JPH0639838Y2 - Cylindrical horizontal aeration tank - Google Patents
Cylindrical horizontal aeration tankInfo
- Publication number
- JPH0639838Y2 JPH0639838Y2 JP1990009745U JP974590U JPH0639838Y2 JP H0639838 Y2 JPH0639838 Y2 JP H0639838Y2 JP 1990009745 U JP1990009745 U JP 1990009745U JP 974590 U JP974590 U JP 974590U JP H0639838 Y2 JPH0639838 Y2 JP H0639838Y2
- Authority
- JP
- Japan
- Prior art keywords
- aeration
- tank
- aeration tank
- axis
- wastewater
- 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 - Lifetime
Links
- 238000005273 aeration Methods 0.000 title claims description 67
- 239000002351 wastewater Substances 0.000 claims description 37
- 239000010802 sludge Substances 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 9
- 238000001556 precipitation Methods 0.000 claims description 4
- 238000007664 blowing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 241001148470 aerobic bacillus Species 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- Biological Treatment Of Waste Water (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は、多孔性浮遊担体を用いた筒形横置式の流動担
体型曝気槽の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an improvement of a horizontal tubular fluid carrier type aeration tank using a porous floating carrier.
（従来の技術） 近年、含有機性廃水内にウレタンや多孔性セラミック等
の多孔性浮遊担体と活性汚泥とを混在させ、その内部へ
空気を吹き込むことによって前記廃水等を旋回流として
流動せしめ、生物学的に廃水を曝気処理するようにした
筒形横置式曝気槽が広く利用されている（特願昭47-846
48号等）。(Prior Art) In recent years, porous sludge carriers such as urethane and porous ceramics and activated sludge are mixed in the contained mechanical wastewater, and the wastewater and the like are made to flow as a swirling flow by blowing air into the inside, A cylindrical horizontal aeration tank that biologically aeration-processes wastewater is widely used (Japanese Patent Application No. 47-846).
No. 48).
第６図はこの種の筒形横置式曝気槽の概要を示すもので
あり、曝気槽１の一側より槽内へ供給された来た含有機
性廃水W1は、散気装置２から噴出する空気Ａによって所
謂旋回流Ｓとされ、曝気処理部1a内に予かじめ存在する
多孔性浮遊担体３やこれに成着した活性汚泥４と共に第
７図に示す如き状態で旋回する間に、順次好気性菌によ
る生物的浄化処理を受けることになる。FIG. 6 shows an outline of this type of a horizontal horizontal aeration tank. The contained mechanical wastewater W 1 supplied into the tank from one side of the aeration tank 1 is jetted from the air diffuser 2. The so-called swirling flow S is generated by the air A to be swirled, and while swirling in a state as shown in FIG. 7 together with the porous floating carrier 3 and the activated sludge 4 deposited on the porous floating carrier 3 pre-existing in the aeration processing unit 1a, Sequentially, they will undergo biological purification treatment by aerobic bacteria.
浄化された処理済み廃水W2は活性汚泥と共に多孔性の隔
壁板５を通して沈殿部1b内へ移流し、順次曝気槽１の他
方側より槽外へ放流されて行く。また、沈殿部1b内で分
離された活性汚泥は適宜の方法により曝気処理部1aの上
流側へ返送されて行く。The purified treated wastewater W 2 is admitted together with the activated sludge through the porous partition plate 5 into the settling section 1b, and is sequentially discharged from the other side of the aeration tank 1 to the outside of the tank. The activated sludge separated in the settling section 1b is returned to the upstream side of the aeration processing section 1a by an appropriate method.
