JP2985283B2 - Method and apparatus for treating low-concentration alcohol-containing wastewater - Google Patents
Method and apparatus for treating low-concentration alcohol-containing wastewaterInfo
- Publication number
- JP2985283B2 JP2985283B2 JP2303195A JP30319590A JP2985283B2 JP 2985283 B2 JP2985283 B2 JP 2985283B2 JP 2303195 A JP2303195 A JP 2303195A JP 30319590 A JP30319590 A JP 30319590A JP 2985283 B2 JP2985283 B2 JP 2985283B2
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- Japan
- Prior art keywords
- methane
- oxidizing bacteria
- immobilized
- concentration
- wastewater
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- 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.)
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Classifications
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- 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
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、低濃度アルコール含有廃水の処理方法及び
装置に係り、特に、包括固定化微生物を用いた廃水の処
理方法及び装置に関する。Description: TECHNICAL FIELD The present invention relates to a method and an apparatus for treating wastewater containing low-concentration alcohol, and more particularly to a method and an apparatus for treating wastewater using entrapped immobilized microorganisms.
最近、工業技術のハイテク化に伴い、低濃度のアルコ
ールを含有する廃水が排出されるようになった。特に、
半導体製造工場では、極めて純度の高い水（超純水）を
用いて洗浄を行っており、使用した廃水においても純度
が高く、これを回収し、再使用するのが有利である。2. Description of the Related Art Recently, with the advancement of industrial technology, wastewater containing a low concentration of alcohol has been discharged. Especially,
In a semiconductor manufacturing plant, cleaning is performed using extremely high-purity water (ultra-pure water). Even used wastewater has high purity, and it is advantageous to collect and reuse it.
このような廃水には工程で使用された溶剤が微量含ま
れており、従来は、紫外線照射による分解が行われてい
た。しかし、最近では、紫外線照射よりイニシャルコス
ト、ランニングコストが安価な生物処理が検討されてい
る。Such wastewater contains a trace amount of the solvent used in the process, and has conventionally been decomposed by ultraviolet irradiation. However, recently, biological treatments with lower initial cost and running cost than ultraviolet irradiation have been studied.
このような廃水に含まれるアルコールの量は、数mg/
であり、処理目標はμg/の単位である。The amount of alcohol contained in such wastewater is several mg /
And the treatment goal is in μg / unit.
須藤ら著「微生物固定化法による排水処理」、産業用
水調査会、151頁（1988年）の報告では、活性炭に付着
させた微生物を用い、流動床で処理したところ、原水TO
C3610μg/が処理水TOC443μg/まで処理されてい
る。この場合のTOC除去率は88％であり、除去率をさら
に向上させることが必要である。Sudo et al., "Wastewater treatment by microbial immobilization method", Industrial Water Research Committee, p. 151 (1988) reported that activated carbon was treated with fluidized bed using microorganisms attached to activated carbon.
C3610 μg / is treated up to 443 μg / TOC of treated water. In this case, the TOC removal rate is 88%, and it is necessary to further improve the removal rate.
この種の廃水を自然発生的な微生物又は活性汚泥を付
着させた活性炭を用いて処理すると、処理水中に菌体、
菌の代謝産物が流出し、除去率が高くならないことが原
因となる。菌の代謝産物としては、分子量10万以上の多
糖類、エンドトキシン物質などがある。When this type of wastewater is treated with naturally occurring microorganisms or activated carbon to which activated sludge is attached, bacteria,
The cause is that the metabolites of the fungus flow out and the removal rate does not increase. Metabolites of bacteria include polysaccharides having a molecular weight of 100,000 or more and endotoxin substances.
本発明は、前記従来技術の欠点を解消し、TOC除去率
を著しく向上させ、処理水中への微生物の混入や微生物
の代謝産物の混入をできるだけ少なくしうる低濃度アル
コール含有廃水の処理方法及び装置を提供することを目
的とする。The present invention solves the drawbacks of the prior art, significantly improves the TOC removal rate, and treats a low-concentration alcohol-containing wastewater treatment method and apparatus capable of minimizing contamination of microorganisms and metabolites of microorganisms in treated water as much as possible. The purpose is to provide.
本発明は、分子量分画が67,000以下の細孔を有する包
括固定化材を用い、アルコール成分を分解するメタン酸
化細菌を包括固定した固定化メタン酸化細菌を用いるこ
とによって上記目的を達成したものである。The present invention has achieved the above object by using an immobilized methane-oxidizing bacterium having a molecular weight fraction of 67,000 or less pores and having an immobilized methane-oxidizing bacterium that decomposes an alcohol component. is there.
