in the heat exchange device 5 is then transferred to the anaerobic digestion device 12, a predetermined period in the thermal solubilization waste storage device 10 for a stable supply After storage, it may be configured to be supplied to the anaerobic digestion apparatus 12.
  • the hot water condensed by cooling is discharged to the lower part of the crushing device (3) to maintain the hot water storage device (11).
  • the insulation of the anaerobic digestion apparatus 12 may be transferred to the hot water pipe 13 for performing the insulation role of the anaerobic digestion apparatus 12 and then discharged.
  • the anaerobic digestion method and the anaerobic digestion apparatus for treating organic wastes according to the present invention include a continuous heat solubilization pretreatment process, and the heat solubilization pretreatment during heat treatment performed in order to proceed the anaerobic digestion more smoothly and stably.
  • by-products thermal energy
  • thermo energy such as waste heat and steam generated in the process to be heated to the process that needs to be heated to warm through contact heat exchange
  • the amount of heat to be injected in the injection heat solubilization pretreatment device is reduced, the waste heat generated after heat solubilization pretreatment This can reduce the energy consumption and improve the process to save energy more efficiently than conventional heat solubilization pretreatment.
  • the solubilization waste lowered to 55 ⁇ 75 ⁇ 10 °C through heat exchange into the high temperature anaerobic digestion equipment maintained at 55 ⁇ 5 °C to room temperature (0 ⁇ 25 °C) It is possible to operate the high temperature anaerobic digestion plant without inputting less or additional energy than the general anaerobic digestion plant, which is heated after heating up organic wastes.
  • the use of a solubilized waste heated to high temperature enables the operation of high temperature anaerobic digestion with higher organic waste reduction rate and biogas generation rate and lower residence time than medium temperature (35 ⁇ 10 °C) without additional energy input.
  • the steam generated in the flash tank of the present invention is first used for heating the organic waste from which the contaminants have been removed, and then converted into hot water, and the hot water pipe for warming the anaerobic digester after being collected by the hot water storage device.
  • the temperature at which steam is converted into hot water can be controlled by adjusting the contact time with organic waste during the process of converting steam into hot water, which is applicable to both anaerobic digestion facilities operating at medium or high temperatures.
  • the present invention is a method of operating an energy-saving facility that is very useful to apply to a treatment facility using a high temperature anaerobic digestion method of a general organic waste treatment facility.
  • the method according to the present invention When the method according to the present invention is applied to an organic waste treatment plant having an anaerobic digestion facility such as a sewage treatment plant, a food waste treatment plant, and a livestock manure treatment plant, the low molecular weight organic waste is introduced into the anaerobic digestion apparatus through thermal solubilization pretreatment. Increased productivity, increased digestion efficiency, reduced residence time in the anaerobic digestion system, and reduced moisture content of the final discharged organic waste can be expected to effectively implement energy saving of organic waste.
  • an anaerobic digestion facility such as a sewage treatment plant, a food waste treatment plant, and a livestock manure treatment plant
  • biogas produced by applying the method of the present invention may be utilized as fuel for general power generation or fuel for vehicles through purification.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Molecular Biology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Microbiology (AREA)
  • Treatment Of Sludge (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

La présente invention concerne un procédé de digestion anaérobie de déchets organiques utilisant un prétraitement de solubilisation thermique continu de type à recirculation d'énergie et à économie d'énergie et, plus particulièrement, un procédé de digestion anaérobie de déchets organiques et un appareil associé, dans lequel une solubilisation principale à haute température et à haute pression et une solubilisation secondaire utilisant une réaction flash à l'aide de différences de température et de pression sont exécutées en appliquant un procédé de recirculation d'énergie également dans un prétraitement de solubilisation thermique avant de réaliser une digestion anaérobie de déchets organiques, de telle sorte que la présente invention peut améliorer l'efficacité de solubilisation et économiser de l'énergie.
PCT/KR2016/001410 2015-02-23 2016-02-11 Procédé de digestion anaérobie à haute température de déchets organiques utilisant un prétraitement de solubilisation thermique continu de type à recirculation d'énergie et à économie d'énergie Ceased WO2016137145A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20150025345 2015-02-23
KR10-2015-0025345 2015-02-23

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WO2016137145A1 true WO2016137145A1 (fr) 2016-09-01

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020050851A (ko) * 2000-12-22 2002-06-28 김강권 메탄 공정을 연계한 고농도 유기성 폐수의 증발, 퇴비화방법 및 장치
KR100521866B1 (ko) * 2001-11-16 2005-10-17 씨에이치투엠 힐. 인크. 미립자 생분해성 유기 폐기물의 처리 방법 및 장치
KR100893377B1 (ko) * 2008-10-31 2009-04-17 (주)화인이테크 유기성 폐기물의 혐기성 소화장치
KR101272243B1 (ko) * 2013-05-07 2013-06-11 새한환경기술(주) 유기성 폐기물 처리를 위한 선택 작동식 혐기성 소화 시스템
KR101369930B1 (ko) * 2012-08-03 2014-03-06 주식회사 에코비젼 에너지 절약형 하수 슬러지 가용화 장치 및 방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020050851A (ko) * 2000-12-22 2002-06-28 김강권 메탄 공정을 연계한 고농도 유기성 폐수의 증발, 퇴비화방법 및 장치
KR100521866B1 (ko) * 2001-11-16 2005-10-17 씨에이치투엠 힐. 인크. 미립자 생분해성 유기 폐기물의 처리 방법 및 장치
KR100893377B1 (ko) * 2008-10-31 2009-04-17 (주)화인이테크 유기성 폐기물의 혐기성 소화장치
KR101369930B1 (ko) * 2012-08-03 2014-03-06 주식회사 에코비젼 에너지 절약형 하수 슬러지 가용화 장치 및 방법
KR101272243B1 (ko) * 2013-05-07 2013-06-11 새한환경기술(주) 유기성 폐기물 처리를 위한 선택 작동식 혐기성 소화 시스템

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