JPH06304596A - Intermittent water quality improving device - Google Patents
Intermittent water quality improving deviceInfo
- Publication number
- JPH06304596A JPH06304596A JP9343893A JP9343893A JPH06304596A JP H06304596 A JPH06304596 A JP H06304596A JP 9343893 A JP9343893 A JP 9343893A JP 9343893 A JP9343893 A JP 9343893A JP H06304596 A JPH06304596 A JP H06304596A
- Authority
- JP
- Japan
- Prior art keywords
- water
- tank
- open
- opening
- pipe
- 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.)
- Pending
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、水深の深い池や、湖等
の水質の改善を図るための間欠式水質改善装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intermittent water quality improving device for improving the water quality of a deep pond, a lake or the like.
【０００２】[0002]
【従来の技術】従来、水深の深い池や、湖等において
は、温度成層によって水面付近の表層に水温の高い水塊
が層をなして滞留し、アオコ等が発生して水源としての
水質が低下する問題があった。このため、湖水人工循環
法等により池や湖の水質の改善を図っている。湖水人工
循環法は、湖水中に適当深さを有するパイプによって上
向流路を形成し、パイプの下端に吹き込んだ空気のエア
リフト作用によりパイプ内に上向流を形成し、深層に滞
留する水塊を水面付近の表層に循環させることによって
表層の水塊に深層の水塊を混合してアオコ等の発生を抑
制していた。2. Description of the Related Art Conventionally, in deep ponds, lakes, etc., a water mass with a high water temperature forms a layer in the surface layer near the water surface due to temperature stratification, and water quality such as water-bloom is generated as a water source. There was a problem of decline. For this reason, the lake water artificial circulation method is being used to improve the water quality of ponds and lakes. The artificial lake circulation method uses a pipe with an appropriate depth in the lake water to form an upward flow path, and the air lift action of the air blown into the lower end of the pipe creates an upward flow in the pipe, causing water to accumulate in the deep layer. By circulating the water mass in the surface layer near the water surface, the water mass in the surface layer was mixed with the water mass in the deep layer to suppress the generation of water-blooms and the like.
【０００３】パイプ内への空気の吹き込みは間欠的に行
っており、コンプレッサーによって溜め込んだ適当量の
気塊を一度に放出していた。Air is blown into the pipe intermittently, and an appropriate amount of air mass accumulated by a compressor is discharged at one time.
【０００４】[0004]
【発明が解決しようとする課題】しかし、上記した従来
の構成においては、上向流によって深層の水塊を表層に
循環させるものであり、水温の高い表層の水塊を深層に
循環させることは困難であった。また、パイプの下端側
に空気を溜めるためのタンクを設置し、このタンクに水
上に配置したコンプレッサーによって空気を圧送する構
成となるので、深層の水中に位置するパイプの下端部に
おける構成が複雑となり、メンテナンス等に手間がかか
る問題があった。However, in the above-mentioned conventional structure, the deep water mass is circulated to the surface layer by the upward flow, and the surface water mass having a high water temperature is not circulated to the deep layer. It was difficult. Also, since a tank for storing air is installed at the lower end of the pipe, and air is sent by a compressor placed above the water to this tank, the structure at the lower end of the pipe located in deep water becomes complicated. However, there was a problem that maintenance and the like took time and effort.
【０００５】本発明は、上記課題を解決するもので、水
中に位置する機器構成を単純化するとともに、コンプレ
ッサーを不要とする間欠式水質改善装置を提供すること
を目的とする。SUMMARY OF THE INVENTION The present invention is intended to solve the above problems, and an object thereof is to provide an intermittent water quality improving device which simplifies the structure of equipment located underwater and which does not require a compressor.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するため
に、本発明の間欠式水質改善装置は、内部の設定水位が
外部の水面から適当高さに位置し下方に向けて開口する
噴出口を有した開放式タンクと、開放式タンクの噴出口
を開閉する開閉手段と、開放式タンクの噴出口に上端側
が遊嵌し下端開口が適当な水深下に開口する下向流路管
と、開放式タンク内に水面付近の表層に滞留する水塊の
水を給水管を介して供給する給水ポンプとを備えた構成
としたものである。In order to solve the above-mentioned problems, the intermittent water quality improving device of the present invention is a jet port which is set so that the set water level inside is at an appropriate height from the outside water surface and opens downward. An open-type tank having, an opening / closing means for opening and closing a jet port of the open-type tank, a downward flow pipe whose upper end side is loosely fitted to the jet port of the open-type tank and whose lower end opening is opened under a proper water depth, In the open type tank, there is provided a water supply pump for supplying water of water mass that accumulates in the surface layer near the water surface via a water supply pipe.
