JPH0975075A - New microorganism, biological treatment of oil-containing waste water, carrier for attaching of microorganism and treating apparatus by fluidized carrier organism - Google Patents
New microorganism, biological treatment of oil-containing waste water, carrier for attaching of microorganism and treating apparatus by fluidized carrier organismInfo
- Publication number
- JPH0975075A JPH0975075A JP26099495A JP26099495A JPH0975075A JP H0975075 A JPH0975075 A JP H0975075A JP 26099495 A JP26099495 A JP 26099495A JP 26099495 A JP26099495 A JP 26099495A JP H0975075 A JPH0975075 A JP H0975075A
- Authority
- JP
- Japan
- Prior art keywords
- carrier
- oil
- microorganism
- waste water
- activated sludge
- 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
- 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
- Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Activated Sludge Processes (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、油分解性を有する
新規な微生物、含油排水の生物学的処理法及び処理装置
に関し、詳しくは、微生物を担体に付着させた担体活性
汚泥及び／又は造粒活性汚泥と含油排水を流動接触させ
る含油排水の生物学的処理方法及び処理装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel microorganism having oil degradability, a biological treatment method for oil-containing wastewater, and a treatment apparatus, and more specifically, a carrier activated sludge having a microorganism attached to a carrier and / or a production apparatus. TECHNICAL FIELD The present invention relates to a biological treatment method and a treatment device for oil-containing wastewater in which granular activated sludge and oil-containing wastewater are brought into fluid contact.
【０００２】有機汚染物質を含む食品加工排水、化学工
場排水、あるいは家庭排水などによる河川、湖沼、閉鎖
性海域などの汚染が、従来から環境保全上の問題点とし
て指摘されている。これらの排水中には蛋白質や炭水化
物とともに油脂が多量に含まれており、下水道の普及に
伴い、除害施設としての中間処理的な設備での対応が必
要になりつつある。[0002] Contamination of rivers, lakes, closed sea areas, etc. by food processing wastewater containing organic pollutants, chemical factory wastewater, domestic wastewater, etc. has been pointed out as a problem in terms of environmental protection. A large amount of oils and fats are contained in these wastewaters along with proteins and carbohydrates, and with the spread of sewerage, it is becoming necessary to use intermediate treatment equipment as a removal facility.
【０００３】一般に、有機性排水に対する生物学的処理
方法のうち、活性汚泥法は最も優れた方法として採用さ
れている。しかしながら、従来の標準的活性汚泥法で
は、排水中の油脂の処理に対しては余り効果がなく、処
理場における活性汚泥のの活性が油脂によって阻害さ
れ、処理水質が悪化して処理が困難になるなどの問題が
生じている。Of the biological treatment methods for organic wastewater, the activated sludge method is generally adopted as the most excellent method. However, the conventional standard activated sludge method has little effect on the treatment of fats and oils in wastewater, the activity of activated sludge in the treatment plant is inhibited by the fats and oils, and the quality of treated water deteriorates, making treatment difficult. There are problems such as becoming.
【０００４】この問題を解決する一つの方法として、流
動式担体活性汚泥法（流動式生物処理方法）が提案され
ている。この方法では、微生物を沈降性のよい砂、ゼオ
ライト、活性炭などの担体表面に付着させた担体活性汚
泥に酸素（空気）を供給しながら、流動下に排水と接触
させて排水の処理を行うものであり、比表面積の大きな
担体を用いることにより高い活性汚泥（微生物）濃度を
維持することができ、高負荷処理ができる特徴を有して
いる。As one method for solving this problem, a fluid type carrier activated sludge method (fluid type biological treatment method) has been proposed. This method treats wastewater by contacting it with wastewater while flowing while supplying oxygen (air) to the carrier activated sludge in which microorganisms are adhered to the surface of the carrier such as sand, zeolite, and activated carbon with good sedimentation property. Therefore, by using a carrier having a large specific surface area, a high activated sludge (microorganism) concentration can be maintained, and high load treatment is possible.
