JP4310381B2 - Wastewater treatment contact material - Google Patents

Wastewater treatment contact material Download PDF

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Publication number
JP4310381B2
JP4310381B2 JP2002287618A JP2002287618A JP4310381B2 JP 4310381 B2 JP4310381 B2 JP 4310381B2 JP 2002287618 A JP2002287618 A JP 2002287618A JP 2002287618 A JP2002287618 A JP 2002287618A JP 4310381 B2 JP4310381 B2 JP 4310381B2
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Prior art keywords
dish
shaft member
contact material
fitting
fitted
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JP2004121941A (en
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幹雄 小嶋
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株式会社ビッグ・エコ
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

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  • Biological Treatment Of Waste Water (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Description

【0001】
【発明の属する技術分野】
この発明は、排水中に設置され、有機物などの汚染物質を分解する活性汚泥を保持するための接触材に関するものである。
【0002】
【従来の技術】
有機物を含有する排水の処理方法として、微生物によって有機物などの汚染物質を分解する方法が多用されていることは周知のとおりである。さらに、その活性汚泥として好気性微生物を使用する酸化処理と、嫌気性微生物を使用する消化処理とが知られている。
【0003】
前者の酸化処理は、空気との接触を促進する必要があるので、排水中に空気を送り込む曝気槽を使用したり、活性汚泥を付着させた充填材に対して排水を散布もしくは流動させる充填槽を使用するなどの方法が採用されている。これに対して後者の消化処理では、酸素を遮断した状態で有機物の消化を促進する必要があるので、一般には、嫌気性の汚泥を付着・保持させた接触材を処理槽の内部に多数配置し、その処理槽の底部から排水を供給して徐々に水位を上昇させ、その間に接触材に保持されている汚泥に排水中の有機物を捕捉・分解させるようにしている。
【0004】
この嫌気性消化処理を好気性酸化処理と併用した処理装置の一例が、特開2001−340891号公報(特許文献1)や特開2001−340892号公報(特許文献2)に記載されており、また消化処理に使用する接触材の例がこれらの文献に記載されている。すなわち、これらの文献に記載された接触材(接触ろ材)は、中心部に貫通孔の形成された円形の平板部分の周縁に、上向きに拡がったテーパ状の周壁部を一体に形成し、かつその平板部分から周壁部に到る長さの六本のスリットを放射状に形成したプラスチック製の皿であって、処理槽の内部に一定間隔で立設されたパイプに、その皿とスペーサとを交互に嵌め込んで処理槽の深さ方向に一定間隔を空けて配置するように構成されている。また、隣接するパイプに保持されている皿同士が、深さ方向に相互に重なり合うように配置されている。これは、接触材に保持されている汚泥と排水との接触を促進するためである。
【0005】
【特許文献1】
特開2001−340891号公報 (段落『0022』ないし段落『0030』、図2、図3)
【特許文献2】
特開2001−340892号公報 (段落『0029』ないし段落『0036』、図2、図3)
【0006】
【発明が解決しようとする課題】
ところで、上記の嫌気性消化処理などに使用する接触材は、汚泥を可及的に多量に保持できること、処理槽に多量に配置する必要があるので軽量かつ安価であること、耐食性に優れていること、施工性が良好であることなどの特性を備えていることが望ましい。上記の文献に記載された接触材は、比較的単純な形状であってプラスチックによって形成されたものであるから、容易に製造でき、また汚泥の付着・保持量を多くでき、また安価であるなどの利点がある。
【0007】
