水環境

[II-177] Investigation of flow and water quality dynamics for elucidating the generation mechanism of mold odor substance 2-MIB in dam lake water

〇Katsuto Dono¹, Hina Omuro², Takeshi Kurokawa³ (1. National Institute of Technology, Kure College, Advanced Course, 2.Graduate School of Engineering, Tohoku University, 3.National Institute of Technology, Kure College)

Keywords:Dam lake, Musty odor, 2-MIB, Actinomycetes, Turbidity, ADCP

In the Yashiyo Lake, which is the target of this study, there is a problem that mold odor is generated from 2-MIB derived from actinomycetes. In this study, we investigate the distribution of suspended solids in dam lakes and the characteristics of their changes. As a result of the flow observation, it flowed in the lake bottom at the shallow upstream side and horizontally at the depth of 9m in the temperature stratification in the deep downstream side. The influent from the upstream had relatively few turbid components.