すなわち、本発明による低濃度アルコール含有廃水の
処理方法は、TOC濃度30mg/以下のアルコール含有廃水
を固定化担体の内部にメタン酸化細菌を103〜106cells/
cm3−担体の濃度で包括固定した固定化メタン酸化細菌
を用いて処理することを特徴とする。本発明の方法は、
流動床式又は固定床式で実施することができ、本発明の
方法を実施するための処理装置は、底部に設けた散気装
置によって固定化メタン酸化細菌を流動させる曝気槽の
内部に処理水と固定化メタン酸化細菌とを分離するため
の固定化酵母分離網を設け、該分離網の処理水排出側に
曝気装置を設置したことを特徴とするもの、及び処理槽
内に固定化メタン酸化細菌を充填した固定床を設け、該
固定床内部に固定化メタン酸化細菌を取り出す装置を設
置したことを特徴とするものである。That is, the processing method of the low concentration alcohol-containing wastewater according to the present invention, TOC concentration 30 mg / following alcohol-containing wastewater within the immobilization carrier methane oxidizing bacteria 10 3 ~10 6 cells /
The treatment is carried out by using immobilized methane-oxidizing bacteria entrapped and fixed at a concentration of cm 3 -carrier. The method of the present invention comprises:
The treatment device for carrying out the method of the present invention may be a fluidized bed type or a fixed bed type.The treatment device is provided with treated water inside an aeration tank through which immobilized methane-oxidizing bacteria are flown by a diffuser provided at the bottom. An immobilized yeast separation network for separating immobilized methane-oxidizing bacteria from immobilized methane-oxidizing bacteria, and an aerator installed on the treated water discharge side of the separation network; A fixed bed filled with bacteria is provided, and a device for removing immobilized methane-oxidizing bacteria is provided inside the fixed bed.
本発明において使用しうるメタン酸化細菌としては、
例えば、メチロモナス・メタロオキシダンス（Methylom
onas metharooxidans）、メチロモナス・メタニカ（Met
hylomonas methanica）等が挙げられる。これらのメタ
ン酸化細菌は、メタノール、エタノール、イソプロパノ
ール等の低級アルコールを分解する分子量10万以上のデ
ヒドロゲナーゼ等の酵素を多量に分泌するものである。The methane oxidizing bacteria that can be used in the present invention include:
For example, Methylomonas metallooxidans (Methylom
onas metharooxidans), Methylomonas metanica (Met)
hylomonas methanica). These methane-oxidizing bacteria secrete a large amount of enzymes such as dehydrogenase having a molecular weight of 100,000 or more that degrade lower alcohols such as methanol, ethanol, and isopropanol.
本発明においては、上記のようなメタン酸化細菌を固
定化材で包括固定して用いる。固定化材としては、分画
分子量が67,000以下の細孔を持ち、材料からのTOC成分
の溶出がないポリウレタン、ポリビニルアルコール、ポ
リエチレングリコール、ポリアクリルアミドなどを使用
することができる。ゲルの分画分子量は、ゲルを構成す
る高分子物質の種類、その分子量及び特にゲル濃度に関
係し、ポリエチレングリコールゲル、ポリアクリルアミ
ドゲル及びポリビニルアルコールゲルでは、ゲル濃度９
〜18％で牛血清アルブミン、ミオグロビン等がゲル内部
に透過し、分画分子量が67,000以下であるものが得られ
る。In the present invention, the methane-oxidizing bacteria as described above are used by being comprehensively fixed with an immobilizing material. As the immobilizing material, polyurethane, polyvinyl alcohol, polyethylene glycol, polyacrylamide, or the like that has pores with a molecular weight cut off of 67,000 or less and does not elute the TOC component from the material can be used. The molecular weight cut off of the gel is related to the type of polymer material constituting the gel, its molecular weight, and particularly the gel concentration. In the case of polyethylene glycol gel, polyacrylamide gel and polyvinyl alcohol gel, the gel concentration is 9%.
At ~ 18%, bovine serum albumin, myoglobin and the like permeate into the gel, and those having a molecular weight cut off of 67,000 or less are obtained.