しかしながら、その接触材を処理槽内に配置するには、先ず、多数本のパイプを一定間隔に立設する必要があり、またそのパイプに前記皿とスペーサとを交互に嵌め込む必要がある。しかもそのパイプが処理槽の深さ程度の長いものであるから、一つの処理槽に数百個から数千個の皿およびスペーサを配置することを考慮すると、その組み付け作業に多大の労力を要することになり、施工性の点で改良すべき余地があった。
【0008】
この発明は上記の技術的課題に着目してなされたものであり、嫌気性消化処理などの排水処理に使用される接触材であって、施工性に優れた接触材を提供することを目的とするものである。
【0009】
【課題を解決するための手段およびその作用】
上記の目的を達成するために、請求項1の発明は、活性汚泥を付着させて保持させる皿状部を備え、その皿状部が処理槽の内部に上下方向に間隔をあけて多数配列される排水処理用接触材において、前記皿状部の中心部の表裏両面側に嵌合用突出部が形成され、前記上下方向に間隔をあけて配列される複数の皿状部のうち下側の皿状部における表面側の嵌合用突出部に支持材およびスペーサとしての軸部材の下端部が嵌合させられて固定されるとともに、その軸部材の上端部が上側の皿状部における裏面側の嵌合用突出部に嵌合させられて固定されることにより、前記複数の皿状部が上下方向に連結されて一体化され、さらに最下端の皿状部における裏面側の嵌合用突出部に嵌合させられて固定された軸部材が前記処理槽の内部に配置された下側の枠部材に立設されるとともに最上端部の軸部材が前記処理槽の内部に配置された上側の枠部材に固定されることにより、前記複数の皿状部が上下方向に直線状に配列された状態で前記上下の枠部材の間に支持されることを特徴とするものである。
【0010】
したがって請求項1の発明では、複数の皿状部が、その表裏両面側の嵌合突出部に嵌合させた軸部材によって上下方向に連結され、かつ相互の間隔が軸部材の長さ程度に設定される。その結果、処理槽の内部にその深さ方向に一定間隔に配列した状態に皿状部が支持される。すなわち、軸部材と皿状部とを交互に連結するだけで、皿状部を一定間隔に配列し、かつ支持することができ、その施工性が良好になる。
【0011】
また、請求項2の発明は、請求項1における前記嵌合突出部とこの嵌合突出部に嵌合する前記軸部材とに、軸線方向に対して係合してこれら嵌合突出部と軸部材とを抜け止めする係合部がそれぞれ形成されていることを特徴とする排水処理用接触材である。
【0012】
したがって請求項2の発明では、上記の請求項1の発明と同様の作用を生じ、これに加えて、皿状部と軸部材とが、それぞれに形成された係合部によって強固かつ確実に連結されるので、皿状部の連結・支持状態を確実なものとすることができる。
【0013】
【発明の実施の形態】
つぎにこの発明を具体例を参照して説明する。この発明に係る接触材1は、一例として有機排水の嫌気性消化処理に使用され、その形状の一例を図1に示してある。ここに示す接触材1は、皿状部2とこの表裏両面側(上下両面側)に連結される軸部材3とを備えている。
【0014】
これら皿状部2と軸部材3とは共にプラスチック製であって、その皿状部2は、円形の平板部4の周縁部に、上方向にテーパ状に拡がった形状の周壁部5を一体に形成した形状をなしている。これら平板部4および周壁部5の表面は、汚泥の付着・保持を良好にするために、面粗さを粗くすることが好ましい。
【0015】
また、その平板部4の中心部には、この発明の嵌合突出部に相当する連結用のボス部6が、表裏両面側に突出して形成されている。このボス部6は、軸部材3を嵌合させるためのものであって、必要な強度を維持できる範囲で比較的短い円筒状に形成されている。そのボス部6の基端部外周面には、軸部材3の抜け止めとして機能するこの発明の係合部に相当する環状の凸部7が形成されている。
【0016】
さらに、前記平板部4の表裏両面には、ボス部6と同心円状に第2のボス部8が形成されている。この第2のボス部8は、皿状部2と軸部材3との連結強度を確保するためのものであって、ボス部6の基端部の外周を取り囲むように環状に形成されている。そのボス部6の外周面と第2ボス部8の内周面との間隔は、軸部材3の先端部の肉厚程度、もしくは軸部材3の円筒状の先端部が密着嵌合する程度の寸法に設定されている。したがって第2ボス部8の軸長(高さ)は、数mm程度に短くなっている。
【0017】
一方、軸部材3は、皿状部2を連結して支持する支持材としての機能と皿状部2の間隔を一定間隔に保持するスペーサとしての機能を併せ持ったものであって、少なくとも両端部が前記ボス部6に密着して嵌合する中空軸状に形成されている。その中空軸状の部分の内面には、前記ボス部6における凸部7と係合して抜け止めとして機能する環状の凹部9が形成されている。したがって軸部材3の端部からその凹部9までの寸法は、前記平板部4の面から前記凸部7までの寸法と一致している。
【0018】
なお、前記皿状部2における平板部4から周壁部5に掛かる部分に、表裏両面に貫通した複数本(例えば6本)のスリット10が、平板部4の中心部を中心として放射状に形成されている。このスリット10は、皿状部2を排水中から引き上げたり、排水中に沈めたりする際に排水を流通させて抵抗を低減させるためのものである。
