JPH03238097A - Water surface stirring ship - Google Patents
Water surface stirring shipInfo
- Publication number
- JPH03238097A JPH03238097A JP2035488A JP3548890A JPH03238097A JP H03238097 A JPH03238097 A JP H03238097A JP 2035488 A JP2035488 A JP 2035488A JP 3548890 A JP3548890 A JP 3548890A JP H03238097 A JPH03238097 A JP H03238097A
- Authority
- JP
- Japan
- Prior art keywords
- water
- plankton
- water surface
- rotor
- rotors
- 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 68
- 238000003756 stirring Methods 0.000 title claims abstract description 18
- 239000003966 growth inhibitor Substances 0.000 claims abstract description 14
- 239000006185 dispersion Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 17
- 229910000365 copper sulfate Inorganic materials 0.000 abstract description 4
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 abstract description 4
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000005507 spraying Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 4
- 238000013019 agitation Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 230000001141 propulsive effect Effects 0.000 description 4
- 238000007654 immersion Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000035755 proliferation Effects 0.000 description 2
- 239000002352 surface water Substances 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007921 spray Substances 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)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、ダム湖等の水面において、プランクトンの異
常発生を防止して水質保全を図れるようにした水面撹拌
船に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a water surface agitation boat that is capable of preventing abnormal occurrence of plankton and maintaining water quality on the water surface of a dam lake or the like.
［従来の技術］
ダム湖等において、一般に我国では夏期においてプラン
クトンは水深数ｍ程度までの表層部有光層に多く発生す
る。プランクトンが増殖し易い水温はプランクトンの種
類によって若干界なるか、おおむね２０℃以上であるこ
とか多い。[Prior Art] In general, in Japan, in summer in dam lakes, plankton occurs in abundance in the surface euphotic layer up to a depth of several meters. The water temperature at which plankton can easily proliferate varies slightly depending on the type of plankton, but is generally 20°C or higher.
ダム湖表層部の水温は夏期には２０〜２５℃程度にも達
することが多く、このとき水深２〜５ｍ程度のところの
水温は、表層に比べて５℃程度低くなっていることが多
い。The water temperature in the surface layer of a dam lake often reaches about 20 to 25 degrees Celsius in the summer, and at this time, the water temperature at a depth of about 2 to 5 meters is often about 5 degrees Celsius lower than in the surface layer.
従って、ダム湖等において、その水面より深さ２〜５ｍ
程度に位置する温度が低く溶存酸素が少ない水と、温度
が高く溶存酸素が飽和状態にある水面付近の水とを混合
すれば、水面表層の水質のバランスがくずれ、水面温度
が低下することと、水面氷塊中のプランクトンが下部に
送られて光不足になることによって増殖か抑えられるこ
とにより、プランクトンの異常発生をおさえることがで
きる。Therefore, in dam lakes, etc., the depth of 2 to 5 meters below the water surface is
If water near the water surface, which has a low temperature and low dissolved oxygen, is mixed with water near the water surface, which has a high temperature and is saturated with dissolved oxygen, the balance of water quality in the surface layer will be disrupted, and the water surface temperature will drop. , plankton in the water surface ice mass is sent to the lower part of the water, and its proliferation is suppressed due to the lack of light, thereby suppressing the abnormal occurrence of plankton.
また、水深が比較的浅い区域においては、溶存酸素の多
い表面の水を湖底に供給することにより、湖底部の酸素
欠乏及び流れの停滞を防ぐことができる。Furthermore, in areas where the water depth is relatively shallow, by supplying surface water with a high amount of dissolved oxygen to the lake bottom, it is possible to prevent oxygen depletion at the lake bottom and stagnation of the flow.
一方、ダム湖の放流口の上部水面においては、水面の水
が停滞し水質の悪化を起こしやすい。On the other hand, at the upper water surface of the outlet of a dam lake, the surface water tends to stagnate, causing deterioration of water quality.
よって、水面付近の水を撹拌分散することによリ、放流
口上部の水質を改善できると考えられる。Therefore, it is thought that the water quality above the outlet can be improved by stirring and dispersing the water near the water surface.
これらのことより、ダム湖等の水面を機械的に撹拌する
装置を用いれば、ダム湖等の水質を改善できると考えら
れる。Based on these facts, it is thought that the water quality of dam lakes and the like can be improved by using a device that mechanically stirs the water surface of dam lakes and the like.
