JP3025964B1 - Removal method of nitrogen from water containing nitrate nitrogen and denitrification bioreactor - Google Patents
Removal method of nitrogen from water containing nitrate nitrogen and denitrification bioreactorInfo
- Publication number
- JP3025964B1 JP3025964B1 JP4471599A JP4471599A JP3025964B1 JP 3025964 B1 JP3025964 B1 JP 3025964B1 JP 4471599 A JP4471599 A JP 4471599A JP 4471599 A JP4471599 A JP 4471599A JP 3025964 B1 JP3025964 B1 JP 3025964B1
- Authority
- JP
- Japan
- Prior art keywords
- membrane
- hydrogen donor
- nitrogen
- denitrification
- bioreactor
- 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 - Fee Related
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Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Landscapes
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
【要約】
【課題】脱窒バイオリアクターを任意の場所に（嫌気槽
以外の場所にも）設置可能とし、かつ、カートリッジ式
として単体で反復使用可能とする。
【解決手段】水素供与体透過膜11表面に溶存酸素の遮断
層12を積層形成した膜体構造により、水素供与体透過膜
11表面に発生する生物膜を膜体内で嫌気環境下に維持
し、脱窒反応の活性化を増補する。脱窒バイオリアクタ
ーＸは硝酸性窒素含有水中で水素供与体（メタノール）
２を封入した閉区画を形成可能で、単体で反復使用可能
なカートリッジ式の膜体容器１からなり、少なくとも１
区画壁を水素供与体透過膜（ポリエチレン膜）11により
形成し、かつ、その膜表面に不織布121 をラミネート又
は被覆して溶存酸素の遮断層（空気遮断膜）12を積層形
成した膜体構造を有する。A denitrification bioreactor can be installed at an arbitrary place (in a place other than an anaerobic tank) and can be used repeatedly as a single cartridge type. A hydrogen donor permeable membrane is formed by laminating a dissolved oxygen barrier layer on the surface of a hydrogen donor permeable membrane.
11 Maintain the biofilm generated on the surface in an anaerobic environment within the film to enhance the activation of the denitrification reaction. Denitrification bioreactor X is a hydrogen donor (methanol) in water containing nitrate nitrogen.
2 comprises a cartridge-type membrane container 1 capable of forming a closed compartment enclosing the same and which can be repeatedly used alone.
A membrane structure in which a partition wall is formed by a hydrogen donor permeable membrane (polyethylene membrane) 11 and a nonwoven fabric 121 is laminated or coated on the membrane surface and a dissolved oxygen barrier layer (air barrier membrane) 12 is laminated. Have.
Description
【０００１】[0001]
【本発明の属する技術分野】本発明は、膜分離脱窒をお
こなうバイオリアクター、すなわち水素供与体と膜分離
された脱窒菌による硝酸性窒素含有水中の窒素除去方
法、及び脱窒バイオリアクターに関する。なお、バイオ
リアクターは、生物〔本発明に関し脱窒菌〕の持ってい
る機能の一部を利用して穏和な条件で効率よく反応〔同
じく脱窒反応〕をおこなわせる反応容器の謂である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bioreactor for performing membrane separation and denitrification, that is, a method for removing nitrogen from nitrate nitrogen-containing water using a hydrogen donor and a membrane-separated denitrifying bacterium, and a denitrification bioreactor. The bioreactor is a so-called reaction vessel that can efficiently perform a reaction (similarly, a denitrification reaction) under mild conditions by utilizing a part of the function of an organism [denitrifying bacteria in the present invention].
【０００２】[0002]
【従来の技術】工場排水、事業所排水、生活排水等から
流出する窒素は河川、沼湖、海などの閉鎖性水域に富栄
養化を招くことからプランクトンやその他の生物の異常
発生を招き、自然破壊を起こしている。この富栄養化の
防止・改善するために、排水中から窒素を除去すること
が求められている。2. Description of the Related Art Nitrogen effluent from factory effluents, business effluents, domestic effluents, etc. causes eutrophication in enclosed water bodies such as rivers, lakes, lakes and the sea, causing abnormal occurrence of plankton and other organisms. It is causing natural destruction. In order to prevent and improve this eutrophication, it is required to remove nitrogen from wastewater.