このように、本発明においては、廃水中のメタノー
ル、エタノール、イソプロパノール等のアルコールを分
解する分子量10万以上のデヒドロゲナーゼ等の酵素を多
量に分泌するメタン酸化細菌を分画分子量が67,000以下
の細孔を持つ包括固定化材で固定化することにより、固
定化担体内部で菌体外酵素、例えば、デヒドロゲナーゼ
等の保持量を多くし、アルコールの分解を促進するもの
である。この場合、酵素の触媒反応が主な反応であり、
酵素を補うメタン酸化細菌の増殖反応が若干起こる。そ
の際メタン酸化細菌が産生する多糖類、エンドトキシン
等のTOC成分は分子量が大きく、担体外に流出せず、細
菌細胞自体も担体外に流出しないため、処理水のTOCは
著しく低下する。As described above, in the present invention, methanol, ethanol, and methane-oxidizing bacteria that secrete large amounts of enzymes such as dehydrogenase having a molecular weight of 100,000 or more that decompose alcohols such as methanol, ethanol, and isopropanol are fractionated with a molecular weight of 67,000 or less. By immobilizing with the entrapping immobilizing material having the above, the amount of extracellular enzymes, for example, dehydrogenase, etc. held inside the immobilization carrier is increased, and the decomposition of alcohol is promoted. In this case, the catalytic reaction of the enzyme is the main reaction,
Some growth reaction of methane-oxidizing bacteria that supplements the enzyme occurs. At that time, the TOC components such as polysaccharides and endotoxin produced by the methane-oxidizing bacteria have a large molecular weight and do not flow out of the carrier, and the bacterial cells themselves do not flow out of the carrier, so that the TOC of the treated water is significantly reduced.
次に、本発明の方法を実施する装置について説明す
る。第１図及び第２図は、本発明による低濃度アルコー
ル含有廃水の処理装置の実施例を示すものである。Next, an apparatus for performing the method of the present invention will be described. FIGS. 1 and 2 show an embodiment of a treatment apparatus for wastewater containing low-concentration alcohol according to the present invention.
第１図は、本発明の流動床式の処理装置の系統図であ
る。この装置は、主として、曝気槽１、散気装置５及び
固定化メタン酸化細菌分離網６から構成されている。曝
気槽１には、廃水導入管３と共に処理水排出管４が配管
されている。曝気槽１には、さらに、槽内に空気を供給
する散気装置５が配管されており、この散気装置５は図
示しない送気ポンプ等と接続されている。曝気槽１の側
方の処理水排出管４付近には、固定化メタン酸化細菌分
離網６が取り付けられ、固定化メタン酸化細菌７が処理
水排出管４に流出しないように構成されている。さら
に、固定化メタン酸化細菌分離網６の処理水排出側に
は、曝気装置８が設置されており、処理水の排出部付近
に微生物が堆積しないように構成されている。FIG. 1 is a system diagram of a fluidized bed type processing apparatus of the present invention. This apparatus is mainly composed of an aeration tank 1, a diffuser 5, and an immobilized methane-oxidizing bacteria separation network 6. The aeration tank 1 is provided with a treated water discharge pipe 4 together with a waste water introduction pipe 3. The aeration tank 1 is further provided with a diffuser 5 for supplying air into the tank, and the diffuser 5 is connected to a not-shown air supply pump or the like. An immobilized methane-oxidizing bacteria separation network 6 is attached near the treated water discharge pipe 4 on the side of the aeration tank 1 so that the immobilized methane-oxidizing bacteria 7 does not flow out to the treated water discharge pipe 4. Further, an aeration device 8 is provided on the treated water discharge side of the immobilized methane-oxidizing bacteria separation network 6, so that microorganisms are not deposited near the treated water discharge portion.
また、第２図に示した装置は、固定床式の処理装置で
あり、主として処理槽11と固定化メタン酸化細菌取り出
し管15から構成されている。処理槽11には、廃水導入管
３と共に処理水排出管４が配管されている。処理槽11の
側面には、固定化メタン酸化細菌取り出し管15が接続さ
れており、メタン酸化細菌の増殖により固定化メタン酸
化細菌のメタン酸化細菌量が一定量より多くなったと
き、メタン酸化細菌量の多い固定化メタン酸化細菌層を
取り出し、新しい固定化メタン酸化細菌を補充する。The apparatus shown in FIG. 2 is a fixed-bed type processing apparatus, which mainly includes a processing tank 11 and an immobilized methane-oxidizing bacteria take-out tube 15. The treatment tank 11 is provided with a treated water discharge pipe 4 together with the wastewater introduction pipe 3. An immobilized methane-oxidizing bacterium take-out tube 15 is connected to the side of the treatment tank 11, and when the amount of methane-oxidizing bacterium of the immobilized methane-oxidizing bacterium becomes larger than a certain amount due to the growth of the methane-oxidizing bacterium, Remove the large layer of immobilized methane-oxidizing bacteria and replace with new immobilized methane-oxidizing bacteria.