［発明が解決しようとする課題］
しかし従来は、１台の装置でダム湖等の水面の任意の位
置に移動して水面を撹拌できるようにした装置はなかっ
た。[Problems to be Solved by the Invention] However, until now, there has been no device that can move to any desired position on the water surface of a dam lake or the like and agitate the water surface using a single device.
本発明は、水面の任意の位置に移動しながら水面の水を
撹拌し、必要に応じてプランクトン増殖抑制剤を散布し
てプランクトンの増殖を抑制し、ダム湖等の水質を保全
できるようにした水面撹拌船を提供することを目的とす
るものである。The present invention agitates water on the surface of the water while moving to any position on the water surface, sprays a plankton growth inhibitor as necessary to suppress plankton growth, and maintains the water quality of dam lakes, etc. The purpose is to provide a water surface stirring vessel.
［課題を解決するための手段］
本発明の水面撹拌船は、船体を横切る方向の軸を中心に
回転自在に取付けられ下部が水中に没入されたローター
と、前記船体の前記ロータより前方に取付けられたプラ
ンクトン増殖抑制剤散布装置とを備えたことを特徴とす
るものである。[Means for Solving the Problems] A water surface stirring vessel of the present invention includes a rotor that is rotatably mounted around an axis in a direction transverse to the hull and whose lower part is immersed in water, and a rotor that is mounted in front of the rotor of the hull. The present invention is characterized in that it is equipped with a plankton growth inhibitor spraying device.
［作 用］
ローターを回転すると、水面が撹拌されてプランクトン
の異常発生が抑えられると同時にローターの下部及び後
方に水流が発生し、船の推進力も発生する。又、上記ロ
ーターによる撹拌作用時に、ローターより前方にプラン
クトン増殖抑制剤を散布することによりプランクトン増
殖抑制剤が効率的に水中に拡散し、更に有効なプランク
トンの異常発生防止効果か得られる。[Function] When the rotor rotates, the water surface is agitated, suppressing the occurrence of abnormal plankton, and at the same time, a water flow is generated below and behind the rotor, which also generates the propulsion force for the ship. Furthermore, by spraying the plankton growth inhibitor in front of the rotor during the stirring action of the rotor, the plankton growth inhibitor is efficiently diffused into the water, and a more effective plankton abnormality prevention effect can be obtained.
［実 施 例］ 以下、本発明の実施例を、図面を参照して説明する。[Example] Embodiments of the present invention will be described below with reference to the drawings.
第１図、第２図において船体ｌの後方には支持浮体２，
３．４が一体に取付けてあって、支持浮体２，３問およ
び支持浮体３，４間には、船体ｌを横切る方向の軸５を
中心に自在に回転するロタ−６，７が支持されている。In Figures 1 and 2, a supporting floating body 2,
3.4 are integrally attached, and between the support floats 2 and 3 and the support floats 3 and 4, rotors 6 and 7 that freely rotate around an axis 5 in a direction transverse to the hull 1 are supported. ing.
支持浮体３上には、前記ローター６．７を同時或いは別
個に回転駆動するためのモータ等の回転駆動装置８．９
が備えられている。On the support floating body 3, there is a rotation drive device 8.9 such as a motor for rotating the rotor 6.7 simultaneously or separately.
is provided.
船体１上には薬品タンクＩＯが取付けてあって、硫酸銅
等のプランクトン増殖抑制剤を収容するようになってい
る。薬品タンク１０には薬注ポンプ１１が接続してあっ
て、バルブ１２を介して薬注管１３．１４がローター６
．７の前方に平行に延びている。これらの薬品タンク１
０、薬注ポンプ１１゜バルブ１２、薬注管１３．１４は
プランクトン増殖抑制剤散布装置１５を構成しており、
ローター６．７の前方の水面に、硫酸銅等のプランクト
ン増殖抑制剤を散布することができるようになっている
。A chemical tank IO is installed on the hull 1 and is adapted to contain a plankton growth inhibitor such as copper sulfate. A chemical injection pump 11 is connected to the chemical tank 10, and a chemical injection pipe 13, 14 is connected to the rotor 6 via a valve 12.
．． It extends parallel to the front of 7. These chemical tanks 1
0, chemical injection pump 11° valve 12, chemical injection pipe 13 and 14 constitute a plankton growth inhibitor spraying device 15,
Plankton growth inhibitors such as copper sulfate can be sprayed onto the water surface in front of the rotor 6.7.
