JPH0691297A - Water purification equipment - Google Patents
Water purification equipmentInfo
- Publication number
- JPH0691297A JPH0691297A JP27086992A JP27086992A JPH0691297A JP H0691297 A JPH0691297 A JP H0691297A JP 27086992 A JP27086992 A JP 27086992A JP 27086992 A JP27086992 A JP 27086992A JP H0691297 A JPH0691297 A JP H0691297A
- Authority
- JP
- Japan
- Prior art keywords
- water
- draft tube
- screw
- air
- stirring
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 238000000746 purification Methods 0.000 title claims description 6
- 238000005273 aeration Methods 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 9
- 238000009423 ventilation Methods 0.000 claims description 8
- 238000005276 aerator Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 abstract 2
- 239000010410 layer Substances 0.000 description 5
- 239000002344 surface layer Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 150000003839 salts Chemical class 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
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ため池、湖沼等におい
て水深の深い水域内に設置し、水域を曝気撹拌すること
により、浄化を効果的に行う水域の浄化装置に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a purification apparatus for a water area which is installed in a deep water area such as a reservoir or a lake and marshes the water area by aeration and stirring to effectively purify the water area.
【０００２】[0002]
【従来の技術】従来より、水深の深い水域を撹拌する手
段として、図２に示すような空気揚水筒が使用されてい
る。これは、ブロワーを用いて空気室１３に送気し、空
気室に空気が充満すると空気の塊となって揚水筒１２内
を上昇するため、エアリフト効果が生じて揚水筒底部か
ら水が吸引され、揚水筒上部から放出されるという方式
である。2. Description of the Related Art Conventionally, an air pump as shown in FIG. 2 has been used as a means for agitating a deep water area. This is because air is sent to the air chamber 13 using a blower, and when the air chamber is filled with air, it becomes a lump of air and rises in the water pump 12 so that an air lift effect occurs and water is sucked from the bottom of the water pump. It is a system that is discharged from the upper part of the pumping cylinder.
【０００３】[0003]
【発明が解決しようとする課題】揚水筒底部からエアリ
フト効果にて給水し、上部から放出する方式において
は、比較的省エネルギーであるが曝気能力や撹拌能力が
小さく、期待されるような浄化効果が得られないという
問題があった。In the method of supplying water from the bottom of the pumping cylinder by the air lift effect and discharging it from the upper part, it is relatively energy-saving, but the aeration capacity and the stirring capacity are small, and the expected purification effect is obtained. There was a problem that I could not get it.
【０００４】本発明は、水深３〜５ｍ以上の深い水域内
の水を曝気浄化しながら水域を浄化するに適した浄化装
置を提供することにある。An object of the present invention is to provide a purifying apparatus suitable for purifying a water body while aerating and purifying water in a deep water body having a depth of 3-5 m or more.
【０００５】[0005]
【課題を解決するための手段】本発明は上記目的を達成
するためになしたもので、底部に吸水口、上部に排出口
をもつドラフトチューブと、ドラフトチューブ内に設け
たスクリュー式曝気機と、スクリュー先端の負圧発生領
域に水上の空気を導く通気管とを備え、曝気と撹拌とを
同時に行うようになしたことを要旨とする。SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and includes a draft tube having a water inlet at the bottom and an outlet at the top, and a screw type aerator provided in the draft tube. The gist of the present invention is that a negative pressure generating region at the tip of the screw is provided with a ventilation pipe for guiding air above water, and aeration and stirring are performed at the same time.
【０００６】[0006]
【作用】本発明は、撹拌混合作用を大きくするため、エ
アリフト効果と機械撹拌力の両者を利用したもので、底
部に吸水口、上部に排出口をもつドラフトチューブを上
部フロートと底部アンカーにより固定し、ドラフトチュ
ーブ内にはスクリュー式の曝気撹拌機を設けてブロワー
により水上の空気を散気管を介してスクリュー先端部へ
と供給し、スクリューの回転により気泡の微細化と、ド
ラフトチューブ底部からの吸水と上部からの排出を行う
ことにより、水域内の水を効率的に曝気撹拌して水域を
浄化する。The present invention utilizes both the air lift effect and the mechanical stirring force in order to increase the stirring and mixing action. A draft tube having a water inlet at the bottom and an outlet at the top is fixed by the upper float and the bottom anchor. Then, a screw-type aeration agitator was installed in the draft tube, and the air above the water was supplied to the tip of the screw through the air diffuser by a blower, and the rotation of the screw atomized the air bubbles and created the bottom of the draft tube. By absorbing water and discharging it from the upper part, the water in the water area is efficiently aerated and stirred to purify the water area.
