JP2820824B2 - Biological treatment of digestive gas - Google Patents
Biological treatment of digestive gasInfo
- Publication number
- JP2820824B2 JP2820824B2 JP4018950A JP1895092A JP2820824B2 JP 2820824 B2 JP2820824 B2 JP 2820824B2 JP 4018950 A JP4018950 A JP 4018950A JP 1895092 A JP1895092 A JP 1895092A JP 2820824 B2 JP2820824 B2 JP 2820824B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- liquid
- microorganisms
- packed bed
- hydrogen sulfide
- 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.)
- Expired - Lifetime
Links
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
Landscapes
- Treating Waste Gases (AREA)
- Biological Treatment Of Waste Water (AREA)
- Activated Sludge Processes (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、消化ガスの生物学的処
理方法に係り、特に、し尿処理場、下水処理場その他の
各種工場などから発生する硫化水素などの硫黄系臭気物
質、アンモニア、二酸化炭素などが混在する消化ガスの
処理に有効な生物学的処理方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for biologically treating digestive gas, and more particularly to a sulfur-based odorant such as hydrogen sulfide generated from a human waste treatment plant, a sewage treatment plant and various other factories, ammonia, and the like. The present invention relates to a biological treatment method effective for treating digestive gas containing carbon dioxide and the like.
【０００２】[0002]
【従来の技術】し尿処理場あるいは下水処理場汚泥処理
系など、高濃度有機物含有廃液を嫌気処理するときに生
じる消化ガスは、貯留のための減容および省エネルギー
の目的から脱炭酸を、更に、燃焼ガスの腐食性および２
次公害（SOx ）の問題から脱硫処理を施している。2. Description of the Related Art Digestion gas generated when performing anaerobic treatment of high-concentration organic matter-containing waste liquid, such as in a human waste treatment plant or a sewage treatment plant sludge treatment system, is subjected to decarboxylation for the purpose of volume reduction for storage and energy saving. Corrosiveness of combustion gas and 2
Desulfurization treatment is applied due to the problem of secondary pollution (SOx).
【０００３】これ等の脱炭酸や脱硫処理には、通常、洗
浄方式および吸着方式が採用されている。[0003] In these decarboxylation and desulfurization treatments, a washing method and an adsorption method are usually employed.
【０００４】近年、ガス処理に生物学的手法を応用する
研究が進められ、特に脱臭分野においてはこれが一部実
施されるまでに至っている。[0004] In recent years, research on applying biological techniques to gas treatment has been advanced, and in the field of deodorization, in particular, some of them have been implemented.
【０００５】[0005]
【発明が解決しようとする課題】しかし、上記する従来
の洗浄方式や吸着方式による脱炭酸および脱硫処理で
は、いずれの方法も薬品費や吸着材交換費が嵩み、維持
管理面においてもかなりの人的労力を必要とする。However, in the above-mentioned decarboxylation and desulfurization treatments by the conventional cleaning method and adsorption method, any of the methods requires a high chemical cost and an adsorbent replacement cost, and also has a considerable maintenance and management aspect. Requires human labor.
【０００６】また、生物学的処理法は、反応が自然界に
生育する微生物の仲介で行われるため運転経費がほとん
どかからないという利点があるが、これまでに開発され
た手法は、通常、好気性微生物を用いるものであり、上
記するような嫌気性ガスを処理する場合には酸素の供給
を必要とする。従って、消化ガスのように過剰の空気の
混入により発火の恐れのあるガスに対しては、過剰な酸
素の供給は危険であるため、完全嫌気条件あるいは微好
気条件で処理する必要がある。[0006] The biological treatment method has the advantage that the reaction is carried out by the mediation of microorganisms that grow in nature, so that there is little operating cost. However, the methods developed so far usually use aerobic microorganisms. When an anaerobic gas as described above is treated, supply of oxygen is required. Therefore, for a gas such as a digestive gas which may be ignited due to the mixing of excess air, it is necessary to treat the gas under completely anaerobic conditions or microaerobic conditions because supply of excessive oxygen is dangerous.
