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| 鄱阳湖水体颗粒物对3种典型藻类的生长及絮凝作用 | |
| 引用本文： | 曹晶,刘建辉,储昭升,王毅力.鄱阳湖水体颗粒物对3种典型藻类的生长及絮凝作用[J].环境科学学报,2015,35(5):1318-1324. |
| 作者姓名： | 曹晶 刘建辉 储昭升 王毅力 |
| 作者单位： | 1. 中国环境科学研究院湖泊生态环境创新基地/国家环境保护湖泊污染控制重点实验室,环境基准与风险评估国家重点实验室,北京100012;天津科技大学生物工程学院,天津300457 2. 中国环境科学研究院湖泊生态环境创新基地/国家环境保护湖泊污染控制重点实验室,环境基准与风险评估国家重点实验室,北京100012 3. 北京林业大学环境科学与工程学院,北京,100083 |
| 基金项目： | 国家重点基础研究发展计划项目(No.2012CB417004);国家自然科学基金(No.51078341,50938007) |
| 摘 要： | 研究了鄱阳湖水体颗粒物对3种典型藻类的生长及絮凝作用.以铜绿微囊藻(蓝藻)、四尾栅藻(绿藻)和菱形藻(硅藻)为研究对象,鄱阳湖采集沉积物为悬浮颗粒物,利用500 m L玻璃锥形瓶作为小型、光照均一体系,于此体系中研究了颗粒物对藻类生长的影响,使用混凝试验搅拌仪分别研究了颗粒物粒径、浓度和体系p H对颗粒物絮凝沉降藻细胞的影响.在小型光照均一体系中,20 mg·L-1(鄱阳湖悬浮颗粒物低浓度)和80 mg·L-1(鄱阳湖悬浮颗粒物高浓度)颗粒物对3种藻类的生长影响均较小.在颗粒物投加量为0.02 g·L-1时,60~300目颗粒物均促进藻类的絮凝沉降,并且随着颗粒物粒径(D50)的增大,藻细胞的絮凝沉降效率逐渐减小,而且粒径在1~25μm部分的颗粒在此过程中占主导地位.当颗粒物投加量由0.02 g·L-1升至1.28 g·L-1时,3种藻的絮凝沉降效率随之提高.在颗粒物投加量为0.02 g·L-1时,铜绿微囊藻、四尾栅藻和菱形藻的絮凝沉降效率仅为11.08%、15.87%和7.50%,当颗粒物浓度升至1.28 g·L-1时,3种藻的絮凝沉降效率分别达42.33%、41.72%、28.98%.在p H值6~10范围内,随着p H升高,颗粒物对蓝藻、绿藻的絮凝沉降作用逐渐减小,絮凝沉降效率分别从p H为6时的36.10%、35.07%降到p H为10时的16.25%、12.59%;而对硅藻的絮凝沉降作用不明显.由此可见,鄱阳湖水体颗粒物影响藻类的絮凝沉降过程,使藻类的群落结构发生变化. |
| 关 键 词： | 水体颗粒物 藻类 粒径 浓度 pH 絮凝沉降效率 |
| 收稿时间： | 2014/6/13 0:00:00 |
| 修稿时间： | 2014/12/5 0:00:00 |
The effect of suspended particulates in Poyang Lake on the growth and flocculation of three kinds of algae |
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| CAO Jing,LIU Jianhui,CHU Zhaosheng and WANG Yili.The effect of suspended particulates in Poyang Lake on the growth and flocculation of three kinds of algae[J].Acta Scientiae Circumstantiae,2015,35(5):1318-1324. | |
| Authors: | CAO Jing LIU Jianhui CHU Zhaosheng and WANG Yili |
| Institution: | 1. Research Center of Lake Eco-Environment, Chinese Research Academy of Environmental Sciences/State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory for Lake Pollution Control, Beijing 100012;2. College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457;Research Center of Lake Eco-Environment, Chinese Research Academy of Environmental Sciences/State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory for Lake Pollution Control, Beijing 100012;Research Center of Lake Eco-Environment, Chinese Research Academy of Environmental Sciences/State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory for Lake Pollution Control, Beijing 100012;College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083 |
| Abstract: | |
| Keywords: | suspended particles in waterbody algae particle size concentration pH flocculation-sedimentation efficiency |
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