JP2001314898A - Sludge dehydration treatment apparatus - Google Patents
Sludge dehydration treatment apparatusInfo
- Publication number
- JP2001314898A JP2001314898A JP2000140466A JP2000140466A JP2001314898A JP 2001314898 A JP2001314898 A JP 2001314898A JP 2000140466 A JP2000140466 A JP 2000140466A JP 2000140466 A JP2000140466 A JP 2000140466A JP 2001314898 A JP2001314898 A JP 2001314898A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- disk
- dehydration
- rotary
- disks
- 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.)
- Granted
Links
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- Treatment Of Sludge (AREA)
- Filtration Of Liquid (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、排水(廃水)処理
系等から発生する汚泥液の脱水濃縮技術に関し、詳細に
は、多数枚の円板が所定間隔を保って回転軸方向に配列
された回転濾過体が交接列をなして複数配列された脱水
処理室に供給されて来る汚泥液(原液)を、前記回転濾
過体の回転により濾過脱水しながら、汚泥液中の懸濁固
形物(以下「SS」という。)を濃縮・搬送し、脱水処
理室外へ脱水ケーキとして排出する濾体回転型(多重円
板型)の汚泥脱水処理装置の改良技術に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for dehydrating and condensing sludge generated from a wastewater (wastewater) treatment system or the like, and more particularly, to a method in which a large number of disks are arranged in a rotating shaft direction at predetermined intervals. The sludge liquid (stock solution) supplied to the dehydration treatment chambers in which a plurality of rotary filter bodies are arranged in an intersecting row is filtered and dewatered by the rotation of the rotary filter body, and the suspended solids in the sludge solution ( The present invention relates to an improved technology of a filter rotating type (multi-disc type) sludge dewatering apparatus for concentrating and transporting (hereinafter referred to as "SS") and discharging it as a dewatered cake outside the dewatering processing chamber.
【0002】[0002]
【従来の技術】活性汚泥法を利用した排水(廃水)処理
系等から発生する(分離)汚泥液は、最終的には、真空
脱水、遠心脱水、加圧脱水、ロール脱水(ベルトプレス
など)などの技術により物理的に脱水濃縮され、得られ
た脱水ケーキは、炭化処理等されて肥料等に再利用され
ている。2. Description of the Related Art Sludge liquid (separated) generated from a wastewater (wastewater) treatment system utilizing an activated sludge method is finally subjected to vacuum dehydration, centrifugal dehydration, pressure dehydration, and roll dehydration (belt press, etc.). The resulting dewatered cake is physically dehydrated and concentrated by such a technique as described above, and the resulting dehydrated cake is subjected to carbonization treatment or the like and reused as fertilizer or the like.
【0003】この汚泥液の脱水濃縮処理技術の一つとし
て、特開平10−137795号報等に開示された「濾
体回転型汚泥脱水処理装置」を利用した公知の方法があ
る。以下、この濾体回転型汚泥脱水処理装置の構成を簡
略に説明する。[0003] As one of the sludge liquid dehydration and concentration treatment techniques, there is a known method using a "filter rotating rotary sludge dehydration treatment apparatus" disclosed in Japanese Patent Application Laid-Open No. Hei 10-137795. Hereinafter, the configuration of the filter rotating rotary sludge dewatering apparatus will be briefly described.
【0004】まず、所定の厚み及び口径を有するリング
状の円板が、円板間に間隙をつくって、回転軸に多数枚
配列された略***状の「回転濾過体」を設けられる。こ
の「回転濾過体」が、処理対象の汚泥液が供給されて来
る脱水処理室内に、交接列をなして複数配設されてい
る。[0004] First, a ring-shaped disk having a predetermined thickness and diameter is provided with a gap between the disks, and a plurality of substantially rotating "rotary filter bodies" arranged on a rotating shaft are provided. A plurality of the "rotary filter bodies" are arranged in a mating line in a dehydration treatment chamber to which the sludge liquid to be treated is supplied.
【0005】より具体的には、隣接する回転濾過体は、
互いに、円板の外周縁の一部領域が、相手の円板間の間
隙に嵌入されている交接列をなして、噛み合っている。
この交接列が、前記脱水処理室内部に汚泥供給口から排
出口側に向かって徐々に間隔が狭まるように、上下2段
に配列されている。[0005] More specifically, the adjacent rotary filter is
Partial regions of the outer peripheral edge of the disc are meshed with each other in a mating row that is fitted in the gap between the mating discs.
The mating rows are arranged in the upper and lower stages in the dewatering chamber so that the interval gradually decreases from the sludge supply port toward the discharge port side.
【0006】そして、汚泥供給口から脱水処理室内に供
給されてきた汚泥液は、各回転濾過体を一斉に回転させ
ることによって、上下両交接列の間の領域を排出口側に
向かって移動する。[0006] The sludge liquid supplied from the sludge supply port into the dehydration treatment chamber moves toward the discharge port in the area between the upper and lower mating rows by simultaneously rotating the rotary filters. .
【0007】この移動の過程で、外周面同士が対向して
いる円板間に形成される隙間に流入する汚泥液は、圧縮
されて水分が濾し取られて(脱水されて)、次第に濃縮
される。そして、脱水処理室の後端部に設けられた排出
口から、濃縮された懸濁固形物(以下、「SS」とい
う。)成分からなる、含水率80%程度のいわゆる「脱
水ケーキ」が吐出される。In the course of this movement, the sludge flowing into the gap formed between the discs whose outer peripheral surfaces face each other is compressed, the water is filtered off (dewatered), and gradually concentrated. You. Then, a so-called “dehydrated cake” composed of concentrated suspended solids (hereinafter, referred to as “SS”) components having a water content of about 80% is discharged from an outlet provided at the rear end of the dehydration treatment chamber. Is done.
【0008】[0008]
【発明が解決しようとする課題】しかしながら、上記し
た従来の濾体回転型汚泥脱水処理装置では、回転濾過体
の回転作用によって濃縮SSを排出口側に搬送する作業
を行う場合において、次の技術的課題を有していた。However, in the above-mentioned conventional filter rotating rotary sludge dewatering apparatus, when the operation of transporting the concentrated SS to the discharge port by the rotating action of the rotary filter is performed, the following technology is required. Had a strategic problem.
【0009】脱水処理室の相対向する交接列面(複数の
回転濾過体が交接することによって得られる凸凹な面)
と、回転濾過体の回転軸が回転可能に軸支される(脱水
処理室の)左右側壁と、によって囲まれた領域(以下、
「搬送路」という。)では、回転する円板により汚泥液
から水分が濾し取られながら、SS成分が濃縮搬送され
ることになるが、この際、左右側壁近傍領域では、脱水
処理室の側壁面にSSが接触、付着等することによっ
て、SSが徐々に滞留しやすくなる。[0009] Opposite mating row surfaces of the dehydration treatment chamber (uneven surface obtained by interlocking a plurality of rotary filters)
And an area surrounded by left and right side walls (of a dehydration processing chamber) in which the rotation axis of the rotary filter is rotatably supported (hereinafter, referred to as “the dehydration chamber”).
