Effects of Cd2+ and Pb2+ on the substrate biofilms in the integrated
vertical-flow constructed wetland |
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| Authors: | ZHANG Jinlian CHENG Shuiping HE Feng LIANG Wei and WU Zhenbin |
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| Institution: | 1. State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China
2. State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China |
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| Abstract: | The effects of single Cd~(2 )and Pb~(2 ),and combined Cd~(2 )and Pb~(2 )on dehydrogenase activity and polysaccharide content of the substrate biofilms in the integrated vertical-flow constructed wetland(IVCW)were studied.Dehydrogenase activities decreased linearly with the increasing concentrations of Cd~(2 )and Pb~(2 )at different times(6,24,72,and 120 h).The activities at both 6 and 24 h were significantly higher than that at 72 and 120 h in the case of single and combined treatments.The single Cd~(2 )... |
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| Keywords: | Cd2 Pb2 biofilms dehydrogenase activity polysaccharide content integrated vertical-flow constructed wetland (IVCW) |
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