ところで、前記筒形横置式曝気槽１にあっては、廃水Ｗ
を曝気槽１の一側から他側へ向けて移流せしめる構成と
なっており、しかも大量の活性汚泥を前述の如く曝気処
理部1a内へ返送するようにしているため、曝気処理部1a
内を流通する廃水Ｗの流速が必然的に増加することにな
る。その結果、曝気処理部1a内の前記浮遊担体３も廃水
Ｗの流れに乗って曝気槽１内をその軸線Ｐ方向へ流動す
ることになる。即ち、前記浮遊担体３は空気Ａの吹き込
みによる旋回流Ｓに乗って第７図の如き状態で回流する
ものの、その一部は廃水Ｗの軸線方向の流れに乗って下
流側へ移流することになり、時間の経過と共に隔壁板５
の近傍ほど浮遊担体３の分散密度が高くなる。By the way, in the tubular horizontal aeration tank 1, the waste water W
Of the aeration tank 1 from one side to the other side, and since a large amount of activated sludge is returned to the aeration processing section 1a as described above, the aeration processing section 1a
The flow velocity of the wastewater W flowing inside will inevitably increase. As a result, the floating carrier 3 in the aeration processing unit 1a also flows in the aeration tank 1 in the direction of the axis P along with the flow of the waste water W. That is, the floating carrier 3 rides on the swirling flow S caused by the blowing of the air A and circulates in the state as shown in FIG. 7, but a part of the floating carrier 3 rides on the axial flow of the waste water W and moves to the downstream side. And, with the passage of time, the partition plate 5
The closer to, the higher the dispersion density of the floating carrier 3.
一方、曝気処理部1a内の浮遊担体３の分散密度に斑が生
ずると、曝気処理能力が相対的に低下する。そのため、
通常は隔壁板５の近傍に集まった浮遊担体３を、エアー
リフトポンプ（図示省略）等を用いて処理部1a内へ再分
散する機能を設け、前記処理能力の低下を防いでいる。On the other hand, if the dispersion density of the floating carrier 3 in the aeration processing unit 1a is uneven, the aeration processing capability is relatively reduced. for that reason,
Usually, a function of redispersing the floating carriers 3 gathered in the vicinity of the partition plate 5 into the processing unit 1a by using an air lift pump (not shown) or the like is provided to prevent the decrease of the processing capacity.
しかし、隔壁板５の近傍に集まった浮遊担体３を処理部
1a内へ均等に再分散することは、担体３そのものが浮遊
性の軽量物質であることとも相俟って極めて困難なこと
であり、浮遊担体３の下流側への片寄り量が多ければ多
いほどその困難性が増大する。However, the floating carrier 3 gathered in the vicinity of the partition plate 5 is treated by the processing unit.
It is extremely difficult to re-disperse it uniformly in 1a, together with the fact that the carrier 3 itself is a floating lightweight substance, and it is large if the amount of offset of the floating carrier 3 to the downstream side is large. The difficulty increases.
（考案が解決しようとする課題） 本考案は、従前の多孔性浮遊担体を用いた筒形横置式曝
気槽に於ける上述の如き問題、即ち（イ）浮遊担体３が
処理部1aの下流側へ片寄りがちとなり、曝気処理能力が
低下すること、（ロ）浮遊担体３の片寄りが激しいと、
これを再分散させるために大掛りな再分散装置を必要と
することになり、曝気槽の製造コストが上昇すること等
の問題を解決せんとするものであり、極めて簡単な構造
物を曝気槽１の内壁面に付設することにより、浮遊担体
３の下流側への片寄りを著しく減少できるようにした筒
形横置式曝気槽を提供するものである。(Problems to be Solved by the Invention) The present invention has the above-mentioned problems in the conventional tubular horizontal aeration tank using the porous floating carrier, that is, (a) the floating carrier 3 is located on the downstream side of the processing section 1a. If the aeration treatment capacity decreases, and (b) the floating carrier 3 is heavily biased,
To redisperse this, a large-scale redispersion device is required, and it is intended to solve problems such as an increase in the manufacturing cost of the aeration tank. By providing it on the inner wall surface of No. 1, it is possible to provide a cylindrical horizontal aeration tank in which the deviation of the floating carrier 3 toward the downstream side can be significantly reduced.
