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Title: Chemical Contaminants in Urban Runoff: Characteristics, Sources and Low Cost Treatment
Keywords: Trace Elements, Stormwater, Street Dust, Biosorption, Statistical Analysis, Modeling
Issue Date: 1-Feb-2010
Citation: UMID MAN JOSHI (2010-02-01). Chemical Contaminants in Urban Runoff: Characteristics, Sources and Low Cost Treatment. ScholarBank@NUS Repository.
Abstract: Limited fresh water resources and growing demand of potable water in urban areas have highlighted the need for improved management of the urban water cycle. In particular, stormwater (surface runoff) provides a potential resource that can augment urban water supplies. However, ultilization of stormwater for water supply depends on its quality, which in turn is influenced by the type and intensity of human activities taking place in the local and regional environment. The quality of runoff generated from different urban surfaces is influenced by the cumulative effects of many, varied sources including heavy and light industry, road runoff and spills, and residential runoff. Knowledge about the type and occurrence of contaminants in urban runoff is currently lacking. Effective long-term stromwater management requires detailed and accurate information about critical environmental parameters in the context of sustainable development. The broad aim of this doctoral study was to identify current land uses within urban catchment in Singapore and determine their impact on the quality of stormwater. The study also sought to decontaminate urban runoff with the use of low-cost biomaterials by conducting batch and column experiments. These aims were addressed through the following activities: (a) Determination of chemical characteristics of runoff in different urban surfaces with special attention to storm events; (b) Fate and transport of urban street dust; and (c) Removal of chemical contaminants in urban runoff by low-cost materials. Results obtained from this study form a scientific basis for assessment of the use of stormwater for both potable and non-potable purposes.
Appears in Collections:Ph.D Theses (Open)

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