Consideration Focusing on the Dormant Cells of the Musty Odor-producing Cyanobacteria that Occurred in the Susobana Dam Lake

DOI
  • YAJIMA Yuichi
    長野市上下水道局　浄水課　水質担当主査（東北大学大学院　博士課程後期）
  • ARAKI Norihito
    長野市上下水道局　下水道施設課　水質担当係長
  • KUBOMIYA Takayuki
    長野市上下水道局　浄水課　水質担当係長
  • NISHIZAWA Motoki
    長野市上下水道局　浄水課　水質担当係長
  • ONO Atsuo
    長野市上下水道局　浄水課　水質担当水質専門官
  • NISHIMURA Osamu
    東北大学大学院　工学研究科　教授・工博

Bibliographic Information

Other Title
  • 裾花ダム湖において発生したかび臭産生藍藻類の休眠細胞に着目した考察

Abstract

A musty odor-producing blue-green algae, Anabaena (Dolicospermum ), outbreaks at Susobana Dam Lake in Nagano City, and a musty odor was produced at the tap water source. We investigated the cause of the outbreak, focusing on dormant cells of the genus Anabaena . Dormant cell germination experiments from the bottom mud of the dam were conducted, and field data were analyzed for the water temperature and the vertical distribution of the number of Anabaena colonies. As a result, it was suggested possibility that the dredging performed the year before the outbreak of blue-green algae accumulated dormant cells on the surface layer of the sediment and germinated as the water temperature rose, and the blue-green algae of the genus Anabaena may have occurred. At the same time, we will report a case study of sudden musty odor damage in an environment with limited equipment and personnel.

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Keywords

Details 詳細情報について

  • CRID
    1390856583391220096
  • DOI
    10.34566/jwwa.90.10_3
  • ISSN
    24358673
    03710785
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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