JP2008208355A - Apparatus for biodesulfurization of biogas - Google Patents

Apparatus for biodesulfurization of biogas Download PDF

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JP2008208355A
JP2008208355A JP2008019500A JP2008019500A JP2008208355A JP 2008208355 A JP2008208355 A JP 2008208355A JP 2008019500 A JP2008019500 A JP 2008019500A JP 2008019500 A JP2008019500 A JP 2008019500A JP 2008208355 A JP2008208355 A JP 2008208355A
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treatment
biogas
anaerobic digestion
biodesulfurization
tank
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JP5117209B2 (en
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Yasuhiko Nagamori
泰彦 永森
Takumi Obara
卓巳 小原
Nobuyuki Ashikaga
伸行 足利
Hiroshi Tamura
博 田村
Takayuki Ishige
崇之 石毛
Taku Menju
卓 毛受
Masahiko Tsutsumi
正彦 堤
Hidetake Shiire
英武 仕入
Takeo Yamamori
武夫 山森
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Toshiba Corp
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    • 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
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    • 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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  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for the biodesulfurization of a biomass that exhibits high performance for removing hydrogen sulfide and can ensure safe operation at a low running cost. <P>SOLUTION: The apparatus for the biodesulfurization of a biomass which performs the desulfurization of a biogas produced by anaerobic digestion of organic waste water comprises a biodesulfurization column 11 in which a filling material having a microorganism held in the inside thereof is disposed and a treated gas and a drainage are discharged, a sprinkling device 13 for performing sprinkling in the biodesulfurization column, an anaerobic digestion treatment tank 16 for subjecting organic waste water to anaerobic digestion treatment, and an aerobic treatment mechanism 22 disposed downstream of the anaerobic digestion treatment tank for performing an activated sludge treatment and a solid-liquid separation treatment, wherein an aerobically treated water 24 is supplied to the sprinkling unit 13 and at the same time the biogas 15 from the waste water treatment tank 16 together with air is supplied to the biodesulfurization column 11. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明はバイオガスの生物脱硫装置に関し、特に下水や産業排水等の有機性排水の嫌気性消化処理で発生するバイオガスの生物脱硫装置に関する。   The present invention relates to a biogas biodesulfurization apparatus, and more particularly to a biogas biodesulfurization apparatus generated by anaerobic digestion treatment of organic wastewater such as sewage and industrial wastewater.

周知の如く、下水や産業排水等の有機性排水の嫌気性消化処理で発生するバイオガス中には、腐食性の硫化水素が数百〜数万ｐｐｍ含まれている。バイオガスは、ガス中の硫化水素を除去（脱硫）することでガスボイラー等の燃料として用いることができる。ここで、脱硫方法の１つに生物脱硫方法がある。生物脱硫の原理は、微生物に水と硫化水素と酸素を供給することで、微生物が硫化水素を硫黄若しくは硫酸塩に変えることによりバイオガスから除去され、排水として排出されるものである。微生物は硫黄酸化細菌と呼ばれている。   As is well known, biogas generated by anaerobic digestion of organic wastewater such as sewage and industrial wastewater contains several hundred to several tens of thousands ppm of corrosive hydrogen sulfide. Biogas can be used as a fuel for a gas boiler or the like by removing (desulfurizing) hydrogen sulfide in the gas. Here, there is a biological desulfurization method as one of the desulfurization methods. The principle of biodesulfurization is that water, hydrogen sulfide, and oxygen are supplied to microorganisms, and the microorganisms are removed from biogas by changing hydrogen sulfide to sulfur or sulfate, and discharged as waste water. Microorganisms are called sulfur-oxidizing bacteria.

図５は、生物脱硫の原理を示す概略図である。図中の符番１は、供給された有機性廃水２を嫌気性消化処理する廃水処理槽を示す。この廃水処理槽１の上部からはバイオガス３が生成され、側部からは消化液が排出される。前記廃水処理槽１には、配管を介して充填材４が配置された生物脱硫塔５に接続されている。充填材４の内部には微生物が保持されている。脱硫塔４の下部側には、バイオガス供給装置６が配置されている。前記配管には空気７が供給され、バイオガス供給装置５からバイオガス３及び空気７が噴出される。生物脱硫塔５の上部からは処理ガス８が排出され、底部からは排水９が排出される。   FIG. 5 is a schematic diagram showing the principle of biodesulfurization. Reference numeral 1 in the figure indicates a wastewater treatment tank for anaerobically digesting the supplied organic wastewater 2. Biogas 3 is generated from the upper part of the wastewater treatment tank 1, and digestive juice is discharged from the side part. The wastewater treatment tank 1 is connected to a biological desulfurization tower 5 in which a filler 4 is disposed via a pipe. Microorganisms are held inside the filler 4. A biogas supply device 6 is disposed on the lower side of the desulfurization tower 4. Air 7 is supplied to the pipe, and biogas 3 and air 7 are ejected from the biogas supply device 5. A processing gas 8 is discharged from the top of the biological desulfurization tower 5, and a drainage 9 is discharged from the bottom.

生物脱硫方法として、有機性廃液が硝化脱窒された硝化液を脱硫塔内に散布する方法（特許文献１）、曝気槽の活性汚泥を脱硫槽に供給する方法（例えば、特許文献２）、酸化槽の処理水を吸収液として用い、気液接触部で硫化水素を吸収液に吸収し、酸化槽で吸収液中の硫化物を酸化分解する方法（例えば、特許文献３，４）が知られている。   As a biological desulfurization method, a method of spraying a nitrification solution obtained by nitrification and denitrification of an organic waste liquid into a desulfurization tower (Patent Document 1), a method of supplying activated sludge in an aeration tank to a desulfurization tank (for example, Patent Document 2), Known is a method (for example, Patent Documents 3 and 4) in which treated water in an oxidation tank is used as an absorption liquid, hydrogen sulfide is absorbed into the absorption liquid at the gas-liquid contact portion, and sulfides in the absorption liquid are oxidized and decomposed in the oxidation tank. It has been.

特許文献１の段落［００２９］には、「脱硫菌濃度が高い硝化液を使用するため脱硫効率を高く保持することができる」との記述がある。特許文献２の段落［００１１］には、「活性汚泥は微生物密度が高いため、水に微生物を分散させた場合と比較して効率的に脱硫できる」との記述がある。しかし生物脱硫反応は硫化水素と水との気液接触で反応が進むため、高い硫化水素除去性能を得るためには、高濃度の微生物のみでは十分でなく、高い気液接触面積が必要と考えられる。高い気液接触面積を得るためには比表面積の大きな充填材を用いる方法があるが、高濃度の微生物を含んだ硝化液や活性汚泥を用いると充填材は目詰まりしやすいという問題がある。   In paragraph [0029] of Patent Document 1, there is a description that “desulfurization efficiency can be kept high because a nitrification solution having a high concentration of desulfurization bacteria is used”. In paragraph [0011] of Patent Document 2, there is a description that “the activated sludge has a high microbial density, so that it can be efficiently desulfurized as compared with a case where microorganisms are dispersed in water”. However, the biological desulfurization reaction proceeds by gas-liquid contact between hydrogen sulfide and water. Therefore, in order to obtain high hydrogen sulfide removal performance, high-concentration microorganisms are not sufficient, and a high gas-liquid contact area is necessary. It is done. In order to obtain a high gas-liquid contact area, there is a method using a filler having a large specific surface area. However, if a nitrification liquid or activated sludge containing a high concentration of microorganisms is used, there is a problem that the filler is easily clogged.

