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首页> 外文期刊>Separation and Purification Technology >Harvesting colonial Microcystis flos-aquae using two-stage filtration: Influence of pre-filtration on harvesting performance
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Harvesting colonial Microcystis flos-aquae using two-stage filtration: Influence of pre-filtration on harvesting performance

机译：采用两阶段过滤收获殖民微阴压薄膜 - 水质：预过滤对收获性能的影响

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摘要

The harvesting of bloom-forming colonial Microcystis flos-aquae using filtration helps with bloom control, the acquisition of a biomass resource and nutrient removal from eutrophic lakes. In this study, two-stage filtration of three combinations for M. flos-aquae harvesting was investigated, and the main factors affecting two-stage filtration performance were analysed. The results showed that compared with filtration with a 5 mu m membrane alone, pre-filtration with a 20 mu m screen improved biomass harvesting rate by 25.03% while 200 mu m and 550 mu m screens pre-filtrations resulted in decreases of 26.90% and 42.20%, respectively. The influences of colony size distribution and cellular concentration on filtration performance were predicted well using a multiple linear regression model (MLR). According to the model analysis, filtrate with larger colony size and narrower size distribution resulted higher harvesting performance. As the cellular concentration increased, the averaged flux decreased, while biomass harvesting rate increased initially, reached the highest value and then decreased. These results could be applied for the development of efficient filtration harvesting strategies for Microcystis bloom control.
机译：使用过滤的盛开形成殖民微囊症的收获有助于绽放控制，从富营养湖中获取生物质资源和营养去除。在这项研究中，研究了三种组合的两阶段过滤进行了薄片 - Aquae收获，分析了影响两阶段过滤性能的主要因素。结果表明，与单独的5μm膜的过滤相比，用20μmM筛网改善生物质收获率的预过滤，而200μm和550μm筛网预过滤导致26.90％降低42.20％。使用多元线性回归模型（MLR）预测菌落尺寸分布和细胞浓度对过滤性能的影响。根据模型分析，具有较大落区尺寸和较窄尺寸分布的滤液导致更高的收获性能。随着细胞浓度增加，平均磁通量降低，而生物质收获速率最初增加，达到最高值，然后减少。这些结果可用于开发用于微囊杆菌绽放控制的有效过滤收获策略。

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