秋田県大比立鉱山下流域の河川中亜鉛に関する鉱山坑廃水の影響評価

DOI Web Site Web Site 被引用文献2件 参考文献14件

書誌事項

タイトル別名
  • Evaluation of Zn in Acid Mine Drainage in the Ohitachi Mining Area, Akita Prefecture, Japan
  • アキタケンダイヒリツコウザン カ リュウイキ ノ カセン チュウ アエン ニ カンスル コウザンコウ ハイスイ ノ エイキョウ ヒョウカ

この論文をさがす

抄録

<p>Environmental impact assessment was conducted at the Ohitachi Mine (Cu-Zn-Pb) located in Odate, Akita Prefecture, Japan. Zn concentration in river water exceeded the environmental standard (30 µg/L) even in the downstream of the Mine. Here, treatment facility for acid mine drainage had already constructed, however, the capacity of the facility was not enough to protect the environmental standard of Zn in the downstream. We calculated Zn load (mg/s) and concentration of Zn (µg/L) in individual watershed along the mainstream and branches. Several watersheds which emitted high concentration of Zn were recognized in the mining area. Particularly, discharge of Zn along the mainstream and watershed which includes open adit shows strong effects to concentration and load of Zn in river water. Based on concentration of Zn in river water and flow rate, we calculated mass balance of Zn load between sampling points. In order to protect environmental standard of Zn (30 µg/L) around village in downstream, we have to reduce 4.22 mg/s of Zn load. In that case, we have to reduce discharge of Zn along the mainstream and from open adit in the mining area. Based on the load and concentration of Zn in individual watershed around the mining area, quantitative evaluation is possible to estimate environmental risks of heavy metals in the river water caused by abundant mine.</p>

収録刊行物

  • 資源と素材

    資源と素材 134 (3), 46-52, 2018

    一般社団法人 資源・素材学会

被引用文献 (2)*注記

もっと見る

参考文献 (14)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