JPH05336861A - Device for purifying water - Google Patents

Device for purifying water

Info

Publication number
JPH05336861A
JPH05336861A JP4149156A JP14915692A JPH05336861A JP H05336861 A JPH05336861 A JP H05336861A JP 4149156 A JP4149156 A JP 4149156A JP 14915692 A JP14915692 A JP 14915692A JP H05336861 A JPH05336861 A JP H05336861A
Authority
JP
Japan
Prior art keywords
air
water
air supply
supply means
supplying
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
Application number
JP4149156A
Other languages
Japanese (ja)
Inventor
Masao Noguchi
昌男 野口
Ikuo Kobayashi
郁夫 小林
Yutaka Takahashi
豊 高橋
Masanari Hatsutori
正業 服部
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP4149156A priority Critical patent/JPH05336861A/en
Publication of JPH05336861A publication Critical patent/JPH05336861A/en
Pending legal-status Critical Current

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Landscapes

  • Farming Of Fish And Shellfish (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

PURPOSE:To maintain the purification performance of the device and simultaneously prevent the death of fishes due to oxygen deficiency by effectively multiplying microorganisms in a microorganism culture tank for maintaining the purification performance of the device, and operating an auxiliary air-supplying means for the lowering in the performance of an air-supplying means inserted into a circulation flow route in response to a signal from an air flow detecting means to supply air (oxygen). CONSTITUTION:The device comprises a water press-supplying means 3 and a microorganism culture tank 5 successively installed in a forced circulation flow route for circulating water in a tank, an air supply means 4 for sucking and supplying air with the fluid energy of the circulation flow for supplying air in the microorganism culture tank 5, an optically air flow-detecting means 10 arranged in the air inflow route of the air-supplying means 4, and an auxiliary air-supplying means 11 for forcibly supplying air into the air supplying means 4 when receiving the output of an air shortage signal from the air flow-detecting means 10.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は水浄化用水槽の水や、魚
飼育用水槽の水の汚れを浄化する水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 water purifying device for purifying water in a water purifying aquarium or water in a fish breeding aquarium.

【0002】[0002]

【従来の技術】一般に、貯水槽、人工池、プール等にお
いては、外部からの混入物により生ずる有機物による汚
染があり、この浄化が大きな課題であった。
2. Description of the Related Art Generally, water tanks, artificial ponds, pools, and the like are contaminated by organic substances generated by external contaminants, and their purification has been a major problem.

【0003】又、観賞魚用水槽においては、水槽中の水
は魚の排泄物と食残しの餌の分解等が原因でアンモニア
や汚れの発生、病原菌の繁殖による汚染などの課題があ
る。さらに、アンモニア等の窒素化合物が分解する過程
で発生する亜硝酸や硝酸による汚染も大きな課題であっ
た。
Further, in the aquarium for aquarium fish, the water in the aquarium has problems such as generation of ammonia and stains due to decomposition of fish excrement and food left over from food, and contamination by propagation of pathogenic bacteria. Furthermore, pollution by nitrous acid and nitric acid generated in the process of decomposing nitrogen compounds such as ammonia was also a big problem.

【0004】従来この種の水浄化装置は図4に示すよう
に、水槽25の水を水圧送手段26によって循環させる
強制循環流路に鉱物質からなる浄化モジュール27と、
浄化モジュール27の上流側に好気性菌を効果的に繁殖
させ浄化性能を高めるため、および魚の生育に必要な酸
素を供給するためのイジェクター効果を用いた空気供給
手段28を設けており、空気取入口29を水槽の水面よ
り高い位置に設けた構成としている。このため上記水浄
化装置は、ゴミや汚れによりイジェクター効果の性能が
低下し水が空気取入口29に向かって逆流しても外部へ
流れ出ない(例えば特開平4−99429号公報)。
As shown in FIG. 4, a conventional water purification apparatus of this type includes a purification module 27 made of a mineral substance in a forced circulation passage for circulating water in a water tank 25 by a water pressure feeding means 26.
On the upstream side of the purification module 27, air supply means 28 using an ejector effect for effectively propagating aerobic bacteria to enhance purification performance and for supplying oxygen necessary for fish growth is provided. The inlet 29 is provided at a position higher than the water surface of the water tank. Therefore, in the above water purifier, the performance of the ejector effect is deteriorated due to dust and dirt, and water does not flow out to the outside even when the water flows backward toward the air intake 29 (for example, Japanese Patent Laid-Open No. 4-99429).

