Present Status and Feature of Groundwater Contamination by Nitrate-nitrogen in Kumamoto City
スポンサーリンク
概要
- 論文の詳細を見る
Nitrate-nitrogen (NO3-N) contamination in groundwater has been worldwide concern, and especially it is a critical issue for the region depending on groundwater for water supply. Kumamoto city depends on only groundwater for all of water supply, however, lowering groundwater level and increasing NO3-N concentration have been revealed recently. In this study, the current situation of NO3-N contamination in the groundwater of Kumamoto city was investigated. Nitrate-nitrogen was detected in the range from 0.2 to 5.8 mg/l in the groundwater of deep wells at 22 points out of total 30 sampling points including drinking water resource. The NO3-N concentration was closely related to the location of wells and groundwater flow. The upward tendency in NO3-N concentration was recognized at a number of wells for recent 20 years, and it was considered due to the agricultural activity in the corresponding and their upstream areas.
- Japan Society on Water Environmentの論文
著者
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Kawagoshi Yasunori
Department of Civil and Environmental Engineering, Kumamoto University
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MAEDA Kaori
Kumamoto City Waterworks Bureau, Japan.
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KAWAGOSHI Yasunori
Department of Civil and Environmental Engineering, Kumamoto University, Japan.
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TOMIIE Kazuo
Department of Civil and Environmental Engineering, Kumamoto University, Japan.
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IWASA Yasuhiro
Kumamoto City Waterworks Bureau, Japan.
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OTSUZUKI Michiko
Kumamoto City Waterworks Bureau, Japan.
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YUNOUE Tsutomu
Kumamoto City Waterworks Bureau, Japan.
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KAKIMOTO Ryuji
Department of Civil and Environmental Engineering, Kumamoto University, Japan.
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KAKIMOTO Ryuji
Department of Architecture and Civi Engineering, Kumamoto University
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