【０００３】しかし、従来の窒素除去方法（硝化脱窒
法）は、脱窒が嫌気環境下に限って起こるために、図４
に示すように、嫌気槽中で硝酸性窒素含有水に直接水素
供与体を投入し（混合脱窒）、脱窒を行わせるものであ
り、嫌気槽の建設及び、脱窒後は過剰な水素供与体を別
途除去する必要があった。However, in the conventional nitrogen removal method (nitrification and denitrification method), since the denitrification occurs only in an anaerobic environment, FIG.
As shown in (1), a hydrogen donor is directly injected into the nitrate-nitrogen-containing water in an anaerobic tank (mixed denitrification) to perform denitrification. The donor had to be removed separately.
【０００４】このように、従来の窒素除去方法では、大
規模な設備（嫌気槽）、過剰な水素供与体の処理などが
必要であり、多大の費用がかかるため、結果的に窒素除
去対策が行われていないという問題があった。As described above, the conventional nitrogen removal method requires large-scale equipment (anaerobic tank), treatment of an excessive hydrogen donor, and the like, and requires a great deal of cost. There was a problem that was not done.
【０００５】こうしたなかで、膜分離脱窒をおこなうバ
イオリアクター、すなわち水素供与体と膜分離された脱
窒菌による硝酸塩含有水中の窒素除去方法、及び脱窒バ
イオリアクターの提案があった。〔特開平１０−３２３
６９４号；以下、先行技術。〕[0005] Under these circumstances, there has been proposed a bioreactor for performing membrane separation and denitrification, that is, a method for removing nitrogen from nitrate-containing water by a hydrogen donor and a membrane-separated denitrifying bacterium, and a denitrification bioreactor. [JP-A-10-323
694; hereinafter, prior art. ]
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記先
行技術においても、適用水域が硝酸塩を含有すること、
及び無酸素状態（溶存酸素ゼロ）の嫌気槽であることを
前提としているので、適用水域の拡大（制限解消）とい
う点では用途限定的であり改善の余地があった。However, even in the above prior art, the application water area contains nitrate,
Since it is assumed that the anaerobic tank is in an anoxic state (zero dissolved oxygen), the application is limited in terms of expanding the applicable water area (resolving restrictions), and there is room for improvement.
【０００７】本発明はこのような事情に鑑みなされたも
のであって、上記課題を解消し、水素供与体を封入した
膜体容器の周りを嫌気環境下に維持することにより、任
意の場所に（嫌気槽以外の場所にも）設置可能とし、か
つ、カートリッジ式のバイオアクターとして単体で使用
することにより、脱窒を単体装置レベルで進行させ、嫌
気槽の建設などの費用を削減可能な硝酸性窒素含有水中
の窒素除去方法、及び脱窒バイオリアクターを提供する
ものである。[0007] The present invention has been made in view of such circumstances, and solves the above-mentioned problems, and maintains the periphery of a membrane container enclosing a hydrogen donor in an anaerobic environment, so that it can be installed in an arbitrary place. Nitric acid that can be installed (in places other than the anaerobic tank) and can be used alone as a cartridge-type bioactor, allowing denitrification to proceed at the level of a single device and reducing costs such as the construction of an anaerobic tank An object of the present invention is to provide a method for removing nitrogen from water containing nitrogen and a denitrification bioreactor.
