JPH0747393A - Diffuser type water stream generating device provided in water - Google Patents
Diffuser type water stream generating device provided in waterInfo
- Publication number
- JPH0747393A JPH0747393A JP19456593A JP19456593A JPH0747393A JP H0747393 A JPH0747393 A JP H0747393A JP 19456593 A JP19456593 A JP 19456593A JP 19456593 A JP19456593 A JP 19456593A JP H0747393 A JPH0747393 A JP H0747393A
- Authority
- JP
- Japan
- Prior art keywords
- water
- floating body
- air
- generating
- diffuser type
- 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
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、ダム湖等の水域におい
て、温度成層の状態を人為的に操作することにより富栄
養化によって引起こされる植物プランクトンの異常増殖
を抑制する散気式水中水流発生装置に関する。BACKGROUND OF THE INVENTION The present invention relates to a diffused submerged water flow for suppressing abnormal growth of phytoplankton caused by eutrophication by artificially manipulating the temperature stratification condition in a water area such as a dam lake. Regarding the generator.
【0002】[0002]
【従来の技術とその問題点】一般に、ダム湖等の水域に
おいては比較的浅い部分は太陽熱並びに外気温の影響を
受けて水温が比較的高くなるが、ある水深(温度躍層)
以下になると温度変化の影響が及ばず、比較的低温のま
ま季節変化なく一定状態にある部分とに分けられる。[Prior art and its problems] Generally, in a water area such as a dam lake, the water temperature is relatively high in a relatively shallow portion due to the influence of the solar heat and the outside temperature, but a certain water depth (thermocline)
When the temperature becomes lower than the following, it is not affected by temperature change and can be divided into a part where the temperature remains relatively low and there is no seasonal change.
【0003】多くの植物プランクトンは、表層部の温度
が高い部分(温度成層)でしかも太陽光線が届くいわゆ
る有光層において光合成活動が活発に行われ、水中の栄
養分を取込み増殖する。そして、この温度成層の状態を
人為的に操作することにより、富栄養化によって引起こ
される植物プランクトンの異常増殖を抑制しようとする
技術は噴水装置や間欠式空気揚水として知られている。In many phytoplankton, photosynthetic activity is actively carried out in the high temperature part of the surface layer (temperature stratification) and in the so-called euphotic layer where sunlight reaches, and the nutrients in the water are taken in and proliferated. A technique for artificially manipulating the temperature stratification state to suppress abnormal growth of phytoplankton caused by eutrophication is known as a fountain device or intermittent air pumping.
【0004】噴水装置は成層循環装置としての機能を有
しており、低層の低温水を汲み上げ空中に散水すること
によって熱交換が行われ、成層の水温調整と温度躍層の
下降を促す機能がある。また、ポンプの吸水ポイントを
浅くする事で水中のプランクトンを吸込み、ポンプによ
って加圧する事でプランクトンにダメージを与え、増殖
能力を抑制する作用がある。The fountain device has a function as a stratification circulation device, and heat is exchanged by pumping low-temperature low-temperature water and sprinkling it in the air, thereby facilitating water temperature adjustment of the stratification and lowering of the thermocline. is there. Further, by making the water absorption point of the pump shallower, the plankton in the water is sucked, and the pressure is increased by the pump, which damages the plankton and suppresses the growth ability.
【0005】しかしながら、噴水装置はプランクトンの
加圧によるダメージと空中への散水に大きな動力を必要
とすることからポンプ動力は比較的大きくなる。したが
って成層内の循環に関しては比較的に使用エネルギーが
大きい。However, the fountain device requires a large amount of power for damage due to pressurization of plankton and water sprinkling into the air, so that the pump power is relatively large. Therefore, the energy used for circulation in the stratification is relatively large.
【0006】間欠式揚水筒は水底に設けたアンカに連結
されているので水面の変化に対して垂直方向の移動性が
悪く、大きな水位変動があるダム湖等には適さない。ま
た、大きな対流を発生させるため温度躍層を破壊する可
能性がある。Since the intermittent pumping cylinder is connected to the anchor provided at the bottom of the water, it has poor vertical mobility with respect to changes in the water surface, and is not suitable for dam lakes and the like where large water level fluctuations occur. In addition, there is a possibility of destroying the thermocline due to the generation of large convection.