特許文献２，３，４では、生物脱硫反応に必要な酸素の供給を、有機性排水の好気処理槽の曝気で兼用している。しかし、この場合、好気処理槽の曝気で供給された空気中の酸素が有機物の除去に用いられたか、生物脱硫反応に用いられたかが明確でない。そのため、生物脱硫の管理が難しく、特に好気処理槽の有機性排水の負荷が増大した場合には、生物脱硫反応に用いられる酸素量が減少し、脱硫効率が低下する恐れがある。
特開２００４−１３５５７９公報 特開２００３−６２４２１公報 特開２００２−７９０３４公報 特許第３２３５２３１号 In Patent Documents 2, 3, and 4, the supply of oxygen necessary for the biological desulfurization reaction is also used for aeration in an aerobic treatment tank of organic waste water. However, in this case, it is not clear whether oxygen in the air supplied by aeration in the aerobic treatment tank was used for removal of organic substances or for biodesulfurization reaction. Therefore, it is difficult to manage biodesulfurization. In particular, when the load of organic wastewater in the aerobic treatment tank is increased, the amount of oxygen used in the biodesulfurization reaction is decreased, and the desulfurization efficiency may be decreased.
JP 2004-135579 A JP 2003-62421 A JP 2002-79034 A Japanese Patent No. 3235231

本発明は上述した課題を解決するためになされたものであり、高い硫化水素除去性能を有し、低ランニングコストで安全運転が可能なバイオガスの生物脱硫装置を提供することを目的とする。また、本発明は、本発明の生物脱硫装置を採用する嫌気性消化処理を含む処理プロセス全体の運転及びランニングコストに悪影響を及ぼさないバイオガスの生物脱硫装置を提供することを目的とする。   The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a biogas biodesulfurization apparatus that has high hydrogen sulfide removal performance and can be safely operated at a low running cost. It is another object of the present invention to provide a biogas biodesulfurization apparatus that does not adversely affect the operation and running costs of the entire treatment process including an anaerobic digestion process employing the biodesulfurization apparatus of the present invention.

(1) 本発明のバイオガスの生物脱硫装置は、有機性廃水の嫌気性消化によって生成したバイオガスの脱硫を行うバイオガスの生物脱硫装置であって、内部に微生物を保持させた充填材が配置され，処理ガス及び排水を排出する生物脱硫塔と、この生物脱硫塔内で散水を行う散水装置と、有機性廃水を嫌気性消化処理する嫌気性消化処理槽と、この嫌気性消化処理槽の下流側に配置された，活性汚泥処理と固液分離処理を行う好気処理機構とを具備し、好気処理機構からの好気処理水を前記散水装置に供給するとともに、嫌気性消化処理槽からのバイオガスを空気とともに生物脱硫塔に供給することを特徴とする。   (1) The biogas biodesulfurization apparatus of the present invention is a biogas biodesulfurization apparatus that desulfurizes biogas generated by anaerobic digestion of organic wastewater, and has a filler that holds microorganisms therein. A biological desulfurization tower that is disposed and discharges processing gas and waste water, a sprinkler that sprinkles water in the biological desulfurization tower, an anaerobic digestion treatment tank that performs anaerobic digestion treatment of organic wastewater, and the anaerobic digestion treatment tank An aerobic treatment mechanism that performs activated sludge treatment and solid-liquid separation treatment, and supplies anaerobic treated water from the aerobic treatment mechanism to the watering device and anaerobic digestion treatment The biogas from the tank is supplied to the biological desulfurization tower together with air.

(2) 本発明のバイオガスの生物脱硫装置は、下水の好気処理において固液分離処理で発生する余剰汚泥の嫌気性消化によって生成したバイオガスの脱硫を行うバイオガスの生物脱硫装置であって、内部に微生物を保持させた充填材が配置され，処理ガス及び排水を排出する生物脱硫塔と、この生物脱硫塔内で散水を行う散水装置と、下水の活性汚泥処理と固液分離処理を行う好気処理機構と、この好気処理機構の下流側に配置された，余剰汚泥が収容される余剰汚泥貯留槽と、この余剰汚泥貯留槽の下流側に配置された，余剰汚泥を好気性処理する嫌気性消化処理槽とを具備し、好気処理機構からの好気処理水を前記散水装置に供給するとともに、嫌気性消化処理槽からのバイオガスを空気とともに生物脱硫塔に供給することを特徴とする。   (2) The biogas biodesulfurization apparatus of the present invention is a biogas biodesulfurization apparatus that desulfurizes biogas generated by anaerobic digestion of excess sludge generated in solid-liquid separation processing in aerobic treatment of sewage. In addition, a biodesulfurization tower in which a filler that holds microorganisms is placed and exhausts processing gas and wastewater, a watering device that sprinkles water in the biological desulfurization tower, activated sludge treatment and solid-liquid separation treatment of sewage An aerobic treatment mechanism that performs the wastewater treatment, a surplus sludge storage tank that is disposed downstream of the aerobic treatment mechanism and that stores surplus sludge, and a surplus sludge that is disposed downstream of the surplus sludge storage tank. An anaerobic digestion tank for aerobic treatment, supplying aerobic treated water from an aerobic treatment mechanism to the watering device, and supplying biogas from the anaerobic digestion tank together with air to a biological desulfurization tower It is characterized by that.

