JPH11276164A - Microbial carrier - Google Patents
Microbial carrierInfo
- Publication number
- JPH11276164A JPH11276164A JP10101871A JP10187198A JPH11276164A JP H11276164 A JPH11276164 A JP H11276164A JP 10101871 A JP10101871 A JP 10101871A JP 10187198 A JP10187198 A JP 10187198A JP H11276164 A JPH11276164 A JP H11276164A
- Authority
- JP
- Japan
- Prior art keywords
- carrier
- water
- microorganism
- microorganism carrier
- soluble polymer
- 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.)
- Pending
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)
- Biological Treatment Of Waste Water (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、有機物の生分解や
アンモニア態窒素の硝酸化に用いる好気性流動床式生物
処理装置あるいは硝酸態窒素の還元による脱窒反応等に
用いる非流動床式生物処理装置により汚染水を浄化する
に有効なプラスチック製微生物担体に関するものであ
り、微生物を担体内空孔に保持することを特徴とする。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aerobic fluidized bed biological treatment apparatus used for biodegradation of organic substances and nitrification of ammonia nitrogen, or a non-fluidized bed biological apparatus used for denitrification reaction by reduction of nitrate nitrogen. The present invention relates to a plastic microbial carrier effective for purifying contaminated water by a treatment device, characterized in that microorganisms are held in pores in the carrier.
【0002】[0002]
【従来の技術】廃水の処理方式の一つとして微生物担体
を槽内に流動させ、資化した微生物を微生物担体と共に
効率よく処理水と分離する流動床式生物処理方式あるい
は硝酸性・亜硝酸性窒素等の硝酸態窒素を有する廃水を
メタノール等の有機物により、還元による脱窒反応等に
用いる非流動床式生物処理装置が知られ、各種の架橋樹
脂から成る含水ゲル、ポリエチレン、ポリプロピレン、
ポリスチレン、ポリ塩化ビニル、エチレンテレフタレー
ト等のプラスチック製の微生物担体等が知られている。2. Description of the Related Art As a method of treating wastewater, a fluidized bed biological treatment method in which a microorganism carrier is fluidized into a tank and assimilated microorganisms are efficiently separated from treated water together with the microorganism carrier, or a nitric acid / nitrite solution. Non-fluidized-bed biological treatment equipment using wastewater containing nitrate nitrogen such as nitrogen with an organic substance such as methanol for a denitrification reaction by reduction, etc., is known, including hydrogels composed of various cross-linked resins, polyethylene, polypropylene,
Plastic microbial carriers such as polystyrene, polyvinyl chloride, and ethylene terephthalate are known.
【0003】[0003]
【発明が解決しようとする課題】生物学的廃水処理方法
において、微生物担体を利用し廃水を処理するにあた
り、微生物担体と処理水を分離する手段として重力を利
用して比重差により分離する方法やスリット等のセパレ
ーターにより微生物担体と処理水を分離する方法が有
る。 中身の詰まったペレットタイプのプラスチック製
微生物担体あるいは含水ゲルは、例えば包括法により微
生物を固定しても内部は水処理に利用されずに一部表面
のみの利用に終わる欠点が有り、比表面積を大きくした
中空管状のプラスチック製微生物担体が効率的ではある
が、通常のプラスチック製材料の単独使用では微生物の
付着固定性が悪い欠点がある。SUMMARY OF THE INVENTION In a biological wastewater treatment method, in treating wastewater using a microorganism carrier, a method of separating the microorganism carrier and the treated water by a specific gravity difference using gravity as a means for separating the treated water, There is a method of separating a microorganism carrier and treated water by a separator such as a slit. Pellet-type plastic microbial carriers or hydrogels with solid contents have the disadvantage that even if microorganisms are immobilized by the inclusive method, for example, the inside is not used for water treatment but only part of the surface is used, and the specific surface area is large. Although the hollow microbial plastic microbial carrier described above is efficient, the use of ordinary plastic materials alone has the disadvantage of poor microbial adhesion and fixation.
