報告書番号

V11007

タイトル（和文）

利水施設における淡水付着性二枚貝の汚損対策に関する文献調査

タイトル（英文）

Antifouling methods for freshwater attached bivalves in water intake facilities.

概要 （図表や脚注は「報告書全文」に掲載しております）

外来付着性二枚貝のカワヒバリガイは、国内の淡水利水施設において汚損被害を生じさせている。本種の汚損対策として主に除貝処理が行われているが、一部設備では実施が困難なことや廃棄物が生じることから、より効率的な対策の導入が求められている。そこで、国内外から淡水付着性二枚貝の汚損対策に関する文献101編（国内はわずか7編）を収集し、国内で適用可能な汚損対策の抽出を試みた。本文献調査から侵入防止対策が４法、付着防止対策が６法、除去対策が４法の計１４法確認された。対策効果、技術的完成度、コスト、実施事例からストレーナー法、忌避金属、防汚塗料、紫外線、薬剤、温水処理の６法が、除貝処理に替わる効率的対策として挙げられた。

概要 （英文）

Literate surveys were conducted to evaluate the antifouling methods for the biofouling by freshwater nuisance organisms in water intake facilities in Japan. Mechanical cleaning of attached bivalves has been mainly conducted and there are few trials for antifouling in Japanese freshwater intake facilities. The 101 papers published between 1976 and 2011 showed that there were 14 antifouling methods of freshwater attached bivalves, and they were divided into three types: intrusion prevention, settlement prevention and physical treatment. Intrusion prevention includes strainers, infiltration galleries with sand filters, physical trap and attractant pheromone trap. Recusal metals, antifouling coating, ultraviolet lights, acoustics, electric currents and chemicals are typical for settlement prevention. Major physical treatments are thermal shock, desiccation, freezing and mechanical cleanings. Strainers, avoidance metals (copper alloy), antifouling coatings (copper I oxide and silicone), chemicals (ozone and chlorine), ultraviolet light and heat shock are considered to be applicable to Japanese facilities, based on antifouling efficiencies, technical perfection levels, installation and running costs, and existences of practical example.

報告者

キーワード