JP7500205B2 - Method for preparing seawater for culturing juvenile shrimp - Google Patents
Method for preparing seawater for culturing juvenile shrimp Download PDFInfo
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- JP7500205B2 JP7500205B2 JP2020013208A JP2020013208A JP7500205B2 JP 7500205 B2 JP7500205 B2 JP 7500205B2 JP 2020013208 A JP2020013208 A JP 2020013208A JP 2020013208 A JP2020013208 A JP 2020013208A JP 7500205 B2 JP7500205 B2 JP 7500205B2
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- 239000013535 sea water Substances 0.000 title claims description 74
- 241000238557 Decapoda Species 0.000 title claims description 67
- 230000000366 juvenile effect Effects 0.000 title claims description 49
- 238000000034 method Methods 0.000 title claims description 31
- 238000012258 culturing Methods 0.000 title claims description 11
- 239000012528 membrane Substances 0.000 claims description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 238000000108 ultra-filtration Methods 0.000 claims description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 11
- 239000012510 hollow fiber Substances 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 9
- 238000009360 aquaculture Methods 0.000 claims description 8
- 244000144974 aquaculture Species 0.000 claims description 8
- 239000004695 Polyether sulfone Substances 0.000 claims description 4
- 239000003242 anti bacterial agent Substances 0.000 claims description 4
- 230000000844 anti-bacterial effect Effects 0.000 claims description 4
- 229940088710 antibiotic agent Drugs 0.000 claims description 4
- 239000003899 bactericide agent Substances 0.000 claims description 4
- 229920006393 polyether sulfone Polymers 0.000 claims description 4
- 239000000706 filtrate Substances 0.000 description 7
- 241000894006 Bacteria Species 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 235000013601 eggs Nutrition 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 230000004083 survival effect Effects 0.000 description 4
- 241000251468 Actinopterygii Species 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000007792 addition Methods 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000000645 desinfectant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000384 rearing effect Effects 0.000 description 2
- 229920001817 Agar Polymers 0.000 description 1
- 241000238424 Crustacea Species 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/50—Culture of aquatic animals of shellfish
- A01K61/59—Culture of aquatic animals of shellfish of crustaceans, e.g. lobsters or shrimps
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Zoology (AREA)
- Farming Of Fish And Shellfish (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Description
本発明は、天然海水を使用した稚エビ養殖用海水の調製方法と、それを使用した稚エビの養殖方法に関する。 The present invention relates to a method for preparing seawater for cultivating juvenile shrimp using natural seawater, and a method for cultivating juvenile shrimp using the same.
エビ、かになどの甲殻類、魚などの水生生物を養殖池で養殖する養殖が実施されており、養殖池で養殖する際に使用する散気装置を含む散気システムとその運転方法の発明が知られている（特許文献１）。 Aquaculture is practiced in which aquatic organisms such as shrimp, crabs, and other crustaceans, and fish, are cultivated in aquaculture ponds, and an invention has been made regarding an aeration system including an aeration device used in aquaculture in aquaculture ponds, and an operation method thereof (Patent Document 1).
エビなどを養殖池で養殖する場合、稚エビを独立した水槽で飼育してある程度大きくした後、養殖池に放ってさらに大きく生育させる方法が通常である。
卵からふ化させた稚エビは脆弱であり、生存率は飼育水の影響を大きく受けることになるため、従来は、図２に示す薬剤添加ライン１５から飼育水の原料となる天然海水（天然海水タンク２）に殺菌剤などの薬剤を添加することで卵の発生から１８日後の生存率を５０％程度に維持していた。
When cultivating shrimp and other fish in aquaculture ponds, the usual method is to raise baby shrimp in separate tanks until they grow to a certain size, and then release them into the aquaculture pond to grow even larger.
Since the baby shrimp hatched from the eggs are fragile and their survival rate is significantly affected by the rearing water, conventionally, a chemical such as a disinfectant has been added to the natural seawater (natural seawater tank 2), which is the raw material for the rearing water, via a chemical addition line 15 shown in Figure 2, to maintain the survival rate at about 50% 18 days after the eggs hatch.
