| 酸度对好氧颗粒污泥生物吸附含铅废水影响的研究 |
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| 引用本文： | 王琳,李煜.酸度对好氧颗粒污泥生物吸附含铅废水影响的研究[J].环境工程学报,2009,3(7):1160-1164. |
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| 作者姓名： | 王琳 李煜 |
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| 作者单位： | 1. 中国海洋大学环境科学与工程学院海洋环境与生态教育部重点实验室,青岛,266100
2. 中国海洋大学环境科学与工程学院海洋环境与生态教育部重点实验室,青岛,266100;西澳大利亚大学水研究中心,澳大利亚,6009 |
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| 基金项目： | 国家自然科学基金资助项目（30570339）；教育部科学技术研究重点资助项目 (106105) |
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| 摘 要： | 为了有效地控制铅污染，利用序批式反应器（sequencing batch reactor,SBR）培养的以醋酸钠为碳源的好氧颗粒污泥作为吸附剂，进行生物吸附含铅废水的效能和机理的研究。通过考察酸度、接触时间和Pb2+初始浓度等因素的影响，验证好氧颗粒污泥吸附模型，并利用不同的脱附剂，进一步解析其生物吸附的Pb2+。实验结果表明, 酸度是影响好氧颗粒污泥生物吸附Pb2+的关键因素，当初始pH为5时，好氧颗粒污泥对含铅废水生物吸附效果最好。对低浓度（0～20 mg/L）含铅废水， 10 min后可快速达到吸附平衡。好氧颗粒污泥对Pb2+的实测饱和吸附量为101.97±9.00 mg/g，符合朗缪尔（Langmuir）模型。好氧颗粒污泥生物吸附Pb2+的过程，伴随着pH值的升高和K+、 Ca2+、 Mg2+的释放，此现象揭示离子交换作用是好氧颗粒污泥生物吸附Pb2+的机理之一。此外，脱附剂HNO3、EDTA和CaCl2能实现Pb2+的回收和好氧颗粒污泥的重复利用。
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| 关 键 词： | 好氧颗粒污泥 Pb2+ 离子交换 生物吸附 解析 |
Effect of acidity on biosorption of Pb2+ wastewater by aerobic granular sludge |
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| Wang Lin and Li Yu.Effect of acidity on biosorption of Pb2+ wastewater by aerobic granular sludge[J].Techniques and Equipment for Environmental Pollution Control,2009,3(7):1160-1164. |
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| Authors: | Wang Lin and Li Yu |
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| Institution: | 1.Key Laboratory of Marine Environment & Ecology, Ministry of Education,College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China and 1.Key Laboratory of Marine Environment & Ecology, Ministry of Education,College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China;2.Centre for Water Research, The University of Western Australia, Crawley, WA 6009, Australia |
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| Abstract: | In order to control the pollution of lead,aerobic granular sludge cultivated in sequencing batch reactor(SBR)was used for the treatment of wastewater containing Pb2+.The influences of acidity,contact time and initial Pb2+ concentration were investigated in batch experiments,and the biosorption model and mechanism were also analyzed.The results of the experiments show that acidity is an important factor in Pb2+ biosorption by aerobic granular sludge.When the initial pH is 5,aerobic granular sludge has the be... |
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| Keywords: | aerobic granular sludge Pb2+ ion exchange biosorption desorption |
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