【0004】[0004]
【課題を解決するための手段】本発明者は上記の課題に
鑑み、鋭意検討をおこなった結果、多孔性の中空管ない
しC字状断面の疑似中空管状のプラスチック製基材に、
微生物を包含する水溶性高分子を該空孔内に導入し、し
かる後該水溶性高分子の不溶化処理を行う工程を経て製
造した微生物担体が、微生物固定性、スリット等のセパ
レーターによる微生物担体と処理水の分離性に卓効があ
ることを見いだし本発明を成すに至った。Means for Solving the Problems In view of the above problems, the present inventors have made intensive studies and found that a porous hollow tube or a pseudo-hollow tubular plastic substrate having a C-shaped cross section can be used.
A water-soluble polymer containing microorganisms is introduced into the pores, and then the microbial carrier produced through the step of insolubilizing the water-soluble polymer is a microbial carrier, a microbial carrier with a separator such as a slit. The present inventors have found that the separation of the treated water is excellent, and have accomplished the present invention.
【0005】本発明の請求項1の発明は、疎水性プラス
チックから成る多孔性の中空管ないしC字状断面の疑似
中空管状物質を基材とし、該空孔内に、微生物を含有す
る水溶性高分子を導入したことを特徴とする微生物担
体。[0005] The invention of claim 1 of the present invention is based on a porous hollow tube made of hydrophobic plastic or a pseudo hollow tubular material having a C-shaped cross section as a base material, and contains water containing microorganisms in the pores. A microorganism carrier into which a hydrophilic polymer has been introduced.
【0006】本発明の請求項2の発明は、微生物を含有
する水溶性高分子を導入した後に該水溶性高分子の不溶
化処理を行うことを特徴とする請求項1に記載の微生物
担体である。According to a second aspect of the present invention, there is provided the microorganism carrier according to the first aspect, wherein a water-soluble polymer containing a microorganism is introduced and then the water-soluble polymer is subjected to insolubilization treatment. .
【0007】本発明の請求項3の発明は、疎水性プラス
チック製微生物担体の基材がポリエチレン、ポリプロピ
レン、ポリスチレン、ポリ塩化ビニル、ポリエチレンテ
レフタレート、エポキシ樹脂あるいはこれらの誘導体か
ら成る事を特徴とする請求項1ないし請求項2に記載の
微生物担体である。The invention of claim 3 of the present invention is characterized in that the substrate of the microbial carrier made of a hydrophobic plastic is made of polyethylene, polypropylene, polystyrene, polyvinyl chloride, polyethylene terephthalate, epoxy resin or a derivative thereof. The microorganism carrier according to claim 1 or 2.
【0008】本発明の請求項4の発明は、疎水性プラス
チック製微生物担体の真比重が0.8〜1.5であるこ
とを特徴とする請求項1ないし請求項3に記載の微生物
担体である。According to a fourth aspect of the present invention, there is provided the microorganism carrier according to any one of the first to third aspects, wherein the true specific gravity of the hydrophobic plastic microorganism carrier is 0.8 to 1.5. is there.
【0009】本発明の請求項5の発明は、疎水性プラス
チック製微生物担体の外径と管長のサイズがともに3m
m〜10mmであることを特徴とする請求項1ないし請
求項4に記載の微生物担体である。The invention of claim 5 of the present invention is characterized in that both the outer diameter and the tube length of the hydrophobic plastic microbial carrier are 3 m.
The microorganism carrier according to any one of claims 1 to 4, wherein the carrier is from m to 10 mm.
【0010】本発明の請求項6の発明は、疎水性プラス
チック製微生物担体の外径と管長のサイズの関係が外径
≧管長であることを特徴とする請求項1ないし請求項5
に記載の微生物担体である。The invention according to claim 6 of the present invention is characterized in that the relationship between the outer diameter of the hydrophobic plastic microbial carrier and the size of the tube length is outer diameter ≧ tube length.
The microbial carrier described in 1. above.