本発明においては、固定化メタン酸化細菌内のメタン
酸化細菌量は、103〜106cells/cm3−担体であることが
必要であり、103cells/cm3−担体未満では、アルコール
分解速度が遅く、106cells/cm3−担体を越えると、担体
表面にメタン酸化細菌が露出しやすく、処理水中にメタ
ン酸化細菌や代謝産物が流出するため、処理水質が悪化
してしまう。In the present invention, the amount of methane oxidizing bacteria in the immobilized methane oxidizing bacteria is required to be 10 3 to 10 6 cells / cm 3 − carrier, and when the amount is less than 10 3 cells / cm 3 − carrier, alcohol decomposition is performed. When the speed is slow and exceeds 10 6 cells / cm 3 -carrier, methane-oxidizing bacteria are likely to be exposed on the surface of the carrier, and methane-oxidizing bacteria and metabolites flow out into the treated water, thus deteriorating the quality of the treated water.
なお、本発明においては、TOC濃度30mg/の廃水を対
象とするが、これより高いTOC濃度の廃水に本発明を適
用すると、ペレット内部の菌の増殖が大きく、ペレット
外に菌が露出しやすくなるおそれがあり、適さない。In the present invention, wastewater with a TOC concentration of 30 mg / is targeted.However, when the present invention is applied to wastewater with a higher TOC concentration, the growth of bacteria inside the pellet is large, and the bacteria are easily exposed outside the pellet. There is a risk of becoming unsuitable.
次に、実施例に基づいて本発明を詳述するが、本発明
はこれに限定されるものではない。Next, the present invention will be described in detail based on examples, but the present invention is not limited thereto.
実施例１ Ｔ社から排出されるTOC30mg/の廃水を用いて処理実
験を行った。メチロモナス・メタロオキシダンス（Meth
ylomonas metharooxidans）を10〜109cells/cm3−担体
の範囲の様々な濃度で固定化した。固定化は、アクリル
アミド18％、N,N′−メチレンビスアクリルアミド１
％、N,N,N′,N′−テトラメチルエチレンジアミン0.5％
及び過硫酸カリウム0.25％を用いてゲル化させて行い、
3mm角の立方体に成形した。Example 1 A treatment experiment was performed using wastewater of 30 mg / TOC discharged from Company T. Methylomonas metallooxidans (Meth
ylomonas metharooxidans) were immobilized at various concentrations ranging from 10 to 10 9 cells / cm 3 -carrier. For immobilization, acrylamide 18%, N, N'-methylenebisacrylamide 1
%, N, N, N ', N'-tetramethylethylenediamine 0.5%
And gelation using 0.25% potassium persulfate.
It was formed into a 3 mm square cube.
こうして得た固定化メタン酸化細菌10cm3及びＴ社の
廃水190mlを坂口フラスコに入れ、振とう培養し、培養3
0分後、固定化メタン酸化細菌を網で分離して処理水を
流出させた。この処理水のTOC値を測定し、結果を第３
図に示す。第３図から明らかなとおり、103cells/cm3−
担体より細菌量が多くなると、急激に処理水のTOC濃度
が低下し、104〜106cells/cm3−担体の範囲でTOC0.5mg/
以下となり、103〜106cells/cm3−担体の範囲で除去
率96％以上が達成された。メタン酸化細菌量が多すぎる
と、固定化時にゲル表面にメタン酸化細菌が露出しやす
く、処理水中にメタン酸化細菌、多糖類などの代謝産物
が多くなり、TOC値が悪化した。逆に、メタン酸化細菌
量が少ないと、廃水中のアルコールの分解速度が遅く、
TOC除去率が低くなる。10 cm 3 of the immobilized methane-oxidizing bacteria thus obtained and 190 ml of wastewater from Company T were placed in a Sakaguchi flask, and cultured with shaking.