【０００７】また、開放式タンクを円筒状に形成し、開
放式タンクの底部の中心に噴出口を設け、開放式タンク
内における給水管の開口をタンク内周面の接線方向に向
けて形成した構成としたものである。Further, the open tank is formed in a cylindrical shape, a jet port is provided at the center of the bottom of the open tank, and the opening of the water supply pipe in the open tank is formed in the tangential direction of the inner peripheral surface of the tank. It is configured.
【０００８】また、開放式タンクおよび下向流路管を支
持するフロートを設けた構成としたものである。Further, the open type tank and the float for supporting the downward flow passage pipe are provided.
【０００９】[0009]
【作用】上記した構成により、開閉手段を閉塞した状態
で、水面付近の表層に滞留する水塊の水を給水ポンプに
より給水管を通して開放式タンクに供給し、開放式タン
ク内に設定水位まで水を満たす。そして、開閉手段を一
定時間をおいて間欠式に開放し、開閉手段の閉塞時に開
放式タンク内に滞留した水をタンク内外の水位差による
水頭によって噴出口から下向流路管内に一度に放出す
る。下向流路管内に放出した水は下向流となって降下
し、すでに下向流路管内にあった水を下端開口から適当
水深下に押し出す。With the above-mentioned structure, with the opening / closing means closed, the water in the water mass that accumulates in the surface layer near the water surface is supplied by the water supply pump to the open tank through the water supply pipe, and the water in the open tank reaches the set water level. Meet Then, the opening / closing means is opened intermittently after a certain period of time, and when the opening / closing means is closed, the water retained in the open type tank is discharged at once from the jet port into the downward flow pipe by the water head due to the water level difference inside and outside the tank. To do. The water discharged into the downward flow passage pipe becomes a downward flow and descends, and the water already inside the downward flow passage pipe is pushed out from the lower end opening to an appropriate depth.
【００１０】したがって、開閉手段の間欠的な開閉動作
によって水面付近の表層の水塊を開放式タンクおよび下
向流路管を通して順次に適当水深下に循環させることが
できる。また、下向流路管から押し出された表層の水は
周囲の深層の水塊を攪拌するとともに、深層の水に較べ
て水温が高く比重が軽いために深層の水塊を巻き込みな
がら上向流となって表層側に循環する。Therefore, the intermittent opening / closing operation of the opening / closing means allows the water mass in the surface layer near the water surface to be circulated sequentially through the open tank and the downward flow pipe to an appropriate depth. In addition, the surface water pushed out from the downward flow tube stirs the surrounding deep water mass, and because the water temperature is higher and the specific gravity is lighter than the deep water, the deep water mass is entrained while flowing upward. And circulate to the surface side.
【００１１】このため、表層と深層との間において水が
高効率で循環することとなり、温度成層の形成を防止し
て水質悪化の防止ないしは水質の改善が図られる。給水
管から開放式タンク内に供給する水はタンク内周面の接
線方向に噴出し、開放式タンク内に旋回流を生じさせ
る。この旋回流は開閉手段の流路を通過するに際して流
路が狭くなることにより流速を高められ、下向流路管内
においても旋回流となって降下する。Therefore, water circulates between the surface layer and the deep layer with high efficiency, and formation of temperature stratification is prevented to prevent deterioration of water quality or improve water quality. The water supplied from the water supply pipe into the open tank is jetted in the tangential direction of the inner peripheral surface of the tank to generate a swirling flow in the open tank. This swirling flow has a high flow velocity when it passes through the flow passage of the opening / closing means, so that the flow velocity is increased, and the swirling flow descends as a swirling flow even in the downward flow passage pipe.