【0005】[0005]

【発明が解決しようとする課題】しかしながら上記従来
の構成では、ゴミや汚れによりイジェクター効果が下が
り、空気供給手段の性能が低下した場合、酸素の供給が
停止し浄化性能が低下して、さらに酸欠により魚が死ぬ
という課題があった。
However, in the above-mentioned conventional structure, when the ejector effect is reduced due to dust or dirt and the performance of the air supply means is deteriorated, the supply of oxygen is stopped and the purification performance is deteriorated. There was a problem that the fish would die due to the lack.

【0006】本発明は上記課題を解決するもので、空気
供給手段の性能低下を検知し補助空気供給手段により酸
素の補給を行い浄化性能を維持し、酸欠による魚の死を
防ぐことを目的としたものである。
The present invention is intended to solve the above problems, and an object thereof is to detect deterioration of the performance of air supply means, supplement oxygen with auxiliary air supply means to maintain purification performance, and prevent death of fish due to oxygen deficiency. It was done.

【0007】[0007]

【課題を解決するための手段】上記課題を解決するため
に本発明の水浄化装置は、水槽の水を循環させる強制循
環流路に設けた水圧送手段と、この水圧送手段から送ら
れてきた水槽の水を浄化するための微生物培養槽と、こ
の微生物培養槽へ空気を送る循環流の流体エネルギーに
より空気を誘引供給する空気供給手段と、前記空気供給
手段の空気流入路に配設した空気流検知手段および補助
空気供給手段と、前記空気流検知手段からの信号により
前記補助空気供給手段の作動を制御する制御手段からな
り、前記空気流検知手段は、前記補助空気供給手段に接
続される空気流入口、前記空気供給手段に接続される空
気流出口とを有した容器と、この容器内に可動自在に設
けた水の比重より軽いフロートと、前記容器の両側壁
に、相対向して配設した発光体と光センサよりなり、循
環流路の循環流量が低下し、容器内が水で満たされた
際、前記フロートにより発光体と光センサ間を遮断し、
前記補助空気供給手段を駆動する構成とした。
In order to solve the above-mentioned problems, the water purifying apparatus of the present invention is provided with a water pressure feeding means provided in a forced circulation passage for circulating water in a water tank, and is fed from this water pressure feeding means. A microorganism culturing tank for purifying the water in the aquarium, an air supplying means for attracting and supplying air by the fluid energy of a circulating flow for sending air to the microbial culturing tank, and an air inflow path of the air supplying means are provided. The air flow detection means and the auxiliary air supply means, and the control means for controlling the operation of the auxiliary air supply means by a signal from the air flow detection means, the air flow detection means being connected to the auxiliary air supply means. A container having an air inlet and an air outlet connected to the air supply means, a float lighter than the specific gravity of water provided movably in the container, and opposite side walls of the container. Arranged Emitters and consists optical sensor, circulating flow in the circulation flow path is decreased, when the container is filled with water, and cut off between the light emitter and the light sensor by said float,
The auxiliary air supply means is driven.

【0008】[0008]

【作用】本発明は上記構成によれば、水槽中の有害物質
は水圧送手段により空気供給手段をへて微生物培養槽へ
と送られる。送られた有害物質は空気供給手段で循環流
の流体エネルギーにより誘引され噴流部で微細化された
空気と共に微生物培養槽へ入る。微生物培養槽へ入った
有害物質は好気性菌の働きにより酸化分解され除去され
る。
According to the present invention, the harmful substance in the water tank is sent to the microorganism culture tank by the water pressure feeding means through the air supply means. The sent harmful substance is attracted by the fluid energy of the circulation flow by the air supply means and enters the microorganism culture tank together with the air atomized in the jet part. The harmful substances that enter the microorganism culture tank are oxidatively decomposed and removed by the action of aerobic bacteria.