（課題を解決するための手段） 本件考案者は、この種の筒形横置式曝気槽内に於ける浮
遊担体３の流動状況を悉に検討した結果、処理部1a内に
於ける廃水Ｗの旋回流速及び廃水Ｗの下流側への流速を
一定とした場合には、（イ）旋回流Ｓが第８図（イ）の
如く、側面視に於いて槽の軸線Ｐとほぼ垂直状（α＝90
°）に流れているとき、担体３の下流側への移動が最も
少なくなること、（ロ）前記旋回流Ｓの方向と軸線Ｐと
の側面視に於ける交叉角αが、第８図（ロ）の様に大き
くなるほど、担体３の下流側への移動が大きくなること
を見出した。(Means for Solving the Problem) The present inventor thoroughly examined the flow state of the floating carrier 3 in the tubular horizontal aeration tank of this kind, and as a result, the inventor of the waste water W in the treatment section 1a was examined. When the swirling flow velocity and the flow velocity of the wastewater W to the downstream side are constant, (a) the swirling flow S is substantially vertical to the tank axis P (α when viewed from the side) as shown in FIG. = 90
8), the movement of the carrier 3 to the downstream side is minimized, and (b) the crossing angle α between the direction of the swirling flow S and the axis P in a side view is shown in FIG. It has been found that the larger the movement becomes, the larger the movement of the carrier 3 toward the downstream side becomes.
本考案は前記知見に基づいて創作されたものであり、曝
気槽１の内壁面にリング状の整流壁を設けて廃水Ｗの曝
気旋回流Ｓを整流し、その流動方向を側面視に於いて槽
の軸線Ｐと垂直状となるように整流することにより、廃
水Ｗ内の担体３の下流側への流動を少なくするものであ
る。The present invention was created on the basis of the above-mentioned findings. A ring-shaped straightening wall is provided on the inner wall surface of the aeration tank 1 to straighten the aeration swirl flow S of the wastewater W, and its flow direction is viewed from the side. The flow is rectified so as to be perpendicular to the axis P of the tank, so that the flow of the carrier 3 in the wastewater W to the downstream side is reduced.
即ち、本件考案は、多孔性の隔壁板により、内部を廃水
の流入口を備えた曝気処理部と処理済み廃水の流出口を
備えた沈澱部とに分割すると共に、前記曝気処理部の含
有機性廃水内には多孔性浮遊担体と活性汚泥とを混在さ
せ、曝気処理部の下方部に槽軸線Ｐの方向に配設した散
気装置から内部に吹き込んだ空気Ａにより、前記廃水等
を槽内壁面に沿う旋回流Ｓとするようにした筒型横置式
曝気槽に於いて、槽内径が1000〜3000mmの曝気槽の曝気
処理部の内壁面に、高さが30〜200mmのリング状の整流
壁を曝気槽の軸線Ｐに対して垂直方向に、且つ軸線Ｐの
方向に1000mm以内の間隔Ｌをもって配設したことを考案
の基本構成とするものである。That is, according to the present invention, a porous partition plate divides the inside into an aeration processing unit having an inlet for waste water and a precipitation unit having an outlet for treated waste water, and a device for containing the aeration processing unit. Porous waste carrier and activated sludge are mixed in the functional wastewater, and the wastewater and the like are tanked by the air A blown inside from the air diffuser arranged in the direction of the tank axis P below the aeration processing section. In a cylindrical horizontal aeration tank configured to generate a swirling flow S along the inner wall surface, a ring-shaped member having a height of 30 to 200 mm is formed on the inner wall surface of the aeration processing unit of the aeration tank having a tank inner diameter of 1000 to 3000 mm. The rectifying wall is arranged in the direction perpendicular to the axis P of the aeration tank and at a distance L within 1000 mm in the direction of the axis P, which is the basic configuration of the invention.
（作用） 槽内壁面に設けられたリング状の整流壁６により、散気
装置２からの空気Ａの吹き込により生じた廃水Ｗの旋回
流Ｓの方向が、第３図に示す如く側面視に於いて槽軸線
Ｐと直交する方向の流れに整流される。(Operation) The direction of the swirling flow S of the waste water W generated by the blowing of the air A from the air diffuser 2 is changed by the ring-shaped straightening wall 6 provided on the inner wall surface of the tank as shown in FIG. At this time, the flow is rectified into a flow in a direction orthogonal to the tank axis P.