(3) 本発明のバイオガスの生物脱硫装置は、下水の好気処理において固液分離処理で発生する余剰汚泥の嫌気性消化によって生成したバイオガスの脱硫を行うバイオガスの生物脱硫装置であって、内部に微生物を保持させた充填材が配置され，処理ガス及び排水を排出する生物脱硫塔と、この生物脱硫塔内で散水を行う散水装置と、下水の活性汚泥処理と固液分離処理を行う好気処理機構と、この好気処理機構の下流側に配置され，余剰汚泥が収容される余剰汚泥貯留槽と、この余剰汚泥貯留槽の下流側に配置された，余剰汚泥を好気性処理する嫌気性消化処理槽と、この嫌気性消化処理槽の下流側に配置された脱水装置とを具備し、脱水装置からの脱離液と好気処理機構からの好気処理水を前記散水装置に供給するとともに、嫌気性消化処理槽からのバイオガスを空気とともに生物脱硫塔に供給することを特徴とする。   (3) The biogas biodesulfurization apparatus of the present invention is a biogas biodesulfurization apparatus that desulfurizes biogas generated by anaerobic digestion of excess sludge generated in solid-liquid separation processing in aerobic treatment of sewage. In addition, a biodesulfurization tower in which a filler that holds microorganisms is placed and exhausts processing gas and wastewater, a watering device that sprinkles water in the biological desulfurization tower, activated sludge treatment and solid-liquid separation treatment of sewage An aerobic treatment mechanism that is disposed on the downstream side of the aerobic treatment mechanism, and an excess sludge storage tank that stores excess sludge, and an excess sludge that is disposed on the downstream side of the excess sludge storage tank. An anaerobic digestion treatment tank to be treated, and a dehydrator disposed downstream of the anaerobic digestion treatment tank, wherein the desorbed liquid from the dehydrator and the aerobic treated water from the aerobic treatment mechanism are sprayed. Anaerobic digestion treatment while supplying to the device The biogas from the tank is supplied to the biological desulfurization tower together with air.

(4) 本発明のバイオガスの生物脱硫装置は、下水の好気処理において固液分離処理で発生する余剰汚泥の嫌気性消化によって生成したバイオガスの脱硫を行うバイオガスの生物脱硫装置であって、内部に微生物を保持させた充填材が配置され，処理ガス及び排水を排出する生物脱硫塔と、この生物脱硫塔内で散水を行う散水装置と、下水の活性汚泥処理と固液分離処理を行う好気処理機構と、この好気処理機構の下流側に配置され，余剰汚泥が収容される余剰汚泥貯留槽と、この余剰汚泥貯留槽の下流側に配置された，余剰汚泥を好気性処理する嫌気性消化処理槽と、この嫌気性消化処理槽の下流側に配置された脱水装置とを具備し、脱水装置からの脱離液を前記散水装置に供給するとともに、嫌気性消化処理槽からのバイオガスを空気とともに生物脱硫塔に供給することを特徴とする。   (4) The biogas biodesulfurization apparatus of the present invention is a biogas biodesulfurization apparatus that desulfurizes biogas generated by anaerobic digestion of surplus sludge generated by solid-liquid separation in aerobic sewage treatment. In addition, a biodesulfurization tower in which a filler that holds microorganisms is placed and exhausts processing gas and wastewater, a watering device that sprinkles water in the biological desulfurization tower, activated sludge treatment and solid-liquid separation treatment of sewage An aerobic treatment mechanism that is disposed on the downstream side of the aerobic treatment mechanism, and an excess sludge storage tank that stores excess sludge, and an excess sludge that is disposed on the downstream side of the excess sludge storage tank. An anaerobic digestion treatment tank to be treated, and a dehydrator disposed downstream of the anaerobic digestion treatment tank, supplying the desorbed liquid from the dehydrator to the watering device, and an anaerobic digestion treatment tank With biogas from the air To the biological desulfurization tower.

本発明によれば、高い硫化水素除去性能を有し、低ランニングコストで安全運転が可能なバイオガスの生物脱硫装置を提供できる。また、本発明によれば、本発明の生物脱硫装置を採用する嫌気性消化処理を含む処理プロセス全体の運転及びランニングコストに悪影響を及ぼさないバイオガスの生物脱硫装置を提供できる。   ADVANTAGE OF THE INVENTION According to this invention, the biodesulfurization apparatus of the biogas which has a high hydrogen sulfide removal performance and can be operated safely at a low running cost can be provided. Moreover, according to this invention, the biodesulfurization apparatus of the biogas which does not have a bad influence on the driving | operation and running cost of the whole process including the anaerobic digestion process which employ | adopts the biodesulfurization apparatus of this invention can be provided.

本発明の実施形態に係るバイオガスの生物脱硫装置について、図面を参照して説明する。なお、本実施形態は下記に述べることに限定されない。
（第１の実施形態）：請求項１に対応
図１を参照する。図中の符番１１は、内部に微生物を保持させた充填材１２が配置された生物脱硫塔を示す。この生物脱硫塔１１内には、上部に散水を行う散水装置１３が配置され、下部にバイオガス供給装置１４が配置されている。前記生物脱硫塔１１のバイオガス供給装置１４には、生物脱硫塔１１にバイオガス１５を供給する嫌気性消化処理槽１６が接続されている。この嫌気性消化処理槽１６には有機性廃水１７が供給され、嫌気性消化処理槽１６からのバイオガス１５は空気１８とともにバイオガス供給装置１４に供給される。 A biogas biodesulfurization apparatus according to an embodiment of the present invention will be described with reference to the drawings. Note that the present embodiment is not limited to the following description.
(First Embodiment): Corresponding to Claim 1
Please refer to FIG. Reference numeral 11 in the figure indicates a biological desulfurization tower in which a filler 12 holding microorganisms is disposed. In the biological desulfurization tower 11, a sprinkler 13 for sprinkling water is disposed at the top, and a biogas supply device 14 is disposed at the bottom. An anaerobic digestion treatment tank 16 that supplies biogas 15 to the biological desulfurization tower 11 is connected to the biogas supply device 14 of the biological desulfurization tower 11. The organic waste water 17 is supplied to the anaerobic digestion treatment tank 16, and the biogas 15 from the anaerobic digestion treatment tank 16 is supplied to the biogas supply device 14 together with the air 18.

前記嫌気性消化処理槽１６の下流側には、活性汚泥処理槽１９と固液分離処理槽２０と散気装置２１からなる好気処理機構２２が配置されている。活性汚泥処理槽１９は、嫌気性消化処理槽１６からの硝化液２３を活性汚泥処理する機能を有している。固液分離処理槽２０は、活性汚泥処理槽１９からの廃水を好気処理水２４と返送汚泥２５とに分離する機能を有している。分離した返送汚泥２５は、固液分離処理槽２０の底部から活性汚泥処理槽１９に戻されて再度処理される。一方、好気処理水２４の一部は、生物脱硫塔１１の散水装置１３から散水される。生物脱硫塔１１では、上部から処理ガス２６が排出され、下部から排水２７が好気処理水２４とともに排水される。   An aerobic treatment mechanism 22 including an activated sludge treatment tank 19, a solid-liquid separation treatment tank 20, and an air diffuser 21 is disposed on the downstream side of the anaerobic digestion treatment tank 16. The activated sludge treatment tank 19 has a function of treating the nitrification liquid 23 from the anaerobic digestion treatment tank 16 with activated sludge. The solid-liquid separation treatment tank 20 has a function of separating the waste water from the activated sludge treatment tank 19 into the aerobic treatment water 24 and the return sludge 25. The separated return sludge 25 is returned to the activated sludge treatment tank 19 from the bottom of the solid-liquid separation treatment tank 20 and processed again. On the other hand, a part of the aerobic treated water 24 is sprinkled from the sprinkler 13 of the biological desulfurization tower 11. In the biological desulfurization tower 11, the processing gas 26 is discharged from the upper part, and the waste water 27 is discharged together with the aerobic processing water 24 from the lower part.