【０００７】自然界には、嫌気条件で脱硫（硫化水素を
酸化し、硫酸としてガス中より分解する）可能な微生物
が存在するが、嫌気性微生物を用いる場合、臭気を発す
ることがあったり、また、酸素に代わるエネルギー（例
えば、紅色イオウ細菌の場合は光）を与える必要がある
など、維持管理及び経済性に問題がある。[0007] In the natural world, there are microorganisms that can be desulfurized (oxidize hydrogen sulfide and decompose as sulfuric acid from the gas) under anaerobic conditions, but when anaerobic microorganisms are used, they may give off odor, However, there is a problem in maintenance and economics, such as the need to provide energy instead of oxygen (for example, light in the case of purple sulfur bacteria).
【０００８】また、消化ガスの主要成分は、メタン、二
酸化炭素、硫化水素、アンモニア等であるが、これを燃
焼する場合、SOx , NOx の低減のため、硫化水素、アン
モニアを除去しておく必要がある。これらの成分は微生
物により容易に酸化されるが、反応に係わる微生物が好
気性細菌であるため、微生物の生育環境を好気性に保つ
必要がある。[0008] The main components of the digested gas are methane, carbon dioxide, hydrogen sulfide, ammonia and the like. When burning this, it is necessary to remove hydrogen sulfide and ammonia in order to reduce SOx and NOx. There is. These components are easily oxidized by microorganisms, but since the microorganisms involved in the reaction are aerobic bacteria, it is necessary to keep the growth environment of the microorganisms aerobic.
【０００９】本発明は上記の点に鑑みなされたものであ
って、従来技術とされる生物学的処理法の問題点を解決
した消化ガスの生物学的処理方法を提供することを目的
とする。The present invention has been made in view of the above points, and has as its object to provide a biological treatment method for digested gas that solves the problems of the conventional biological treatment method. .
【００１０】[0010]
【課題を解決するための手段】上記の目的を達成するた
めの本発明の要旨とするところは、処理器内に微生物を
着生させた充填材を充填した充填層を形成し、処理器内
に消化ガスを導入してこれを曝気槽に循環する吸収液と
接触させてガス中の硫化水素や炭酸ガスを吸収液に吸収
させ、該吸収液が充填層内を流下する間に微生物により
分解され、前記曝気槽より放散する主に硫化水素、アン
モニアなどの臭気成分を別の処理器において生物学的に
処理することを特徴とする消化ガスの生物学的処理方法
にある。SUMMARY OF THE INVENTION In order to achieve the above object, the gist of the present invention is to form a packed bed filled with a microorganism-grown filler in a processing unit, The digestive gas is introduced into the tank and brought into contact with the absorbent circulating in the aeration tank to absorb hydrogen sulfide and carbon dioxide in the gas into the absorbent, and decomposed by microorganisms while the absorbent flows down the packed bed. In addition, there is provided a method for biologically treating digestive gas, wherein an odor component mainly emitted from the aeration tank, such as hydrogen sulfide or ammonia, is biologically treated in another treatment device.
【００１１】[0011]
【作用】処理器に導入された消化ガスを、微生物を着生
させた充填材を充填した充填層に通気し、曝気により酸
素を飽和した大量の吸収液と接触させると、充填層中の
微生物は、その溶存酸素を利用してガス中の硫化水素、
アンモニアなどを酸化することができる。The digestion gas introduced into the treatment vessel is passed through a packed bed filled with a packing material on which microorganisms have formed, and is brought into contact with a large amount of an absorbent saturated with oxygen by aeration, whereby the microorganisms in the packed bed are removed. Uses the dissolved oxygen to produce hydrogen sulfide in the gas,
Ammonia and the like can be oxidized.
【００１２】吸収液中に吸収された硫化水素などの一部
は充填層内を通過する間に充填材表面に着生する微生物
により酸化され硫酸などとして吸収液に混入する。A part of the hydrogen sulfide or the like absorbed in the absorbing solution is oxidized by microorganisms settled on the surface of the filler while passing through the packed bed and mixed into the absorbing solution as sulfuric acid or the like.