【0019】
上記の皿状部2は排水処理槽中に、互いに接触することなく、上下方向および水平方向に重なり合った状態に配列される。その配列状態の一例を図2に示してあり、先ず下側の枠部材11に軸部材3が立設させられる。なお、隣接する軸部材3としては、互いに長さの異なるものが用いられる。これは、隣接する皿状部2を深さ方向にずらすためである。
【0020】
その最下部の軸部材3の上端部に、皿状部2のボス部6を嵌め込んで取り付ける。その場合、ボス部6が軸部材3の上端部に密着して嵌合すると同時に、その凸部7が軸部材3の凹部9に係合するので、両者が抜け止めされた状態で強固に連結される。また、軸部材3の先端部が、ボス部6と第2ボス部8との間に挟み込まれた状態になるので、この点でも皿状部2と軸部材3とが確実かつ強固に連結される。
【0021】
このようにして取り付けられた最下部の皿状部2における上側のボス部6に、第2段目の軸部材3を嵌合させて取り付ける。その場合も、軸部材3の下端部が、ボス部6に密着して嵌合するとともに、軸部材3の下端部がボス部6と第2ボス部8その間に挟み込まれた状態となり、さらにはボス部6の外周面における凸部7に軸部材3の内周面の凹部9が係合するので、軸部材3と皿状部2とが確実かつ強固に連結される。
【0022】
このようにして皿状部2と軸部材3とを順に積み上げるように連結することにより、複数の皿状部2が所定の間隔を空けて上下方向に連結され、かつ配列される。そして、最上端部の軸部材3を上側の枠部材12に固定することにより、上下の枠部材11,12の間に、複数の皿状部2が直線状に、かつ複数列に並んで保持されるとともに、各皿状部2が上下方向および水平方向に互いに重なった状態に配列される。
【0023】
したがって上記の接触材1では、皿状部2と軸部材3とを交互に積み上げるように嵌め込んで連結することにより、多数の皿状部2を一定間隔に連結して配列し、かつその配列状態に支持することができる。また、その軸部材3の長さを適宜に設定することにより、皿状部2同士の間隔を適宜に設定することができる。そのため、互いに嵌合する部分の長さが短く、また全体としての部品数が少ないなどのことにより、接触材1を容易に所定の構造体として組み上げることができ、その施工性が良好である。
【0024】
こうして上下の枠部材11,12の間に保持された多数の接触材1が、その枠部材11,12と共に所定の処理槽(図示せず)の内部に設置され、その処理槽に注入された排水中で繁殖した汚泥が接触材1に付着・堆積する。また、処理槽に新たに供給された排水中の有機物が、接触材1に保持されている汚泥によって分解され、排水が浄化される。
【0025】
なお、この発明は上記の具体例に限定されない。すなわち、皿状部2は、要は、水平方向に広がりのある部分を有していればよいので、その形状は円形である必要はなく、矩形などの適宜形状であってよく、また平板部は凹状もしくは凸状に湾曲し、かつ突周壁部はテーパ状以外に、垂直に立ち上がった形状であってもよい。また、この発明における係合部は、要は、皿状部と軸部材との抜け止めとして機能する構造であればよいので、前述した凸部と凹部との一方を皿状部に設け、他方を軸部材に設けた構成であってもよく、あるいは相互に係合する凸部を皿状部と軸部材とのそれぞれに形成した構成であってもよい。さらに、上記の具体例では、軸部材の内部にボス部を嵌め込む構造としたが、これとは反対に、軸部材をボス部の内部に嵌合させるように構成してもよい。したがって軸部材は中空軸である必要はなく、中実軸であってもよい。
【0026】
【発明の効果】
以上説明したように請求項1の発明によれば、複数の皿状部が、その表裏両面側の嵌合突出部に嵌合させた軸部材によって上下方向に連結され、かつ相互の間隔が軸部材の長さ程度に設定され、その結果、処理槽の内部にその深さ方向に一定間隔に配列した状態に皿状部を支持することができる。すなわち、軸部材と皿状部とを交互に連結するだけで、皿状部を一定間隔に配列し、かつ支持することができ、その施工性を良好なものにすることができる。
【0027】
また、請求項2の発明によれば、上記の請求項1の発明と同様の効果に加えて、皿状部と軸部材とが、それぞれに形成された係合部によって強固かつ確実に連結されるので、皿状部の連結・支持状態を確実なものとすることができる。
【図面の簡単な説明】
【図1】 この発明の一例を分解しかつ一部を断面で示す図である。
【図2】 その接触材を上下の枠部材の間に配列した状態を示す部分図である。
【符号の説明】
1…接触材、 2…皿状部、 3…軸部材、 4…平板部、 5…周壁部、 6…ボス部、 7…凸部、 9…凹部。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a contact material that is installed in waste water and holds activated sludge that decomposes pollutants such as organic matter.
