JPH05123527A - Method for deodorizing exhaust gas and apparatus therefor - Google Patents

Method for deodorizing exhaust gas and apparatus therefor

Info

Publication number
JPH05123527A
JPH05123527A JP3204673A JP20467391A JPH05123527A JP H05123527 A JPH05123527 A JP H05123527A JP 3204673 A JP3204673 A JP 3204673A JP 20467391 A JP20467391 A JP 20467391A JP H05123527 A JPH05123527 A JP H05123527A
Authority
JP
Japan
Prior art keywords
exhaust gas
deodorizing
suspension
immobilized microorganisms
drying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP3204673A
Other languages
Japanese (ja)
Other versions
JP2575974B2 (en
Inventor
Kazunori Nakamura
和憲 中村
Norio Futai
則夫 風袋
Kozo Nagai
弘三 永易
Shuichiro Hatakeyama
修一郎 畠山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kawasaki Heavy Industries Ltd
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
Kawasaki Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Agency of Industrial Science and Technology, Kawasaki Heavy Industries Ltd filed Critical Agency of Industrial Science and Technology
Priority to JP3204673A priority Critical patent/JP2575974B2/en
Publication of JPH05123527A publication Critical patent/JPH05123527A/en
Application granted granted Critical
Publication of JP2575974B2 publication Critical patent/JP2575974B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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

Abstract

PURPOSE:To efficiently deodorize exhaust gas containing an offensive small component by a method wherein excessive sludge formed at the time of the biological treatment of waste water is filtered and dehydrated to form a cake and this cake is dried to obtain immobilized bacteria, which are, in turn, suspended in a liquid to form a suspension, and the exhaust gas containing the offensive smell component is introduced into the suspension to be brought into contact with the bacteria. CONSTITUTION:Excessive sludge formed at the time of the biological treatment of waste water is filtered and dehydrated to form a cake with moisture content of 90wt.% or less and this cake is dried at 70 deg.C or lower to obtain immobilized bacteria, which are, in turn, suspended in a liquid to form a suspension. Exhaust gas containing an offensive smell component is introduced into the suspension through an introducing pipe 14 to be brought into contact with the bacteria to adsorb and decompose the offensive smell component. As a result, the exhaust gas containing the offensive small component can be efficiently deodorized.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、生活廃水や工場廃水を
好気性処理又は嫌気性処理する際に生成する余剰汚泥か
ら得た固定化微生物を、脱臭剤として用いて、臭気成分
を含む排ガスを効率よく脱臭する方法及びその装置に関
するものである。BACKGROUND OF THE INVENTION The present invention relates to an exhaust gas containing an odor component by using, as a deodorant, immobilized microorganisms obtained from excess sludge produced when aerial or anaerobic treatment of domestic wastewater and industrial wastewater. TECHNICAL FIELD The present invention relates to a method and an apparatus for efficiently deodorizing oil.

【０００２】[0002]

【従来の技術】従来から、汚泥を用いて臭気成分を含む
排ガスを脱臭する方法が知られている。例えば、特開昭
５８−１８６４１８号公報には、特殊なノズルで活性汚
泥スラリーを噴霧し、含臭空気と気液接触させて脱臭す
る方法が記載されている。また、特公昭５７−５２０６
６号公報には、廃水の生物学的処理において生じる汚泥
中の菌体を、多腔性の粉末状物質を主体とする培地に吸
着固定させてなる脱臭剤が記載されている。また、この
公報には、汚泥と多腔性の粉末状物質及び栄養源を加え
て混合した後、室温放置、真空乾燥又は３０〜６０℃の
加温送風で乾燥して、含水率７〜１５％の脱臭剤を製造
する方法が記載されている。さらに、特開昭６４−２５
６９号公報には、培養により、又は自然界より採取され
た微生物を約７０℃以下の温度で脱水し、固形形状のま
ま乾燥し、水分含有量を８５％以下に調整された固定化
微生物を得る方法及びその反応方法が記載されている。2. Description of the Related Art Conventionally, there has been known a method of deodorizing exhaust gas containing odorous components using sludge. For example, JP-A-58-186418 discloses a method of deodorizing activated sludge slurry by spraying it with a special nozzle and bringing it into gas-liquid contact with odorous air. In addition, Japanese Patent Publication No. 57-5206
No. 6 discloses a deodorant obtained by adsorbing and fixing the bacterial cells in sludge generated in biological treatment of wastewater to a medium mainly composed of a multi-cavity powdery substance. In addition, in this publication, sludge, a multi-cavity powdery substance and a nutrient source are added and mixed, and then left to stand at room temperature, vacuum dried or dried by warm air blowing at 30 to 60 ° C. to obtain a water content of 7 to 15 A method of making a% deodorant is described. Furthermore, JP-A-64-25
In Japanese Patent Publication No. 69, microorganisms collected by culture or from nature are dehydrated at a temperature of about 70 ° C. or lower, and dried in a solid form to obtain immobilized microorganisms having a water content adjusted to 85% or lower. A method and its reaction method are described.