支持浮体２．３．４のローター６．７よりも後方の位置
には、前記ローター６．７と平行な軸１６を中心として
、水中に没入して回動するバッフル板１７．１８か取付
けられている。バッフル板１７．１８は、電動または油
圧等の駆動装置（９により個別に回動して、湖面に対す
る角度を変化させることかできるようになっている。A baffle plate 17.18 that is immersed in the water and rotates about an axis 16 parallel to the rotor 6.7 is attached to a position behind the rotor 6.7 of the support floating body 2.3.4. ing. The baffle plates 17 and 18 can be rotated individually by electric or hydraulic drive devices (9) to change their angles with respect to the lake surface.
船体１の前部側面と支持浮体２．４の前部との間の水面
付近には、ローター６．７を湖面の浮遊物等から保護す
るため、網２０が取付けられている。A net 20 is attached near the water surface between the front side of the hull 1 and the front of the support floating body 2.4 in order to protect the rotor 6.7 from floating objects on the lake surface.
ローター６．７はオキシデーションディッチ法や、長時
間ばっ無法等の水処理設備に用いられるローターと同じ
く撹拌羽根を有するものであって、モータ等の回転駆動
装置８，９によって回転駆動されるようになっている。The rotor 6.7 has stirring blades similar to rotors used in water treatment equipment such as oxidation ditch method and long-time bath method, and is driven to rotate by rotation drive devices 8 and 9 such as motors. It has become.
従って可変速電動機や変速機を使用すれば、簡単に回転
数を変化させることかできる。ローター６．７の動力源
やバッフル板１７．１８の動力源には、地上からケーブ
ルにより給電するか、ディーゼルエンジンによる発電機
を船体ｌ内に設置するか、太陽電池使用の電源船を曳航
しながら給電を受ける等の方法による。Therefore, by using a variable speed electric motor or a transmission, the rotation speed can be easily changed. The power source for the rotor 6.7 and the baffle plate 17.18 can be powered by cables from the ground, by installing a diesel engine generator inside the hull, or by towing a solar powered power boat. Depending on the method, such as receiving power supply while
第３図に示すローター６．７の羽根の浸水深さｈを１０
０〜３００ｍｍ程度にした状態でローター６゜７を回転
すれば、任意の位置の水面を効果的に撹拌することかで
き、且つ同時にローター６．７の下方および後方に水流
が発生し、船体ｉの推進力も得ることができる。ロータ
ー６．７の羽根の浸水深さｈを大きくすると、水面の撹
拌力および船体ｌの推進力を大きくすることができる。The immersion depth h of the blades of the rotor 6.7 shown in Figure 3 is 10
If the rotor 6.7 is rotated with the distance between 0 and 300 mm, it is possible to effectively stir the water surface at any position, and at the same time, a water flow is generated below and behind the rotor 6.7, causing the hull i Propulsive force can also be obtained. By increasing the immersion depth h of the blades of the rotor 6.7, it is possible to increase the stirring force of the water surface and the propulsive force of the hull l.
ローター６．７の羽根の浸水深さｈの調整は、船体のバ
ラスト水の量を変えることによって行う。The immersion depth h of the blades of the rotor 6.7 is adjusted by changing the amount of ballast water in the hull.
第４図、第５図に示すように、バッフル板１７１８の水
面に対する角度θを変えることにより、水流の方向を変
化させて撹拌深さ及び推進力を調整することができる。As shown in FIGS. 4 and 5, by changing the angle θ of the baffle plate 1718 with respect to the water surface, the direction of the water flow can be changed and the stirring depth and driving force can be adjusted.
第４図のようにバッフル板１７，１８の水面に対する角
度θを小さくすれば、撹拌の深さは小さくなって船体ｌ
の推進力は大きくなる。一方、第５図のようにバッフル
板１３．１４の水面に対する角度θを大きくすれば、撹
拌の深さは大きく、推進力は小さくなる。As shown in Fig. 4, if the angle θ of the baffle plates 17 and 18 with respect to the water surface is made smaller, the depth of agitation becomes smaller and
The driving force will be greater. On the other hand, if the angle θ of the baffle plates 13, 14 with respect to the water surface is increased as shown in FIG. 5, the depth of stirring will be increased and the propulsive force will be decreased.
船体ｉの操舵を行うには、ローター６．７のうちの一方
を停止したり、２枚のバッフル板１７゜（８の水面に対
する角度θを互に異ならせたすする。またローターを支
持浮体２，４間にわたる長い１本のローターと゛し、バ
ッフル板１７．１８の互の角度を変えることによっての
み、船体ｌの進行方向を変えるようにすることもできる
。このような船体１の操舵は、船体ｌに乗船して操作し
たり、管理所または母船から無線操作したり、自動走行
プログラムによる無線操作によって行う。In order to steer the hull i, one of the rotors 6 and 7 must be stopped, and the angles θ of the two baffle plates 17° (8) relative to the water surface are made different from each other. It is also possible to change the direction of movement of the hull 1 only by using one long rotor spanning between 2 and 4 and changing the mutual angle of the baffle plates 17 and 18.The steering of such a hull 1 is as follows. It can be operated by boarding the ship, by radio control from the management office or the mother ship, or by radio control using an automatic driving program.