【００１３】消化ガスと吸収液を接触させることにより
消化ガス中の二酸化炭素が吸収液中に溶解するため、ガ
スが減容化され、その結果、単位容積当たりの発熱量が
増加するという効果もある。Since the carbon dioxide in the digestion gas is dissolved in the absorption solution by bringing the digestion gas into contact with the absorption solution, the gas volume is reduced, and as a result, the calorific value per unit volume increases. is there.
【００１４】処理器下部の液溜部に落下した吸収液は、
曝気して酸素を飽和した状態で吸収液として循環使用さ
れる。曝気は酸素の溶解と吸収液中に溶存する二酸化炭
素の脱気も兼ねている。The absorbing liquid that has fallen into the liquid reservoir at the bottom of the processor is
It is circulated and used as an absorbent after aeration and saturation of oxygen. Aeration also serves to dissolve oxygen and degas carbon dioxide dissolved in the absorbing solution.
【００１５】曝気に際して吸収液中に残存する硫化水
素、アンモニア等の臭気成分が離散するが、これらの臭
気成分は別の脱臭塔において好気条件下で生物学的に分
解除去して無臭化処理ガスとして排出される。Odor components such as hydrogen sulfide and ammonia remaining in the absorbing solution upon aeration are dispersed, and these odor components are biologically decomposed and removed under aerobic conditions in another deodorization tower to remove odor. Exhausted as gas.
【００１６】[0016]
【実施例】以下、本発明の実施例を図面を参照しながら
具体的に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings.
【００１７】図１は本発明を産業的規模で実施するのに
適用される装置の一例を示す概略構成図である。FIG. 1 is a schematic configuration diagram showing an example of an apparatus applied to carry out the present invention on an industrial scale.
【００１８】実施例のものは消化ガス中の除去目的成分
を吸収液に吸収させる洗浄塔Ａと、吸収液を循環使用す
るために吸収液を曝気する際に離散する臭気成分を除去
する脱臭塔Ｂを併設した場合を示す。The embodiment includes a washing tower A for absorbing a target component in digestion gas into an absorbing solution, and a deodorizing tower for removing odorous components that are separated when the absorbing solution is aerated to circulate the absorbing solution. The case where B is added is shown.
【００１９】図において、１は洗浄塔Ａを構成する処理
器、２は処理器１内中程に形成した充填層で、微生物を
着生させた充填材を充填してなる。３は処理器１内で充
填層２の上部に配装した散水器で、給液管４に接続して
いる。５は充填層２下方で処理器１側壁に設けた給気
口、６は処理器１の頂部に設けた排気口、７は排気口６
近くで散水器４上方に配装したエリミネーター、８は処
理器１の底部に形成した液溜部である。In FIG. 1, reference numeral 1 denotes a processor constituting the washing tower A, and reference numeral 2 denotes a packed bed formed in the middle of the processor 1, which is filled with a filler on which microorganisms have grown. Reference numeral 3 denotes a water sprinkler disposed above the packed bed 2 in the processor 1, and is connected to the liquid supply pipe 4. Reference numeral 5 denotes an air supply port provided on the side wall of the processing unit 1 below the packed bed 2, 6 denotes an exhaust port provided on the top of the processing unit 1, and 7 denotes an exhaust port 6.
An eliminator 8 disposed near the water sprinkler 4 nearby is a liquid reservoir formed at the bottom of the processor 1.
