Abstract
This study examined the use of an Oxygen Release Compound (ORC®) as a slow release chemical aeration agent within eutrophic surface water systems. Bench and pilot-scale experiments involving ORC® treatment of eutrophic reservoir water were conducted to determine operational properties of ORC® and examine its performance as an aeration agent within a surface water environment. The bench-scale study involved the application of 10, 25 and 50 g ORC® doses to 1 L Erlenmeyer flasks containing various water and sediment samples. The pilot-scale study involved a scaled up simulation of full-scale reservoir systems using large fiberglass tanks, where water quality parameters in an ORC®-treated tank were compared to an untreated tank over a 4 month period. The results of these experiments indicate that the application of ORC® can result in substantial increases in dissolved oxygen and pH when applied to deoxygenated water systems. Within the pilot scale study, a 300 g/m2 dose of ORC® at the sediment water interface prevented the onset of anoxic conditions over a 4 month growing season period, releasing approximately 20% of its mass as oxygen within this time frame.
Published Version
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