本発明は、天然海水を使用した、稚エビの養殖に使用する稚エビ養殖用海水の調製方法と、それを使用した稚エビの養殖方法を提供することを課題とする。 The objective of the present invention is to provide a method for preparing seawater for cultivating juvenile shrimp using natural seawater, and a method for cultivating juvenile shrimp using the same.
本発明は、稚エビの養殖に使用する稚エビ養殖用海水の調製方法であって、
天然海水を前処理する工程と、
前記天然海水の前処理水を限外ろ過膜モジュールによりろ過して稚エビ養殖用海水を得る工程を有しており、
原料となる天然海水、前処理水および稚エビ養殖用海水に対して、殺菌剤、抗生物質を含む薬剤を投与しない、稚エビ養殖用海水の調製方法を提供する。
The present invention relates to a method for preparing seawater for cultivating juvenile shrimp, the method comprising the steps of:
A step of pretreating natural seawater;
The method further comprises a step of filtering the pretreated natural seawater through an ultrafiltration membrane module to obtain seawater for cultivating juvenile shrimp,
Provided is a method for preparing seawater for culturing juvenile shrimp, which does not involve administering chemicals, including bactericides and antibiotics, to the raw materials, natural seawater, pretreated water, and seawater for culturing juvenile shrimp.
本発明の稚エビ養殖用海水の調製方法によれば、天然海水を原料として、殺菌剤や抗生物質などの薬剤を使用することなく、無菌状態の稚エビ養殖用海水を調製することができる。 According to the method for preparing seawater for cultivating juvenile shrimp of the present invention, it is possible to prepare sterile seawater for cultivating juvenile shrimp using natural seawater as a raw material without using chemicals such as bactericides or antibiotics.
図１により稚エビの養殖に使用する稚エビ養殖用海水の調製方法を説明する。
原料となる天然海水は、海洋から船１により採取され、運搬されたものであり、第１天然海水ライン１０から天然海水タンク２に送って貯水する。
A method for preparing seawater for cultivating juvenile shrimp will be described with reference to FIG.
The natural seawater used as the raw material is collected from the ocean by a ship 1, transported, and sent through a first natural seawater line 10 to a natural seawater tank 2 for storage.
最初の工程にて、天然海水タンク２内の天然海水を第２天然海水ライン１１から前処理工程に送って前処理する。
前処理工程は、限外ろ過膜モジュー５においてろ過するときの負荷が軽減できる方法であれば特に制限されるものではなく、各種プレフィルターによる濾過方法、活性炭による処理方法などを適用できる。
本発明の好ましい一態様は、天然海水をマイクロフィルター３でろ過した後、第１前処理水ライン１２から活性炭フィルター４に送ってろ過する工程である。
マイクロフィルター３は、例えば、孔径３～１０μmのマイクロフィルターを使用することができる。
In the first step, the natural seawater in the natural seawater tank 2 is sent through the second natural seawater line 11 to a pretreatment step for pretreatment.
The pretreatment step is not particularly limited as long as it is a method capable of reducing the load during filtration in the ultrafiltration membrane module 5, and filtration methods using various prefilters, treatment methods using activated carbon, etc. can be applied.
A preferred embodiment of the present invention is a process in which natural seawater is filtered through a microfilter 3, and then sent through a first pretreated water line 12 to an activated carbon filter 4 for filtration.
The microfilter 3 may have a pore size of, for example, 3 to 10 μm.
次の工程にて、活性炭フィルター４でろ過したものを第２前処理水ライン１３から限外ろ過膜モジュール５に送って、限外ろ過して稚エビ養殖用海水を得る。
限外ろ過膜モジュール５は、ケースハウジング内に限外濾過膜の束が収容されたものであり、限外ろ過膜としては、ポリエーテルサルホンからなる中空糸膜を使用することができる。
中空糸膜は、内圧式と外圧式のいずれでもよい。
中空糸膜の分画分子量（ポリスチレン換算）は、本発明の好ましい一態様は５０，０００以上であり、本発明の別の好ましい一態様は８０，０００以上であり、本発明のさらに別の好ましい一態様は９０，０００以上である。
中空糸膜の分画分子量は、５,０００，０００以下（公称孔径０．５μｍ以下）が好ましいが、さらに好ましくは２００，０００以下（公称孔径０．０１μｍ以下）である。分画分子量２００,０００以下により、細菌だけでなく、ウイルスの除去性能が高まる。
限外ろ過膜モジュール５は、処理水量に応じて複数を並列に配置して使用することもできるほか、分画分子量の異なるものの複数を直列配置して使用することもできる。
In the next step, the water filtered through the activated carbon filter 4 is sent through a second pretreated water line 13 to an ultrafiltration membrane module 5, where it is ultrafiltered to obtain seawater for cultivating juvenile shrimp.
The ultrafiltration membrane module 5 has a bundle of ultrafiltration membranes housed in a case housing, and hollow fiber membranes made of polyethersulfone can be used as the ultrafiltration membranes.
The hollow fiber membrane may be either an internal pressure type or an external pressure type.
The molecular weight cut-off (polystyrene equivalent) of the hollow fiber membrane is 50,000 or more in a preferred embodiment of the present invention, 80,000 or more in another preferred embodiment of the present invention, and 90,000 or more in still another preferred embodiment of the present invention.
The molecular weight cut-off of the hollow fiber membrane is preferably 5,000,000 or less (nominal pore size 0.5 μm or less), more preferably 200,000 or less (nominal pore size 0.01 μm or less). A molecular weight cut-off of 200,000 or less enhances the ability to remove not only bacteria but also viruses.
A plurality of ultrafiltration membrane modules 5 can be arranged in parallel depending on the amount of water to be treated, or a plurality of modules having different molecular weight cutoffs can be arranged in series.
ポリエーテルサルホンからなる中空糸膜は、本発明の好ましい一態様は内径０．６ｍｍ以下のものであり、本発明の別の好ましい一態様は内径０．４～０．６ｍｍのものである。
限外ろ過膜モジュール５に収容された中空糸膜の合計の有効膜面積は、本発明の好ましい一態様は４～１０ｍ2であり、本発明の別の好ましい一態様は５～８ｍ2である。
A preferred embodiment of the hollow fiber membrane made of polyethersulfone according to the present invention has an inner diameter of 0.6 mm or less, and another preferred embodiment of the present invention has an inner diameter of 0.4 to 0.6 mm.
The total effective membrane area of the hollow fiber membranes contained in the ultrafiltration membrane module 5 is 4 to 10 m2 in a preferred embodiment of the present invention, and 5 to 8 m2 in another preferred embodiment of the present invention.
限外ろ過膜モジュール５でろ過したろ過水は、ろ過水ライン１４から稚エビ養殖池（稚エビ養殖水槽）６に供給することができるほか、稚エビ養殖用海水タンク６に貯めた後、１または２以上の稚エビ養殖池（稚エビ養殖水槽）に供給することもできる
その他、稚エビ養殖用海水を容器に充填したものを販売することもできる。
限外ろ過膜モジュール５でろ過したときの濃縮水の一部または全部は、天然海水タンク２に返送することもできる。
本発明の稚エビ養殖用海水の調製方法では、原料となる天然海水、前処理水および稚エビ養殖用海水に対して、殺菌剤、抗生物質を含む薬剤を投与しないため、限外濾過膜モジュール５の濃縮水は、そのままで、または天然海水や河川水と混合した後、海洋または河川に放出することができる。
The filtrate filtered by the ultrafiltration membrane module 5 can be supplied to a baby shrimp culture pond (baby shrimp culture tank) 6 through a filtrate water line 14, or can be stored in a seawater tank for baby shrimp culture 6 and then supplied to one or more baby shrimp culture ponds (baby shrimp culture tanks).In addition, containers filled with seawater for baby shrimp culture can also be sold.
A part or all of the concentrated water obtained when filtered through the ultrafiltration membrane module 5 can be returned to the natural seawater tank 2 .
