| 壳聚糖改性粘土对水华优势藻铜绿微囊藻的絮凝去除 |
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| 引用本文： | 邹华,潘纲,陈灏.壳聚糖改性粘土对水华优势藻铜绿微囊藻的絮凝去除[J].环境科学,2004,25(6):40-43. |
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| 作者姓名： | 邹华 潘纲 陈灏 |
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| 作者单位： | 中国科学院生态环境研究中心环境水质学国家重点实验室,北京,100085;中国科学院生态环境研究中心环境水质学国家重点实验室,北京,100085;中国科学院生态环境研究中心环境水质学国家重点实验室,北京,100085 |
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| 基金项目： | 国家"十五"重大科技专项(2002AA60101);国家自然科学基金资助项目(20177029) |
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| 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.
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| 关 键 词： | 水华 铜绿微囊藻 壳聚糖 粘土 絮凝 |
| 文章编号： | 0250-3301(2004)06-0040-04 |
| 收稿时间： | 2003/11/28 0:00:00 |
| 修稿时间： | 1/4/2004 12:00:00 AM |
Flocculation and Removal of Water Bloom Cells Microcystis aeruginosa by Chitosan-Modified Clays |
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| ZOU Hu,PAN Gang and CHEN Hao.Flocculation and Removal of Water Bloom Cells Microcystis aeruginosa by Chitosan-Modified Clays[J].Chinese Journal of Environmental Science,2004,25(6):40-43. |
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| Authors: | ZOU Hu PAN Gang and CHEN Hao |
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| Institution: | State Key Lab. of Environmental Aquatic Chemistry, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. |
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| Abstract: | 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. |
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| Keywords: | algae bloom Microcystis aeruginosa chitosan clays flocculation |
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