【0011】本発明の請求項7の発明は、微生物を含有
する水溶性高分子の種類が、N−ビニルカルボン酸アミ
ド(共)重合体の加水分解物、ポリ酢酸ビニルの加水分
解物、キトサン、アルギン酸ソーダ、ポリアクリル酸ソ
ーダおよびこれらの混合物より選ばれる1種であること
を特徴とする請求項1ないし請求項6に記載の微生物担
体である。The invention according to claim 7 of the present invention is characterized in that the type of the water-soluble polymer containing microorganisms is a hydrolyzate of N-vinylcarboxylic acid amide (co) polymer, a hydrolyzate of polyvinyl acetate, chitosan 7. The microorganism carrier according to claim 1, wherein the microorganism carrier is one selected from the group consisting of sodium alginate, sodium alginate, and a mixture thereof.
【0012】[0012]
【発明の実施の形態】本発明の第一の限定は、疎水性プ
ラスチックから成る多孔性の中空管ないしC字状断面の
疑似中空管状物質を基材とし、該空孔内に、微生物を含
有する水溶性高分子を導入したことを特徴とする微生物
担体である。本発明の第二の限定は、請求項1に記載の
微生物担体において、微生物を含有する水溶性高分子を
導入した後に該水溶性高分子の不溶化処理を行うことを
特徴とする。本発明の第三の限定は、請求項1ないし請
求項2に記載の微生物担体において、疎水性プラスチッ
ク製微生物担体の基材がポリエチレン、ポリプロピレ
ン、ポリスチレン、ポリ塩化ビニル、ポリエチレンテレ
フタレート、エポキシ樹脂あるいはこれらの誘導体から
成る事を特徴とする。本発明の第四の限定は、請求項1
ないし請求項3に記載の微生物担体において、疎水性プ
ラスチック製微生物担体の真比重が0.8〜1.5であ
ることを特徴とする。本発明の第五の限定は、請求項1
ないし請求項4に記載の微生物担体において、疎水性プ
ラスチック製微生物担体の外径と管長のサイズがともに
3mm〜10mmであることを特徴とする。本発明の第
六の限定は、請求項1ないし請求項5に記載の微生物担
体において、疎水性プラスチック製微生物担体の外径と
管長のサイズの関係が外径≧管長であることを特徴とす
る。本発明の第七の限定は、請求項1ないし請求項6に
記載の微生物担体において、微生物を含有する水溶性高
分子の種類が、N−ビニルカルボン酸アミド(共)重合
体の加水分解物、ポリ酢酸ビニルの加水分解物、キトサ
ン、アルギン酸ソーダ、ポリアクリル酸ソーダおよびこ
れらの混合物より選ばれる1種であることを特徴とす
る。BEST MODE FOR CARRYING OUT THE INVENTION A first limitation of the present invention is that a porous hollow tube made of hydrophobic plastic or a pseudo hollow tubular material having a C-shaped cross section is used as a base material, and microorganisms are filled in the pores. A microorganism carrier into which a water-soluble polymer contained is introduced. The second limitation of the present invention is characterized in that the microorganism carrier according to claim 1 is subjected to an insolubilization treatment of the water-soluble polymer after introducing the water-soluble polymer containing the microorganism. A third limitation of the present invention is that in the microorganism carrier according to claim 1 or 2, the substrate of the hydrophobic plastic microorganism carrier is made of polyethylene, polypropylene, polystyrene, polyvinyl chloride, polyethylene terephthalate, epoxy resin or the like. Characterized by comprising a derivative of A fourth limitation of the present invention is claim 1
The microorganism carrier according to claim 3, wherein the true specific gravity of the hydrophobic plastic microorganism carrier is 0.8 to 1.5. A fifth limitation of the present invention is claim 1
The microorganism carrier according to claim 4, wherein the outer diameter and the tube length of the hydrophobic plastic microorganism carrier are both 3 mm to 10 mm. According to a sixth limitation of the present invention, in the microorganism carrier according to any one of claims 1 to 5, the relationship between the outer diameter and the tube length of the hydrophobic plastic microorganism carrier is such that outer diameter ≧ tube length. . A seventh limitation of the present invention is that in the microorganism carrier according to any one of claims 1 to 6, the type of the water-soluble polymer containing the microorganism is a hydrolyzate of an N-vinylcarboxylic acid amide (co) polymer. , A hydrolyzate of polyvinyl acetate, chitosan, sodium alginate, sodium polyacrylate, and a mixture thereof.
