| 壳聚糖改性粘土对水华优势藻铜绿微囊藻的絮凝去除 |
| 摘要点击 4435 全文点击 4075 投稿时间：2003-11-28 修订日期：2004-01-04 |
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| 中文关键词 水华 铜绿微囊藻 壳聚糖 粘土 絮凝 |
| 英文关键词 algae bloom Microcystis aeruginosa chitosan clays flocculation |
| DOI 10.13227/j.hjkx.20040608 |
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| 中文摘要 |
| 研究了壳聚糖改性对粘土絮凝去除铜绿微囊藻的影响.经壳聚糖包覆改性后的海泡石在投加总量仅为11 mg/L时,0.5h即可去除80%的藻细胞,2h去除率达到90%.不同粘土改性后絮凝除藻能力均有大幅度提高,原来除藻能力相去甚远的不同粘土,包括一般的黄土,改性后除藻能力被提升到相近的水平,投加量11 mg/L,可去除铜绿微囊藻90%以上.改性粘土和一般絮凝剂一样有一最佳投加量(本研究为11 mg/L),低于或超过此最佳值,絮凝除藻效果均下降. |
| 英文摘要 |
| The kinetics of flocculation and removal of Microcystis aeruginosa by chitosan-modified clays was studied. The efficiency of flocculating and removing of algal cells was greatly improved after the modification of the clays. About 80% of algae cell was removed in 0.5 hour, and 90% in 2 hours, when 11 mg/L modified sepiolite was added. Algae-removal capacities of different clays were all improved to a similar level of >90% at a total loading of 11 mg/L after being modified with chitosan. The efficiency of algae-removing was reduced when the clay loading was larger or smaller than the optimum loading. |