【0007】また、間欠的に気泡弾による対流を発生す
るため、少量の給気に対しては気泡弾が出る間隔が長く
なるため対流発生の時間間隔が長くなると言う問題があ
る。Further, since the convection due to the bubble bullet is generated intermittently, there is a problem that the interval for the bubble bullet to be extended becomes longer for a small amount of air supply, so that the time interval for generating the convection becomes longer.
【0008】ポンプ式水流発生装置は、躍層低下のため
の深層水の表層への供給と対流のための水量の制御が容
易であり多くの利点を有するが、水中において連行を有
効に利用していない。ポンプノズルより噴射された噴流
速はノズルから遠ざかるほど軸流速が遅くなることから
連行力が弱くなる。The pump-type water flow generator has many advantages because it is easy to control the amount of water for convection and the supply of deep water to lower the stratocline, and has many advantages. However, entrainment is effectively used in water. Not not. The jet flow velocity injected from the pump nozzle becomes slower as it moves away from the nozzle, so the entrainment force becomes weaker.
【0009】一方、気泡による水流発生は、気泡が上昇
するときに気泡が膨脹しながら上昇する力を利用したも
のであるから、上昇するにしたがって連行力が強くなる
特性がある。On the other hand, since the water flow generated by the bubbles utilizes the force of the bubbles as they rise and the bubbles rise, the entrainment force increases.
【0010】[0010]
【発明が解決しようとする課題】したがって、本発明は
成層内に効率よく循環流を発生し水位変動が大きいダム
湖にも対応できる植物プランクトンの増殖活動を抑制で
きる散気式水中水流発生装置を提供する事を目的として
いる。SUMMARY OF THE INVENTION Therefore, the present invention provides a diffuser type underwater flow generator capable of efficiently generating a circulating flow in a stratified layer and coping with a dam lake having a large fluctuation in water level and capable of suppressing the growth activity of phytoplankton. It is intended to be provided.
【0011】[0011]
【課題を解決するための手段】本発明によれば、水面上
において装置全体を支持する浮体を有する散気式水中水
流発生装置において、浮体より調整可能な索条により懸
垂された気泡発生装置と、気泡の発生状況を制御するた
めの水温センサとから構成されている。According to the present invention, in a diffuser type underwater flow generator having a floating body for supporting the entire apparatus on the water surface, a bubble generating apparatus suspended from a floating body by an adjustable cord. , And a water temperature sensor for controlling the generation state of bubbles.
【0012】また、本発明によれば、水面上において装
置全体を支持する浮体を有する散気式水中水流発生装置
において、浮体より調整可能な索条により懸垂された対
流を発生する第2の気泡発生装置と躍層低下のため上昇
流を発生する第1の気泡発生装置と、温度センサからの
信号により第1および第2の気泡発生装置の運転状況を
調整もしくは切換える切換手段と温度センサとから構成
されている。Further, according to the present invention, in the diffuser type underwater water flow generating device having the floating body for supporting the entire apparatus on the water surface, the second bubble generating the convection suspended by the adjustable rope from the floating body. From the generator and the first bubble generator that generates an upward flow due to the fall of the stratum corneum, and from the temperature sensor and the switching means that adjusts or switches the operating conditions of the first and second bubble generators according to the signal from the temperature sensor. It is configured.
【0013】[0013]
【作用効果の説明】上記のように構成された散気式水中
水流発生装置において、当初は散気管を深い位置に設置
して強い連行力で効率よく水流を発生させ、温度センサ
により所定の躍層低下を達成した事を検知したら散気管
を上方に移動させ、所定の躍層付近で運転して表層内の
対流を継続して発生させる。[Explanation of action and effect] In the diffuser type underwater flow generator configured as described above, initially, the diffuser pipe is installed at a deep position to efficiently generate a water flow with a strong entrainment force, and the temperature sensor causes a predetermined jump. When it is detected that the stratification has been achieved, the air diffuser is moved upward, and the convection in the surface layer is continuously generated by operating near the predetermined stratocline.