【００２０】９は洗浄塔Ａに併設した脱臭塔Ｂを構成す
る処理器、１０はこの処理器９内中程に形成した充填層
で、微生物を着生させた充填材を充填してなる。１１は
処理器９内で充填層１０の上部に配装した散水器で、給
液管１２に接続している。１３は処理器９内で充填層１
０下方に配設した水切板で、充填層１０から落下する吸
収液を受けて処理器９の内壁面に周設した集水溝１４に
集水して排水管１５を介して外部に排出するようにした
ものである。１６は処理器９の頂部に設けた排気口、１
７は排気口１６近くで散水器１１上方に配装したエリミ
ネーター、１８は処理器９の底部に形成した液溜部で、
この液溜部１８は前記洗浄塔Ａの液溜部８と隔壁１９に
よって仕切られ、脱臭塔Ｂ側からの曝気ガスが洗浄塔Ａ
側へリークしないようにし、隔壁１９下部に設けた通孔
２０によって両方の液溜部８，１８を連通させている。
２１は液溜部１８内に配装した曝気用の散気管で、送気
管２２に接続している。２３は液溜部１８に接続した液
取出し管で、この液取出し管２３を共通の循環ポンプ２
４を介して前記散水器３，１１の給液管４，１２に接続
している。２５，２６は散水量調整のために両給液管
４，１２にそれぞれ挿設した散水弁である。２７は液溜
部１８に接続した補充液供給管、２８は液溜部８に接続
したオーバーフロー管で、両方の液溜部８，１８の液位
を一定に保つためのものである。Reference numeral 9 denotes a processor constituting the deodorization tower B provided in parallel with the washing tower A. Reference numeral 10 denotes a packed bed formed in the middle of the processor 9 and is filled with a filler on which microorganisms have formed. Reference numeral 11 denotes a sprinkler disposed above the packed bed 10 in the processing unit 9, and is connected to the liquid supply pipe 12. 13 is a packed bed 1 in the processor 9
0 The draining plate disposed below receives the absorbing liquid falling from the packed bed 10, collects water in a water collecting groove 14 provided on the inner wall surface of the processor 9, and discharges the water to the outside via a drain pipe 15. It is like that. Reference numeral 16 denotes an exhaust port provided at the top of the processor 9;
7 is an eliminator provided near the exhaust port 16 above the sprinkler 11, and 18 is a liquid reservoir formed at the bottom of the processor 9.
The liquid reservoir 18 is separated from the liquid reservoir 8 of the washing tower A by a partition wall 19, and aeration gas from the deodorization tower B side is supplied to the washing tower A.
The two reservoirs 8 and 18 are communicated by a through hole 20 provided below the partition wall 19 so as not to leak to the side.
Reference numeral 21 denotes an aeration diffuser provided in the liquid reservoir 18 and connected to the air supply pipe 22. Reference numeral 23 denotes a liquid discharge pipe connected to the liquid reservoir 18, and this liquid discharge pipe 23 is connected to the common circulation pump 2
4 are connected to the liquid supply pipes 4 and 12 of the sprinklers 3 and 11. Numerals 25 and 26 are watering valves respectively inserted into the two liquid supply pipes 4 and 12 for watering amount adjustment. Reference numeral 27 denotes a replenisher supply pipe connected to the liquid reservoir 18, and reference numeral 28 denotes an overflow pipe connected to the liquid reservoir 8, for keeping the liquid level of both the liquid reservoirs 8 and 18 constant.
【００２１】上記構成において、消化ガスは、給気口５
により洗浄塔Ａの処理器１に導入され、散水器４より散
水された吸収液と充填層２内で効率的に気液接触が行わ
れ、ガス中の硫化水素、アンモニア、二酸化炭素などは
吸収液に移行する。処理されたガスは、エリミネーター
７で水分を除去した後、排出口６より排出されてガスホ
ルダーあるいは燃焼設備に導かれる。In the above configuration, the digestion gas is supplied to the air supply port 5
The gas is introduced into the treatment device 1 of the washing tower A, and the gas-liquid contact is efficiently performed in the packed layer 2 with the absorbing liquid sprinkled from the water sprinkler 4, and hydrogen sulfide, ammonia, carbon dioxide, etc. in the gas are absorbed. Transfer to liquid. After the treated gas is removed of water by the eliminator 7, it is discharged from the discharge port 6 and guided to a gas holder or a combustion facility.