[0002]
[Prior art]
As is well known, a method for decomposing pollutants such as organic substances by microorganisms is widely used as a method for treating wastewater containing organic substances. Furthermore, an oxidation treatment using an aerobic microorganism as the activated sludge and a digestion treatment using an anaerobic microorganism are known.
[0003]
The former oxidation treatment needs to promote contact with air, so use an aeration tank that sends air into the wastewater, or a filling tank that sprays or flows the wastewater on the filler with activated sludge attached. The method of using is adopted. On the other hand, in the latter digestion treatment, it is necessary to promote the digestion of organic substances in a state where oxygen is shut off, so in general, a large number of contact materials with anaerobic sludge attached and retained are arranged inside the treatment tank. Then, the waste water is supplied from the bottom of the treatment tank to gradually raise the water level, and during that time the organic matter in the waste water is captured and decomposed by the sludge held by the contact material.
[0004]
An example of a processing apparatus using this anaerobic digestion treatment in combination with an aerobic oxidation treatment is described in Japanese Patent Application Laid-Open No. 2001-340891 (Patent Document 1) and Japanese Patent Application Laid-Open No. 2001-340892 (Patent Document 2). Moreover, the example of the contact material used for a digestion process is described in these literatures. That is, the contact material (contact filter medium) described in these documents integrally forms a tapered peripheral wall portion extending upward on the periphery of a circular flat plate portion in which a through hole is formed in the center portion, and A plastic dish in which six slits with a length from the flat plate part to the peripheral wall part are radially formed, and the dish and the spacer are attached to a pipe standing at regular intervals inside the processing tank. It is configured so as to be alternately fitted and arranged at a certain interval in the depth direction of the treatment tank. Further, the plates held by the adjacent pipes are arranged so as to overlap each other in the depth direction. This is to promote the contact between the sludge retained by the contact material and the drainage.
[0005]
[Patent Document 1]
JP 2001-340891 A (paragraphs “0022” to “0030”, FIGS. 2 and 3)
[Patent Document 2]
JP 2001-340892 A (paragraphs “0029” to “0036”, FIG. 2 and FIG. 3)
[0006]
[Problems to be solved by the invention]
By the way, the contact material used for the above-mentioned anaerobic digestion treatment can hold as much sludge as possible, needs to be arranged in a large amount in the treatment tank, is lightweight and inexpensive, and has excellent corrosion resistance. It is desirable to have characteristics such as good workability. The contact material described in the above-mentioned literature is a relatively simple shape and is made of plastic, so it can be easily manufactured, can increase the amount of sludge attached and retained, and is inexpensive. There are advantages.
[0007]
However, in order to arrange the contact material in the treatment tank, first, it is necessary to stand a large number of pipes at regular intervals, and it is necessary to alternately fit the dishes and spacers into the pipes. Moreover, since the pipe is long enough to reach the depth of the processing tank, it takes a lot of labor to assemble it, considering the arrangement of hundreds to thousands of dishes and spacers in one processing tank. Therefore, there was room for improvement in terms of workability.
[0008]
This invention was made paying attention to said technical subject, and is a contact material used for wastewater treatments, such as anaerobic digestion processing, and it aims at providing a contact material excellent in workability. To do.