【0013】微生物担体の形状保持作用を保証する骨格
的素材を基材と称するが、本発明に言う基材たる疎水性
物質とは一般的なプラスチック材料すなわち非水溶性か
つ非水膨潤性の高分子のことである。例えばポリエチレ
ン、ポリプロピレン、ポリスチレン、ポリ塩化ビニル、
ポリエチレンテレフタレート、エポキシ樹脂等のプラス
チックあるいはこれらの廃プラスチックから成る基材が
本発明の対象となる。これら基材は非水溶性かつ非水膨
潤性であるため水中における耐久性に優れ長期間安定し
て使用することができる。 本発明の想定する廃水処理
方法は微生物の付着した微生物担体を流動状態で廃水と
接触させたのち比重差またはスリット格子等のセパレー
ターにより微生物担体と処理水を分離する。スリット格
子等のセパレーターにより微生物担体と処理水を分離す
る方法は分離速度が大きくとれるため賞用され本発明の
微生物担体は中空管ないしC字状断面の疑似中空管であ
るため高比表面積であるにも係わらず寸法形状がムクの
プラスチックに比較して大きいため分離が本質的に容易
である。該疎水性プラスチック製微生物担体の外径と管
長のサイズがともに3mm〜10mmであることが望ま
しく、微生物による廃水処理能力ならびにスリット格子
等のセパレーターによる分離能力に優れる。 また該疎
水性プラスチック製微生物担体の外径と管長のサイズの
関係は外径≧管長であることが望ましく、耐閉塞性やセ
パレーターによる分離能力に優れる。微生物含有水溶性
高分子の水溶液を導入する多孔性の疎水性プラスチック
製微生物担体の空孔は破裂気泡の形成により生じさせる
が、該破裂気泡の形成は成形前のプラスチックに気泡を
混入させ成形射出すると表面付近の気泡が破裂して成形
されるものであり、気泡を混入させるガスの種類は任意
に選ぶことができる。微生物含有水溶液を形成する水溶
性高分子の種類は、N−ビニルカルボン酸アミド(共)
重合体の加水分解物、ポリ酢酸ビニルの加水分解物、キ
トサン、アルギン酸ソーダ、ポリアクリル酸ソーダおよ
びこれらの混合物より選ばれる1種であることを特徴と
する。 N−ビニルカルボン酸アミドとしてはN−ビニ
ルホルムアミドあるいはN−ビニルアセトアミドが選ば
れ加水分解は塩酸酸性条件にて行う。 ポリ酢酸ビニル
の加水分解物とは所謂ポリビニルアルコールのことであ
る。 キトサンとは蟹や海老の甲羅の加水分解物であ
る。 これら水溶性高分子は1〜10%の濃度で使用さ
れ100cp以下程度の低粘度と成る様に低分子量化し
て用いる。 該水溶液の不溶性化は常法により、アルデ
ヒド等の架橋剤,ホウ酸添加,多価金属塩(Ca++,M
g++)添加等の方法が有る。 水溶液に包含する微生物
は硝酸菌,亜硝酸菌,硝酸還元脱窒菌等の窒素除去処理
装置用微生物を始め通常のBOD処理用微生物を包含し
ても良い。本発明の微生物担体は高比表面積であるた
め、微生物担体単位重量あたりの微生物固定量は大き
く、高比表面積であるため微生物担体の流動性は高く、
流動床式好気性生物処理方式に適し、また非流動床式生
物脱窒処理方式においても閉塞が起こりにくい利点が有
る。上述の如く本発明の微生物担体と処理水の分離は比
重差またはセパレーターにより分離され、比重差で分離
する場合は水と若干比重の異なることが望ましく、疎水
性プラスチック製微生物担体の真比重が0.8〜1.5
であることが生物処理特性ならびに分離の容易さの点で
望ましい。 また硝酸還元による脱窒では窒素気泡が付
着して微生物担体の見かけ比重が小さくなるために比重
が1以上である方が耐閉塞性でも優れる。セパレーター
で微生物担体と処理水の分離を行う場合は分離時の比重
差は無関係であり、気泡付着を気にしなくても良い場合
は微生物担体の比重は1に近いことが流動に要するエネ
ルギーが小さくてすむ。The skeletal material which guarantees the shape-retaining action of the microorganism carrier is referred to as a substrate. The term "hydrophobic substance" as used in the present invention refers to a general plastic material, that is, a water-insoluble and non-water-swellable material. It is a molecule. For example, polyethylene, polypropylene, polystyrene, polyvinyl chloride,
A substrate made of a plastic such as polyethylene terephthalate or epoxy resin or a waste plastic thereof is an object of the present invention. Since these substrates are water-insoluble and non-water-swellable, they have excellent durability in water and can be used stably for a long period of time. According to the wastewater treatment method envisioned by the present invention, the microorganism carrier to which microorganisms adhere is brought into contact with wastewater in a fluidized state, and then the microorganism carrier and treated water are separated by a separator such as a specific gravity difference or a slit lattice. The method of separating the microorganism carrier and the treated water by a separator such as a slit lattice is awarded because the separation speed can be increased, and the microorganism carrier of the present invention is a hollow tube or a pseudo hollow tube having a C-shaped cross section, so that a high specific surface area is obtained. Nevertheless, the separation is inherently easy because the dimensions and shape are large compared to the plastic of Muku. It is desirable that both the outer diameter and the tube length of the microbial carrier made of a hydrophobic plastic are 3 mm to 10 mm, and it is excellent in wastewater treatment ability by microorganisms and separation ability by a separator such as a slit lattice. Further, the