【００２２】除去目的成分を吸収した吸収液は、充填層
２を流下する間に充填層表面あるいは内部に生育する微
生物と接触し、吸収液中の硫化水素などの一部は酸化さ
れて硫酸などとなり充填層２から落下する吸収液ととも
に液溜部８に落下する。こうして液溜部８に落下した貯
留液は隔壁１９の通孔２０を経て脱臭塔Ｂの液溜部１８
に流入し、ここで散水管２１により曝気される。この曝
気に際して液溜部１８の貯留液中から吸収したガス成分
が放散する。この放散ガスには、硫化水素、アンモニア
等の臭気成分が含まれており、これらが充填層１０を通
過する間に好気性微生物により効率的に分解され、無臭
化された処理ガスがエリミネーター１７で水分が除去さ
れて排出口１６より大気放出されるか、あるいは必要に
応じて仕上げ処理がなされる。充填層１０から落下した
吸収液は、水切板１３で集水溝１４に集水して排出管１
５を介して器外に放流される。液溜部１８の貯留液は曝
気によって再び酸素を飽和し、循環ポンプ２４により散
水器３，１１に送給されて循環使用される。こうして曝
気し酸素を飽和させて吸収液を循環することにより、微
生物による分解を微好気条件下で行うことができる。ま
た、この液の一部は充填層２，１０における生物の生育
に必要な水分として利用される。The absorbing solution having absorbed the component to be removed comes into contact with microorganisms that grow on the surface or inside the packed bed while flowing down the packed bed 2, and a part of the hydrogen sulfide and the like in the absorbing solution is oxidized to sulfuric acid and the like. And falls into the liquid reservoir 8 together with the absorbing liquid falling from the packed bed 2. The stored liquid that has fallen into the liquid storage section 8 in this way passes through the through hole 20 of the partition wall 19 and the liquid storage section 18 of the deodorization tower B.
And is here aerated by the sprinkler tube 21. During this aeration, the absorbed gas component is diffused from the liquid stored in the liquid reservoir 18. The released gas contains odor components such as hydrogen sulfide and ammonia, and these are efficiently decomposed by aerobic microorganisms while passing through the packed layer 10, and the deodorized treated gas is removed by the eliminator 17. The water is removed and discharged to the atmosphere from the discharge port 16 or a finishing process is performed as necessary. The absorbing liquid that has fallen from the packed bed 10 is collected in the collecting groove 14 by the draining plate 13 and is collected by the drain pipe 1.
It is discharged out of the vessel via 5. The stored liquid in the liquid storage section 18 is again saturated with oxygen by aeration, and is sent to the water sprayers 3 and 11 by the circulation pump 24 for circulating use. By circulating the absorbing solution by aerating and saturating oxygen in this way, the decomposition by microorganisms can be performed under microaerobic conditions. In addition, a part of this liquid is used as water necessary for growing organisms in the packed layers 2 and 10.
【００２３】然して、上記する方法を実施するに当たっ
て、具体的事項としては次のようなものがある。However, in carrying out the above-mentioned method, the following are specific items.
【００２４】(ａ） 洗浄塔Ａの充填層２に用いる充填
材としては、生物が着生しやすく、かつ気液接触効率の
高いものが望ましく、通常、波形プレ トが用いられる
が、多孔質セラミック、水砕スラグ、ピート、スポンジ
等であってもよいし、除去目的成分を分解する微生物群
を抱活あるいは付着させた高分子ゲル等を用いてもよ
い。また、脱臭塔Ｂの充填層１０に用いる充填材として
は、生物脱臭に適した充填材であればよく、吸着材、多
孔質セラミック、ピート、スポンジ、水砕スラグ等が用
いられる。また、除去目的成分を分解する微生物群を抱
括あるいは、付着させた高分子ゲル等であってもよい。(A) As the packing material used for the packed bed 2 of the washing tower A, it is desirable to use a material on which organisms can easily form and have high gas-liquid contact efficiency. Usually, a corrugated plate is used. Ceramic, granulated slag, peat, sponge, or the like may be used, or a polymer gel or the like in which a microorganism group that decomposes the component to be removed is activated or adhered. As the filler used for the packed bed 10 of the deodorization tower B, any filler suitable for biological deodorization may be used, and an adsorbent, porous ceramic, peat, sponge, granulated slag, or the like is used. Further, it may be a polymer gel or the like in which a microorganism group that decomposes the component to be removed is enclosed or adhered.