【0009】ゴミや汚れにより水の循環能力が低下して
空気供給手段から空気流入路に水が逆流すると、空気流
検知手段から発した信号により補助空気供給手段を作動
させ、不足する空気を補給する。
When the circulating ability of water decreases due to dust or dirt and the water flows backward from the air supply means to the air inflow path, the auxiliary air supply means is operated by the signal emitted from the air flow detection means to replenish the insufficient air. To do.

【0010】[0010]

【実施例】以下、本発明の実施例を図面にもとづいて説
明する。
Embodiments of the present invention will now be described with reference to the drawings.

【0011】図1から図3において、1は水槽、2は水
浄化装置であり、水圧送手段である循環ポンプ3、循環
流の流体エネルギーにより空気を誘引するイジェクター
作用により外部空気を流水中に導入する空気供給手段
4、空気供給手段の下流に鉱物質からなる微生物固定床
が封入された微生物培養槽5、更に下流にヒータ6、紫
外線ランプ7が取り付けられた加熱殺菌ユニット8が配
設され浄化循環回路を構成している。
In FIGS. 1 to 3, 1 is a water tank, 2 is a water purifying device, a circulation pump 3 which is a water pressure feeding means, and an external air is introduced into running water by an ejector action for attracting air by the fluid energy of the circulating flow. An air supply means 4 to be introduced, a microorganism culture tank 5 in which a fixed bed of microorganisms made of a mineral is enclosed downstream of the air supply means, and a heater 6 and a heat sterilization unit 8 to which a UV lamp 7 is attached are disposed further downstream. It constitutes a purification circulation circuit.

【0012】空気供給手段4の空気流入路9には空気流
検知手段10、補助空気供給手段であるエアーポンプ1
1がシリアルに挿入されている。12は水槽1と水浄化
装置2とを分離する電磁弁である。13は漏水を検知す
る漏水センサである。制御手段14には、循環ポンプ
3、ヒータ6、紫外線ランプ7、エアーポンプ11、電
磁弁12、漏水センサ13及び、空気流検知手段10の
中に配設した光検出手段21、22が結線されている。
15はフィルターユニットで循環水中の大きな固形物を
除去する。
An air flow detecting means 10 is provided in an air inflow passage 9 of the air supplying means 4, and an air pump 1 which is an auxiliary air supplying means.
1 is serially inserted. Reference numeral 12 is a solenoid valve that separates the water tank 1 and the water purification device 2. Reference numeral 13 is a water leakage sensor for detecting water leakage. The control means 14 is connected to the circulation pump 3, the heater 6, the ultraviolet lamp 7, the air pump 11, the electromagnetic valve 12, the water leak sensor 13, and the light detection means 21 and 22 arranged in the air flow detection means 10. ing.
A filter unit 15 removes large solid matters in the circulating water.

【0013】微生物培養槽5には好気性微生物が培養さ
れている。微生物固定床として高炉水砕を原料としたサ
ドルロック型セラミックスを用いている。この高炉水砕
は製鉄所から溶鉄1.0トン当たり約0.5トン発生するス
ラッグを急冷して製造され、主にセメントの原料や土壌
改良材として使用されるものである。高炉水砕は多孔質
のガラス質でCaO、SiO2 、Al2 3 を主成分と
し、この他MgO、FeOなどを含んでいる。
Aerobic microorganisms are cultured in the microorganism culture tank 5. Saddle lock type ceramics made from granulated blast furnace is used as a fixed bed of microorganisms. This granulated blast furnace is produced by rapidly cooling slag generated from iron mills at about 0.5 ton per 1.0 ton of molten iron, and is mainly used as a raw material for cement and a soil conditioner. Granulated blast furnace is a porous glassy material containing CaO, SiO 2 , and Al 2 O 3 as main components, and also contains MgO, FeO and the like.