In the method for preparing seawater for cultivating juvenile shrimp of the present invention, no chemicals including bactericides and antibiotics are administered to the raw material natural seawater, pretreated water, and seawater for cultivating juvenile shrimp. Therefore, the concentrated water from the ultrafiltration membrane module 5 can be discharged into the ocean or a river as is or after being mixed with natural seawater or river water.
限外濾過膜モジュール３によるろ過運転を継続してろ過性能（ろ過水量）が低下した場合には、適宜逆圧洗浄を実施することができる。
逆圧洗浄は、限外濾過膜モジュール３に接続した逆圧洗浄ライン（図示せず）から、限外濾過膜モジュール５によるろ過水（稚エビ養殖用海水）または原水（天然海水）を限外濾過膜モジュール３に圧入して実施する。
When the filtration performance (amount of filtrate) decreases during continued filtration operation using the ultrafiltration membrane module 3, back pressure washing can be carried out as appropriate.
Backpressure cleaning is performed by pressurizing filtered water (seawater for cultivating juvenile shrimp) or raw water (natural seawater) through the ultrafiltration membrane module 5 into the ultrafiltration membrane module 3 through a backpressure cleaning line (not shown) connected to the ultrafiltration membrane module 3.
本発明の稚エビ養殖用海水の調製方法は、養殖水量が合計で１００ｍ3以下の養殖場に対して適用することができる。
本発明の稚エビ養殖用海水の調製方法により得た稚エビ養殖用海水を使用して養殖するときは、一水槽当たり３０～１００万匹の稚エビの入った容量３～１０ｍ3の養殖水槽を複数設置して養殖することができる。
The method for preparing seawater for culturing juvenile shrimp of the present invention can be applied to a farm having a total culture water volume of 100 m3 or less .
When shrimp are cultured using the seawater for culturing shrimp obtained by the method for preparing seawater for culturing shrimp of the present invention, shrimp can be cultured by installing a plurality of culture tanks, each tank containing 300,000 to 1,000,000 shrimp. The capacity of each tank is 3 to 10 m3.
各実施形態における各構成およびそれらの組み合わせなどは一例であって、本発明の主旨から逸脱しない範囲で、適宜構成の付加、省略、置換およびその他の変更が可能である。本発明は、実施形態によって限定されることはなく、特許請求の範囲によってのみ限定される。 The configurations and combinations thereof in each embodiment are merely examples, and additions, omissions, substitutions, and other modifications of configurations are possible as appropriate without departing from the spirit of the present invention. The present invention is not limited to the embodiments, but is limited only by the claims.
実施例１
図１に示す調製フローにより稚エビ養殖用海水を調製した。
天然海水は、メコン川の河口から南に１００ｋｍの海域から採取したものを使用した。
マイクロフィルター３は孔径５μmのものを使用し、活性炭フィルター４はカートリッジ型活性炭フィルターを使用した。
限外濾過膜モジュール５は、ダイセン・メンブレン・システムズ株式会社の商品名ＭＯＬＳＥＰ（品番FG06HFC-FUS1041，中空糸型限外濾過膜，膜材質ポリエーテルサルホン，分画分子量100,000，中空糸膜内径0.4mm，膜面積７ｍ2，外圧式）を使用した。
限外濾過膜モジュール５のろ過水は、ろ過水タンクに貯水した。
限外濾過膜モジュール５のろ過は、ろ過流量１．５ｍ3／ｈｒで２４０分間運転した。ろ過流量の合計が６ｍ3の時点で、原水とろ過水（稚エビ養殖用海水）中の一般細菌を測定した。
Example 1
Seawater for culturing juvenile shrimp was prepared according to the preparation flow shown in FIG.
The natural seawater used was collected from an area 100 km south of the mouth of the Mekong River.
The microfilter 3 used had a pore size of 5 μm, and the activated carbon filter 4 used was a cartridge type activated carbon filter.
The ultrafiltration membrane module 5 used was MOLSEP (product number FG06HFC-FUS1041, hollow fiber ultrafiltration membrane, membrane material polyethersulfone, molecular weight cutoff 100,000, hollow fiber membrane inner diameter 0.4 mm, membrane area 7 m 2 , external pressure type) manufactured by Daisen Membrane Systems Co., Ltd.