【００２５】(ｂ） 上記する実施例では、洗浄塔Ａと
脱臭塔Ｂの液溜部８，１８を隔壁１９により仕切った構
成のものを示しているが、両方の液溜部８，１８をそれ
ぞれ独立させて連通管で接続する構成のものであっでも
よい。(B) In the above embodiment, the liquid reservoirs 8 and 18 of the washing tower A and the deodorization tower B are configured to be separated by the partition wall 19, but both the liquid reservoirs 8 and 18 are separated. The configuration may be such that they are independently connected by a communication pipe.
【００２６】(ｃ） 散水に用いる吸収液としては、通
常下水２次処理水を用いるが、工業用水、地下水、井戸
水であってもよい。また、硫化水素などを酸化する微生
物は好気性であるため、微生物に必要な酸素は吸収液を
予め、酸素を含むガスで曝気し、酸素を飽和させておく
ことにより散水中の溶存酸素のかたちで与える。この散
水は間歇的であってもよいが通常連続で行う。(C) As the absorbing liquid used for watering, secondary sewage water is usually used, but it may be industrial water, groundwater, or well water. In addition, since microorganisms that oxidize hydrogen sulfide and the like are aerobic, the oxygen required for microorganisms is obtained by aerating the absorbing solution with an oxygen-containing gas in advance and saturating the oxygen to form dissolved oxygen in the water spray. Give in. This watering may be intermittent, but is usually performed continuously.
【００２７】(ｄ） 脱臭塔Ｂにおける散水液は循環使
用することも可能であるが、硫化水素の生物分解により
生成する硫酸によりpHが低下するため、中和操作の煩雑
さ及び経済性を考慮して水切板１３で集水して器外に放
流する一過式とすることが好ましい。(D) The sprinkling liquid in the deodorization tower B can be recycled. However, since the pH is lowered by sulfuric acid generated by the biodegradation of hydrogen sulfide, the complexity and economy of the neutralization operation are taken into consideration. It is preferable to use a one-time system in which water is collected by the draining plate 13 and discharged outside the vessel.
【００２８】(ｅ） 脱臭塔Ｂにおいては、曝気に際し
て貯留液中から放散される曝気ガスを脱臭することか
ら、曝気に用いるガスは酸素を含んでいれば臭気ガスで
あってもよく、他の場所で発生する好気性臭気ガスを用
いると好気性臭気の脱臭も同時に行うことが可能であ
る。(E) In the deodorization tower B, since the aerated gas released from the stored liquid at the time of aeration is deodorized, the gas used for aeration may be an odorous gas as long as it contains oxygen. When an aerobic odor gas generated in a place is used, deodorization of the aerobic odor can be performed at the same time.
【００２９】(ｆ） 液溜部８，１８に対する液補充
は、貯留液の水位を検出して行ってもよいが、通常は補
充液供給管２７より一定量を連続的に供給してオーバー
フロー管２８よりオーバーフローさせる。(F) The replenishment of the liquid reservoirs 8 and 18 may be performed by detecting the water level of the stored liquid. However, normally, a constant amount is continuously supplied from the replenisher supply pipe 27 and the overflow pipe is supplied. Overflow from 28.
【００３０】(ｇ） 脱臭塔Ｂの充填層１０は、実施例
のような１層式のものであってもよいが、複数の充填層
を多段に設けた多層式にして各段ごとに各臭気成分を分
解する微生物の生育に有利な条件を設定することによっ
て一層効果的な脱臭ができる。また、その他の形式であ
ってもよい。(G) The packed bed 10 of the deodorization tower B may be of a single-layer type as in the embodiment, but may be of a multi-layer type in which a plurality of packed layers are provided in multiple stages. By setting conditions favorable for the growth of microorganisms that decompose odor components, more effective deodorization can be achieved. Also, other formats may be used.
【００３１】(ｈ） 上記する実施例では維持管理、経
済面から生物脱臭塔を用いているが、これは従来の物理
化学的脱臭塔であってもよい。(H) In the above embodiment, a biological deodorization tower is used in terms of maintenance, management and economy, but it may be a conventional physicochemical deodorization tower.
【００３２】[0032]
【発明の効果】以上説明したように本発明によれば、次
のような効果を奏する。As described above, according to the present invention, the following effects can be obtained.