【0014】図2(a),(b)は空気回路部である空
気流検知手段10の実施例を示し、16は水受容器で空
気の流入口17、流出口18を有した水受容器内部に水
以下の比重で非透過性のボール19が可動自在に封入さ
れている。流出口18の水受容器側開口部20には空気
流路を形成する溝が設けてある。水受容器16の両側壁
に相対向して発光体21と光センサー22とが配設され
ている。
2 (a) and 2 (b) show an embodiment of the air flow detecting means 10 which is an air circuit part, and 16 is a water receiver having an air inlet 17 and an air outlet 18. An impermeable ball 19 having a specific gravity of water or less is movably enclosed inside. A groove that forms an air flow path is provided in the water receiver side opening 20 of the outflow port 18. A light-emitting body 21 and an optical sensor 22 are arranged on both side walls of the water receiver 16 so as to face each other.

【0015】図3は空気流検知手段10の制御系統図で
ある。電子回路23は空気流検知手段10を構成する発
光体21および光センサー22からの信号により制御手
段14の回路部へ駆動信号を出す。この電子回路23か
ら発せられる駆動信号により双方向性3端子サイリスタ
24が作動し、補助空気供給手段11を可動する。
FIG. 3 is a control system diagram of the air flow detecting means 10. The electronic circuit 23 outputs a drive signal to the circuit section of the control means 14 in response to signals from the light emitter 21 and the optical sensor 22 which form the air flow detection means 10. The bidirectional three-terminal thyristor 24 is actuated by the drive signal generated from the electronic circuit 23, and the auxiliary air supply means 11 is moved.

【0016】上記構成において、制御手段14のスイッ
チを入れると電磁弁12が作動して開の状態となり循環
ポンプ3が運転を開始する。水槽1内の水は、電磁弁1
2、循環ポンプ3、空気供給手段4、微生物培養槽5、
加熱殺菌ユニット8を通って水槽1内へ戻る。
In the above structure, when the control means 14 is turned on, the solenoid valve 12 is actuated to open and the circulation pump 3 starts operating. The water in the aquarium 1 is the solenoid valve 1
2, circulation pump 3, air supply means 4, microorganism culture tank 5,
Return to the water tank 1 through the heat sterilization unit 8.

【0017】この循環系において、水槽1中の魚の排泄
物や食べ残しの餌などの有機物、及び有機物から発生す
るアンモニアや硝酸塩を含んだ水槽水は、鉱物質固定床
の表面に最初から付着している人工的に培養された好気
性微生物、およびそれらの活性化物質と、循環水中に吸
引された空気中に含まれる酸素とにより酸化分解され硝
酸塩になる。このアンモニアの硝酸塩への酸化分解反応
は次に示す反応式で表される。
In this circulatory system, organic matter such as fish excrement and uneaten food in the aquarium 1, and aquarium water containing ammonia and nitrates generated from the organic matter adhere to the surface of the fixed mineral bed from the beginning. The artificially cultivated aerobic microorganisms and their activators and oxygen contained in the air drawn into the circulating water oxidize and decompose to nitrate. This oxidative decomposition reaction of ammonia into nitrate is represented by the following reaction formula.

【0018】 NH4 + +1.5 O2 →NO2 - +H2 O+H+ ・・・ NO2 - +0.5 O2 →NO3 ・・・ このようにして水槽1中の魚の排泄物や食べ残しの餌な
どの有機物、及び有機物から発生するアンモニアや硝酸
塩に酸化され無害となり水槽水は浄化される。
NH 4 + +1.5 O 2 → NO 2 + H 2 O + H + ... NO 2 +0.5 O 2 → NO 3 ... In this way, fish excrement and leftover food in the aquarium 1 It becomes harmless by being oxidized to organic substances such as bait and ammonia and nitrates generated from organic substances, and the aquarium water is purified.

