Determination Of Oxygen Demand Of Different Types Of Sediment From The Sampadi River

Ng, Chia Chia (2009) Determination Of Oxygen Demand Of Different Types Of Sediment From The Sampadi River. [Final Year Project Report] (Unpublished)

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Abstract

Sediment Oxygen Demand (SOD) is the rate of oxygen consumption by all organisms in the sediment. Numerous cases of water pollution create a potential public health problem as well as threaten the aquatic life. SOD is an important tool to test water quality and it affects the dissolved oxygen (DO) in water resources. The main objective of this study was to determine the SOD of sediment from a river thaI received shrimp pond effluent, household discharge, and relatively unpolluted sediment. Water and sediment samples were collected from fi ve stations of the Sampadi River for analysis of SOD. Besides, sediment collected and was also analyzed for organic matter, organic carbon, nutrients and particle sizes. SOD:!o ranged from 0,125 to 0.784 g O:!/m2/day for the entire study area. Among the fi ve stations ofSampadi River, S4 showed the second highest SOO::1O mean value ofOAI8 g O:lm2/day. Furthermore, this station also had the highest value for phosphorus, organic matter and organic carbon. The results showed positive correlation between SOD20 and total phosphorus (mg/kg), nitrogen (%), organic matter (%), organic carbon (%) and particle sizes (%) in bottom sediment of studied stations. S2 showed the highest total Kjeldah! nitrogen percentage of 0.998 % was likely doe to the large discharge of shrimp farm effluents since this station is located near to a shrimp farm.

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