Abstract Mobley M, Gantzer P, Benskin P, Hannoun I, McMahon S, Austin D, Scharf R. 2019. Hypolimnetic oxygenation of water supply reservoirs using bubble plume diffusers. Lake Reserv Manage. 35:247–265. Hypolimnetic oxygenation of water supply reservoirs improves water quality by preventing anoxia. This article summarizes the operational results using linear bubble plume diffuser hypolimnetic oxygenation systems installed in water supply reservoirs. The results obtained for 8 sites demonstrate that diffuser technology was effective at increasing hypolimnetic dissolved oxygen (DO) and spreading it to blanket sediments. The diffuser systems maintained increased DO in the hypolimnion during successive years of operation at every site. Improved oxygen levels reduced anoxic products and nutrients to mitigate the causes of taste and odor in the water supplied to water treatment facilities. This yielded additional treatment capacity, reduced treatment costs, and provided alternatives to water treatment plant modifications. The diffuser systems provide a simple and effective hypolimnetic oxygenation system, with 19 in operation. The hypolimnetic oxygenation systems (HOS) functions without a water pump and can obtain favorable oxygen transfer efficiencies. The diffusers are installed and maintained from the surface without divers. Diffusers provide an economical means to distribute oxygen input over large areas of the reservoir hypolimnion. Diffuser system installation costs run between $0.5M and $2.5M ($40 to $800 per hectare meter), with annual operating costs between $30K and $140K ($5 to $36 per hectare meter). Capital and operational costs vary depending on site specific conditions. With diffuser oxygenation, customer complaints were reduced and, in some cases, substantial monetary savings were realized by reduced treatment costs. Our results demonstrate that diffusers are a cost-effective treatment option for water supply reservoirs in which anoxia induces water quality problems.

中文翻译：

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使用气泡羽流扩散器对供水水库进行低浓度氧化

摘要 Mobley M、Gantzer P、Benskin P、Hannoun I、McMahon S、Austin D、Scharf R. 2019。使用气泡羽流扩散器对供水水库进行低浓度氧合。湖泊保护区管理。35:247-265。供水水库的低浓度氧合通过防止缺氧来改善水质。本文总结了使用安装在供水水库中的线性气泡羽流扩散器低温氧合系统的运行结果。从 8 个地点获得的结果表明，扩散器技术可有效增加水下溶解氧 (DO) 并将其扩散到覆盖层沉积物中。在每个站点连续运行的几年中，扩散器系统在水下层保持增加的溶解氧。氧气水平的提高减少了缺氧产品和营养物质，以减轻供应给水处理设施的水中的味道和气味的原因。这产生了额外的处理能力，降低了处理成本，并提供了水处理厂改造的替代方案。扩压器系统提供了一个简单而有效的低湖水氧合系统，有 19 个在运行。水下氧合系统 (HOS) 在没有水泵的情况下运行，可以获得良好的氧气传输效率。扩散器从水面安装和维护，无需潜水员。扩散器提供了一种经济的方法来将氧气输入分配到储层下层的大面积区域。扩散器系统安装成本在 50 万美元到 250 万美元之间（每公顷米 40 到 800 美元），年运营成本在 3 万美元到 14 万美元之间（每公顷 5 到 36 美元）。资本和运营成本因现场特定条件而异。使用扩散器充氧，减少了客户的投诉，在某些情况下，通过降低处理成本实现了大量的资金节省。我们的结果表明，对于缺氧会导致水质问题的供水水库，扩散器是一种具有成本效益的处理选择。