JP5971456B2 - Farming method - Google Patents

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JP5971456B2
JP5971456B2 JP2012020314A JP2012020314A JP5971456B2 JP 5971456 B2 JP5971456 B2 JP 5971456B2 JP 2012020314 A JP2012020314 A JP 2012020314A JP 2012020314 A JP2012020314 A JP 2012020314A JP 5971456 B2 JP5971456 B2 JP 5971456B2
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shellfish
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aquaculture
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JP2013158251A (en
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山口 典生
典生 山口
礼子 有冨
礼子 有冨
清水 巧治
巧治 清水
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パナソニックIpマネジメント株式会社
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    • 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
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81Aquaculture, e.g. of fish
    • 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
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/80Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
    • Y02P60/87Re-use of by-products of food processing for fodder production

Description

本発明は電子部品製造工場から排出する排ガスを利用した魚介類の養殖方法であり、特にカキ、ホタテ貝、アコヤ貝、シロチョウ貝、クロチョウ貝、アオヤギ、トコブシ及びアワビの稚貝の成長を著しく促進させることができる養殖方法に関するものである。   The present invention is a method for cultivating seafood using exhaust gas discharged from an electronic component manufacturing factory, and particularly promotes the growth of oysters, scallops, pearl oysters, white butterflies, black scallops, blue goats, tocobushi and abalone larvae. The present invention relates to an aquaculture method that can be performed.
カキ、ホタテ貝、アコヤ貝、シロチョウ貝、クロチョウ貝、アオヤギ、トコブシ及びアワビの稚貝養殖では、これらの貝を網製の養殖用篭等の中に入れて海中に吊るしている。養殖用篭は稚貝の大きさによって網目のサイズを任意に選定することができる。   In oysters, scallops, pearl oysters, white butterflies, black scallops, blue goats, flying squirrels and abalone larvae, these shells are suspended in the sea by being placed in a netting cage or the like. The size of the mesh can be arbitrarily selected according to the size of the larvae.
たとえば、ホタテ貝では、養殖をしてから販売できる大きさに成長するまでの期間は2年から3年かかり、その期間中の成長する貝の大きさによって、網目のサイズを大きくした養殖用篭に取り替えたり、篭の中の貝の数量を減らしたりしている。   For example, in the case of scallops, it takes 2 to 3 years to grow to a size that can be sold after aquaculture. The size of the mesh is increased depending on the size of the growing shellfish during that period. The number of shellfish in the cage is reduced.
また、海中での養殖時に篭に海草や浮遊ゴミが付着することが多いため、潮の通りがよく、且つ、貝への栄養分が充分確保できる場所で養殖筏を組むが、篭に海草や浮遊ゴミが付着することは完全に避けられない為、その場合も篭を取り替えている。   In addition, seagrass and floating debris are often attached to the coral during aquaculture, so the aquaculture coral is constructed in a place where the tide is good and sufficient nutrients for the shellfish are secured. Since it is completely unavoidable that trash is attached, the bag is also replaced.
養殖用篭の取り替え期間は設置場所にもよるが、1ヶ月から12ヶ月程度であり、養殖する稚貝が小さい時は成長が著しいため、この取り替え期間も短い。   The replacement period of the aquaculture trough depends on the place of installation, but it is about 1 to 12 months, and when the young shellfish to be cultivated is small, the replacement period is short.
このような背景のなかで、養殖する貝を入れる養殖用篭の内部または外部に海草を植生したり、海草をシートに植生させて、海草の光合成の作用で発生する酸素を養殖用篭内の貝に供給して酸欠防止を図ることが知られている(特許文献1)。   Against this background, vegetation is cultivated inside or outside the aquaculture cages that contain the shellfish to be cultivated, or the seaweeds are vegetated on sheets, and oxygen generated by the action of seagrass photosynthesis is contained in the aquaculture culm. It is known to prevent lack of oxygen by supplying it to shellfish (Patent Document 1).
また、地上にて飼育水槽を用いて、その水槽の遮光率を80%から100%になるように遮光するとともに、海水を稚貝の生育に適した温度調整をして酸素を供給し、水槽内の溶存酸素量9mg/l〜15mg/lの範囲とする方法が知られている(特許文献2)。   In addition, using a breeding tank on the ground, the tank is shielded from light so that the shading rate of the tank is 80% to 100%, and the seawater is adjusted to a temperature suitable for the growth of juveniles and oxygen is supplied. There is known a method of adjusting the amount of dissolved oxygen in the range of 9 mg / l to 15 mg / l (Patent Document 2).
特開平7−194270号JP-A-7-194270 特開2007−190014号JP2007-190014
近年、地球温暖化に伴い、熱帯性及び亜熱帯性の微生物や貝類が沿岸に住み着き、従来から日本近海に生息するカキ、ホタテ貝、アコヤ貝、シロチョウ貝、クロチョウ貝、アオヤギ、トコブシ及びアワビの稚貝の成長を阻害している。   In recent years, with the global warming, tropical and subtropical microorganisms and shellfish have settled on the coast, and oysters, scallops, pearl oysters, white butterflies, black scallops, blue goats, lionfish and abalone juveniles that have traditionally lived in the waters near Japan. It inhibits the growth of shellfish.
理由は、海水温度の上昇により、熱帯性及び亜熱帯性の微生物や貝類が沿岸に住み着き、これらの微生物や貝類が多く繁殖して、酸素消費を行う為に酸素欠乏状態となるためである。   The reason for this is that tropical and subtropical microorganisms and shellfish settle on the coast due to the rise in seawater temperature, and these microorganisms and shellfish multiply and become oxygen-deficient in order to consume oxygen.
また、河川等から海洋への流入に際して、水質汚濁防止法、都道府県の条例で排出規制があり、浄化された水が汽水域に流れ、栄養分が乏しくなっている。   In addition, when water flows into the ocean from rivers, etc., the Water Pollution Control Law and prefectural regulations have emission regulations, and purified water flows into brackish water areas, resulting in poor nutrients.
また海洋においては、海洋表層水の溶存酸素は稚貝の成長に充分の酸素(3mg/l以上)があるが、太陽光の影響により、熱帯性及び亜熱帯性の微生物が活性繁殖し結局、酸素不足に陥る。   In the ocean, dissolved oxygen in the surface water of the ocean has sufficient oxygen (3 mg / l or more) for the growth of juveniles, but tropical and subtropical microorganisms are actively propagated under the influence of sunlight and eventually oxygen I run into a shortage.
海洋に深層部では無機質等のミネラル成分は豊富にあるが溶存酸素量が低い場所であり、この場所での稚貝の養殖は不向きであり、魚介類の稚魚及び稚貝の餌となる藻類等の植物プランクトンが充分に光合成できないため大量に繁殖できる環境ではなく、前記植物プランクトンの存在が少ないためにその植物プランクトンを捕食する動物プランクトンの存在が少なく、稚魚の養殖には不向きである。   In the deep ocean, minerals such as minerals are abundant, but the dissolved oxygen amount is low, and culture of juvenile shellfish is not suitable in this place. This phytoplankton is not suitable for aquaculture of fry, because it is not an environment where it can reproduce in large quantities because it cannot sufficiently synthesize phytoplankton, and because there is little phytoplankton, the presence of zooplankton that prey on the phytoplankton is small.
また、稚魚又は稚貝の成長には昼夜を問わず酸素を供給が必要であり、その酸素供給の費用と成長した貝の出荷価格で採算性が合わない為である。   In addition, it is necessary to supply oxygen regardless of day or night for growth of fry or larvae, and the profitability does not match with the cost of supplying oxygen and the shipping price of the grown shellfish.
特許文献1は、海草と稚貝をほぼ同一の場所に設置して、海草の光合成の作用で発生する酸素を養殖用篭内の貝に供給して酸欠防止を図るものであるが、海洋の深層では、太陽光の透過量が低く、海草の光合成による酸素の発生を期待できなく、少ない溶存酸素を海草が消費してしまい、稚貝の成長に必要な酸素量が充分に供給できない。   In Patent Document 1, seagrass and juvenile shellfish are installed in almost the same place, and oxygen generated by the action of photosynthesis of seagrass is supplied to the shellfish in the cultivation cage to prevent oxygen deficiency. In the deep layer, the amount of transmitted sunlight is low, the generation of oxygen by seagrass photosynthesis cannot be expected, the seaweed consumes a small amount of dissolved oxygen, and the oxygen amount necessary for the growth of juveniles cannot be supplied sufficiently.
また、稚貝の貝殻の成長に必要なカルシウム成分については海水や植物プランクトンからの摂取であり、稚貝の成長促進を強制して実施していない。   In addition, calcium components necessary for growth of juvenile shells are ingested from seawater and phytoplankton and are not enforced by promoting the growth of juvenile shellfish.
また、特許文献2は、地上にて飼育水槽を用いて、その水槽の遮光率を80%から100%になるように遮光するとともに、海水を稚貝の生育に適した温度調整をして酸素を供給し、水槽内の溶存酸素量9mg/l〜15mg/lの範囲とする方法であり、その設備が大きくなり設備が複雑化しコストもかかる。   Patent Document 2 uses a breeding aquarium on the ground to shield the aquarium from a light shielding rate of 80% to 100%, and adjust the temperature of seawater to be suitable for growth of juveniles and oxygen. The amount of dissolved oxygen in the water tank is in the range of 9 mg / l to 15 mg / l, and the equipment becomes large, making the equipment complicated and costly.
また、海洋の自然条件化での稚貝の養殖ではなく、自然界の微量なミネラル分を成長する稚貝が摂取することが困難の為、成長した貝は完全に人工の貝となり、自然界の貝との食感や風味も異なる。   In addition, it is difficult to ingest larvae that grow a small amount of minerals in nature, rather than aquaculture of larvae under natural conditions in the ocean. The texture and flavor are different.
本発明は上記課題に鑑みて想到されたものであり、電子部品製造工場で使用される窒素ガス製造装置からの排出する排ガス(酸素濃度約30%の酸素富化ガス)、蒸気ボイラから排気する二酸化炭素ガス、純水製造のRO膜からでる濃縮水に含まれるカルシウム成分、工場の食堂から排出する有機排水等の廃棄物を、稚貝の成長促進用物質として夫々を配管により海底に供給することで、稚魚又は稚貝に対して自然界でストレスを極力抑えながら、成長に必要且つ、充分な溶存酸素等の成長促進用物質を供給できる稚貝の養殖方法を提供するものである。   The present invention has been conceived in view of the above problems, and exhaust gas discharged from a nitrogen gas manufacturing apparatus used in an electronic component manufacturing factory (oxygen-enriched gas having an oxygen concentration of about 30%) is exhausted from a steam boiler. Carbon dioxide gas, calcium components contained in the concentrated water from the RO membrane of pure water production, and organic wastewater discharged from the factory cafeteria, etc., are supplied to the bottom of the sea by piping as substances for promoting growth of juvenile shellfish. Thus, the present invention provides a method for cultivating larvae or larvae that can supply a growth-promoting substance such as dissolved oxygen that is necessary and sufficient for growth while suppressing stress in the natural world as much as possible.
近年、電子部品製造工場は、瀬戸内海などの湾岸地域で立地しているため、この電子部品製造の生産工程で使われる薬液やガス等の廃液及び排気ガスを一次産業である水産業、特に貝の養殖用の栄養源や基質に使用することで、廃棄物を資源化することができ、自然界に近い状態での魚介類の成長速度が早まることを発明者は見出した。   In recent years, electronic parts manufacturing factories have been located in the Gulf region such as the Seto Inland Sea. Therefore, waste liquids and exhaust gases such as chemicals and gases used in the production process of electronic parts and exhaust gas are primarily used in the marine industry, especially shellfish. The inventor has found that by using it as a nutrient source or substrate for aquaculture, the waste can be turned into resources, and the growth rate of seafood in a state close to the natural world is accelerated.
電子部品製造工場(例えば、半導体製造工場、液晶モジュール製造工場等)では、製造工程で用いる窒素ガスを大気中の空気から精製する深冷式や、PSA式の窒素ガス製造装置が設置されている。   Electronic component manufacturing factories (for example, semiconductor manufacturing factories, liquid crystal module manufacturing factories, etc.) are equipped with deep-cooling or PSA-type nitrogen gas manufacturing equipment that purifies nitrogen gas used in the manufacturing process from air in the atmosphere. .
この窒素ガスを製造する際の副産物として、初めに二酸化炭素が排出され、その後、酸素濃度が約30%で温度が3℃から5℃程度の低温の酸素富化ガスが排気ガスとして放出される。   As a by-product in producing this nitrogen gas, carbon dioxide is first discharged, and then a low-temperature oxygen-enriched gas having an oxygen concentration of about 30% and a temperature of about 3 ° C. to 5 ° C. is released as exhaust gas. .
この酸素富化ガスを海洋に設置した貝の養殖用の筏の海底まで供給することで、貝の養殖用の筏近傍の溶存酸素濃度を上昇させることができ、カキ、ホタテ貝、アコヤ貝、シロチョウ貝、クロチョウ貝、アオヤギ、トコブシ及びアワビの稚貝の成長促進、言い換えれば貝のエラ呼吸を速めることができる。   By supplying this oxygen-enriched gas up to the bottom of the shell for shellfish cultivation installed in the ocean, the dissolved oxygen concentration in the vicinity of the shell for shellfish culture can be increased, and oysters, scallops, oyster shellfish, Can promote the growth of juveniles of white butterfly, black butterfly, green goat, tocobushi and abalone, in other words, it can accelerate the shell respiration.
貝のエラ呼吸が速くなると植物プランクトンを摂取する量が増え、貝の成長に必要な基質成分(例えば、酸素、窒素、水素、炭素)や、無機質(例えばリン、カリウム、カルシウム、マグネシウム等)の吸収が促進する。   The amount of phytoplankton ingested increases when shellfish's gill respiration is accelerated, and the amount of substrate components (eg, oxygen, nitrogen, hydrogen, carbon) and minerals (eg, phosphorus, potassium, calcium, magnesium, etc.) necessary for shellfish growth are increased. Absorption promotes.
また、電子部品製造工場の蒸気ボイラから排気する40℃から80℃の二酸化炭素ガスを、海洋に設置した貝の養殖用の筏の海底まで供給することで、海水の温度を約20℃から25℃に調整でき、貝の活性化の環境を生み出すことができると同時に、海草、藻類の光合成を促進することとなり、植物プランクトンが増え、貝の成長に役立てることができる。   In addition, by supplying carbon dioxide gas of 40 ° C to 80 ° C exhausted from the steam boiler of the electronic component manufacturing factory to the bottom of the salmon for shellfish cultivation installed in the ocean, the temperature of seawater is about 20 ° C to 25 ° C. It can be adjusted to ℃ and can create an environment for the activation of shellfish. At the same time, it promotes the photosynthesis of seaweeds and algae, increasing the number of phytoplankton, which can be used for shellfish growth.
貝の種類でトコブシ及びアワビは光を好まないため、海洋に設置した貝の養殖用の筏に連係した養殖用篭には遮光性、且つ、透水性の繊維を貼ることで成長促進ができる。   Because of the kind of shellfish, abalone and abalone do not like light, so the growth can be promoted by attaching a light-shielding and water-permeable fiber to the cultivation cage linked to the shell cultivation cage installed in the ocean.
また、純水製造工程で用いるRO膜からの濃縮水にはカリウム成分、カルシウム成分及びマグネシウム成分が含まれる為、この濃縮水と、工場の食堂から排出する有機排水処理工程での処理水(窒素、リンが含まれる)を混合して別の系統の配管で、海洋に設置した貝の養殖用の篭の近傍に供給することで、マグネシウム成分及びカルシウム成分はポリカルボン酸と合成しているが、海水によってカルシウム溶液及びマグネシウム溶液に分離され、貝の殻の成長を促進させることができ、窒素、リン等は海草、藻類の生育を促進させることができる。   In addition, since the concentrated water from the RO membrane used in the pure water production process contains potassium, calcium and magnesium components, this concentrated water and the treated water (nitrogen) in the organic wastewater treatment process discharged from the factory cafeteria. In addition, the magnesium component and the calcium component are synthesized with polycarboxylic acid by mixing and supplying to the vicinity of the shell for shellfish culture installed in the ocean by piping of another system. They are separated into calcium and magnesium solutions by seawater and can promote the growth of shells, and nitrogen, phosphorus, etc. can promote the growth of seaweeds and algae.
尚、海洋に窒素及びリンの供給には地域による排出規制があるため、陸上で藻類である植物プランクトンに有機排水処理工程での処理水の窒素及びリン等を供給して、植物プランクトンを生育してから、海洋に設置した貝の養殖用の篭の近傍に供給することで、稚貝の成長を促進させることができる。   Since the supply of nitrogen and phosphorus to the ocean is subject to local emission regulations, the phytoplankton is grown by supplying nitrogen, phosphorus, etc., of the treated water in the organic wastewater treatment process to phytoplankton, which is an algae on land. After that, the growth of juvenile shellfish can be promoted by supplying it to the vicinity of the shell for raising shellfish installed in the ocean.
さらに前記酸素富化ガスの供給において、任意の配管の位置で海水と前記酸素富化ガスを用いてマイクロバブル発生装置において、酸素富化の微細気泡をさらに細かい気泡として海洋に設置した稚魚または稚貝の養殖用の筏の海底から供給することで海水中の溶存酸素の濃度を高めることができる。   Furthermore, in the supply of the oxygen-enriched gas, the microbubble generator using seawater and the oxygen-enriched gas at the position of an arbitrary pipe, the oxygen-enriched fine bubbles installed in the ocean as finer bubbles or fry The concentration of dissolved oxygen in seawater can be increased by supplying it from the seabed of shellfish for culturing shellfish.
このように、海洋に設置した稚魚または稚貝の養殖用の筏周囲に稚魚または稚貝の栄養分を供給することで、藻類である植物プランクトンが増殖し、それを稚貝や、動物プランクトンが捕食する食物連鎖を人工的に行える環境状態とすることができる。   In this way, by supplying larvae or larvae nutrients around the larvae for larvae or larvae set up in the ocean, phytoplankton, which is an algae, grows, and the larvae and zooplankton prey on it. It can be set as the environmental state which can perform the food chain to do artificially.
次に魚介類の養殖用筏については、従来海洋に使用している筏を用いるが、筏を構成する枠材の外周部に海底から約20cmまで到達するナイロンやポリエステルの樹脂製の通気可能な網状の覆いを外周の周囲に設け、この覆いの海底部での端部には棒状の錘を具備することで、海底等での波の圧力でこの覆いが浮遊することを抑制できる。   Next, for the seafood aquaculture, the conventional one used in the ocean is used, but the outer periphery of the frame material constituting the cage can be made of a nylon or polyester resin that can reach about 20 cm from the seabed. A net-like cover is provided around the outer periphery, and a rod-like weight is provided at the end of the cover at the sea bottom, so that the cover can be prevented from floating due to the wave pressure on the sea bottom.
これにより、潮流を妨げることがなく、電子部品製造工場から廃棄された酸素富化ガスの微細気泡や、二酸化炭素ガスの微細気泡等を稚貝及び海草、藻類に必要な基質成分を筏の外周から海洋に流出することを抑制できる。   As a result, the oxygen-enriched gas microbubbles and carbon dioxide gas microbubbles discarded from the electronic component manufacturing plant are removed from the peripheries of the sea bream, seaweed, and algae. Can be prevented from flowing into the ocean.
尚、ナイロンやポリエステルの樹脂製の通気可能な網状の覆いの目開きのサイズは任意のサイズでよいが、潮流を妨げることなく、微細気泡が覆いで囲われた部分に留まる効率を考慮すると覆いの目開きのサイズは0.3mmから0.5mmが好ましく、海底まで敷き詰める袋形状のものが好ましい。   The opening size of the breathable net-like cover made of nylon or polyester resin may be any size, but considering the efficiency with which fine bubbles stay in the covered part without disturbing the tide The size of the opening is preferably 0.3 mm to 0.5 mm, and is preferably a bag shape that is spread to the sea floor.
また、養殖用の筏に連係した篭の目開きのサイズは、稚貝の成長に応じて交換することが好ましく、少なくとも、篭の目開きのサイズは稚貝が篭から落ちることがないサイズが好ましい。   In addition, the size of the mesh opening of the cocoons linked to the aquaculture cocoons is preferably exchanged according to the growth of the larvae, and at least the size of the cocoon openings is such that the larvae do not fall from the cocoons. preferable.
また、養殖用の筏に連係した篭の大きさは、養殖用の筏に応じたサイズが好ましく、
少なくとも、連係した篭と篭が接触しないサイズが好ましい。なぜなら、接触による振動は、稚貝が成長を妨げる働きをするからである。
In addition, the size of the cocoon linked to the aquaculture cocoon is preferably a size corresponding to the culturing cocoon,
At least a size in which the linked wrinkles do not come into contact with each other is preferable. This is because the vibration caused by the contact works to prevent the larvae from growing.
また、養殖用の筏に連係した篭の内側の底部には、海草や藻類を植生する市販の海草種苗付リングが具備されている。   Moreover, a commercially available seaweed seedling ring for vegetating seaweeds and algae is provided at the bottom of the inner side of the coral linked to the aquaculture carp.
さらに、植生する海草はワカメが良く、稚貝が成長し、産卵期に卵を産み付けるにはワカメが最適であり、日本の殆どの沿岸で生育させることができるからである。   Furthermore, the seaweed to be vegetated has good seaweed, young shellfish grow, and seaweed is the best way to lay eggs during the spawning season and can grow on most coasts in Japan.
また、貝の殻の表面にフジツボが付着することがあるが、酸素富化ガスまたは二酸化炭素ガスの微細気泡(例えば0.2〜0.5μmの気泡)が貝の殻に接触することで、貝の殻を洗浄でき、フジツボの付着を防止できる。   In addition, barnacles may adhere to the surface of shells of shells, but when fine bubbles of oxygen-enriched gas or carbon dioxide gas (for example, bubbles of 0.2 to 0.5 μm) come into contact with shells of shells, Shells can be washed and barnacles can be prevented from sticking.
この微細気泡は稚貝が成長に対して、振動等のストレスとはならず、特に酸素富化ガスの微細気泡は貝の殻に接触することで海洋に溶存酸素として溶け込みやすくなる。   The microbubbles do not cause stress such as vibration when the juvenile shellfish grow, and in particular, the microbubbles of the oxygen-enriched gas are easily dissolved in the ocean as dissolved oxygen by contacting the shell of the shellfish.
本発明において、電子部品製造工場から排出する排ガス、廃液を利用した魚介類の養殖方法で稚魚または稚貝の生育環境を整え、一例として海洋である自然界で稚貝を短期間(約11ヶ月)に出荷できる大きさに成長させることができた。   In the present invention, the growth environment of fry or larvae is prepared by a method of culturing seafood using exhaust gas and waste liquid discharged from an electronic component manufacturing factory, and as an example, larvae are produced in a short time (about 11 months) in the natural environment of the ocean. It was able to grow to the size that can be shipped to.
本発明によれば、潮流を妨げることがなく、電子部品製造工場から廃棄された酸素富化ガスの微細気泡と二酸化炭素ガスの微細気泡を筏の外周から海洋に流出することを抑制できる。また、電子部品製造工場から排出する排ガス及び廃液の供給を制御して海洋の養殖筏に連係した篭の中の稚貝または養殖筏の中の稚魚を短期間で成長させることができた。 According to the present invention, the flow of oxygen-enriched gas microbubbles and carbon dioxide gas microbubbles discarded from the electronic component manufacturing factory to the ocean can be suppressed without interfering with current flow. Moreover, by controlling the supply of exhaust gas and waste liquid discharged from the electronic component manufacturing factory, the larvae in the culm or the larvae in the cultivated culm linked to the marine aquaculture culm could be grown in a short period of time.
また、本発明によれば、電子部品製造工場からの廃棄物を稚貝の養殖に成長促進用物質として有効活用できるため、安価で大量の貝および魚類(例えば鯛、ヒラメ)を短期間で出荷できる。   In addition, according to the present invention, waste from an electronic component manufacturing factory can be effectively used as a growth-promoting substance for the cultivation of juvenile shellfish. Therefore, a large amount of shellfish and fish (for example, salmon and flounder) are shipped in a short period of time. it can.
また、必要以上の成長促進用物質を供給しないように制御することで、海洋汚染の防止にも寄与できる。   Moreover, it can also contribute to prevention of marine pollution by controlling not to supply the growth promoting substance more than necessary.
本発明の稚貝の養殖の概略構成図である。It is a schematic block diagram of the culture of the juvenile shellfish of this invention. 本発明の稚貝の養殖に係る概略平面図である。It is a schematic plan view which concerns on the culture of the juvenile shellfish of this invention. 本発明の稚貝の養殖用篭の内部の状態図である。It is a state diagram inside the juvenile for raising juvenile shellfish of the present invention. 海洋における本発明と自然界の溶存酸素の濃度比較図である。It is a comparison figure of concentration of dissolved oxygen of the present invention and nature in the ocean. 海洋における本発明と自然界の稚貝の成長比較図である。It is a growth comparison figure of the present invention and the natural nymph in the ocean.
以下に本発明を実施例を用いて説明する。   The present invention will be described below with reference to examples.
本発明の一例として稚貝の養殖に係る実施形態を図1から図5を用いて説明する。   As an example of the present invention, an embodiment relating to the cultivation of juvenile shellfish will be described with reference to FIGS.
図1は本発明の稚貝の養殖の概略構成図であり、電子部品製造工場(例えば、半導体製造工場、液晶モジュール製造工場、有機ELディスプレイ製造工場等)1には、様々な製造過程で、ガス、薬液、用水を用い各々の製造工程に供給される。   FIG. 1 is a schematic configuration diagram of the cultivation of juvenile shellfish according to the present invention. An electronic component manufacturing factory (for example, a semiconductor manufacturing factory, a liquid crystal module manufacturing factory, an organic EL display manufacturing factory, etc.) 1 has various manufacturing processes. Gas, chemical solution, and water are supplied to each manufacturing process.
例えば液晶モジュールの製造工場では、その製造工程で洗浄や、薬液濃度の希釈用に純水が用いられるため純水製造装置2が具備されている。   For example, in a liquid crystal module manufacturing factory, pure water is used for cleaning or diluting chemical concentration in the manufacturing process.
純水製造時には純水製造装置2にはRO膜(逆浸透膜)からの透過水と濃縮水3が得られ、透過水は必要な工程で用いられるが濃縮水3は排水される。   At the time of producing pure water, the permeated water and the concentrated water 3 from the RO membrane (reverse osmosis membrane) are obtained in the pure water producing apparatus 2, and the permeated water is used in necessary steps, but the concentrated water 3 is drained.
この排水される濃縮水3には、透過水を得る為のスケール分散剤(高分子薬剤)等が入っており、例えば、ポリカルボン酸とカリウム及びカルシウム又はマグネシウムが化合した塩である高分子化合物が存在する。   The concentrated water 3 to be drained contains a scale dispersant (polymer drug) for obtaining permeated water, for example, a polymer compound which is a salt formed by combining polycarboxylic acid with potassium and calcium or magnesium. Exists.
この高分子化合物であるポリカルボン酸塩は難分解性であるが、海水に投入すると前記高分子化合物は分解されカリウム溶液や、カルシウム溶液又は、マグネシウム溶液として養殖筏4に連係した養殖篭5の中の稚貝の成長促進用物質となる。   The polycarboxylate which is this polymer compound is hardly decomposable, but when it is put into seawater, the polymer compound is decomposed and the cultured cocoon 5 linked to the cultivating potato 4 as a potassium solution, calcium solution or magnesium solution is used. It becomes a substance for promoting growth of juvenile shellfish inside.
このカリウム溶液やカルシウム溶液又はマグネシウム溶液は、稚貝の殻の成長に必要な成長促進用物質であり、殻が成長し大きくなれば貝の身の部分も大きくなる。   This potassium solution, calcium solution, or magnesium solution is a growth promoting substance necessary for the growth of shellfish shells, and the shell portion grows larger as the shell grows larger.
また電子部品製造工場1で使用する窒素ガス製造装置6は、空気を純度の高い窒素ガスを精製するものであり、深冷分離法や、吸着法があり、吸着法にはTSA式やPSA式があり、最近ではPSA式が主流である。   Moreover, the nitrogen gas production apparatus 6 used in the electronic component production factory 1 purifies nitrogen gas with high purity, and includes a cryogenic separation method and an adsorption method, and the adsorption method includes a TSA type and a PSA type. Recently, the PSA type is the mainstream.
この窒素精製時には空気中の窒素以外の物資である酸素や二酸化炭素等を低温の排気ガスとして大気中に放出している。   During this nitrogen purification, oxygen, carbon dioxide, and the like, which are materials other than nitrogen in the air, are released into the atmosphere as low-temperature exhaust gas.
この排気ガスは酸素が約30%の酸素富化ガスであり、窒素製造は圧力をかけて精製する為、前記酸素富化ガスの温度は窒素ガス製造装置6から排出した配管出口温度は約3℃から5℃の低温の気体である。   This exhaust gas is an oxygen-enriched gas having about 30% oxygen, and since nitrogen production is purified by applying pressure, the temperature of the oxygen-enriched gas is about 3% at the outlet of the pipe discharged from the nitrogen gas production apparatus 6. It is a low-temperature gas at 5 ° C to 5 ° C.
この酸素富化ガスを窒素ガス製造装置6の窒素製造の性能に支障がないように、先端がフレア加工された配管で接続し、その配管を海洋まで伸ばし、海中に入る前段で、樹脂をコーティングしたゴム製配管7と接続する。   The oxygen-enriched gas is connected with a pipe with a flared tip so that the nitrogen production performance of the nitrogen gas production device 6 is not hindered, the pipe is extended to the ocean, and the resin is coated before entering the sea. The rubber pipe 7 is connected.
ゴム製配管7は、海洋に設置した貝の養殖筏4直下の海底で、図2に示すように外周の四辺を接続し、海洋からの供給用の辺以外の3辺の配管に各々1箇所ずつ分岐管を接続し、養殖筏4の中心部に向けて配管を延ばし、夫々分岐した配管と3辺の配管が任意の距離を持って並行に散気配管8を配置して前記酸素富化ガスを供給する。なお、図2では養殖筏4は省略している。   The rubber pipe 7 is connected to the four sides of the outer circumference as shown in FIG. 2 on the sea floor just below the shellfish culturing cage 4 installed in the ocean, and one place for each of the three sides of the pipe other than the side for supply from the ocean. Branch pipes are connected one by one, the pipes are extended toward the center of the aquaculture rod 4, and each of the branched pipes and the three side pipes are arranged in parallel with an arbitrary distance, and the aeration pipe 8 is arranged in parallel to the oxygen enrichment. Supply gas. In FIG. 2, the culture trough 4 is omitted.
この場合、養殖筏4から海底までの深度が深いと圧力が高くなり、供給された酸素が約30%の酸素富化ガスは、微細気泡となり、ガス自体の温度及び海洋の深度の圧力、海水温度の関係から溶存酸素濃度を高くすることができる。   In this case, when the depth from the culture trough 4 to the seabed is deep, the pressure becomes high, and the oxygen-enriched gas whose supplied oxygen is about 30% becomes fine bubbles, and the temperature of the gas itself and the pressure of the ocean depth, seawater The dissolved oxygen concentration can be increased from the temperature relationship.
