JP3534121B2 - Aeration method in water - Google Patents
Aeration method in waterInfo
- Publication number
- JP3534121B2 JP3534121B2 JP25066093A JP25066093A JP3534121B2 JP 3534121 B2 JP3534121 B2 JP 3534121B2 JP 25066093 A JP25066093 A JP 25066093A JP 25066093 A JP25066093 A JP 25066093A JP 3534121 B2 JP3534121 B2 JP 3534121B2
- Authority
- JP
- Japan
- Prior art keywords
- air
- water
- diffuser
- air diffuser
- rope
- 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 - Fee Related
Links
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
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、主としてダムや湖沼な
ど、水質浄化のために水中に空気を噴出させてエアレー
ションを行なう散気方法に関するものである。
【０００２】
【従来の技術】従来、水質を浄化するために使用される
散気管、または散気板などの散気体としては、小型のも
のでは魚類水槽のばっ気循環式のものから、大型のもの
では下水処理場用などのものまで多数使用されている。
一方、近年国内および国外において、閉鎖海域や、湖沼
の水質改善を目的としたばっ気循環も行なわれていて、
図６に示すように、ダム１などの水の中層ばっ気循環を
目的とした散気管２を設け、陸上のブロワーステーショ
ン５から加圧空気をホース６を介して散気管２へ圧送し
ている。
【０００３】上記散気管２からの空気の噴出は通常、散
気管２の円周上に数個のノズルを上向に取付け、噴気を
行なっており、このため気泡は大きく、かつ速く、短時
間で水面Ｗ．Ｌに上昇することになる。この散気管２の
方式は装置が簡単で回転機構がないので、流木やビニー
ル等の水中障害物に強く、長期間メンテナンスフリーが
期待できる。しかしながら、揚水効率を考えるなら、最
も動力効率の良いプロペラ方式が有利であるが、プロペ
ラ方式は回転機構がある分メンテナンスフリーにはなら
ない。
【０００４】
【発明が解決しようとする課題】本発明は、前記従来の
問題点を解決するためになされたものであり、その目的
とするところは、水の連れ行きを高め、散気体の揚水効
率を向上させるところにある。
【０００５】
【課題を解決するための手段】本発明は、水面に位置さ
せたフロータと、水中の可変ウエイトとの間で散気する
に際し、可変ウエイトの重量変化により散気位置を上下
に移動させる水中における散気方法からなる。
【０００６】
【実施例】以下図面を参照して本発明の実施例を説明す
るが、図１は散気管の上昇状態の維持を示す側面図で、
図２は図１の散気管の下降時の操作を示す側面図であ
る。まず、図１に示す散気管遠隔昇降装置は、ロープ７
の一端に吊り下げた散気管２と、そのロープ７の他端に
取付けた水中可変ウエイト９とを水面Ｗ．Ｌに浮上して
いるフロータ１０に設けた滑車１１に上記のロープ７を
介して交互に昇り降り可能に配設しているが、この滑車
１１上のロープ７は、スプリング付のブレーキングシリ
ンダー１９のスプリング力により滑車１１に対して押圧
され、ロープ７は滑車１１と固定状態になっている。な
お、この固定状態は、ブロワーステーション５のコンプ
レッサ２１からの圧縮空気Ａをブレーキングシリンダー
１９に注気することで解除される。
【０００７】図１のごとき状態では、湖水の水面Ｗ．Ｌ
が変動してもフロータ１０上の滑車１１に固定されたロ
ープ７に吊り下げられている散水管２は、湖水の水面
Ｗ．Ｌより一定の水深を自動的に維持することになる。
次に、散気管２の水面Ｗ．Ｌよりの水深を調整する際に
は、フロータ１０の滑車１１から散気管２を吊り下げて
いるロープ７と滑車１１との位置を調整する操作をすれ
ばよいわけであり、このような操作は電動ウインチなど
で遠隔操作することもできる。
【０００８】しかしながら、電気動力で遠隔操作すると
なると、高価な水中ケーブルや、水中制御線を湖底に布
設し、散気管の水深位置決め検出装置なども防水型で高
価なものとなる。そこで本発明者等は、この散気管２に
陸上のブロワーステーション５から空気を圧送している
ことに着目し、故障の少ない圧縮空気Ａの注排気操作を
採用したが、この操作のための圧縮空気用のホース６は
小口径でよく、しかも低価格のものの使用が可能であ
る。
【０００９】すなわち、前記水中可変ウエイト９の重量
変化を、陸上のブロワーステーション５のコンプレッサ
２１からの圧縮空気Ａの注排気により行なうようにして
いる。次に、散気管２の水面からの水深を遠隔操作によ
り調整する手順につき説明するが、図１に示す状態のよ
うに散気管２を上昇状態にする際には、スプリング付の
ブレーキングシリンダー１９にコンプレッサー２１から
の圧縮空気Ａを注気し、ブレーキングシリンダー１９を
そのスプリングの力に抗して持ち上げて、滑車１１とロ
ープ７との固定状態を解除の上、水中可変ウエイト９に
注気されていたコンプレッサ２１からの圧縮空気Ａを三
方弁２２で排気することにより、水中可変ウエイト１９
の空気室を減圧させ、水中可変ウエイト９を沈下させ
る。
【００１０】水中可変ウエイト９と散気管２とを両端に
取付けたロープ７は滑車１１を介して、井戸水を汲み上
げる釣瓶のごとく移動するので、水中可変ウエイト９の
下降に連動して散気管２が上昇し、水面Ｗ．Ｌから所要
の水深位置にきたところで、ブレーキングシリンダー１
９を排気することにより、そのスプリングが働いて、滑
車１１とロープ７とを図１のごとく固定状態にする。
【００１１】以上の圧縮空気Ａの水中可変ウエイト９お
よびブレーキングシリンダー１９への注排気の遠隔操作
