酵母菌-SBR法处理油脂碱炼废水研究  

Treatment of Oil-Manufacturing Wastewater by Yeast-SBR System

作　　者：吕文洲[1] 刘英[1] 黄亦真[1] 

机构地区：[1]宁波大学建筑工程与环境学院环境工程系,宁波315211

出　　处：《环境科学》2008年第4期966-971,共6页Environmental Science

基　　金：浙江省自然科学基金项目(Y507701);宁波市工业攻关项目(2006B100071);宁波市自然科学基金项目(2007A610057);宁波大学学校科研基金项目(XY0600058)

摘　　要：研究了8株酵母菌应用于序批式反应器（SBR）直接处理油脂碱炼废水的效果,并探讨了酵母菌的扩大培养方法和影响系统稳定运行的关键因素.结果表明,在不投加任何霉菌和细菌抑制剂的32 L开放体系中,6 d培养出MLSS 19 g/L、SVI 35 mL/g的酵母菌;30 d的连续运行结果表明,在COD 9 000-23 000 mg/L、油4 500-16 000 mg/L的进水情况下,系统高效、稳定运行,COD、油去除率分别达到了86.8%-96.9%和99.5%;短期的pH冲击对系统造成的不利影响是可逆的;污泥龄对酵母菌的SVI有一定影响;长期氮缺乏会诱发某些酵母菌细胞由单细胞向菌丝形态转化,并影响到酵母菌的沉降性.Eight yeast strains were applied to a sequencing batch reactor（SBR） to treat high-strength oil-containing wastewater.The removal performance,yeast cultivation method and key factors affecting the stability of system were discussed.The results show yeast sludge with MLSS of 19g/L and SVI of 35mL/g can be obtained in 6 d in an open system without any molds and bacteria inhibitor addition;In 30 d continuous wastewater treatment,COD and oil removal rate achieve 86.8%-96.9% and above 99.5% respectively under the influent conditions of the COD of 9000- 23000mg/L and oil of 4500-16000mg/L;Short period of pH impact brings reversible effects on the system and the sludge retention time can affect the SVI of the yeast;Absence of nitrogen induces morphology conversion of some yeast cells from single cell to filamentous one and impairs the settling capability of the yeast.

关 键 词：酵母菌 SBR 油脂废水 废水处理 稳定性 

分 类 号：X703.1[环境科学与工程—环境工程]