JP2006334449A - Scum skimmer - Google Patents
Scum skimmer Download PDFInfo
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- JP2006334449A JP2006334449A JP2005158305A JP2005158305A JP2006334449A JP 2006334449 A JP2006334449 A JP 2006334449A JP 2005158305 A JP2005158305 A JP 2005158305A JP 2005158305 A JP2005158305 A JP 2005158305A JP 2006334449 A JP2006334449 A JP 2006334449A
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- agitator
- suction cover
- guide rail
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- rudder
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Abstract
Description
本発明は、汚水処理水槽、例えばオキシデーションディッチ槽内における水面に発生する発泡スカムを水中攪拌機を用いて除去する装置に関するものである。 The present invention relates to an apparatus for removing foam scum generated on a water surface in a sewage treatment water tank, for example, an oxidation ditch tank, using an underwater stirrer.
オキシデーションディッチ(以下ODという。)処理槽内の水面に浮遊発生するスカムを収集・除去するため、該OD槽内に設置される曝気機又は攪拌機の上流側の外側壁より下流側の該曝気機又は攪拌機に向けて水面上にオイルフェンス状のスカム収集ガイドを逆三角状に配置することで、上流から表面流に乗って浮遊移動してくるスカムを当該曝気機又は攪拌機の吸込口に誘導吸引させる事で、当該スカムを水中に巻き込ませ水中内の活性汚泥に接触吸着させ一体とすることで水中に完全に取り込ますことで水面に浮遊するスカムを除去する方法が用いらている(例えば、特許文献1参照)。 Oxidation ditch (hereinafter referred to as OD) The aeration downstream of the outer wall on the upstream side of the aerator or stirrer installed in the OD tank in order to collect and remove scum that floats on the water surface in the treatment tank By placing an oil fence-like scum collection guide on the water surface in an inverted triangular shape toward the agitator or stirrer, the scum floating on the surface flow from the upstream is guided to the suction port of the aerator or agitator A method of removing scum that floats on the surface of the water by sucking it into the water, bringing it into contact with the activated sludge in the water and bringing it into contact with the activated sludge so that it is completely taken into the water is used (for example, , See Patent Document 1).
しかし、このような方法では、表面水路巾を下流に向って縮小遮蔽することでスカム収集ガイドの誘導効果を得ており、当然の事ながらスカム収集ガイドの無い場合と比べて表面流速が低下するので、付着性の高いスカムは前述の上流側の外側壁及び誘導距離が長く曝気機又は攪拌機の吸込口より離れた位置のスカム収集ガイド誘導側面等にスカムが付着する事を完全に防止することが出来無いばかりでなく、スカム収集ガイドの背面の外側壁周辺部分の表面流は当該スカム収集ガイドにより遮られて流れの無い死水領域が形成され、該死水領域の水面上には折角除去したスカムが再び発生・付着すると共に、水処理効率の低下を誘発するという問題を有している。 However, in such a method, the guiding effect of the scum collection guide is obtained by reducing and shielding the surface channel width toward the downstream, and naturally the surface flow velocity is reduced compared to the case without the scum collection guide. Therefore, the highly adherent scum completely prevents the scum from adhering to the above-mentioned upstream outer wall and the scum collection guide guiding side surface, etc., where the induction distance is long and away from the suction port of the aerator or the agitator. In addition, the surface flow around the outer wall of the back surface of the scum collection guide is blocked by the scum collection guide to form a dead water region where no flow occurs, and the scum is removed on the water surface of the dead water region. Are generated and adhered again, and the water treatment efficiency is reduced.
解決しようとする課題は、処理槽内の表面流速を低下することなく、浮遊するスカムを効率良く収集・除去すると共に死水領域が形成されることなく水処理効率の低下を誘発しないスカム除去装置を提供することである。 The problem to be solved is a scum removing device that efficiently collects and removes floating scum without reducing the surface flow velocity in the treatment tank and does not induce a reduction in water treatment efficiency without forming a dead water region. Is to provide.
本発明では、汚水処理槽内の水路気中部に左右送行用のガイドレールを付設し、該ガイドレールの下方に左右送行可能に水中攪拌機の外周を覆う吸込みカバーに設けられたガイドにより該水中攪拌機をガイドレールに係合し、前記吸込みカバーの上流側始端上縁部を切欠き上流側に向って末広状に吸込口を形成し、更に、前記吸込みカバーの外周には水中攪拌機を浮かすためのフロートを設け、前記ガイドに付設される繋留具により水中攪拌機が繋留させるよう構成したことを最も主要な特徴とする。 In the present invention, a guide rail for left and right sending is attached to the middle part of the water channel in the sewage treatment tank, and the underwater stirrer is provided by a guide provided on a suction cover that covers the outer periphery of the underwater stirrer so as to be able to send left and right below the guide rail. Is engaged with the guide rail, the upper edge of the upstream end of the suction cover is cut out, a suction port is formed in a divergent shape toward the upstream side, and an underwater agitator is floated on the outer periphery of the suction cover. The main feature is that a float is provided and the underwater agitator is anchored by a anchor attached to the guide.