【０００５】流動式担体活性汚泥法を図１に示す基本的
な構造を有する処理装置（流動担体生物処理装置）に基
づいて説明する。処理装置（槽）（バイオリアクター）
は、底部がテーパー状に形成され、槽の中央部にエアリ
フト部が配置され、隔壁で担体循環部（反応槽）と担体
分離部（沈降槽）に仕切られている。槽内の担体（担体
活性汚泥）は、底部に設置された起動用散気装置により
流動化され、エアリフト部に吹き込まれた空気によりエ
アリフト内部を担体、水流が気泡とともに流動、循環
し、担体に付着した微生物に酸素が供給される。処理槽
に送られた排水は、担体循環部を循環しながら担体に付
着した微生物と接触して処理される。担体は担体分離部
で沈降分離され、処理済水は槽外へ排出される。The fluidized carrier activated sludge method will be described based on a treatment apparatus (fluidized carrier biological treatment apparatus) having a basic structure shown in FIG. Processing equipment (tank) (bioreactor)
Has a tapered bottom, an air lift is arranged in the center of the tank, and is partitioned by a partition into a carrier circulation section (reaction tank) and a carrier separation section (sedimentation tank). The carrier in the tank (carrier activated sludge) is fluidized by the starting air diffuser installed at the bottom, and the air blown into the air lift section causes the carrier inside the air lift to flow and circulate along with the air bubbles to become the carrier. Oxygen is supplied to the attached microorganisms. The wastewater sent to the treatment tank is treated by contacting the microorganisms attached to the carrier while circulating in the carrier circulation section. The carrier is settled and separated in the carrier separating section, and the treated water is discharged to the outside of the tank.
【０００６】担体への微生物の付着は、処理槽内で微生
物が付着していない担体と排水を流動、循環させながら
担体表面に微生物を自然発生的に付着させる方法、処理
槽に微生物が付着していない担体及び種汚泥を投入し、
排水を供給し汚泥を馴養しながら担体に微生物を付着さ
せる方法などがある。The adhesion of microorganisms to the carrier is carried out by spontaneously adhering the microorganisms to the surface of the carrier while flowing and circulating the carrier and the waste water in which the microorganisms are not adhered in the treatment tank. Add carrier and seed sludge
There is a method in which microorganisms are attached to the carrier while supplying waste water and acclimatizing sludge.
【０００７】流動式担体活性汚泥法では、担体として比
表面積の大きいものを選択することによって微生物付着
面積（Ａ）を増加させることができ、処理槽容積（Ｖ）
当りの（Ａ／Ｖ）を非常に大きくすることができるの
で、装置のコンパクト化が可能となる。この方法では、
通常の活性汚泥法で見られるバルキングも発生ぜず、汚
泥返送も不要であるので、運転管理が極めて容易であ
る。又、微生物が付着した担体は処理槽内で流動してい
るため、付着微生物層が一定の厚み以上に達すると、微
生物層は自動的に剥離し、微生物の過大成長による問題
も生じない。In the fluidized carrier activated sludge method, the microorganism adhesion area (A) can be increased by selecting a carrier having a large specific surface area, and the treatment tank volume (V) can be increased.
Since the (A / V) per hit can be made very large, the device can be made compact. in this way,
Since bulking, which is seen in the ordinary activated sludge method, does not occur and no sludge return is required, operation management is extremely easy. Further, since the carrier to which the microorganisms adhere is flowing in the processing tank, when the adhered microorganism layer reaches a certain thickness or more, the microorganism layer is automatically peeled off, and there is no problem due to overgrowth of the microorganisms.
【０００８】[0008]
【発明が解決しようとする課題】従来の含油排水処理技
術では、含油排水に無機系の凝集剤を添加し、油分をフ
ロックに吸着させて除去する方法が一般的な処理方法で
ある。この方法では、常に汚泥の発生を抱え、維持管理
上の大きな問題となっており、油分は最終的に焼却処分
することが必要であり、エネルギーを無駄に消費するだ
けでなく、地球環境上にも好ましい処理法ではない。
又、他の方法として、活性汚泥法や接触嫌気法を用いる
生物学的処理方法があるが、これらの処理方法では、余
剰汚泥の発生や前記のバルキングの発生、汚泥の返送等
の処理に経験を必要とする場合が多く、維持管理が大変
である。本発明の目的は、油分解性を有する新規な微生
物、上記の問題点が解消された流動式担体活性汚泥法に
よる含油排水の効率的処理法及び処理装置を提供するこ
とである。In the conventional oil-containing wastewater treatment technology, a general treatment method is to add an inorganic flocculant to the oil-containing wastewater and remove the oil by adsorbing the oil on flocs. With this method, sludge is always generated, which is a major problem in maintenance and management.The oil content must be finally incinerated, which not only wastes energy but also has a negative impact on the global environment. Is not the preferred method of treatment.