その結果、廃水Ｗと共に槽内を旋回する浮遊担体３に作
用する力の方向は、ほぼ軸線Ｐと直交する方向となり、
軸線Ｐの方向への運動力が極めて小さくなるために、担
体３の下流側への移動が大幅に減少する。As a result, the direction of the force acting on the floating carrier 3 that swirls in the tank together with the waste water W is a direction substantially orthogonal to the axis P,
Since the kinetic force in the direction of the axis P is extremely small, the movement of the carrier 3 to the downstream side is significantly reduced.
（実施例） 以下、図面に基づいて本考案の実施例を説明する。Embodiment An embodiment of the present invention will be described below with reference to the drawings.
第１図は、本考案に係る筒形横置式曝気槽の要部を示す
縦断面図であり、第２図は第１図のイ−イ視断面図であ
る。FIG. 1 is a vertical cross-sectional view showing a main part of a tubular horizontal aeration tank according to the present invention, and FIG. 2 is a cross-sectional view taken along the line II of FIG.
図に於いて１は曝気槽、1aは曝気処理部、1bは沈殿部、
２は散気装置、３は多孔性浮遊担体、４は活性汚泥、５
は隔壁板、６は整流壁である。In the figure, 1 is an aeration tank, 1a is an aeration treatment section, 1b is a precipitation section,
2 is an air diffuser, 3 is a porous floating carrier, 4 is activated sludge, 5
Is a partition plate, and 6 is a straightening wall.
曝気槽１はグラスファイバー等を含む合成樹脂材により
筒形に形成されており、その外径は1500〜3000mm程度に
選定されている。又、曝気槽１の内部は多孔性の隔壁板
５によって曝気処理部1aと沈殿部1bに分割されており、
流入口1cより槽内へ流入した含有機性廃水W1が、所定時
間槽内で曝気処理を受けた後、沈殿部1bを経て槽外へ排
出されて行く。The aeration tank 1 is made of a synthetic resin material containing glass fiber or the like in a cylindrical shape, and its outer diameter is selected to be about 1500 to 3000 mm. Further, the inside of the aeration tank 1 is divided by a porous partition plate 5 into an aeration processing section 1a and a precipitation section 1b,
The contained mechanical wastewater W 1 flowing into the tank through the inflow port 1c is aerated in the tank for a predetermined time, and then discharged to the outside of the tank through the settling section 1b.
前記曝気処理部1a内の廃水W1には、発泡ウレタン等の多
孔性浮遊担体３が混入されており、該担体３には所謂活
性汚泥４が成着している。また、廃水W1内には、活性汚
泥４の微粒が浮遊状で混在している。A porous floating carrier 3 such as urethane foam is mixed in the waste water W 1 in the aeration processing unit 1a, and so-called activated sludge 4 is deposited on the carrier 3. Moreover, in the wastewater W 1 , fine particles of the activated sludge 4 are mixed in a floating state.
前記散気装置２は処理部1aの下方部に位置して軸線Ｐの
方向に配設されており、コンプレッサー（図示省略）か
ら該散気装置２を通して空気Ａを噴出することにより、
第２図に示す如く廃水Ｗは曝気槽１の内壁面に沿って旋
回運動をし、所謂旋回流Ｓとなって回流する。The air diffuser 2 is located in the lower part of the processing unit 1a and is arranged in the direction of the axis P. By ejecting air A from a compressor (not shown) through the air diffuser 2,
As shown in FIG. 2, the wastewater W makes a swirling motion along the inner wall surface of the aeration tank 1 and becomes a so-called swirling flow S and is circulated.
前記整流壁６は、高さＨが30〜200mm程度のリング体で
あり、曝気槽１の内壁面に槽軸線Ｐと垂直方向に配設さ
れ、その内側端を槽内壁面より軸芯Ｐの方向へ突出せし
めた状態で固着されている。The straightening wall 6 is a ring body having a height H of about 30 to 200 mm, and is arranged on the inner wall surface of the aeration tank 1 in a direction perpendicular to the tank axis P, and the inner end of the straightening wall 6 with the axis P from the inner wall surface of the tank. It is fixed in a state of protruding in the direction.