【０００７】[0007]
【実施例】以下、本発明の水域の浄化装置を図１の実施
例に基づいて説明する。図において３は底部に吸水口３
ａ、上部に排出口３ｂをもつドラフトチューブで、底部
にはアンカー７、上部にはフロート４を設けて水中の所
定の位置に固定する。吸水口３ａ、排出口３ｂは共に放
射方向に伸び、底層では周囲からドラフトチューブに向
かって吸水され、表層ではドラフトチューブから周囲の
全方向に向かって排出させる構造になっている。ドラフ
トチューブ３内には、スクリュー１と水中モータ２から
なる曝気撹拌機をスクリューを上向きにして設置し、ス
クリュー先端に通気管６の吐出口がくるように通気管を
固定し、水上の架台８に固定したブロワー５と、散気管
６を接続する。曝気撹拌機の設置位置はドラフトチュー
ブの長さによって異なるが、曝気した空気から水中への
酸素溶解効率等を考慮すれば、通気室の吐出口が少なく
とも水深３ｍ以上となるように設置するのが望ましい。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A water purification apparatus according to the present invention will be described below with reference to the embodiment of FIG. In the figure, 3 is a water inlet 3 at the bottom.
a, a draft tube having a discharge port 3b in the upper part, an anchor 7 in the bottom part, and a float 4 in the upper part, and fixed at a predetermined position in water. Both the water inlet 3a and the water outlet 3b extend in the radial direction, and have a structure in which water is absorbed from the periphery toward the draft tube in the bottom layer, and water is discharged from the draft tube in all directions around the surface layer. In the draft tube 3, an aeration agitator composed of a screw 1 and a submersible motor 2 is installed with the screw facing upward, and the ventilation pipe is fixed so that the discharge port of the ventilation pipe 6 comes to the tip of the screw. The blower 5 fixed to the above is connected to the air diffuser 6. The installation position of the aeration stirrer differs depending on the length of the draft tube, but considering the efficiency of oxygen dissolution from the aerated air to water, it is recommended to install the aeration chamber so that the discharge port of the aeration chamber is at least 3 m deep. desirable.
【０００８】また本実施例では通気管の吐出口がスクリ
ュー先端部に位置するように固定しているが、スクリュ
ー１、及び水中モータ２の軸を中空とし、水中モータの
下側で中空軸と散気管６を接続することも可能である。In this embodiment, the discharge port of the ventilation pipe is fixed so that it is located at the tip of the screw. However, the shaft of the screw 1 and the submersible motor 2 is hollow, and the hollow shaft is provided below the submersible motor. It is also possible to connect the air diffuser 6.
【０００９】次に本発明の動作・作用を説明する。曝気
撹拌機の水中モータ２を作動すると、スクリュー１の回
転によりスクリュー先端部に負圧が生じる。この負圧の
大きさはモータ容量や、スクリューの設置位置等により
左右され、水深が浅い場合には水上にブロワー５を設け
なくても、の負圧により通気管を介して水上の空気が吸
引されるが、水圧の影響を受けるため、空気を自給する
場合でも、その量は極めて少ない。ただしこのような負
圧が発生しているため、ブロワー５でわずかの圧力をか
けることにより、所要の空気が通気管６を介してスクリ
ュー１の先端に供給され、スクリューのエッジでせん断
されて微細気泡となる。気泡の上昇と、スクリューによ
る上向きの流れによりドラフトチューブ底部の吸込口３
ａからは底層の水が吸引され、ドラフトチューブ内を上
昇して上部の排出口３ｂから放射状に噴出されるような
流れが生ずる。この時、底層の水は溶存酸素が少なく、
条件によっては嫌気化している場合があるが、ドラフト
チューブ内で微細気泡と接触することにより、溶存酸素
濃度が上昇する。Next, the operation and action of the present invention will be described. When the submersible motor 2 of the aeration stirrer is operated, the rotation of the screw 1 causes a negative pressure at the tip of the screw. The magnitude of this negative pressure depends on the motor capacity, the screw installation position, etc. If the water depth is shallow, the negative pressure of will suck the air above the water through the ventilation pipe without providing the blower 5 above the water. However, because of the influence of water pressure, the amount of air is extremely small even when self-sufficient. However, since such a negative pressure is generated, by applying a slight pressure with the blower 5, the required air is supplied to the tip of the screw 1 through the ventilation pipe 6, and is sheared at the edge of the screw to be finely divided. It becomes a bubble. Suction port 3 at the bottom of the draft tube due to the rise of air bubbles and the upward flow of the screw
The water in the bottom layer is sucked from a, rises in the draft tube, and a flow is generated so as to be radially ejected from the upper discharge port 3b. At this time, the bottom layer water has little dissolved oxygen,
Depending on the conditions, it may be anaerobic, but the dissolved oxygen concentration rises due to contact with fine bubbles in the draft tube.
