JPH0513438Y2 - - Google Patents
Info
- Publication number
- JPH0513438Y2 JPH0513438Y2 JP1988160514U JP16051488U JPH0513438Y2 JP H0513438 Y2 JPH0513438 Y2 JP H0513438Y2 JP 1988160514 U JP1988160514 U JP 1988160514U JP 16051488 U JP16051488 U JP 16051488U JP H0513438 Y2 JPH0513438 Y2 JP H0513438Y2
- Authority
- JP
- Japan
- Prior art keywords
- defoaming
- aeration tank
- water pipe
- water
- defoaming water
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 60
- 238000005273 aeration Methods 0.000 claims description 32
- 239000007921 spray Substances 0.000 claims description 18
- 230000000694 effects Effects 0.000 description 5
- 238000005187 foaming Methods 0.000 description 4
- 230000003254 anti-foaming effect Effects 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000006260 foam Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000005507 spraying Methods 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
- Degasification And Air Bubble Elimination (AREA)
- Activated Sludge Processes (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は下水処理場等において使用される曝気
槽用消泡装置の改良に関するものである。[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a defoaming device for an aeration tank used in a sewage treatment plant or the like.
（従来の技術）
下水処理場等において好気性微生物処理を行う
ための曝気槽は、その内部に設置された散気板か
ら浮上する気泡によつて激しく撹拌されるため、
水面に汚水の泡が発生して風などにより周囲に飛
散することがある。そこでこれによる環境汚染を
防止する等の目的で、従来から曝気槽の周囲には
消泡装置が取付られている。(Prior art) Aeration tanks used for aerobic microbial treatment in sewage treatment plants, etc. are violently agitated by air bubbles floating from the air diffuser plate installed inside the tank.
Bubbles of sewage may form on the water surface and be scattered by wind etc. Therefore, in order to prevent environmental pollution caused by this, a defoaming device has conventionally been installed around the aeration tank.
このような従来の消泡装置は、第４図と第５図
に示すように、曝気槽の壁面上部の水面から400
〜600mmの位置に受け棚３１を設け、この受け棚
３１上にスプレーノズル３２付きの消泡水管３３
を固定し、スプレーノズル３２から噴出される水
により泡を消すようにしたものであつた。ところ
が従来の消泡装置は、所定の距離から所定の衝撃
力で消泡水が泡に対してスプレーされることが必
要であるのにもかかわらず、スプレーノズル３２
の高さや角度が固定されていたため、処理水量の
変動等によつて曝気槽の水面が上下したり発泡状
態（スカムの水位）が変化したような場合、ノズ
ルの傾きや水面からの高さ調整等を的確に調整す
ることができず、十分な消泡効果を発揮できない
という欠点があつた。更にまた従来の消泡装置
は、曝気槽の壁面上端の歩行床面３４よりも400
〜600mm程度下方に固定されているため、スプレ
ーノズル３２の傾き、位置の調整及び閉塞時の掃
除や交換作業等が行いにくく、かつ危険であると
いう問題も多かつた。 As shown in Figures 4 and 5, this type of conventional defoaming device is installed at a distance of 400 m from the water surface at the top of the wall of the aeration tank.
A receiving shelf 31 is provided at a position of ~600 mm, and a defoaming water pipe 33 with a spray nozzle 32 is installed on this receiving shelf 31.
was fixed, and the bubbles were extinguished by water jetted from the spray nozzle 32. However, in conventional defoaming devices, although it is necessary to spray defoaming water onto foam from a predetermined distance with a predetermined impact force, the spray nozzle 32
Since the height and angle of the nozzle were fixed, if the water level in the aeration tank goes up or down or the foaming state (scum water level) changes due to fluctuations in the amount of water being treated, etc., it is necessary to adjust the nozzle tilt or height from the water surface. etc. cannot be adjusted accurately, and a sufficient antifoaming effect cannot be exhibited. Furthermore, the conventional defoaming device is 400 mm higher than the walking floor 34 at the upper end of the wall of the aeration tank.
Since the spray nozzle 32 is fixed approximately 600 mm downward, there are many problems in that it is difficult and dangerous to adjust the inclination and position of the spray nozzle 32, and to clean and replace the spray nozzle when it is blocked.
