AN UNSTEADY UNIT LOAD OF ROOF DEPOSIT
A unit effluent load has been widely used for evaluation of pollutant loads flowing into eutrophic lakes and inner bays, although the applicability of the unit effluent load for non-point sources has been severely limited. This study presents newly an unsteady unit effluent load for roof-deposit loa...
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| Published in | PROCEEDINGS OF HYDRAULIC ENGINEERING Vol. 52; pp. 271 - 276 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
Japan Society of Civil Engineers
2008
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0916-7374 1884-9172 |
| DOI | 10.2208/prohe.52.271 |
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| Abstract | A unit effluent load has been widely used for evaluation of pollutant loads flowing into eutrophic lakes and inner bays, although the applicability of the unit effluent load for non-point sources has been severely limited. This study presents newly an unsteady unit effluent load for roof-deposit load, one of non-point sources in urban area, using its association with dry fallout. For this purpose, we have conducted a long-term, continuous monitoring of the amount of sediments and nutrients on the roof (SSroof, TNroof and TProof) during two years. The measured results indicate the good correlations not only between SSroof and dry fallout, but also between SSroof and TNroof (TProof) . The unsteady effluent load is described with these relations and measured SPM. This method was applied to evaluate the temporal variations of roof-deposit loads, showing the fundamental validity of the present method. |
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| AbstractList | A unit effluent load has been widely used for evaluation of pollutant loads flowing into eutrophic lakes and inner bays, although the applicability of the unit effluent load for non-point sources has been severely limited. This study presents newly an unsteady unit effluent load for roof-deposit load, one of non-point sources in urban area, using its association with dry fallout. For this purpose, we have conducted a long-term, continuous monitoring of the amount of sediments and nutrients on the roof (SSroof, TNroof and TProof) during two years. The measured results indicate the good correlations not only between SSroof and dry fallout, but also between SSroof and TNroof (TProof) . The unsteady effluent load is described with these relations and measured SPM. This method was applied to evaluate the temporal variations of roof-deposit loads, showing the fundamental validity of the present method. |
| Author | NIHEI, Yasuo YOSHIDA, Takushi |
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| References | 7) 二瓶泰雄, 吉田拓司, 砂田岳彦: 屋根面堆積負荷の非定常挙動に関する連続観測, 水環境学会誌, Vol. 29, No. 11, pp. 755-760, 2006. 11) http://soramame.taiki.go.jp/. 2) 国松孝男, 村岡浩爾: 河川汚濁のモデル解析, 技報堂出版, pp. 1-266, 1989. 10) 吉田拓司, 二瓶泰雄, 柴田秀爾, 上原浩: 印旛沼流域における市街地面源負荷の排出・流下調査, 土木学会年次学術講演会講演要旨集, Vol. 62, pp. 293-294, 2007. 4) 中央環境審議会: 第6次水質総量規制の在り方について (答申) , 21p, 2005. 1) 山田淳: 面源負荷-その現状と課題-, 環境技術, Vol. 29, No. 7, pp. 496-501, 2000. 5) 国土環境 (株) : 非特定汚染源対策計画検討調査, 2004. 6) 水文・水資源学会編: 水文・水資源ハンドブック, 朝倉書店, pp. 164-168, 1997. 8) 和田安彦: ノンポイント汚染源のモデル解析, 技報堂出版, pp. 1-214, 1990. 3) 環境庁水質保全局水質管理課: 非特定汚染源負荷調査マニュアル, pp. 23-106, 1990. 9) 二瓶泰雄, 砂田岳彦, 水野智之: 模擬降雨流出水採取法に基づく路面塵埃環境の時間的・空間的変動特性の把握, 水環境学会誌, Vol. 29, No. 5, pp. 261-268, 2006. 12) http://www.jhf.go.jp/research/pdf/shuyoudata_h14-5.pdf |
| References_xml | – reference: 8) 和田安彦: ノンポイント汚染源のモデル解析, 技報堂出版, pp. 1-214, 1990. – reference: 5) 国土環境 (株) : 非特定汚染源対策計画検討調査, 2004. – reference: 10) 吉田拓司, 二瓶泰雄, 柴田秀爾, 上原浩: 印旛沼流域における市街地面源負荷の排出・流下調査, 土木学会年次学術講演会講演要旨集, Vol. 62, pp. 293-294, 2007. – reference: 12) http://www.jhf.go.jp/research/pdf/shuyoudata_h14-5.pdf – reference: 1) 山田淳: 面源負荷-その現状と課題-, 環境技術, Vol. 29, No. 7, pp. 496-501, 2000. – reference: 4) 中央環境審議会: 第6次水質総量規制の在り方について (答申) , 21p, 2005. – reference: 2) 国松孝男, 村岡浩爾: 河川汚濁のモデル解析, 技報堂出版, pp. 1-266, 1989. – reference: 9) 二瓶泰雄, 砂田岳彦, 水野智之: 模擬降雨流出水採取法に基づく路面塵埃環境の時間的・空間的変動特性の把握, 水環境学会誌, Vol. 29, No. 5, pp. 261-268, 2006. – reference: 3) 環境庁水質保全局水質管理課: 非特定汚染源負荷調査マニュアル, pp. 23-106, 1990. – reference: 6) 水文・水資源学会編: 水文・水資源ハンドブック, 朝倉書店, pp. 164-168, 1997. – reference: 7) 二瓶泰雄, 吉田拓司, 砂田岳彦: 屋根面堆積負荷の非定常挙動に関する連続観測, 水環境学会誌, Vol. 29, No. 11, pp. 755-760, 2006. – reference: 11) http://soramame.taiki.go.jp/. |
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| SubjectTerms | atmospheric environment dry fallout non-point source roof deposit unsteady unit load |
| Title | AN UNSTEADY UNIT LOAD OF ROOF DEPOSIT |
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