また、電子部品製造工場1では熱源の製造のため、蒸気ボイラ9が具備されており、この蒸気ボイラ9の排ガスは高温(40℃から80℃)の二酸化炭素ガスが多く含まれる為、この二酸化炭素ガスを、蒸気ボイラ9の排気煙突にフレアー配管を接続し、酸素富化ガスを供給する配管と地上で配管接続し、海底に高温の二酸化炭素ガスを供給する。   In addition, the electronic component manufacturing factory 1 is provided with a steam boiler 9 for manufacturing a heat source, and the exhaust gas of the steam boiler 9 contains a large amount of high-temperature (40 ° C. to 80 ° C.) carbon dioxide gas. The flare pipe is connected to the exhaust chimney of the steam boiler 9 and the carbon gas is connected to the pipe for supplying the oxygen-enriched gas and the pipe on the ground, and high-temperature carbon dioxide gas is supplied to the sea floor.
海底に酸素富化ガスを供給する配管と同じ配管で、酸素富化ガスと二酸化炭素ガスを個別または両方混合して供給することで、養殖筏4直下の海底の温度を13℃〜25℃の間に調整することができ、好ましくは19℃から22℃に調整することができ、この温度は、カキ、ホタテ貝、アコヤ貝、シロチョウ貝、クロチョウ貝、アオヤギ、トコブシ及びアワビの稚貝の成長を促進させる最適な温度である。   By supplying the oxygen-enriched gas and carbon dioxide gas separately or in a mixture with the same pipe that supplies the oxygen-enriched gas to the seabed, the temperature of the seabed immediately below the culture tub 4 is 13 ° C to 25 ° C. It can be adjusted in between, preferably from 19 ° C to 22 ° C, this temperature is the growth of oysters, scallops, pearl oysters, white butterflies, black scallops, blue goats, tocobushi and abalone larvae It is the optimal temperature that promotes.
また、養殖筏4直下の海底の温度を13℃〜25℃の間に調整し、溶存酸素濃度を高くすることができ、二酸化炭素ガスを供給することで、海草(特にワカメ)の成長が早くなり、稚貝の餌となる藻類等の植物プランクトンも活性化させることができる。   In addition, the temperature of the seabed just below the culture trough 4 can be adjusted between 13 ° C and 25 ° C to increase the dissolved oxygen concentration. By supplying carbon dioxide gas, seaweed (especially seaweed) grows faster. It is possible to activate phytoplankton such as algae that serve as feed for juveniles.
養殖筏4は大きさが、1辺が約10mから20mの正方形に組んだものを海洋に複数個設置し、海底までアンカー(錘)を降ろして固定する。海洋の水深については、約5mから30mが良く、貝の種類や貝の成長により水深を変化させることが好ましい。   The aquaculture rods 4 are a plurality of squares each having a size of about 10 m to 20 m on a side, and a plurality of them are installed in the ocean, and anchors (weights) are lowered and fixed to the sea floor. The water depth of the ocean is preferably about 5 to 30 m, and it is preferable to change the water depth depending on the type of shellfish and the growth of shellfish.
この養殖筏4に任意の間隔で海底に届くまでのロープを降し海底部分でアンカー(錘)によって固定し、そのロープに任意の間隔を開けて養殖篭5を係止する。   A rope that reaches the bottom of the sea at an arbitrary interval is lowered on the culture rod 4 and fixed by an anchor (weight) at the sea bottom, and the culture rod 5 is locked at an arbitrary interval on the rope.
このとき、養殖篭5同士が接触しない距離で潮流を妨げないように養殖篭5をロープに係止することで、自然界に近い状態で稚貝の成長を促進することができる。   At this time, the growth of young larvae can be promoted in a state close to the natural world by locking the cultured shark 5 to the rope so as not to disturb the tidal current at a distance where the cultured sharks 5 do not contact each other.
また、トコブシ及びアワビの稚貝は光を嫌う性質があるため、日光の透過度が低い場所に養殖篭5を係止するか、養殖篭5の内側に遮光性の樹脂繊維(例えば、ポリエチレン:PE、ポリエチレンテレフタレート:PET)を設置することで通気性があり、遮光できる環境を作ることができ、トコブシ及びアワビの稚貝の成長を促進できる。   In addition, since the larvae of abalone and abalone have the property of hating light, the cultured cocoon 5 is locked in a place where the transmittance of sunlight is low, or a light-shielding resin fiber (for example, polyethylene: By installing PE, polyethylene terephthalate (PET), it is possible to create an environment that is air permeable and can be shielded from light, and can promote the growth of Tokobushi and Abalone larvae.
さらに、養殖筏4を構成する枠材の外周部に海底まで到達するナイロンやポリエステルの樹脂製の通気可能な網状の覆いを外周の周囲に設け、この覆いの海底部付近の端部には棒状の錘を具備することで、海底等での波の圧力でこの覆いが浮遊することを抑制できる。   Furthermore, a perforated net-like cover made of nylon or polyester resin that reaches the seabed is provided around the outer periphery of the frame material constituting the aquaculture rod 4, and a rod-like cover is provided at the end of the cover near the seabed. By providing the weight, it is possible to prevent the covering from floating due to wave pressure on the seabed or the like.
この網状の覆いにより、外部からの大きな異物が養殖筏4に進入して、養殖篭5を破壊することを防止できる。   With this net-like cover, it is possible to prevent a large foreign matter from entering the culture rod 4 and destroying the culture rod 5.
また、潮流を妨げることがなく、電子部品製造工場1から廃棄された酸素富化ガスの微細気泡や、二酸化炭素ガスの微細気泡等を稚貝及び海草、藻類に必要な基質成分を筏の外周から海洋に流出することを抑制でき、漁礁にもなる。   In addition, the oxygen-enriched gas microbubbles and carbon dioxide gas microbubbles discarded from the electronic component manufacturing factory 1 are not disturbed and the substrate components necessary for juvenile shellfish, seaweed, and algae Outflow from the sea to the ocean, can also be a fishing reef.
尚、ナイロンやポリエステルの樹脂製の通気可能な網状の覆いの目開きのサイズは任意のサイズでよいが、潮流を妨げることなく、微細気泡が覆いで囲われた部分に留まる効率を考慮すると覆いの目開きのサイズは0.3mmから0.5mmが好ましい。   The opening size of the breathable net-like cover made of nylon or polyester resin may be any size, but considering the efficiency with which fine bubbles stay in the covered part without disturbing the tide The size of the openings is preferably 0.3 mm to 0.5 mm.
つぎに養殖篭5の内側の構成について図3を用いて説明する。   Next, the configuration inside the culture tub 5 will be described with reference to FIG.