relationship between the outer diameter of the hydrophobic plastic microbial carrier and the size of the tube length is preferably such that the outer diameter is equal to or greater than the tube length, and is excellent in clogging resistance and separation ability by a separator. The pores of the porous hydrophobic plastic microbial carrier into which the aqueous solution of the microorganism-containing water-soluble polymer is introduced are generated by the formation of ruptured air bubbles. The formation of the ruptured air bubbles is caused by mixing air bubbles into the plastic before molding and injection molding. Then, bubbles near the surface are ruptured and formed, and the type of gas into which the bubbles are mixed can be arbitrarily selected. The type of water-soluble polymer that forms the aqueous solution containing microorganisms is N-vinylcarboxylic acid amide (co)
It is characterized by being one selected from a hydrolyzate of a polymer, a hydrolyzate of polyvinyl acetate, chitosan, sodium alginate, sodium polyacrylate and a mixture thereof. N-vinylformamide or N-vinylacetamide is selected as N-vinylcarboxylic acid amide, and the hydrolysis is performed under hydrochloric acid conditions. The hydrolyzate of polyvinyl acetate is so-called polyvinyl alcohol. Chitosan is a hydrolyzate of crab and shrimp shells. These water-soluble polymers are used at a concentration of 1 to 10% and are used after being reduced in molecular weight so as to have a low viscosity of about 100 cp or less. The aqueous solution can be insolubilized by a conventional method using a crosslinking agent such as an aldehyde, boric acid, a polyvalent metal salt (Ca ++ , M
g ++ ) There is a method such as addition. The microorganisms contained in the aqueous solution may include ordinary microorganisms for BOD treatment, such as microorganisms for nitrogen removal treatment equipment such as nitrate bacteria, nitrite bacteria, nitrate reduction and denitrification bacteria. Because the microorganism carrier of the present invention has a high specific surface area, the fixed amount of microorganisms per unit weight of the microorganism carrier is large, and the fluidity of the microorganism carrier is high due to the high specific surface area,
It is suitable for a fluidized-bed aerobic biological treatment system, and has the advantage of being less likely to be clogged in a non-fluidized-bed biological denitrification treatment system. As described above, the microorganism carrier of the present invention is separated from the treated water by a specific gravity difference or a separator. When the separation is performed by a specific gravity difference, it is desirable that the specific gravity is slightly different from that of water. 0.8 to 1.5
Is desirable in terms of biological treatment properties and ease of separation. In the case of denitrification by nitrate reduction, nitrogen bubbles adhere and the apparent specific gravity of the microbial carrier is reduced, so that a specific gravity of 1 or more is superior in blocking resistance. When the separator separates the microbial carrier and the treated water, the specific gravity difference at the time of separation is irrelevant, and when it is not necessary to worry about bubble adhesion, the specific gravity of the microbial carrier is close to 1 and the energy required for flow is small. Help me.
