JPS5817676Y2 - Rotating disk for sewage treatment - Google Patents

Description

【考案の詳細な説明】 この考案は、生物学的な汚水処理における回転円板の改
良に係るものである。[Detailed description of the invention] This invention relates to an improvement of a rotating disk in biological wastewater treatment.

汚水処理用の回転円板においては、多数の円板体を、水
平軸に等間隔に配置して、水平軸の下半分を常に汚水中
に浸漬し、相当の速度で回転して、空気中の露出と汚水
中の浸漬とを交互に行わせるようにして、円板面に付着
した生物膜により、有機物を生物化学的に酸化分解する
ものである。In a rotating disk for sewage treatment, a large number of disks are arranged at equal intervals on a horizontal axis, the lower half of the horizontal axis is always immersed in the wastewater, and the rotating disk is rotated at a considerable speed to absorb air into the air. The biofilm attached to the disc surface is used to biochemically oxidize and decompose organic matter by alternately exposing the disc and immersing it in sewage.

したがって、回転円板面の生物膜面ば常に多量と酸素を
必要とする。Therefore, the biofilm surface of the rotating disk always requires a large amount of oxygen.

従来合成樹脂薄板に同心円周状に無数の凹凸を押割して
接触面の増大と同心的及び放射方向に気液の通路を設け
てなる回転円板式生物酸化装置は公知であるが、これら
の気液の通路は面部において平均的に分布されている構
造になっており、なかには放射状の通路を円周方向に湾
曲せしめているものも公知であるが、回転円板装置の機
能を発揮して合理的な汚水処理を行うためには多数の円
板体を相互に接近させて配設しなければならないので、
処理中に生物膜が肥厚してくると、通水・通気のための
間隙が狭められ、中心部に近い、すなわち、円板内部の
方が大気−暴されにくくなり、この回転円板本来の機能
を損うおそれがあった。Conventionally, a rotating disk type biooxidation device is known, in which a countless number of concave and convex portions are pressed into a thin synthetic resin plate in a concentric circumferential manner to increase the contact surface and provide concentric and radial passages for gas and liquid. The gas-liquid passages have a structure in which they are evenly distributed on the surface, and some are known in which the radial passages are curved in the circumferential direction, but this does not function as a rotating disk device. In order to carry out rational sewage treatment, a large number of disk bodies must be placed close to each other.
As the biofilm thickens during processing, the gap for water passage and ventilation becomes narrower, and the area closer to the center, that is, the inside of the disk, is less exposed to the atmosphere, and the original nature of this rotating disk is reduced. There was a risk of loss of functionality.

この考案は、上記事情に鑑みなされたもので、その要旨
とするところは、多数の同心通路を有する円板体の中心
部寄りにしてかつ枢軸部分よりは外側の位置に、他の同
ら通路と比較して、かなり幅広の拡張同心通路を特設す
るとともに、この拡張同心通路から、この通路のほぼ接
線方向に向かう複数の直線状の通路を設け、これら直線
状通路を前記円板本体の外周縁に開口されて成るもので
、円板体の回転に伴なう通水・通気作用の促進及び生物
膜の肥厚による通水・通気の減少を阻止するようにした
ものである。This idea was devised in view of the above circumstances, and its gist is that a disk body having a large number of concentric passages is located near the center and outside of the pivot portion, so that other concentric passages are In addition to providing a special expanded concentric passageway that is considerably wider than the above, a plurality of linear passageways extending from the expanded concentric passageway in a substantially tangential direction to the passageway are provided, and these linear passageways are connected to the outside of the disk body. It is formed by openings at the periphery, and is designed to promote water flow and ventilation as the disc rotates, and to prevent water flow and ventilation from decreasing due to thickening of the biofilm.

次に、この考案の実施例を図面について説明する。Next, an embodiment of this invention will be described with reference to the drawings.

第１図ないし第３図はこの考案の第一実施例を示すもの
で、この考案の回転円板体１が、処理すべき汚水を収容
したタンク２内に部分的に浸漬されて装架されている状
態を示す。Figures 1 to 3 show a first embodiment of this invention, in which a rotating disk body 1 of this invention is partially immersed and mounted in a tank 2 containing wastewater to be treated. Indicates the state in which

回転円板体１は、回転軸３に沿って等間隔に多数配設さ
れて釦り、１つの回転円板体１は、凹凸断面を有する一
対の薄片部材ｉａ、１ｂの凸部同志を接合して形成され
、各薄片部材１ ａ、ｉｂに形成された凹部１ａテ１
ｂ’及び凸部１ａ“、１ｂ“によって周方向に多数の同
心通路４，４・・・・・・が設けられる。A large number of rotating disk bodies 1 are disposed at equal intervals along the rotation axis 3, and one rotating disk body 1 connects the convex portions of a pair of thin pieces ia and 1b having uneven cross sections. recesses 1a and 1 formed in each thin piece member 1a and ib.
b' and the convex portions 1a", 1b" provide a large number of concentric passages 4, 4, . . . in the circumferential direction.

