JP2018191621A - Method for adjusting dissolved oxygen concentration - Google Patents
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Abstract
【課題】藻類などの酸素発生型光合成生物が生息する水槽を有する装置において、酸素発生型光合成生物が生息する水槽の溶存酸素濃度を夜間でも省エネルギーで調整可能な方法を提供する。【解決手段】酸素発生型光合成生物が生息する水槽を有する装置において水槽内の水の溶存酸素濃度を調整する方法であって、酸素発生型光合成生物が光合成することにより得られる高溶存酸素濃度水の一部を第１貯留槽に貯留する工程と、水槽内の水の溶存酸素濃度が低下した際に第１貯留槽から高溶存酸素濃度水を水槽に供給する工程とを含む、溶存酸素濃度の調整方法。【選択図】図１PROBLEM TO BE SOLVED: To provide a method capable of adjusting the dissolved oxygen concentration of an aquarium, in which an oxygen-generating photosynthetic organism inhabits, in the aquarium, in which an oxygen-producing photosynthetic organism such as algae inhabits, even at night with energy saving. A method for adjusting a dissolved oxygen concentration of water in an aquarium in an apparatus having a water tank in which an oxygen-producing photosynthetic organism inhabits, which is a high dissolved oxygen concentration water obtained by photosynthesis of the oxygen-producing photosynthetic organism. Dissolved oxygen concentration including a step of storing a part of the water in the first storage tank, and a step of supplying high dissolved oxygen concentration water from the first storage tank to the water tank when the dissolved oxygen concentration of water in the water tank decreases Adjustment method. [Selection diagram] Figure 1
Description
本発明は、水槽内の水の溶存酸素濃度の調整方法に関するものである。 The present invention relates to a method for adjusting the dissolved oxygen concentration of water in a water tank.
従来、水中の溶存酸素濃度を高める技術として、光合成により発生した酸素を利用する技術が知られている。 Conventionally, as a technique for increasing the dissolved oxygen concentration in water, a technique using oxygen generated by photosynthesis is known.
具体的には、例えば特許文献１では、貝の養殖システムにおいて、貝の餌としての藻類を繁殖させる繁殖容器内で光合成により発生した酸素を利用して貝の飼育水を調製することにより、貝の飼育水槽内の水の溶存酸素濃度を高め、貝の育成効率を向上させている。 Specifically, for example, in Patent Document 1, in a shell culture system, shellfish breeding water is prepared using oxygen generated by photosynthesis in a breeding container for breeding algae as shellfish feed. The concentration of dissolved oxygen in the water in the breeding tank is increased, and the growth efficiency of shellfish is improved.
しかし、藻類などの酸素発生型光合成生物（例えば、真核光合成生物、シアノバクテリア等）が生息する水槽においては、光合成生物の呼吸に酸素を必要とする。そのため、特許文献１に記載の技術には、光合成生物の呼吸により消費される酸素量の方が光合成により生成する酸素量よりも多い夜間に繁殖容器内に酸素を供給しなければ、藻類などの光合成生物が酸素不足により死滅してしまう虞があるという問題があった。 However, in an aquarium where oxygen-producing photosynthetic organisms such as algae (for example, eukaryotic photosynthetic organisms, cyanobacteria, etc.) live, oxygen is required for respiration of the photosynthetic organisms. Therefore, in the technique described in Patent Document 1, if oxygen is not supplied into the breeding container at night when the amount of oxygen consumed by respiration of photosynthetic organisms is greater than the amount of oxygen generated by photosynthesis, algae, etc. There has been a problem that photosynthetic organisms may die due to lack of oxygen.
そこで、本発明は、藻類などの酸素発生型光合成生物が生息する水槽を有する装置において、酸素発生型光合成生物が生息する水槽の溶存酸素濃度を夜間でも省エネルギーで調整可能な方法を提供することを目的とする。 Therefore, the present invention provides a method capable of adjusting the dissolved oxygen concentration of an aquarium in which oxygen-producing photosynthetic organisms inhabit an oxygen-generating photosynthetic organism such as algae with energy saving even at night. Objective.
この発明は、上記課題を有利に解決することを目的とするものであり、本発明の溶存酸素濃度の調整方法は、酸素発生型光合成生物が生息する水槽を有する装置において水槽内の水の溶存酸素濃度を調整する方法であって、前記酸素発生型光合成生物が光合成することにより得られる高溶存酸素濃度水の一部を第１貯留槽に貯留する工程と、前記水槽内の水の溶存酸素濃度が低下した際に前記第１貯留槽から前記高溶存酸素濃度水を前記水槽に供給する工程とを含むことを特徴とする。このように、光合成により得られる高溶存酸素濃度水を第１貯留槽に貯留しておき、水槽内の水の溶存酸素濃度が低下した際に高溶存酸素濃度水を水槽に供給すれば、溶存酸素濃度の低下を抑制または防止することができる。従って、例えば夜間などの光合成生物の呼吸により消費される酸素量の方が光合成により生成する酸素量よりも多い時間帯であっても、曝気や人工光の照射による光合成の必要性を低減または無くして、水槽内の水の溶存酸素濃度を省エネルギーで調整することができる。 An object of the present invention is to advantageously solve the above-described problems, and the dissolved oxygen concentration adjusting method of the present invention is a method for dissolving water in an aquarium in an apparatus having an aquarium inhabiting oxygen-generating photosynthetic organisms. A method for adjusting the oxygen concentration, the step of storing a part of highly dissolved oxygen-concentrated water obtained by photosynthesis of the oxygen-generating photosynthetic organism in a first storage tank, and the dissolved oxygen of water in the water tank And supplying the high-dissolved oxygen concentration water from the first storage tank to the water tank when the concentration is lowered. Thus, if the high dissolved oxygen concentration water obtained by photosynthesis is stored in the first storage tank, and the high dissolved oxygen concentration water is supplied to the water tank when the dissolved oxygen concentration of the water in the water tank is reduced, the dissolved water is dissolved. A decrease in oxygen concentration can be suppressed or prevented. Therefore, even when the amount of oxygen consumed by respiration of photosynthetic organisms, such as at night, is greater than the amount of oxygen generated by photosynthesis, the need for photosynthesis by aeration or artificial light irradiation is reduced or eliminated. Thus, the dissolved oxygen concentration in the water tank can be adjusted with energy saving.