本発明によれば、スカム除去に移送水量の多いプロペラ式の水中攪拌機を用いて、吸込口の上縁部を切欠き状に開口しているため水中攪拌機による吸引作用と表層流の越流作用とが相俟って浮遊スカムを勢いよく大量に吸引・破砕・攪拌排水することができるので効率の良いスカム除去ができ、更に、左右送行用のガイドレールの下方に左右送行可能に水中攪拌機が係合されているので、スカム発生の多いポイントに水中攪拌機を容易に移動設置できるので、効率良くスカムを収集除去することができる。また、吐出口より吐出される攪拌流により吐出口の終端に付設された舵板および左右送行の切換え機構により水中攪拌機が左右方向に自走されるので、別途送行駆動源および同駆動装置を必要としないため構造が簡単でイニシャルおよびランニングコストを低く押させることができるとともに、煩わしい人為作業によるスカム除去装置の移動設定を行う必要がないという利点を有している。更に、左右方向の推力を得るため攪拌流を舵板面に当てることにより、攪拌流内に含まれる汚泥は広範囲に飛散攪拌されるので槽内汚泥濃度がより一層均一化されるという副次的効果も有している。 According to the present invention, a propeller-type underwater stirrer with a large amount of transferred water is used for scum removal, and the upper edge of the suction port is opened in a notch shape. Combined with the above, a large amount of floating scum can be sucked, crushed and agitated and drained efficiently, so efficient scum removal can be achieved, and an underwater agitator can be moved left and right below the left and right guide rails. Since they are engaged, the underwater agitator can be easily moved and installed at a point where scum is frequently generated, so that scum can be collected and removed efficiently. Also, since the underwater agitator is self-propelled in the left-right direction by the rudder plate attached to the end of the discharge port by the stirring flow discharged from the discharge port and the left-right feed switching mechanism, a separate drive drive source and drive device are required Therefore, there is an advantage that the structure is simple and the initial and running costs can be lowered, and the movement setting of the scum removing device by the troublesome manual work is not required. Further, by applying a stirring flow to the rudder plate surface in order to obtain a thrust in the left-right direction, the sludge contained in the stirring flow is scattered and stirred over a wide range, so that the concentration of sludge in the tank is made more uniform. It also has an effect.
汚水処理槽内の水路気中部に左右送行用のガイドレールを付設し、該ガイドレールの下方に左右送行可能に水中攪拌機の外周を覆う吸込みカバーに設けられたガイドにより該水中攪拌機をガイドレールに係合し、前記吸込みカバーの上流側始端上縁部を切欠き上流側に向って末広状に吸込口を形成し、更に、前記吸込みカバーの外周には水中攪拌機を浮かすためのフロートを設け、前記ガイドに付設される繋留具により水中攪拌機が繋留させる。また、水中攪拌機の前方へ導出された舵軸支持座によって舵軸が枢支され、該舵軸の前方に舵板が張出されると共に舵軸支持座の周辺部には舵角調節機構が付設され、吸込みカバー下面外部の前記水中攪拌機の中心線上に支点を有する操舵用槓杆が舵板の先端近くへ連繋され、水中攪拌機の両側方から対向状に配設されたストッパーによって操舵用槓杆の回動角度が規制され、前記水中攪拌機の中心線上に基点を置くコイルスプリングの始端部が舵板の先端近くに連結され、該伸縮構造体の作用によって舵板の反転回動力が付勢されるよう構成する。 A guide rail for left and right sending is attached to the middle of the water channel in the sewage treatment tank, and the submerged stirrer is made into a guide rail by a guide provided on a suction cover that covers the outer periphery of the submerged stirrer so as to be able to send left and right below the guide rail Engaging, forming a suction port in a divergent shape toward the upstream side by notching the upstream start end upper edge of the suction cover, and further providing a float for floating an underwater agitator on the outer periphery of the suction cover, An underwater stirrer is tethered by a tether attached to the guide. A rudder shaft is pivotally supported by a rudder shaft support seat led to the front of the underwater agitator, and a rudder plate is projected in front of the rudder shaft, and a rudder angle adjustment mechanism is attached to the periphery of the rudder shaft support seat. A steering rod having a fulcrum on the center line of the underwater stirrer outside the suction cover is connected to the vicinity of the tip of the rudder plate, and the steering rod is rotated by a stopper disposed oppositely from both sides of the underwater stirrer. The moving angle is regulated, the starting end of the coil spring that is located on the center line of the underwater stirrer is connected near the tip of the rudder plate, and the reverse turning force of the rudder plate is biased by the action of the telescopic structure Constitute.