It is called "transport path". In (2), while the SS component is condensed and conveyed while the water is filtered out from the sludge by the rotating disk, in this case, in the region near the left and right side walls, the SS comes into contact with the side wall surfaces of the dehydration chamber, By adhering or the like, the SS gradually tends to stay.
【0010】換言すれば、自搬送作用の無い左右側壁の
近傍領域を進行するSS成分の搬送速度が、左右側壁面
とは全く接触がなく、自搬送作用のある交接列面にのみ
接触する回転軸中央部領域のSSの搬送速度よりも小さ
くなる。In other words, the transport speed of the SS component traveling in the vicinity of the left and right side walls without the self-conveying action is such that the rotation speed is such that the SS component has no contact with the left and right side wall faces and only contacts the mating row surface having the self-conveying action. The transport speed is lower than the transport speed of SS in the central region of the shaft.
【0011】このように、回転軸の軸方向で搬送速度に
差異が生じると、場合によっては、上記搬送路を徐々に
濃縮されながら移動するSSに、排出口に連通するよう
な裂け目が生じ、その裂け目部分を、汚泥液(原液)が
脱水濃縮されることなく通過して、そのまま排出されて
しまうという事態が発生してしまう。As described above, if a difference occurs in the transport speed in the axial direction of the rotating shaft, in some cases, a rupture that communicates with the discharge port is generated in the SS moving while being gradually concentrated on the transport path, A situation occurs in which the sludge liquid (stock solution) passes through the crack without being dehydrated and concentrated, and is discharged as it is.
【0012】この事態を防止するために従来において
は、回転濾過体の回転速度(搬送速度)を全体に低下さ
せて、SSの搬送速度を回転軸方向に均等化するという
対策が講じられてきた。しかし、この対策法では、装置
全体の処理能力が低下してしまうという問題や搬送速度
の低下に伴う汚泥濃縮力の脆弱化などの問題があった。In order to prevent this situation, conventionally, measures have been taken to reduce the rotation speed (conveyance speed) of the rotary filter as a whole and to equalize the SS conveyance speed in the rotation axis direction. . However, this countermeasure method has a problem that the processing capacity of the entire apparatus is reduced, and a problem that the sludge concentrating power is weakened due to a reduced transport speed.
【0013】また、処理対象となる汚泥液が、固形物の
多い無機汚泥や油分を多量に含む高含油スカム等の場合
は、搬送過程で汚泥が固化しやすいから、搬送力の大き
い円板配列構成を回転軸方向のすべてに設けた構成で回
転濾過体の回転速度を上げ、処理能力を高めようとする
と、回転濾過体にかかる負荷が過剰となって、駆動系に
支障を来たすおそれがあった。即ち、従来の回転濾過体
の円板配列構成では、汚泥液の性状に応じた搬送力の調
整及び制御が難しかった。When the sludge liquid to be treated is an inorganic sludge containing a large amount of solid matter or a highly oil-containing scum containing a large amount of oil, the sludge is easily solidified in the conveying process, so that a disk array having a large conveying force is used. If the rotational speed of the rotary filter is increased by increasing the rotational speed of the rotary filter with the configuration provided in all directions in the rotation axis direction, the load on the rotary filter may become excessive, and the drive system may be hindered. Was. That is, it is difficult to adjust and control the conveying force according to the properties of the sludge liquid in the conventional disk arrangement of the rotary filter.
【0014】そこで、本発明の目的は、回転濾過体を構
成する円板の配列構成を工夫するという新規な着想によ
って、 (1)脱水処理室の搬送路における左右両側壁近傍領域
のSSの搬送力を、中央領域の搬送力に比して大きくで
きる。 (2)回転軸方向にSSの搬送量を均等化できる。 (3)固形物の多い無機汚泥や油分を多量に含む高含油
スカム等の脱水濃縮にも的確に対処できる。 等を達成できる「汚泥脱水処理装置」を提供することに
ある。Therefore, an object of the present invention is to provide a novel idea of devising an arrangement of disks constituting a rotary filter, and (1) transport of SS in the vicinity of the left and right side walls in the transport path of the dehydration chamber. The force can be increased compared to the transport force in the central area. (2) The SS transport amount can be equalized in the rotation axis direction. (3) It is possible to appropriately cope with dehydration and concentration of inorganic sludge having a large amount of solid matter and high oil-containing scum containing a large amount of oil. It is an object of the present invention to provide a "sludge dewatering treatment apparatus" capable of achieving the above-mentioned requirements.
【0015】[0015]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、濾体回転型の汚泥脱水処理装置におい
て、以下の手段を採用する。請求項1では、まず、多数
枚の円板を、回転軸方向に所定間隔を保って配列させた
構成の回転濾過体を、互いに交接列をなすように脱水処
理室内に複数配列し、この脱水処理室に供給される汚泥
液を前記回転濾過体の回転により濾過脱水しながら搬送
し、排出する構成とする。そして、前記円板の配列構成
だけを変える手段によって、前記回転軸を(回転可能
に)軸支する(前記脱水処理室の)左右側壁近傍領域の
汚泥搬送力を、前記回転軸の(軸方向の)中央領域の汚
泥搬送力よりも大きくなるように構成した。ここで、汚
泥の搬送力は、隣り合う回転濾過体の口径の異なる円板
が交接することによって形成される交接列面の多数箇所
にわたって形成されるポケット状の凹部へ入り込んでく
る汚泥を、(回転濾過体の)円板の回転によって、排出
口側に順次掻き出していく作用によって得られる。そこ
で、上記手段では、脱水処理室の左右両側壁近傍領域
(回転軸の両端領域)と回転軸の中央領域とで、回転濾
過体を構成している所定形状の円板の配列構成を変える
ことによって、左右両側壁近傍領域と回転軸の中央領域
とで、汚泥が入り込む凹部(又は搬送力の大きい円板
列)の密度(出現頻度)を変化させるようにした。この
簡易ば手段によって、脱水処理室に形成された搬送路に
おける、左右両側壁近傍領域のSSの搬送力は、回転軸
中央領域の搬送力に比して、確実に大きくなる。その結
果、側壁に対するSSの接触や付着等によって引き起こ
される左右両側壁近傍領域SSの搬送力を高めて、一定
以上の汚泥の搬送速度を確保する。一方、、回転軸中央
領域のSSの搬送速度が緩和されるので、無機汚泥や高
含油スカムなどの固化しやすい汚泥の搬送を、円滑に行
うことができるようになる。左右両側壁近傍の領域の搬
送速度と中央領域の搬送速度を合わせるために、回転濾
過体の回転速度を遅くするという従来の方法によらなく
ても、回転濾過体のもつ搬送特性に基づいて、回転軸方
向の搬送速度を均等化できる。即ち、本発明では、回転
濾過体に一般に汎用される複数種の円板を選択して、回
転軸に対する配列構成(並べ方)だけを変えるという簡
易な手段により、SSの搬送速度を調整又は制御するこ
とが可能となる。Means for Solving the Problems In order to achieve the above object, the present invention employs the following means in a filter rotating rotary sludge dewatering apparatus. According to the first aspect, first, a plurality of rotary filters having a configuration in which a large number of disks are arranged at predetermined intervals in the rotation axis direction are arranged in a dehydration processing chamber so as to form an intersecting row. The sludge liquid supplied to the processing chamber is conveyed and discharged while being filtered and dewatered by the rotation of the rotary filter. Then, by means for changing only the arrangement of the disks, the sludge conveying force in the region near the left and right side walls (of the dehydration processing chamber) supporting (rotatably) the rotating shaft is reduced by the axial direction of the rotating shaft. 1) It is configured to be larger than the sludge conveying force in the central area. Here, the conveying power of the sludge is such that the sludge entering the pocket-shaped recess formed over a number of locations on the mating row surface formed by intersecting disks of different diameters of the adjacent rotary filtration bodies, ( Rotation of the disc (of the rotary filter) results in a sequential scraping action to the outlet side. Therefore, in the above-described means, the arrangement of the discs having a predetermined shape constituting the rotary filter is changed between the region near the left and right side walls (both ends of the rotating shaft) and the central region of the rotating shaft. Thereby, the density (appearance frequency) of the concave portion (or the disk row having a large conveying force) into which the sludge enters is changed between the region near the left and right side walls and the central region of the rotating shaft. By this simple means, the carrying force of the SS in the region near the left and right side walls in the carrying path formed in the dehydration processing chamber is surely larger than the carrying force in the central region of the rotating shaft. As a result, the transporting force in the region SS near the right and left side walls caused by the contact or adhesion of the SS to the side wall is increased, and the transport speed of the sludge at or above a certain level is secured. On the other hand, since the transport speed of SS in the central region of the rotating shaft is reduced, it is possible to smoothly transport solidified sludge such as inorganic sludge and highly oil-containing scum. In order to match the transport speed in the area near the left and right side walls and the transport speed in the central area, without using the conventional method of slowing down the rotation speed of the rotary filter, based on the transport characteristics of the rotary filter, The transport speed in the rotation axis direction can be equalized. That is, in the present invention, the transport speed of the SS is adjusted or controlled by a simple means of selecting a plurality of types of disks generally used for the rotary filter and changing only the arrangement (how to arrange) with respect to the rotation axis. It becomes possible.