Other methods include biological treatment methods using the activated sludge method and contact anaerobic method, but with these treatment methods, experience in treatment of excess sludge generation, the above-mentioned bulking generation, sludge return, etc. Often required, maintenance is difficult. An object of the present invention is to provide a novel microorganism having oil degradability, an efficient treatment method and a treatment apparatus for oil-containing wastewater by a fluidized carrier activated sludge method in which the above problems are solved.
【０００９】[0009]
【課題を解決するための手段】上記の目的は以下の本発
明によって達せられる。即ち、本発明は、油分解性を有
するステノトロホモナス マルトフィリアＦＥＲＭ Ｐ
−１５１６２、微生物をクリノプチライトに付着させた
担体活性汚泥及び／又は造粒活性汚泥を流動下に、含油
排水と好気条件下に、接触させることを特徴とする含油
排水を生物学的に処理する方法、微生物を付着させる担
体及び流動担体生物処理装置である。The above object is achieved by the present invention described below. That is, the present invention provides an oil-degradable Stenotrophomonas maltophilia FERM P.
-15162, Biologically an oil-containing wastewater characterized in that a carrier-activated sludge having a microorganism attached to clinoptite and / or a granulated active sludge is brought into contact with the oil-containing wastewater under aerobic conditions under flow. A treatment method, a carrier to which microorganisms are attached, and a fluidized carrier biological treatment apparatus.
【００１０】[0010]
【発明の実施の形態】以下に好ましい実施形態を挙げて
本発明を更に詳しく説明する。本発明方法は、処理する
含油排水は特に限定されないが、動・植物油を含有する
厨房排水の処理に特に好適である。本発明方法は、特定
な担体に微生物を付着させた担体活性汚泥を使用し、前
記の流動担体活性汚泥法（流動式生物処理法）で含油排
水を処理することが特徴である。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail below with reference to preferred embodiments. The oil-containing wastewater to be treated in the method of the present invention is not particularly limited, but is particularly suitable for treating kitchen wastewater containing animal or vegetable oil. The method of the present invention is characterized in that a carrier-activated sludge in which microorganisms are attached to a specific carrier is used, and oil-containing wastewater is treated by the fluid carrier-activated sludge method (fluid-type biological treatment method).
【００１１】本発明では、含油排水の処理に活性汚泥を
使用するが、油分解菌を併用することによって処理効率
を高めることができる。油分解菌としては従来公知の菌
が使用できるが、以下に記す新規な油分解性菌の使用は
特に有効である。この油分解性新規微生物は下記の菌学
的性質を有し、ステノトロホモナス マルトフィリア属
の菌である。In the present invention, activated sludge is used for treating oil-containing wastewater, but the treatment efficiency can be improved by using oil-decomposing bacteria in combination. Although conventionally known bacteria can be used as the oil-degrading bacteria, the use of the novel oil-degrading bacteria described below is particularly effective. This novel oil-degrading microorganism has the following mycological properties and is a bacterium of the genus Stenotrophomonas maltophilia.