【０００３】[0003]

【発明が解決しようとする課題】しかし、これらの従来
技術の内、特公昭５７−５２０６６号公報記載の方法
は、つぎのような問題点を有している。 （１） 充分な強度を有する固定化微生物を作製するこ
とが困難であり、粉末散布方式又は液中分散方式として
の使用しかできなかった。 （２） 多腔体を混合することを特徴としているため、
この混合工程が必要であり、固定化微生物の製造コスト
が高くなっていた。 （３） 各種栄養源を添加しているため、余剰汚泥の一
次発酵が生じ、コンポストに近いものとなり、低温域の
有用菌体の一部が消失する可能性があった。 （４） 長期間連続使用する方策がとりにくく、使い捨
ての使用方法であった。また、使用当初に発熱反応を生
ずる恐れがあった。さらに、水分管理を充分に実施しな
いと、保存性が極めて悪かった。また、特開昭５８−１
８６４１８号公報記載の方法は、ノズルの目詰まり等の
問題があり、特開昭６４−２５６９号公報記載の方法
は、脱臭を目的としていなく、乾燥前の整形も実施して
いない。本発明は、上記の諸点に鑑みなされたもので、
余剰汚泥を低温で乾燥し、必要に応じて、破砕・分粒し
て高い強度を有する固定化微生物を得、この固定化微生
物を用いて、懸濁方式又は充填方式により効率よく、し
かも再生も可能に、排ガスを脱臭することができる方法
及び装置を提供することを目的とするものである。However, among these conventional techniques, the method described in Japanese Patent Publication No. 57-52066 has the following problems. (1) It is difficult to produce an immobilized microorganism having sufficient strength, and it can only be used as a powder spraying method or a liquid dispersion method. (2) Since it is characterized by mixing multi-lumen bodies,
This mixing step was necessary, and the production cost of the immobilized microorganism was high. (3) Since various nutrient sources are added, the primary fermentation of excess sludge occurs and it becomes close to compost, and there is a possibility that a part of useful bacteria in the low temperature range may disappear. (4) It was difficult to take a measure for continuous use for a long period of time, and it was a disposable use method. Moreover, there is a possibility that an exothermic reaction may occur at the beginning of use. Furthermore, if the water content is not adequately controlled, the storability is extremely poor. In addition, JP-A-58-1
The method described in Japanese Patent No. 86418 has problems such as nozzle clogging, and the method described in Japanese Patent Application Laid-Open No. 64-2569 does not aim at deodorization and does not perform shaping before drying. The present invention has been made in view of the above points,
The excess sludge is dried at a low temperature, and if necessary, crushed and sized to obtain immobilized microorganisms with high strength, and the immobilized microorganisms can be efficiently regenerated by a suspension method or a filling method and can be regenerated. It is an object of the present invention to provide a method and an apparatus capable of deodorizing exhaust gas as much as possible.

【０００４】[0004]

