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Determination of the Most Influential Parameters for Efficient Design and Operation of High-Rate Direct Filters 高效设计和运行高速直接滤波器最有影响参数的确定
发布日期: 2001-01-01
这项研究是题为“高速过滤设计标准”的研究项目的一部分。本文讨论的结果旨在确定在直接过滤应用中具有最重要影响的参数。评估了过滤器设计和运行中涉及的七个参数的贡献。主要结果表明,过滤速率、介质有效尺寸、介质深度和水头是影响过滤器性能的主要参数。每个参数的贡献取决于需要改进的性能角度。介质类型和均匀系数的贡献较小。对于低浊度水(< 5 NTU),原水浊度对过滤效率没有显著影响。 过滤速率的增加有助于提高过滤器的生产率(每天的有效水量),但同时也会增加出水的浊度和颗粒突破。如果对质量非常好的原水(低浊度)采用高过滤率,则成品水的质量不应受到影响。主要参数的优化正在进行中。然后使用天然水进行验证。包括14个参考文献、表格和图表。
This study is part of a Research project entitled: "Design Criteria for High Rate Filtration". The results discussed in this paper are aimed at identifying the parameters with the most important effects in direct filtration applications. The contribution of seven parameters involved in filter design and operation were assessed. The main results showed that the filtration rate, the media effective size, the media depth and the water head are the parameters that most impact filter performance. The contribution of each parameter depends on the performance angle to be improved. The contribution of the type of media and the uniformity coefficient is minor. For low turbidity waters (< 5 NTU), the raw water turbidity does not have a significant impact on filter efficiency. An increase in filtration rate helps increase filter productivity (effective volume of water per day), but at the same time it increases turbidity and particle breakthrough at the effluent. If high filtration rates are applied to very good quality raw water (low turbidity), then the quality of the finished water should not be compromised. Optimization of the main parameters is on the way. Validation will then occur using natural waters. Includes 14 references, tables, figures.
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发布单位或类别: 美国-美国给水工程协会
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