【００１０】ドラフトチューブの排出口３ｂから噴出し
た水によって表層には岸辺に向かう放射状の流れができ
るが、噴出した底層の水は通常、表層の水よりも水温が
低く重いため、ドラフトチューブ排出口を出た後、沈降
するような流れもできる。従って時間が経過すると、ド
ラフトチューブ排出口から表層を岸辺まで流れて沈降
し、費用層を水域中央部のドラフトチューブ吸込口に向
かって流れる大循環と、ドラフトチューブ排出口をでる
とすぐに沈み込んでドラフトチューブ吸込口へと戻って
くる小循環が形成される。The water jetted from the draft tube discharge port 3b causes a radial flow toward the shore on the surface layer, but the jetted bottom layer water is usually lower in water temperature and heavier than the surface layer water, and therefore the draft tube discharge port. It is also possible to settle the flow after leaving. Therefore, after a lapse of time, a general circulation flows from the draft tube discharge port to the shore on the surface layer to the shore, and the cost layer flows toward the draft tube suction port in the central part of the water area, and immediately when the draft tube discharge port exits. A small circulation is formed that returns to the draft tube suction port.
【００１１】[0011]
【発明の効果】本発明によれば底部に吸水口、上部に排
出口をもつドラフトチューブを上部フロートと底部アン
カーにより固定し、ドラフトチューブ内にはスクリュー
式の曝気撹拌機と、スクリュー先端部の負圧発生領域に
通気管の吐出口を設け、水上のブロワーで空気を供給し
てスクリューエッジで気泡を微細化させる方式のため、
以下に示す効果を有する。 （１）従来の空気揚水筒とは異なり、機械式の曝気撹拌
機を用いているため、連続的に撹拌できる上、エアリフ
ト作用と、スクリューによる水流を利用するため、大き
な撹拌効果が得られる。 （２）通常の撹拌機は水だけを移送するトルクが必要な
のに対し、本発明は水と空気の混合物を移送することか
ら、水よりも比重が軽く、小さいトルクで移送できるた
め、省エネが図られる。 （３）水域全体が撹拌混合されるため、全体を好気状態
に保つことができ、有機物の好気分解が促進され、藻の
発生を抑制できる。また底泥も好気化するため、底泥か
らの栄養塩溶出を防止でき、植物プランクトンの増殖を
抑制することができる。According to the present invention, a draft tube having a water inlet at the bottom and an outlet at the top is fixed by an upper float and a bottom anchor, and a screw type aerator and a screw tip are installed in the draft tube. Since the discharge port of the ventilation pipe is provided in the negative pressure generation area, air is supplied by the blower above the water and the bubbles are made fine by the screw edge,
It has the following effects. (1) Unlike the conventional air pumping cylinder, a mechanical aeration stirrer is used, so continuous stirring is possible, and a large stirring effect is obtained because the air lift action and the water flow by the screw are used. (2) Whereas an ordinary stirrer requires a torque to transfer only water, the present invention transfers a mixture of water and air, so that the specific gravity is lighter than water and it can be transferred with a small torque, thus saving energy. To be (3) Since the whole water area is stirred and mixed, the whole area can be kept aerobic, the aerobic decomposition of organic matter can be promoted, and the generation of algae can be suppressed. Further, since the bottom mud is also aerobicized, nutrient salt elution from the bottom mud can be prevented and the growth of phytoplankton can be suppressed.
【図１】本発明水域の浄化装置の実施例を示す断面図で
ある。FIG. 1 is a cross-sectional view showing an embodiment of a water purification apparatus of the present invention.
【図２】公知例の説明図である。FIG. 2 is an explanatory diagram of a known example.
