JPH05123693A - Disposal equipment for organic drainage by anaerobic microorganism - Google Patents
Disposal equipment for organic drainage by anaerobic microorganismInfo
- Publication number
- JPH05123693A JPH05123693A JP28995691A JP28995691A JPH05123693A JP H05123693 A JPH05123693 A JP H05123693A JP 28995691 A JP28995691 A JP 28995691A JP 28995691 A JP28995691 A JP 28995691A JP H05123693 A JPH05123693 A JP H05123693A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- fermentation tank
- methane
- acid fermentation
- acid
- 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
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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Description
【０００１】[0001]
【産業上の利用分野】本発明は、有機性排水の処理装置
に関し、詳しくは嫌気性微生物によって有機物を分解す
る処理装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a treatment device for organic waste water, and more particularly to a treatment device for decomposing organic substances by anaerobic microorganisms.
【０００２】[0002]
【従来技術】近年、石油、天然ガスなどの化石燃料の有
限性が指摘され、これに代替できるエネルギーの開発が
世界的な課題とされているが、このような中で、産業廃
棄物の一つでもある排水の処理に関連して、嫌気性微生
物による有機性排水の処理は、嫌気性微生物を利用して
排水に含まれる有機物（このような排水を有機性排水と
いう）を分解処理することで発生するメタンガスがエネ
ルギー源として回収でき、汚濁物質の環境への排出を防
止できるという観点からも注目されている。2. Description of the Related Art In recent years, it has been pointed out that fossil fuels such as petroleum and natural gas are limited, and the development of energy that can replace them is a global issue. In connection with the treatment of wastewater, which is also a problem, the treatment of organic wastewater by anaerobic microorganisms is the decomposition of organic matter contained in the wastewater using anaerobic microorganisms (such wastewater is called organic wastewater). Methane gas generated in Japan can be recovered as an energy source, and it is drawing attention from the viewpoint that pollutants can be prevented from being discharged into the environment.
【０００３】この嫌気性微生物による有機性排水の処理
は懸濁法と生物膜法に大きく分けられ、特に、懸濁法に
属する上向流スラッジブランケット法（ＵＡＳＢ法）
と、生物膜法に属する処理槽内に充填した充填材（微生
物担体）に嫌気性微生物を付着させる濾床法（固定床
法）とは、嫌気性微生物の高濃度の保持ができて効率の
高い処理ができる装置として近時その実施及び研究が盛
んとなっている。The treatment of organic wastewater by the anaerobic microorganisms is roughly divided into a suspension method and a biofilm method, and particularly, an upflow sludge blanket method (UASB method) belonging to the suspension method.
And the filter bed method (fixed bed method) of attaching anaerobic microorganisms to the packing material (microorganism carrier) filled in the treatment tank belonging to the biofilm method is capable of maintaining a high concentration of anaerobic microorganisms and is effective. As an apparatus capable of high processing, its implementation and research have recently become active.
【０００４】嫌気性微生物による処理法は、一般に酸醗
酵過程と、メタン醗酵過程に分けられる。メタン醗酵
は、酢酸をはじめとする有機酸を基質として処理が進行
するので、排水中に含まれる有機物を有機酸とする酸醗
酵過程が重要とされている。The treatment method with anaerobic microorganisms is generally divided into an acid fermentation process and a methane fermentation process. Since methane fermentation proceeds using organic acids such as acetic acid as a substrate, an acid fermentation process using organic substances contained in wastewater as organic acids is considered important.
【０００５】嫌気性微生物を用いた処理装置の従来例を
説明すると、第２図は、メタン醗酵槽１１の前段に、こ
のメタン醗酵槽１１に流入させる原排水の水量を調整す
るための調整槽１２を設け、この調整槽１２からポンプ
１３でメタン醗酵槽１１に原排水を供給するように構成
した装置を示している。このような装置は、原排水に含
まれる有機物が有機酸あるいは比較的低分子の有機物で
ある場合に適しているが、一般に、嫌気性微生物による
処理では液化・酸発酵過程が律速段階と言われているよ
うに、高分子の有機物を含む原排水を第２図の装置でそ
のまま処理しようとすると、メタン醗酵槽１１で非常に
長い滞留時間を要することとなって効率のよい処理が実
現できない。A conventional example of a treatment apparatus using anaerobic microorganisms will be described. FIG. 2 shows an adjusting tank for adjusting the amount of raw waste water flowing into the methane fermentation tank 11 before the methane fermentation tank 11. 12 shows an apparatus configured to supply raw waste water to the methane fermentation tank 11 from the adjustment tank 12 by the pump 13 from the adjustment tank 12. Such an apparatus is suitable when the organic matter contained in the raw waste water is an organic acid or an organic matter of relatively low molecular weight, but it is generally said that the liquefaction / acid fermentation process is the rate-determining step in the treatment with anaerobic microorganisms. As described above, if the raw waste water containing high molecular weight organic substances is to be treated as it is in the apparatus shown in FIG. 2, an extremely long retention time is required in the methane fermentation tank 11, and efficient treatment cannot be realized.
【０００６】そこで比較的高分子の有機物を含む原排水
を対象とする場合には、第３図に示すように、調整槽１
２とメタン醗酵槽１１の間に酸醗酵槽１４を設置し、原
排水に含まれる有機物を有機酸ないし比較的低分子の有
機物に分解させることが多い。これによってメタン醗酵
槽１１での原排水の滞留時間が短くなり、効率のよい処
理が実現できる。なお第２図に示した装置において、調
整槽１２を酸醗酵槽に兼用させることも行なわれるが、
従来一般の調整槽１２では微生物濃度が低いため、調整
槽で酸醗酵を行なわせるようにすると該槽での滞留時間
が長くなり（例えば一般的な処理装置で６時間以上）、
その分調整槽の容量に大きなものが必要となって、設備
の設置に必要な面積，容積が過大となると共に、調整槽
の水位は常に変動するから滞留時間もそれに伴って変動
し、そのため該槽での処理性能が不安定になるという欠
点がある。Therefore, in the case of targeting raw wastewater containing relatively high molecular weight organic matter, as shown in FIG.
In many cases, an acid fermentation tank 14 is installed between 2 and the methane fermentation tank 11 to decompose the organic matter contained in the raw waste water into organic acid or relatively low molecular weight organic matter. As a result, the residence time of the raw waste water in the methane fermentation tank 11 is shortened, and efficient treatment can be realized. In the apparatus shown in FIG. 2, the adjusting tank 12 may be used also as an acid fermentation tank,
Since the concentration of microorganisms in the conventional general adjusting tank 12 is low, if the acid fermentation is carried out in the adjusting tank, the residence time in the adjusting tank becomes long (for example, 6 hours or more in a general treatment apparatus),
Therefore, a large capacity of the adjusting tank becomes necessary, and the area and volume required for installing the equipment become excessive, and since the water level of the adjusting tank constantly changes, the residence time also changes accordingly. There is a drawback that the processing performance in the tank becomes unstable.
【０００７】[0007]
【発明が解決しようとする課題】上記のように、従来の
嫌気性微生物による有機性排水の処理において、例えば
脂質やタンパク質等の比較的高分子の有機物を含む原排
水を処理する場合には、メタン醗酵槽の前段に調整槽と
酸醗酵槽を順次に設けることが好ましいと考えられる
が、このような装置においても次のような問題がある。As described above, in the treatment of organic wastewater with conventional anaerobic microorganisms, for example, in the case of treating raw wastewater containing relatively high molecular weight organic substances such as lipids and proteins, It is considered preferable to sequentially provide an adjusting tank and an acid fermentation tank before the methane fermentation tank, but such an apparatus also has the following problems.
【０００８】すなわち、メタン醗酵槽１１における処理
効率を向上させるためにその前段に第３図の如く酸醗酵
槽１４を設ける場合、該酸醗酵槽１４をいわゆる浮遊式
の処理装置とすると前述の調整槽の場合と同じく微生物
の高濃度化が困難であることから処理効率が悪く、大容
量の設備が必要となる。That is, when the acid fermentation tank 14 is provided in the preceding stage as shown in FIG. 3 in order to improve the processing efficiency in the methane fermentation tank 11, the acid fermentation tank 14 is a so-called floating type processing apparatus and the above-mentioned adjustment is performed. As in the case of the tank, it is difficult to increase the concentration of microorganisms, so the treatment efficiency is poor, and a large capacity facility is required.
【０００９】そこで、該酸醗酵槽の処理効率を向上させ
ることを目的として、槽内に酸醗酵菌を高濃度に付着さ
せるための充填材（微生物担体）を充填してなる生物膜
式の酸醗酵槽が提案されているが、このような生物膜式
の酸醗酵槽では微生物の増殖によって充填材層が閉塞さ
れ易いという問題がある。これを防止するために、酸醗
酵槽内に例えば空気を一時的に吹き込んで充填材層の曝
気洗浄を行なうことも考えられるが、空気による曝気で
は酸醗酵槽内が一時的に好気性条件下に置かれることと
なり、その結果酸醗酵菌の成育に悪影響を及ぼすという
問題がある。[0009] Therefore, for the purpose of improving the treatment efficiency of the acid fermentation tank, a biofilm type acid which is filled with a filler (microorganism carrier) for adhering the acid fermentation bacterium at a high concentration in the tank. Fermentation tanks have been proposed, but such a biofilm type acid fermentation tank has a problem that the filler layer is easily clogged by the growth of microorganisms. In order to prevent this, for example, it is possible to temporarily blow air into the acid fermentation tank to perform aeration cleaning of the packing material layer, but in the aeration with air, the inside of the acid fermentation tank is temporarily aerobic. Therefore, there is a problem that the growth of acid-fermenting bacteria is adversely affected as a result.
【００１０】本発明は、有機性排水を嫌気性微生物によ
り処理する場合の問題点を解決することを目的とするも
のである。An object of the present invention is to solve the problems in treating organic wastewater with anaerobic microorganisms.
【００１１】[0011]
【課題を解決するための手段及び作用】上記の目的を実
現するために本発明者は、特許請求の範囲の各請求項に
記載した本発明を完成した。In order to achieve the above object, the inventor of the present invention has completed the present invention described in each of the claims.
【００１２】本発明の有機性排水の嫌気性微生物による
処理装置は、有機物を含む排水を一時的に溜めて後段装
置への供給水量を一定に維持するための調整槽と、この
調整槽の一部として設けられるか又は独立して設けられ
て外気から遮断された密封型に設けられた酸醗酵槽と、
この酸醗酵槽の次段に設けられたメタン醗酵槽と、この
メタン醗酵槽で生成されるメタンガスを溜めるガスホル
ダーと、上記排水を調整槽から酸醗酵槽を経てメタン醗
酵槽へ供給するポンプ等の水供給手段とを備えていて、
上記の酸醗酵槽が、酸醗酵菌が付着する微生物担体（充
填材）が内部に充填された構造を有し、かつガスホルダ
ーからのガスを該微生物担体に曝気する手段が設けられ
ていることを特徴とする。The apparatus for treating organic wastewater with anaerobic microorganisms according to the present invention comprises an adjusting tank for temporarily collecting the wastewater containing organic substances to maintain a constant amount of water supplied to the subsequent apparatus, and one of the adjusting tanks. An acid fermentation tank provided as a part or provided independently and is provided in a hermetically sealed type that is shielded from the outside air,
A methane fermentation tank provided in the next stage of this acid fermentation tank, a gas holder for accumulating methane gas generated in this methane fermentation tank, a pump for supplying the above wastewater from the adjustment tank to the methane fermentation tank through the acid fermentation tank, etc. And the water supply means of
The above acid fermentation tank has a structure in which a microbial carrier (filler) to which the acid fermentation bacterium adheres is filled, and means for aerating gas from the gas holder to the microbial carrier is provided. Is characterized by.
【００１３】上記の酸醗酵槽は、調整槽の一部として設
けられるだけでなく、調整槽とは別個独立した形式で設
けられるものであってもよい。酸醗酵槽を曝気したメタ
ンガスは、エネルギー源の効率的な回収という観点から
すれば、曝気後のガスをガスホルダーに戻す手段を設け
ることが好ましい。The above-mentioned acid fermentation tank may be provided not only as a part of the adjusting tank but also as a separate unit from the adjusting tank. From the viewpoint of efficient recovery of the energy source, it is preferable to provide a means for returning the gas after aeration to the gas holder from the viewpoint of efficient recovery of the energy source.