【課題を解決するための手段及び作用】上記の目的を達
成するために、本発明の排ガスの脱臭方法は、廃水を生
物学的処理する際に生成する余剰汚泥を、水分含有量９
０重量％以下にろ過脱水してケーキ状にした後、７０℃
以下の温度で乾燥させて得た固定化微生物と、臭気成分
を含む排ガスとを、該固定化微生物を液中に懸濁させた
懸濁液中に排ガスを導入することにより接触させて、臭
気成分を吸着・分解処理することを特徴としている。上
記の方法において、固定化微生物を液中に懸濁させた懸
濁液中に排ガスを導入する代わりに、固定化微生物の充
填層に排ガスを導入してもよい。また、脱水ケーキの乾
燥物を破砕・分粒して固定化微生物としたり、脱水ケー
キを必要な形態に整形した後、乾燥させたり、脱臭対象
に近い成分を含む廃水を処理した余剰汚泥を用いたり、
悪臭成分分解能の高い菌体を、予め余剰汚泥に混合した
りすることも有効である。そして、上記の方法におい
て、固定化微生物を水洗し、悪臭物質分解生成物を除去
することにより、脱臭能力を再生することができる。In order to achieve the above object, the method for deodorizing exhaust gas according to the present invention uses an excess sludge produced when biologically treating wastewater to obtain a water content of 9%.
After filtering and dehydrating to 0% by weight or less to form a cake, 70 ° C
Immobilized microorganisms obtained by drying at the following temperature and exhaust gas containing an odorous component are brought into contact by introducing exhaust gas into a suspension obtained by suspending the immobilized microorganisms in a liquid to give an odor. It is characterized by adsorbing and decomposing components. In the above method, instead of introducing the exhaust gas into the suspension obtained by suspending the immobilized microorganisms in the liquid, the exhaust gas may be introduced into the packed bed of the immobilized microorganisms. In addition, excess sludge obtained by crushing and sizing the dried product of the dehydrated cake to form immobilized microorganisms, shaping the dehydrated cake into the required form and then drying it, or treating wastewater containing components close to the target of deodorization is used. Or
It is also effective to previously mix the bacterial cells having a high odor component decomposing ability with the excess sludge. Then, in the above method, the deodorizing ability can be regenerated by washing the immobilized microorganisms with water to remove the decomposition products of the malodorous substances.

【０００５】本発明の排ガスの脱臭装置は、懸濁方式の
場合は、図１に示すように、本体１０内に、余剰汚泥を
乾燥させて得た固定化微生物を液中に懸濁させた懸濁液
１２を満たし、本体１０内の懸濁液中に有臭ガス導入管
１４の一端を位置させ、本体１０内の気相部１６に脱臭
ガス導出管１８を接続したことを特徴としている。長期
間処理を継続する場合、懸濁方式においては、定期的に
液を交換することにより処理能力の再生を図る。この場
合、液中へ蓄積した分解生成物が取り除かれる。また、
本発明の装置は、充填方式の場合は、図２に示すよう
に、一端に有臭ガス入口２０を有し、他端に脱臭ガス出
口２２を有する本体２４内に、余剰汚泥を乾燥させて得
た固定化微生物の充填層２６を設けたことを特徴として
いる。２８はバーミキュライト層、３０は多孔板であ
る。処理開始時には固定化微生物を水で膨潤させた後、
処理を開始するが、長期間処理を継続する場合、充填方
式においては、充填層を水洗することにより処理能力の
再生を図る。In the case of the suspension system of the exhaust gas deodorizing apparatus of the present invention, as shown in FIG. 1, the immobilized microorganisms obtained by drying the excess sludge are suspended in the liquid in the main body 10. It is characterized in that the suspension 12 is filled, one end of the odorous gas introducing pipe 14 is positioned in the suspension in the main body 10, and the deodorizing gas outlet pipe 18 is connected to the gas phase portion 16 in the main body 10. .. When the treatment is continued for a long period of time, in the suspension method, the treatment capacity is regenerated by regularly exchanging the liquid. In this case, the decomposition products accumulated in the liquid are removed. Also,
In the case of the filling method, the apparatus of the present invention, as shown in FIG. 2, dries excess sludge into a main body 24 having an odorous gas inlet 20 at one end and a deodorant gas outlet 22 at the other end. It is characterized in that a packing layer 26 of the obtained immobilized microorganisms is provided. 28 is a vermiculite layer and 30 is a perforated plate. After swelling the immobilized microorganisms with water at the start of treatment,
When the treatment is started but the treatment is continued for a long time, in the filling method, the filling capacity is washed to regenerate the treatment capacity.