ここで、本発明の溶存酸素濃度の調整方法は、前記水槽内の水の溶存酸素濃度が第一の所定値未満に低下した際に、前記水槽内の低溶存酸素濃度水を抜き出して第２貯留槽に貯留しつつ前記第１貯留槽から前記高溶存酸素濃度水を前記水槽に供給し、前記水槽内の溶存酸素濃度が前記第一の所定値よりも大きい第二の所定値超になった場合には、前記水槽内の高溶存酸素濃度水を抜き出して前記第１貯留槽に貯留しつつ前記第２貯留槽から前記低溶存酸素濃度水を前記水槽に供給することが好ましい。水槽内の水の溶存酸素濃度が第一の所定値未満に低下した場合には低溶存酸素濃度水を抜き出して第２貯留槽に貯留しつつ第１貯留槽から高溶存酸素濃度水を水槽に供給し、水槽内の水の溶存酸素濃度が第二の所定値を超えた場合には高溶存酸素濃度水を抜き出して第１貯留槽に貯留しつつ第２貯留槽から低溶存酸素濃度水を水槽に供給すれば、水槽内の水の溶存酸素濃度を省エネルギーで一定の範囲内に維持することができるからである。 Here, in the method for adjusting the dissolved oxygen concentration of the present invention, when the dissolved oxygen concentration of the water in the water tank is reduced to less than a first predetermined value, the low dissolved oxygen concentration water in the water tank is extracted and second The high dissolved oxygen concentration water is supplied from the first storage tank to the water tank while being stored in the storage tank, and the dissolved oxygen concentration in the water tank exceeds a second predetermined value larger than the first predetermined value. In this case, it is preferable that the high-dissolved oxygen concentration water in the water tank is extracted and stored in the first storage tank, and the low-dissolved oxygen concentration water is supplied from the second storage tank to the water tank. When the dissolved oxygen concentration of the water in the water tank falls below the first predetermined value, the low dissolved oxygen concentration water is extracted and stored in the second storage tank, while the high dissolved oxygen concentration water is transferred from the first storage tank to the water tank. When the dissolved oxygen concentration of the water in the water tank exceeds the second predetermined value, the low dissolved oxygen concentration water is extracted from the second storage tank while extracting the high dissolved oxygen concentration water and storing it in the first storage tank. This is because if the oxygen is supplied to the water tank, the dissolved oxygen concentration of the water in the water tank can be maintained within a certain range with energy saving.
また、本発明の溶存酸素濃度の調整方法は、前記第１貯留槽内の圧力および／または温度を調整して前記第１貯留槽に貯留した前記高溶存酸素濃度水の溶存酸素濃度の低下を抑制する工程を更に含むことが好ましい。第１貯留槽内の圧力および／または温度を調整して貯留中の高溶存酸素濃度水の溶存酸素濃度の低下を抑制すれば、第１貯留槽に貯留していた高溶存酸素濃度水を水槽に供給した際に水槽内の水の溶存酸素濃度を効率的に調整することができるからである。 Moreover, the adjustment method of the dissolved oxygen concentration of this invention adjusts the pressure and / or temperature in the said 1st storage tank, and reduces the dissolved oxygen concentration of the said high dissolved oxygen concentration water stored in the said 1st storage tank. It is preferable to further include a suppressing step. If the pressure and / or temperature in the 1st storage tank is adjusted and the fall of the dissolved oxygen concentration of the high dissolved oxygen concentration water under storage is suppressed, the high dissolved oxygen concentration water stored in the 1st storage tank will be aquarium. It is because the dissolved oxygen concentration of the water in a water tank can be adjusted efficiently when it supplies to.
更に、本発明の溶存酸素濃度の調整方法は、前記高溶存酸素濃度水をろ過した後に前記第１貯留槽に貯留することが好ましい。高溶存酸素濃度水をろ過した後に貯留すれば、水槽から抜き出された高溶存酸素濃度水中に存在する微生物等を除去し、微生物等の呼吸によって貯留中に高溶存酸素濃度水中の酸素が消費されるのを抑制することができるからである。また、水槽内から酸素発生型光合成生物が持ち出されるのを防止し、水槽内の酸素発生型光合成生物の量が低下するのを抑制することができるからである。 Further, the dissolved oxygen concentration adjusting method of the present invention is preferably stored in the first storage tank after filtering the high dissolved oxygen concentration water. If the high-dissolved oxygen concentration water is filtered and stored, microorganisms and the like present in the high-dissolved oxygen concentration water extracted from the aquarium are removed, and oxygen in the high-dissolved oxygen concentration water is consumed during storage due to respiration of the microorganisms. This is because it can be suppressed. In addition, it is possible to prevent the oxygen-generating photosynthetic organisms from being taken out of the water tank and to suppress the decrease in the amount of oxygen-generating photosynthetic organisms in the water tank.
また、本発明の溶存酸素濃度の調整方法は、前記第１貯留槽を前記水槽内に設置することが好ましい。第１貯留槽を水槽内に設置すれば、貯留中の高溶存酸素濃度水の水温の変化を抑制し、高溶存酸素濃度水を水槽に供給した際に温度変化によって酸素発生型光合成生物が悪影響を受けるのを防止することができるからである。 Moreover, it is preferable that the adjustment method of the dissolved oxygen concentration of this invention installs the said 1st storage tank in the said water tank. If the first storage tank is installed in the water tank, changes in the water temperature of the high-dissolved oxygen concentration water during storage are suppressed, and the oxygen-generating photosynthetic organisms are adversely affected by temperature changes when the high-dissolved oxygen concentration water is supplied to the water tank. It is because it can prevent receiving.
そして、本発明の溶存酸素濃度の調整方法は、前記装置が魚介類の養殖装置であり、前記水槽が餌育成槽であることが好ましい。上述した溶存酸素濃度の調整方法を使用すれば、餌育成槽における餌の育成と、魚介類の養殖とを省エネルギーで効率的に両立することができるからである。 And the adjustment method of the dissolved oxygen concentration of this invention WHEREIN: It is preferable that the said apparatus is a fish culture apparatus, and the said water tank is a bait breeding tank. This is because if the above-described method for adjusting the dissolved oxygen concentration is used, it is possible to efficiently balance the growth of food in the food breeding tank and the culture of seafood with energy saving.
本発明によれば、酸素発生型光合成生物が生息する水槽を有する装置において、酸素発生型光合成生物が生息する水槽の溶存酸素濃度を夜間でも省エネルギーで調整することができる。 ADVANTAGE OF THE INVENTION According to this invention, the dissolved oxygen density | concentration of the aquarium in which an oxygen generation type | mold photosynthetic organism inhabits can be adjusted with energy saving at night in the apparatus which has the tank in which an oxygen generation type photosynthetic organism inhabits.