【0014】[0014]
【実施例】以下、本発明を実施例により説明するが、本
発明は実施例の範囲に限定されるものではない。 〔担体〕疎水性プラスチックから成る物質を基材とする
多孔性の中空管状の微生物担体として、破裂気泡により
多孔性としたポリプロピレン製中空管状の微生物担体
(外径4mm内径3mm管長3mmの円筒状,真比重は
1.14)を微生物含有高分子水溶液の充填前の微生物
担体として試験に供した。 これを担体−0とする。
し尿処理場の脱窒汚泥を採取しSS1重量%に調整した
懸濁液に、N−ビニルホルムアミド・アクリロニトリル
共重合物の塩酸加水分解物であるハイモロックSC−7
00をポリマー濃度5重量%に溶解しグルタールアルデ
ヒド500ppmを混合した微生物含有高分子水溶液
を、担体−0に接触させた状態で真空にして脱泡した
後、大気圧に戻して該液を空孔に充填した。 この微生
物担体を担体−1とする。 し尿処理場の脱窒汚泥を採
取しSS1重量%に調整した懸濁液に、キトサン塩酸塩
をポリマー濃度5重量%に溶解しグルタールアルデヒド
500ppmを混合した微生物含有高分子水溶液を、担
体−0に接触させた状態で真空にして脱泡した後、大気
圧に戻して該液を空孔に充填した。 この微生物担体を
担体−2とする。EXAMPLES The present invention will be described below with reference to examples, but the present invention is not limited to the scope of the examples. [Carrier] As a porous hollow tubular microbial carrier based on a substance made of a hydrophobic plastic, a polypropylene hollow tubular microbial carrier made porous by bursting bubbles (a cylindrical tube having an outer diameter of 4 mm, an inner diameter of 3 mm, and a tube length of 3 mm, The true specific gravity of 1.14) was subjected to a test as a microorganism carrier before filling with a microorganism-containing polymer aqueous solution. This is designated as carrier-0.
Hymoloc SC-7, which is a hydrolyzed hydrochloric acid of N-vinylformamide / acrylonitrile copolymer, was added to a suspension obtained by collecting denitrification sludge from a night soil treatment plant and adjusting it to 1% by weight of SS.
00 was dissolved in a polymer concentration of 5% by weight and mixed with 500 ppm of glutaraldehyde. A microbial-containing aqueous polymer solution was vacuumed and defoamed in contact with the carrier-0, and then returned to atmospheric pressure to empty the solution. The holes were filled. This microorganism carrier is referred to as carrier-1. The denitrification sludge from the night soil treatment plant was collected and adjusted to a SS of 1% by weight, and a microorganism-containing polymer aqueous solution obtained by dissolving chitosan hydrochloride at a polymer concentration of 5% by weight and mixing with glutaraldehyde at 500 ppm was added to a carrier-0. After defoaming by applying a vacuum in the state of contacting with, the pressure was returned to atmospheric pressure, and the liquid was filled in the pores. This microorganism carrier is referred to as carrier-2.
