Hynes Lee, Jamieson Rob, Gagnon Graham, Brooks Marianne S
Department of Process Engineering & Applied Science, Dalhousie University, Halifax, Nova Scotia, Canada.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2009 Jul 15;44(9):906-13. doi: 10.1080/10934520902958757.
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.
本研究考察了在富营养化地表水系统中使用氧释放化合物（ORC）作为缓释化学曝气剂的情况。进行了涉及用ORC处理富营养化水库水的实验室规模和中试规模实验，以确定ORC的运行特性，并检验其在地表水环境中作为曝气剂的性能。实验室规模研究包括向装有各种水样和沉积物样品的1升锥形瓶中分别投加10克、25克和50克的ORC剂量。中试规模研究包括使用大型玻璃纤维水箱对全尺寸水库系统进行放大模拟，在4个月的时间里，将经ORC处理水箱中的水质参数与未处理水箱中的水质参数进行比较。这些实验结果表明，将ORC应用于脱氧水系统时，可使溶解氧和pH值大幅增加。在中试规模研究中，在沉积物-水界面投加300克/平方米剂量的ORC，在4个月的生长季节内防止了缺氧状况的出现，在此时间段内，其约20%的质量以氧气形式释放。