又、前記整流壁６は曝気槽１の軸線Ｐの方向に600〜100
0mmの間隔で配設されている。The straightening wall 6 is 600 to 100 in the direction of the axis P of the aeration tank 1.
It is arranged at an interval of 0 mm.
尚、前記整流壁６の高さＨは30〜200mm程度が最適であ
り、槽内径が1,000〜3,000mmφの場合には、前記高さＨ
は30mm以上を必要とする。高さＨが30mm以下の場合に
は、後述する廃水W1の旋回流Ｓに対する整流効果が急激
に低下し、また前記高さＨが200mmを越えると、整流効
果は上昇するものの、廃水W1の軸方向への流動性に悪影
響を及ぼすからである。The height H of the rectifying wall 6 is optimally about 30 to 200 mm, and when the inner diameter of the tank is 1,000 to 3,000 mmφ, the height H is
Requires 30 mm or more. When the height H is 30 mm or less, the rectification effect on the swirl flow S of the wastewater W 1 which will be described later sharply decreases, and when the height H exceeds 200 mm, the rectification effect increases, but the wastewater W 1 This is because it adversely affects the fluidity in the axial direction of.
同様に、前記整流壁６の取付ピッチＬは600〜1000mmが
適当であり、ピッチＬを1000mm以上とすると旋回流Ｓに
対する整流効果が大幅に低下する。Similarly, the mounting pitch L of the rectifying wall 6 is suitably 600 to 1000 mm, and if the pitch L is 1000 mm or more, the rectifying effect on the swirling flow S is significantly reduced.
前記整流壁６を設けることにより、旋回流Ｓが整流さ
れ、その結果第３図に示す如く、旋回流Ｓの側面視に於
ける方向が、曝気槽１の軸線Ｐと垂直状となり、担体３
に作用する軸線方向への力が大幅に減少して、その下流
側への移行が防止される。The swirl flow S is rectified by providing the straightening wall 6, and as a result, the direction of the swirl flow S in a side view becomes vertical to the axis P of the aeration tank 1 as shown in FIG.
The axial force acting on the is greatly reduced, and its downstream movement is prevented.
尚、本実施例では、前記整流壁６を曝気槽１とは別体に
形成し、これを槽内壁面へ固着する構成としているが、
曝気槽１の形成時に整流壁６を一体的に形成するように
してもよい。In this embodiment, the straightening wall 6 is formed separately from the aeration tank 1 and is fixed to the inner wall surface of the tank.
The flow regulating wall 6 may be integrally formed when the aeration tank 1 is formed.
また、本実施例では整流壁６を板体で形成しているた
め、その断面形状は矩形状になっているが、断面形状が
三角形であっても、或いは円形（パイプ材を用いた場
合）、半円形（半割パイプを用いた場合）であってもよ
い。Further, in the present embodiment, since the flow regulating wall 6 is formed of a plate body, its cross-sectional shape is rectangular, but even if the cross-sectional shape is triangular or circular (when using a pipe material). It may be a semicircle (when a half pipe is used).
更に、本実施例では散気装置２を曝気槽１の最底部に設
けるようにしているが、第４図に示す如く散気装置２を
内壁面の傾下方部に設け、槽内に円形の循環旋回流Ｓを
発生するようにしてもよい。Further, in the present embodiment, the air diffuser 2 is provided at the bottom of the aeration tank 1. However, as shown in FIG. 4, the air diffuser 2 is provided in the inclined lower part of the inner wall surface so as to form a circular shape in the tank. The circulating swirl flow S may be generated.
加えて、本実施例では曝気槽１の胴部を一体的に形成す
るか、若しくは複数の矩筒体を連結することにより形成
しているが、第５図に示す如く、上・下二つ割り状に形
成した上部半割胴７と下部半割胴８とを組合せて、曝気
槽１を形成する構成としてもよい。In addition, in this embodiment, the body of the aeration tank 1 is integrally formed or is formed by connecting a plurality of rectangular cylinders, but as shown in FIG. The aeration tank 1 may be formed by combining the upper half-split cylinder 7 and the lower half-split cylinder 8 formed in 1.