【００１２】このため、下向流路管内の水も旋回流とな
って下端開口から周囲に噴出し、深層の水塊に与える攪
拌効果が高まる。開放式タンクおよび下向流路管はフロ
ートに支持されて浮遊状態にあるので、任意の位置、た
とえばアオコ等が特に多く発生している地点へ移動させ
ることにより、アオコ等を深層に送り込んで光不足によ
り光合成を減じて繁殖力を抑制して水質の改善を図るこ
とができる。For this reason, the water in the downward flow passage tube also becomes a swirling flow and is jetted to the periphery from the lower end opening to enhance the stirring effect on the deep water mass. The open tank and the downward flow tube are supported by the float and are in a floating state.Therefore, by moving them to an arbitrary position, for example, to a point where a lot of water-blooms are generated, the water-blooms are sent to the deep layer and the light is emitted. Due to the shortage, it is possible to reduce photosynthesis and suppress fertility to improve water quality.
【００１３】また、開放式タンクの周縁から水を越流さ
せれば、曝気効果を得ることができるとともに、水が溢
れ流れる様によって一種の噴水としての景観の美的向上
を図ることができる。Further, if the water overflows from the peripheral edge of the open tank, the aeration effect can be obtained, and the appearance of the fountain as a kind of fountain can be improved by overflowing the water.
【００１４】[0014]
【実施例】以下、本発明の一実施例を図面に基づいて説
明する。図１〜図３において、間欠式水質改善装置１は
湖水等の水面上に配置するものであり、主要な構成とし
て開放式タンク２と下向流路管３と給水ポンプ４を備え
ている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 3, the intermittent water quality improvement device 1 is arranged on the surface of water such as lake water, and includes an open tank 2, a downward flow pipe 3, and a water supply pump 4 as main components.
【００１５】開放式タンク２は内部の設定水位が外部の
水面から適当高さに位置するように、水面上に大部分を
露出させて配置している。開放式タンク２は円筒状をな
して底部の中心に下方に向けて開口する噴出口５を有し
ており、噴出口５には開閉手段として電磁式あるいは手
動式の開閉バルブ６を介装している。尚、開閉手段はバ
ルブに限るものではない。Most of the open tank 2 is exposed on the water surface so that the set water level inside is located at an appropriate height from the water surface outside. The open-type tank 2 has a cylindrical shape and has an ejection port 5 that opens downward at the center of the bottom, and an electromagnetic or manual on-off valve 6 is interposed at the ejection port 5 as an opening / closing means. ing. The opening / closing means is not limited to the valve.
【００１６】下向流路管３はその上端を開放式タンク２
の下部に固定して垂設したものであり、上端側において
噴出口５に遊嵌している。下向流路管３は適当長さを有
して下端が適当水深下で開口３ａしており、開口３ａは
下向流路管３の流路より小径である。尚、開口３ａの大
きさは図３に示すものに限らず、下向流路管３の下端を
全開するものでも良い。The downward flow pipe 3 has an open upper end at its upper end.
Is vertically fixed and loosely fitted to the ejection port 5 on the upper end side. The downward flow passage pipe 3 has an appropriate length, and the lower end thereof has an opening 3a at an appropriate water depth, and the opening 3a has a smaller diameter than the flow passage of the downward flow passage pipe 3. The size of the opening 3a is not limited to that shown in FIG. 3, and the lower end of the downward flow passage tube 3 may be fully opened.
【００１７】給水ポンプ４は開放式タンク２に固定した
ものであり、給水ポンプ４の吸引側に連通する吸引管７
は水面付近の表層において開口し、給水ポンプ４の吐出
側に連通する給水管８は開放式タンク２内において開口
している。尚、給水ポンプ４を水中ポンプで構成するこ
とも可能である。開放式タンク内における給水管８の開
口８ａは、開放式タンク２内に旋回流を形成するために
タンク内周面の接線方向に向いている。旋回流を形成す
る手段としては噴出口５を下向流路管３の内周面の接線
方向に向けることも考えられる。The water supply pump 4 is fixed to the open tank 2, and a suction pipe 7 communicating with the suction side of the water supply pump 4 is provided.