【0019】運転が正常の場合は、空気供給手段4はイ
ジェクター作用により空気を吸い込む。空気は空気流検
知手段10の流入口17から流出口18へと流れ、容器
内は空気で満たされた状態となる。この時、ボール19
は図2(a)の如く水受容器16の底部に位置している
ため、光センサー22は受光状態となる。この受光状態
は空気供給手段4が正常に作動しているとの信号になっ
て電子回路23に送られる。
When the operation is normal, the air supply means 4 sucks air by the ejector action. Air flows from the inflow port 17 of the air flow detecting means 10 to the outflow port 18, and the inside of the container is filled with air. At this time, the ball 19
2 is located at the bottom of the water receiver 16 as shown in FIG. 2A, the optical sensor 22 is in the light receiving state. This light receiving state becomes a signal that the air supply means 4 is operating normally and is sent to the electronic circuit 23.

【0020】次に、循環流量が低下した場合、噴流の流
速が下がり空気供給手段4のイジェクター作用が低下し
て、空気供給手段4の空気流入口9から水が逆流する。
水が水受容器16に流入すると、ボール19は図2
(b)の如く浮上し発光体21と光センサー22間を遮
蔽し、光センサー22は非受光状態となる。この非受光
状態は空気供給手段4での空気の吸い込みが停止したと
の信号になって電子回路23に送られる。この信号によ
り双方向性3端子サイリスタ24を操作しエアーポンプ
11を作動させる。このエアーポンプ11から送られる
空気は空気流検知手段10を通り空気供給手段9内に圧
送され不足する空気を補給する。
Next, when the circulation flow rate decreases, the flow velocity of the jet flow decreases, the ejector action of the air supply means 4 decreases, and water flows backward from the air inlet 9 of the air supply means 4.
When the water flows into the water receiver 16, the ball 19 is moved to the position shown in FIG.
As shown in (b), it floats and shields between the light emitting body 21 and the optical sensor 22, and the optical sensor 22 is in a non-light receiving state. This non-light receiving state is sent to the electronic circuit 23 as a signal that the suction of air by the air supply means 4 has stopped. This signal operates the bidirectional three-terminal thyristor 24 to operate the air pump 11. The air sent from the air pump 11 passes through the air flow detecting means 10 and is sent under pressure into the air supply means 9 to replenish the deficient air.

【0021】以上により、ゴミや汚れにより循環流量が
下がりイジェクター作用が低下した場合でもエアーポン
プ11による空気補給により、浄化性能を保持し魚を生
かすという効果がある。
As described above, even if the circulation flow rate is lowered due to dust or dirt and the ejector action is reduced, the air pump 11 can replenish the air to maintain the purifying performance and keep the fish alive.

【0022】[0022]

【発明の効果】以上説明したように本発明の水浄化装置
によれば次の効果が得られる。 (1)微生物を用いた浄化方法であると共に、微生物培
養槽および魚への空気補給が循環流の流体エネルギーに
よる空気誘引する無可動構成であるため、長期間性能を
保持することができる。 (2)水の循環能力が下がり微生物培養槽および魚への
空気の供給量が低下した場合、空気流検知手段からの信
号により、補助空気供給手段が動作して不足する空気を
補給するので水の浄化性能が保持され魚を生かす事がで
きる。
As described above, according to the water purifying apparatus of the present invention, the following effects can be obtained. (1) Since the method is a purification method using microorganisms, and the air supply to the microorganism culture tank and the fish is a non-movable structure that attracts air by the fluid energy of the circulating flow, the performance can be maintained for a long time. (2) When the circulation capacity of water is reduced and the amount of air supplied to the microbial culture tank and the fish is reduced, the auxiliary air supply means operates by the signal from the air flow detection means to supply the insufficient air, so The purification performance of is preserved and the fish can be used effectively.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例における水浄化装置の構成断
面図
FIG. 1 is a sectional view showing the configuration of a water purification device according to an embodiment of the present invention.