は、地上のブロワーステーション５などで短時間に行な
うことができ、また散気管２の水深の検出はブロワー２
４の吐出圧の変化で可能である。なお、図１において散
気管２にはブロワーステーション５の高圧空気タンク２
３を備えたブロワー２４から空気が逆止弁３０付の送気
管２５で送られており、また散気管２には水中フロータ
２６が取付けられており、さらにフロータ１０はアンカ
ーおよびロープ２７で係留されている。
【００１２】一方、図２に示すように散気管２の水面か
らの水深を下降させる際には、上記の上昇の操作とほぼ
逆の手順で圧縮空気Ａの注排気を間隔操作で行なえばよ
い。そこで、本発明では、散気管２の揚水効果をより向
上させるため、図１と同じ部品は同じ符号で示す図３の
実施例２に係る散気管２を提案している。すなわち、散
気管２から上昇する気泡のもつ上昇エネルギーを有効に
利用させるため、気泡に強制的に渦流を発生させて散気
を行なう渦流散気方式を採用している。
【００１３】この渦流発生機構としては、図４に示すご
とく、散気管２の下に複数の吸入ガイド２７を取り付
け、その間に設けた複数のノズル２８から円周方向に噴
気を行なっており、またその上部には、図５に示すよう
に螺旋ガイド２９を配設して強制渦流を発生させてい
る。
【００１４】
【発明の効果】散気体に渦流散気方式を採用することに
より、散気体への吸入水の誘導促進と散気体から出た気
泡が接触する水の連れ行きを高め、散気体の揚水効果を
向上させることができる。また、湖沼の水位の変位があ
っても散気体が上下するから、散気体の水深をいつでも
適正に維持できると共に、必要に応じて散気体の水深を
遠隔操作により容易に調整可能である。さらにまた、散
気体の上下動により、散気による揚水効果を一層助長す
ることができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for diffusing air by blowing air into water for purifying water, such as dams and lakes. 2. Description of the Related Art Conventionally, as a gas diffuser such as an air diffuser tube or a diffuser plate used for purifying water quality, a small gas is used, from a gas circulation type in a fish tank to a large gas . Many are used, including those for sewage treatment plants.
On the other hand, in recent years, aerial circulation has been conducted both in Japan and overseas to improve water quality in closed sea areas and lakes and marshes.
As shown in FIG. 6, an air diffuser 2 for aerating the middle layer of water such as a dam 1 is provided, and pressurized air is blown from a land-based blower station 5 to the air diffuser 2 via a hose 6. . [0003] In general, air is blown from the air diffuser 2 by blowing several nozzles upward on the circumference of the air diffuser 2 so that air bubbles are large, fast, and short. At the water surface W. It will rise to L. Since the system of the air diffuser 2 is simple and has no rotating mechanism, it is resistant to underwater obstacles such as driftwood and vinyl, and can be expected to be maintenance-free for a long period of time. However, considering pumping efficiency, a propeller system with the highest power efficiency is advantageous, but the propeller system is not maintenance-free because of the rotation mechanism. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to increase the entrainment of water and to pump out diffused gas . The point is to improve efficiency. According to the present invention, when air is diffused between a floater positioned on the water surface and a variable weight in water, the air diffusion position is moved up and down due to a change in weight of the variable weight. It consists of a method of aeration in water. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG.