Is opened in the surface layer near the water surface, and the water supply pipe 8 communicating with the discharge side of the water supply pump 4 is opened in the open tank 2. The water supply pump 4 may be an underwater pump. The opening 8a of the water supply pipe 8 in the open tank is oriented tangentially to the inner peripheral surface of the tank to form a swirling flow in the open tank 2. As a means for forming the swirling flow, it is also conceivable to direct the jet port 5 in the tangential direction of the inner peripheral surface of the downward flow passage tube 3.
【００１８】開放式タンク２の周部には開放式タンク２
および下向流路管３を浮遊状態に維持するためのフロー
ト９を設けている。以下、上記構成における作用を説明
する。フロート９の浮力によって間欠式水質改善装置１
を湖水１４上に浮遊させて配置する。開閉バルブ６を閉
塞した状態で、水面付近の表層に滞留する水塊の水を給
水ポンプ４により吸引管７および給水管８を通して開放
式タンク２に供給し、開放式タンク２内に設定水位まで
水を満たす。このとき、給水管８から開放式タンク２内
に供給する水はタンク内周面の接線方向に噴出し、開放
式タンク２内に旋回流を生じさせる。The open type tank 2 is provided around the open type tank 2.
Also, a float 9 is provided to maintain the downward flow tube 3 in a floating state. The operation of the above configuration will be described below. Intermittent water quality improvement device 1 due to buoyancy of float 9
Are placed on the lake water 14 in a floating manner. With the on-off valve 6 closed, the water in the water mass staying in the surface layer near the water surface is supplied to the open type tank 2 by the water supply pump 4 through the suction pipe 7 and the water supply pipe 8 to the set water level in the open type tank 2. Fill the water. At this time, the water supplied from the water supply pipe 8 into the open tank 2 is jetted in the tangential direction of the inner peripheral surface of the tank to generate a swirling flow in the open tank 2.
【００１９】そして、開閉バルブ６を一定時間をおいて
間欠式に開放し、バルブの閉塞時に開放式タンク２内に
滞留した水をタンク内外の水位差による水頭によって噴
出口５から下向流路管３内に一度に放出する。開放式タ
ンク２内の旋回流は、噴出口５および開閉バルブ６の流
路を通過するに際して流路が狭くなることにより流速を
高められ、下向流路管３内においても旋回流となって降
下し、すでに下向流路管３内にあった水を下端の開口３
ａから適当水深下に押し出す。The opening / closing valve 6 is intermittently opened after a certain period of time, and when the valve is closed, the water retained in the open type tank 2 is flown downward from the jet port 5 by the water head due to the water level difference between the inside and the outside of the tank. Discharge into the tube 3 at once. The swirl flow in the open-type tank 2 is increased in flow velocity by narrowing the flow passage when passing through the flow passages of the ejection port 5 and the opening / closing valve 6, and also becomes a swirl flow in the downward flow passage pipe 3. Water that has descended and was already in the downward flow pipe 3 is opened at the lower end 3
Extrude from a to a suitable depth.
【００２０】このとき、下向流路管３内の水も旋回流と
なって下端の開口３ａから周囲に噴出し、深層の水塊に
与える攪拌効果が高まる。また、開口３ａにおける流路
が下向流路管３の流路に較べて小径であるので、噴出に
際して旋回流の流速が高められ、攪拌・拡散効果が促進
される。尚、旋回流を与えずに、下向流路管３内の水を
外部に排出しても良い。At this time, the water in the downward flow passage pipe 3 also becomes a swirling flow and is jetted out to the periphery from the opening 3a at the lower end to enhance the stirring effect on the deep water mass. Moreover, since the flow path in the opening 3a has a smaller diameter than the flow path of the downward flow path pipe 3, the flow velocity of the swirling flow is increased at the time of ejection, and the stirring / diffusion effect is promoted. The water in the downward flow channel pipe 3 may be discharged to the outside without giving the swirling flow.