１ スクリュー ２ 水中モータ ３ ドラフトチューブ ３ａ 吸水口 ３ｂ 排出口 ４ フロート ５ ブロワー ６ 通気管 1 Screw 2 Submersible Motor 3 Draft Tube 3a Water Suction Port 3b Discharge Port 4 Float 5 Blower 6 Vent Pipe
Claims (1)
フトチューブと、ドラフトチューブ内に設けたスクリュ
ー式曝気機と、スクリュー先端の負圧発生領域に水上の
空気を導く通気管とを備え、曝気と撹拌とを同時に行う
ようになしたことを特徴とする水域の浄化装置。1. A draft tube having a water intake port at the bottom and a discharge port at the top, a screw type aerator provided in the draft tube, and a ventilation pipe for introducing air above water to a negative pressure generating region at the tip of the screw. , A water purification device, which is characterized by performing aeration and stirring at the same time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27086992A JP3385047B2 (en) | 1992-09-14 | 1992-09-14 | Water purification equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27086992A JP3385047B2 (en) | 1992-09-14 | 1992-09-14 | Water purification equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0691297A true JPH0691297A (en) | 1994-04-05 |
| JP3385047B2 JP3385047B2 (en) | 2003-03-10 |
Family
ID=17492105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27086992A Expired - Fee Related JP3385047B2 (en) | 1992-09-14 | 1992-09-14 | Water purification equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3385047B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002273479A (en) * | 2001-03-21 | 2002-09-24 | Yoshiji Sakamoto | Cleaning equipment utilizing portion of water area (1) in cleaning equipment for water area (1) to be installed within water area (1) |
| JP2003053372A (en) * | 2001-08-22 | 2003-02-25 | Nippon Chutetsukan Kk | Water cleaning device |
| JP2009207971A (en) * | 2008-03-03 | 2009-09-17 | Marsima Aqua System Corp | Air lift device |
| JP2010119904A (en) * | 2008-11-17 | 2010-06-03 | Marsima Aqua System Corp | Air pumping equipment |
| KR100965784B1 (en) * | 2009-09-15 | 2010-06-29 | 한국기계연구원 | Water circulation device for water-bloom prevention using sunlight |
| WO2011092495A1 (en) * | 2010-01-28 | 2011-08-04 | Aquafide Engineering Limited | Submersible reactor and/or circulation apparatus |
| WO2012111987A3 (en) * | 2011-02-16 | 2012-12-20 | (주)에코코 | Stirring device for water treatment |
| CN102897857A (en) * | 2012-10-18 | 2013-01-30 | 上海交通大学 | A method of inhibiting the growth of cyanobacteria by utilizing water body disturbance |
| CN103787433A (en) * | 2012-10-18 | 2014-05-14 | 上海交通大学 | Method for inhibiting blue algae from growing through water body disturbance |
| CN111995080A (en) * | 2020-08-24 | 2020-11-27 | 中国建筑第八工程局有限公司 | Suspended anti-blocking underwater aeration equipment |
-
1992
- 1992-09-14 JP JP27086992A patent/JP3385047B2/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002273479A (en) * | 2001-03-21 | 2002-09-24 | Yoshiji Sakamoto | Cleaning equipment utilizing portion of water area (1) in cleaning equipment for water area (1) to be installed within water area (1) |
| JP2003053372A (en) * | 2001-08-22 | 2003-02-25 | Nippon Chutetsukan Kk | Water cleaning device |
| JP2009207971A (en) * | 2008-03-03 | 2009-09-17 | Marsima Aqua System Corp | Air lift device |
| JP2010119904A (en) * | 2008-11-17 | 2010-06-03 | Marsima Aqua System Corp | Air pumping equipment |
| JP2012528714A (en) * | 2009-09-15 | 2012-11-15 | エココ カンパニー リミテッド | Green algae-preventing water circulation system using sunlight |
| KR100965784B1 (en) * | 2009-09-15 | 2010-06-29 | 한국기계연구원 | Water circulation device for water-bloom prevention using sunlight |
| WO2011034282A3 (en) * | 2009-09-15 | 2011-07-21 | (주)에코코 | Water circulation device for preventing algal bloom using sunlight |
| CN102448895A (en) * | 2009-09-15 | 2012-05-09 | 环保有限公司 | Water circulation device for preventing algal bloom using sunlight |
| WO2011092495A1 (en) * | 2010-01-28 | 2011-08-04 | Aquafide Engineering Limited | Submersible reactor and/or circulation apparatus |
| WO2012111987A3 (en) * | 2011-02-16 | 2012-12-20 | (주)에코코 | Stirring device for water treatment |
| CN102897857A (en) * | 2012-10-18 | 2013-01-30 | 上海交通大学 | A method of inhibiting the growth of cyanobacteria by utilizing water body disturbance |
| CN103787433A (en) * | 2012-10-18 | 2014-05-14 | 上海交通大学 | Method for inhibiting blue algae from growing through water body disturbance |
| CN111995080A (en) * | 2020-08-24 | 2020-11-27 | 中国建筑第八工程局有限公司 | Suspended anti-blocking underwater aeration equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3385047B2 (en) | 2003-03-10 |
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