【0016】請求項2では、請求項1記載の左右側壁近
傍領域では、大口径の大円板と小口径の小円板を前記回
転軸に交互に挿着するとともに、同項記載の中央領域で
は、前記大円板と前記小円板の間に、大円板の口径より
も小さく小円板の口径よりも大きな口径の中円板を介装
させるようにする。この手段では、まず、口径の大きい
順番に、「大円板」、「中円板」、「小円板」の3種類
の円板を用意し、これらの円板の「配列構成」だけを変
化させることにより、SSの搬送速度を調整又は制御す
る。まず、SSが滞留しやすく、搬送速度が遅くなる傾
向にある前記左右側壁近傍領域では、大円板と小円板を
前記回転軸に交互に挿着するようにする。この配列構成
では、小円板は、大円板と大円板の間に隙間を形成する
ためのスペーサ部材として機能しており、各隙間部分に
対して、隣接する回転濾過体の大円板周縁の一部領域が
それぞれ嵌入し、回転濾過体は互いに交接列を形成する
ことになる。一方、側壁抵抗に影響されない回転軸中央
領域では、大円板と小円板の間に中円板を介装するよう
に配列構成し、この中円板に対しては、隣接する回転濾
過体の中円板が必ず対向するようにする。この中円板が
その外周面を対向させて並ぶ円板列部分は、凸凹の度合
いが小さく、加えて、回転軸の回転に伴う円板の周速度
が全く同じである。このため、凸凹の度合いが大きく、
周速度の異なる、大円板と小円板ががその外周面を対向
させて並ぶ円板列部分よりも、搬送力が極めて弱くな
る。従って、回転軸中央領域では、大円板と小円板によ
って形成される円板列の間に、中円板のみによって形成
される円板列部分を介在させることによって、汚泥搬送
力を緩和することができる。According to a second aspect of the present invention, in a region near the left and right side walls according to the first aspect, a large-diameter large disk and a small-diameter small disk are alternately inserted into the rotary shaft, and the central region described in the first aspect. In the above, a middle disk having a diameter smaller than the diameter of the large disk and larger than the diameter of the small disk is interposed between the large disk and the small disk. In this means, first, three types of disks, a "large disk", a "medium disk", and a "small disk", are prepared in the order of diameter, and only the "array configuration" of these disks is set. By changing it, the transport speed of the SS is adjusted or controlled. First, in the region near the left and right side walls where the SS tends to stay and the transport speed tends to be slow, large disks and small disks are alternately inserted on the rotating shaft. In this arrangement, the small disk functions as a spacer member for forming a gap between the large disk and the large disk. Partial areas are respectively fitted, and the rotary filters form an intersecting row with each other. On the other hand, in the central region of the rotating shaft which is not affected by the side wall resistance, a middle disk is arranged and arranged between the large disk and the small disk. Make sure the disks are facing each other. The disk row portion in which the middle disks are arranged with their outer peripheral surfaces facing each other has a small degree of unevenness, and additionally, the peripheral speed of the disks accompanying the rotation of the rotating shaft is exactly the same. For this reason, the degree of unevenness is large,
The conveying force is extremely weaker than that of a disc row portion in which a large disc and a small disc having different peripheral speeds are arranged with their outer peripheral surfaces facing each other. Therefore, in the central region of the rotating shaft, the sludge conveying force is reduced by interposing the disk row portion formed only by the middle disk between the disk rows formed by the large disk and the small disk. be able to.
【0017】以上説明したように、脱水処理室の左右側
壁の内壁面では、できるだけ汚泥を滞留させないように
することが望ましいから、少なくとも左右側壁の内壁面
部分は、従来採用されてきたステンレス製よりも、表面
平滑性に優れた材質を選択して形成することが望まし
い。例えば、基板に合成樹脂によって表面コートを施し
たような材質が考えられる。側壁抵抗を少なくする手段
と側壁近傍領域の搬送力を高める上記手段を併用するこ
とにより、側壁近傍領域における搬送速度の低下を相乗
的に防止することが可能となる。As described above, it is desirable to keep sludge from remaining on the inner wall surfaces of the left and right side walls of the dehydration treatment chamber as much as possible. Therefore, at least the inner wall surface portions of the left and right side walls are made of stainless steel which has been conventionally used. Also, it is desirable to select and form a material having excellent surface smoothness. For example, a material in which a surface is coated on a substrate with a synthetic resin is conceivable. By using both the means for reducing the side wall resistance and the above means for increasing the conveying force in the region near the side wall, it is possible to synergistically prevent a decrease in the conveying speed in the region near the side wall.
【0018】[0018]
【発明の実施の形態】以下、本発明に係る汚泥脱水処理
装置の好適な実施形態について、添付図面に基づき説明
する。 <汚泥脱水処理装置の全体構成>まず、本発明に係る汚
泥脱水処理装置の脱水処理室内部の構成を示す簡略図で
ある図1に基づいて、同装置1の全体構成を説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a sludge dewatering apparatus according to the present invention will be described below with reference to the accompanying drawings. <Overall Configuration of Sludge Dehydration Processing Apparatus> First, the overall configuration of the sludge dehydration processing apparatus 1 will be described with reference to FIG.