【００２１】したがって、開閉バルブ６の間欠的な開閉
動作によって水面付近の表層の水塊が開放式タンク２お
よび下向流路管３を通して順次に適当水深下に循環す
る。また、下向流路管３から押し出された表層の水は周
囲の深層の水塊中に拡散して水塊を攪拌するとともに、
深層の水に較べて水温が高く比重が軽いために深層の水
塊を巻き込みながら上向流となって表層側に循環する。Therefore, due to the intermittent opening / closing operation of the opening / closing valve 6, the surface water mass near the water surface circulates sequentially through the open tank 2 and the downward flow pipe 3 to an appropriate depth. In addition, the water in the surface layer extruded from the downward flow pipe 3 is diffused into the surrounding deep water body to stir the water body,
Since the water temperature is higher and the specific gravity is lighter than that of the deep water, it circulates to the surface side while entraining the deep water body and forming an upward flow.
【００２２】このため、従来においては、深層から表層
への一方的な流れであったものが、表層と深層との間に
おいて水が双方向に高効率で循環することとなり、温度
成層の形成を防止して水質悪化の防止ないしは水質の改
善を図ることができる。For this reason, in the conventional case, the one-way flow from the deep layer to the surface layer circulates the water bidirectionally with high efficiency between the surface layer and the deep layer, so that the temperature stratification is formed. It is possible to prevent deterioration of water quality or improve water quality.
【００２３】さらに、開放式タンク２内の水は間欠的に
放出するので、開放式タンク２への水の供給は少流量ず
つで良く、給水ポンプ４に小型のものを用いることがで
き、動力費も安価となる。また、間欠式水質改善装置１
は、その開放式タンク２および下向流路管３をフロート
９に支持されて浮遊状態にあるので、任意の位置、たと
えばアオコ等が特に多く発生している地点へ移動させる
ことができ、アオコ等を深層に送り込んで光不足により
光合成を減じて繁殖力を抑制して水質の改善を図ること
ができる。Further, since the water in the open type tank 2 is discharged intermittently, it is sufficient to supply water to the open type tank 2 at a small flow rate, and a small water supply pump 4 can be used. The cost will be low. In addition, intermittent water quality improvement device 1
Since the open tank 2 and the downward flow passage pipe 3 are supported by the float 9 and are in a floating state, the open tank 2 and the downward flow pipe 3 can be moved to an arbitrary position, for example, a place where a lot of water-bloom and the like are particularly generated. It is possible to reduce the photosynthesis due to lack of light and suppress the fertility to improve the water quality.
【００２４】また、開放式タンク２の周縁から水を越流
させれば、曝気効果を得ることができるとともに、水が
溢れ流れる様によって景観の美的向上を図ることができ
る。さらに、図４に示すように、給水管８の途中に噴水
ノズル１１を設け、給水を上方に噴射することにより、
一種の噴水となしてさらなる景観の美的向上を図ること
ができる。Further, if the water overflows from the peripheral edge of the open tank 2, the aeration effect can be obtained, and the aesthetics of the landscape can be improved by the overflow of the water. Further, as shown in FIG. 4, by providing a fountain nozzle 11 in the middle of the water supply pipe 8 and injecting the water supply upward,
As a kind of fountain, it can further improve the aesthetics of the landscape.
【００２５】[0025]
【発明の効果】以上述べたように本発明によれば、水面
付近の表層の水塊が開放式タンクおよび下向流路管を通
して順次に適当水深下に循環し、下向流路管から押し出
された表層の水が周囲の深層の水塊を攪拌するととも
に、深層の水塊を巻き込みながら上向流となって表層側
に循環するので、表層と深層との間において水を高効率
で循環させることができ、水質悪化の防止または水質の
改善を図ることができる。As described above, according to the present invention, the water mass in the surface layer near the water surface circulates sequentially through the open tank and the downward flow pipe to an appropriate depth and is pushed out from the downward flow pipe. The water on the surface layer stirs the surrounding deep water bodies and circulates to the surface side as an upward flow while entraining the deep water bodies, so that the water is circulated between the surface and deep layers with high efficiency. It is possible to prevent deterioration of water quality or improve water quality.
