22 Determinants of Water Quality 6

22 Determinants of Water Quality 6 - materials(food sources...

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Becoming Anaerobic
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The oxygen status of water determines and is determined by the type of organisms aerobic or anaerobic High-oxygen Low-oxygen Oxygen status also impacts availability and toxicity of some pollutants
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Solubility: 0.043 g/L (20 o C) Oxygen is Water Soluble O 2 O 2
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Diffusion of O 2 through the water and from the atmosphere into water is generally slow Oxygen enters water from the atmosphere and from aquatic photosynthetic organisms Oxygen
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Diffusion of O 2 in water is generally slow Heterotrophic organisms together with inputs of organic
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Unformatted text preview: materials (food sources) control the oxygen status of waters. C H O + 6O → 6CO + 6H O Accelerated metabolic activity of aerobic heterotrophs due to an abundance of organic materials (food source) can significantly reduce the amount of dissolved oxygen Lower dissolved oxygen levels impact species diversity including a shift to a dominance of anaerobic microorganisms Reduced Oxygen Levels Oxygen is being used by aerobic heterotrophs at rate faster than it can be replaced Oxygen Slow diffusion...
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This note was uploaded on 02/24/2011 for the course SWS 2007 taught by Professor bonczek during the Fall '09 term at University of Florida.

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22 Determinants of Water Quality 6 - materials(food sources...

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