【0019】本発明に係る汚泥脱水処理装置1(以下、
「装置1」という。)は、四方を壁面で囲まれた、略箱
型の脱水処理室2を備える。この脱水処理室2の前方壁
面201には、所定の調質工程を経て移送されてくる汚
泥液(原液)5を脱水処理室2に供給(導入)するため
の汚泥供給口3が設けらている。相対する後方壁面20
2には、脱水濃縮された脱水ケーキ13を排出するため
の排出口4が設けられている。The sludge dewatering apparatus 1 (hereinafter, referred to as the sludge dewatering apparatus) according to the present invention
It is referred to as “device 1”. ) Includes a substantially box-shaped dehydration chamber 2 surrounded on all sides by walls. A sludge supply port 3 for supplying (introducing) a sludge liquid (raw liquid) 5 transferred through a predetermined refining process to the dehydration processing chamber 2 is provided on a front wall surface 201 of the dehydration processing chamber 2. I have. Opposite rear wall surface 20
2 is provided with an outlet 4 for discharging the dewatered cake 13 that has been dehydrated and concentrated.
【0020】この排出口4には、やや下方に傾斜するシ
ュート21が取り付けられており、このシュート21の
上方には、重錘板18の加重作用によって前記排出口4
を閉塞するように構成された抵抗板19が、軸17に、
上方側に付勢されて、回動可能に支持されている。この
抵抗板19は、脱水処理室2における汚泥の圧力(加圧
脱水)を調節する作用を発揮し、この圧力を大きくする
程、汚泥の脱水率を高めることができる。A chute 21 that is slightly downwardly inclined is attached to the discharge port 4. Above the chute 21, the discharge port 4 is acted upon by the weight of the weight plate 18.
A resistance plate 19 configured to close the
It is biased upward and rotatably supported. The resistance plate 19 exerts an effect of adjusting the pressure (dehydration under pressure) of the sludge in the dehydration processing chamber 2, and the dehydration rate of the sludge can be increased as the pressure is increased.
【0021】脱水処理室2内部には、処理室2の左右側
壁204,205方向に横架され、該左右側壁204,
205に軸端部が回転可能に軸支されている回転軸8,
8,8…が、大別すると、上下2段に配列されている。
これらの回転軸8は、図示しないモータの駆動により、
側壁204,205外壁領域に配設された歯車等を介
し、一斉に回転するようにされており、回転数を全体的
に調整又は制御できる構成とされている。図1の符号9
a,9bは、主に、後述する交接列7によって濾し取ら
れた水分15を排出するための、濾液取出口である。Inside the dehydration processing chamber 2, it is laid in the direction of the left and right side walls 204, 205 of the processing chamber 2,
A rotating shaft 8, the shaft end of which is rotatably supported by 205;
, Are roughly arranged in two upper and lower stages.
These rotating shafts 8 are driven by a motor (not shown).
The gears are simultaneously rotated via gears and the like disposed in the outer wall regions of the side walls 204 and 205, so that the number of rotations can be adjusted or controlled as a whole. Reference numeral 9 in FIG.
Reference numerals a and 9b denote filtrate outlets mainly for discharging the water 15 that has been filtered out by the exchange line 7 described later.
【0022】<回転濾過体の円板の配列構成>ここで、
脱水処理室2の下方側の回転軸8周辺を上方から見た部
分省略平面図である図2、回転軸8に挿着される円板の
配列構成図である図3に示すように、各回転軸8,8,
…には、口径を異にする3種のリング状の円板10,1
1,12が、所定の配列になるように挿着されている。<Arrangement of Disks in Rotary Filter>
As shown in FIG. 2, which is a partially omitted plan view of the periphery of the rotation shaft 8 on the lower side of the dehydration processing chamber 2 as viewed from above, and FIG. 3, which is an arrangement diagram of disks inserted into the rotation shaft 8, Rotating shafts 8, 8,
... are three kinds of ring-shaped disks 10, 1 having different diameters.
1, 12 are inserted so as to form a predetermined arrangement.
【0023】具体的に説明すると、例えば、予め大口径
(例、φ120mm、厚み1.2mm)の大円板10、
中口径(例、φ111.6mm、厚み1.2mm)の中
円板11、小口径(例、φ103mm、厚み1.5m
m)の小円板12を用意する。More specifically, for example, a large disk 10 having a large diameter (for example, φ120 mm, thickness 1.2 mm),
Medium disk 11 (eg, φ111.6 mm, thickness 1.2 mm), small diameter (eg, φ103 mm, thickness 1.5 m)
The small disk 12 of m) is prepared.
【0024】そして、脱水処理室2の左右側壁204,
205の近傍領域Wa、Wbには、図3(A)及び図6
に示すように、大円板10と小円板12を交互に所定長
配列する(「配列例1」とする)。Then, the left and right side walls 204,
3 (A) and FIG.
As shown in FIG. 5, large disks 10 and small disks 12 are alternately arranged in a predetermined length (referred to as “array example 1”).
【0025】一方、回転軸8の略中央領域C(近傍領域
Wa、Wbを除く領域)には、図3(B)及び図7に示
すように、大円板10→中円板11→小円板12→中円
板11→大円板10→中円板11→小円板12…の順に
回転軸8方向に配列する(「配列例2」とする)。On the other hand, as shown in FIG. 3 (B) and FIG. 7, the large disc 10 → the middle disc 11 → the small disc is located substantially in the central area C of the rotary shaft 8 (excluding the neighboring areas Wa and Wb). The disks 12 are arranged in the direction of the rotating shaft 8 in the order of the disk 12, the medium disk 11, the large disk 10, the medium disk 11, the small disk 12, and so on (referred to as "array example 2").
【0026】または、図8に示すように、小円板12→
中円板11→大円板10→小円板12→中円板11→大
円板10…の順に回転軸8方向に配列する(「配列例
3」とする)。更に、中央領域Cで、とくに採用可能な
配列例を挙げれば、中円板11が二枚重なる部分を設け
て、大円板10→中円板11→中円板11→小円板12
→大円板10→中円板11→中円板11→小円板12…
の順に回転軸8方向に配列することもできる(「配列例
4」、図示せず)。Alternatively, as shown in FIG.
Arranged in the direction of the rotating shaft 8 in the order of the middle disk 11 → the large disk 10 → the small disk 12 → the middle disk 11 → the large disk 10 (hereinafter, “arrangement example 3”). Furthermore, as an example of an arrangement that can be particularly adopted in the central region C, a portion where two middle disks 11 overlap is provided, and a large disk 10 → a middle disk 11 → a middle disk 11 → a small disk 12
→ Large disk 10 → Middle disk 11 → Middle disk 11 → Small disk 12 ...
May be arranged in the direction of the rotation axis 8 ("arrangement example 4", not shown).
【0027】従来、回転濾過体における円板の配列構成
は、回転軸8方向に一律同じ構成であったから、上記配
列例1のように、回転軸8の軸方向に対して、所定の円
板を使用し、円板の配列順序(並べ方)を変えた部分を
形成するという技術的思想は、全く新規なものである。Conventionally, the arrangement of the discs in the rotary filter is the same in the direction of the rotation axis 8. The technical idea of forming a portion in which the arrangement order (arrangement) of the discs is changed by using is completely new.