After 0 minutes, the immobilized methane-oxidizing bacteria were separated by a net, and the treated water was allowed to flow out. The TOC value of this treated water was measured, and the
Shown in the figure. As is clear from FIG. 3 , 10 3 cells / cm 3 −
When the bacterial load is more than the carrier, it reduces the TOC concentration rapidly treated water, 10 4 ~10 6 cells / cm 3 - TOC0.5mg range of carrier /
Below, a removal rate of 96% or more was achieved in the range of 10 3 to 10 6 cells / cm 3 −carrier. When the amount of methane-oxidizing bacteria was too large, the methane-oxidizing bacteria were easily exposed on the gel surface during immobilization, and the metabolites such as methane-oxidizing bacteria and polysaccharides increased in the treated water, resulting in a deterioration of the TOC value. Conversely, when the amount of methane-oxidizing bacteria is small, the decomposition rate of alcohol in wastewater is slow,
The TOC removal rate is low.
実施例２ 第１図に示した処理装置を用い、曝気槽１の容量200
のベンチプラントを用い、実施例１で作成した104cel
ls/cm3−担体の固定化メタン酸化細菌を曝気槽１内に６
容量％充填し、TOC濃度10mg/のＴ社廃水を処理したと
ころ、滞留時間30分でTOC240μg/の処理水を得た。Example 2 The processing apparatus shown in FIG.
10 4 cel prepared in Example 1 using a bench plant of
ls / cm 3- Immobilized methane-oxidizing bacteria on carrier 6 in aeration tank 1
The wastewater was filled with volume% and treated with wastewater from Company T having a TOC concentration of 10 mg /. As a result, treated water with a TOC of 240 μg / was obtained in a residence time of 30 minutes.
比較例１ 実施例２において、固定化メタン酸化細菌の代わりに
活性炭を10容量％充填し、同じメタン酸化細菌を付着さ
せて、104cells/mlとしたものを６投入し、連続運転
したところ、滞留時間30分で得られた処理水のTOC濃度
は1.8mg/であった。When Comparative Example 1 Example 2, the activated carbon was filled 10% by volume in place of the immobilized methane oxidizing bacteria, by attaching the same methane oxidizing bacteria, what was 10 4 cells / ml and 6 on, and continuous operation The TOC concentration of the treated water obtained at a residence time of 30 minutes was 1.8 mg /.
比較例２ 比較例１において、メタン酸化細菌の代わりに1000mg
/の活性汚泥を１投入し、連続運転したところ、滞
留時間30分で得られた処理水のTOC濃度は2.5mg/であ
った。Comparative Example 2 In Comparative Example 1, 1000 mg was used instead of the methane-oxidizing bacteria.
When activated sludge of 1 / was charged and continuously operated, the TOC concentration of the treated water obtained at a residence time of 30 minutes was 2.5 mg /.
実施例３ 第２図に示した処理装置の処理槽11の容量200のベ
ンチプラントを用いて実施例１で作成した103cells/cm3
−担体の固定化メタン酸化細菌を30容量％充填し、TOC
濃度1mg/のＮ社の廃水を処理したところ、滞留時間20
分でTOC濃度90μg/の処理水を得ることができた。Example 3 10 3 cells / cm 3 prepared in Example 1 using a bench plant having a capacity of 200 in the processing tank 11 of the processing apparatus shown in FIG.
-Carrier immobilized 30% by volume filled with methane-oxidizing bacteria, TOC
Treatment of wastewater from company N with a concentration of 1 mg /
In 90 minutes, treated water with a TOC concentration of 90 μg / was obtained.
固定化メタン酸化細菌の菌体量が107cells/cm3−担体
以上になると、水質が悪化するため、固定化メタン酸化
細菌取り出し管15から担体量の多い固定化メタン酸化細
菌層を採取し、新しい固定化メタン酸化細菌を補充し
た。If the bacterial mass of the immobilized methane-oxidizing bacteria exceeds 10 7 cells / cm 3 −carrier, the water quality deteriorates. , Supplemented with new immobilized methane-oxidizing bacteria.
本発明の方法及び装置によれば、流動床式でも固定床
式でも廃水中のアルコール成分を効率よく容易に分解で
き、処理水中に微生物や微生物の代謝産物の混入を極め
て少なくすることができ、高いTOC除去率を容易に達成
でき、高い処理水質を得ることができる。According to the method and apparatus of the present invention, the alcohol component in the wastewater can be efficiently and easily decomposed even in the fluidized bed type or the fixed bed type, and the contamination of microorganisms and metabolites of microorganisms in the treated water can be extremely reduced. High TOC removal rate can be easily achieved, and high treated water quality can be obtained.