【０００８】[0008]
【課題を解決するための手段】課題を解決するために本
発明は、単体である脱窒バイオリアクターによる硝酸性
窒素含有水中の窒素除去方法であって、硝酸性窒素含有
水と外部から投入される水素供与体とを膜分離し、この
膜から水素供与体を透過させることにより、この膜表面
に脱窒菌を固定化し、膜表面に嫌気環境を提供（空気遮
断膜を形成）し、脱窒菌に効率的に窒素を除去させるこ
とを特徴とするものである。SUMMARY OF THE INVENTION In order to solve the problems, the present invention is a method for removing nitrogen from nitrate-nitrogen-containing water using a single unit, a denitrification bioreactor, which is supplied from outside with nitrate-nitrogen-containing water. The membrane is separated from the hydrogen donor, and the hydrogen donor is permeated through the membrane to immobilize the denitrifying bacteria on the membrane surface, provide an anaerobic environment on the membrane surface (form an air barrier membrane), and To efficiently remove nitrogen.
【０００９】また、脱窒バイオリアクターであって、硝
酸性窒素含有水中で水素供与体を封入した閉区画を形成
可能で、単体で反復使用可能なカートリッジ式の膜体容
器からなるとともに、前記膜体容器が、少なくとも１区
画壁を水素供与体透過膜により形成し、かつ、その膜表
面に溶存酸素の遮断層を積層形成した膜体構造を有して
なり、前記膜体構造により嫌気環境を提供する水素供与
体保有生物膜担体を構成するようにしたことを特徴とす
るものである。The present invention also provides a denitrification bioreactor, comprising a cartridge type membrane container capable of forming a closed compartment enclosing a hydrogen donor in nitrate nitrogen-containing water and being reusable as a single unit. The body container has a membrane structure in which at least one partition wall is formed by a hydrogen donor permeable membrane, and a barrier layer for dissolved oxygen is formed on the membrane surface to form an anaerobic environment by the membrane structure. The present invention is characterized in that the biofilm carrier having a hydrogen donor is provided.
【００１０】[0010]
【発明の実施の形態】本発明の実施形態は、上記構成の
脱窒バイオリアクターにおいて、水素供与体がメタノー
ルであり、水素供与体透過膜がポリエチレン膜であり、
ポリエチレン表面を嫌気環境にするために不織布をラミ
ネート又は被覆し、この膜素材（不織布ラミネートポリ
エチレン）を袋状又はチューブ状に形成した膜体容器に
メタノールを封入し、カートリッジ式の脱窒バイオリア
クターを構成している。BEST MODE FOR CARRYING OUT THE INVENTION The embodiment of the present invention relates to a denitrification bioreactor having the above structure, wherein the hydrogen donor is methanol, the hydrogen donor permeable membrane is a polyethylene membrane,
In order to make the polyethylene surface anaerobic environment, a nonwoven fabric is laminated or coated, and this membrane material (nonwoven fabric laminated polyethylene) is formed into a bag-shaped or tube-shaped membrane container, and methanol is sealed therein. Make up.
【００１１】ここで、上記脱窒バイオリアクターの機能
は、容器内部のメタノールが膜を透過し、表面に達した
時点で脱窒菌に取り込まれて硝酸性窒素を還元し、窒素
ガスとして気散させる。このため、膜表面に脱窒菌が固
定化され、ここでの脱窒反応が活性化される。Here, the function of the above-mentioned denitrification bioreactor is that when the methanol inside the container permeates the membrane and reaches the surface, it is taken in by the denitrifying bacteria to reduce nitrate nitrogen and diffuse as nitrogen gas. . Therefore, the denitrifying bacteria are immobilized on the membrane surface, and the denitrification reaction is activated.
【００１２】また、上記脱窒バイオリアクターは単体構
成であり、膜表面に嫌気環境を作ることができることか
ら、必要箇所で脱窒（反応）を進行させることができ
る。The above-mentioned denitrification bioreactor has a single structure and can create an anaerobic environment on the surface of the membrane, so that the denitrification (reaction) can proceed at necessary places.
【００１３】したがって、既存の浄化槽や排水処理施設
にも簡単に応用することができ、カートリッジ式である
ことから簡単に反復使用ができる。Therefore, it can be easily applied to existing septic tanks and wastewater treatment facilities, and since it is of a cartridge type, it can be easily used repeatedly.