第１図に示す薬注管１３から硫酸銅等のプランクトン増
殖抑制剤を散布しながら船体ｌを推進し、ローター６．
７、バッフル板１７．１８によって水面を撹拌すると、
効率よくプランクトンの増殖を抑制することができる。The hull 1 is propelled while spraying a plankton growth inhibitor such as copper sulfate from the chemical injection pipe 13 shown in FIG. 1, and the rotor 6.
7. When the water surface is stirred by the baffle plate 17.18,
Plankton proliferation can be efficiently suppressed.
第６図に示すように支持浮体３からは、流速計を備えた
センサー２１を水面下２〜５ｍのところに吊下げ、セン
サー２１の検出した水の流速を変換器２２を介して制御
装置２３に入力するようにしている。そして測定点の流
速か不足する時は、バッフル板１７．１８の水面に対す
る角度θを大きくする。またバッフル板１７．１８の水
面に対する角度θを大きくしても流速計の検出した下方
に向かう水の流速か目標値に対して不足する場合には撹
拌力不足と判断し、ローター６．７の回転数を上昇させ
る。As shown in FIG. 6, from the support floating body 3, a sensor 21 equipped with a current meter is suspended 2 to 5 meters below the water surface, and the water flow rate detected by the sensor 21 is transmitted to a control device 22 via a converter 22. I am trying to input it into . When the flow velocity at the measurement point is insufficient, the angle θ of the baffle plate 17, 18 with respect to the water surface is increased. In addition, even if the angle θ of the baffle plate 17.18 with respect to the water surface is increased, if the downward water flow rate detected by the current meter is insufficient compared to the target value, it is determined that the stirring power is insufficient, and the rotor 6.7 is Increase rotation speed.
第１図に示した実施例においては２本のロタ−６，７を
使用しているが、ローターの数は限定されないこと、ダ
ム湖以外の種々の水面の撹拌に適用できること、その池
水発明の要旨を逸脱しない範囲内において種々変更を加
え得ることは勿論である。In the embodiment shown in Fig. 1, two rotors 6 and 7 are used, but the number of rotors is not limited, and it can be applied to stirring various water surfaces other than dam lakes. Of course, various changes may be made without departing from the spirit of the invention.
［発明の効果］
（１）本発明の撹拌船を水面上で運転することにより、
水面の水を撹拌し、プランクトンの異常発生をおさえ、
水質を改善することかできる。[Effects of the invention] (1) By operating the stirring vessel of the present invention on the water surface,
Stirs the water on the surface of the water, suppresses the abnormal occurrence of plankton,
It is possible to improve water quality.
（２） ローターにより撹拌と船体の推進とを行うた
め、推進のためだけの装置か不要となり、更に撹拌装置
としてローターを使用しているため、スクリュー等の他
の撹拌機に比べ、異物の巻込み等の支障か少なく、軸受
部等が水面上にあるため、保守か容易である。(2) Since the rotor performs agitation and propels the ship, there is no need for a device just for propulsion, and since the rotor is used as the agitation device, compared to other agitators such as screws, foreign matter is There are fewer problems such as flooding, and maintenance is easy because the bearings are above the water surface.
（３ン プランクトン増殖抑制剤散布装置を設けたこ
とによって、水面のプランクトンの増殖を更に効率よく
抑制することができる。(3) By providing a plankton growth inhibitor spraying device, the growth of plankton on the water surface can be suppressed more efficiently.
（４）バッフル板を備えると、撹拌深さや推進力の調整
を容易に行うことができ、船体の進行方向も変えられる
ので、舵を取付ける必要がない。(4) If a baffle plate is provided, the stirring depth and propulsive force can be easily adjusted, and the direction of movement of the ship can also be changed, so there is no need to install a rudder.