The filtrate from the ultrafiltration membrane module 5 was stored in a filtrate tank.
The ultrafiltration membrane module 5 was operated for 240 minutes at a filtration flow rate of 1.5 m 3 /hr. When the total filtration flow rate reached 6 m 3 , the number of general bacteria in the raw water and the filtrate (seawater for cultivating juvenile shrimp) was measured.
一般細菌の測定は、滅菌シャーレの寒天培地に１ｍｌのサンプル水（原水または稚エビ養殖用海水）を添加し、４０℃で４８時間保持した後の状態を観察した。結果を図３に示す。
図３（ａ）は原水であり、細菌叢が確認できたが、図３（ｂ）の稚エビ養殖用海水を添加培養した方は、全く細菌叢が確認できなかった。
この結果から、実施例１により調製された稚エビ養殖用海水は、稚エビ養殖用海水として安全性が高いことが確認された。また、薬剤も使用していないため、稚エビに対する薬剤残留の問題も無く、養殖後の稚エビ養殖用海水の排水処理も容易である。
For the measurement of general bacteria, 1 ml of sample water (raw water or seawater for culturing juvenile shrimp) was added to an agar medium in a sterilized petri dish, and the condition was observed after keeping it at 40° C. for 48 hours. The results are shown in FIG.
Figure 3(a) shows the raw water, in which bacterial flora could be confirmed, but in Figure 3(b), in which seawater for cultivating juvenile shrimp was added and cultured, no bacterial flora was confirmed at all.
From these results, it was confirmed that the seawater for cultivating juvenile shrimp prepared in Example 1 is highly safe for use as seawater for cultivating juvenile shrimp. In addition, since no chemicals are used, there is no problem of chemical residues in the juvenile shrimp, and the seawater for cultivating juvenile shrimp after cultivation can be easily discharged.
図１に示すフローで調製した稚エビ養殖用海水を使用して、４，５ｍ3の水槽中で約８０万匹の稚エビを養殖した。
その結果、大きな養殖池に移すことができる程度（卵の発生から１８日後のポストラーバ体長約１０ｍｍ）まで成長させたときの生存率は８０％以上であった。
なお、図２のフローで調製した稚エビ養殖用海水を使用して同様に稚エビを養殖した場合の生存率は約５０％であり、これは殺菌剤（次亜塩素酸ソーダ水溶液）の影響を受けたものと考えられた。
Using the seawater for cultivating juvenile shrimp prepared according to the flow shown in Figure 1, approximately 800,000 juvenile shrimp were cultivated in a 4.5 m3 tank.
As a result, when the eggs were grown to a size where they could be transferred to a large aquaculture pond (postlarva body length of about 10 mm 18 days after egg hatching), the survival rate was 80% or more.
When juvenile shrimp were cultured in the same manner using the seawater for culturing juvenile shrimp prepared according to the flow chart in Figure 2, the survival rate was about 50%, which was considered to be due to the influence of the disinfectant (aqueous solution of sodium hypochlorite).
本発明の稚エビ養殖用海水の調製方法は、稚エビの養殖に使用する稚エビ養殖用海水の調製方法のほか、他の海洋生物の養殖水や観賞魚用の飼育水の調製方法としても利用することができる。 The method for preparing seawater for cultivating juvenile shrimp of the present invention can be used not only for cultivating juvenile shrimp, but also for cultivating other marine organisms and for preparing water for aquarium fish.