養殖篭5の材質は通気性のあるナイロンやポリエステルが好ましく、形状を維持する為の芯材がステンレスであるSUS316にポリエステル塗装を施したものが耐候性や防錆製の観点から優れている。また、形状は潮流の影響を抑制できる蓋つきの円筒形が好ましい。   The material of the culture cage 5 is preferably breathable nylon or polyester, and SUS316, which is made of stainless steel as a core material for maintaining the shape, is excellent in terms of weather resistance and rust prevention. The shape is preferably a cylindrical shape with a lid that can suppress the influence of tidal currents.
養殖篭5の内側底部には市販の海草種苗付リング10を設置し、ワカメの種苗を植生する。この海草種苗付リング10の主成分はカルシウムが好ましく、海草種苗付リング10に替えてサンゴを敷き詰めても良い。   A commercially available seaweed seedling ring 10 is installed on the inner bottom of the culture trough 5 to plant seedlings of seaweed. The main component of the seaweed seedling ring 10 is preferably calcium, and coral may be spread instead of the seaweed seedling ring 10.
養殖篭5には稚貝を入れるが、成長に応じて養殖篭5の大きさを変えることで、稚貝の成長のばらつきを抑制することができる。   Although the larvae are put in the cultured trough 5, the variation in the growth of the larvae can be suppressed by changing the size of the cultured trough 5 according to the growth.
また、電子部品製造工場1の食堂から排出する有機排水には窒素やリンが含まれており、有機排水処理工程での生物処理(嫌気性処理)後の処理水12を流量調整して、純水製造装置2で用いるRO膜からの濃縮水3と混合して、別の系統の配管で、海洋に設置した貝の養殖用の篭の近傍に供給する。   In addition, the organic wastewater discharged from the cafeteria of the electronic component manufacturing factory 1 contains nitrogen and phosphorus, and the flow rate of the treated water 12 after biological treatment (anaerobic treatment) in the organic wastewater treatment process is adjusted to be pure. It is mixed with the concentrated water 3 from the RO membrane used in the water production apparatus 2 and supplied to the vicinity of the shell for raising shellfish installed in the ocean by another line of piping.
これにより、カルシウム溶液及びマグネシウム溶液は貝の殻の成長を促進させることができ、窒素、リン等は海草、植物プランクトンの生育を促進させることができる。   Thereby, the calcium solution and the magnesium solution can promote the growth of shells of shells, and nitrogen, phosphorus and the like can promote the growth of seaweed and phytoplankton.
次に養殖筏4を設置する海洋における水深別の溶存酸素濃度について、自然界における海洋の溶存酸素濃度と本発明での溶存酸素濃度は図4に示すように、水深が30mの深い場所での自然界での溶存酸素濃度は、水温15℃において5.0mg/lと低いが、本発明での水温15℃における溶存酸素の濃度は水深が10mから30mでの溶存酸素濃度を平均11.5mg/lの環境を作ることができ、稚貝、植物プランクトンの生育を促進させることができる。   Next, regarding the dissolved oxygen concentration according to the water depth in the ocean where the farm 4 is installed, the dissolved oxygen concentration in the ocean in the natural world and the dissolved oxygen concentration in the present invention are as follows in the natural world at a depth of 30 m as shown in FIG. The dissolved oxygen concentration at a water temperature of 15 ° C. is as low as 5.0 mg / l, but the dissolved oxygen concentration at a water temperature of 15 ° C. in the present invention is 11.5 mg / l on average at a water depth of 10 to 30 m. Environment and can promote the growth of juvenile shellfish and phytoplankton.
このように、電子部品製造工場1から排出する、排ガス、廃液を海洋において稚貝の養殖に用いることで、図5に示すように自然界での稚貝の成長と、本発明の稚貝の成長を比較した結果12ヶ月の時点で、自然界でのアワビの大きさは約5cm程度であったが、本発明でのアワビの大きさは9cmを超えていた。   Thus, by using the exhaust gas and waste liquid discharged from the electronic component manufacturing factory 1 for the cultivation of larvae in the ocean, as shown in FIG. 5, the growth of the larvae in nature and the growth of the larvae of the present invention are performed. As a result of comparison, the size of the abalone in nature was about 5 cm at the time of 12 months, but the size of the abalone in the present invention exceeded 9 cm.
次の溶存酸素濃度を高くする方法について、実施例1との違いについて説明する。
図1及び図2の窒素ガス製造装置6からの酸素が約30%の酸素富化ガスと二酸化炭素ガスの海底への供給配管の中段で、海洋から海水を取込む配管を具備し、酸素富化ガスと二酸化炭素ガスを加圧ポンプで押し込みインジェクションを配管内に設けることで、微細気泡の平均径が0.2から0.5μmのマイクロバブルを発生させるマイクロバブル発生装置11を設置することで、養殖筏4直下の海底近傍から海面までの溶存酸素濃度を上昇させることができる。
The difference from Example 1 is demonstrated about the method of raising the next dissolved oxygen concentration.
The middle stage of the supply pipe to the seabed of about 30% oxygen-enriched gas and carbon dioxide gas from the nitrogen gas production apparatus 6 of FIGS. By installing the microbubble generator 11 that generates microbubbles having an average diameter of fine bubbles of 0.2 to 0.5 μm by pushing the chemical gas and carbon dioxide gas with a pressure pump and providing injection in the pipe It is possible to increase the dissolved oxygen concentration from the vicinity of the sea bottom directly below the culture ridge 4 to the sea surface.
本発明は、稚魚や稚貝の養殖に好適に利用することができる。   The present invention can be suitably used for culturing fry and larvae.
