Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/143863
Title: WATER AND SEDIMENT QUALITIES OF SUNGEI ULU PANDAN SEDIMENTATION POND
Authors: LIM ZHEN FEI, VITO
Keywords: Urban stormwater management, urban stormwater runoff, wet detention basin, sedimentation pond, water quality analysis, sediment quality analysis
Issue Date: 2017
Citation: LIM ZHEN FEI, VITO (2017). WATER AND SEDIMENT QUALITIES OF SUNGEI ULU PANDAN SEDIMENTATION POND. ScholarBank@NUS Repository.
Abstract: Urbanization has led to the degradation of urban stormwater quality, negatively impacting downstream aquatic environments. Stormwater sedimentation ponds, also known as wet detention basins are common stormwater management infrastructures constructed to improve stormwater runoff quality. Current literature on sedimentation ponds have emphasized on the improvement of structural designs and pollutant removal efficiencies. However, occurrences of poor ecological conditions such as eutrophication, heavy metal remobilization and anoxic development in the basins raises the need to better understand water and sediment qualities and chemical processes within the basins. Thus, this thesis will use the Sungei Ulu Pandan sedimentation pond in Singapore as a case study to analyze and monitor water and sediment qualities. Samples are collected during wet and dry weather events across a period of three months, from June to September 2016, to analyze and monitor their characteristics during different weather conditions. Analysis of water samples includes the measurement of basic water parameters, ion chromatography and total carbon analysis while total organic carbon and heavy metal analysis is conducted on sediment samples. Results show that the catchment area is relatively clean, with consistent water quality observed in the basin during rain events. However, results suggest that anoxic conditions may develop in the basin over extended periods of dry weather. The sedimentation pond also experienced anoxic conditions on 2 August 2016, where high salt (sodium chloride) content in water samples suggested that there was an event of food waste introduction, causing the development of anoxic condition. As urban stormwater quality and sedimentation pond conditions are influenced by local factors, it is recommended that such factors are understood first and taken into consideration for future sedimentation pond designs. To ensure the effectiveness and sustainability of urban stormwater management, social aspects (community awareness) is recommended to be included in both design and execution phases.
URI: http://scholarbank.nus.edu.sg/handle/10635/143863
Appears in Collections:Bachelor's Theses (Restricted)

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