【００１４】[0014]
【実施例】本発明の一実施例を添付図面を参照して以下
説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the accompanying drawings.
【００１５】図１は、本発明方法〔膜分離脱窒〕模式的
に示す説明図である。FIG. 1 is an explanatory view schematically showing the method of the present invention (membrane separation and denitrification).
【００１６】図２は、本発明の脱窒バイオリアクターの
機能を模式的に示す断面視説明図である。FIG. 2 is an explanatory cross-sectional view schematically showing the function of the denitrification bioreactor of the present invention.
【００１７】図３は、本発明の脱窒バイオリアクターの
設置構成概要図である。FIG. 3 is a schematic diagram showing the installation configuration of the denitrification bioreactor of the present invention.
【００１８】図示するように、脱窒バイオリアクター
（Ｘ）はポリエチレン製の膜素材（11）表面に嫌気環境
（空気遮断膜12）を形成するために不織布（121)をラミ
ネートし、袋状またチューブ状に形成した膜体容器
（１）であり、この膜体容器（１）にメタノール（２）
を封入したものである。このメタノール（２）は硝酸性
窒素含有水中に透過して消費される量だけポンプによっ
て補充される。したがって、脱窒バイリアクター（Ｘ）
はカートリッジ化できる。As shown in the figure, the denitrification bioreactor (X) is formed by laminating a nonwoven fabric (121) on the surface of a polyethylene membrane material (11) to form an anaerobic environment (air barrier membrane 12), and forming a bag-like or bioreactor. This is a membrane container (1) formed in a tubular shape, and methanol (2) is added to the membrane container (1).
Is enclosed. This methanol (2) is replenished by the pump in an amount consumed by permeating into the nitrate nitrogen-containing water. Therefore, the denitrification bireactor (X)
Can be made into a cartridge.
【００１９】そして、この脱窒バイオリアクター（Ｘ）
を硝酸性窒素含有水に浸積することにより、硝酸性窒素
含有水とメタノールを膜分離し、膜表面に脱窒菌を高密
度に固定して、膜表面（膜体内）を嫌気環境下に維持す
ることによって、硝酸性窒素含有水の溶存酸素濃度に関
係なく、脱窒反応を活性化させることができる。The denitrification bioreactor (X)
Is immersed in nitrate-nitrogen-containing water to separate the membrane from the nitrate-nitrogen-containing water and methanol, fix the denitrifying bacteria on the membrane surface at high density, and maintain the membrane surface (in the membrane) in an anaerobic environment. By doing so, the denitrification reaction can be activated regardless of the dissolved oxygen concentration of the nitrate nitrogen-containing water.
【００２０】上記構成によると、窒素除去の処理対象と
なる汚水の種類は特に制限されず、例えば各種の工場排
水、事業所排水、生活排水、沼湖、河川、池、海などの
汚水に対して提供することができる。しかも、各種汚水
処理施設において処理を行う槽（脱窒バイオリアクター
を設置する場所）も制限されない。（溶存酸素量にも影
響されない。）また、汚水の内容も特に制限されない。According to the above configuration, the type of sewage to be treated for nitrogen removal is not particularly limited. For example, various types of sewage such as factory drainage, office drainage, domestic drainage, swamp lakes, rivers, ponds, and the sea can be used. Can be provided. In addition, the tanks for performing treatment in various sewage treatment facilities (locations where denitrification bioreactors are installed) are not limited. (It is not affected by the amount of dissolved oxygen.) The content of the sewage is not particularly limited.
【００２１】ここで、実験的事実に基づく本発明の作用
効果について以下に結果のみを述べる。Here, only the results of the effects of the present invention based on experimental facts will be described below.
【００２２】脱窒はほぼ膜表面のみで起こる。Denitrification occurs almost only on the film surface.