【0014】また、第1の散気管と第2の散気管とを設
け、第2の散気管を所定の躍層付近に設置し、第1の散
気管を躍層低下期間とダム湖の水位とから決められた水
位に設置する。そして、温度センサにより所定の躍層低
下を検知したら第1の散気管から第2の散気管に切換え
て表層内の対流を発生させてもよい。Further, a first air diffuser and a second air diffuser are provided, the second air diffuser is installed in the vicinity of a predetermined stratocline, and the first air diffuser is used for the period of lowering the stratocumulus and the water level of the dam lake. It will be installed at the water level decided from. Then, when the temperature sensor detects a predetermined fall of the stratum corneum, the first diffuser pipe may be switched to the second diffuser pipe to generate convection in the surface layer.
【0015】かかる作用で必要以上の躍層低下を防止
し、継続的に表層内対流を効率よく発生させることがで
きる。Due to such an action, it is possible to prevent an excessive decrease in the stratum corneum and to continuously and efficiently generate convection in the surface layer.
【0016】[0016]
【実施例】以下、図面を参照して、本発明の第1実施例
を説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings.
【0017】図1において、複数の支持フロート1aを
有する浮体1からは吊下げワイヤ5の一端に散気管4が
懸垂されそのワイヤ5の他端は浮体1上のウインチ7に
接続されている。In FIG. 1, an air diffuser 4 is suspended from one end of a suspending wire 5 from a floating body 1 having a plurality of supporting floats 1a, and the other end of the wire 5 is connected to a winch 7 on the floating body 1.
【0018】また、その散気管4と浮体1との間には複
数(図示の例では3つ)の温度センサ2が所定の水深毎
に設けられている。A plurality of (three in the illustrated example) temperature sensors 2 are provided between the air diffuser 4 and the floating body 1 at predetermined water depths.
【0019】そして、陸上に設置された空気圧縮機6か
らは水上を経由して空気管3が散気管4に連結されてい
る。From the air compressor 6 installed on land, the air pipe 3 is connected to the air diffuser pipe 4 via the water.
【0020】以下、作用に付いて説明する。The operation will be described below.
【0021】当初、散気管4は躍層低下目標水深Aより
深い水深Cまでウインチ7で吊下げられる。そこで、空
気圧縮機6を作動させて空気を散気管4に給気する。水
深が十分に深いので気泡は十分に連行能力を発揮して強
力な上昇流を発生する。Initially, the air diffuser 4 is hung by the winch 7 to a water depth C deeper than the layer-descending target water depth A. Therefore, the air compressor 6 is operated to supply air to the air diffuser 4. Since the water depth is sufficiently deep, the bubbles exert sufficient entrainment ability and generate a strong upward flow.
【0022】所定水深の温度センサ2が所定値に達し、
躍層低下目標水深Aに達したと判断された時ウインチ7
で散気管4を上昇させ、水深Aの真上に固定して、表層
内の循環のための運転に切換えれば、目標躍層以上の表
層内の対流が継続され、植物プランクトンの増殖は防止
される。When the temperature sensor 2 at a predetermined water depth reaches a predetermined value,
Winches 7 when it is judged that the target water depth A for the decline
If the diffusing pipe 4 is raised by fixing it to the water depth A and switching to the operation for circulation in the surface layer, convection in the surface layer above the target stratocline is continued and phytoplankton growth is prevented. To be done.
【0023】図2は、本発明の第2実施例を示し、複数
の支持フロート11aに支持された浮体11にはウイン
チ17で所定深さに吊下げワイヤ5で懸垂された第1の
散気管14と躍層目標水深に懸垂された第2の散気管1
5とが設置されている。FIG. 2 shows a second embodiment of the present invention, in which a floating body 11 supported by a plurality of support floats 11a is suspended by a winch 17 to a predetermined depth and is suspended by a wire 5 in a first air diffusing tube. 14 and the second air diffuser 1 suspended at the stratospheric target water depth
5 and are installed.