[0009]
[Means for Solving the Problem and Action]
In order to achieve the above object, the invention of claim 1 is provided with a dish-shaped part for attaching and holding activated sludge, and a large number of the dish-shaped parts are arranged at intervals in the vertical direction inside the treatment tank. In the wastewater treatment contact material, the lower plate among the plurality of dish-shaped portions formed with protrusions for fitting on the front and back both sides of the center portion of the dish-shaped portion and arranged in the vertical direction The lower end portion of the shaft member as the support material and spacer is fitted and fixed to the front-side fitting protrusion on the shape portion, and the upper end portion of the shaft member is fitted on the back side of the upper dish-shaped portion. The plurality of dish-shaped parts are connected and integrated in the vertical direction by being fitted and fixed to the fitting protrusion, and further fitted to the fitting protrusion on the back side of the bottom-most dish-shaped part. allowed is the shaft member fixed to is arranged in the interior of the processing bath By the arc shaft member erected on the frame member side Rutotomoni uppermost end is fixed to the upper frame member disposed in the interior of the processing bath, said plurality of disc-shaped portion is straight in the vertical direction is characterized in that which is supported between the upper and lower frame members in an array has been state to.
[0010]
Therefore, in the invention of claim 1, the plurality of dish-like portions are connected in the vertical direction by the shaft members fitted to the fitting protrusions on both the front and back surfaces, and the mutual distance is about the length of the shaft members. Is set. As a result, the dish-like portions are supported in a state where they are arranged at regular intervals in the depth direction inside the processing tank. That is, by simply connecting the shaft member and the dish-shaped part alternately, the dish-shaped part can be arranged and supported at regular intervals, and the workability is improved.
[0011]
According to a second aspect of the present invention, the fitting protrusion and the shaft member fitted to the fitting protrusion in claim 1 are engaged with each other in the axial direction, and the fitting protrusion and the shaft are engaged. The contact member for wastewater treatment is characterized in that an engaging portion for preventing the member from coming off is formed.
[0012]
Therefore, in the invention of claim 2, the same effect as that of the invention of claim 1 is produced, and in addition to this, the dish-like portion and the shaft member are firmly and reliably connected by the engaging portions formed respectively. Therefore, the connected and supported state of the dish-like portion can be ensured.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Next, the present invention will be described with reference to specific examples. The contact material 1 which concerns on this invention is used for the anaerobic digestion process of organic wastewater as an example, and an example of the shape is shown in FIG. The contact material 1 shown here includes a dish-like portion 2 and a shaft member 3 connected to both the front and back sides (upper and lower sides).
[0014]
Both the dish-shaped part 2 and the shaft member 3 are made of plastic, and the dish-shaped part 2 is integrally formed with a peripheral wall part 5 having a shape that is tapered upward at the peripheral part of the circular flat plate part 4. It has the shape formed in The surfaces of the flat plate portion 4 and the peripheral wall portion 5 are preferably roughened in order to improve the adhesion and retention of sludge.
[0015]
Further, a connecting boss portion 6 corresponding to the fitting protrusion portion of the present invention is formed at the center portion of the flat plate portion 4 so as to protrude on both the front and back sides. The boss portion 6 is for fitting the shaft member 3 and is formed in a relatively short cylindrical shape within a range where necessary strength can be maintained. On the outer peripheral surface of the base end portion of the boss portion 6, an annular convex portion 7 corresponding to the engaging portion of the present invention that functions as a retaining member for the shaft member 3 is formed.
[0016]
Furthermore, the 2nd boss | hub part 8 is formed in the front and back both surfaces of the said flat plate part 4 concentrically with the boss | hub part 6. As shown in FIG. The second boss portion 8 is for securing the connection strength between the dish-like portion 2 and the shaft member 3 and is formed in an annular shape so as to surround the outer periphery of the base end portion of the boss portion 6. . The distance between the outer peripheral surface of the boss portion 6 and the inner peripheral surface of the second boss portion 8 is such that the tip end portion of the shaft member 3 is thick or the cylindrical tip end portion of the shaft member 3 is closely fitted. Set to dimensions. Therefore, the axial length (height) of the second boss portion 8 is as short as several millimeters.
[0017]
On the other hand, the shaft member 3 has both a function as a support material for connecting and supporting the dish-shaped part 2 and a function as a spacer for keeping the distance between the dish-shaped parts 2 at a constant interval, and at least both ends. Is formed in a hollow shaft shape that fits closely to the boss portion 6. On the inner surface of the hollow shaft-shaped portion, an annular recess 9 is formed which engages with the protrusion 7 in the boss portion 6 and functions as a retainer. Therefore, the dimension from the end portion of the shaft member 3 to the concave portion 9 coincides with the dimension from the surface of the flat plate portion 4 to the convex portion 7.
