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

来源 :中国海洋大学学报(自然科学版) | 被引量 : 0次 | 上传用户:henban
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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10mg·L-1的Cu2+后,在SBR运行的第16~55天,COD和NH+-N的去除率保持稳定;在第56~75天,COD和NH+ 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10mg·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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