このため、実開昭54−78261号公報に示される
ように、消泡水主管に回転継手付きの単一の分岐
管を介して消泡水管を接続することによつて、曝
気槽の壁面に対するノズルの傾きを調節できるよ
うにする試みもなされている。しかしこの構造の
ものは、曝気槽の水面が最も上昇した際にも消泡
できるように高い位置に設けられているので、水
面が低下するとスプレーした消泡水の衝撃力が低
下してしまう。また発泡位置に対応して壁面から
の距離を変えるために回転継手の角度を調整する
とスプレーノズルと曝気槽の壁面との距離が変化
してしまうため、曝気槽の水面の変動に対処でき
る範囲が狭いこと、消泡水管が中央の単一の分岐
管により支持されているため長手方向に傾斜し易
く、右側と左側では水面からの距離が変動して消
泡効果が不均一となり易いこと等の問題を残して
いた。 For this reason, as shown in Japanese Utility Model Application No. 54-78261, by connecting the antifoaming water pipe to the main antifoaming water pipe through a single branch pipe with a rotary joint, it is possible to Attempts have also been made to make the nozzle tilt adjustable. However, this structure is installed at a high position so that it can defoam even when the water level of the aeration tank rises to the highest level, so when the water level drops, the impact force of the sprayed defoaming water decreases. In addition, if you adjust the angle of the rotary joint to change the distance from the wall according to the foaming position, the distance between the spray nozzle and the wall of the aeration tank will change, so the range that can cope with fluctuations in the water level of the aeration tank will be limited. The defoaming water pipe is narrow, and because it is supported by a single branch pipe in the center, it tends to tilt in the longitudinal direction, and the distance from the water surface changes on the right and left sides, making the defoaming effect likely to be uneven. I was left with a problem.
（考案が解決しようとする課題）
本考案は上記したような従来の問題を解決し、
曝気槽の水面の変動等に確実に対応して常に安定
した消泡効果を発揮することができ、またメンテ
ナンス作業を容易かつ安全に行うことができる曝
気槽用消泡装置を提供するために完成されたもの
である。(Problems that the invention attempts to solve) This invention solves the conventional problems as described above,
Completed to provide a defoaming device for an aeration tank that can reliably respond to fluctuations in the water level of the aeration tank, always exhibiting a stable defoaming effect, and that can perform maintenance work easily and safely. It is what was done.
（課題を解決するための手段）
本考案は、スプレーノズルを多数備えた水平方
向に延びる消泡水管を、その両端部に設けられた
クランク状の伸縮可能な中空アームを介して曝気
槽の壁面上部に上下方向に揺動可能に取り付けた
ことを特徴とするものである。(Means for Solving the Problems) The present invention connects a horizontally extending defoaming water pipe equipped with a large number of spray nozzles to the wall of an aeration tank via crank-like extensible hollow arms provided at both ends of the defoaming water pipe. It is characterized by being attached to the upper part so that it can swing vertically.
また、消泡水管の裏面に曝気槽の壁面と接触し
て消泡水管を所定の位置に保持する脚部を設けれ
ば更に好ましい。 Further, it is more preferable to provide a leg portion on the back surface of the defoaming water pipe that comes into contact with the wall surface of the aeration tank and holds the defoaming water pipe in a predetermined position.
（実施例）
次に本考案を図示の実施例によつて更に詳細に
説明する。(Examples) Next, the present invention will be explained in more detail with reference to illustrated examples.
第１図〜第３図において、１は曝気槽の壁面、
２はその上部に全体として水平方向に延びるよう
に取付けられた消泡水管である。消泡水管２は所
定の間隔で多数のスプレーノズル３を備えたもの
であり、その両端部にはクランク状の中空アーム
４，４が設けられている。この中空アーム４，４
の上端は回転継手５，５により主配管６に回転自
在に接続されており、消泡水管２を図示の下降位
置と、第３図に一点鎖線で示す上昇位置との間で
上下方向に揺動可能に支持している。この消泡水
管２には主配管６から中空アーム４を介して圧力
水が供給され、スプレーノズル３から曝気槽内の
水面に向かつてスプレーを行つて消泡するもので
ある。消泡水管２の上昇位置は、第３図に一点鎖
線で示したように曝気槽の壁面１の上端の歩行床
面７よりも高くなるようにしておく。 In Figures 1 to 3, 1 is the wall surface of the aeration tank;
Reference numeral 2 denotes a defoaming water pipe attached to the upper part thereof so as to extend horizontally as a whole. The defoaming water pipe 2 is equipped with a large number of spray nozzles 3 at predetermined intervals, and crank-shaped hollow arms 4 are provided at both ends thereof. This hollow arm 4,4
The upper end is rotatably connected to the main pipe 6 by rotary joints 5, 5, and the defoaming water pipe 2 is vertically swung between the lowered position shown in the figure and the raised position shown by the dashed line in FIG. It is movably supported. Pressure water is supplied to this defoaming water pipe 2 from a main pipe 6 via a hollow arm 4, and sprays from a spray nozzle 3 toward the water surface in the aeration tank to defoamer. The raised position of the defoaming water pipe 2 is set to be higher than the walking floor surface 7 at the upper end of the wall surface 1 of the aeration tank, as shown by the dashed line in FIG.