[0018]
In addition, a plurality of (for example, six) slits 10 penetrating both the front and back surfaces are radially formed around the central portion of the flat plate portion 4 in the portion extending from the flat plate portion 4 to the peripheral wall portion 5 in the dish-shaped portion 2. ing. This slit 10 is for reducing resistance by circulating the drainage when the dish-shaped part 2 is pulled up from the drainage or submerged in the drainage.
[0019]
Said dish-shaped part 2 is arranged in the waste water treatment tank in the state which overlapped in the up-down direction and the horizontal direction, without contacting each other. An example of the arrangement state is shown in FIG. 2. First, the shaft member 3 is erected on the lower frame member 11. In addition, as the adjacent shaft members 3, those having different lengths are used. This is for shifting the adjacent dish-like portions 2 in the depth direction.
[0020]
The boss portion 6 of the dish-like portion 2 is fitted and attached to the upper end portion of the lowermost shaft member 3. In that case, since the boss portion 6 is closely fitted to the upper end portion of the shaft member 3 and the convex portion 7 is engaged with the concave portion 9 of the shaft member 3, the boss portion 6 is firmly connected in a state where both are prevented from coming off. Is done. Further, since the tip end portion of the shaft member 3 is sandwiched between the boss portion 6 and the second boss portion 8, the dish-like portion 2 and the shaft member 3 are securely and firmly connected also in this respect. The
[0021]
The second-stage shaft member 3 is fitted and attached to the upper boss portion 6 in the lowermost dish-like portion 2 attached in this manner. Also in this case, the lower end portion of the shaft member 3 is brought into close contact with the boss portion 6 and the lower end portion of the shaft member 3 is sandwiched between the boss portion 6 and the second boss portion 8. Since the concave portion 9 on the inner peripheral surface of the shaft member 3 engages with the convex portion 7 on the outer peripheral surface of the boss portion 6, the shaft member 3 and the dish-shaped portion 2 are reliably and firmly connected.
[0022]
By connecting the plate-like portion 2 and the shaft member 3 so as to be stacked in this manner, the plurality of plate-like portions 2 are connected and arranged in the vertical direction with a predetermined interval. Then, by fixing the shaft member 3 at the uppermost end to the upper frame member 12, a plurality of dish-like portions 2 are held in a straight line and in a plurality of rows between the upper and lower frame members 11, 12. At the same time, the respective dish-like portions 2 are arranged so as to overlap each other in the vertical direction and the horizontal direction.
[0023]
Therefore, in the contact material 1 described above, the plate-like portions 2 and the shaft members 3 are fitted and connected so as to be alternately stacked, so that a large number of the plate-like portions 2 are connected and arranged at regular intervals. Can be supported in a state. Moreover, the space | interval of the dish-shaped parts 2 can be set suitably by setting the length of the shaft member 3 suitably. Therefore, the contact material 1 can be easily assembled as a predetermined structure due to the short length of the fitting parts and the small number of parts as a whole, and the workability thereof is good.
[0024]
In this way, a large number of contact members 1 held between the upper and lower frame members 11 and 12 are installed in a predetermined processing tank (not shown) together with the frame members 11 and 12 and injected into the processing tank. Sludge propagated in the wastewater adheres to and accumulates on the contact material 1. Moreover, the organic substance in the waste_water | drain newly supplied to the processing tank is decomposed | disassembled by the sludge currently hold | maintained at the contact material 1, and waste water is purified.
[0025]
In addition, this invention is not limited to said specific example. In other words, the dish-like portion 2 only needs to have a portion that spreads in the horizontal direction, so the shape does not have to be circular, and may be an appropriate shape such as a rectangle, or a flat plate portion. May be concave or convex, and the projecting peripheral wall may have a vertically rising shape other than a tapered shape. In addition, since the engagement portion in the present invention may be any structure as long as it functions as a stopper between the dish-shaped portion and the shaft member, one of the convex portion and the concave portion described above is provided in the dish-shaped portion, May be provided on the shaft member, or a projecting portion may be formed on each of the dish-like portion and the shaft member. Further, in the above specific example, the boss portion is fitted into the shaft member, but conversely, the shaft member may be fitted into the boss portion. Therefore, the shaft member does not need to be a hollow shaft, and may be a solid shaft.