以下、本発明の実施の形態を、図面に基づき詳細に説明する。
ここで、本発明の溶存酸素濃度の調整方法は、酸素発生型光合成生物が生息する水槽を有する任意の装置において酸素発生型光合成生物が生息する水槽の溶存酸素濃度を調整する際に用いることができる。具体的には、本発明の溶存酸素濃度の調整方法は、特に限定されることなく、例えば魚介類の養殖装置や排水処理装置において酸素発生型光合成生物が生息する水槽の溶存酸素濃度を調整する際に用いることができる。
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Here, the method for adjusting the dissolved oxygen concentration of the present invention is used when adjusting the dissolved oxygen concentration of the aquarium in which the oxygen-generating photosynthetic organisms inhabit in any apparatus having an aquarium in which the oxygen-generating photosynthetic organisms inhabit. it can. Specifically, the method for adjusting the dissolved oxygen concentration of the present invention is not particularly limited, and for example, adjusts the dissolved oxygen concentration of the aquarium in which the oxygen-generating photosynthetic organisms inhabit in a fish culture apparatus or a wastewater treatment apparatus. Can be used.
中でも、本発明の溶存酸素濃度の調整方法は、魚介類の養殖装置において、魚介類の餌となり得る酸素発生型光合成生物である藻類を育成する餌育成槽の溶存酸素濃度を調整する際に特に好適に用いることができる。本発明の溶存酸素濃度の調整方法を使用すれば、餌育成槽における餌の育成と、魚介類の養殖とを省エネルギーで効率的に両立することができるからである。 Among them, the method for adjusting the dissolved oxygen concentration of the present invention is particularly suitable for adjusting the dissolved oxygen concentration in a food breeding tank for growing algae, which are oxygen-generating photosynthetic organisms that can serve as food for fish and shellfish, in a seafood aquaculture device. It can be used suitably. This is because if the method for adjusting the dissolved oxygen concentration of the present invention is used, it is possible to efficiently balance the growth of food in the food breeding tank and the cultivation of seafood with energy saving.
ここで、本発明の溶存酸素濃度の調整方法は、例えば図１に示すような、酸素発生型光合成生物１１が生息する水槽１０と、酸素発生型光合成生物１１が光合成することにより得られる高溶存酸素濃度水を貯留する第１貯留槽２０と、低溶存酸素濃度水を貯留する第２貯留槽３０とを備える溶存酸素濃度調整機構において実施することができる。 Here, the method for adjusting the dissolved oxygen concentration of the present invention is, for example, as shown in FIG. 1, a highly dissolved solution obtained by photosynthesis of a water tank 10 inhabiting an oxygen-generating photosynthetic organism 11 and an oxygen-generating photosynthetic organism 11. It can implement in a dissolved oxygen concentration adjustment mechanism provided with the 1st storage tank 20 which stores oxygen concentration water, and the 2nd storage tank 30 which stores low dissolved oxygen concentration water.
なお、水槽１０内に貯留された水中に生息する酸素発生型光合成生物１１としては、特に限定されることなく、例えばシアノバクテリア（藍藻）、珪藻、黄緑藻、渦鞭毛藻、紅藻、褐藻、緑藻などの藻類が挙げられる。 The oxygen-producing photosynthetic organisms 11 that inhabit the water stored in the aquarium 10 are not particularly limited. Examples include algae such as green algae.
また、図１に示す水槽１０は、水槽１０内の水を撹拌する撹拌機１２と、水槽１０内の水の溶存酸素濃度や温度を測定するためのセンサ１３と、水槽１０内から第１貯留槽２０へと高溶存酸素濃度水を抜き出すための高溶存酸素濃度水流路１４と、水槽１０内から第２貯留槽３０へと低溶存酸素濃度水を抜き出すための低溶存酸素濃度水流路１７とを備えている。そして、高溶存酸素濃度水流路１４には、水槽１０内から抜き出された高溶存酸素濃度水をろ過するろ過器１５および水槽１０内から高溶存酸素濃度水を抜き出すためのポンプ１６が設けられている。また、低溶存酸素濃度水流路１７には、水槽１０内から低溶存酸素濃度水を抜き出すためのポンプ１８が設けられている。 1 has a stirrer 12 for stirring water in the water tank 10, a sensor 13 for measuring the dissolved oxygen concentration and temperature of the water in the water tank 10, and a first reservoir from the water tank 10. A high dissolved oxygen concentration water flow path 14 for extracting high dissolved oxygen concentration water into the tank 20, and a low dissolved oxygen concentration water flow path 17 for extracting low dissolved oxygen concentration water from the water tank 10 to the second storage tank 30; It has. The high dissolved oxygen concentration water flow path 14 is provided with a filter 15 for filtering the high dissolved oxygen concentration water extracted from the water tank 10 and a pump 16 for extracting the high dissolved oxygen concentration water from the water tank 10. ing. The low dissolved oxygen concentration water flow path 17 is provided with a pump 18 for extracting low dissolved oxygen concentration water from the water tank 10.
なお、高溶存酸素濃度水流路１４を介して高溶存酸素濃度水を引き抜く位置および低溶存酸素濃度水流路１７を介して低溶存酸素濃度水を引き抜く位置は、例えば水槽１０の中央部の水面側とすることができ、酸素発生型光合成生物１１が生息している領域の近傍とすることが好ましい。酸素発生型光合成生物１１が生息している領域の近傍から水を抜き出せば、酸素発生型光合成生物１１の光合成により生じた高溶存酸素濃度水および酸素発生型光合成生物１１の呼吸により生じた低溶存酸素濃度水を容易かつ迅速に引き抜けるからである。また、高溶存酸素濃度水流路１４および低溶存酸素濃度水流路１７は、太陽光等の光が水槽１０内に入射するのを妨げない形状であることが好ましく、例えば図１に示すように側面視が上下を逆にしたＬ字状となるように配設することができる。
また、高溶存酸素濃度水流路１４および低溶存酸素濃度水流路１７を介して引き抜かれる水の溶存酸素濃度や温度を的確に測定する観点からは、センサ１３は、高溶存酸素濃度水流路１４を介して高溶存酸素濃度水を引き抜く位置および低溶存酸素濃度水流路１７を介して低溶存酸素濃度水を引き抜く位置の近傍に設けることが好ましく、高溶存酸素濃度水流路１４を介して高溶存酸素濃度水を引き抜く位置と低溶存酸素濃度水流路１７を介して低溶存酸素濃度水を引き抜く位置との間に設けることがより好ましい。
In addition, the position where high dissolved oxygen concentration water is extracted via the high dissolved oxygen concentration water flow path 14 and the position where low dissolved oxygen concentration water is extracted via the low dissolved oxygen concentration water flow path 17 are, for example, the water surface side at the center of the water tank 10. It is preferable that the vicinity of the region where the oxygen-generating photosynthetic organism 11 is inhabited. If water is extracted from the vicinity of the region where the oxygen-generating photosynthetic organisms 11 inhabit, the water with high dissolved oxygen concentration generated by the photosynthesis of the oxygen-generating photosynthetic organisms 11 and the low solubility generated by the respiration of the oxygen-generating photosynthetic organisms 11 This is because the oxygen-concentrated water can be pulled out easily and quickly. Moreover, it is preferable that the high dissolved oxygen concentration water flow path 14 and the low dissolved oxygen concentration water flow path 17 have a shape that does not prevent light such as sunlight from entering the water tank 10, for example, as shown in FIG. It can arrange | position so that it may become the L shape which looked upside down.
In addition, from the viewpoint of accurately measuring the dissolved oxygen concentration and temperature of the water drawn through the high dissolved oxygen concentration water flow path 14 and the low dissolved oxygen concentration water flow path 17, the sensor 13 uses the high dissolved oxygen concentration water flow path 14 to Preferably, it is provided near the position where the high-dissolved oxygen concentration water is drawn and the position where the low-dissolved oxygen concentration water channel 17 is drawn, and the high-dissolved oxygen concentration water channel 14 is used. It is more preferable to provide between the position where the concentration water is extracted and the position where the low dissolved oxygen concentration water is extracted via the low dissolved oxygen concentration water flow path 17.
更に、第１貯留槽２０は、第１貯留槽２０内から水槽１０へと高溶存酸素濃度水を供給（返送）するための高溶存酸素濃度水返送流路２１と、第１貯留槽２０内の高溶存酸素濃度水の温度を測定する温度センサ２３と、第１貯留槽２０内の高溶存酸素濃度水の温度を調整するための温度調節器２４と、第１貯留槽２０内に気体を供給して第１貯留槽２０内の高溶存酸素濃度水を加圧するための加圧機構とを備えている。そして、高溶存酸素濃度水返送流路２１には、第１貯留槽２０内から高溶存酸素濃度水を抜き出すためのポンプ２２が設けられている。 Further, the first storage tank 20 includes a high dissolved oxygen concentration water return channel 21 for supplying (returning) high dissolved oxygen concentration water from the first storage tank 20 to the water tank 10, and the first storage tank 20. The temperature sensor 23 for measuring the temperature of the high-dissolved oxygen concentration water, the temperature controller 24 for adjusting the temperature of the high-dissolved oxygen concentration water in the first storage tank 20, and the gas in the first storage tank 20 A pressurizing mechanism for supplying and pressurizing the high-dissolved oxygen concentration water in the first storage tank 20. The high-dissolved oxygen concentration water return channel 21 is provided with a pump 22 for extracting high-dissolved oxygen concentration water from the first storage tank 20.
また、第２貯留槽３０は、第２貯留槽３０内から水槽１０へと低溶存酸素濃度水を供給（返送）するための低溶存酸素濃度水返送流路３１を備えている。そして、低溶存酸素濃度水返送流路３１には、第２貯留槽３０内から低溶存酸素濃度水を抜き出すためのポンプ３２が設けられている。 The second storage tank 30 includes a low-dissolved oxygen concentration water return flow path 31 for supplying (returning) low-dissolved oxygen concentration water from the second storage tank 30 to the water tank 10. The low dissolved oxygen concentration water return channel 31 is provided with a pump 32 for extracting low dissolved oxygen concentration water from the second storage tank 30.
なお、高溶存酸素濃度水返送流路２１を介して高溶存酸素濃度水を返送する位置および低溶存酸素濃度水返送流路３１を介して低溶存酸素濃度水を返送する位置は、例えば水槽１０の中央部の底面側とすることができ、撹拌機１２の近傍とすることが好ましい。撹拌機１２の近傍に水を返送すれば、高溶存酸素濃度水または低溶存酸素濃度水を返送した際に水槽１０内の溶存酸素濃度が局所的に上昇または低下するのを抑制することができるからである。 The position where the high dissolved oxygen concentration water is returned via the high dissolved oxygen concentration water return flow path 21 and the position where the low dissolved oxygen concentration water is returned via the low dissolved oxygen concentration water return flow path 31 are, for example, the tank 10. It is possible to be on the bottom side of the central portion of the, and preferably in the vicinity of the stirrer 12. If water is returned to the vicinity of the stirrer 12, it can suppress that the dissolved oxygen concentration in the water tank 10 raises or falls locally when high dissolved oxygen concentration water or low dissolved oxygen concentration water is returned. Because.
そして、上述したような構成を有する溶存酸素濃度調整機構において実施する本発明の溶存酸素濃度の調整方法では、水槽１０内の酸素発生型光合成生物１１が光合成することにより得られる高溶存酸素濃度水の一部を第１貯留槽２０に貯留する工程と、水槽１０内の水の溶存酸素濃度が低下した際に第１貯留槽２０から高溶存酸素濃度水を水槽１０に供給する工程とを実施することを必要とする。
具体的には、本発明の溶存酸素濃度の調整方法では、水槽１０内の酸素発生型光合成生物１１が光合成することにより水槽１０内の水の溶存酸素濃度が所定の値よりも大きくなった場合には、ポンプ１６を駆動し、高溶存酸素濃度水流路１４を介して水槽１０内の高溶存酸素濃度水を第１貯留槽２０へと引き抜く。また、例えば夜間などの光合成が行われない期間に酸素発生型光合成生物１１の呼吸によって水槽１０内の水の溶存酸素濃度が所定の値よりも小さくなった場合には、ポンプ２２を駆動し、高溶存酸素濃度水返送流路２１を介して第１貯留槽２０内の高溶存酸素濃度水を水槽１０へと返送することにより、水槽１０内の溶存酸素濃度の低下を抑制または防止する。なお、高溶存酸素濃度水の抜き出しは、水槽１０内の水の溶存酸素濃度が所定の値以下まで低下した場合に停止することができる。また、高溶存酸素濃度水の供給は、水槽１０内の水の溶存酸素濃度が所定の値以上まで上昇した場合に停止することができる。
And in the dissolved oxygen concentration adjustment method of this invention implemented in the dissolved oxygen concentration adjustment mechanism which has the above-mentioned structure, the high dissolved oxygen concentration water obtained when the oxygen generation type | formula photosynthetic organism 11 in the water tank 10 carries out photosynthesis. A step of storing a part of the water in the first storage tank 20 and a step of supplying high dissolved oxygen concentration water from the first storage tank 20 to the water tank 10 when the dissolved oxygen concentration of the water in the water tank 10 decreases. You need to do.
Specifically, in the method for adjusting the dissolved oxygen concentration of the present invention, when the oxygen-producing photosynthetic organism 11 in the water tank 10 performs photosynthesis, the dissolved oxygen concentration of water in the water tank 10 becomes larger than a predetermined value. For this, the pump 16 is driven, and the high-dissolved oxygen concentration water in the water tank 10 is extracted to the first storage tank 20 through the high-dissolved oxygen concentration water flow path 14. Further, when the dissolved oxygen concentration of water in the aquarium 10 becomes smaller than a predetermined value due to respiration of the oxygen-generating photosynthetic organism 11 during a period in which photosynthesis is not performed, for example, at night, the pump 22 is driven, By returning the high dissolved oxygen concentration water in the first storage tank 20 to the water tank 10 via the high dissolved oxygen concentration water return flow path 21, the decrease in the dissolved oxygen concentration in the water tank 10 is suppressed or prevented. In addition, extraction of high dissolved oxygen concentration water can be stopped when the dissolved oxygen concentration of the water in the water tank 10 falls below a predetermined value. Further, the supply of the high-dissolved oxygen concentration water can be stopped when the dissolved oxygen concentration of the water in the water tank 10 rises to a predetermined value or more.
このように、昼間等の光合成により高溶存酸素濃度水が得られる期間に高溶存酸素濃度水を第１貯留槽２０に貯留しておき、夜間などの水槽１０内の水の溶存酸素濃度が低下する期間に高溶存酸素濃度水を水槽１０に供給すれば、水槽１０内の溶存酸素濃度の低下を抑制または防止することができる。従って、例えば夜間などの光合成生物の呼吸により消費される酸素量の方が光合成により生成する酸素量よりも多い時間帯であっても、曝気や人工光の照射による光合成の必要性を低減または無くして、水槽１０内の水の溶存酸素濃度を省エネルギーで調整することができる。 Thus, the high dissolved oxygen concentration water is stored in the 1st storage tank 20 in the period when high dissolved oxygen concentration water is obtained by photosynthesis, such as daytime, and the dissolved oxygen concentration of the water in the water tank 10 at night etc. falls. If high-dissolved oxygen concentration water is supplied to the water tank 10 during this period, the decrease in the dissolved oxygen concentration in the water tank 10 can be suppressed or prevented. Therefore, even when the amount of oxygen consumed by respiration of photosynthetic organisms, such as at night, is greater than the amount of oxygen generated by photosynthesis, the need for photosynthesis by aeration or artificial light irradiation is reduced or eliminated. Thus, the dissolved oxygen concentration of the water in the water tank 10 can be adjusted with energy saving.
なお、本発明の溶存酸素濃度の調整方法において、高溶存酸素濃度水の引き抜きを行う溶存酸素濃度の「所定の値」は、夜間の酸素の消費速度などに応じて適宜に設定することができ、例えばセンサ１３で測定した水温および図示しない気圧計で測定した気圧から求められる最大溶存酸素濃度（飽和濃度）とすることができる。また、高溶存酸素濃度水の返送を行う溶存酸素濃度の「所定の値」は、酸素発生型光合成生物１１の種類および量などに応じて適宜に設定することができ、例えば６ｍｇ−Ｏ2／Ｌ−Ｈ2Ｏとすることができる。 In the method for adjusting the dissolved oxygen concentration of the present invention, the “predetermined value” of the dissolved oxygen concentration at which the high-dissolved oxygen concentration water is extracted can be appropriately set according to the nighttime oxygen consumption rate and the like. For example, the maximum dissolved oxygen concentration (saturated concentration) obtained from the water temperature measured by the sensor 13 and the atmospheric pressure measured by a barometer (not shown) can be used. In addition, the “predetermined value” of the dissolved oxygen concentration at which the high-dissolved oxygen concentration water is returned can be appropriately set according to the type and amount of the oxygen-producing photosynthetic organism 11, for example, 6 mg-O 2 / it can be an L-H 2 O.
また、本発明の溶存酸素濃度の調整方法では、任意に、水槽１０内の水の溶存酸素濃度を一定の範囲内に維持したい場合には、第２貯留槽３０を利用し、以下のようにして溶存酸素濃度を調整してもよい。
即ち、本発明の溶存酸素濃度の調整方法では、水槽１０内の水の溶存酸素濃度が第一の所定値未満に低下した場合には、低溶存酸素濃度水流路１７およびポンプ１８を利用して水槽１０内の低溶存酸素濃度水を抜き出して第２貯留槽３０に貯留しつつ高溶存酸素濃度水返送流路２１およびポンプ２２を利用して第１貯留槽２０から高溶存酸素濃度水を水槽に供給し、水槽１０内の溶存酸素濃度が第一の所定値よりも大きい第二の所定値超になった場合には、高溶存酸素濃度水流路１４およびポンプ１６を利用して水槽１０内の高溶存酸素濃度水を抜き出して第１貯留槽２０に貯留しつつ低溶存酸素濃度水返送流路３１およびポンプ３２を利用して第２貯留槽３０から低溶存酸素濃度水を水槽１０に供給してもよい。なお、低溶存酸素濃度水の抜き出しおよび高溶存酸素濃度水の供給は、水槽１０内の水の溶存酸素濃度が第一の所定値以上まで上昇した場合に停止すればよい。また、高溶存酸素濃度水の抜き出しおよび低溶存酸素濃度水の供給は、水槽１０内の水の溶存酸素濃度が第二の所定値以下まで低下した場合に停止すればよい。
Further, in the method for adjusting the dissolved oxygen concentration of the present invention, when it is desired to arbitrarily maintain the dissolved oxygen concentration of the water in the water tank 10, the second storage tank 30 is used as follows. The dissolved oxygen concentration may be adjusted.
That is, in the method for adjusting the dissolved oxygen concentration of the present invention, when the dissolved oxygen concentration of the water in the water tank 10 is reduced below the first predetermined value, the low dissolved oxygen concentration water flow path 17 and the pump 18 are used. The high dissolved oxygen concentration water is extracted from the first storage tank 20 using the high dissolved oxygen concentration water return flow path 21 and the pump 22 while extracting the low dissolved oxygen concentration water in the water tank 10 and storing it in the second storage tank 30. When the dissolved oxygen concentration in the water tank 10 exceeds a second predetermined value that is larger than the first predetermined value, the high dissolved oxygen concentration water flow path 14 and the pump 16 are used to enter the water tank 10. The high-dissolved oxygen concentration water is extracted and stored in the first storage tank 20, and the low-dissolved oxygen concentration water return flow path 31 and the pump 32 are used to supply low-dissolved oxygen concentration water from the second storage tank 30 to the water tank 10. May be. The extraction of the low dissolved oxygen concentration water and the supply of the high dissolved oxygen concentration water may be stopped when the dissolved oxygen concentration of the water in the water tank 10 rises to the first predetermined value or more. Further, the extraction of the high-dissolved oxygen concentration water and the supply of the low-dissolved oxygen concentration water may be stopped when the dissolved oxygen concentration of the water in the water tank 10 is lowered to the second predetermined value or less.
このように、水槽１０内の水の溶存酸素濃度が第一の所定値未満に低下した場合には低溶存酸素濃度水を抜き出して第２貯留槽３０に貯留しつつ第１貯留槽２０から高溶存酸素濃度水を水槽１０に供給すれば、水槽１０内の水の溶存酸素濃度を省エネルギーで速やかに上昇させることができる。また、水槽１０内の水の溶存酸素濃度が第二の所定値を超えた場合には高溶存酸素濃度水を抜き出して第１貯留槽２０に貯留しつつ第２貯留槽３０から低溶存酸素濃度水を水槽１０に供給すれば、水槽１０内の水の溶存酸素濃度を省エネルギーで速やかに低下させることができる。従って、水槽１０内の水の溶存酸素濃度を省エネルギーで一定の範囲内に維持することができる。
因みに、図１に示す溶存酸素濃度調整機構では、高溶存酸素濃度水返送流路２１を介して高溶存酸素濃度水を返送する位置および低溶存酸素濃度水返送流路３１を介して低溶存酸素濃度水を返送する位置を撹拌機１２の近傍としており、撹拌により均一化された後の溶存酸素濃度をセンサ１３で測定しているので、上述した溶存酸素濃度の調整を良好に行うことができる。
Thus, when the dissolved oxygen concentration of the water in the water tank 10 falls below the first predetermined value, the low dissolved oxygen concentration water is extracted and stored in the second storage tank 30 while being stored in the second storage tank 20. If dissolved oxygen concentration water is supplied to the water tank 10, the dissolved oxygen concentration of the water in the water tank 10 can be rapidly raised with energy saving. Further, when the dissolved oxygen concentration of the water in the water tank 10 exceeds the second predetermined value, the low dissolved oxygen concentration is extracted from the second storage tank 30 while extracting the high dissolved oxygen concentration water and storing it in the first storage tank 20. If water is supplied to the water tank 10, the dissolved oxygen concentration of the water in the water tank 10 can be rapidly reduced with energy saving. Therefore, the dissolved oxygen concentration of the water in the water tank 10 can be maintained within a certain range with energy saving.
Incidentally, in the dissolved oxygen concentration adjusting mechanism shown in FIG. 1, the position where high dissolved oxygen concentration water is returned via the high dissolved oxygen concentration water return channel 21 and the low dissolved oxygen concentration via the low dissolved oxygen concentration water return channel 31. Since the position where the concentrated water is returned is in the vicinity of the stirrer 12 and the dissolved oxygen concentration after being homogenized by stirring is measured by the sensor 13, the above-described dissolved oxygen concentration can be adjusted satisfactorily. .
なお、本発明の溶存酸素濃度の調整方法において、「第一の所定値」は、酸素発生型光合成生物１１の種類および量などに応じて適宜に設定することができ、例えば６ｍｇ−Ｏ2／Ｌ−Ｈ2Ｏとすることができる。また、「第二の所定値」は、夜間の酸素の消費速度などに応じて適宜に設定することができ、例えばセンサ１３で測定した水温および図示しない気圧計で測定した気圧から求められる最大溶存酸素濃度（飽和濃度）とすることができる。 In the method for adjusting the dissolved oxygen concentration of the present invention, the “first predetermined value” can be appropriately set according to the type and amount of the oxygen-generating photosynthetic organism 11, for example, 6 mg-O 2 / it can be an L-H 2 O. In addition, the “second predetermined value” can be appropriately set according to the oxygen consumption rate at night, for example, the maximum dissolved concentration obtained from the water temperature measured by the sensor 13 and the atmospheric pressure measured by a barometer not shown. The oxygen concentration (saturation concentration) can be set.
そして、図１に示すような溶存酸素濃度調整機構において上述した溶存酸素濃度の調整方法を実施する際には、第１貯留槽２０内の圧力および／または温度を監視しておき、必要に応じて第１貯留槽２０内の圧力および／または温度を調整して第１貯留槽２０に貯留した高溶存酸素濃度水の溶存酸素濃度の低下を抑制してもよい。
具体的には、温度センサ２３および温度調節器２４を用いた第１貯留槽２０内の高溶存酸素濃度水の温度の調節、並びに／或いは、加圧機構を介した第１貯留槽２０内への気体（例えば、空気などの酸素含有気体）の吹き込みによる第１貯留槽２０内の圧力の調節を行うことにより、高溶存酸素濃度水の溶存酸素濃度が貯留中に低下するのを抑制することが好ましい。貯留中の高溶存酸素濃度水の溶存酸素濃度の低下を抑制すれば、第１貯留槽２０に貯留していた高溶存酸素濃度水を水槽１０に供給した際に水槽１０内の水の溶存酸素濃度を効率的に調整することができる。
And when implementing the adjustment method of the dissolved oxygen concentration mentioned above in the dissolved oxygen concentration adjustment mechanism as shown in FIG. 1, the pressure and / or temperature in the 1st storage tank 20 are monitored, and if needed Then, the pressure and / or temperature in the first storage tank 20 may be adjusted to suppress a decrease in the dissolved oxygen concentration of the high-dissolved oxygen concentration water stored in the first storage tank 20.
Specifically, the temperature of the high-concentration oxygen concentration water in the first storage tank 20 using the temperature sensor 23 and the temperature controller 24 and / or the first storage tank 20 through a pressurizing mechanism. By controlling the pressure in the first storage tank 20 by blowing a gas (for example, an oxygen-containing gas such as air), the dissolved oxygen concentration of the high-dissolved oxygen-concentrated water is suppressed from decreasing during storage. Is preferred. If the decrease in the dissolved oxygen concentration of the high-dissolved oxygen concentration water during storage is suppressed, the dissolved oxygen concentration of the water in the water tank 10 when the high-dissolved oxygen concentration water stored in the first storage tank 20 is supplied to the water tank 10. The concentration can be adjusted efficiently.
また、図１に示すような溶存酸素濃度調整機構において上述した溶存酸素濃度の調整方法を実施する際には、高溶存酸素濃度水をろ過器１５でろ過した後に第１貯留槽２０に貯留することが好ましい。高溶存酸素濃度水をろ過器１５でろ過した後に第１貯留槽２０に貯留すれば、水槽１０から抜き出された高溶存酸素濃度水中に存在する、酸素発生型光合成生物１１を含む微生物等をろ過により除去することができる。従って、微生物等の呼吸によって貯留中に高溶存酸素濃度水中の酸素が消費されるのを抑制することができる。また、ろ過器１５においてろ過された微生物等を既知の手段を用いて水槽１０内へと返送すれば、水槽１０内から酸素発生型光合成生物１１が持ち出されるのを防止し、水槽１０内の酸素発生型光合成生物１１の量が低下するのを抑制することができる。
ここで、ろ過器１５としては、微生物等を良好に捕捉可能であれば、公知のろ過器（例えば、セラミック膜などのろ過膜を用いたろ過器）の中から適宜選択したものを用いることができる。
Further, when the above-described method for adjusting the dissolved oxygen concentration is performed in the dissolved oxygen concentration adjusting mechanism as shown in FIG. 1, the high dissolved oxygen concentration water is filtered by the filter 15 and then stored in the first storage tank 20. It is preferable. If high-dissolved oxygen concentration water is filtered through the filter 15 and then stored in the first storage tank 20, microorganisms including the oxygen-generating photosynthetic organisms 11 existing in the high-dissolved oxygen concentration water extracted from the water tank 10. It can be removed by filtration. Therefore, it is possible to suppress consumption of oxygen in the high-dissolved oxygen concentration water during storage due to respiration of microorganisms or the like. Moreover, if the microorganisms filtered in the filter 15 are returned to the water tank 10 using known means, the oxygen-generating photosynthetic organism 11 is prevented from being taken out of the water tank 10, and the oxygen in the water tank 10 is It can suppress that the quantity of the generation | occurrence | production type photosynthesis organisms 11 falls.
Here, as the filter 15, a filter appropriately selected from known filters (for example, a filter using a filter membrane such as a ceramic membrane) may be used as long as microorganisms can be captured well. it can.
なお、図１では、第１貯留槽２０および第２貯留槽３０が水槽１０の外部に設けられている場合を示したが、第１貯留槽２０および／または第２貯留槽３０は、水槽１０内に設けられていてもよい。具体的には、第１貯留槽２０および／または第２貯留槽３０は、水槽１０内の水中に浸漬されていてもよい。第１貯留槽２０および／または第２貯留槽３０を水槽１０内に設ければ、高溶存酸素濃度水や低溶存酸素濃度水の水温が貯留中に変化するのを抑制し、水槽１０に返送した際の温度変化によって酸素発生型光合成生物１１が悪影響を受けるのを防止することができる。 Although FIG. 1 shows the case where the first storage tank 20 and the second storage tank 30 are provided outside the water tank 10, the first storage tank 20 and / or the second storage tank 30 is the water tank 10. It may be provided inside. Specifically, the first storage tank 20 and / or the second storage tank 30 may be immersed in water in the water tank 10. If the 1st storage tank 20 and / or the 2nd storage tank 30 are provided in the water tank 10, it will suppress that the water temperature of high dissolved oxygen concentration water and low dissolved oxygen concentration water changes during storage, and will return to the water tank 10. It is possible to prevent the oxygen-generating photosynthetic organism 11 from being adversely affected by the temperature change at the time.
また、図１に示す溶存酸素濃度調整機構では、水槽１０内に曝気機構は設けられていないが、水槽１０内には、補助的に曝気を行うための曝気機構が設けられていてもよい。 Further, in the dissolved oxygen concentration adjusting mechanism shown in FIG. 1, the aeration mechanism is not provided in the water tank 10, but an aeration mechanism for auxiliary aeration may be provided in the water tank 10.
そして、上述したような溶存酸素濃度調整機構を用いた本発明の溶存酸素濃度の調整方法は、例えば魚介類の養殖装置や排水処理装置において酸素発生型光合成生物が生息する水槽の溶存酸素濃度を調整する際に用いることができる。 And the adjustment method of the dissolved oxygen concentration of the present invention using the dissolved oxygen concentration adjusting mechanism as described above is, for example, the dissolved oxygen concentration of the aquarium where the oxygen-producing photosynthetic organisms inhabit in the aquaculture device or the wastewater treatment device. It can be used when adjusting.
具体的には、本発明の溶存酸素濃度の調整方法は、例えば図２に示すような魚介類の陸上養殖装置１００において用いることができる。
なお、図２では、図１と同様の構成を有する部材の一部については符号を省略している。
Specifically, the method for adjusting the dissolved oxygen concentration of the present invention can be used in, for example, a seafood terrestrial aquaculture apparatus 100 as shown in FIG.
In FIG. 2, reference numerals are omitted for some members having the same configuration as in FIG. 1.
ここで、図２に示す陸上養殖装置１００は、昆布等の藻類を餌としてウニなどの魚介類を陸上で養殖する装置である。また、陸上養殖装置１００は、海水の素などを用いて魚介類の飼育に用いる水の水質（例えば、ｐＨや塩分濃度等）を調整する調整槽５０と、魚介類を飼育する養殖槽６０と、魚介類の餌（酸素発生型光合成生物である、昆布等の藻類）を育成する餌育成槽としての水槽１０、第１貯留槽２０および第３貯留槽３０を備える溶存酸素濃度調整機構と、残滓を除去するためのろ過槽７０とを備えている。 Here, the land culture apparatus 100 shown in FIG. 2 is an apparatus for culturing seafood such as sea urchins on land using algae such as kelp as a bait. The aquaculture apparatus 100 includes an adjustment tank 50 that adjusts the water quality (for example, pH, salinity concentration, etc.) of water used for breeding seafood using seawater elements, and a culture tank 60 that breeds seafood. A dissolved oxygen concentration adjusting mechanism comprising a water tank 10, a first storage tank 20, and a third storage tank 30 as a food breeding tank for growing fish food (algae such as kelp, which is an oxygen-generating photosynthetic organism); And a filtration tank 70 for removing residue.
そして、陸上養殖装置１００では、調整槽５０において水質を調整した水および餌育成槽としての水槽１０で育成した餌を養殖槽６０へと供給し、ウニ等の魚介類を養殖する。また、養殖槽６０において魚介類の養殖に用いた水を水槽１０へと供給し、餌の育成に用いると共に、上述した本発明の溶存酸素濃度の調整方法を用いて水の溶存酸素濃度を調整する。更に、水槽１０から流出した水をろ過槽７０でろ過してから調整槽５０へと返送することにより、水を魚介類の養殖に再利用する。 And in the land culture apparatus 100, the water which adjusted the water quality in the adjustment tank 50, and the food raised in the water tank 10 as a food breeding tank are supplied to the culture tank 60, and seafood, such as a sea urchin, is cultured. In addition, the water used for the cultivation of seafood in the aquaculture tank 60 is supplied to the aquarium 10 and used for growing the bait, and the dissolved oxygen concentration of the water is adjusted using the above-described method for adjusting the dissolved oxygen concentration of the present invention. To do. Further, the water flowing out of the water tank 10 is filtered by the filtration tank 70 and then returned to the adjustment tank 50, whereby the water is reused for the cultivation of seafood.