こうした構成のバイオガスの生物脱硫装置において、生物脱硫反応は生物脱硫塔１１に保持した充填材１２に担持した微生物によって生物脱硫塔１１内で行われる。充填材１２は、微生物が付着しやすく且つ比表面積が大きいものを用いる。これにより気液接触面積が確保でき、高い硫化水素除去性能が得られる。   In the biogas biodesulfurization apparatus having such a configuration, the biodesulfurization reaction is performed in the biodesulfurization tower 11 by the microorganisms supported on the filler 12 held in the biodesulfurization tower 11. The filler 12 is made of a material that easily adheres to microorganisms and has a large specific surface area. Thereby, a gas-liquid contact area can be secured and high hydrogen sulfide removal performance can be obtained.

また、微生物への水の供給には、図１に示すように固液分離処理槽２０を経た好気処理水２４を用いる。好気処理水２４を生物脱硫塔１１内に散水し、そのまま排出する、即ち循環せずに１パスで掛け流しする。好気処理水は、嫌気性消化後の硝化液を活性汚泥処理した後、固液分離処理した水であり、かつ有機物と固形物が除去された水であるので、次の特徴と機能を有する。   For supplying water to the microorganism, aerobic treated water 24 that has passed through the solid-liquid separation treatment tank 20 as shown in FIG. 1 is used. The aerobic treated water 24 is sprinkled into the biological desulfurization tower 11 and discharged as it is, that is, circulated in one pass without being circulated. The aerobic treated water is water that has been subjected to solid sludge treatment after activated sludge treatment of the nitrified liquid after anaerobic digestion, and has the following characteristics and functions because it is water from which organic substances and solids have been removed. .

1) 好気処理水２４には固形物がほとんど含まれていないため、好気処理水２４を生物脱硫塔１１内に散水することで、生物脱硫塔１１内の固形物の増加に寄与せず、かえって充填材１２の洗浄効果を有するので、充填材１２の目詰まりを防止できる。   1) Since the aerobic treated water 24 contains almost no solids, sprinkling the aerobic treated water 24 into the biological desulfurization tower 11 does not contribute to an increase in solids in the biological desulfurization tower 11. On the contrary, since the filler 12 has a cleaning effect, clogging of the filler 12 can be prevented.

2) 好気処理水２４は処理水として排出可能な水質となっている。従って、生物脱硫塔１１からの排水２７は、わずかに脱硫反応の生成物である硫黄や硫酸塩が増加するだけで、そのまま排出可能な水質を維持しており、廃棄物や追加の処理プロセスが不要で単純なプロセスにできる。また、嫌気性処理プロセスや好気処理プロセスへ影響しない。   2) The aerobic treated water 24 has a water quality that can be discharged as treated water. Accordingly, the waste water 27 from the biological desulfurization tower 11 maintains a water quality that can be discharged as it is, with only a slight increase in sulfur and sulfate, which are products of the desulfurization reaction. It can be an unnecessary and simple process. Moreover, it does not affect the anaerobic treatment process or the aerobic treatment process.

3) 好気処理水２４はある一定温度以上の水温がある。従って、好気処理水２４を生物脱硫塔１１内に散水することで、天候や既存設備の変動による気温の低下による生物脱硫塔１１内の温度の低下を防止できる。また、微生物は温度が低下すると活性が低下するため、微生物の活性低下による硫化水素除去性能の低下を防止できる。更に、保温に必要なエネルギーや保温設備が不要になり、低ランニングコストを実現できる。   3) The aerobic treated water 24 has a water temperature above a certain temperature. Therefore, by spraying the aerobic treated water 24 into the biological desulfurization tower 11, it is possible to prevent a decrease in temperature in the biological desulfurization tower 11 due to a decrease in temperature due to changes in weather or existing facilities. In addition, since the activity of microorganisms decreases as the temperature decreases, it is possible to prevent a decrease in hydrogen sulfide removal performance due to a decrease in the activity of microorganisms. Furthermore, energy and heat insulation equipment required for heat insulation are not required, and low running costs can be realized.

4) 好気処理水２４は活性汚泥や硝化液と比較して水質が安定しているため、脱硫処理の変動因子とならず安定運転が可能である。   4) Since the water quality of the aerobic treated water 24 is more stable than that of activated sludge and nitrification liquid, it can be operated stably without being a variable factor in the desulfurization treatment.

5) 生物脱硫塔１１内のｐＨ低下要因である，脱硫反応の生成物である硫酸が好気処理水２４に混合して排出されるため、生物脱硫塔１１内のｐＨが安定し、安置運転が可能となる。また、ｐＨを調整するためのアルカリ剤や付帯設備が不要となり、低ランニングコストにできる。   5) Since sulfuric acid, which is a product of the desulfurization reaction, which is a factor in lowering the pH in the biological desulfurization tower 11, is mixed with the aerobic treated water 24 and discharged, the pH in the biological desulfurization tower 11 is stabilized, and the detention operation Is possible. Moreover, an alkali agent and incidental equipment for adjusting the pH are not required, and the running cost can be reduced.

第１の実施形態によれば、活性汚泥や硝化液などの微生物を含んだ水と硫化水素を含むバイオガスを接触させるのではなく、微生物を生物脱硫塔１１内の充填材１２に保持し、固形物と有機物が除去された好気処理水２４を散水することで、高い硫化水素除去性能を維持でき、なおかつ安定運転が低ランニングコストで可能となる。   According to the first embodiment, instead of contacting water containing microorganisms such as activated sludge and nitrification liquid with biogas containing hydrogen sulfide, the microorganisms are held in the filler 12 in the biological desulfurization tower 11, By spraying the aerobic treated water 24 from which solids and organics have been removed, high hydrogen sulfide removal performance can be maintained, and stable operation can be achieved at a low running cost.

