| Cu2+对序批式反应器中活性污泥胞外聚合物产量及其组分的影响 |
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| 引用本文： | 李姗姗,朱四富,马丙瑞,于娜玲,赵长坤,信帅帅,潘云浩,吴淑妍,武原原,高孟春.Cu2+对序批式反应器中活性污泥胞外聚合物产量及其组分的影响[J].中国海洋大学学报(自然科学版),2020(2):107-115. |
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| 作者姓名： | 李姗姗 朱四富 马丙瑞 于娜玲 赵长坤 信帅帅 潘云浩 吴淑妍 武原原 高孟春 |
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| 作者单位： | 中国海洋大学海洋环境与生态教育部重点实验室;青岛市海泊河污水处理厂;中国海洋大学环境科学与工程学院 |
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| 基金项目： | 国家自然科学基金项目(51178437)资助~~ |
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| 摘 要： | 研究了长期暴露条件下Cu2+对序批式反应器(SBR)性能及其活性污泥胞外聚合物(EPS)特性的影响。结果表明,进水中加入10 mg·L-1的Cu2+后,在SBR运行的第16~55天,COD和NH+4-N的去除率保持稳定;在第56~75天,COD和NH+4-N的平均去除率与进水Cu2+浓度为0 mg·L-1时相比分别下降了3.88%和6.41%。浓度为10 mg·L-1的Cu2+长期作用下,活性污泥中EPS、松散附着EPS(LB-EPS)和紧密附着EPS(TB-EPS)产量及LB-EPS和TB-EPS中蛋白质(PN)含量增加。傅里叶变换红外光谱分析表明10 mg·L-1 Cu2+的长期暴露导致TB-EPS中PN的C=O键、N-H键和C-O键相对含量降低。X射线光电子能谱(XPS)测试结果显示在10 mg·L-1 Cu2+长期暴露条件下,LB-EPS和TB-EPS中元素Cu和O百分含量增加。
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| 关 键 词： | 序批式反应器 胞外聚合物 活性污泥 傅里叶变换红外光谱分析 长期暴露 EPS SBR |
Effects of Cu2+ on the Production and Composition of Extracellular Polymeric Substances in the Activated Sludge from a Sequencing Batch Reactor |
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| LI Shan-Shan,ZHU Si-Fu,MA Bing-Rui,YU Na-Ling,ZHAO Chang-Kun,XIN Shuai-Shuai,PAN Yun-Hao,WU Shu-Yan,WU Yuan-Yuan,GAO Meng-Chun.Effects of Cu2+ on the Production and Composition of Extracellular Polymeric Substances in the Activated Sludge from a Sequencing Batch Reactor[J].Periodical of Ocean University of China,2020(2):107-115. |
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| Authors: | LI Shan-Shan ZHU Si-Fu MA Bing-Rui YU Na-Ling ZHAO Chang-Kun XIN Shuai-Shuai PAN Yun-Hao WU Shu-Yan WU Yuan-Yuan GAO Meng-Chun |
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| Institution: | (The Key Laboratory of Marine Environmental Science and Ecology,Ministry of Education,Ocean University of China,Qingdao 266100,China;Haibohe Municipal Wastewater Treatment Plant,Qingdao 266021,China;College of Environmental Science and Engineering,Ocean University of China,Qingdao 266100,China) |
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| Abstract: | The long-term effect of Cu2+ on the performance of a sequencing batch reactor(SBR) and the properties of extracellular polymeric substances(EPS) from the activated sludge were evaluated. The COD and NH+4-N removal of SBR had no obvious change at 10 mg·L-1 Cu2+ during 16 th^55 th day, whereas the average removal efficiencies of COD and NH+4-N decreased by 4.19% and 6.13% during 56 th^75 th day compared to the control, respectively. The production of EPS, loosely-bound EPS(LB-EPS) and tightly bound EPS(TB-EPS) showed obvious increase under long-term Cu2+ stress. The contents of protein(PN) in the LB-EPS and TB-EPS increased after long-term exposure to Cu2+. Fourier-transform infrared spectra analysis indicated 10 mg·L-1 Cu2+ resulted in the decrease of the relative contents of C=O, N-H and C-O groups of PN in TB-EPS. X-ray photoelectron spectroscopy(XPS) spectra analysis showed relative contents of Cu and O increased in LB-EPS and TB-EPS under long-term exposure to 10 mg·L-1 Cu2+. |
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| Keywords: | Cu 2+ activated sludge extracellular polymeric substances protein polysaccharide |
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