図1において、1は汚水処理水槽、2は該処理槽1内の水路気中部に設けられた左右送行用のガイドレールであり、3は該ガイドレール2の下方に左右送行可能に表層水ともに浮遊スカムを吸引・破砕し吐出口7より攪拌排水する前部にプロペラ12を有する水中攪拌機3であり、該水中攪拌機3の外周を覆う吸込みカバー4に設けられたガイド5により該水中攪拌機3をガイドレール2に係合し、前記吸込みカバー4の上流側始端は表層流がスムーズに流入するよう上縁部を切欠き上流側に向って末広状に吸込口6を形成し、吸込みカバー4の外周には水中攪拌機3を浮かすためのフロート8が設けられ、前記ガイド5に付設される例えばチェーンやロープ等による繋留具9により水中攪拌機3が繋留させるよう構成する。
In FIG. 1, 1 is a sewage treatment water tank, 2 is a guide rail for left and right sending provided in the middle of the water channel in the
実施例1のスカム除去装置を前提として、図2および図3に示すよう、14は水中攪拌機3の前方へ導出された舵軸支持座、15は舵軸支持座14の後端部に枢支された舵軸であり、該舵軸15の前方に舵板が張出されると共に舵軸支持座14の周辺部には舵角調節機構(図示せず)が付設されている。該舵角調節機構の具体例として、舵板16の上縁から後方へ導延された縁材16eの両側方から対向するように、舵軸支持座14に配設された係止ピン17により回動角度が規制されるが、該係止ピン17の配設間隔を変更することによって舵板16の回動角度は調整可能となる。取付孔を配設することで上記係止ピン17の配設間隔を変更することも可能である。19は前記水中攪拌機3の中心線上に支点20を有する操舵用槓杆であり、該操舵用槓杆9の前部に穿設された長孔21が、舵板16の上縁前方部に植設された係合ピン22に係合することにより連繋される。23,23は吸込みカバー4の両側方から対向状に配設されたストッパーであり、ガイドレール2の下方を水中攪拌機3が左右に送行する際に、例えば、操舵用槓杆19の後方導延部がストッパー23,23と当接することで、操舵用槓杆19の反転位置が一定範囲に規制される。24は舵板16に反転回動力を付勢するための伸縮構造体であって、水中攪拌機3の中心線上に基点24aを置き、始端部24bは舵板16の先端近くに連結されている。該伸縮構造体24の具体例として、コイルスプリングやゴム紐体のほかエアーシリンダーやオイルシリンダーを用いることもできる。また、水中攪拌機3の自走性を円滑にするためガイドレール2と摺接するガイド5内周側に摺動材或いはローラ等を設けることが望ましい。
Assuming the scum removing device of the first embodiment, as shown in FIGS. 2 and 3, 14 is a rudder shaft support seat led to the front of the
1 汚水処理水槽
2 ガイドレール
3 水中攪拌機
4 吸込みカバー
5 ガイド
6 吸込口
7 吐出口
8 フロート
9 繋留具
12 プロペラ
14 舵軸支持座
15 舵軸
16 舵板
19 操舵用槓杆
20 支点
23 ストッパー
24 伸縮構造体
24a 基点
24b 始端部
DESCRIPTION OF SYMBOLS 1
Claims (3)
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JP2005158305A JP4522319B2 (en) | 2005-05-31 | 2005-05-31 | Scum remover |
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JP2005158305A JP4522319B2 (en) | 2005-05-31 | 2005-05-31 | Scum remover |
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JP2006334449A true JP2006334449A (en) | 2006-12-14 |
JP4522319B2 JP4522319B2 (en) | 2010-08-11 |
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JP2005158305A Expired - Fee Related JP4522319B2 (en) | 2005-05-31 | 2005-05-31 | Scum remover |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101186362B1 (en) | 2008-08-12 | 2012-10-02 | 민승기 | Floating water purification device equipped with a photovoltaic device in the sea surface of the reservoir or coastal area. |
CN114733398A (en) * | 2022-04-30 | 2022-07-12 | 魏佳铎 | Stirring type sewage treatment equipment with stirring mechanism convenient to replace |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0672690U (en) * | 1993-03-26 | 1994-10-11 | 日立機電工業株式会社 | Scum removal device |
JPH0737399U (en) * | 1993-12-21 | 1995-07-11 | 日立機電工業株式会社 | Underwater aeration mixer |
JP2003181264A (en) * | 2001-12-20 | 2003-07-02 | Tsurumi Mfg Co Ltd | Agitation apparatus of sewage treating tank |
-
2005
- 2005-05-31 JP JP2005158305A patent/JP4522319B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0672690U (en) * | 1993-03-26 | 1994-10-11 | 日立機電工業株式会社 | Scum removal device |
JPH0737399U (en) * | 1993-12-21 | 1995-07-11 | 日立機電工業株式会社 | Underwater aeration mixer |
JP2003181264A (en) * | 2001-12-20 | 2003-07-02 | Tsurumi Mfg Co Ltd | Agitation apparatus of sewage treating tank |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101186362B1 (en) | 2008-08-12 | 2012-10-02 | 민승기 | Floating water purification device equipped with a photovoltaic device in the sea surface of the reservoir or coastal area. |
CN114733398A (en) * | 2022-04-30 | 2022-07-12 | 魏佳铎 | Stirring type sewage treatment equipment with stirring mechanism convenient to replace |
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JP4522319B2 (en) | 2010-08-11 |
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