尚、この場合には、上部半割胴７は断面視に於いてほぼ
半円形に、また、下部半割胴８は両側壁の下方を円弧状
とした矩形に形成されており、両者を組み合わせた曝気
槽１の断面は所謂ダルマ形を呈している。In this case, the upper half-split cylinder 7 is formed into a substantially semi-circular shape in cross section, and the lower half-split cylinder 8 is formed into a rectangular shape whose lower portions on both side walls are arcuate. The cross section of the aeration tank 1 has a so-called dharma shape.
（考案の効果） 本考案は上述の通り、曝気槽１の内壁面に高さが30mm以
上のリング状の整流壁６を、その軸線方向と垂直状に、
しかも相互の間隔が1000mm以下となるように設けた構成
としている。(Effect of the Invention) As described above, the present invention has the ring-shaped straightening wall 6 having a height of 30 mm or more on the inner wall surface of the aeration tank 1 in a direction perpendicular to the axial direction thereof.
Moreover, it is configured so that the mutual distance is 1000 mm or less.
その結果、散気装置２からの空気Ａの吹き込みにより発
生した廃水W1等の旋回流Ｓが、側面視に於いて槽の軸線
Ｐと垂直方向の流れとなり、廃水W1内に混在する担体３
に作用する軸線方向の運動力が著しく少なくなって、担
体３の下流側への移動が防止される。As a result, the swirling flow S of the waste water W 1 or the like generated by the blowing of the air A from the air diffuser 2 becomes a flow in the direction perpendicular to the axis P of the tank in a side view, and the carrier mixed in the waste water W 1 Three
The axial force acting on the carrier is significantly reduced, and the carrier 3 is prevented from moving to the downstream side.
これにより、曝気処理部1a内の浮遊担体３の分散がほぼ
均一となり、より高い浄化処理を達成することが可能と
なる。As a result, the dispersion of the floating carrier 3 in the aeration processing unit 1a becomes substantially uniform, and a higher purification process can be achieved.
本考案は上述の通り、優れた実用的効用を奏するもので
ある。As described above, the present invention has excellent practical utility.
第１図は、本考案の第１実施例に係る曝気槽の縦断面概
要図であり、第２図は第１図のイ−イ視断面図である。 第３図は廃水Ｗの旋回状態を示す説明図である。 第４図は本考案の第２実施例に係る曝気槽の廃水Ｗの旋
回状態を示すものである。 第５図は、本考案の第３実施例に係る曝気槽の縦断面図
である。 第６図は、従前の筒形横置式曝気槽の縦断面図であり、
第７図は廃水の旋回状態の説明図である。 第８図（イ）及び第８図（ロ）は側面視に於ける廃水旋
回流Ｓの流れ方向の説明図である。 W1……含有機性廃水、W2……処理済み廃水 Ａ……空気、Ｓ……旋回流 Ｐ……槽の軸線、Ｈ……整流壁の高さ Ｌ……整流壁の間隔、１……筒形横置式曝気槽 1a……曝気処理部、1b……沈殿部 ２……散気装置、３……多孔性浮遊担体 ４……活性汚泥、５……隔壁板 ６……整流壁、７……上部半割胴 ８……下部半割胴FIG. 1 is a schematic vertical sectional view of an aeration tank according to a first embodiment of the present invention, and FIG. 2 is a sectional view taken along line ii of FIG. FIG. 3 is an explanatory view showing a turning state of the waste water W. FIG. 4 shows the swirling state of the waste water W in the aeration tank according to the second embodiment of the present invention. FIG. 5 is a vertical sectional view of an aeration tank according to a third embodiment of the present invention. FIG. 6 is a longitudinal sectional view of a conventional tubular horizontal aeration tank,
FIG. 7 is an explanatory diagram of a swirling state of waste water. 8 (a) and 8 (b) are explanatory views of the flow direction of the wastewater swirling flow S in a side view. W 1 …… Containing functional wastewater, W 2 …… Treatment wastewater A …… Air, S …… Swirl flow P …… Vessel axis, H …… Height of rectifying wall L …… Distance of rectifying wall, 1 ...... Cylindrical horizontal aeration tank 1a …… Aeration processing part, 1b …… Settling part 2 …… Aeration device 3 …… Porous floating carrier 4 …… Activated sludge 5 …… Partition plate 6 …… Blanking wall , 7 ... Upper half split cylinder 8 ... Lower half split cylinder