【0028】ここで、円板10,11,12の配列構成
は、上記配列例に限定されるものではなく、汚泥の搬送
力に強弱をつけることができる配列構成であれば、適宜
選択又は組み合わせ可能である。Here, the arrangement of the discs 10, 11, 12 is not limited to the above arrangement example, but may be appropriately selected or combined as long as the arrangement is such that the strength of the sludge can be increased. It is possible.
【0029】例えば、上記配列例1と配列例2を組み合
わせ、側壁近傍領域Wa,Wbでは、上記同様に大円板
10と小円板12を交互に所定長配列し、中央領域Cで
は、大円板10→中円板11→小円板12→中円板11
→大円板10→中円板11→小円板12…の順に回転軸
8方向に配列することもできる。For example, the arrangement examples 1 and 2 are combined, and the large disks 10 and the small disks 12 are alternately arranged in a predetermined length in the side wall vicinity areas Wa and Wb as described above. Disk 10 → Medium disk 11 → Small disk 12 → Medium disk 11
It is also possible to arrange in the direction of the rotating shaft 8 in order of → the large disk 10 → the middle disk 11 → the small disk 12.
【0030】また、上記配列例1と配列例2を組み合わ
せ、側壁近傍領域Wa,Wbでは、上記同様に大円板1
0と小円板12を交互に所定長配列し、中央領域Cで
は、小円板12→中円板11→大円板10→小円板12
→中円板11→大円…の順に回転軸8方向に配列するこ
ともできる。Further, the arrangement examples 1 and 2 are combined, and in the side wall vicinity regions Wa and Wb, the large disc 1
0 and small discs 12 are alternately arranged in a predetermined length, and in the central region C, the small disc 12 → the middle disc 11 → the large disc 10 → the small disc 12
It is also possible to arrange in the direction of the rotating shaft 8 in the order of → the middle disk 11 → the great circle.
【0031】このようにして、左右側壁204,205
の近傍領域Wa,Wbと回転軸8の略中央領域Cとで、
円板10,11,12の配列構成を変化させる構成とさ
れている回転軸8は、回転濾過体6a〜6e,7a〜7
jとしての役割を果たすようになる。Thus, the left and right side walls 204, 205
And the substantially central region C of the rotating shaft 8 in the vicinity regions Wa and Wb of
The rotating shaft 8 configured to change the arrangement of the disks 10, 11, and 12 is provided with rotary filters 6a to 6e and 7a to 7
Plays the role of j.
【0032】即ち、この回転濾過体6a〜6e,7a〜
7jは、互いに交接して対向する多数の円板10,1
1,12間に形成される隙間Y(図4参照)中に、汚泥
液5を毛細管作用及び圧力差によって入り込ませ、円板
10,11,12の回転作用によって水分15を濾し取
る作用を発揮する。濾し取られた水分15は、脱水処理
室2の底部203に設けられた濾液取出口9a,9bか
ら図示しない集水槽に排出されることになる(図1等参
照)。That is, the rotary filters 6a to 6e, 7a to
7j is a large number of discs 10, 1 which are in contact with each other and face each other.
The sludge liquid 5 enters the gap Y (see FIG. 4) formed between the discs 1 and 12 by a capillary action and a pressure difference, and exerts an action of filtering out the water 15 by a rotating action of the discs 10, 11, and 12. I do. The filtered water 15 is discharged from a filtrate outlet 9a, 9b provided at the bottom 203 of the dehydration chamber 2 to a water collecting tank (not shown) (see FIG. 1 and the like).
【0033】ここで、回転濾過体6a〜6eは、脱水処
理室2の上方領域に、排出口4側に向けて次第に上方側
へ傾斜する交接列6をなすように配列されている。一
方、回転濾過体7a〜7jは、脱水処理室2の下方領域
に、交接列7をなして配列されている。Here, the rotary filter bodies 6a to 6e are arranged in the upper region of the dehydration treatment chamber 2 so as to form an intersecting row 6 which is gradually inclined upward toward the discharge port 4 side. On the other hand, the rotary filtration bodies 7 a to 7 j are arranged in a lower row of the dehydration treatment chamber 2 in a replacement row 7.
【0034】回転濾過体6a〜6eの略下方に配置され
る回転濾過体7f〜7j部分は、交接列6(回転濾過体
6a〜6e)よりやや急勾配で傾斜して排出口4側に向
け配列されている。この構成により、回転濾過体6a〜
6eと回転濾過体7f〜7jで挟まれた搬送路20は、
排出口4に近づくにつれて次第に間隔が狭まるように形
成されている。The rotary filter bodies 7f to 7j disposed substantially below the rotary filter bodies 6a to 6e are inclined slightly more steeply than the mating rows 6 (rotary filter bodies 6a to 6e) toward the discharge port 4 side. Are arranged. With this configuration, the rotary filter bodies 6a to 6a to
6e and the transport path 20 sandwiched between the rotary filter bodies 7f to 7j are:
The gap is gradually narrowed as approaching the discharge port 4.
【0035】回転濾過体6a〜6e,7a〜7jの回転
によって、圧縮脱水され、徐々に水分を失いながら強制
的に搬送されていく汚泥を、更に、搬送路20前方のよ
り狭い領域に押し込めていくことによって、汚泥の濃縮
を更に効果的に促進せしめている。The sludge that has been compressed and dewatered by the rotation of the rotary filters 6a to 6e and 7a to 7j and is forcibly conveyed while gradually losing water is further pushed into a narrower area in front of the conveying path 20. By doing so, the concentration of sludge is promoted more effectively.
【0036】ここで図4は、側壁近傍領域Wの搬送路2
0の一部を上下方向に切り落とし、真横から見た図で、
主に汚泥Sの移動及び脱水濃縮状態を簡略に表してい
る。この図4に示すように、汚泥Sは、徐々に狭まる搬
送路20を、回転濾過体6b,6c,6d及び回転濾過
体7g,7h,7iの回転作用により移動するととも
に、汚泥Sからは水分15が濾し取られ,円板10,1
1,12のそれぞれの隙間から、落下する。Here, FIG. 4 shows the transport path 2 in the region W near the side wall.
0 is cut off vertically and viewed from the side,
It mainly shows the movement of the sludge S and the state of dehydration and concentration in a simplified manner. As shown in FIG. 4, the sludge S moves along the gradually narrowing conveyance path 20 by the rotating action of the rotary filters 6 b, 6 c, 6 d and the rotary filters 7 g, 7 h, 7 i, and water from the sludge S is removed from the sludge S. 15 is filtered off and discs 10, 1
It falls from each gap of 1 and 12.
【0037】<交接列の構成>ここで、交接列6,7の
構成を、主に図5〜図9に基づいて詳しく説明する。ま
ず、交接列6の回転濾過体6aと6bの交接部分を一部
省略して示す拡大図である図5に示されているように、
回転濾過体6aの回転軸8の周方向に突出するように多
数枚配列された各円板の間に形成される間隙T(図2参
照)に、隣接する回転濾過体6bの円板周縁の一部領域
が嵌入することによって、円板同士が噛み合っている。<Structure of the replacement rows> Here, the configuration of the replacement rows 6 and 7 will be described in detail mainly with reference to FIGS. First, as shown in FIG. 5 which is an enlarged view showing a part of the contact portion between the rotary filter bodies 6a and 6b of the contact row 6 partially omitted,
A part of the periphery of the disk of the adjacent rotary filter 6b is provided in a gap T (see FIG. 2) formed between the disks arranged in a large number so as to protrude in the circumferential direction of the rotary shaft 8 of the rotary filter 6a. The disks are in mesh with each other by the fitting of the regions.
【0038】具体的には、隣接する回転濾過体6a〜6
e,7a〜7jの一方側の大円板10は、他方側の小円
板12と対向し、一方の中円板11は、他方の中円板1
1と対向するという規則性をもって、噛み合っている。Specifically, the adjacent rotary filter bodies 6a to 6
e, the large disk 10 on one side of 7a to 7j is opposed to the small disk 12 on the other side, and one middle disk 11 is
It meshes with the regularity of facing 1.
【0039】ここで、図6は、側壁近傍領域Wa(又は
Wb)の交接列状態(配列例1)を表す外観斜視図(円
板の厚みと口径差は理解を容易にするため強調してい
る)である。図7、図8は、回転軸8の中央領域Cの交
接列状態を表す外観斜視図(円板の厚みと口径差は理解
を容易にするため強調している)である。尚、図7、図
8は、上記配列例2、配列例3に対応するものである。FIG. 6 is a perspective view showing the appearance (arrangement example 1) of the mating row state of the side wall vicinity region Wa (or Wb) (the thickness of the disk and the diameter difference are emphasized for easy understanding). Is). FIGS. 7 and 8 are external perspective views showing the state of intersecting rows of the central region C of the rotating shaft 8 (the thickness of the disc and the difference in diameter are emphasized for easy understanding). 7 and 8 correspond to Arrangement Example 2 and Arrangement Example 3 described above.
【0040】まず、図6に示されているように、側壁近
傍領域Wa(又はWb)の交接列では、回転軸8と直行
する方向に、大円板10→小円板12→大円板→小円板
12…の円板列L1が、隣接して密に並列される。First, as shown in FIG. 6, in the intersecting row of the region Wa (or Wb) near the side wall, the large disk 10 → the small disk 12 → the large disk in the direction perpendicular to the rotation shaft 8. → small disc 12 ... disc row L 1 of, in parallel closely adjacent.
【0041】ここで、この円板列L1を一列だけ取り出
して、横方向から見た図である図9(A)に示されてい
るように、円板列L1は、対向する円板10,12の口
径差が大きいことに起因して、汚泥Sが入り込む大きな
ポケット領域Xが形成され、凸凹度合いが大きくなる。
このため、汚泥Sに対する食い込みが大きい。Here, as shown in FIG. 9 (A), which is a view of the disk row L 1 taken out only one row and viewed from the lateral direction, the disk row L 1 Due to the large diameter difference between 10 and 12, a large pocket area X into which the sludge S enters is formed, and the degree of unevenness increases.
For this reason, the penetration into the sludge S is large.
【0042】加えて、小円板12の周速度vと大円板1
0の周速度Vに差異が生じるため、ポケットXに送り込
まれた汚泥Sを、次のポケット領域Xにかき出して送り
込む作用が効果的に発揮されるので、汚泥の搬送力(搬
送速度)P1が大きい。In addition, the peripheral speed v of the small disk 12 and the large disk 1
Since a difference occurs in the peripheral speed V of 0, the action of scraping the sludge S sent into the pocket X into the next pocket area X and effectively sending the sludge S is exerted effectively, so that the sludge conveying force (transport speed) P 1. Is big.
【0043】一方、上記配列例2〜4等を備える中央領
域Cにおける円板の交接列領域には、上記円板列L1の
間に、回転軸8と直行する方向に、中円板11→中円板
11→中円板11…の円板列L2が所定の頻度で介在す
ることになる(図6、図7参照)。On the other hand, the mating line region of the disc in the central region C having the sequence Examples 2-4, etc., between the disc rows L 1, in the direction perpendicular to the rotation axis 8, the middle disk 11 → middle disk 11 → middle disc 11 ... disc column L 2 of is the intervention at a predetermined frequency (see FIGS. 6 and 7).
【0044】この円板列L2一列だけ取り出して横方向
から見た図である図9(B)に示されているように、円
板列L2は、同一口径の中円板11だけで形成されてい
るから、対向する大円板10と小円板12によって形成
される円板列L1の如き、大きなポケット領域X(図9
(A)参照)が形成されない。As shown in FIG. 9 (B), which is a view of one disk row L 2 taken out and viewed from the lateral direction, the disk row L 2 has only the middle disk 11 of the same diameter. from being formed, such as a disc column L 1 that is formed by the large disc 10 a small circular plate 12 facing, large pocket area X (FIG. 9
(A)) is not formed.
【0045】このため、円板列L2は、円板列L1と比較
して凸凹度合いが小さく、汚泥に対する食い込みも少な
い。加えて、隣り合う中円板11の周速度V’は同じで
あるため、汚泥Sの搬送力(搬送速度)P2が小さい
(P2<P1)。For this reason, the disc row L 2 has a smaller degree of unevenness than the disc row L 1 and has less bite into sludge. In addition, since the circumferential speed of the disc 11 in the adjacent V 'are the same, the conveying force of the sludge S (conveying speed) P 2 is less (P 2 <P 1).
【0046】従って、搬送力P1の大きい円板列L1を、
回転軸8方向に密に形成すればする程、側壁近傍領域W
a(又はWb)の交接列領域における汚泥Sの搬送力を
効果的に高めることができる。一方、搬送力P2が小さ
い円板列L2を、回転軸8方向に介在させればさせる
程、搬送力は小さくなる。Therefore, the disk row L 1 having a large conveying force P 1 is
The more closely formed in the direction of the rotation axis 8, the more the region W near the side wall
The conveying force of the sludge S in the contact row area of a (or Wb) can be effectively increased. On the other hand, the conveying force P 2 is smaller disc column L 2, extent to be caused to intervene rotation axis 8 direction, the conveying force decreases.
【0047】例えば、図7に示す「配列例2」では、回
転軸8の軸方向で見たときに、円板列L1と円板列L2が
交互に並んでいるが、図8に示す「配列例3」では、3
列に対して1列の頻度で、円板列L2が形成される。従
って、配列例2よりも配列例3の方が、搬送力の大きい
円板列L1の出現頻度が多いので、汚泥搬送力Pが大き
くなる。[0047] For example, the "sequence Example 2" shown in FIG. 7, when viewed in the axial direction of the rotary shaft 8, but the disc rows L 1 and disc columns L 2 are alternately arranged, in FIG. 8 In "arrangement example 3" shown, 3
At a frequency of one column for the column, disc column L 2 is formed. Thus, towards the arrangement example 3 than the arrangement example 2, since the occurrence frequency of large disc column L 1 of the conveying force is large, the sludge conveying force P increases.
【0048】これにより、汚泥液(原液)5の固形分等
の性状に応じて、配列構成の異なる回転濾過体を使い分
けて、搬送力(搬送速度)Pを調整又は制御するように
すれば、その汚泥液5に適した脱水濃縮を確実に実施す
ることができる。[0048] Thus, if the rotary filter having a different arrangement configuration is selectively used according to the properties of the solid content of the sludge liquid (stock solution) 5 and the like, and the transport force (transport speed) P is adjusted or controlled, Dehydration and concentration suitable for the sludge solution 5 can be reliably performed.
【0049】<実験例>本願発明者らは、横幅500m
mの脱水処理室2を用いて、側壁近傍領域Wa,Wbで
は上記配列例1(図6参照)を側壁204,205から
長さ25〜60mm設け、残りの中央領域Cにおいては
上記配列例2(図3参照)を採用した配列構成のもの
(「実験例1」)と、回転軸8方向のすべてを上記配列
例1で統一した配列構成のもの(「比較実験例2」)を
使用して、高含油スカムを同一の回転条件下で脱水を試
みた。なお、使用した高含油スカムの固形分は、7.3
%、油分は、6.5%であった。<Experimental Example> The inventors of the present invention have a width of 500 m.
m, the arrangement example 1 (see FIG. 6) is provided in the side wall vicinity regions Wa and Wb by 25 to 60 mm in length from the side walls 204 and 205, and the arrangement example 2 is provided in the remaining central region C. (See FIG. 3) and an array configuration (“Experimental example 1”) and an array configuration in which all directions in the rotation axis 8 are unified in the array example 1 (“Comparative experimental example 2”) are used. Thus, dehydration of high oil content scum was attempted under the same rotation conditions. The solid content of the high oil content scum used was 7.3.
% And oil content were 6.5%.
【0050】その結果、実験例1では、処理量が50〜
150Kg・DS/m・hrを得るとともに、脱水ケー
キ13の含水率は75〜80%であった。一方、比較実
験例2では、処理量が50〜100Kg・DS/m・h
rを得るとともに、脱水ケーキ13の含水率は78〜8
2%であった。このことから、本願発明に係る上記脱水
処理装置1は、処理量の上限が高く、脱水ケーキ13の
含水率を、約3%低く抑えることができることがわかっ
た。As a result, in Experimental Example 1, the processing amount was 50 to
While 150 kg DS / mhr was obtained, the water content of the dehydrated cake 13 was 75 to 80%. On the other hand, in Comparative Experimental Example 2, the processing amount was 50 to 100 kg · DS / m · h.
r, and the water content of the dehydrated cake 13 is 78 to 8
2%. From this, it was found that the dewatering treatment apparatus 1 according to the present invention has a high upper limit of the treatment amount and can suppress the water content of the dewatered cake 13 by about 3%.
【0051】[0051]
【発明の効果】本発明に係る汚泥脱水処理装置によれ
ば、まず、回転濾過体を構成する円板の配列構成を、側
壁近傍領域と中央領域とで変えるという簡易な手段によ
って、脱水処理室の搬送路の左右両側壁近傍領域におけ
る汚泥の搬送力を、中央領域の搬送力に比して大きくす
ることができる。これにより、回転軸の回転速度を大き
く調整しなくても、回転軸方向の汚泥の搬送量を均等化
できるので、装置として扱いやすい。また、回転軸方向
の搬送速度がことなると発生する裂け目を汚泥に生じさ
せないので、脱水濃縮されない汚泥液(原液)がそのま
ま排出されることはない。また、固形物の多い無機汚泥
等の脱水濃縮にあった搬送力の回転濾過体を、円板の配
列構成を種々変えることによって提供できるので、運転
中において回転濾過体に過剰な負荷をかけてしまうよう
なこともない。更には、処理量の上限を高くするととも
に、得られる脱水ケーキの含水率を低く抑えることがで
きる。以上のように、本発明に係る汚泥脱水処理装置
は、排水処理系などから発生する汚泥の最終処理工程で
ある脱水濃縮処理を、円滑に行うことができる。According to the sludge dewatering apparatus of the present invention, first, the arrangement of the disks constituting the rotary filter is changed between the region near the side wall and the central region by a simple means. The conveying force of the sludge in the region near the left and right side walls of the conveying path can be made larger than the conveying force in the central region. This makes it possible to equalize the amount of sludge conveyed in the direction of the rotating shaft without having to largely adjust the rotating speed of the rotating shaft. In addition, since the sludge that is generated when the conveying speed in the rotation axis direction is different is not generated in the sludge, the sludge liquid (raw liquid) that is not dewatered and concentrated is not discharged as it is. In addition, since a rotary filter having a conveying force suitable for dehydration and concentration of inorganic sludge having a large amount of solids can be provided by variously changing the arrangement of the disks, an excessive load is applied to the rotary filter during operation. There is no such thing. Further, the upper limit of the treatment amount can be increased, and the water content of the obtained dehydrated cake can be suppressed low. As described above, the sludge dewatering treatment apparatus according to the present invention can smoothly perform the dewatering and concentration treatment, which is the final treatment step of sludge generated from a wastewater treatment system or the like.
【図1】本発明に係る汚泥脱水処理装置の脱水処理室内
部の構成を示す簡略図FIG. 1 is a simplified diagram showing the configuration of the inside of a dehydration treatment chamber of a sludge dehydration treatment device according to the present invention.
【図2】同脱水処理室の下方側の回転濾過体周辺を上方
から見た部分省略平面図FIG. 2 is a partially omitted plan view of the periphery of the rotary filter on the lower side of the dehydration processing chamber as viewed from above.
【図3】(A)回転軸に挿着される円板の配列構成図
(配列例1に対応)(B)同配列構成図(配列例2に対
応)FIG. 3A is a diagram showing an arrangement of disks inserted into a rotating shaft (corresponding to arrangement example 1), and FIG. 3B is a diagram showing an arrangement of the disks (corresponding to arrangement example 2).
【図4】側壁近傍領域の搬送路の一部を上下方向に切り
落として真横から見た図FIG. 4 is a view of a part of the transport path in the vicinity of the side wall, which is cut off vertically and viewed from the side.
【図5】隣接する回転濾過体の交接部分を一部省略して
示す拡大図FIG. 5 is an enlarged view showing a part of the contact portion of an adjacent rotary filter body partially omitted;
【図6】側壁近傍領域の交接列状態(配列例1)を表す
外観斜視図FIG. 6 is an external perspective view showing a state of a mating row (arrangement example 1) in a region near a side wall.
【図7】回転軸の中央領域の交接列状態(配列例2)を
表す外観斜視図FIG. 7 is an external perspective view showing an intersecting row state (arrangement example 2) of a central area of the rotation shaft.
【図8】回転軸の中央領域の交接列状態(配列例3)を
表す外観斜視図FIG. 8 is an external perspective view showing an intersecting row state (arrangement example 3) of a central area of the rotation shaft.
【図9】(A)円板列L1を一列だけ取り出して、横方
向から見た図 (B)円板列L1を一列だけ取り出して、横方向から見
た図9 (A) is disc column L 1 is taken out by a row, as viewed from the lateral direction (B) disc column L 1 and is taken out only one row, as viewed from the side Figure
1 脱水処理装置 2 脱水処理室 5 汚泥液 6a〜6e (上段)回転濾過体 7a〜7j (下段)回転濾過体 8 回転軸 10 大円板 11 中円板 12 小円板 C 回転軸の中央領域 S 汚泥 Wa,Wb 左右側壁近傍領域 DESCRIPTION OF SYMBOLS 1 Dehydration processing apparatus 2 Dehydration processing chamber 5 Sludge liquid 6a-6e (Upper stage) Rotary filter body 7a-7j (Lower stage) Rotary filter unit 8 Rotary shaft 10 Large disk 11 Medium disk 12 Small disk C Central area of rotary shaft S Sludge Wa, Wb Area near left and right side walls
Claims (2)
方向に配列された回転濾過体が、交接列をなすように脱
水処理室内に複数配列され、前記脱水処理室に供給され
る汚泥液を前記回転濾過体の回転により濾過脱水しなが
ら搬送し、排出する構成であって、 前記円板の配列構成を変える手段によって、前記脱水処
理室の前記回転軸を軸支する左右側壁近傍領域の汚泥搬
送力を、前記回転軸の中央領域の汚泥搬送力よりも大き
くなるように構成したことを特徴とする汚泥脱水処理装
置。1. A plurality of rotary filters in which a number of disks are arranged at predetermined intervals in a rotation axis direction are arranged in a dehydration chamber so as to form an intersecting row, and are supplied to the dehydration chamber. The sludge liquid is conveyed while being filtered and dewatered by the rotation of the rotary filter body, and is discharged. The means for changing the arrangement of the disks is provided in the vicinity of the left and right side walls that support the rotating shaft of the dehydration processing chamber. A sludge dewatering apparatus characterized in that the sludge conveying force in the region is made larger than the sludge conveying force in the central region of the rotating shaft.
円板と小口径の小円板が前記回転軸に対して交互に装着
された配列構成であって、 前記中央領域では、大円板の口径よりも小さく小円板の
口径よりも大きな口径の中円板を、前記大円板と前記小
円板の間に介装させた配列構成を備えることを特徴とす
る請求項1記載の汚泥脱水処理装置。2. In the vicinity of the left and right side walls, a large-diameter large disk and a small-diameter small disk are arranged alternately with respect to the rotary shaft. The sludge according to claim 1, further comprising an arrangement in which a middle disk having a diameter smaller than the diameter of the plate and larger than the diameter of the small disk is interposed between the large disk and the small disk. Dehydration processing equipment.
Priority Applications (1)
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JP2000140466A JP4547772B2 (en) | 2000-05-12 | 2000-05-12 | Sludge dewatering equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2000140466A JP4547772B2 (en) | 2000-05-12 | 2000-05-12 | Sludge dewatering equipment |
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JP2001314898A true JP2001314898A (en) | 2001-11-13 |
JP4547772B2 JP4547772B2 (en) | 2010-09-22 |
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ID=18647752
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JP2000140466A Expired - Fee Related JP4547772B2 (en) | 2000-05-12 | 2000-05-12 | Sludge dewatering equipment |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005007327A (en) * | 2003-06-20 | 2005-01-13 | Ishikawajima Harima Heavy Ind Co Ltd | Dehydrating tank |
JP2007289839A (en) * | 2006-04-24 | 2007-11-08 | Ihi Corp | Multi-disc dehydrator |
US7528994B2 (en) | 2003-06-13 | 2009-05-05 | Ricoh Company, Limited | Apparatus and method for preparing printing data, computer product, and prescription preparation apparatus |
WO2010001948A1 (en) * | 2008-07-04 | 2010-01-07 | 日本インカ株式会社 | Dewatering device |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53141979A (en) * | 1977-05-17 | 1978-12-11 | Kurita Water Ind Ltd | Sludge treatmet apparatus |
JPS5428068A (en) * | 1977-08-04 | 1979-03-02 | Kurita Water Ind Ltd | Apparatus for treating sludge-like material |
JPS5876112A (en) * | 1981-11-01 | 1983-05-09 | Goro Sasaki | Filter apparatus having means for preventing hardening of filter cake |
JPS59102413A (en) * | 1982-12-03 | 1984-06-13 | Saburo Ebina | Filtering device |
JPS60108400U (en) * | 1983-12-28 | 1985-07-23 | 株式会社 西原環境衛生研究所 | Sludge dewatering equipment |
JPS63296809A (en) * | 1987-05-29 | 1988-12-02 | Heriosu:Kk | Sludge treatment filter |
JPH0231807A (en) * | 1988-07-21 | 1990-02-01 | Teera Bunri:Kk | Continuous filtration apparatus having preventing function for caking of cake in gap hole among rotary filter member |
JPH05277309A (en) * | 1991-06-07 | 1993-10-26 | Maezawa Ind Inc | Dehydrator |
JPH10137796A (en) * | 1996-11-12 | 1998-05-26 | Kurita Water Ind Ltd | Filter body rotating type dehydrator |
-
2000
- 2000-05-12 JP JP2000140466A patent/JP4547772B2/en not_active Expired - Fee Related
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53141979A (en) * | 1977-05-17 | 1978-12-11 | Kurita Water Ind Ltd | Sludge treatmet apparatus |
JPS5428068A (en) * | 1977-08-04 | 1979-03-02 | Kurita Water Ind Ltd | Apparatus for treating sludge-like material |
JPS5876112A (en) * | 1981-11-01 | 1983-05-09 | Goro Sasaki | Filter apparatus having means for preventing hardening of filter cake |
JPS59102413A (en) * | 1982-12-03 | 1984-06-13 | Saburo Ebina | Filtering device |
JPS60108400U (en) * | 1983-12-28 | 1985-07-23 | 株式会社 西原環境衛生研究所 | Sludge dewatering equipment |
JPS63296809A (en) * | 1987-05-29 | 1988-12-02 | Heriosu:Kk | Sludge treatment filter |
JPH0231807A (en) * | 1988-07-21 | 1990-02-01 | Teera Bunri:Kk | Continuous filtration apparatus having preventing function for caking of cake in gap hole among rotary filter member |
JPH05277309A (en) * | 1991-06-07 | 1993-10-26 | Maezawa Ind Inc | Dehydrator |
JPH10137796A (en) * | 1996-11-12 | 1998-05-26 | Kurita Water Ind Ltd | Filter body rotating type dehydrator |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7528994B2 (en) | 2003-06-13 | 2009-05-05 | Ricoh Company, Limited | Apparatus and method for preparing printing data, computer product, and prescription preparation apparatus |
JP2005007327A (en) * | 2003-06-20 | 2005-01-13 | Ishikawajima Harima Heavy Ind Co Ltd | Dehydrating tank |
JP4525005B2 (en) * | 2003-06-20 | 2010-08-18 | 株式会社Ihi | Dehydration tank |
JP2007289839A (en) * | 2006-04-24 | 2007-11-08 | Ihi Corp | Multi-disc dehydrator |
JP4600343B2 (en) * | 2006-04-24 | 2010-12-15 | 株式会社Ihi | Multiple disk dehydrator |
WO2010001948A1 (en) * | 2008-07-04 | 2010-01-07 | 日本インカ株式会社 | Dewatering device |
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