【0015】〔装置〕直径2.4m、高さ3.8mの直
立円筒状タンクの中心に回転軸を持ち、該回転軸には底
部近傍から高さ3.5mの位置までを9等分した各位置
に、螺旋階段状に円周を一周する様に装置壁近傍まで達
する長さの65Aのステンレスパイプを配置し、1.5
Kwのモーターにて5rpmで回転させた。該装置は底
部に廃水流入口を有し上部に処理水流出口として高さ4
0cmのスリット幅2mmのエッジスクリーンを有し、
逆洗用として装置底部全面にガス吹き込み口を有する。
本装置の次工程としてハニカムコアを充填した接触酸
化槽を浮遊微生物・BODおよび燐除去を目的として設
置した。[Apparatus] A rotating shaft is provided at the center of an upright cylindrical tank having a diameter of 2.4 m and a height of 3.8 m. The rotating shaft is divided into nine equal parts from the vicinity of the bottom to a position of 3.5 m in height. At each position, a 65A stainless steel pipe having a length reaching the vicinity of the device wall is arranged so as to make a round of the circumference in a spiral step shape, and
It was rotated at 5 rpm by a Kw motor. The device has a wastewater inlet at the bottom and a treated water outlet at the top with a height of 4.
It has an edge screen of 0 cm slit width 2 mm,
A gas inlet is provided on the entire bottom of the device for backwashing.
As the next step of this apparatus, a contact oxidation tank filled with a honeycomb core was installed for the purpose of removing suspended microorganisms, BOD and phosphorus.
【0016】〔試験−1〕上記装置を廃水処理試験に供
するにあたり、微生物担体として上記担体−0,担体−
1,担体−2を装置内容積の70v/v%量充填し試験
に供した。上記装置にステンレスの焼き入れ工程廃水
(硝酸態窒素600mg/l,燐2mg/l,PH7.
0)に硝酸態窒素(亜硝酸塩):メタノール=1:2.
4の割合で添加した原水を硝酸態窒素負荷2Kg/
m3 .日で供給した。 処理水質の硝酸態窒素濃度は担
体−0使用時に580ppm,担体−1および担体−2
使用時に5ppm以下であった。 1年間経過後も担体
の損耗は無く、効率良く廃水処理を続行する事が出来、
担体の耐久性は高い。[Test-1] When subjecting the above apparatus to a wastewater treatment test, the carrier-0, carrier-
1, Carrier-2 was filled in an amount of 70 v / v% of the internal volume of the device and subjected to the test. A stainless steel quenching process wastewater (600 mg / l nitrate nitrogen, 2 mg / l phosphorus, PH7.
0) to nitrate nitrogen (nitrite): methanol = 1: 2.
The raw water added at a ratio of 4 was subjected to nitrate nitrogen loading of 2 kg /
m 3 . Supplied in days. The nitrate nitrogen concentration of the treated water was 580 ppm when Carrier-0 was used, Carrier-1 and Carrier-2.
It was 5 ppm or less when used. After one year, there is no wear of the carrier, and the wastewater treatment can be continued efficiently,
The durability of the carrier is high.
【0017】[0017]
【発明の効果】微生物を空孔に充填した本発明の微生物
担体は、稼働初期の段階から速やかな処理立ち上がりを
与え、それを利用した廃水処理方法を効率よく維持し、
その費用も安価であることから経済的効果が大きい。The microorganism carrier of the present invention in which the pores are filled with microorganisms gives a rapid treatment start-up from the initial stage of operation, and efficiently maintains a wastewater treatment method using the same.
The cost is low and the economic effect is great.
Claims (7)
空管ないしC字状断面の疑似中空管状物質を基材とし、
該空孔内に、微生物を含有する水溶性高分子を導入した
ことを特徴とする微生物担体。1. A porous hollow tube made of hydrophobic plastic or a pseudo hollow tubular material having a C-shaped cross section as a base material,
A microorganism carrier, wherein a water-soluble polymer containing a microorganism is introduced into the pores.
た後に該水溶性高分子の不溶化処理を行うことを特徴と
する請求項1に記載の微生物担体。2. The microorganism carrier according to claim 1, wherein a water-soluble polymer containing a microorganism is introduced, and then the water-soluble polymer is insolubilized.
がポリエチレン、ポリプロピレン、ポリスチレン、ポリ
塩化ビニル、ポリエチレンテレフタレート、エポキシ樹
脂あるいはこれらの誘導体から成る事を特徴とする請求
項1ないし請求項2に記載の微生物担体。3. The method according to claim 1, wherein the substrate of the microbial carrier made of a hydrophobic plastic is made of polyethylene, polypropylene, polystyrene, polyvinyl chloride, polyethylene terephthalate, epoxy resin or a derivative thereof. Microbial carrier.