また、脱硫反応に必要な酸素は空気１８として供給し、まずバイオガス１５に空気１８を混合した後、生物脱硫塔１１に通気する。従って、容積が大きな生物脱硫塔１１に空気１８を直接通気する場合に比べ、容積が小さなバイオガスの配管に空気を供給することで、バイオガス１５と空気１８がよく混合されるため、気体の偏在による硫化水素除去性能の低下が抑制され、安定運転が可能となる。なお、供給する空気量はバイオガス１５に含まれる硫化水素濃度の最大値と酸化に必要な酸素量より算出でき、これを超える量を供給することで、必要酸素量の不足による硫化水素除去性能の低下が防止できる。   Further, oxygen necessary for the desulfurization reaction is supplied as air 18. First, the air 18 is mixed with the biogas 15, and then the air is passed through the biodesulfurization tower 11. Therefore, compared with the case where the air 18 is directly ventilated to the biological desulfurization tower 11 having a large volume, the biogas 15 and the air 18 are mixed well by supplying air to the biogas pipe having a small volume. A decrease in hydrogen sulfide removal performance due to uneven distribution is suppressed, and stable operation is possible. The amount of air to be supplied can be calculated from the maximum value of the hydrogen sulfide concentration contained in the biogas 15 and the amount of oxygen necessary for oxidation. By supplying an amount exceeding this, hydrogen sulfide removal performance due to a lack of the required amount of oxygen Can be prevented.

なお、第１の実施形態では、排水２７が好気処理水２４とともに排水される場合について述べたが、これに限らず、排水２７を好気処理水２４に返流させずに単独で排水してもよい。このことは他の実施形態の場合も同様である。   In the first embodiment, the case where the drainage 27 is drained together with the aerobic treated water 24 has been described. However, the present invention is not limited to this, and the drainage 27 is drained alone without being returned to the aerobic treated water 24. May be. The same applies to the other embodiments.

（第２の実施形態）：請求項２に対応
図２を参照する。但し、図１と同部材は同符番を付して説明を省略する。
本実施形態は、下水を好気処理し、その余剰汚泥を嫌気性消化処理する下水プロセスを示す。図中の符番３１は下水を示す。また、符番３２は余剰汚泥貯留槽を示し、好気処理機構２２の一部を構成する固液分離処理槽２０の下流側に配置されている。この余剰汚泥貯留槽３２には、固液分離処理槽２０から余剰汚泥３３が供給される。 (Second Embodiment): Corresponding to Claim 2
Please refer to FIG. However, the same members as those in FIG.
The present embodiment shows a sewage process in which sewage is subjected to an aerobic treatment and the excess sludge is subjected to an anaerobic digestion treatment. Reference numeral 31 in the figure indicates sewage. Reference numeral 32 denotes an excess sludge storage tank, which is arranged on the downstream side of the solid-liquid separation processing tank 20 constituting a part of the aerobic processing mechanism 22. The surplus sludge storage tank 32 is supplied with surplus sludge 33 from the solid-liquid separation treatment tank 20.

第２の実施形態によれば、下水３１を好気処理し、その余剰汚泥３３を嫌気性消化処理する下水プロセスにおいて、微生物を生物脱硫塔１１内の充填材１２に保持し、好気処理機構２２で余剰汚泥３３が除去された好気処理水２４を散水することで、高い硫化水素除去性能を維持でき、なおかつ安定運転が低ランニングコストで可能となる。また、第１の実施形態と同様、気体の偏在による硫化水素除去性能の低下が抑制され、安定運転が可能となる。   According to the second embodiment, in the sewage process in which the sewage 31 is subjected to an aerobic treatment and the surplus sludge 33 is subjected to an anaerobic digestion treatment, microorganisms are held in the filler 12 in the biological desulfurization tower 11 and the aerobic treatment mechanism. By spraying the aerobic treated water 24 from which the excess sludge 33 has been removed at 22, high hydrogen sulfide removal performance can be maintained, and stable operation can be achieved at a low running cost. Further, similarly to the first embodiment, the reduction in hydrogen sulfide removal performance due to the uneven distribution of gas is suppressed, and stable operation is possible.

（第３の実施形態）：請求項３に対応
図３を参照する。但し、図１，２と同部材は同符番を付して説明を省略する。
本実施形態は、下水を好気処理し、その余剰汚泥を嫌気性消化処理し、その硝化液を脱水する下水プロセスを示す。図３中の符番３４は、嫌気性消化処理槽１６の下流側に配置された脱水装置を示す。この脱水装置３４からは脱離液３５と脱水汚泥３６が排出される。ここで、脱離液３５とは脱水によって除去された水を示す。脱離液３５の一部と好気処理水２４は、混合されて散水装置１３から散水される。また、脱離液３５の残りは活性汚泥処理槽１９に戻される。
第３の実施形態によれば、第１の実施形態と同様な効果が得られる。また、脱離液３５の残りを活性汚泥処理槽１９に返流しているので、脱離液３５が低減でき、好気処理の与える影響を抑制でき、好気処理の安定運転が可能となる。 (Third embodiment): Corresponding to claim 3
Please refer to FIG. However, the same members as those in FIGS.
The present embodiment shows a sewage process in which sewage is subjected to an aerobic treatment, excess sludge is subjected to anaerobic digestion, and the nitrification liquid is dehydrated. A number 34 in FIG. 3 indicates a dehydrating device disposed on the downstream side of the anaerobic digestion tank 16. The dehydrating liquid 35 and the dehydrated sludge 36 are discharged from the dehydrator 34. Here, the desorbing liquid 35 refers to water removed by dehydration. A part of the desorbed liquid 35 and the aerobic treated water 24 are mixed and sprinkled from the sprinkler 13. Further, the remaining desorbed liquid 35 is returned to the activated sludge treatment tank 19.
According to the third embodiment, the same effect as in the first embodiment can be obtained. Further, since the remainder of the desorption liquid 35 is returned to the activated sludge treatment tank 19, the desorption liquid 35 can be reduced, the influence of the aerobic treatment can be suppressed, and a stable operation of the aerobic treatment can be performed. .

（第４の実施形態）：請求項４に対応
図４を参照する。但し、図１〜図３と同部材は同符番を付して説明を省略する。本実施形態は、下水を好気処理し、その余剰汚泥を嫌気性消化処理し、その硝化液を脱水する下水プロセスを示す。第４の実施形態では、第３の実施形態に対し、脱離液３５の一部を散水装置１３に供給するとともに、脱離液３５の残りと生物脱硫塔１１からの排水２７を活性汚泥処理槽１９へ供給する点が異なる。
第４の実施形態によれば、脱水が十分で脱離液が清澄な場合には、第３の実施形態と同様な効果が得られる。 (Fourth Embodiment): Corresponding to Claim 4
Please refer to FIG. However, the same members as those in FIGS. The present embodiment shows a sewage process in which sewage is subjected to an aerobic treatment, an excess sludge is subjected to an anaerobic digestion treatment, and the nitrification liquid is dehydrated. In the fourth embodiment, in contrast to the third embodiment, a part of the desorbed liquid 35 is supplied to the water sprinkler 13 and the remaining desorbed liquid 35 and the waste water 27 from the biological desulfurization tower 11 are treated with activated sludge. The point which supplies to the tank 19 differs.
According to the fourth embodiment, when the dehydration is sufficient and the desorbed liquid is clear, the same effect as the third embodiment can be obtained.