【０００６】生物学的排水処理場の余剰汚泥を、何者も
混合することなくろ過脱水し、水分含有量を８５重量％
程度のケーキ状にし、それを、その形状のまま、又はあ
る程度整形し、７０℃〜室温、望ましくは５０℃〜室温
の温度で乾燥することで、水分含有量を１０重量％前後
にまで下げる。乾燥方法は、加温通風乾燥、放置乾燥、
真空乾燥などを採用する。乾燥物は、必要ならば５mm以
下に破砕し、３〜５mmにふるいで分粒する。この乾燥物
を水にて湿らせた後、充填塔に充填し、空間速度ＳＶ＝
１０〜１０００[hr-1]で悪臭ガスと接触させる。悪臭ガ
スは、乾燥している場合は、加湿した状態で通気する。
そして、脱臭能力の再生は、乾燥汚泥を水洗することで
行なう。Excess sludge from a biological wastewater treatment plant is filtered and dehydrated without being mixed by anyone to obtain a water content of 85% by weight.
The water content is reduced to about 10% by weight by making it into a cake form of a certain degree, shaping it to its shape or to some extent, and drying at a temperature of 70 ° C. to room temperature, preferably 50 ° C. to room temperature. The drying method is heated ventilation drying, standing drying,
Use vacuum drying. The dried product is crushed to 5 mm or less if necessary, and sieved to 3 to 5 mm for sizing. The dried product was moistened with water and then packed in a packed tower, and the space velocity SV =
It is brought into contact with a malodorous gas for 10 to 1000 [hr -1 ]. The malodorous gas is ventilated in a humidified state when it is dry.
The deodorizing ability is regenerated by washing the dried sludge with water.

【０００７】[0007]

【実施例】以下、本発明の実施例について説明する。 実施例１ 出願人会社内生活廃水を活性汚泥法で処理する際に生成
した沈降汚泥を、３０℃で２日間通風乾燥した後、破砕
して粒径３〜５mmの破砕片に分粒して固定化微生物片を
得た。この固定化微生物片（乾燥汚泥）１０gを、１０m
Mリン酸バッファー２５０mlに添加し、懸濁させて吸収
液（懸濁液）３２を調製した。この懸濁液３２を、図３
に示すように、複数のガラス製ガス洗浄びん３４（容
量：１個当たり約５００ml）に半分よりやや大目に入
れ、悪臭ガスを５〜２０ml/min（全体の量）の割合で通
気（バブリング）させた。悪臭ガスは次のようにして調
製した。すなわち、コンプレッサ３６出口のライン３８
に硫化水素（Ｈ2Ｓ）ボンベ４０及びメチルメルカプタ
ン（ＭＭ）ボンベ４２を接続し、さらにこのライン３８
に密閉容器４４を接続し、この密閉容器４４内に、各種
の悪臭液体をそれぞれ充填した複数の開放びん４６をシ
リコンセプタムで栓をした後収納し、密閉容器４４出口
のサンプリング口４８からのガス性状が、 硫化水素（Ｈ2Ｓ） ４０〜７０ppm メチルメルカプタン（ＭＭ） ３０〜６０ppm 硫化メチル（ＤＭＳ） １０〜２０ppm プロピオン酸 １０〜３０ppm ｎ‐酪酸 １０〜３０ppm ｉ‐吉草酸 １０〜２０ppm ｎ‐吉草酸 １０〜２０ppm アンモニア及びトリメチルアミン ２０〜２５ppm となるようにした。５０は流量計、５２は電磁弁、５４
は洗浄びん出口のサンプリング口である。この実験の結
果は、図４に示す如くであった。図４は、Ｈ2Ｓ、Ｍ
Ｍ、プロピオン酸、ＤＭＳについて、処理日数［日］と
除去率［％］との関係を示している。なお、上記成分以
外は、すべてほぼ１００％に近い除去率を得た。EXAMPLES Examples of the present invention will be described below. Example 1 The settled sludge generated when the domestic wastewater in the applicant company was treated by the activated sludge method was dried by ventilation at 30 ° C. for 2 days, and then crushed to be sized into crushed pieces having a particle size of 3 to 5 mm. An immobilized microbial fragment was obtained. 10m of this immobilized microbial fragment (dry sludge)
An absorption liquid (suspension) 32 was prepared by adding 250 ml of M phosphate buffer and suspending it. This suspension 32 is shown in FIG.
As shown in, put a little more than half into a plurality of glass gas washing bottles 34 (capacity: about 500 ml per bottle) and ventilate (bubble) the malodorous gas at a rate of 5 to 20 ml / min (total amount). I was allowed to. The malodorous gas was prepared as follows. That is, the line 38 at the outlet of the compressor 36
A hydrogen sulfide (H 2 S) cylinder 40 and a methyl mercaptan (MM) cylinder 42 are connected to the line 38 and the line 38
A closed container 44 is connected to the closed container 44, and a plurality of open bottles 46 filled with various malodorous liquids are plugged with a silicon septum and then stored, and the gas from the sampling port 48 at the outlet of the closed container 44 is stored. The property is hydrogen sulfide (H 2 S) 40 to 70 ppm Methyl mercaptan (MM) 30 to 60 ppm Methyl sulfide (DMS) 10 to 20 ppm Propionic acid 10 to 30 ppm n-butyric acid 10 to 30 ppm i-Valeric acid 10 to 20 ppm n-yoshi Herbic acid 10 to 20 ppm Ammonia and trimethylamine 20 to 25 ppm. 50 is a flow meter, 52 is a solenoid valve, 54
Is a sampling port at the outlet of the washing bottle. The results of this experiment were as shown in FIG. FIG. 4 shows H 2 S, M
The relationship between the treatment days [days] and the removal rate [%] is shown for M, propionic acid, and DMS. In addition, except for the above components, removal rates close to 100% were obtained.

