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膜生物反应器中运行参数对污泥胞外聚合物的影响

Keywords: MBR,曝气强度,有机负荷,SRT,EPS

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Abstract:

研究了膜生物反应器(MBR)中曝气强度、有机负荷和污泥停留时间(SRT)与污泥胞外聚合物(EPS)变化的关系。实验结果表明,随着气水比由20增加至40,污泥EPS逐渐下降。当气水比>35之后,EPS趋于稳定。随着有机负荷由0.129kgCOD/kgVSS?d减小至0.016kgCOD/kgVSS?d,附着型EPS减少,而溶解性EPS则呈现出增长趋势。当SRT从40d增加至180d时,附着型EPS浓度先是稍有减少,之后快速增加,溶解性EPS则增加。

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