（第５の実施形態）：請求項５，６に対応
図６（Ａ），（Ｂ）を参照する。ここで、図６（Ａ）は生物脱硫塔の斜視図、図６（Ｂ）は生物脱硫塔の一構成である散水装置を生物脱硫塔の頂部から見た概略的な平面図を示す。但し、図１と同部材は同符番を付して説明を省略する。 (Fifth Embodiment): Corresponding to Claims 5 and 6
Reference is made to FIGS. Here, FIG. 6 (A) is a perspective view of the biological desulfurization tower, and FIG. 6 (B) is a schematic plan view of the watering device, which is one configuration of the biological desulfurization tower, as viewed from the top of the biological desulfurization tower. However, the same members as those in FIG.

第５の実施形態において、生物脱硫塔１１の外面形状は円筒形である。また、散水装置１３はシャワーノズルで、生物脱硫塔１１の頂部から見て点対称に配置されている。なお、図中の符番４１は、散水装置１３に連結する配管４２に介装された開閉バルブを示す。   In the fifth embodiment, the outer surface shape of the biological desulfurization tower 11 is a cylindrical shape. Further, the watering device 13 is a shower nozzle and is arranged point-symmetrically when viewed from the top of the biological desulfurization tower 11. In addition, the number 41 in a figure shows the opening-and-closing valve interposed by the piping 42 connected with the water sprinkler 13.

第５の実施形態によれば、生物脱硫塔１１の外面形状を円筒形とすることにより、充填材も円柱形となる。また、シャワーノズルを中心から点対称となるように配置することで、シャワーノズルから外面までの距離が均等になり充填材の濡れ状態が均一になる。従って、ガスの透過性や生成物の剥離等でバラツキが少なくなるとともに、充填材の全ての担体が脱硫に寄与できる。従って、生物脱硫装置の硫化水素の除去性能を長期にわたって高く安定させることができる。   According to the fifth embodiment, the outer surface shape of the biological desulfurization tower 11 is a cylindrical shape, so that the filler is also a cylindrical shape. Moreover, by arranging the shower nozzle so as to be point-symmetric from the center, the distance from the shower nozzle to the outer surface becomes uniform, and the wet state of the filler becomes uniform. Therefore, variations due to gas permeability and product peeling are reduced, and all the carrier of the filler can contribute to desulfurization. Therefore, the hydrogen sulfide removal performance of the biological desulfurization apparatus can be highly stabilized over a long period of time.

第５の実施形態では、散水装置（シャワーノズル）が１つである場合について述べたが、これに限定されない。例えば図７に示すように生物脱硫塔１１の頂部から見て２つの散水装置１３，１３が点対称に配置されていてもよい。また、例えば図８に示すように、生物脱硫塔１１の頂部から見て４つの散水装置１３が点対称に配置され、各散水装置１３が配管４２に介装された開閉バルブ４１により流量調整された構成にしてもよい。更に、図９（Ａ），（Ｂ），（Ｃ），（Ｄ）に示すように散水装置（シャワーノズル）１３が配置された構成にしてもよい。具体的には、図９（Ａ）はシャワーノズル１ヶ（散水機構）とシャワーノズル４ヶ（散水機構）を組み合わせたものである。図９（Ｂ）はシャワーノズル４ヶ（散水機構）とシャワーノズル１２ヶ（散水機構）の組み合わせ、図９（Ｂ）はシャワーノズル４ヶ（散水機構）とシャワーノズル４ヶ（散水機構）の組み合わせ、図９（Ｂ）はシャワーノズル４ヶ（散水機構）とシャワーノズル８ヶ（散水機構）の組み合わせである。   In the fifth embodiment, the case where there is one sprinkler (shower nozzle) is described, but the present invention is not limited to this. For example, as shown in FIG. 7, two sprinklers 13, 13 may be arranged point-symmetrically when viewed from the top of the biological desulfurization tower 11. For example, as shown in FIG. 8, four sprinklers 13 are arranged point-symmetrically when viewed from the top of the biological desulfurization tower 11, and the flow rate of each sprinkler 13 is adjusted by an open / close valve 41 interposed in a pipe 42. A configuration may be used. Furthermore, as shown to FIG. 9 (A), (B), (C), (D), you may make it the structure by which the watering apparatus (shower nozzle) 13 is arrange | positioned. Specifically, FIG. 9A is a combination of one shower nozzle (watering mechanism) and four shower nozzles (watering mechanism). 9B is a combination of 4 shower nozzles (watering mechanism) and 12 shower nozzles (watering mechanism), and FIG. 9B is a combination of 4 shower nozzles (watering mechanism) and 4 shower nozzles (watering mechanism). FIG. 9B shows a combination of 4 shower nozzles (watering mechanism) and 8 shower nozzles (watering mechanism).

なお、本発明は、上記実施形態そのままに限定されるものではなく、実施段階ではその要旨を逸脱しない範囲で構成要素を変形して具体化できる。また、上記実施形態に開示されている複数の構成要素の適宜な組み合せにより種々の発明を形成できる。例えば、実施形態に示される全構成要素から幾つかの構成要素を削除してもよい。更に、異なる実施形態に亘る構成要素を適宜組み合せてもよい。   Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

本発明の第１の実施形態に係るバイオガスの生物脱硫装置の概略構成図。The schematic block diagram of the biodesulfurization apparatus of the biogas which concerns on the 1st Embodiment of this invention. 本発明の第２の実施形態に係るバイオガスの生物脱硫装置の概略構成図。The schematic block diagram of the biodesulfurization apparatus of the biogas which concerns on the 2nd Embodiment of this invention. 本発明の第３の実施形態に係るバイオガスの生物脱硫装置の概略構成図。The schematic block diagram of the biodesulfurization apparatus of the biogas which concerns on the 3rd Embodiment of this invention. 本発明の第４の実施形態に係るバイオガスの生物脱硫装置の概略構成図。The schematic block diagram of the biodesulfurization apparatus of the biogas which concerns on the 4th Embodiment of this invention. 従来のバイオガスの生物脱硫装置の概略構成図。The schematic block diagram of the biodesulfurization apparatus of the conventional biogas. 本発明の第５の実施形態に係るバイオガスの生物脱硫装置の一構成である散水装置の説明図。Explanatory drawing of the watering apparatus which is one structure of the biodesulfurization apparatus of the biogas which concerns on the 5th Embodiment of this invention. 図６の散水装置とは異なる散水装置の説明図。Explanatory drawing of the watering apparatus different from the watering apparatus of FIG. 図６の散水装置とは異なる他の散水装置の説明図。Explanatory drawing of the other watering apparatus different from the watering apparatus of FIG. 図６の散水装置とは異なる他の散水装置の説明図。Explanatory drawing of the other watering apparatus different from the watering apparatus of FIG.

