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首页> 外文期刊>Aquacultural Engineering: An International Journal >Factors influencing optimal micro-screen drum filter selection for recirculating aquaculture systems.
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Factors influencing optimal micro-screen drum filter selection for recirculating aquaculture systems.

机译：影响循环水产养殖系统最佳微筛鼓式过滤器选择的因素。

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摘要

Recirculation aquaculture systems (RAS) are susceptible to contamination due to the accumulation of waste matter including faecal material in the water. It is imperative that contaminant levels are maintained within acceptable limits. The maintenance of good water quality is a pre-requisite to the success of the fish farming operation. Micro-screen drum filters are a popular solution for the removal of suspended solid material and are nominally rated by their screen aperture size measured in microns. Negligence in this area will adversely affect animal growth rates and thus the economic performance of the system. Many variables influence mechanical filter performance, this presents a common issue during equipment selection. For simplicity, vendors have simplified selection criteria for filters to the flow capacity at vendor specified TSS levels, without reference to a specific culture species. This paper outlines a method for micro-screen drum filter selection for site and species specific applications using simple equipment, aiding in the identification of an optimal filtration solution, in terms of cost and filtration performance. Furthermore, the potential of cake filtration for increased filtration mechanical efficiency is also evaluated; this evaluation considers the impact of cake filtration on filter flow rate and mechanical filtration efficiency, for an analysis that is more representative of real world operating conditions. It has been found that the formation of a cake does not significantly increase the mechanical filtration efficiency achieved.
机译：由于包括粪便在内的废物物质在水中的积累，循环水产养殖系统（RAS）容易受到污染。必须将污染物水平保持在可接受的范围内。维持良好的水质是养鱼业成功的前提。微型筛网鼓式过滤器是去除悬浮固体物质的流行解决方案，并通过以微米为单位的筛网孔径大小进行标称评定。在这一领域的疏忽将不利地影响动物的生长速度，从而影响系统的经济性能。许多变量会影响机械过滤器的性能，这在设备选择过程中会出现一个常见问题。为简单起见，供应商简化了针对供应商指定的TSS级别流量的过滤器的选择标准，而无需参考特定的培养物种。本文概述了一种使用简单设备针对场所和物种特定应用选择微筛网鼓式过滤器的方法，从成本和过滤性能方面帮助确定最佳的过滤解决方案。此外，还评估了滤饼过滤对提高过滤机械效率的潜力;该评估考虑了滤饼过滤对过滤器流速和机械过滤效率的影响，以便进行更能代表实际操作条件的分析。已经发现，滤饼的形成不会显着提高所获得的机械过滤效率。

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