なお、陸上養殖装置１００では、任意に、第１貯留槽２０に貯留した高溶存酸素濃度水を養殖槽６０へと流路２５を介して供給して養殖槽６０の溶存酸素濃度を調整してもよい。 In the onshore aquaculture device 100, the dissolved oxygen concentration in the aquaculture tank 60 is adjusted by arbitrarily supplying the high-dissolved oxygen concentration water stored in the first storage tank 20 to the aquaculture tank 60 through the flow path 25. Also good.
そして、陸上養殖装置１００では、餌育成槽としての水槽１０の水の溶存酸素濃度を上述した本発明の溶存酸素濃度の調整方法を用いて調整しているので、例えば多量の（光合成が行われない夜間に酸素不足が生じるような量の）藻類を餌として水槽１０内で飼育している場合等であっても、酸素不足等によって餌が死滅してしまうのを省エネルギーで防止することができる。 And in the land culture apparatus 100, since the dissolved oxygen concentration of the water of the water tank 10 as a feed breeding tank is adjusted using the adjustment method of the dissolved oxygen concentration of the present invention mentioned above, for example, a large amount (photosynthesis is performed. Even when algae (of such an amount that oxygen deficiency occurs at night) is fed in the aquarium 10 as food, it is possible to prevent energy from being lost due to lack of oxygen or the like. .
また、本発明の溶存酸素濃度の調整方法を用いた排水処理装置としては、例えば図１に示す溶存酸素濃度調整機構の水槽１０内に好気性微生物を存在させ、酸素発生型光合成生物の光合成により生じた酸素と任意の曝気とを利用して排水の好気処理を行うもの等が挙げられる。
なお、水槽１０内に好気性微生物を存在させる場合には、酸素発生型光合成生物の光合成が阻害されないように、好気性微生物を担体に担持したり、遮蔽板を用いたりして、好気性微生物が酸素発生型光合成生物に付着するのを抑制することが好ましい。
Moreover, as a waste water treatment apparatus using the dissolved oxygen concentration adjusting method of the present invention, for example, an aerobic microorganism is present in the water tank 10 of the dissolved oxygen concentration adjusting mechanism shown in FIG. The thing which performs the aerobic treatment of waste_water | drain using the produced oxygen and arbitrary aeration etc. is mentioned.
In the case where aerobic microorganisms are present in the water tank 10, the aerobic microorganisms are supported on the carrier or using a shielding plate so that the photosynthesis of the oxygen-generating photosynthesis organisms is not inhibited. It is preferable to suppress the adhesion of oxygen to the oxygen-generating photosynthetic organism.
本発明の溶存酸素濃度の調整方法によれば、酸素発生型光合成生物が生息する水槽を有する装置において、酸素発生型光合成生物が生息する水槽の溶存酸素濃度を夜間でも省エネルギーで調整することができる。 According to the method for adjusting dissolved oxygen concentration of the present invention, in an apparatus having a water tank inhabiting oxygen-generating photosynthetic organisms, the dissolved oxygen concentration in the water tank inhabiting oxygen-generating photosynthetic organisms can be adjusted with energy saving even at night. .
１０ 水槽
１１ 酸素発生型光合成生物
１２ 撹拌機
１３ センサ
１４ 高溶存酸素濃度水流路
１５ ろ過器
１６ ポンプ
１７ 低溶存酸素濃度水流路
２０ 第１貯留槽
２１ 高溶存酸素濃度水返送流路
２２ ポンプ
２３ 温度センサ
２４ 温度調節器
２５ 流路
３０ 第２貯留槽
３１ 低溶存酸素濃度水返送流路
３２ ポンプ
５０ 調整槽
６０ 養殖槽
７０ ろ過槽
１００ 陸上養殖装置
DESCRIPTION OF SYMBOLS 10 Water tank 11 Oxygen generation type | formula photosynthetic organism 12 Stirrer 13 Sensor 14 High dissolved oxygen concentration water flow path 15 Filter 16 Pump 17 Low dissolved oxygen concentration water flow path 20 1st storage tank 21 High dissolved oxygen concentration water return flow path 22 Pump 23 Temperature Sensor 24 Temperature controller 25 Flow path 30 Second storage tank 31 Low dissolved oxygen concentration water return flow path 32 Pump 50 Adjustment tank 60 Culture tank 70 Filtration tank 100 Onshore culture device
Claims (6)
前記酸素発生型光合成生物が光合成することにより得られる高溶存酸素濃度水の一部を第１貯留槽に貯留する工程と、
前記水槽内の水の溶存酸素濃度が低下した際に前記第１貯留槽から前記高溶存酸素濃度水を前記水槽に供給する工程と、
を含む、溶存酸素濃度の調整方法。 A method for adjusting the dissolved oxygen concentration of water in an aquarium in an apparatus having an aquarium inhabited by an oxygen-generating photosynthetic organism,
Storing a part of highly dissolved oxygen-concentrated water obtained by photosynthesis of the oxygen-generating photosynthetic organism in a first storage tank;
Supplying the high-dissolved oxygen concentration water from the first storage tank to the water tank when the dissolved oxygen concentration of water in the water tank decreases;
Method for adjusting dissolved oxygen concentration.
前記水槽内の溶存酸素濃度が前記第一の所定値よりも大きい第二の所定値超になった場合には、前記水槽内の高溶存酸素濃度水を抜き出して前記第１貯留槽に貯留しつつ前記第２貯留槽から前記低溶存酸素濃度水を前記水槽に供給する、請求項１に記載の溶存酸素濃度の調整方法。 When the dissolved oxygen concentration of the water in the water tank falls below a first predetermined value, the low dissolved oxygen concentration water in the water tank is extracted and stored in the second storage tank while being stored in the second storage tank. Supply dissolved oxygen concentration water to the water tank,
When the dissolved oxygen concentration in the water tank exceeds a second predetermined value larger than the first predetermined value, the high dissolved oxygen concentration water in the water tank is extracted and stored in the first storage tank. The method for adjusting the dissolved oxygen concentration according to claim 1, wherein the low-dissolved oxygen concentration water is supplied from the second storage tank to the water tank.
前記水槽が餌育成槽である、請求項１〜５の何れかに記載の溶存酸素濃度の調整方法。 The device is a fish culture device;
The method for adjusting a dissolved oxygen concentration according to any one of claims 1 to 5, wherein the water tank is a food breeding tank.
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