符号の説明Explanation of symbols

１１…生物脱硫塔、１２…充填材、１３…散水装置、１４…バイオガス供給装置、１５…バイオガス、１６…嫌気性消化処理槽、１７…有機性廃水、１８…空気、１９…活性汚泥処理槽、２０…固液分離処理槽、２１…散気装置、２２…好気処理機構、２３…硝化液、２４…好気処理水、２５…返送汚泥、２６…処理ガス、３１…下水、３２…余剰汚泥貯留槽、３３…余剰汚泥、３４…脱水装置、３５…脱離液、３６…脱水汚泥、４１…開閉バルブ、４２…開閉バルブ。   DESCRIPTION OF SYMBOLS 11 ... Biodesulfurization tower, 12 ... Filler, 13 ... Sprinkling device, 14 ... Biogas supply device, 15 ... Biogas, 16 ... Anaerobic digestion treatment tank, 17 ... Organic waste water, 18 ... Air, 19 ... Activated sludge Treatment tank, 20 ... Solid-liquid separation treatment tank, 21 ... Aeration device, 22 ... Aerobic treatment mechanism, 23 ... Nitrification liquid, 24 ... Aerobic treatment water, 25 ... Return sludge, 26 ... Treatment gas, 31 ... Sewage, 32 ... Excess sludge storage tank, 33 ... Excess sludge, 34 ... Dehydration device, 35 ... Desorbed liquid, 36 ... Dehydrated sludge, 41 ... Open / close valve, 42 ... Open / close valve.

Claims (6)

有機性廃水の嫌気性消化によって生成したバイオガスの脱硫を行うバイオガスの生物脱硫装置であって、
内部に微生物を保持させた充填材が配置され，処理ガス及び排水を排出する生物脱硫塔と、この生物脱硫塔内で散水を行う散水装置と、有機性廃水を嫌気性消化処理する嫌気性消化処理槽と、この嫌気性消化処理槽の下流側に配置された，活性汚泥処理と固液分離処理を行う好気処理機構とを具備し、
好気処理機構からの好気処理水を前記散水装置に供給するとともに、嫌気性消化処理槽からのバイオガスを空気とともに生物脱硫塔に供給することを特徴とするバイオガスの生物脱硫装置。 A biogas biodesulfurization device that desulfurizes biogas produced by anaerobic digestion of organic wastewater,
A bio-desulfurization tower with a filler that holds microorganisms inside and discharges treatment gas and waste water, a watering device that sprinkles water in the bio-desulfurization tower, and anaerobic digestion that treats organic wastewater with anaerobic digestion A treatment tank and an aerobic treatment mechanism arranged on the downstream side of the anaerobic digestion treatment tank for performing activated sludge treatment and solid-liquid separation treatment;
A biogas biodesulfurization apparatus characterized by supplying aerobic treatment water from an aerobic treatment mechanism to the water sprinkler and supplying biogas from an anaerobic digestion tank together with air to a biodesulfurization tower. 下水の好気処理において固液分離処理で発生する余剰汚泥の嫌気性消化によって生成したバイオガスの脱硫を行うバイオガスの生物脱硫装置であって、
内部に微生物を保持させた充填材が配置され，処理ガス及び排水を排出する生物脱硫塔と、この生物脱硫塔内で散水を行う散水装置と、下水の活性汚泥処理と固液分離処理を行う好気処理機構と、この好気処理機構の下流側に配置された，余剰汚泥が収容される余剰汚泥貯留槽と、この余剰汚泥貯留槽の下流側に配置された，余剰汚泥を好気性処理する嫌気性消化処理槽とを具備し、
好気処理機構からの好気処理水を前記散水装置に供給するとともに、嫌気性消化処理槽からのバイオガスを空気とともに生物脱硫塔に供給することを特徴とするバイオガスの生物脱硫装置。 A biogas biodesulfurization device that desulfurizes biogas generated by anaerobic digestion of excess sludge generated by solid-liquid separation treatment in aerobic treatment of sewage,
A bio-desulfurization tower that contains microorganisms inside and discharges process gas and wastewater, a sprinkler that sprinkles water in the bio-desulfurization tower, activated sludge treatment and solid-liquid separation treatment of sewage An aerobic treatment mechanism, an excess sludge storage tank for storing excess sludge disposed on the downstream side of the aerobic treatment mechanism, and an excess sludge disposed on the downstream side of the excess sludge storage tank An anaerobic digestion treatment tank,
A biogas biodesulfurization apparatus characterized by supplying aerobic treatment water from an aerobic treatment mechanism to the water sprinkler and supplying biogas from an anaerobic digestion tank together with air to a biodesulfurization tower. 下水の好気処理において固液分離処理で発生する余剰汚泥の嫌気性消化によって生成したバイオガスの脱硫を行うバイオガスの生物脱硫装置であって、
内部に微生物を保持させた充填材が配置され，処理ガス及び排水を排出する生物脱硫塔と、この生物脱硫塔内で散水を行う散水装置と、下水の活性汚泥処理と固液分離処理を行う好気処理機構と、この好気処理機構の下流側に配置され，余剰汚泥が収容される余剰汚泥貯留槽と、この余剰汚泥貯留槽の下流側に配置された，余剰汚泥を好気性処理する嫌気性消化処理槽と、この嫌気性消化処理槽の下流側に配置された脱水装置とを具備し、
脱水装置からの脱離液と好気処理機構からの好気処理水を前記散水装置に供給するとともに、嫌気性消化処理槽からのバイオガスを空気とともに生物脱硫塔に供給することを特徴とするバイオガスの生物脱硫装置。 A biogas biodesulfurization device that desulfurizes biogas generated by anaerobic digestion of excess sludge generated by solid-liquid separation treatment in aerobic treatment of sewage,
A bio-desulfurization tower that contains microorganisms inside and discharges process gas and wastewater, a sprinkler that sprinkles water in the bio-desulfurization tower, activated sludge treatment and solid-liquid separation treatment of sewage An aerobic treatment mechanism, an excess sludge storage tank disposed on the downstream side of the aerobic treatment mechanism and storing excess sludge, and an excess sludge disposed on the downstream side of the excess sludge storage tank are aerobically treated. Comprising an anaerobic digestion treatment tank and a dehydrator disposed downstream of the anaerobic digestion treatment tank,
The desorbed liquid from the dehydrator and the aerobic treated water from the aerobic treatment mechanism are supplied to the sprinkler, and the biogas from the anaerobic digestion tank is supplied to the biological desulfurization tower together with air. Biogas biodesulfurization equipment. 下水の好気処理において固液分離処理で発生する余剰汚泥の嫌気性消化によって生成したバイオガスの脱硫を行うバイオガスの生物脱硫装置であって、
内部に微生物を保持させた充填材が配置され，処理ガス及び排水を排出する生物脱硫塔と、この生物脱硫塔内で散水を行う散水装置と、下水の活性汚泥処理と固液分離処理を行う好気処理機構と、この好気処理機構の下流側に配置され，余剰汚泥が収容される余剰汚泥貯留槽と、この余剰汚泥貯留槽の下流側に配置された，余剰汚泥を好気性処理する嫌気性消化処理槽と、この嫌気性消化処理槽の下流側に配置された脱水装置とを具備し、
脱水装置からの脱離液を前記散水装置に供給するとともに、嫌気性消化処理槽からのバイオガスを空気とともに生物脱硫塔に供給することを特徴とするバイオガスの生物脱硫装置。 A biogas biodesulfurization device that desulfurizes biogas generated by anaerobic digestion of excess sludge generated by solid-liquid separation treatment in aerobic treatment of sewage,
A bio-desulfurization tower that contains microorganisms inside and discharges process gas and wastewater, a sprinkler that sprinkles water in the bio-desulfurization tower, activated sludge treatment and solid-liquid separation treatment of sewage An aerobic treatment mechanism, an excess sludge storage tank disposed on the downstream side of the aerobic treatment mechanism and storing excess sludge, and an excess sludge disposed on the downstream side of the excess sludge storage tank are aerobically treated. Comprising an anaerobic digestion treatment tank and a dehydrator disposed downstream of the anaerobic digestion treatment tank,
A biogas biodesulfurization apparatus characterized in that a desorption liquid from a dehydration apparatus is supplied to the water sprinkling apparatus, and biogas from an anaerobic digestion treatment tank is supplied together with air to a biodesulfurization tower. 前記生物脱硫塔の外面形状は円筒状であり、前記散水装置は１つ以上のシャワーノズルで生物脱硫塔の頂部から見て点対称に配置されていることを特徴とする請求項１乃至４いずれか一記載のバイオガスの生物脱硫装置。 The outer shape of the biological desulfurization tower is cylindrical, and the watering device is arranged point-symmetrically by one or more shower nozzles when viewed from the top of the biological desulfurization tower. A biogas desulfurization apparatus according to claim 1. 前記散水装置は２以上のシャワーノズルであり、これらのシャワーノズルから散水される水の量を調節するバルブを備えていることを特徴とする請求項５記載のバイオガスの生物脱硫装置。 6. The biogas biodesulfurization apparatus according to claim 5, wherein the water spraying apparatus includes two or more shower nozzles, and includes a valve for adjusting the amount of water sprayed from the shower nozzles.
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010215735A (en) * 2009-03-13 2010-09-30 Yanmar Co Ltd Desulfurizer
CN101870895A (en) * 2010-06-04 2010-10-27 北京昊业怡生科技有限公司 Production method of solid methane
JP2011189286A (en) * 2010-03-15 2011-09-29 Toshiba Corp Water treatment system for organic wastewater
JP2011212622A (en) * 2010-04-01 2011-10-27 Toshiba Corp Apparatus and method for treating waste water
JP2012201763A (en) * 2011-03-24 2012-10-22 Yanmar Co Ltd Cleaning method of purification system
US20120270307A1 (en) * 2011-04-21 2012-10-25 Beijing Helee Bio-Energy Technology Co., Ltd. Biogas desulfurization device
CN105233631A (en) * 2015-11-10 2016-01-13 环境保护部华南环境科学研究所 Oil-in-water type emulsion preparing method and application of oil-in-water type emulsion in organic waste gas treatment
CN112794596A (en) * 2020-12-24 2021-05-14 湖南军信环保股份有限公司 Sludge-water separation type sludge anaerobic digestion treatment system and method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01317524A (en) * 1988-06-16 1989-12-22 Nkk Corp Washing method in gas deodorization device
JPH0568849A (en) * 1991-09-18 1993-03-23 Kurita Water Ind Ltd Method and device for desulfurizing digestion gas
JP2002079034A (en) * 2000-09-08 2002-03-19 Kurita Water Ind Ltd Biological desulfurization method and apparatus
JP2003305328A (en) * 2001-11-02 2003-10-28 Jfe Engineering Kk Desulfurization equipment for digestion gas and desulfurization method
JP2004000941A (en) * 2002-04-18 2004-01-08 Ebara Corp Treatment method for organic wastewater or sludge and treatment apparatus therefor
JP2005058841A (en) * 2003-08-20 2005-03-10 Mitsui Eng & Shipbuild Co Ltd Desulfurization apparatus and desulfurization method
JP2006143781A (en) * 2004-11-16 2006-06-08 Toshiba Corp Biogas purification system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01317524A (en) * 1988-06-16 1989-12-22 Nkk Corp Washing method in gas deodorization device
JPH0568849A (en) * 1991-09-18 1993-03-23 Kurita Water Ind Ltd Method and device for desulfurizing digestion gas
JP2002079034A (en) * 2000-09-08 2002-03-19 Kurita Water Ind Ltd Biological desulfurization method and apparatus
JP2003305328A (en) * 2001-11-02 2003-10-28 Jfe Engineering Kk Desulfurization equipment for digestion gas and desulfurization method
JP2004000941A (en) * 2002-04-18 2004-01-08 Ebara Corp Treatment method for organic wastewater or sludge and treatment apparatus therefor
JP2005058841A (en) * 2003-08-20 2005-03-10 Mitsui Eng & Shipbuild Co Ltd Desulfurization apparatus and desulfurization method
JP2006143781A (en) * 2004-11-16 2006-06-08 Toshiba Corp Biogas purification system

