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巢湖蓝藻的机械清除工艺以及藻水分离实验研究

Keywords: 巢湖,蓝藻,机械清除,离心脱水

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Abstract:

对巢湖蓝藻进行机械清除以及藻水分离实验研究,实验采用的浮式围栏引导-机械清除-投加剥离液辅助机械清除工艺处理量大,除藻效率高,筛网过滤-浓缩-卧螺离心机脱水成藻泥的藻水分离工艺较为理想,藻泥含水率仅为89%。2011年5—10月在巢湖运用上述方法清除湖面水华蓝藻,共处理富藻水1.6万m3,得到藻泥970t,累计清除蓝藻106.7t(干重)。按照所清除蓝藻的总氮、总磷的平均含量计算,相当于从湖中移除了氮6.25t,磷2.1t。表明在富营养湖泊中水华蓝藻大量暴发时,采用上述方法除藻,对控制蓝藻水华污染,有效降低内源氮、磷等污染物负荷具有十分重要的作用。

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