FIG. 2 is a side view showing an operation at the time of lowering the air diffusion tube of FIG. First, the diffuser remote lifting device shown in FIG.
And the underwater variable weight 9 attached to the other end of the rope 7 are attached to the water surface W. L is provided on a pulley 11 provided on a floater 10 floating on the L so as to be able to ascend and descend alternately via the rope 7. The rope 7 on the pulley 11 is provided with a braking cylinder 19 with a spring. The rope 7 is pressed against the pulley 11 by the spring force of the pulley 11, and the rope 7 is fixed to the pulley 11. This fixed state is released by supplying compressed air A from the compressor 21 of the blower station 5 to the braking cylinder 19. In the state as shown in FIG. L
The sprinkler pipe 2 hung on the rope 7 fixed to the pulley 11 on the floater 10 even if the water fluctuates. A constant water depth from L is automatically maintained.
Next, the water surface W. When adjusting the water depth from L, it is only necessary to perform an operation of adjusting the positions of the rope 7 and the pulley 11 that suspend the air diffuser tube 2 from the pulley 11 of the floater 10. It can also be remotely controlled with an electric winch. [0008] However, if remote operation is performed by electric power, expensive underwater cables and underwater control lines are laid at the bottom of the lake, and the water depth detection device for the air diffuser is also waterproof and expensive. Therefore, the present inventors have paid attention to the fact that air is blown from the on-land blower station 5 to the air diffuser 2 and adopted the operation of injecting and discharging compressed air A with less failure. The air hose 6 may have a small diameter and can be used at a low cost. That is, the weight change of the underwater variable weight 9 is performed by injecting and discharging the compressed air A from the compressor 21 of the blower station 5 on land. Next, a procedure for adjusting the water depth from the water surface of the air diffuser 2 by remote control will be described. When the air diffuser 2 is to be raised as shown in FIG. To the underwater variable weight 9 after releasing the fixed state between the pulley 11 and the rope 7 by lifting the braking cylinder 19 against the force of the spring, and injecting the compressed air A from the compressor 21 The compressed air A from the compressor 21 is exhausted by the three-way valve 22 so that the underwater variable weight 19
Is reduced in pressure, and the underwater variable weight 9 is settled. The rope 7 having the variable underwater variable weight 9 and the diffuser tube 2 attached to both ends moves like a fishing bottle for pumping well water through the pulley 11. Rises to the water level W. At the required water depth from L, brake cylinder 1
By evacuating 9, its spring works, and pulley 11 and rope 7 are fixed as shown in FIG. 1. The above remote control of the injection and discharge of the compressed air A to the underwater variable weight 9 and the braking cylinder 19 can be performed in a short time by the ground blower station 5 and the like, and the water depth of the air diffuser 2 can be detected. Is blower 2
4 can be achieved by changing the discharge pressure. In FIG. 1, the high-pressure air tank 2 of the blower station 5
Air is sent from a blower 24 equipped with a check valve 3 through an air supply pipe 25 equipped with a check valve 30, and an underwater floater 26 is attached to the diffuser pipe 2, and the floater 10 is moored by an anchor and a rope 27. ing. On the other hand, when lowering the water depth from the water surface of the air diffuser 2 as shown in FIG. 2, the compressed air A may be injected and exhausted by an interval operation in a procedure substantially opposite to the above-described operation. . Therefore, in order to further improve the water pumping effect of the air diffuser 2, the present invention proposes the air diffuser 2 according to the second embodiment shown in FIG. That is, in order to effectively utilize the rising energy of the bubbles rising from the air diffuser 2, an eddy current diffusion method in which a vortex is forcibly generated in the bubbles to diffuse the air is employed. As shown in FIG. 4, a plurality of suction guides 27 are mounted below the air diffuser 2 and a plurality of nozzles 28 provided therebetween blow air in a circumferential direction as shown in FIG. A spiral guide 29 is disposed on the upper part as shown in FIG. 5 to generate a forced vortex. [0014], according to the present invention in the air diffuser body by adopting a vortex diffuser system, increase the take go of water that bubbles out contacts from the induction promotion and air diffuser body of the intake water to the air diffuser body, it is possible to improve the pumping effect of the air diffuser body. Also, the displacement of the lake
