EESC 2203 Lecture Notes - Lecture 5: Total Suspended Solids, Biochemical Oxygen Demand, Total Dissolved Solids
14 Mar 2016
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Document Summary
Can impact organisms, photosynthesis, metabolic rates, increases prone to parasites. Sources of thermal pollution: power plants, logging - removal of riparian vegetation, runoff from urban areas, dams, sedimentation. 60-70% of total biodiversity can be lost from climate change. Dissolved oxygen is considered based on percentage saturation and concentration (mg/l) River water tends to be more in range that saltwater. 100% saturation - how much that river can hold for that temperature. % saturation is indicative of what"s going on during percent saturation. Can get values of over 100% or so. Do comes from photosynthesis and difusion from atmosphere - this is why more turbulent waters have more oxygen. Stratiied lakes - lower oxygen on bottom because decomposition uses up some oxygen. Another way we look at do is biological oxygen demand (bod) If there is a lot of organic material, there is a lot of oxygen demand.