Claims (2)
口を備えた曝気処理部と処理済み廃水の流出口を備えた
沈澱部とに分離すると共に、前記曝気処理部の含有機性
廃水内には多孔性浮遊担体と活性汚泥とを混在させ、曝
気処理部の下方部に槽軸線Ｐの方向に配設した散気装置
から内部に吹き込んだ空気Ａにより、前記廃水等を槽内
壁面に沿う旋回流Ｓとするようにした筒形横置式曝気槽
に於いて、槽内径が1000〜3000mmの曝気槽（１）の曝気
処理部（1a）の内壁面に、高さが30〜200mmのリング状
の整流壁（６）を曝気槽（１）の軸線（Ｐ）に対して垂
直方向に、且つ軸線（Ｐ）の方向に1000mm以内の間隔
（Ｌ）をもって配設したことを特徴とする筒形横置式曝
気槽。1. A porous partition plate separates the inside into an aeration processing section having an inlet for waste water and a precipitation section having an outlet for treated waste water, and the aeration function of the aeration processing section. Porous floating carrier and activated sludge are mixed in the wastewater, and the wastewater and the like are introduced into the tank by the air A blown into the inside from an air diffuser arranged in the direction of the tank axis P below the aeration processing section. In a tubular horizontal aeration tank configured to generate a swirling flow S along a wall surface, the height of the inner wall surface of the aeration processing part (1a) of the aeration tank (1) having an inner diameter of 1000 to 3000 mm is 30 to 30 A 200 mm ring-shaped straightening wall (6) is arranged vertically to the axis (P) of the aeration tank (1) and at intervals (L) within 1000 mm in the direction of the axis (P). This is a cylindrical horizontal aeration tank.
がほぼ半円状であり且つその下半分がほぼ矩形状のダル
マ形形状とした請求項（１）に記載の筒形横置式曝気
槽。2. The tubular shape according to claim 1, wherein the aeration tank (1) has a cross-sectional shape of a dalma shape in which an upper half thereof is substantially semicircular and a lower half thereof is substantially rectangular. Horizontal aeration tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990009745U JPH0639838Y2 (en) | 1990-02-02 | 1990-02-02 | Cylindrical horizontal aeration tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990009745U JPH0639838Y2 (en) | 1990-02-02 | 1990-02-02 | Cylindrical horizontal aeration tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03102298U JPH03102298U (en) | 1991-10-24 |
| JPH0639838Y2 true JPH0639838Y2 (en) | 1994-10-19 |
Family
ID=31513333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990009745U Expired - Lifetime JPH0639838Y2 (en) | 1990-02-02 | 1990-02-02 | Cylindrical horizontal aeration tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0639838Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK1971555T3 (en) * | 2006-01-04 | 2013-06-24 | Clewer Oy | BIOREACTOR AND METHOD OF BIOLOGICAL CLEANING OF WATER |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4939949A (en) * | 1972-08-25 | 1974-04-15 | ||
| JPS5038959A (en) * | 1973-08-13 | 1975-04-10 | ||
| JPS5043987U (en) * | 1973-08-17 | 1975-05-02 | ||
| JPS5188865A (en) * | 1975-01-31 | 1976-08-03 | ||
| JPS527746U (en) * | 1975-07-01 | 1977-01-20 | ||
| JPS6017274U (en) * | 1983-07-14 | 1985-02-05 | オリンポス株式会社 | Airbrush cleaning spray container |
-
1990
- 1990-02-02 JP JP1990009745U patent/JPH0639838Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03102298U (en) | 1991-10-24 |
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