【０００８】実施例２ 実施例１と同じ固定化微生物片約２５０mlを、図２に示
す充填槽に充填した。充填槽の本体２４はアクリル樹脂
製の円筒形で、槽高さＨ３＝２００mm、固定化微生物充
填層（乾燥汚泥層）高さＨ１＝１００mm、バーミキュラ
イト層高さＨ２＝５０mm、円筒（本体）の内径Ｄ＝６０
mmであった。そして、実施例１と同じガス組成の悪臭ガ
スを、２０ml/min（空間速度ＳＶ＝約４hr-1）の割合で
通気させた。この実験の結果は、図５に示す如くであっ
た。図５は、Ｈ2Ｓ、ＭＭ、ＤＭＳ、プロピオン酸につ
いて、処理日数［日］と除去率［％］との関係を示して
いる。なお、上記成分以外は、すべてほぼ１００％に近
い除去率を得た。Example 2 About 250 ml of the same immobilized microbial fragments as in Example 1 was filled in the filling tank shown in FIG. The main body 24 of the filling tank is a cylinder made of acrylic resin, and has a tank height H3 = 200 mm, an immobilized microbial filling layer (dry sludge layer) height H1 = 100 mm, a vermiculite layer height H2 = 50 mm, and a cylinder (main body). Inner diameter D = 60
It was mm. Then, a malodorous gas having the same gas composition as in Example 1 was aerated at a rate of 20 ml / min (space velocity SV = about 4 hr −1 ). The results of this experiment were as shown in FIG. FIG. 5 shows the relationship between the treatment days [days] and the removal rate [%] for H 2 S, MM, DMS, and propionic acid. In addition, except for the above components, removal rates close to 100% were obtained.

【０００９】[0009]

【発明の効果】本発明は、上記のように構成されている
ので、つぎのような効果を奏する。 （１） 本発明において用いる固定化微生物からなる脱
臭剤は、余剰汚泥のみからなる乾燥体であるため、微生
物の充填密度を高く維持することができ、排ガスの脱臭
を効率よく行なうことができる。 （２） 本発明において用いる固定化微生物からなる脱
臭剤は、固形形状のまま、低温度で乾燥して製造された
ものであるため、極めて高い強度を有し、各種の形状に
加工でき、懸濁方式、充填方式などの各種の装置形式を
採用することができる。 （３） 本発明において用いられる固定化微生物からな
る脱臭剤は、好気性菌体と嫌気性菌体の両者が固定化さ
れており、好気分解と嫌気分解が同時に進行し、脱臭を
効率よく行なうことができる。 （４） 本発明において用いられる固定化微生物からな
る脱臭剤は、水洗により再生が可能であるので、長期間
連続して脱臭操作を行なうことができる。Since the present invention is constructed as described above, it has the following effects. (1) Since the deodorant composed of the immobilized microorganisms used in the present invention is a dried body composed of only excess sludge, the packing density of the microorganisms can be maintained at a high level, and the exhaust gas can be efficiently deodorized. (2) Since the deodorant composed of immobilized microorganisms used in the present invention is manufactured by drying at a low temperature in a solid form, it has extremely high strength and can be processed into various shapes. Various device types such as a turbid system and a filling system can be adopted. (3) The deodorant comprising an immobilized microorganism used in the present invention has both aerobic and anaerobic cells immobilized, and aerobic decomposition and anaerobic decomposition proceed simultaneously, resulting in efficient deodorization. Can be done. (4) Since the deodorant composed of the immobilized microorganism used in the present invention can be regenerated by washing with water, the deodorizing operation can be continuously performed for a long period of time.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の排ガスの脱臭装置の一実施例（懸濁方
式）を示す概略説明図である。FIG. 1 is a schematic explanatory view showing an embodiment (suspension system) of an exhaust gas deodorizing apparatus of the present invention.