第１図は本発明の一実施例の平面図、第２図は第１図の
縦断側面図、第３図はローターの側面図、第４図、第５
図はバッフル板の角度の変化状態を示す側面図、第６図
はセンサーの吊下状態を示す側面図である。
図中、ｌは船体、５は軸、６，７はローター８．９は回
転駆動装置、ｌＯは薬品タンク、１１は薬注ポンプ、１
２はバルブ、１３．１４は薬注管、↓５はプランクトン
増殖抑制剤散布装置、１７．＋８はバッフル板を示す。
０FIG. 1 is a plan view of an embodiment of the present invention, FIG. 2 is a vertical sectional side view of FIG. 1, FIG. 3 is a side view of the rotor, FIGS.
The figure is a side view showing how the angle of the baffle plate changes, and FIG. 6 is a side view showing how the sensor is suspended. In the figure, l is the hull, 5 is the shaft, 6, 7 is the rotor 8.9 is the rotary drive device, 1O is the chemical tank, 11 is the chemical injection pump, 1
2 is a valve, 13.14 is a drug injection pipe, ↓5 is a plankton growth inhibitor spraying device, 17. +8 indicates a baffle plate. 0
Claims (1)
れ下部が水中に没入されたローターと、前記船体の前記
ローターより前方に取付けられたプランクトン増殖抑制
剤散布装置とを備えたことを特徴とする水面撹拌船。1) A rotor that is rotatably mounted around an axis transverse to the hull and whose lower part is immersed in water, and a plankton growth inhibitor dispersion device that is mounted on the hull in front of the rotor. A water surface stirring vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3548890A JPH0677757B2 (en) | 1990-02-16 | 1990-02-16 | Water surface stirring boat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3548890A JPH0677757B2 (en) | 1990-02-16 | 1990-02-16 | Water surface stirring boat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03238097A true JPH03238097A (en) | 1991-10-23 |
| JPH0677757B2 JPH0677757B2 (en) | 1994-10-05 |
Family
ID=12443135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3548890A Expired - Fee Related JPH0677757B2 (en) | 1990-02-16 | 1990-02-16 | Water surface stirring boat |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0677757B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0544299U (en) * | 1991-11-25 | 1993-06-15 | 収蔵 鎌田 | Water purification boat |
| CN106145378A (en) * | 2015-05-20 | 2016-11-23 | 浙江阿凡柯达环保科技有限公司 | A kind for the treatment of reaction machine and sewage water treatment method thereof |
| CN113941281A (en) * | 2021-11-10 | 2022-01-18 | 南京奥伯尔环保设备有限公司 | Submersible hyperboloid mixer |
| CN115259399A (en) * | 2022-07-27 | 2022-11-01 | 中电建建筑集团有限公司 | River channel ecological restoration device and restoration method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5814987A (en) * | 1981-07-16 | 1983-01-28 | Takeshita Masaaki | Pasteurization, flocculation and precipitation of limnetic or saltwater plankton |
| JPS5898192A (en) * | 1981-12-03 | 1983-06-10 | Ishikawajima Harima Heavy Ind Co Ltd | Aerator for deep water layer in water-reserving pool or the like |
| JPS58190334A (en) * | 1982-04-28 | 1983-11-07 | 吉岡 務 | Prevention and elimination of red tide by using mixture of alophene and humic acid such as injected substances of volcano |
| JPS63124366U (en) * | 1987-02-09 | 1988-08-12 |
-
1990
- 1990-02-16 JP JP3548890A patent/JPH0677757B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5814987A (en) * | 1981-07-16 | 1983-01-28 | Takeshita Masaaki | Pasteurization, flocculation and precipitation of limnetic or saltwater plankton |
| JPS5898192A (en) * | 1981-12-03 | 1983-06-10 | Ishikawajima Harima Heavy Ind Co Ltd | Aerator for deep water layer in water-reserving pool or the like |
| JPS58190334A (en) * | 1982-04-28 | 1983-11-07 | 吉岡 務 | Prevention and elimination of red tide by using mixture of alophene and humic acid such as injected substances of volcano |
| JPS63124366U (en) * | 1987-02-09 | 1988-08-12 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0544299U (en) * | 1991-11-25 | 1993-06-15 | 収蔵 鎌田 | Water purification boat |
| CN106145378A (en) * | 2015-05-20 | 2016-11-23 | 浙江阿凡柯达环保科技有限公司 | A kind for the treatment of reaction machine and sewage water treatment method thereof |
| CN113941281A (en) * | 2021-11-10 | 2022-01-18 | 南京奥伯尔环保设备有限公司 | Submersible hyperboloid mixer |
| CN115259399A (en) * | 2022-07-27 | 2022-11-01 | 中电建建筑集团有限公司 | River channel ecological restoration device and restoration method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0677757B2 (en) | 1994-10-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |