胞外聚合物EPS组成及对污泥特性的影响研究

Composing of Extracellular Polymeric Substances and Its Effect on Sludge Characteristics

综述了进水基质、溶解氧(DO)、pH、污泥停留时间(SRT)和污泥负荷(Ns)对EPS组成的影响,分析了EPS对污泥的表面特性(污泥混合液疏水性、Zeta电位等)、生物絮凝沉降性、脱水性及吸附再生性能的影响,并通过控制适当的条件,改善EPS组成,形成良好的活性污泥,能使之更好的发挥作用。

This paper summarized the effect of influent category,dissolved oxygen（DO）, p H, solids-retention time（SRT） and loading rate（Ns） on the composing of EPS, and analysed the effect of EPS on surface characteristics （hydrophobicity and Zeta potential）, flocculating and settling, dewatering, adsorption and regeneration of activated sludge. Controlling the appropriate condition to alter the composing of EPS can form the favorable activated sludge and make it produce a marked effect.