【００１４】本発明の構成により、有機性排水の処理の
ために、原排水に含まれる有機物を低分子量の有機物あ
るいは有機酸に分解するための酸醗酵槽が、効率の優れ
た生物膜式の構成として採用され、しかも生物膜式の構
成を採用した場合の閉塞の不具合を、該槽の雰囲気を保
持するのに障害とならないようにメタンガスの洗浄曝気
で防止できる。According to the constitution of the present invention, an acid fermenter for decomposing organic matter contained in raw wastewater into a low molecular weight organic matter or organic acid for treatment of organic wastewater is a biofilm type with excellent efficiency. It is possible to prevent the problem of blockage, which is adopted as the structure and adopts the biofilm structure, by cleaning and aeration of methane gas so as not to hinder the atmosphere of the tank.
【００１５】[0015]
【実施例】以下本発明を図面に示す実施例に基づいて説
明する。第１図は本発明を適用した嫌気性微生物を用い
た有機性排水の処理装置を示したものであり、図におい
て１は既知と同様のＵＡＳＢ法の構造を有するメタン醗
酵槽、２は調整槽、４はこの調整槽２の一部として形成
された酸醗酵槽であり、調整槽２の水はポンプ３で酸醗
酵槽４に一定水量で供給され、また酸醗酵槽４からポン
プ５により一定水量でメタン醗酵槽１に供給される。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the embodiments shown in the drawings. FIG. 1 shows an organic wastewater treatment apparatus using anaerobic microorganisms to which the present invention is applied. In the figure, 1 is a methane fermentation tank having the same UASB method structure as known, and 2 is an adjustment tank. Reference numeral 4 denotes an acid fermentation tank formed as a part of the adjustment tank 2. The water in the adjustment tank 2 is supplied to the acid fermentation tank 4 at a constant amount by the pump 3, and the water from the acid fermentation tank 4 is fixed at the pump 5. The amount of water is supplied to the methane fermenter 1.
【００１６】メタン醗酵槽１で処理された処理水７は外
部に排出され、また生成されたメタンガスはガス送給管
６１を介してガスホルダー６に送られ、浮遊式カバー６
２の空間に保持される。この空間に保持されたメタンガ
スは適宜必要に応じてガス供給管６３から図示しないユ
ース側に供給される。The treated water 7 treated in the methane fermenter 1 is discharged to the outside, and the produced methane gas is sent to the gas holder 6 through the gas feed pipe 61, and the floating cover 6
It is held in the space of 2. The methane gas held in this space is appropriately supplied to the youth side (not shown) from the gas supply pipe 63 as needed.
【００１７】本例における上記の酸醗酵槽４は、調整槽
２の一部を密封式として設けることで構成されており、
更に内部に、例えば微生物担体である網目状のプラスチ
ックパイプを井桁状に多層に積み上げたブロック４１を
４つに仕切って設け、これらのブロックを順次に図の矢
印４２，４３，４４に示すように蛇行して原排水が通
り、この途中で微生物による酸醗酵の反応が行なわれる
ようになっている。The above-mentioned acid fermentation tank 4 in this example is constructed by providing a part of the adjusting tank 2 as a sealed type,
Further, provided inside is, for example, a block 41 in which mesh plastic pipes, which are microbial carriers, are piled up in multiple layers in a checkered pattern, and are divided into four blocks. The raw wastewater goes through meandering, and the acid fermentation reaction by microorganisms is carried out along the way.
【００１８】そして、本例のこの酸醗酵槽４に対して
は、上記微生物担体からなる充填材層の閉塞を防止する
ために、上記ガスホルダー６から洗浄ブロアー６４，開
閉弁６５を介してメタンガスが定期的かつ間欠的に導入
され、散気管４５から散気されるようになっているとい
う特徴がある。散気され酸醗酵槽４の上部空間４６に集
められたメタンガスは戻り管４７を通ってガスホルダー
６に戻される。With respect to the acid fermentation tank 4 of the present example, in order to prevent the packing material layer made of the microorganism carrier from being blocked, methane gas is supplied from the gas holder 6 through the cleaning blower 64 and the opening / closing valve 65. Is introduced periodically and intermittently, and the air is diffused from the air diffuser 45. The methane gas diffused and collected in the upper space 46 of the acid fermentation tank 4 is returned to the gas holder 6 through the return pipe 47.