消泡水管２の位置を調節するには、例えば実施
例に示されるように曝気槽の歩行床面７に立てら
れた柱８からチエーン９等によつて消泡水管２を
吊り下げる方法を取ることができる。しかしこれ
のみではやや不安定となるため、第３図のように
消泡水管２の裏面に短い脚部１０を取付け、脚部
１０の先端を曝気槽の壁面１と接触させることに
より安定性を向上させることができる。またこれ
らの脚部１０はねじ、ストツプボルト、ターンバ
ツクル等の適宜の手段によつて伸縮可能な構造と
しておくものとする。 To adjust the position of the defoaming water pipe 2, for example, as shown in the embodiment, a method is used in which the defoaming water pipe 2 is suspended from a pillar 8 erected on the walking floor 7 of the aeration tank using a chain 9 or the like. be able to. However, this alone will make it somewhat unstable, so stability can be improved by attaching short legs 10 to the back of the defoaming water pipe 2 and bringing the tips of the legs 10 into contact with the wall surface 1 of the aeration tank, as shown in Figure 3. can be improved. Further, these leg portions 10 are constructed to be extendable and retractable by appropriate means such as screws, stop bolts, turnbuckles, etc.
更にまた、消泡水管２を支持している中空アー
ム４は伸縮可能な構造とされている。実施例では
中空アーム４は大径管と小径管とによつて構成さ
れており、小径管を引き出してボルト１２で固定
することによつて両者の相対的な位置を変えるこ
とができる構造となつている。 Furthermore, the hollow arm 4 supporting the defoaming water pipe 2 has an expandable and retractable structure. In the embodiment, the hollow arm 4 is composed of a large diameter tube and a small diameter tube, and the relative position of the two can be changed by pulling out the small diameter tube and fixing it with a bolt 12. ing.
（作用）
このように構成された本考案の曝気槽用消泡装
置は、常時は消泡水管２を水面に近い下降位置に
セツトしておき、主配管６から中空アーム４を介
して供給される圧力水を消泡水管２のスプレーノ
ズル３から水面に向かつてスプレーして消泡を行
うものであることは従来のものと同様である。(Function) In the defoaming device for an aeration tank of the present invention configured as described above, the defoaming water pipe 2 is normally set at a lowered position close to the water surface, and the defoaming water pipe 2 is normally set at a lowered position close to the water surface, and the defoaming water pipe 2 is supplied from the main pipe 6 via the hollow arm 4. This is similar to the conventional system in that defoaming is carried out by spraying pressure water from the spray nozzle 3 of the defoaming water pipe 2 toward the water surface.
しかし本考案においては、消泡水管２がクラン
ク状の伸縮可能な中空アーム４を介して曝気槽の
壁面１の上部に上下方向に揺動可能に取り付けら
れているので、処理水量の変動等によつて曝気槽
の水面が上下し発泡状態（スカムの位置）が変化
したような場合にも、消泡水管２の高さ及び中空
アーム４の長さを自由に変えることにより、所定
の距離から所定の衝撃力で消泡水を泡に対してス
プレーすることができ、これらの調整と噴射水量
の調整とにより常に最善の消泡効果を発揮させる
ことができる。このために本考案の装置は、水面
変動の大きい水路曝気用にも使用することがで
き、泡の飛散による周囲の汚染を確実に防止する
ことができる。 However, in the present invention, the defoaming water pipe 2 is attached to the upper part of the wall surface 1 of the aeration tank via a crank-shaped extensible hollow arm 4 so as to be able to swing vertically. Therefore, even when the water level in the aeration tank rises and falls and the foaming state (scum position) changes, by freely changing the height of the defoaming water pipe 2 and the length of the hollow arm 4, the water level in the aeration tank rises and falls and the foaming state (scum position) changes. Defoaming water can be sprayed onto foam with a predetermined impact force, and by adjusting these and the amount of water to be sprayed, the best defoaming effect can always be exhibited. For this reason, the device of the present invention can also be used for aeration of waterways where water level fluctuations are large, and can reliably prevent surrounding contamination due to flying bubbles.
また本考案の装置は消泡水管２を曝気槽の壁面
１の上端の歩行床面７よりも高い位置まで引き上
げることができるので、スプレーノズル３の修理
や点検等の際にも安全かつ容易に作業を行うこと
ができ、従来のように専用の足場を組んだりする
必要もない。 In addition, the device of the present invention can raise the defoaming water pipe 2 to a position higher than the walking floor 7 at the upper end of the aeration tank wall 1, making it safe and easy to repair or inspect the spray nozzle 3. The work can be carried out without the need for special scaffolding as in the past.