重が0.8〜1.5であることを特徴とする請求項1な
いし請求項3に記載の微生物担体。4. The microorganism carrier according to claim 1, wherein the true specific gravity of the hydrophobic plastic microorganism carrier is 0.8 to 1.5.
と管長のサイズがともに3mm〜10mmであることを
特徴とする請求項1ないし請求項4に記載の微生物担
体。5. The microorganism carrier according to claim 1, wherein both the outer diameter and the tube length of the hydrophobic plastic microorganism carrier are 3 mm to 10 mm.
と管長のサイズの関係が外径≧管長であることを特徴と
する請求項1ないし請求項5に記載の微生物担体。6. The microorganism carrier according to claim 1, wherein the relationship between the outer diameter and the tube length of the hydrophobic plastic microorganism carrier is such that outer diameter ≧ tube length.
が、N−ビニルカルボン酸アミド(共)重合体の加水分
解物、ポリ酢酸ビニルの加水分解物、キトサン、アルギ
ン酸ソーダ、ポリアクリル酸ソーダおよびこれらの混合
物より選ばれる1種であることを特徴とする請求項1な
いし請求項6に記載の微生物担体。7. The water-soluble polymer containing microorganisms may be selected from the group consisting of a hydrolyzate of an N-vinylcarboxylic acid amide (co) polymer, a hydrolyzate of polyvinyl acetate, chitosan, sodium alginate, and sodium polyacrylate. The microorganism carrier according to claim 1, wherein the microorganism carrier is one selected from the group consisting of: and a mixture thereof.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10101871A JPH11276164A (en) | 1998-03-31 | 1998-03-31 | Microbial carrier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10101871A JPH11276164A (en) | 1998-03-31 | 1998-03-31 | Microbial carrier |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH11276164A true JPH11276164A (en) | 1999-10-12 |
Family
ID=14312054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10101871A Pending JPH11276164A (en) | 1998-03-31 | 1998-03-31 | Microbial carrier |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH11276164A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006263489A (en) * | 2005-03-22 | 2006-10-05 | Inoac Corp | Microorganism carrier for water treatment |
CN100455524C (en) * | 2006-07-20 | 2009-01-28 | 大连宇都环境工程技术有限公司 | Modified microbial membrane carrier |
CN104891642A (en) * | 2015-05-15 | 2015-09-09 | 大连宇都环境技术材料有限公司 | Nutritional type bio-carrier for wastewater treatment |
CN104909465A (en) * | 2015-05-15 | 2015-09-16 | 大连宇都环境技术材料有限公司 | Modified biological carrier used for waste water processing |
CN109022410A (en) * | 2018-05-20 | 2018-12-18 | 安信达环保科技(宁波)有限公司 | A kind of efficient COD degradation bacterium sustained release agent, and its preparation method and application |
-
1998
- 1998-03-31 JP JP10101871A patent/JPH11276164A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006263489A (en) * | 2005-03-22 | 2006-10-05 | Inoac Corp | Microorganism carrier for water treatment |
JP4722518B2 (en) * | 2005-03-22 | 2011-07-13 | 株式会社イノアックコーポレーション | Microbial carrier for water treatment and production method thereof |
CN100455524C (en) * | 2006-07-20 | 2009-01-28 | 大连宇都环境工程技术有限公司 | Modified microbial membrane carrier |
CN104891642A (en) * | 2015-05-15 | 2015-09-09 | 大连宇都环境技术材料有限公司 | Nutritional type bio-carrier for wastewater treatment |
CN104909465A (en) * | 2015-05-15 | 2015-09-16 | 大连宇都环境技术材料有限公司 | Modified biological carrier used for waste water processing |
CN109022410A (en) * | 2018-05-20 | 2018-12-18 | 安信达环保科技(宁波)有限公司 | A kind of efficient COD degradation bacterium sustained release agent, and its preparation method and application |
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