Development of the sediment and water quality management strategies for the Salt-water River,Taiwan |
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| Institution: | 1. Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan;2. Department of Civil and Environmental Engineering, University of Utah, Salt Lake City, UT, USA;1. State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, PR China;2. Key Laboratory of Southwest Resources Exploitation and Environmental Hazards Controlling Engineering of Education Ministry, Chongqing University, Chongqing 400030, PR China;3. School of Resources and Environmental Science, Chongqing University, Chongqing 400044, PR China;1. LUNAM – IFSTTAR – GERS/LEE, CS 4, Route de Bouaye, 44344 Bouguenais Cedex, France;2. Nantes Métropole, Opérateur Public Assainissement, 44923 Nantes Cedex 9, France;1. Division of Material Science and Production Engineering, Graduate school of Engineering, Fukuoka Institute of Technology, Fukuoka, 811-0295, Japan;2. Department of Life, Environment and Materials Science, Faculty of Engineering, Fukuoka Institute of Technology, Fukuoka, 811-0295, Japan;1. Chemical Food Safety Group, Nestlé Research Center, Lausanne, Switzerland;1. Ghent University, Biology Department, Marine Biology Research Group, Krijgslaan 281, S8, 9000 Ghent, Belgium;2. Iranian National Institute for Oceanography and Atmospheric Science (INIOAS), 9, Etemadzadeh Avenue, West Fatemi Street, Tehran, Iran;3. Marine Biology Station Piran, National Institute of Biology, Fornace 41, 6330 Piran, Slovenia;4. Department of Limnology and Oceanography, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria;5. UMR CNRS 6112 LPG-BIAF Bio-Indicateurs Actuels et Fossiles, Université d''Angers, 2 Boulevard Lavoisier, 49045 Cedex Angers, France |
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| Abstract: | The Salt-water River watershed is one of the major river watersheds in the Kaohsiung City, Taiwan. Water quality and sediment investigation results show that the river water contained high concentrations of organics and ammonia–nitrogen, and sediments contained high concentrations of heavy metals and organic contaminants. The main pollution sources were municipal and industrial wastewaters. Results from the enrichment factor (EF) and geo-accumulation index (Igeo) analyses imply that the sediments can be characterized as heavily polluted in regard to Cd, Cr, Pb, Zn, and Cu. The water quality analysis simulation program (WASP) model was applied for water quality evaluation and carrying capacity calculation. Modeling results show that the daily pollutant inputs were much higher than the calculated carrying capacity (1050 kg day?1 for biochemical oxygen demand and 420 kg day?1 for ammonia–nitrogen). The proposed watershed management strategies included river water dilution, intercepting sewer system construction and sediment dredging. |
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