そして、隣接する円板体１間において、円板体１の中心
部側適宜位置に、前記同心通路４に比べて幅広の拡張同
心通路５が設けられ、この拡張同心通路５からこの通路
５の接線方向に向って、かつ、円板１の外周縁に開口す
る直線状の通路６が複数個等間隔に設けられも直線状通
路６と連通ずる同心通路４及び拡張同心通路６の断面は
、第３図に示すような六角形に形成されるのが充分な空
間が得られるという点で有利であるが、第４図に示すよ
うに、各薄片部材１ａ、１ｂの凹凸部１ ａ’、 １
ｂ’。Between adjacent disc bodies 1, an expanded concentric passage 5 wider than the concentric passage 4 is provided at an appropriate position on the center side of the disc body 1. Even if a plurality of linear passages 6 opening in the tangential direction and at the outer peripheral edge of the disk 1 are provided at equal intervals, the cross sections of the concentric passage 4 and the expanded concentric passage 6 that communicate with the linear passages 6 are as follows: It is advantageous to form a hexagonal shape as shown in FIG. 3 in that sufficient space can be obtained, but as shown in FIG. 1
b'.

１ ａ＃、 １ ｂ’ を同一方向に列設してもよい。1 a# and 1 b' may be arranged in the same direction.

上記のように形成されるこの考案の円板１は、第１図に
示す矢印Ａ及びＢのいずれの方向に回転されてもよく、
矢印Ａ方向、すなわち、反時計方向に回転される場合に
は、直線状通路６が汚水をすくう形となり、この通路６
の外周縁の開口が汚水面から空気中に出るような位置に
至ると、通路６は汚水面に対して汚水中に向う勾配をな
すので、汚水は他の同心通路に流れる以外は急速Ｅこの
通路６内に流込み、これに伴なって空気の吸入も円板内
部斗で迅速に行うことができる。The disk 1 of this invention formed as described above may be rotated in either direction of arrows A and B shown in FIG.
When rotated in the direction of arrow A, that is, in the counterclockwise direction, the linear passage 6 takes the form of scooping up dirty water, and this passage 6
When the opening on the outer periphery of the sewage pipe reaches a position where it exits from the sewage surface into the air, the passage 6 slopes into the sewage water with respect to the sewage surface. The air flows into the passage 6, and accordingly, air can be quickly sucked in by the inner cup of the disc.

また、矢印Ｂ方向、すなわち、時計方向に回転される場
合には、直線状通路６から放出される汚水が遠心力の作
用を受けて（遠心力により放出される物体は円周の接線
方向に飛散する傾向があるため）速く放出されるので、
逆に空気の吸入作用も速くなり、かつ、生物膜の劣化を
阻止し、剥離被膜の排除を効率良く行うことができる。Furthermore, when rotating in the direction of arrow B, that is, clockwise, the wastewater discharged from the straight passage 6 is subjected to the action of centrifugal force (objects discharged by centrifugal force move in the tangential direction of the circumference). because they tend to scatter) and are released quickly.
Conversely, the air suction action becomes faster, the deterioration of the biofilm can be prevented, and the exfoliated film can be efficiently removed.

な釦、第５図はこの考案の別の実施例を示すもので、拡
張同心通路５から互いに対称な接線方向の直線状通路６
及び６′を設けて戊９、円板１０回転方向に関係なく前
記矢印Ａ及びＢ方向の場合の効果を発揮し、通水・通気
効果を一層促進することができる。FIG. 5 shows another embodiment of this invention, in which an extended concentric passage 5 is connected to a symmetrical tangential straight passage 6.
and 6' are provided so that the effects in the directions of arrows A and B can be achieved regardless of the direction of rotation of the circular plate 9 and the disc 10, thereby further promoting water flow and ventilation effects.

【図面の簡単な説明】[Brief explanation of drawings]

第１図ないし第３図はこの考案の第一実施例を示すもの
で、第１図は正面図、第２図はその側断面図、第３図は
この考案の円板の要部断面図、第４図はこの考案の第二
実施例を示す円板の要部断面図、第５図はこの考案の第
三実施例を示す正面図である。 図に釦いて、１ａ、１ｂ・・・・・薄片部材、１ａ′。 １ｂ’・・・・・・凹部、１ａ’＊１ｂ’・・・・・・
凸部、４・・・・・・同心通路、５・・・・・・拡張同
心通路、６・・・・・・直線状通路である。Figures 1 to 3 show the first embodiment of this invention, in which Figure 1 is a front view, Figure 2 is a side sectional view, and Figure 3 is a sectional view of essential parts of the disc of this invention. , FIG. 4 is a sectional view of a main part of a disk showing a second embodiment of this invention, and FIG. 5 is a front view showing a third embodiment of this invention. Click the buttons 1a, 1b... thin piece members, 1a' in the figure. 1b'...concavity, 1a'*1b'...
Convex portion, 4... Concentric passage, 5... Expanded concentric passage, 6... Linear passage.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 多数の同心通路と、この同心通路と交叉する放射状通路
とを具備して、回転軸に装着されるとともに、被処理用
の汚水中に部分的に浸漬されて、前記汚水を生物学的に
処理する汚水処理用回転円板に釦いて、多数の同心通路
を有する円板体の中心部寄りにしてかつ枢軸部分よりは
外側の位置に、他の同心通路と比較してかなり幅広の拡
張同心通路を特設するとともに、この拡張同心通路から
この通路のほぼ接線方向に向う複数の直線状の通路を設
け、これら直線状通路を前記円板本体の外周縁に開口さ
せて成る構造。It is equipped with a number of concentric passages and radial passages that intersect with the concentric passages, and is mounted on a rotating shaft and partially immersed in the wastewater to be treated to biologically treat the wastewater. A rotating disk for sewage treatment is equipped with an expanded concentric passageway that is considerably wider than the other concentric passageways, located near the center of the disk body that has a large number of concentric passageways, and outside of the pivot part. A structure in which a plurality of linear passages are provided extending from the expanded concentric passage in a substantially tangential direction to the expanded concentric passage, and these linear passages are opened at the outer peripheral edge of the disc main body.