第１図は本発明の一実施態様を示す処理装置の略示系統
図、第２図は本発明の別の実施態様を示す処理装置の略
示系統図、第３図は担体内部のメタン酸化細菌量と処理
水のTOC濃度との関係を示すグラフである。 符号の説明 １……曝気槽、４……処理水排出管、５……散気装置、
６……固定化メタン酸化細菌分離網、７……固定化メタ
ン酸化細菌、８……曝気装置、11……処理槽、15……固
定化メタン酸化細菌取り出し管FIG. 1 is a schematic diagram of a processing apparatus showing one embodiment of the present invention, FIG. 2 is a schematic diagram of a processing apparatus showing another embodiment of the present invention, and FIG. 3 is methane oxidation inside a carrier. It is a graph which shows the relationship between the amount of bacteria and the TOC concentration of treated water. DESCRIPTION OF SYMBOLS 1 ... aeration tank, 4 ... treated water discharge pipe, 5 ... diffuser,
6 ... immobilized methane-oxidizing bacteria separation network, 7 ... immobilized methane-oxidizing bacteria, 8 ... aeration device, 11 ... treatment tank, 15 ... immobilized methane-oxidizing bacteria extraction tube
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｃ１２Ｎ 1/20 Ｃ１２Ｎ 1/20 Ｄ 11/00 11/00 (56)参考文献 特開 昭62−273099（ＪＰ，Ａ) 特開 昭64−18497（ＪＰ，Ａ) 実開 昭63−115493（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) C02F 3/34 C02F 3/00 - 3/12 C12N 11/00 - 11/18 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification symbol FI C12N 1/20 C12N 1/20 D 11/00 11/00 (56) References JP-A-62-273099 (JP, A) Opened 64-6497 (JP, A) Opened open 63-115493 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) C02F 3/34 C02F 3/00-3/12 C12N 11/00-11/18
Claims (2)
水を、固定化担体の内部にメタン酸化細菌を103〜106ce
lls/cm3−担体の濃度で包括固定した固定化メタン酸化
細菌を用いて処理することを特徴とする低濃度アルコー
ル含有廃水の処理方法。1. An alcohol-containing wastewater having a TOC concentration of 30 mg / or less, and methane oxidizing bacteria of 10 3 to 10 6 ce inside an immobilization carrier.
A method for treating low-concentration alcohol-containing wastewater, wherein the treatment is carried out using immobilized methane-oxidizing bacteria which are entrapped at a concentration of lls / cm 3 -carrier.
て、底部に設けた散気装置によって前記固定化メタン酸
化細菌を流動させる曝気槽の内部に処理水と前記固定化
メタン酸化細菌とを分離するための固定化メタン酸化細
菌分離網を設置したことを特徴とする低濃度有機物含有
廃水の処理装置。2. An apparatus for carrying out the method according to claim 1, wherein treated water and said immobilized methane oxidizing bacteria are introduced into an aeration tank through which said immobilized methane oxidizing bacteria are flown by an aeration device provided at the bottom. An apparatus for treating wastewater containing low-concentration organic matter, comprising an immobilized methane-oxidizing bacteria separation network for separation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2303195A JP2985283B2 (en) | 1990-11-08 | 1990-11-08 | Method and apparatus for treating low-concentration alcohol-containing wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2303195A JP2985283B2 (en) | 1990-11-08 | 1990-11-08 | Method and apparatus for treating low-concentration alcohol-containing wastewater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04176396A JPH04176396A (en) | 1992-06-24 |
| JP2985283B2 true JP2985283B2 (en) | 1999-11-29 |
Family
ID=17918025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2303195A Expired - Fee Related JP2985283B2 (en) | 1990-11-08 | 1990-11-08 | Method and apparatus for treating low-concentration alcohol-containing wastewater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2985283B2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102030417A (en) * | 2010-11-01 | 2011-04-27 | 黄虹寓 | Method for performing hydrolytic treatment on waste liquid during production of biofuel ethanol |
| JP5628955B2 (en) * | 2013-03-29 | 2014-11-19 | 水ｉｎｇ株式会社 | Organic waste water treatment apparatus and treatment method |
| JP6505545B2 (en) * | 2015-08-19 | 2019-04-24 | クボタ環境サ−ビス株式会社 | Reactor for biological treatment, operation method of biological reactor, and water treatment equipment |
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1990
- 1990-11-08 JP JP2303195A patent/JP2985283B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04176396A (en) | 1992-06-24 |
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