【００３３】(ａ） 消化ガスの処理を薬剤を使わずに
行うため、運転経費が安価である。 (ｂ） 吸収したガス成分をさらに生物学的に処理する
ため２次公害の発生がない。(A) Since the digestion gas is processed without using a chemical, the operating cost is low. (b) No secondary pollution occurs because the absorbed gas components are further biologically treated.
【００３４】(ｃ） 曝気用ガスとしては、他で発生す
る好気性臭気ガスを用いることができ、この場合は当該
臭気ガスの脱臭も同時に行える。(C) As the gas for aeration, an aerobic odor gas generated from other sources can be used. In this case, the odor gas can be deodorized at the same time.
図１は本発明が適用される処理装置の一例を示す縦断面
図である。FIG. 1 is a longitudinal sectional view showing an example of a processing apparatus to which the present invention is applied.
１…処理器（洗浄塔） ２…充填層 ３…散水器 ８…液溜部 ９…処理器（脱臭塔） １０…充填層 １１…散水器 １８…液溜部 ２１…散気管 ２４…循環ポンプ Ａ…洗浄塔 Ｂ…脱臭塔 DESCRIPTION OF SYMBOLS 1 ... Processor (washing tower) 2 ... Packing layer 3 ... Sprinkler 8 ... Liquid reservoir 9 ... Processor (deodorization tower) 10 ... Packing layer 11 ... Sprinkler 18 ... Liquid reservoir 21 ... Air diffuser 24 ... Circulation pump A: Cleaning tower B: Deodorization tower
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｃ０２Ｆ 3/04 (58)調査した分野(Int.Cl.6，ＤＢ名) B01D 53/34──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. 6 identification code FI C02F 3/04 (58) Field surveyed (Int.Cl. 6 , DB name) B01D 53/34
Claims (1)
充填した充填層を形成し、処理器内に消化ガスを導入し
てこれを曝気槽に循環する吸収液と接触させてガス中の
硫化水素や炭酸ガスを吸収液に吸収させ、該吸収液が充
填層内を流下する間に微生物により分解され、前記曝気
槽より放散する主に硫化水素、アンモニアの臭気成分を
別の処理器において生物学的に処理することを特徴とす
る消化ガスの生物学的処理方法。1. A packed bed filled with a filler on which microorganisms have been grown is formed in a treatment device, and a digestion gas is introduced into the treatment device, and the digested gas is brought into contact with an absorbing solution circulating in an aeration tank to form a gas. Hydrogen sulfide and carbon dioxide gas are absorbed by the absorbing solution, and the absorbing solution is decomposed by microorganisms while flowing down the packed bed, and another odor component of hydrogen sulfide and ammonia mainly emitted from the aeration tank is separated. A biological treatment method for digestive gas, comprising biological treatment in a vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4018950A JP2820824B2 (en) | 1992-02-04 | 1992-02-04 | Biological treatment of digestive gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4018950A JP2820824B2 (en) | 1992-02-04 | 1992-02-04 | Biological treatment of digestive gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05212238A JPH05212238A (en) | 1993-08-24 |
| JP2820824B2 true JP2820824B2 (en) | 1998-11-05 |
Family
ID=11985930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4018950A Expired - Lifetime JP2820824B2 (en) | 1992-02-04 | 1992-02-04 | Biological treatment of digestive gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2820824B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990005168A1 (en) * | 1988-11-11 | 1990-05-17 | Shinto Paint Company, Limited | Thermosetting resin composition and powder coating material comprising same |
| JP3723994B2 (en) * | 1994-08-03 | 2005-12-07 | 栗田工業株式会社 | Anaerobic biological reaction gas desulfurization equipment |
| CN108187450B (en) * | 2018-01-24 | 2021-04-27 | 北京林业大学 | Method for strengthening in-situ treatment of malodorous gas of sewage treatment plant by using rusted iron chips |
| CN114933402A (en) * | 2022-06-08 | 2022-08-23 | 绿能生态环境科技有限公司 | Anaerobic in-situ methane production reactor |
-
1992
- 1992-02-04 JP JP4018950A patent/JP2820824B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05212238A (en) | 1993-08-24 |
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