【図２】本発明の排ガスの脱臭装置の他の実施例（充填
方式）を示す概略説明図である。FIG. 2 is a schematic explanatory view showing another embodiment (filling method) of the exhaust gas deodorizing apparatus of the present invention.

【図３】実施例１で用いた脱臭実験装置（懸濁方式）の
系統説明図である。FIG. 3 is a system explanatory view of the deodorization experimental apparatus (suspension method) used in Example 1.

【図４】実施例１（懸濁方式）における結果を示すグラ
フである。FIG. 4 is a graph showing the results of Example 1 (suspension method).

【図５】実施例２（充填方式）における結果を示すグラ
フである。FIG. 5 is a graph showing the results of Example 2 (filling method).

【符号の説明】[Explanation of symbols]

１０ 本体 １２ 懸濁液 １４ 有臭ガス導入管 １６ 気相部 １８ 脱臭ガス導出管 ２０ 有臭ガス入口 ２２ 脱臭ガス出口 ２４ 本体 ２６ 充填層 10 Main Body 12 Suspension 14 Odorous Gas Introducing Pipe 16 Gas Phase Section 18 Deodorizing Gas Outleting Pipe 20 Odorous Gas Inlet 22 Deodorizing Gas Outlet 24 Main Body 26 Packed Bed

───────────────────────────────────────────────────── フロントページの続き (72)発明者 風袋 則夫 茨城県つくば市東１丁目１番３号 工業技 術院微生物工業技術研究所内 (72)発明者 永易 弘三 兵庫県明石市川崎町１番１号 川崎重工業 株式会社明石工場内 (72)発明者 畠山 修一郎 兵庫県明石市川崎町１番１号 川崎重工業 株式会社明石工場内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Norio Tare 1-3-3 Higashi, Tsukuba-shi, Ibaraki Institute of Microbial Technology, Industrial Technology Institute (72) Kozo Eiyasu 1-1 Kawasaki-cho, Akashi-shi, Hyogo No. Kawasaki Heavy Industries Ltd., Akashi Plant (72) Inventor Shuichiro Hatakeyama 1-1 Kawasaki-cho, Akashi-shi, Hyogo Prefecture Kawasaki Heavy Industries Ltd., Akashi Plant

Claims (9)