【００１９】以上の構成を有する本例の装置によれば、
微生物担体である網目状のプラスチックパイプを井桁状
に多層に積み上げたブロック４１を充填した酸醗酵槽４
では、高濃度の微生物の付着状態が確保され、これによ
って比較的高分子の有機物が、比較的短い滞留時間のう
ちに酸醗酵菌と十分効率よく接触して有機酸あるいは低
分子の有機物に分解される。したがって次段のメタン醗
酵槽１において効率のよい嫌気性微生物による有機物の
分解が行なわれる。According to the apparatus of this example having the above configuration,
Acid fermenter 4 filled with a block 41 in which mesh-like plastic pipes, which are microbial carriers, are piled up in multiple layers in the shape of a cross.
In this way, a high concentration of microorganisms is ensured to be attached, which allows relatively high-molecular organic substances to contact the acid-fermenting bacteria sufficiently efficiently within a relatively short residence time to decompose them into organic acids or low-molecular organic substances. To be done. Therefore, in the methane fermenter 1 of the next stage, organic substances are efficiently decomposed by anaerobic microorganisms.
【００２０】試験例 （本発明法による実施例）食品工場の排水（平均ＣＯＤ
Cr濃度約２０００ｍｇ／ｌ）を、下記のように構成した
第１図の装置に通水して嫌気性微生物処理を行なった。Test Example (Example according to the method of the present invention) Wastewater from a food factory (average COD)
Cr concentration of about 2000 mg / l) was passed through the apparatus of FIG. 1 configured as follows to perform anaerobic microbial treatment.
【００２１】第１図装置の構成 メタン醗酵槽・・・・・・１ｍ×１．５ｍ×６ｍＨ（有効容積
９．０ｍ3 ） 調整槽 ・・・・・・容量８ｍ3 、但しそのうちの酸醗酵
槽部分の容量は３ｍ3 調整槽の原排水の滞留時間・・・・・・４時間（但しそのうち
網目状のプラスチックパイプを井桁状に積層充填した酸
醗酵槽部分で２時間） 酸醗酵槽のメタンガスによる曝気・・・・・・適宜 メタン醗酵槽の滞留時間・・・・・・６時間 以上の処理によってメタン醗酵槽１から排出される処理
水中の有機物濃度の変化を測定して第４図に示した（第
４図中の□点で示す）。FIG . 1 Structure of the apparatus Methane fermentation tank: 1 m × 1.5 m × 6 mH (effective volume 9.0 m 3 ) adjusting tank: Volume 8 m 3 , of which acid fermentation The capacity of the tank part is the retention time of the raw wastewater of the 3 m 3 adjustment tank ..... 4 hours (however, 2 hours at the acid fermentation tank part where the mesh-shaped plastic pipes are stacked and packed in a grid pattern). Aeration with methane gas ・ ・ ・ As appropriate Residence time of methane fermentor ・ ・ ・ ・ ・ ・ ・ ・ 6 hours Changes in organic matter concentration in treated water discharged from methane fermenter 1 by treatment for more than 6 hours Fig. 4 Is shown (indicated by a dot in FIG. 4).
【００２２】（従来法による比較例）比較のために、第
２図の装置を用い調整槽１２の容量を１０ｍ3 とし、こ
の調整槽１２における原排水の滞留時間を約７時間とな
るようにした他は同様にして処理を行ない、その結果を
上記本発明例と同様に測定して第４図に示した（第４図
中の＋点で示す）。(Comparative Example by Conventional Method) For comparison, the apparatus of FIG. 2 was used, the capacity of the adjusting tank 12 was set to 10 m 3, and the retention time of the raw waste water in this adjusting tank 12 was set to about 7 hours. Otherwise, the same treatment was carried out, and the result was measured in the same manner as in the above-mentioned example of the present invention and shown in FIG. 4 (indicated by + point in FIG. 4).
【００２３】これらの結果から、本発明法の場合は、酸
醗酵槽部分を含めた調整槽の容量（８ｍ3 ）が従来法の
場合の容量（１０ｍ3 ）の４／５と小さいにもかかわら
ず、メタン醗酵槽処理水の有機物濃度が従来法による比
較例に比べてかなり低く、処理効率が非常に高いことが
分かる。[0023] From these results, in the present invention method, the capacity of the adjustment tank, including acid fermentation tank portions (8m 3) is though small as 4/5 of the capacity of the conventional methods (10 m 3) However, it can be seen that the organic matter concentration of the methane fermenter treated water is considerably lower than that of the comparative example by the conventional method, and the treatment efficiency is very high.
【００２４】また、上記処理中、酸醗酵槽内の充填材層
が閉塞するようなこともなく、極めて順調に処理するこ
とができた。Further, during the above treatment, the filler layer in the acid fermentation tank was not clogged, and the treatment could be carried out extremely smoothly.
【００２５】[0025]
【発明の効果】本発明の装置によれば、以下のような効
果を奏する。The device of the present invention has the following effects.
【００２６】（イ） 酸醗酵槽を調整槽の一部として設
ける場合は、従来の酸醗酵槽を備えていない既存の設備
に本発明を適用して酸醗酵を効率よく行なわせることが
できる。(B) When the acid fermentation tank is provided as a part of the adjusting tank, the present invention can be applied to existing equipment not equipped with a conventional acid fermentation tank to efficiently carry out the acid fermentation.
【００２７】（ロ） 原排水中の有機物成分の変動があ
っても、調整槽あるいは独立した酸醗酵槽で該有機物成
分の殆どを有機酸に転換できるので、メタン醗酵槽にお
ける対象有機物の変動を少なくすることができ、したが
ってメタン醗酵槽における安定した処理を行なわせるこ
とができる。(B) Even if there is a change in the organic matter component in the raw waste water, most of the organic matter component can be converted to the organic acid in the adjusting tank or the independent acid fermentation tank. It is possible to reduce the amount, and thus to perform stable treatment in the methane fermenter.
【００２８】（ハ） 本発明の酸醗酵槽を設けてなく、
従来の調整作用のみの機能をはたす調整槽を設けていた
装置に比べ、調整槽での原排水の滞留時間を大幅に短く
出来るので、調整槽の容量や敷地面積を大幅に小さく出
来るという効果がある。(C) The acid fermentation tank of the present invention is not provided,
Compared to the conventional device that has an adjusting tank that only performs the adjusting function, the retention time of raw wastewater in the adjusting tank can be significantly shortened, so the capacity of the adjusting tank and the site area can be greatly reduced. is there.
【００２９】（ニ） 高濃度の微生物を保持できるよう
に充填材（微生物担体）を充填した酸醗酵槽を使用して
も、メタンガスで適宜曝気洗浄することで閉塞の不具合
を招くことがなく、処理効率の低下という問題がない。(D) Even if an acid fermenter filled with a filler (microorganism carrier) so as to retain a high concentration of microorganisms is used, it does not cause a problem of clogging by appropriately aeration cleaning with methane gas. There is no problem of reduction in processing efficiency.
【図１】本発明を適用した装置の構成概要一例を示した
フロー図。FIG. 1 is a flowchart showing an example of a schematic configuration of a device to which the present invention is applied.
【図２】従来の嫌気性微生物を用いた処理を行なう装置
の構成概要一例を示した図。FIG. 2 is a diagram showing an example of a schematic configuration of a device for performing processing using a conventional anaerobic microorganism.
【図３】従来の嫌気性微生物を用いた処理装置の他の構
成概要一例を示した図。FIG. 3 is a diagram showing an example of another configuration outline of a conventional processing apparatus using anaerobic microorganisms.
【図４】試験例におけるメタン醗酵槽処理水の有機物濃
度の経日変化の状態を示した図。FIG. 4 is a diagram showing a state of daily change in organic matter concentration of methane fermentation tank treated water in a test example.
１・・・メタン醗酵槽、２・・・調整槽、３，５・・・
ポンプ、４・・・酸醗酵槽、６・・・ガスホルダー、７
・・・処理水、４１・・・充填材ブロック、４５・・・
散気管、６４・・・洗浄ブロアー、６５・・・開閉弁、
４５・・・散気管。1 ... methane fermentation tank, 2 ... adjusting tank, 3, 5 ...
Pump, 4 ... Acid fermenter, 6 ... Gas holder, 7
... Treated water, 41 ... Filler block, 45 ...
Air diffuser, 64 ... Washing blower, 65 ... Open / close valve,
45 ... Air diffuser.
Claims (2)
装置への供給水量を一定に維持するための調整槽と、こ
の調整槽の一部として設けられるか又は次段に独立して
設けられた酸醗酵槽と、この酸醗酵槽の次段に設けられ
たメタン醗酵槽と、このメタン醗酵槽で生成されるメタ
ンガスを溜めるガスホルダーと、上記排水を上記調整槽
から酸醗酵槽を経てメタン醗酵槽へ供給するポンプ等の
水供給手段とを備えた有機性排水の嫌気性微生物による
処理装置において、 上記酸醗酵槽は、酸醗酵菌が付着する微生物担体が内部
に充填された構造に設けられると共に、上記ガスホルダ
ーからのガスを該微生物担体に曝気する手段が設けられ
ていることを特徴とする有機性排水の嫌気性微生物によ
る処理装置。1. An adjusting tank for temporarily collecting drainage water containing organic substances to maintain a constant amount of water supplied to a latter-stage device, and a adjusting tank provided as a part of the adjusting tank or independently provided in the next step. The acid fermentation tank, the methane fermentation tank provided in the next stage of the acid fermentation tank, the gas holder for storing the methane gas generated in the methane fermentation tank, and the drainage from the adjustment tank through the acid fermentation tank. In an apparatus for treating anaerobic microorganisms of organic wastewater, which is provided with a water supply means such as a pump for supplying to a methane fermenter, the acid fermenter has a structure in which a microbial carrier to which an acid fermenting bacterium adheres is filled. An apparatus for treating organic wastewater with anaerobic microorganisms, which is provided with means for aerating gas from the gas holder to the microorganism carrier.
メタンガスをガスホルダーに戻す手段を設けたことを特
徴とする有機性排水の嫌気性微生物による処理装置。2. The apparatus for treating organic wastewater with anaerobic microorganisms according to claim 1, further comprising means for returning methane gas aerated from the acid fermentation tank to a gas holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28995691A JP2925383B2 (en) | 1991-11-06 | 1991-11-06 | Anaerobic microorganism treatment equipment for organic wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28995691A JP2925383B2 (en) | 1991-11-06 | 1991-11-06 | Anaerobic microorganism treatment equipment for organic wastewater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05123693A true JPH05123693A (en) | 1993-05-21 |
| JP2925383B2 JP2925383B2 (en) | 1999-07-28 |
Family
ID=17749915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28995691A Expired - Fee Related JP2925383B2 (en) | 1991-11-06 | 1991-11-06 | Anaerobic microorganism treatment equipment for organic wastewater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2925383B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10118687A (en) * | 1996-10-22 | 1998-05-12 | Unitika Ltd | Treatment method of organic wastewater |
| US7452465B2 (en) | 2001-11-09 | 2008-11-18 | United Utilities Plc | Incubation treatment of sludge for pathogen reduction prior to digestion |
| JP2012076001A (en) * | 2010-09-30 | 2012-04-19 | Kuraray Co Ltd | Anaerobic wastewater treatment apparatus |
| JP2015199049A (en) * | 2014-04-10 | 2015-11-12 | 栗田工業株式会社 | Method and apparatus for biological treatment of organic waste water |
-
1991
- 1991-11-06 JP JP28995691A patent/JP2925383B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10118687A (en) * | 1996-10-22 | 1998-05-12 | Unitika Ltd | Treatment method of organic wastewater |
| US7452465B2 (en) | 2001-11-09 | 2008-11-18 | United Utilities Plc | Incubation treatment of sludge for pathogen reduction prior to digestion |
| JP2012076001A (en) * | 2010-09-30 | 2012-04-19 | Kuraray Co Ltd | Anaerobic wastewater treatment apparatus |
| JP2015199049A (en) * | 2014-04-10 | 2015-11-12 | 栗田工業株式会社 | Method and apparatus for biological treatment of organic waste water |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2925383B2 (en) | 1999-07-28 |
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