【００２３】脱窒速度はメタノールの不織布ポリエチ
レン膜透過速度に依存する。（温度依存性）The rate of denitrification depends on the rate of methanol permeation through the nonwoven polyethylene membrane. (Temperature dependence)
【００２４】処理水の溶存酸素量に関係なく脱窒が起
こっていることから、膜表面は嫌気環境になっている。Since denitrification occurs regardless of the amount of dissolved oxygen in the treated water, the film surface is in an anaerobic environment.
【００２５】[0025]
【発明の効果】本発明は以上の構成よりなるものであ
り、これによれば脱窒バイオリアクター単体で脱窒機能
を発現できるとともに、曝気槽（溶存酸素量の大きい
槽）での脱窒も可能なことから、必要の都度、任意の場
所に設置することで、効果的に窒素除去をはかることが
できる。According to the present invention, the denitrification function can be exhibited by the denitrification bioreactor alone, and the denitrification in the aeration tank (the tank with a large amount of dissolved oxygen) can be achieved. Because it is possible, nitrogen can be effectively removed by installing it at an arbitrary location whenever necessary.
【００２６】したがって、浄化槽や排水処理施設にだけ
ではなく、河川水や地下水、熱帯魚の水槽水、上水、下
水等様々な水に対する浄化システムとして適用範囲が期
待できる。Therefore, the present invention can be expected to be applicable not only to a septic tank and a wastewater treatment facility, but also to a purification system for various waters such as river water, groundwater, aquarium water for tropical fish, tap water, and sewage.
【００２７】また、従来の窒素除去法のように脱窒槽の
建設やそれに伴う用地の確保などの設備投資が不要とな
り、装置の製造コストも廉価であるので、初期コスト、
ランニングコストの低減等多大な経済効果が期待でき
る。しかも、設置後はそのまま放置するだけで良く、維
持管理も省力化できる。Further, unlike the conventional nitrogen removal method, there is no need for capital investment such as construction of a denitrification tank and associated land securing, and the manufacturing cost of the apparatus is low.
A great economic effect such as a reduction in running costs can be expected. Moreover, it is only necessary to leave the apparatus as it is after installation, and the maintenance can be labor-saving.
【図１】本発明方法〔膜分離脱窒〕を模式的に示す説明
図である。FIG. 1 is an explanatory view schematically showing a method of the present invention (membrane separation and denitrification).
【図２】脱窒バイオリアクターの機能を模式的に示す断
面視説明図である。FIG. 2 is an explanatory cross-sectional view schematically showing the function of a denitrification bioreactor.
【図３】脱窒バイオリアクターの設置構成概要図であ
る。FIG. 3 is a schematic diagram illustrating an installation configuration of a denitrification bioreactor.
【図４】従来方法〔混合脱窒〕を模式的に示す説明図で
ある。FIG. 4 is an explanatory view schematically showing a conventional method (mixed denitrification).
