氮对酵母菌-SBR系统效能及酵母形态的影响研究  

Effects of Nitrogen on Performance and Yeast Morphology of Yeast-SBR System

作　　者：吕文洲[1] 刘英[1] 陈和平[1] 朱建林[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5期1348-1352,共5页Environmental Science

基　　金：浙江省自然科学基金项目(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项目(2007A610057);宁波大学博士基金项目

摘　　要：在酵母菌-SBR系统处理高含油废水中研究了氮添加对酵母细胞形态、沉降性、废水处理效果的影响及恢复能力.结果表明,氮添加量直接影响到系统中酵母菌的生物量、沉降性、pH和处理效果;氮缺乏诱发某些酵母菌菌株细胞由酵母形态向真菌丝形态转化,进而影响到酵母菌的沉降性;从系统运行效果和稳定性方面综合考虑,运行时最佳的进水BOD/N为20/1;恢复最佳氮添加能提高不同程度缺氮系统的处理效果,并可使轻度菌丝化系统快速恢复酵母形态为主,但在短期内对高度菌丝化系统的恢复效果不明显.Effects of nitrogen on yeast cell morphology, settleability and performance of wastewater treatment were investigated in treating oil- containing wastewater by yeast-SBR system. The results show that： nitrogen supply affects directly yeast biomass, settleabilty,pH and treatment efficiency of system ; the absence of nitrogen induces the transformation of certain yeast cells from single cell to hypha morphology. Based on an overall consideration of efficiency and stability of yeast-SBR system, the optimum BOD/N ratio of influent is 20/1. The optimum nitrogen supply can improve wastewater treatment efficiency of systems with different degrees of nitrogen absence and make yeast morphology become the predominant morphology for slightly mycelial system over a short time, but for severe mycelial system, the hypha morphology still keeps dominant.

关 键 词：酵母菌 SBR 氮 效能 细胞形态 

分 类 号：X703.1[环境科学与工程—环境工程]