更に本考案の装置は消泡水管２をその両端部に
設けられた中空アーム４により支持しているの
で、水面に対して消泡水管２が長手方向に傾斜す
ることがなく、均一な消泡効果を得ることができ
るうえ、機械的強度に優れるので消泡水管２を長
尺のものとしても折損等のトラブルを生ずるおそ
れのないものである。 Furthermore, in the device of the present invention, the defoaming water pipe 2 is supported by the hollow arms 4 provided at both ends of the defoaming water pipe 2, so that the defoaming water pipe 2 is not tilted in the longitudinal direction with respect to the water surface, and the defoaming water pipe 2 is uniformly defoamed. In addition to being effective, it has excellent mechanical strength, so even if the defoaming water pipe 2 is made long, there is no risk of problems such as breakage.
（考案の効果）
本考案は以上に説明したように、消泡水管をク
ランク状の伸縮自在な中空アームを介して曝気槽
の壁面上部に上下方向に揺動可能に取り付けたこ
とにより、曝気槽の壁面からの距離を大きく変え
ることなくスプレーノズルの高さや噴射角度を変
えることができ、常に安定した消泡効果が得られ
るようにするとともに、メンテナンス作業を安全
かつ容易に行えるようにしたものであるから、従
来の問題点を一掃した曝気槽用消泡装置として、
その実用的価値は極めて大きいものである。(Effects of the invention) As explained above, the present invention has a defoaming water pipe attached to the upper part of the wall of the aeration tank via a crank-shaped extensible hollow arm so as to be able to swing vertically. The height and spray angle of the spray nozzle can be changed without significantly changing the distance from the wall, ensuring a stable defoaming effect at all times and making maintenance work safe and easy. As a defoaming device for aeration tanks that eliminates conventional problems,
Its practical value is extremely great.
第１図は本考案の実施例を示す正面図、第２図
はその部分的な拡大図、第３図は要部の一部切欠
側面図、第４図は従来例を示す正面図、第５図は
その断面図である。
１……曝気槽の壁面、２……消泡水管、３……
スプレーノズル、４……中空アーム、１０……脚
部。
Fig. 1 is a front view showing an embodiment of the present invention, Fig. 2 is a partially enlarged view thereof, Fig. 3 is a partially cutaway side view of the main part, and Fig. 4 is a front view showing a conventional example. FIG. 5 is a sectional view thereof. 1...Wall surface of aeration tank, 2...Defoaming water pipe, 3...
Spray nozzle, 4... hollow arm, 10... leg.
Claims (1)
びる消泡水管２を、その両端部に設けられたク
ランク状の伸縮可能な中空アーム４を介して、
曝気槽の壁面１の上部に上下方向に揺動可能に
取り付けたことを特徴とする曝気槽用消泡装
置。 ２ 消泡水管２の裏面に曝気槽の壁面１と接触し
て消泡水管２を所定の位置に保持する脚部１０
を設けた請求項１記載の曝気槽用消泡装置。[Claims for Utility Model Registration] 1. A horizontally extending defoaming water pipe 2 equipped with a large number of spray nozzles 3 is connected via a crank-shaped extensible hollow arm 4 provided at both ends thereof.
A defoaming device for an aeration tank, characterized in that it is attached to the upper part of a wall surface 1 of the aeration tank so as to be swingable in the vertical direction. 2 Legs 10 on the back side of the defoaming water pipe 2 that come into contact with the wall surface 1 of the aeration tank and hold the defoaming water pipe 2 in a predetermined position.
The defoaming device for an aeration tank according to claim 1, further comprising: a defoaming device for an aeration tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988160514U JPH0513438Y2 (en) | 1988-12-09 | 1988-12-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988160514U JPH0513438Y2 (en) | 1988-12-09 | 1988-12-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0281699U JPH0281699U (en) | 1990-06-25 |
| JPH0513438Y2 true JPH0513438Y2 (en) | 1993-04-08 |
Family
ID=31442644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988160514U Expired - Lifetime JPH0513438Y2 (en) | 1988-12-09 | 1988-12-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0513438Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5825807B2 (en) * | 2011-03-14 | 2015-12-02 | 株式会社アイ・エヌ・シー・エンジニアリング | Waste water treatment apparatus and waste water treatment method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5478261U (en) * | 1977-11-14 | 1979-06-04 |
-
1988
- 1988-12-09 JP JP1988160514U patent/JPH0513438Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0281699U (en) | 1990-06-25 |
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