JP5175475B2 - 水生生物の防除方法および防除装置 - Google Patents
水生生物の防除方法および防除装置 Download PDFInfo
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- JP5175475B2 JP5175475B2 JP2007010337A JP2007010337A JP5175475B2 JP 5175475 B2 JP5175475 B2 JP 5175475B2 JP 2007010337 A JP2007010337 A JP 2007010337A JP 2007010337 A JP2007010337 A JP 2007010337A JP 5175475 B2 JP5175475 B2 JP 5175475B2
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Description
適用対象の流路が管状部材の場合、カテーテル方式が採用できれば、閉鎖弁の有無や口径の大小に関係なく、密閉領域を形成できる。
過飽和溶存気体状態の実現手法としては、例えば、別途ガス添加−加圧等により過飽和溶存気体状態の水を調整し、密閉領域に導入すること、水を密閉した密閉領域にガスを導入−加圧することにより過飽和溶存気体状態の水を作ること、等が考えられる。また、その効果の向上手法としては、例えば、密閉領域を加圧すること、密閉領域の温度を上昇させること、等が考えられる。ここで、密閉領域を加圧すると、溶融できるガスの量が増加し過飽和溶存気体状態を高くすることができる。また、密閉領域の温度を上昇させると、水生生物の代謝が促進され体内へのガスの取り込み速度の上昇を期待できる。なお温度上昇は、密閉領域の加圧による場合と、ヒータ等を使用する場合とがある。
(d)密閉状態を解除
過飽和溶存気体状態の水を放置するだけでも気泡が発生し水生生物にダメージを与えることができると考えられるが、密閉領域の密閉を解除して減圧状態の発生あるいは加圧減圧の繰り返しにより、より効果的に気泡を発生させることができる。
2 密閉手段
3 密閉領域
4 水
5 ガス溶存量増加手段
6 気泡化手段
Claims (3)
- 防除対象の水生生物が生息する領域に過飽和水を導入して密閉することでその領域内の水のガス溶存量を増加させて前記水生生物の体内のガス溶存量を増加させた後、前記領域内の水のガス許容溶存量を減少させて前記水生生物の体内に溶存できなくなったガスの気泡を生じさせることを特徴とする水生生物の防除方法。
- 前記領域内を加圧しながら前記領域内のガス溶存量を増加させることを特徴とする請求項1記載の水生生物の防除方法。
- 防除対象の水生生物が生息する領域を密閉する密閉手段と、前記領域に過飽和水を導入することで前記領域内の水のガス溶存量を増加させるガス溶存量増加手段と、前記領域内の水のガス許容溶存量を減少させる気泡化手段とを備えることを特徴とする水生生物の防除装置。
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JP2007010337A JP5175475B2 (ja) | 2007-01-19 | 2007-01-19 | 水生生物の防除方法および防除装置 |
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JP2007010337A JP5175475B2 (ja) | 2007-01-19 | 2007-01-19 | 水生生物の防除方法および防除装置 |
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JP2008173579A JP2008173579A (ja) | 2008-07-31 |
JP5175475B2 true JP5175475B2 (ja) | 2013-04-03 |
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JP2007010337A Active JP5175475B2 (ja) | 2007-01-19 | 2007-01-19 | 水生生物の防除方法および防除装置 |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP6749049B2 (ja) * | 2014-12-16 | 2020-09-02 | スミリーフ株式会社 | 海中生物駆除装置 |
TWI759169B (zh) | 2021-04-15 | 2022-03-21 | 閎康科技股份有限公司 | 樣品分析方法及樣品製備方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH10230247A (ja) * | 1997-02-19 | 1998-09-02 | Mitsubishi Heavy Ind Ltd | 加圧による水中微生物の殺傷方法および装置 |
JPH11300337A (ja) * | 1998-04-24 | 1999-11-02 | Mitsubishi Heavy Ind Ltd | 加圧気泡水式水域浄化システム |
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