| 研究課題/領域番号 |
20J12048
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| 研究種目 |
特別研究員奨励費
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| 配分区分 | 補助金 |
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| 応募区分 | 国内 |
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| 審査区分 |
小区分22060:土木環境システム関連
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| 研究機関 | 東京大学 |
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研究代表者 |
POOPIPATTANA CHOMPHUNUT 東京大学, 工学系研究科, 特別研究員(PD)
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| 研究期間 (年度) |
2020-04-24 – 2022-03-31
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| 研究課題ステータス |
完了 (2021年度)
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| 配分額 *注記 |
1,700千円 (直接経費: 1,700千円)
2021年度: 1,040千円 (直接経費: 800千円、間接経費: 240千円)
2020年度: 900千円 (直接経費: 900千円)
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| キーワード | combined sewer overflow / fecal contamination / coastal area / water quality model / PPCPs / coastal water |
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| 研究開始時の研究の概要 |
Combined sewer overflows (CSOs) are considered as one of important pollution sources into the receiving water, which deteriorate water quality and pose risks to human health. This research aim to investigate the distribution and behavior of two types of markers including chemical markers (PPCPs: Pharmaceuticals and Personal Care Products) and microbial markers (fecal bacteria and bacteriophages) after rainfall events in order to evaluate fecal contamination and potential risks in Tokyo waterfront area.
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| 研究実績の概要 |
The aim of this study is to understand and predict the distribution of sewage markers in Tokyo coastal area after CSO (combined sewer overflow) events. Multiple water sampling campaigns were conducted after rainfall events to collect data including basic water parameters, PPCPs and E. coli concentrations.
A 3D water quality model was developed to reproduce PPCPs and E. coli concentration in the area. The accuracy of model prediction was improved by applying decay/inactivation rate by sunlight and salinity, which were obtained from laboratory experiments. A large number of simulations were conducted to predict temporal change of E. coli concentration after various rainfall events and under different tidal conditions. Simulation results were compiled into a database including time and level of contamination. The purpose of the database is to be used for water safety forecast system and better CSO events characterization in the future.
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| 現在までの達成度 (段落) |
令和3年度が最終年度であるため、記入しない。
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| 今後の研究の推進方策 |
令和3年度が最終年度であるため、記入しない。
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