【特許請求の範囲】[Claims] 【請求項１】 廃水を生物学的処理する際に生成する余
剰汚泥を、水分含有量９０重量％以下にろ過脱水してケ
ーキ状にした後、７０℃以下の温度で乾燥させて得た固
定化微生物と、臭気成分を含む排ガスとを、該固定化微
生物を液中に懸濁させた懸濁液中に排ガスを導入するこ
とにより接触させて、臭気成分を吸着・分解処理するこ
とを特徴とする排ガスの脱臭方法。1. Fixation obtained by filtering and dehydrating excess sludge produced when biologically treating wastewater to a water content of 90% by weight or less to form a cake, and then drying at a temperature of 70 ° C. or less. Characterized by adsorbing and decomposing odorous components by bringing the microbial components and exhaust gas containing odorous components into contact with each other by introducing the exhaust gas into a suspension obtained by suspending the immobilized microorganisms in a liquid. Exhaust gas deodorization method. 【請求項２】 固定化微生物を液中に懸濁させた懸濁液
中に排ガスを導入する代わりに、固定化微生物の充填層
に排ガスを導入することを特徴とする請求項１記載の排
ガスの脱臭方法。2. The exhaust gas according to claim 1, wherein the exhaust gas is introduced into a packed bed of the immobilized microorganisms instead of introducing the exhaust gas into a suspension obtained by suspending the immobilized microorganisms in a liquid. Deodorizing method. 【請求項３】 脱水ケーキの乾燥物を破砕・分粒して固
定化微生物とすることを特徴とする請求項１又は２記載
の排ガスの脱臭方法。3. The method for deodorizing exhaust gas according to claim 1, wherein the dried product of the dehydrated cake is crushed and sized to obtain immobilized microorganisms. 【請求項４】 脱水ケーキを必要な形態に整形した後、
乾燥させることを特徴とする請求項１、２又は３記載の
排ガスの脱臭方法。4. After shaping the dehydrated cake into a required shape,
The method for deodorizing exhaust gas according to claim 1, 2 or 3, characterized by drying. 【請求項５】 脱臭対象に近い成分を含む廃水を処理し
た余剰汚泥を用いることを特徴とする請求項１、２、３
又は４記載の排ガスの脱臭方法。5. A surplus sludge obtained by treating wastewater containing components close to those to be deodorized is used.
Alternatively, the method for deodorizing exhaust gas according to item 4. 【請求項６】 悪臭成分分解能の高い菌体を、予め余剰
汚泥に混合することを特徴とする請求項１、２、３、４
又は５記載の排ガスの脱臭方法。6. The excess sludge is preliminarily mixed with bacterial cells having a high odor component decomposing ability.
Or the method for deodorizing exhaust gas according to 5. 【請求項７】 固定化微生物を水洗して、脱臭能力を再
生することを特徴とする請求項１、２、３、４、５又は
６記載の排ガスの脱臭方法。7. The method of deodorizing exhaust gas according to claim 1, wherein the immobilized microorganisms are washed with water to regenerate the deodorizing ability. 【請求項８】 本体（１０）内に、余剰汚泥を乾燥させ
て得た固定化微生物を液中に懸濁させた懸濁液（１２）
を満たし、本体（１０）内の懸濁液中に有臭ガス導入管
（１４）の一端を位置させ、本体（１０）内の気相部
（１６）に脱臭ガス導出管（１８）を接続したことを特
徴とする排ガスの脱臭装置。8. A suspension (12) in which an immobilized microorganism obtained by drying excess sludge is suspended in a liquid in a main body (10).
And one end of the odorous gas introduction pipe (14) is located in the suspension in the body (10), and the deodorized gas lead-out pipe (18) is connected to the gas phase part (16) in the body (10). An exhaust gas deodorizing device characterized in that 【請求項９】 一端に有臭ガス入口（２０）を有し、他
端に脱臭ガス出口（２２）を有する本体（２４）内に、
余剰汚泥を乾燥させて得た固定化微生物の充填層（２
６）を設けたことを特徴とする排ガスの脱臭装置。9. A body (24) having an odorous gas inlet (20) at one end and a deodorant gas outlet (22) at the other end,
Packed layer of immobilized microorganisms obtained by drying excess sludge (2
A deodorizing device for exhaust gas, which is provided with 6).
JP3204673A 1991-07-19 1991-07-19 Exhaust gas deodorization method Expired - Lifetime JP2575974B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3204673A JP2575974B2 (en) 1991-07-19 1991-07-19 Exhaust gas deodorization method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3204673A JP2575974B2 (en) 1991-07-19 1991-07-19 Exhaust gas deodorization method

Publications (2)

Publication Number Publication Date
JPH05123527A true JPH05123527A (en) 1993-05-21
JP2575974B2 JP2575974B2 (en) 1997-01-29

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Country Link
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6391621B1 (en) 1999-03-03 2002-05-21 Fuji Photo Film Co., Ltd. Process for the treatment of organic gas components
JP2007111655A (en) * 2005-10-21 2007-05-10 Oki Electric Ind Co Ltd Deodorizing apparatus
CN110124488A (en) * 2019-06-04 2019-08-16 北京赛科康仑环保科技有限公司 One kind is administered for VOCs in biochemical treatment and tail gas recycles technique

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61271017A (en) * 1985-05-25 1986-12-01 Hitachi Plant Eng & Constr Co Ltd Biological deodorizing device
JPS642569A (en) * 1987-06-25 1989-01-06 Agency Of Ind Science & Technol Immobilized microorganism and reaction process thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61271017A (en) * 1985-05-25 1986-12-01 Hitachi Plant Eng & Constr Co Ltd Biological deodorizing device
JPS642569A (en) * 1987-06-25 1989-01-06 Agency Of Ind Science & Technol Immobilized microorganism and reaction process thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6391621B1 (en) 1999-03-03 2002-05-21 Fuji Photo Film Co., Ltd. Process for the treatment of organic gas components
JP2007111655A (en) * 2005-10-21 2007-05-10 Oki Electric Ind Co Ltd Deodorizing apparatus
CN110124488A (en) * 2019-06-04 2019-08-16 北京赛科康仑环保科技有限公司 One kind is administered for VOCs in biochemical treatment and tail gas recycles technique

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