１ 膜体容器（膜体構造） 11 ポリエチレン膜（水素供与体透過膜） 12 空気遮断膜（溶存酸素の遮断層） 121 布帛又は不織布 ２ メタノール（水素供与体） Ｘ 脱窒バイオリアクター DESCRIPTION OF SYMBOLS 1 Membrane container (membrane structure) 11 Polyethylene membrane (hydrogen donor permeable membrane) 12 Air barrier membrane (dissolved oxygen barrier layer) 121 Fabric or nonwoven fabric 2 Methanol (hydrogen donor) X Denitrification bioreactor
───────────────────────────────────────────────────── フロントページの続き (72)発明者 岡本 良一 広島県福山市南蔵王町二丁目21番27号 永和調査設計株式会社内 (72)発明者 小紫 雅之 広島県福山市南蔵王町二丁目21番27号 永和調査設計株式会社内 (56)参考文献 特開 平８−290194（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C02F 3/34 101 B01D 69/12 C02F 3/06 C02F 3/10 C02F 3/30 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Ryoichi Okamoto, Inventor Ryoichi Okamoto 2--21-27 Minami-Zao-cho, Fukuyama City, Hiroshima Prefecture Inside (72) Inventor Masayuki Ogura 2-Chome, Minami-Zao-cho, Fukuyama City, Hiroshima Prefecture No. 21-27 Eiwa Research & Design Co., Ltd. (56) References JP-A-8-290194 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) C02F 3/34 101 B01D 69 / 12 C02F 3/06 C02F 3/10 C02F 3/30
Claims (5)
による硝酸性窒素含有水中の窒素除去方法において、水
素供与体透過膜表面に溶存酸素の遮断層を積層形成した
膜体構造により、前記水素供与体透過膜表面に発生する
生物膜を前記膜体内で嫌気環境下に維持し、脱窒反応の
活性化を増補することを特徴とする硝酸性窒素含有水中
の窒素除去方法。1. A method for removing nitrogen from nitrate-nitrogen-containing water using a bioreactor for performing membrane separation and denitrification, wherein the hydrogen donor is formed by laminating a barrier layer for dissolved oxygen on the surface of a hydrogen donor permeable membrane. A method for removing nitrogen from nitrate-nitrogen-containing water, comprising maintaining a biofilm generated on the surface of a permeable membrane in an anaerobic environment in the membrane to enhance activation of a denitrification reaction.
体構造における溶存酸素の遮断層の積層形成が樹脂製の
水素供与体透過膜表面に布帛を被着するものである請求
項１記載の硝酸性窒素含有水中の窒素除去方法。2. The method according to claim 1, wherein the hydrogen donor is an organic carbon compound, and the lamination formation of the dissolved oxygen blocking layer in the membrane structure comprises applying a cloth to the surface of the resin-made hydrogen donor permeable membrane. For removing nitrogen from nitrate-containing water.
脂製の水素供与体透過膜がポリエチレン膜であり、布帛
の被着が不織布をラミネート又は被覆するものである請
求項２記載の硝酸性窒素含有水中の窒素除去方法。3. The nitrate-nitrogen-containing nitrogen-containing composition according to claim 2, wherein the organic carbon compound is methanol, the resin-made hydrogen donor permeable membrane is a polyethylene membrane, and the adherence of the cloth laminates or covers a nonwoven fabric. How to remove nitrogen from water.
なうための脱窒バイオリアクターにおいて、水素供与体
透過膜表面に発生する生物膜を嫌気環境下に維持し、脱
窒反応の活性化を増補するための脱窒バイオリアクター
であって、硝酸性窒素含有水中で水素供与体を封入した
閉区画を形成可能で、単体で反復使用可能なカートリッ
ジ式の膜体容器からなるとともに、前記膜体容器が、少
なくとも１区画壁を水素供与体透過膜により形成し、か
つ、その膜表面に溶存酸素の遮断層を積層形成した膜体
構造を有してなり、前記膜体構造により嫌気環境を提供
する水素供与体保有生物膜担体を構成するようにしたこ
とを特徴とする脱窒バイオリアクター。4. A denitrification bioreactor for performing membrane separation and denitrification in water containing nitrate nitrogen, wherein the biofilm generated on the surface of the hydrogen donor permeable membrane is maintained in an anaerobic environment to activate the denitrification reaction. A denitrification bioreactor for augmenting a membrane comprising a cartridge-type membrane container capable of forming a closed compartment enclosing a hydrogen donor in nitrate-nitrogen-containing water and capable of being repeatedly used alone, and comprising the membrane The body container has a membrane structure in which at least one partition wall is formed by a hydrogen donor permeable membrane, and a barrier layer for dissolved oxygen is formed on the membrane surface to form an anaerobic environment by the membrane structure. A denitrification bioreactor comprising the provided hydrogen donor-containing biofilm carrier.