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010215735A (en) * 2009-03-13 2010-09-30 Yanmar Co Ltd Desulfurizer
JP2011189286A (en) * 2010-03-15 2011-09-29 Toshiba Corp Water treatment system for organic wastewater
JP2011212622A (en) * 2010-04-01 2011-10-27 Toshiba Corp Apparatus and method for treating waste water
CN101870895A (en) * 2010-06-04 2010-10-27 北京昊业怡生科技有限公司 Production method of solid methane
JP2012201763A (en) * 2011-03-24 2012-10-22 Yanmar Co Ltd Cleaning method of purification system
US20120270307A1 (en) * 2011-04-21 2012-10-25 Beijing Helee Bio-Energy Technology Co., Ltd. Biogas desulfurization device
US8846381B2 (en) * 2011-04-21 2014-09-30 Beijing Helee Bio-Energy Technology Co., Ltd. Biogas desulfurization device
CN105233631A (en) * 2015-11-10 2016-01-13 环境保护部华南环境科学研究所 Oil-in-water type emulsion preparing method and application of oil-in-water type emulsion in organic waste gas treatment
CN112794596A (en) * 2020-12-24 2021-05-14 湖南军信环保股份有限公司 Sludge-water separation type sludge anaerobic digestion treatment system and method
CN112794596B (en) * 2020-12-24 2023-06-09 湖南军信环保股份有限公司 Sludge anaerobic digestion treatment system and method for sludge-water separation

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