１ 船（天然海水を採取する船）
２ 天然海水タンク
３ マイクロフィルター
４ 活性炭フィルター
５ 限外濾過膜モジュール
６ 稚エビ養殖水槽または稚エビ養殖用海水タンク
１０ 第１天然海水ライン
１１ 第２天然海水ライン
１２ 第１前処理水ライン
１３ 第２前処理水ライン
１４ ろ過水ライン
１５ 薬剤供給ライン
1. Ship (ship for collecting natural seawater)
2 Natural seawater tank 3 Microfilter 4 Activated carbon filter 5 Ultrafiltration membrane module 6 Shrimp larvae culture tank or seawater tank for cultivating shrimp 10 First natural seawater line 11 Second natural seawater line 12 First pretreated water line 13 Second pretreated water line 14 Filtrate water line 15 Chemical supply line
Claims (5)
天然海水を前処理する工程と、
前記天然海水の前処理水を限外ろ過膜モジュールによりろ過して稚エビ養殖用海水を得る工程を有しており、
原料となる天然海水、前処理水および稚エビ養殖用海水に対して、殺菌剤、抗生物質を含む薬剤を投与しない、稚エビ養殖用海水の調製方法であって、
前記限外ろ過膜モジュールが、ポリエーテルサルホンからなる中空糸膜を使用したものであり、前記中空糸膜が内径０．６ｍｍ以下で、前記限外ろ過膜モジュールに収容された中空糸膜の合計の有効膜面積が４～１０ｍ 2 のものである、稚エビ養殖用海水の調製方法。 A method for preparing seawater for cultivating juvenile shrimp, comprising the steps of:
A step of pretreating natural seawater;
The method further comprises a step of filtering the pretreated natural seawater through an ultrafiltration membrane module to obtain seawater for cultivating juvenile shrimp,
A method for preparing seawater for cultivating juvenile shrimp, in which no chemicals including bactericides and antibiotics are administered to raw natural seawater, pretreated seawater, and seawater for cultivating juvenile shrimp,
the ultrafiltration membrane module uses hollow fiber membranes made of polyethersulfone, the hollow fiber membranes have an inner diameter of 0.6 mm or less, and the total effective membrane area of the hollow fiber membranes contained in the ultrafiltration membrane module is 4 to 10 m2 .
前記複数の稚エビ養殖水槽が、一水槽当たり３０～１００万匹の稚エビの入った容量３～１０ｍ3の養殖水槽群である、稚エビの養殖方法。 A method for cultivating juvenile shrimp, comprising preparing seawater for cultivating juvenile shrimp by the method for preparing seawater for cultivating juvenile shrimp according to any one of claims 1 to 4 , and then supplying the seawater for cultivating juvenile shrimp to a plurality of aquaculture tanks for cultivating juvenile shrimp,
The method for cultivating juvenile shrimp, wherein the plurality of juvenile shrimp cultivating tanks are a group of cultivating tanks each having a capacity of 3 to 10 m3 and containing 300,000 to 1,000,000 juvenile shrimp per tank.
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| JP2020013208A JP7500205B2 (en) | 2020-01-30 | 2020-01-30 | Method for preparing seawater for culturing juvenile shrimp |
| PCT/JP2021/002587 WO2021153543A1 (en) | 2020-01-30 | 2021-01-26 | Method for preparing seawater for juvenile shrimp farming |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005313151A (en) | 2004-03-30 | 2005-11-10 | Toray Ind Inc | Water treatment method |
| JP2007237016A (en) | 2006-03-06 | 2007-09-20 | Daicen Membrane Systems Ltd | Seawater filtering method |
| CN104445809A (en) | 2014-11-07 | 2015-03-25 | 盐城工学院 | Prawn farming circulating water treatment technology |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2520805B2 (en) * | 1991-10-02 | 1996-07-31 | 株式会社荏原製作所 | Water filtering method and device |
| JPH08141565A (en) * | 1994-11-24 | 1996-06-04 | Kansai Electric Power Co Inc:The | Water purifying apparatus |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005313151A (en) | 2004-03-30 | 2005-11-10 | Toray Ind Inc | Water treatment method |
| JP2007237016A (en) | 2006-03-06 | 2007-09-20 | Daicen Membrane Systems Ltd | Seawater filtering method |
| CN104445809A (en) | 2014-11-07 | 2015-03-25 | 盐城工学院 | Prawn farming circulating water treatment technology |
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| WO2021153543A1 (en) | 2021-08-05 |
| JP2021118680A (en) | 2021-08-12 |
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