タノールを封入する膜体容器が、水素供与体透過膜とし
てポリエチレン製の膜素材を用い、その表面に布帛又は
不織布を被着又はラミネートないしは被覆して、袋状又
はチューブ状に形成したものである請求項４記載の脱窒
バイオリアクター。5. The hydrogen donor is methanol, and the membrane container enclosing the methanol uses a polyethylene membrane material as the hydrogen donor permeable membrane, and adheres, laminates or coats a cloth or nonwoven fabric on the surface thereof. The denitrification bioreactor according to claim 4, which is formed into a bag or a tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4471599A JP3025964B1 (en) | 1999-02-23 | 1999-02-23 | Removal method of nitrogen from water containing nitrate nitrogen and denitrification bioreactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4471599A JP3025964B1 (en) | 1999-02-23 | 1999-02-23 | Removal method of nitrogen from water containing nitrate nitrogen and denitrification bioreactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP3025964B1 true JP3025964B1 (en) | 2000-03-27 |
| JP2000237791A JP2000237791A (en) | 2000-09-05 |
Family
ID=12699129
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4471599A Expired - Fee Related JP3025964B1 (en) | 1999-02-23 | 1999-02-23 | Removal method of nitrogen from water containing nitrate nitrogen and denitrification bioreactor |
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| JP (1) | JP3025964B1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3906344B2 (en) * | 2001-05-09 | 2007-04-18 | 和歌山県 | Waste water treatment apparatus and waste water treatment method |
| JP3659591B2 (en) * | 2001-10-12 | 2005-06-15 | 永和国土環境株式会社 | Sewage purification equipment |
| WO2006135028A1 (en) * | 2005-06-15 | 2006-12-21 | Central Research Institute Of Electric Power Industry | Method of feeding microbial activity controlling substance, apparatus therefor, and making use of the same, method of environmental cleanup and bioreactor |
| CN101198555A (en) * | 2005-06-15 | 2008-06-11 | 财团法人电力中央研究所 | Method of feeding microbial activity controlling substance, apparatus therefor, and making use of the same, method of environmental cleanup and bioreactor |
| JP4671432B2 (en) * | 2006-05-02 | 2011-04-20 | 財団法人電力中央研究所 | Method for treating heavy metal-containing liquid |
| JP4747050B2 (en) * | 2006-07-24 | 2011-08-10 | 財団法人電力中央研究所 | Soil purification method |
| JP5165866B2 (en) * | 2006-07-24 | 2013-03-21 | 一般財団法人電力中央研究所 | Method and apparatus for supplying electron donor to microorganism and bioreactor using the same |
| JP4778938B2 (en) * | 2006-07-24 | 2011-09-21 | 財団法人電力中央研究所 | Environmental pollutant treatment method and bioreactor |
| JP2008150234A (en) * | 2006-12-15 | 2008-07-03 | Central Res Inst Of Electric Power Ind | Method and apparatus for supplying oxygen |
| JP4956172B2 (en) * | 2006-12-15 | 2012-06-20 | 一般財団法人電力中央研究所 | Deoxygenation method and apparatus |
| JP5324201B2 (en) | 2008-12-10 | 2013-10-23 | 拓朗 藤田 | Nitric acid removal bioreactor, nitric acid removal biofilm generation method and nitric acid removal method |
| JP5222234B2 (en) * | 2009-06-24 | 2013-06-26 | 一般財団法人電力中央研究所 | Device for supplying electron donor to microorganism and method of using the same |
| JP5456401B2 (en) * | 2009-07-27 | 2014-03-26 | 一般財団法人電力中央研究所 | Wastewater treatment method and system |
| JP5519043B2 (en) * | 2013-02-12 | 2014-06-11 | 一般財団法人電力中央研究所 | Device for supplying electron donor to microorganism and method of using the same |
| JP7335465B1 (en) * | 2023-03-31 | 2023-08-29 | 株式会社イワキ | Electron donor supply and recovery device, electron donor supply method, and electron donor recovery method |
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1999
- 1999-02-23 JP JP4471599A patent/JP3025964B1/en not_active Expired - Fee Related
Also Published As
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|---|---|
| JP2000237791A (en) | 2000-09-05 |
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