1 電子部品製造工場
2 純水製造装置
3 濃縮水
4 養殖筏
5 養殖篭
6 窒素ガス製造装置
7 ゴム製配管
8 散気配管
9 蒸気ボイラ
10 海草種苗付リング
11 マイクロバブル発生装置
12 処理水
DESCRIPTION OF SYMBOLS 1 Electronic component manufacturing plant 2 Pure water production apparatus 3 Concentrated water 4 Cultured culm 5 Cultured culm 6 Nitrogen gas production apparatus 7 Rubber piping 8 Aeration piping 9 Steam boiler 10 Seaweed seedling ring 11 Micro bubble generator 12 Processed water

Claims (12)

  1. 電子部品製造工場から排出される廃棄物を、海洋で養殖される稚貝または稚魚の成長促進の栄養素として用い、稚魚または稚貝を養殖する海洋に設置した養殖用の筏の外周囲を覆う網状の覆いを設け、前記電子部品製造工場から廃棄された酸素富化ガスの微細気泡と前記電子部品製造工場の蒸気ボイラから排気する二酸化炭素ガスの微細気泡を前記網状の覆い内に供給し、前記網状の覆いの目開きのサイズを0.3mm〜0.5mmとする前記稚貝または前記稚魚の養殖方法。 The waste discharged from the electronic component manufacturing plant is used as a nutrient for promoting the growth of juveniles or larvae cultivated in the ocean, and the nets that cover the outer peripheries of the aquaculture cages installed in the ocean where the larvae or larvae are cultivated And supplying the fine bubbles of oxygen-enriched gas discarded from the electronic component manufacturing factory and the fine bubbles of carbon dioxide gas exhausted from the steam boiler of the electronic component manufacturing factory into the mesh-shaped cover, The method for culturing the fry or the fry, wherein the mesh cover has a mesh opening size of 0.3 mm to 0.5 mm .
  2. 養殖される稚貝がカキ、ホタテ貝、アコヤ貝、シロチョウ貝、クロチョウ貝、アオヤギ、トコブシ及びアワビであることを特徴とする請求項1記載の養殖方法。   The culture method according to claim 1, wherein the young shellfish to be cultured are oysters, scallops, pearl oysters, white butterflies, black scallops, blue goats, tocobushi and abalone.
  3. 養殖される稚魚が鯛、ヒラメであることを特徴とする請求項1記載の前記稚魚の養殖方法。   The method for cultivating said fry according to claim 1, wherein the fry to be cultivated is salmon or flounder.
  4. 電子部品製造工程で用いる窒素ガス製造装置からの排気ガスを、海底に供給して溶存酸素濃度を高くして、稚貝または稚魚の成長を促進させることを特徴とする請求項1または請求項2または請求項3記載の養殖方法。   The exhaust gas from the nitrogen gas production apparatus used in the electronic component production process is supplied to the seabed to increase the dissolved oxygen concentration to promote the growth of juvenile shellfish or juvenile fish. Or the culture method of Claim 3.
  5. 電子部品製造工程で用いる蒸気ボイラの排ガスを、海底に供給して海洋の水温を制御するとともに、海草の光合成及び植物プランクトンを増殖させて稚貝または稚魚の成長を促進させることを特徴とする請求項1乃至4のいずれかに記載の養殖方法。 The steam boiler exhaust gas used in the electronic component manufacturing process is supplied to the seabed to control the water temperature of the ocean, and the photosynthesis of phytoplankton and phytoplankton are propagated to promote the growth of juvenile shellfish or fry. Item 5. A culture method according to any one of Items 1 to 4.
  6. 電子部品製造工程で用いる純水製造装置のRO膜から排出する濃縮水を海洋に供給し、前記濃縮水にはポリカルボン酸とカリウム及びカルシウム又はマグネシウムが化合した塩である高分子化合物が存在し、稚貝の殻の成長を促進させるカルシウム源又はマグネシウム源としたことを特徴とする請求項1、2、4、または5のいずれかに記載の養殖方法。 Concentrated water discharged from the RO membrane of the pure water manufacturing apparatus used in the electronic component manufacturing process is supplied to the ocean, and the concentrated water contains a polymer compound that is a salt of a combination of polycarboxylic acid and potassium and calcium or magnesium. aquaculture method according to any of claims 1, 2, 4 or 5, characterized in that the calcium source or magnesium source to promote the growth of shells of spats.
  7. 有機排水処理工程において、生物処理をする嫌気処理した後処理水に含まれる窒素およびリン成分を、稚貝または稚魚及び海草に供給して成長を促進させることを特徴とする請求項1乃至6のいずれかに記載の養殖方法。 7. The organic waste water treatment step, wherein nitrogen and phosphorus components contained in the post-treatment water subjected to anaerobic treatment for biological treatment are supplied to juvenile shellfish or juvenile fish and seaweed to promote growth . The aquaculture method according to any one of the above.
  8. 養殖用の筏にロープを降しそのロープに係止した養殖篭を設け、養殖される稚貝の種類によって、前記稚貝の前記養殖篭を遮光性又は光透過性を選択することを特徴とする請求項1または請求項6記載の稚貝の養殖方法。 Aquaculture basket locked to the rope made a rope raft for aquaculture provided, the type of spats being farmed, and characterized by selecting a light-shielding or light-transmitting said aquaculture cage of the spats The method for cultivating juvenile shellfish according to claim 1 or 6.
  9. 養殖用の筏にロープを降しそのロープに係止した養殖篭を設け、前記養殖篭の中に海草種苗付リングまたはサンゴを具備していることを特徴とする請求項1または請求項6または請求項8記載の稚貝の養殖方法。 7. A culture rod provided with a rope dropped on a cultivation rod and locked to the rope, and a seaweed seedling ring or a coral provided in the cultivation rod. The method for culturing juvenile shellfish according to claim 8.
  10. 養殖用の筏にロープを降しそのロープに係止した養殖篭を設け、稚貝の養殖篭の中に海草を共生させて、成長を促進させることを特徴とする請求項1または請求項6または請求項8または請求項9記載の稚貝の養殖方法。 7. A culture culm in which a rope is lowered and locked to the culturing culm, and seagrass is symbiotic in the larvae culturing culm to promote growth. Or the culture method of the juvenile shellfish of Claim 8 or Claim 9.
  11. 稚貝の養殖用の筏の周囲に海底まで樹脂製の網を具備したことを特徴とする請求項1乃至10のいずれかに記載の養殖方法。 The culture method according to any one of claims 1 to 10, wherein a resin net is provided around the sea bream for larva shellfish to the sea floor.
  12. 稚貝の成長を促進させる方法であって、窒素ガス製造装置からの排気ガスをマイクロバブル発生装置で微細気泡となった前記排ガスを用いて溶存酸素濃度を高くして、稚貝または稚魚の成長を促進させることを特徴とする請求項1乃至11のいずれかに記載の稚貝または稚魚の養殖方法。 A method for promoting the growth of juvenile shellfish, wherein the exhaust gas from the nitrogen gas production device is made into fine bubbles by the microbubble generator and the dissolved oxygen concentration is increased to increase the growth of the juvenile shellfish or juvenile fish spat or juveniles method aquaculture as claimed in any one of claims 1 to 11, characterized in that to promote.
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