【0024】それらの散気管と浮体11との間には複数
(図示の例では4つ)の温度センサ12が設けられ、散
気管14は空気管13a、散気管15は空気管13bで
それぞれ切換弁8を介して空気圧縮機6に連結されてい
る。A plurality of (four in the illustrated example) temperature sensors 12 are provided between the air diffuser and the floating body 11. The air diffuser 14 is switched to the air tube 13a and the air diffuser 15 is switched to the air tube 13b. It is connected to the air compressor 6 via a valve 8.
【0025】以下、作用に付いて説明する。The operation will be described below.
【0026】当初、空気圧縮機6から切換弁8を介して
第1の散気管14に給気し水深の深い位置から第1実施
例と同様に気泡を発生させる。温度センサ12で躍層が
所定深さに達したことを検知したら、第2の散気管15
に給気するよう切換弁8を切換える。Initially, the first air diffuser 14 is supplied with air from the air compressor 6 through the switching valve 8 to generate bubbles from a deep water position as in the first embodiment. When the temperature sensor 12 detects that the stratum corneum has reached a predetermined depth, the second diffuser 15
The switching valve 8 is switched so as to supply air.
【0027】第2の散気管15は躍層目標水深に設置さ
れているので、このまま運転を継続すれば、躍層が深く
なる事なく表層で対流が発生する。Since the second diffuser pipe 15 is installed at the target water layer for the stratum corneum, if the operation is continued as it is, convection occurs in the surface layer without deepening the stratum corneum.
【0028】[0028]
【発明の効果】本発明は以上説明したように構成されて
いるので、躍層を目標水深まで低下させるためには気泡
発生装置を水深の深いところに設置して連行作用を有効
に利用し、躍層が目標水深に達したらその水深で気泡発
生装置を運転して成層の対流を継続的に発生できるの
で、躍層の破壊なしに植物プランクトンの増殖を防止で
きる。Since the present invention is configured as described above, in order to lower the stratum corneum to the target water depth, the bubble generating device is installed at a deep water depth to effectively utilize the entrainment action, When the stratum reaches the target water depth, the bubble generator can be operated at that depth to continuously generate stratified convection, so that the growth of phytoplankton can be prevented without destroying the stratum crescent.
【図1】本発明の一実施例を示す散気式気泡発生装置の
構成図。FIG. 1 is a configuration diagram of an air diffusing bubble generator showing an embodiment of the present invention.
【図2】本発明の第2実施例を示す気泡発生装置の構成
図。FIG. 2 is a configuration diagram of a bubble generating device showing a second embodiment of the present invention.
1、11…浮体 2、12…温度センサ 3、13…空気管 4…散気管 5…吊下げワイヤ 6…空気圧縮機 7…ウインチ 8…切換弁 14…第1の散気管 15…第2の散気管 1, 11 ... Floating body 2, 12 ... Temperature sensor 3, 13 ... Air pipe 4 ... Diffuser pipe 5 ... Suspension wire 6 ... Air compressor 7 ... Winch 8 ... Switching valve 14 ... First diffuser pipe 15 ... Second Air diffuser
Claims (2)
を有する散気式水中水流発生装置において、浮体より調
整可能な索条により懸垂された気泡発生装置と、気泡の
発生状況を制御するための水温センサとから構成された
ことを特徴とする散気式水中水流発生装置。1. An air diffuser type underwater water flow generator having a floating body for supporting the entire apparatus on the water surface, and a bubble generator suspended by an adjustable rope from the floating body, and a state for generating bubbles. An air diffuser type underwater flow generator comprising a water temperature sensor.
