| 水生植物床去除富营养化水源水中藻毒素的机制 |
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| 引用本文： | 宋海亮.水生植物床去除富营养化水源水中藻毒素的机制[J].东南大学学报,2006,22(4):528-533. |
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| 作者姓名： | 宋海亮 |
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| 作者单位： | 东南大学能源与环境学院 南京210096 |
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| 基金项目： | The National Natural Science Foundation of China （No. 50378014）, the National High Technology Research and Development Program of China （863 Program） （ No. 2002AA601011 ）. |
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| 摘 要： | 为净化富营养化水源水中的藻毒素,在太湖湖滨进行了水生植物床(AVB)技术试验.该技术对MC-RR和MC-LR的平均去除率分别达63.0%和66.7%.用酶联免疫吸附法检测发现水生植物根部对藻毒素的富集能力大于茎叶部位.用荧光原位杂交法在AVB的底泥中检测到2种已知的藻毒素降解细菌,证明微生物降解作用的存在.植物根系原生动物相和后生动物相丰富,盾纤虫、钟虫、旋轮虫、腔轮虫是优势种,原生动物和后生动物的捕食作用在蓝藻和藻毒素的去除中发挥着积极作用.
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| 关 键 词： | 藻毒素 水生植物床 生物降解 原生动物 后生动物 植物蓄积 |
| 收稿时间： | 04 3 2006 12:00AM |
Mechanism of microcystin removal from eutrophicated source water by aquatic vegetable bed |
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| Song Hailiang.Mechanism of microcystin removal from eutrophicated source water by aquatic vegetable bed[J].Journal of Southeast University(English Edition),2006,22(4):528-533. |
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| Authors: | Song Hailiang |
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| Institution: | School of Energy and Environment, Southeast University, Nanjing 210096, China |
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| Abstract: | For purifying raw water for tap water treatment,the aquatic vegetable bed (AVB) experiment has been carried out in a hypertrophic waterfront of Taihu Lake,China.The average removal rates of total microcystin-RR and microcystin-LR are 63.0% and 66.7%,respectively.Experiments indicate that Ipomoea aquatica can absorb microcystin by using enzyme-linked immunosorbent assay (ELISA),and the roots absorb more toxins than leaves and stems.Fluorescence in situ hybridization (FISH) is used to analyze the density of microcystin degrading bacteria in the AVB sediment.Two species of microcystin degrading bacteria are detected,which indicate that microcystin bio-degradation process happened in the AVB.Protozoa and metazoa are abundant in root spheres.Aspidisca sp.,Vorticella sp.,Philodina sp.,and Lecane sp.are dominant species.The predation functions of protozoa and metazoa have a positive effect on the removal of cyanobacteria and microcystin. |
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| Keywords: | microcystin aquatic vegetable bed biodegradation protozoa metazoa accumulation of plant |
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