【図2】図1の空気回路部である空気供給手段、空気流
検出手段、補助空気供給手段の断面図
FIG. 2 is a cross-sectional view of an air supply unit, an air flow detection unit, and an auxiliary air supply unit that are the air circuit unit of FIG.

【図3】空気流検出手段を制御する制御回路図FIG. 3 is a control circuit diagram for controlling the air flow detection means.

【図4】従来例の水浄化装置の断面図FIG. 4 is a sectional view of a conventional water purification device.

【符号の説明】[Explanation of symbols]

1 水槽 3 水圧送手段 4 空気供給手段 5 微生物培養槽 10 空気流検知手段 11 補助空気供給手段 1 Water Tank 3 Water Pressure Feeding Means 4 Air Supply Means 5 Microbial Culture Tank 10 Air Flow Detection Means 11 Auxiliary Air Supply Means

フロントページの続き (72)発明者 服部 正業 大阪府門真市大字門真1006番地 松下電器 産業株式会社内Front page continuation (72) Inventor Masato Hattori, 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】水槽の水を循環させる強制循環流路に設け
た水圧送手段と、この水圧送手段から送られてきた水槽
の水を浄化するための微生物培養槽と、この微生物培養
槽へ空気を送る循環流の流体エネルギーにより空気を誘
引供給する空気供給手段と、前記空気供給手段の空気流
入路に配設した空気流検知手段および補助空気供給手段
と、前記空気流検知手段からの信号により前記補助空気
供給手段の作動を制御する制御手段からなり、前記空気
流検知手段は、前記補助空気供給手段に接続される空気
流入口、前記空気供給手段に接続される空気流出口とを
有した容器と、この容器内に可動自在に設けた水の比重
より軽いフロートと、前記容器の両側壁に、相対向して
配設した発光体と光センサよりなり、前記循環流路の循
環流量が低下し、前記容器内が水で満たされた際、前記
フロートにより発光体と光センサ間を遮断し、前記補助
空気供給手段を駆動する構成とした水浄化装置。
1. A water pressure feeding means provided in a forced circulation flow path for circulating water in a water tank, a microbial culture tank for purifying water in the water tank sent from the water pressure feeding means, and a microbial culture tank. Air supply means for attracting and supplying air by the fluid energy of the circulating flow for sending air, air flow detection means and auxiliary air supply means arranged in the air inflow path of the air supply means, and signals from the air flow detection means Control means for controlling the operation of the auxiliary air supply means, and the air flow detection means has an air inlet connected to the auxiliary air supply means and an air outlet connected to the air supply means. A container, a float lighter than the specific gravity of water provided movably in the container, a light-emitting body and an optical sensor that are disposed opposite to each other on both side walls of the container. Is reduced, When serial vessel was filled with water, and cut off between the light emitter and the light sensor by said float, said auxiliary air supply means for driving structure and the water purification device.
JP4149156A 1992-06-09 1992-06-09 Device for purifying water Pending JPH05336861A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4149156A JPH05336861A (en) 1992-06-09 1992-06-09 Device for purifying water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4149156A JPH05336861A (en) 1992-06-09 1992-06-09 Device for purifying water

Publications (1)

Publication Number Publication Date
JPH05336861A true JPH05336861A (en) 1993-12-21

Family

ID=15469019

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4149156A Pending JPH05336861A (en) 1992-06-09 1992-06-09 Device for purifying water

Country Status (1)

Country Link
JP (1) JPH05336861A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030074852A (en) * 2002-03-14 2003-09-22 변무원 Apparatus For Purifying Waste Water in Fish Farm
CN112335602A (en) * 2020-11-03 2021-02-09 安徽省农业科学院水产研究所 Pond engineering circulating water high-efficiency automatic sewage suction device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030074852A (en) * 2002-03-14 2003-09-22 변무원 Apparatus For Purifying Waste Water in Fish Farm
CN112335602A (en) * 2020-11-03 2021-02-09 安徽省农业科学院水产研究所 Pond engineering circulating water high-efficiency automatic sewage suction device

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