Even if the gas diffuses up and down, the water depth of the gas
Can be maintained properly, and if necessary,
It can be easily adjusted by remote control. In addition,
Up and down movement of gas further promotes the pumping effect of aeration
Can be
【図面の簡単な説明】
【図１】実施例に係る散気管の上昇維持状態の側面図で
ある。
【図２】図１の散気管の下降時の操作を示す側面図であ
る。
【図３】散気管に渦流散気方式を採用した側面図であ
る。
【図４】図３のＢ−Ｂ方向の概略平面図である。
【図５】図３のＡ−Ａ方向の概略平面図である。
【図６】従来のダム湖用中層散気管設置の側面図であ
る。
【符号の説明】
２ 散気管 ７ ロープ
９ 水中可変ウエイト １０ フロータ
１１ 滑車 ２８ ノズル
２９ 螺旋ガイド Ａ 圧縮空気
Ｗ．Ｌ 水面BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of an air diffuser according to an embodiment in a state where the air diffuser is maintained at an elevated position. FIG. 2 is a side view showing an operation at the time of lowering the air diffuser tube of FIG. 1; FIG. 3 is a side view in which a vortex air diffusion method is adopted for an air diffusion tube. FIG. 4 is a schematic plan view in the BB direction of FIG. 3; FIG. 5 is a schematic plan view in the AA direction of FIG. 3; FIG. 6 is a side view of a conventional middle diffuser for dam lake. [Description of Signs] 2 Air diffuser 7 Rope 9 Underwater variable weight 10 Floater 11 Pulley 28 Nozzle 29 Spiral guide A Compressed air L water surface
フロントページの続き (56)参考文献 特開 昭52−121960（ＪＰ，Ａ) 特開 昭58−170595（ＪＰ，Ａ) 特開 平２−198694（ＪＰ，Ａ) 特開 平５−146792（ＪＰ，Ａ) 特開 昭56−39776（ＪＰ，Ａ) 特開 平５−161899（ＪＰ，Ａ) 特開 昭62−135699（ＪＰ，Ａ) 実開 昭62−114698（ＪＰ，Ｕ) 実開 昭58−23698（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) C02F 3/14 - 3/26 C02F 7/00 Continuation of front page (56) References JP-A-52-121960 (JP, A) JP-A-58-170595 (JP, A) JP-A-2-198694 (JP, A) JP-A-5-146792 (JP) JP-A-56-39776 (JP, A) JP-A-5-161899 (JP, A) JP-A-62-135699 (JP, A) JP-A-62-114698 (JP, U) JP-A-62-114698 58-23698 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) C02F 3/14-3/26 C02F 7/00
Claims (1)
変ウエイトとの間で散気するに際し、可変ウエイトの重
量変化により散気位置を上下に移動させる水中における
散気方法。(57) and [Claims 1] was positioned on the water surface floater, upon which the air diffuser between the variable weights of the water, the variable weights heavy
A diffuser method in water that moves the diffuser position up and down by changing the volume .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25066093A JP3534121B2 (en) | 1993-10-06 | 1993-10-06 | Aeration method in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25066093A JP3534121B2 (en) | 1993-10-06 | 1993-10-06 | Aeration method in water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07100493A JPH07100493A (en) | 1995-04-18 |
| JP3534121B2 true JP3534121B2 (en) | 2004-06-07 |
Family
ID=17211157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25066093A Expired - Fee Related JP3534121B2 (en) | 1993-10-06 | 1993-10-06 | Aeration method in water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3534121B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4648990B1 (en) * | 2009-12-17 | 2011-03-09 | 株式会社丸島アクアシステム | Lifting type aeration and circulation device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52121960A (en) * | 1976-04-06 | 1977-10-13 | Suzuki Yasuo | Diffusing apparatus for activated sludge treating equipment |
| JPS5639776A (en) * | 1979-09-03 | 1981-04-15 | Mitsubishi Heavy Ind Ltd | Liquid tank with ejector |
| JPS5837520Y2 (en) * | 1981-08-10 | 1983-08-24 | 株式会社 丸島水門製作所 | Aeration equipment for dams, lakes, etc. |
| JPS6040918B2 (en) * | 1982-04-01 | 1985-09-13 | 株式会社 ダイクレ | Aeration pipe for aeration, etc. |
| JP2670997B2 (en) * | 1985-12-06 | 1997-10-29 | 久男 牧野 | Retention device for pumping equipment |
| JPH039838Y2 (en) * | 1986-01-06 | 1991-03-12 | ||
| JPH02198694A (en) * | 1989-01-30 | 1990-08-07 | O H L:Kk | Double mixing type aerator |
| JPH05146792A (en) * | 1991-11-27 | 1993-06-15 | Oshima Koki Kk | Waste water treating device |
| JPH05161899A (en) * | 1991-12-16 | 1993-06-29 | Takashi Yamamoto | Aerating apparatus |
-
1993
- 1993-10-06 JP JP25066093A patent/JP3534121B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07100493A (en) | 1995-04-18 |
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