を有する散気式水中水流発生装置において、浮体より調
整可能な索条により懸垂された対流を発生する第2の気
泡発生装置と躍層低下のため上昇流を発生する第1の気
泡発生装置と、温度センサからの信号により第1および
第2の気泡発生装置の運転状況を調整もしくは切換える
切換手段と温度センサとから構成されたことを特徴とす
る散気式水中水流発生装置。2. A diffuser type underwater water flow generator having a floating body for supporting the entire apparatus on the water surface, and a second bubble generator for generating convection suspended by a rope adjustable from the floating body and a stratospheric fall. Therefore, it is configured by a first bubble generating device for generating an upward flow, a switching means for adjusting or switching the operating conditions of the first and second bubble generating devices in response to a signal from the temperature sensor, and a temperature sensor. A diffuser type underwater flow generator.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19456593A JP3314892B2 (en) | 1993-08-05 | 1993-08-05 | Aeration type water flow generator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19456593A JP3314892B2 (en) | 1993-08-05 | 1993-08-05 | Aeration type water flow generator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0747393A true JPH0747393A (en) | 1995-02-21 |
JP3314892B2 JP3314892B2 (en) | 2002-08-19 |
Family
ID=16326649
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19456593A Expired - Fee Related JP3314892B2 (en) | 1993-08-05 | 1993-08-05 | Aeration type water flow generator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3314892B2 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004249248A (en) * | 2003-02-21 | 2004-09-09 | Yokogawa Electric Corp | Water cleaning system |
JP2005313064A (en) * | 2004-04-28 | 2005-11-10 | Yokogawa Electric Corp | Water quality conservation system |
JP2007196108A (en) * | 2006-01-25 | 2007-08-09 | Penta Ocean Constr Co Ltd | Water quality improvement method and its apparatus |
JP2008049215A (en) * | 2006-08-22 | 2008-03-06 | Marsima Aqua System Corp | Distributed aeration device |
JP2009045564A (en) * | 2007-08-21 | 2009-03-05 | Yokogawa Electric Corp | Oxygen dissolved water supply apparatus |
KR100905792B1 (en) * | 2007-07-19 | 2009-07-02 | 주식회사 솔라비 | A inhaler remote automatic adjusting device of lake water circulation device |
JP2011143400A (en) * | 2009-12-17 | 2011-07-28 | Marsima Aqua System Corp | Lifting type aeration/circulation apparatus |
JP2011194354A (en) * | 2010-03-23 | 2011-10-06 | Satoru Takamori | Apparatus for improving quality of water in dam lake, river or lake |
JP5884216B1 (en) * | 2015-07-09 | 2016-03-15 | 株式会社サンエイ | Water quality improvement device |
JP2017023928A (en) * | 2015-07-21 | 2017-02-02 | 株式会社テクノコア | Liquid injection agitation device |
-
1993
- 1993-08-05 JP JP19456593A patent/JP3314892B2/en not_active Expired - Fee Related
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004249248A (en) * | 2003-02-21 | 2004-09-09 | Yokogawa Electric Corp | Water cleaning system |
JP2005313064A (en) * | 2004-04-28 | 2005-11-10 | Yokogawa Electric Corp | Water quality conservation system |
JP2007196108A (en) * | 2006-01-25 | 2007-08-09 | Penta Ocean Constr Co Ltd | Water quality improvement method and its apparatus |
JP2008049215A (en) * | 2006-08-22 | 2008-03-06 | Marsima Aqua System Corp | Distributed aeration device |
JP4728911B2 (en) * | 2006-08-22 | 2011-07-20 | 株式会社丸島アクアシステム | Distributed air diffuser |
KR100905792B1 (en) * | 2007-07-19 | 2009-07-02 | 주식회사 솔라비 | A inhaler remote automatic adjusting device of lake water circulation device |
JP2009045564A (en) * | 2007-08-21 | 2009-03-05 | Yokogawa Electric Corp | Oxygen dissolved water supply apparatus |
JP2011143400A (en) * | 2009-12-17 | 2011-07-28 | Marsima Aqua System Corp | Lifting type aeration/circulation apparatus |
JP2011194354A (en) * | 2010-03-23 | 2011-10-06 | Satoru Takamori | Apparatus for improving quality of water in dam lake, river or lake |
JP5884216B1 (en) * | 2015-07-09 | 2016-03-15 | 株式会社サンエイ | Water quality improvement device |
JP2017018933A (en) * | 2015-07-09 | 2017-01-26 | 株式会社サンエイ | Water quality improvement apparatus |
JP2017023928A (en) * | 2015-07-21 | 2017-02-02 | 株式会社テクノコア | Liquid injection agitation device |
Also Published As
Publication number | Publication date |
---|---|
JP3314892B2 (en) | 2002-08-19 |
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