[0026]
【The invention's effect】
As described above, according to the first aspect of the present invention, the plurality of dish-like portions are connected in the vertical direction by the shaft members fitted to the fitting protrusions on the front and back surfaces, and the distance between them is the axis. The length of the member is set to about the length, and as a result, the dish-like portion can be supported in a state of being arranged at regular intervals in the depth direction inside the processing tank. That is, by simply connecting the shaft member and the dish-shaped portion alternately, the dish-shaped portions can be arranged and supported at a constant interval, and the workability can be improved.
[0027]
According to the invention of claim 2, in addition to the same effect as that of the invention of claim 1, the dish-like portion and the shaft member are firmly and reliably connected by the engaging portions formed respectively. Therefore, the connection and support state of the dish-like portion can be ensured.
[Brief description of the drawings]
FIG. 1 is an exploded view of an example of the present invention and a part thereof is shown in cross section.
FIG. 2 is a partial view showing a state in which the contact materials are arranged between upper and lower frame members.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Contact material, 2 ... Dish-shaped part, 3 ... Shaft member, 4 ... Flat plate part, 5 ... Perimeter wall part, 6 ... Boss part, 7 ... Convex part, 9 ... Concave part.

Claims (2)

活性汚泥を付着させて保持させる皿状部を備え、その皿状部が処理槽の内部に上下方向に間隔をあけて多数配列される排水処理用接触材において、
前記皿状部の中心部の表裏両面側に嵌合用突出部が形成され、前記上下方向に間隔をあけて配列される複数の皿状部のうち下側の皿状部における表面側の嵌合用突出部に支持材およびスペーサとしての軸部材の下端部が嵌合させられて固定されるとともに、その軸部材の上端部が上側の皿状部における裏面側の嵌合用突出部に嵌合させられて固定されることにより、前記複数の皿状部が上下方向に連結されて一体化され、さらに最下端の皿状部における裏面側の嵌合用突出部に嵌合させられて固定された軸部材が前記処理槽の内部に配置された下側の枠部材に立設されるとともに最上端部の軸部材が前記処理槽の内部に配置された上側の枠部材に固定されることにより、前記複数の皿状部が上下方向に直線状に配列された状態で前記上下の枠部材の間に支持されることを特徴とする排水処理用接触材。
In the contact material for wastewater treatment provided with a dish-like part to which activated sludge is adhered and held, and a large number of the dish-like part are arranged at intervals in the vertical direction inside the treatment tank,
Fitting protrusions are formed on both front and back sides of the central portion of the dish-shaped portion, and for fitting on the front side of the lower dish-shaped portion among the plurality of dish-shaped portions arranged at intervals in the vertical direction The lower end portion of the shaft member as the support member and spacer is fitted and fixed to the protruding portion, and the upper end portion of the shaft member is fitted to the rear-side fitting protruding portion in the upper dish-shaped portion. The plurality of plate-like portions are connected and integrated in the up-down direction by being fixed to each other, and further, the shaft member is fitted and fixed to the fitting protrusion on the back surface side of the lowermost plate-like portion. by the this but is fixed to the upper frame member the shaft member is arranged inside the treatment tank interior is erected on the lower side of the frame member disposed Rutotomoni uppermost portion of the processing bath, the It said upper and lower frame in sequence has been state plurality of disc-shaped portion is straight in the vertical direction Wastewater treatment contact material, characterized in that it is supported between the wood.
前記嵌合突出部とこの嵌合突出部に嵌合する前記軸部材とに、軸線方向に対して係合してこれら嵌合突出部と軸部材とを抜け止めする係合部がそれぞれ形成されていることを特徴とする請求項1に記載の排水処理用接触材。  Engagement portions that engage in the axial direction and prevent the fitting protrusion and the shaft member from coming off are formed on the fitting protrusion and the shaft member that fits in the fitting protrusion, respectively. The contact material for wastewater treatment according to claim 1, wherein the contact material is a wastewater treatment contact material.
JP2002287618A 2002-09-30 2002-09-30 Wastewater treatment contact material Expired - Lifetime JP4310381B2 (en)

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JP4769591B2 (en) * 2006-02-07 2011-09-07 国立大学法人東京海洋大学 Microbe-supported single body and sewage purification device for sewage purification
JP2008029943A (en) * 2006-07-27 2008-02-14 Kanazawa Univ Microorganism carrier and waste water treatment equipment
JP2008029945A (en) * 2006-07-27 2008-02-14 Spring Field Kk Microbial carrier for waste water treatment, and waste water treatment apparatus

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