酵母菌-SBR系统处理高含油废水中曝气时间优化  

Optimization of Aeration Time in Treating High-strength Oil-containing Wastewater by Yeast-SBR System

作　　者：刘英[1] 吕文洲[1] 黄亦真[1] 

机构地区：[1]宁波大学建筑工程与环境学院,浙江宁波315211

出　　处：《宁波大学学报（理工版）》2008年第3期413-417,共5页Journal of Ningbo University：Natural Science and Engineering Edition

基　　金：浙江省自然科学基金(Y507701);浙江省教育厅科研项目(20070970);宁波市工业攻关项目(2006B100071);宁波市自然科学基金(2007A610057);宁波大学科研基金(XY0600058)

摘　　要：在酵母菌-SBR系统处理高含油废水过程中,研究了不同曝气时间与污染物降解效果、溶液pH、Zeta电位、氮磷利用率以及酵母絮体粒径的关系,确定了系统运行的适宜曝气时间为8～12h;在此条件下100d的连续废水处理实验获得了高效、稳定的运行;通过对表观、实际油去除率以及反应过程中酵母絮体粒径的变化分析,表明了酵母菌降解高含油废水过程包括快速吸附、降解及稳定化3个阶段。Ten yeast strains are applied into a SBR system to treat high-strength oil-containing wastewater. The relationships are investigated between aeration time and removal rate of pollutants, solution pH, Zeta potential, utilization ratio of nitrogen and phosphorus, and diameter of yeast floc. The results show that the optimized aeration time for the system is in a range of 8-12 h, in which the more stable and efficient system operation is achieved. Based on the analytical results drawn from appearance, oil removal rate and change in diameter of yeast floc, it suggests that the rapid adsorption, degradation and stabilization are included in the degradation of oil-containing wastewater by yeasts.

关 键 词：酵母菌 含油废水处理 曝气时间 ZETA电位 粒径 

分 类 号：X703.1[环境科学与工程—环境工程]