【００２６】また、下向流路管を降下する水が旋回流と
なって下端開口から周囲に噴出することにより、深層の
水塊に与える攪拌効果を高めることができ、装置はフロ
ートに支持されて浮遊状態にあるので、任意の位置へ移
動させることができる。Further, the water descending through the downward flow pipe becomes a swirling flow and is jetted to the periphery from the lower end opening, whereby the stirring effect on the deep water mass can be enhanced, and the device is supported by the float. Since it is in a floating state, it can be moved to any position.
【図１】本発明の一実施例における間欠式水質改善装置
の全体断面図である。FIG. 1 is an overall cross-sectional view of an intermittent water quality improving device according to an embodiment of the present invention.
【図２】図１のＡ−Ａ矢視図である。FIG. 2 is a view on arrow AA of FIG.
【図３】図１のＢ部の拡大図である。FIG. 3 is an enlarged view of part B in FIG.
【図４】本発明の他の実施例における間欠式水質改善装
置の全体断面図である。FIG. 4 is an overall sectional view of an intermittent water quality improving device according to another embodiment of the present invention.
１ 間欠式水質改善装置 ２ 開放式タンク ３ 下向流路管 ４ 給水ポンプ ５ 噴出口 ６ 開閉バルブ ８ 給水管 ９ フロート 1 Intermittent water quality improvement device 2 Open tank 3 Downward flow pipe 4 Water supply pump 5 Jet port 6 Open / close valve 8 Water supply pipe 9 Float
Claims (3)
さに位置し下方に向けて開口する噴出口を有した開放式
タンクと、開放式タンクの噴出口を開閉する開閉手段
と、開放式タンクの噴出口に上端側が遊嵌し下端開口が
適当な水深下に開口する下向流路管と、開放式タンク内
に水面付近の表層に滞留する水塊の水を給水管を介して
供給する給水ポンプとを備えたことを特徴とする間欠式
水質改善装置。1. An open-type tank having an internal set water level at an appropriate height from an external water surface and having a jet opening that opens downward, an opening / closing means for opening and closing the jet opening of the open-type tank, and an opening The downward flow pipe with the upper end loosely fitted into the jet tank outlet and the lower end opening at an appropriate water depth, and the water in the open tank that accumulates in the surface layer near the water surface in the open tank is supplied via the water supply pipe. An intermittent water quality improving device comprising a water supply pump for supplying the water.
タンクの底部の中心に噴出口を設け、開放式タンク内に
おける給水管の開口をタンク内周面の接線方向に向けて
形成したことを特徴とする請求項１記載の間欠式水質改
善装置。2. An open-type tank is formed in a cylindrical shape, a jet port is provided at the center of the bottom of the open-type tank, and an opening of a water supply pipe in the open-type tank is formed in a tangential direction of an inner peripheral surface of the tank. The intermittent water quality improving device according to claim 1, wherein
るフロートを設けたことを特徴とする請求項１または請
求項２記載の間欠式水質改善装置。3. The intermittent water quality improving device according to claim 1, further comprising a float supporting the open tank and the downward flow pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9343893A JPH06304596A (en) | 1993-04-21 | 1993-04-21 | Intermittent water quality improving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9343893A JPH06304596A (en) | 1993-04-21 | 1993-04-21 | Intermittent water quality improving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06304596A true JPH06304596A (en) | 1994-11-01 |
Family
ID=14082329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9343893A Pending JPH06304596A (en) | 1993-04-21 | 1993-04-21 | Intermittent water quality improving device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06304596A (en) |
Cited By (3)
| 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) |
| JP2004512938A (en) * | 2000-11-06 | 2004-04-30 | キム バッキ | Apparatus and method for improving water quality of a reservoir |
| KR101502048B1 (en) * | 2014-04-09 | 2015-03-12 | 가람환경기술(주) | Purification device for river |
-
1993
- 1993-04-21 JP JP9343893A patent/JPH06304596A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004512938A (en) * | 2000-11-06 | 2004-04-30 | キム バッキ | Apparatus and method for improving water quality of a reservoir |
| 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) |
| KR101502048B1 (en) * | 2014-04-09 | 2015-03-12 | 가람환경기술(주) | Purification device for river |
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