【００１２】[0012]
【表１】 [Table 1]
【００１３】[0013]
【表２】（表１の続き） [Table 2] (Continued from Table 1)
【００１４】[0014]
【表３】（表１の続き） [Table 3] (Continued from Table 1)
【００１５】[0015]
【表４】（表１の続き） [Table 4] (Continued from Table 1)
【００１６】上記表１に示す菌学的性質に基づいて、Ｂ
ｅｒｇｅｙ’Ｍａｎｕａｌ ｏｆＳｓｙｔｅｍａｔｉｃ
Ｂａｃｔｅｒｉｏｌｏｇｙ，Ｖｏｌ．１〜４（１９８
４〜１９８９）及びＩｎｔ．Ｊ．Ｓｙｓｔ．Ｂａｃｔｅ
ｒｉｏｌ．，Ｖｏｌ．４３，６０６（１９９３）で検討
した結果、ＫＭＦ−１０９株はステノトロホモナスマル
トフィリア属と同定し、ＦＥＲＭ Ｐ−１５１６２とし
て寄託されている。Based on the mycological properties shown in Table 1 above, B
ergey 'Manual of Ssystemematic
Bacteriology, Vol. 1-4 (198
4 to 1989) and Int. J. Syst. Bacte
riol. , Vol. 43,606 (1993), the KMF-109 strain was identified as Stenotrophomonas maltophilia and deposited as FERM P-15162.
【００１７】以下に、本発明の処理方法について説明す
る。本発明で使用する担体は、クリノプチライトであ
る。その平均粒径は、１ｍｍ以下が好ましく、更に好ま
しくは０．３〜０．８ｍｍである。又、クリノプチライ
トは、ＳｉＯ2 ／Ａｌ2 Ｏ3 （重量比）が５．４〜５．
５のものが好ましい。この担体への微生物の付着は、前
記の従来から行われている方法を用いることができ、特
に限定されないが、処理する排水で予め馴養した活性汚
泥を種汚泥として処理槽に投入し、あるいは処理槽内で
種汚泥を排水を処理しながら馴養させながら担体に付着
させる方法が好ましい。The processing method of the present invention will be described below. The carrier used in the present invention is clinoptite. The average particle diameter is preferably 1 mm or less, more preferably 0.3 to 0.8 mm. Further, clinoptite has a SiO 2 / Al 2 O 3 (weight ratio) of 5.4 to 5.
Five are preferred. The attachment of microorganisms to this carrier can be carried out by any of the above-mentioned conventional methods, and is not particularly limited, but the activated sludge that has been acclimated in advance with the wastewater to be treated is added to the treatment tank as seed sludge, or treated. A method is preferred in which the seed sludge is adhered to the carrier while acclimatizing while treating the wastewater in the tank.
【００１８】更に、本発明では処理槽に担体を投入し、
微生物を付着させる時期に油分解菌を添加することが処
理効果を高める上で好ましい。油分解菌は従来公知の菌
が使用できるが、好ましい菌は前記のステノトロホモナ
ス マルトフィリア属の菌ＫＭＦ−１０９である。ステ
ノトロホモナス マルトフィリア属の菌体を１０3 ｃｅ
ｌｌ／ｍｌ以上添加し、窒素成分を排水中のＣ／Ｎ比が
１０以上となるようにして担体に定着させることが好ま
しく、このようにすることによって排水中の油分を一層
効率よく処理することができる。Further, in the present invention, the carrier is put into the treatment tank,
It is preferable to add the oil-degrading bacteria at the time of attaching the microorganisms in order to enhance the treatment effect. As the oil-degrading bacterium, a conventionally known bacterium can be used, but a preferable bacterium is the above-mentioned Stenotrohomonas maltophilia bacterium KMF-109. Cells of Stenotrophomonas maltophilia genus 10 3 ce
It is preferable to add 11 / ml or more and fix the nitrogen component to the carrier so that the C / N ratio in the wastewater becomes 10 or more. By doing so, the oil content in the wastewater can be treated more efficiently. You can
【００１９】本発明では、担体活性汚泥として、造粒活
性汚泥を単独で、あるいは上記の担体活性汚泥とともに
使用することができる。造粒活性汚泥は、処理層に種汚
泥を投入し、流動循環させながら処理槽内で炭酸カルシ
ウムを生成させることによって得ることができる。種汚
泥は処理排水で馴養した活性汚泥を使用することが好ま
しい。In the present invention, as the carrier activated sludge, granulated activated sludge can be used alone or together with the above carrier activated sludge. The granulated activated sludge can be obtained by adding seed sludge to the treatment layer and producing calcium carbonate in the treatment tank while flowing and circulating. As the seed sludge, it is preferable to use activated sludge acclimatized with treated wastewater.
【００２０】本発明では、上記の担体活性汚泥及び／又
は造粒活性汚泥を、図１に示す基本構造を有する処理槽
（バイオリアクター）内で酸素の供給を受け、流動、循
環させながら含油排水と繰り返し接触させることによっ
て排水中の油脂が分解処理される。槽内のＭＬＶＳＳ
は、通常、３，０００〜１０，０００ｍｇ／ｌとなるよ
うに活性汚泥が投入され、担体に付着あるいは造粒され
る。In the present invention, the above carrier activated sludge and / or granulated activated sludge is supplied with oxygen in a treatment tank (bioreactor) having a basic structure shown in FIG. The oil and fat in the wastewater is decomposed by being repeatedly contacted with. MLVSS in the tank
In general, activated sludge is added so that the concentration becomes 3,000 to 10,000 mg / l, and the sludge is attached or granulated on a carrier.
【００２１】本発明で使用する処理槽は、エアリフト
部、空気吹き込み部、循環部及び担体分離部を基本要素
とする図１に示す基本構造を有する処理槽であればいず
れも使用することができる。好ましい処理槽は、エアリ
フト部の上部に逆円錐形の分散板を設け、微生物が付着
した担体と排水の混合物を、分散板を中心に放射状に均
一（等）に循環部に分散流動させることができるように
した処理槽である。一例を図２に示す。As the treatment tank used in the present invention, any treatment tank having the basic structure shown in FIG. 1 having an air lift portion, an air blowing portion, a circulation portion and a carrier separation portion as basic elements can be used. . A preferred treatment tank is provided with an inverted conical dispersion plate on the upper part of the air lift part, and a mixture of the carrier and the waste water on which the microorganisms are adhered can be uniformly and radially dispersed around the dispersion plate in a circulation part. It is a processing tank that is made possible. An example is shown in FIG.
【００２２】分散板１がエアリフト部の上部に設けられ
ていること以外は図１の装置と同じである。分散板１は
装置の蓋２に取り付けられており、エアリフト部３の上
部側周に設置した複数個の支持部材４の上端と分散板１
の周縁部が接するようになっている。装置の底部に設置
された空気導入管５より吹き込まれた空気によってエア
リフト部を上昇した微生物付着担体と排水の混合物は、
分散板１に衝突して分散板１を中心に放射状に循環部６
へ均等に戻され、排水と接触して処理が行われる。担体
分離部６で担体と分離された処理済水は排出管８から排
出される。処理される排水は装置上部の任意の場所より
装置へ供給される。分散板のサイズ、円錐角、エアリフ
ト部の上部の設置位置等は、特に限定されず、分散板に
よって微生物付着担体と排水の混合物が、循環部へ均等
に戻されるように装置のサイズに応じて最適となるよう
に設計し、設置することが望ましい。The apparatus is the same as that in FIG. 1 except that the dispersion plate 1 is provided above the air lift section. The dispersion plate 1 is attached to the lid 2 of the apparatus, and the dispersion plate 1 and the upper ends of a plurality of support members 4 installed on the upper side circumference of the air lift portion 3 are separated from each other.
The peripheral portions of are in contact with each other. The mixture of the microorganism-attached carrier and the waste water, which has been raised in the air lift portion by the air blown from the air introduction pipe 5 installed at the bottom of the device,
The circulating portion 6 collides with the dispersion plate 1 and radially around the dispersion plate 1.
Is evenly returned to and treated in contact with wastewater. The treated water separated from the carrier in the carrier separating unit 6 is discharged from the discharge pipe 8. Wastewater to be treated is supplied to the equipment from any place on the top of the equipment. The size of the dispersion plate, the cone angle, the installation position of the upper part of the air lift part, etc. are not particularly limited, and the mixture of the microorganism-attached carrier and the wastewater is uniformly returned to the circulation part by the dispersion plate, depending on the size of the device. It is desirable to design and install it optimally.
【００２３】本発明においては、含油排水を上記の処理
槽（バイオリアクター）で処理する前に、予め調整槽で
含油排水を曝気攪拌して水質の均一化を行うことによっ
て、処理槽での安定処理を維持することができるので、
含油排水を調整槽で前処理することが好ましい。In the present invention, before the oil-containing wastewater is treated in the above treatment tank (bioreactor), the oil-containing wastewater is aerated and agitated in the adjusting tank in advance to homogenize the water quality, thereby stabilizing the stability in the treatment tank. Because processing can be maintained
It is preferable to pretreat the oil-containing wastewater in the adjusting tank.
【００２４】[0024]
【実施例】次に実施例を挙げて本発明を具体的に説明す
る。 実施例１ 表５に示す模擬含油排水を、図１に示す構造の透明塩化
ビニル樹脂製のベンチプラント（循環部の容積２５リッ
トル、沈澱部の容積５リットル）を用い、表５に示す粒
径が１〜２ｍｍの種々の担体について微生物の付着状態
を比較した。ＢＯＤ負荷が２ｋｇ／ｍ3・日となるように
模擬含油排水の流入量を調整し、担体を循環部の模擬含
油排水に対して５重量％となるように１．２５ｋｇ添加
した。下水処理場の活性汚泥を種汚泥として１０００ｍ
ｇ／ｌ（ＭＬＶＳＳ）添加した。経時的に担体をサンプ
リングして超音波処理により付着微生物を剥離し、ＳＳ
を測定することにより付着微生物量を求めた。結果を表
６に示す。クリノプチライトに付着する微生物量が最大
であることが確認された。EXAMPLES Next, the present invention will be specifically described with reference to examples. Example 1 The particle size shown in Table 5 was obtained by using the simulated oil-containing wastewater shown in Table 5 with a bench plant made of a transparent vinyl chloride resin having the structure shown in FIG. 1 (volume of circulation part: 25 liters, volume of precipitation part: 5 liters). The state of attachment of microorganisms was compared for various carriers having a size of 1-2 mm. The inflow rate of the simulated oil-containing wastewater was adjusted so that the BOD load was 2 kg / m 3 · day, and 1.25 kg of the carrier was added to the simulated oil-containing wastewater of the circulation part so as to be 5% by weight. 1000m of activated sludge from sewage treatment plant as seed sludge
g / l (MLVSS) was added. The carrier is sampled over time and the adherent microorganisms are removed by ultrasonic treatment,
The amount of attached microorganisms was determined by measuring Table 6 shows the results. It was confirmed that the amount of microorganisms adhering to clinoptilolite was the maximum.
【００２５】[0025]
【表５】模擬含油排水の組成（ＢＯＤ１，０００ｍｇ／
ｌ） [Table 5] Composition of simulated oil-containing wastewater (BOD 1,000 mg /
l)
【００２６】[0026]
【表６】担体の種類と微生物の付着量 [Table 6] Type of carrier and amount of attached microorganisms
【００２７】クリノプチライトの粒径を変えて、上記と
同様にして微生物の付着量を測定した。結果を表７に示
す。粒径が０．３〜０．８ｍｍの場合が微生物の付着量
は最も多かった。The amount of microorganisms attached was measured in the same manner as above, while changing the particle size of clinoptite. Table 7 shows the results. When the particle size was 0.3 to 0.8 mm, the amount of attached microorganisms was the largest.
【００２８】[0028]
【表７】クリノプチライトの粒子径と微生物の付着量 [Table 7] Particle size of clinoptilolite and amount of attached microorganisms
【００２９】前記と同じベンチプラントを用い、ＢＯＤ
負荷が２ｋｇ／ｍ2・日となるように模擬含油排水の流入
量を調整し、粒径が０．３〜０．８ｍｍのクリノプチラ
イトを該排水に対して５重量％となるように添加した。
模擬含油排水は、表１の組成中のサラダ油の添加量を５
０、１５０、３００及び４５０ｍｇ／ｌの濃度に変えた
４種を用いた。活性汚泥は実験開始時に２，０００ｍｇ
／ｌ添加した。又、活性汚泥とともに油分解菌としてス
テノトロホモナス マルトフィリア属の菌株ＫＭＦ−１
０９を濃度を変えて添加した場合についても処理実験を
行った。以上の実験結果を表８に示す。Using the same bench plant as above, BOD
The inflow rate of the simulated oil-containing wastewater was adjusted so that the load was 2 kg / m 2 · day, and clinoptilite having a particle size of 0.3 to 0.8 mm was added so as to be 5% by weight to the wastewater. did.
For the simulated oil-containing wastewater, the addition amount of salad oil in the composition of Table 1 was 5
Four species were used with different concentrations of 0, 150, 300 and 450 mg / l. Activated sludge is 2,000 mg at the start of the experiment
/ L was added. Also, along with activated sludge, strain KMF-1 of Stenotrophomonas maltophilia as an oil-degrading bacterium
A treatment experiment was also performed when 09 was added at different concentrations. Table 8 shows the above experimental results.
【００３０】[0030]
【表８】 [Table 8]
【００３１】油分解菌としてステノトロホモナス マル
トフィリア属の菌株を添加することによって排水中の油
分の処理は促進され、油分解菌の添加量が１０3(cell/m
l)以上となると処理効果は著しく良好となる。この結果
はクリノプチライト担体へ上記の油分解菌の定着が確実
に起こり、その結果排水中の油分の処理が一層効果的に
行われたことを示している。By adding a strain of Stenotrohomonas maltophilia as an oil-decomposing bacterium, the treatment of oil in wastewater is promoted, and the addition amount of the oil-decomposing bacterium is 10 3 (cell / m 2).
l) or more, the treatment effect is remarkably good. This result indicates that the above oil-degrading bacteria were firmly established on the clinoptilolite carrier, and as a result, the oil component in the waste water was treated more effectively.
【００３２】実施例２ 図２に示す装置（循環部及び沈降部の容積は前記と同
じ）を用いる以外は上記と同様にして、上記の４種の模
擬含油排水の処理を行った。いずれの排水においても、
活性汚泥のみの場合及び活性汚泥に上記の油分解菌を添
加した場合とも、表８の処理結果より約１０〜１５％改
善された処理結果が得られた。この結果は、エアリフト
上部に設けた逆円錐形の分散板によってエアリフトを上
昇した担体活性汚泥が均等に循環部に戻され、排水との
接触が均一に行われていることを示している。Example 2 The above-mentioned four types of simulated oil-containing wastewater were treated in the same manner as above except that the apparatus shown in FIG. 2 (the volumes of the circulation section and the sedimentation section were the same as above). In any drainage,
Treatment results improved by about 10 to 15% from the treatment results shown in Table 8 were obtained both when the activated sludge was used alone and when the above oil-degrading bacteria were added to the activated sludge. The results show that the inverted cone-shaped dispersion plate provided on the upper part of the air lift causes the carrier activated sludge, which has been lifted by the air lift, to be uniformly returned to the circulation part and to be uniformly contacted with the waste water.
【００３３】[0033]
【発明の効果】以上の本発明によれば、担体への微生物
の付着が確実となり、含油排水の処理を効果的に行うこ
とができる。又、流動担体生物処理装置として、エアリ
フト部の上部に逆円錐形の分散板を設けた該装置を用い
ることによって、担体活性汚泥の循環部への戻しが均等
になり、含油排水の処理効果を更に向上させることがで
きる。As described above, according to the present invention, the adherence of microorganisms to the carrier is ensured, and the oil-containing wastewater can be effectively treated. Further, as the fluidized carrier biological treatment device, by using the device provided with an inverted cone-shaped dispersion plate on the upper part of the air lift part, the carrier activated sludge can be returned to the circulation part evenly, and the treatment effect of oil-containing wastewater can be improved. It can be further improved.
【図１】 流動担体生物処理装置の基本構造を示す図で
ある。FIG. 1 is a diagram showing a basic structure of a fluidized-bed biological treatment apparatus.
【図２】 本発明の流動担体生物処理装置の一例を示す
図である。FIG. 2 is a diagram showing an example of a fluidized-bed biological treatment apparatus of the present invention.
１：分散板 ２：蓋 ３：エアリフト部 ４：支持部材 ５：空気導入管 ６：循環部 ７：担体分離部 ８：処理済水排出口 ９：排水供給部 １０：固定部材 1: Dispersion plate 2: Lid 3: Air lift part 4: Support member 5: Air introduction pipe 6: Circulation part 7: Carrier separation part 8: Treated water discharge port 9: Waste water supply part 10: Fixing member
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ１２Ｎ 1/00 Ｃ１２Ｎ 1/00 Ｈ 11/16 11/16 //(Ｃ１２Ｎ 1/20 Ｃ１２Ｒ 1:01） ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI Technical display location C12N 1/00 C12N 1/00 H 11/16 11/16 // (C12N 1/20 C12R 1: 01)
Claims (6)
マルトフィリアＦＥＲＭ Ｐ−１５１６２。1. Stenotrohomonas oil-degradable
Martophilia FERM P-15162.
た担体活性汚泥及び／又は造粒活性汚泥を、流動下、好
気条件下に含油排水と接触させることを特徴とする含油
排水を生物学的に処理する方法。2. Biology of oil-containing wastewater, characterized in that carrier activated sludge and / or granulated active sludge in which microorganisms are attached to clinoptilolite are brought into contact with oil-containing wastewater under aerobic conditions under flow. How to deal with it.
油排水を生物学的に処理する方法。3. The method for biologically treating oil-containing wastewater according to claim 2, wherein an oil-degrading bacterium is also used.
フィリア属の菌である請求項３に記載の含油排水を生物
学的に処理する方法。4. The method for biologically treating oil-containing wastewater according to claim 3, wherein the oil-degrading bacterium is a bacterium of the genus Stenotrohomonas maltophilia.
とする微生物付着用担体。5. A carrier for adhering microorganisms, which is composed of clinoptilolite.
気条件下に排水と接触させて処理する、少なくともエア
リフト部、空気吹き込み部、循環部、担体分離部を有す
る流動担体生物処理装置において、エアリフト部上部に
逆円錐形の分散板を設けたことを特徴とする流動担体生
物処理装置。6. A fluidized carrier biological treatment apparatus having at least an air lift part, an air blowing part, a circulation part, and a carrier separation part, which treats a carrier having microorganisms attached thereto by contacting it with drainage under aerobic conditions under flow. In the above, the fluidized carrier biological treatment apparatus is characterized in that an inverse conical dispersion plate is provided on the upper portion of the air lift portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26099495A JP3708994B2 (en) | 1995-09-14 | 1995-09-14 | Biological treatment method of oil-containing wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26099495A JP3708994B2 (en) | 1995-09-14 | 1995-09-14 | Biological treatment method of oil-containing wastewater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0975075A true JPH0975075A (en) | 1997-03-25 |
| JP3708994B2 JP3708994B2 (en) | 2005-10-19 |
Family
ID=17355596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26099495A Expired - Fee Related JP3708994B2 (en) | 1995-09-14 | 1995-09-14 | Biological treatment method of oil-containing wastewater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3708994B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0857697A3 (en) * | 1997-02-06 | 1998-11-18 | Aquadetox GmbH | Process for the biological purificaiton of oil-loaded waste water |
| JP2007319787A (en) * | 2006-06-01 | 2007-12-13 | Asahi Organic Chem Ind Co Ltd | Method and apparatus for treating insoluble substance-containing waste water |
| JP2009279515A (en) * | 2008-05-22 | 2009-12-03 | Nittetsu Kankyo Engineering Kk | Method for introducing effective microorganism to activated sludge |
| CN108545837A (en) * | 2018-05-10 | 2018-09-18 | 东北电力大学 | The airlift reactor of the new trichosporon cutaneum processing purified soyabean oil waste water of cement skin shape |
-
1995
- 1995-09-14 JP JP26099495A patent/JP3708994B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0857697A3 (en) * | 1997-02-06 | 1998-11-18 | Aquadetox GmbH | Process for the biological purificaiton of oil-loaded waste water |
| JP2007319787A (en) * | 2006-06-01 | 2007-12-13 | Asahi Organic Chem Ind Co Ltd | Method and apparatus for treating insoluble substance-containing waste water |
| JP2009279515A (en) * | 2008-05-22 | 2009-12-03 | Nittetsu Kankyo Engineering Kk | Method for introducing effective microorganism to activated sludge |
| CN108545837A (en) * | 2018-05-10 | 2018-09-18 | 东北电力大学 | The airlift reactor of the new trichosporon cutaneum processing purified soyabean oil waste water of cement skin shape |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3708994B2 (en) | 2005-10-19 |
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