• 关键词：生物除磷  嗜盐聚磷菌  高盐废水  生物学鉴定

• 基金项目：国家自然科学基金项目(No. 50678085, 50878107);青岛大学优秀研究生学位论文培育项目(No.YSPY2009014)

• 张培玉
• 青岛大学环境科学与工程系,青岛 266071

• 孙梦
• 青岛大学环境科学与工程系,青岛 266071

• 张晨
• 青岛大学环境科学与工程系,青岛 266071

• 摘要：从运行稳定的以生活污水为碳源的污泥中富集分离,并筛选出一株嗜盐聚磷菌qdp05,通过对菌株的形态、生理生化特征及16S rDNA序列进行分析后,鉴定该菌株qdp05为肠杆菌属.当碳源为乙酸钠,盐度为2%的条件下,好氧条件下培养48 h后,qdp05对磷的最终去除率为87.8%.在厌氧好氧连续培养过程,qdp05表现出明显的厌氧释磷好氧吸磷特点.该菌株对高盐度废水的除磷处理具有很高的应用价值.

• Abstract：A halophilic phosphate accumulating bacterial strain, designated as qdp05, was selected after the enrichment and separation of the biological sludge in a stably-operated system in which the carbon source was derived from the domestic sewage. The strain was identified as Enterobacter sp. by analyzing the morphological, physiological and biochemical features and 16S rDNA sequence. After 48-hour aerobic cultivation with sodium acetate being the carbon sources and 2% salinity, the phosphorus removal rate of strain qdp05 was 87.8%. During anaerobic/oxic successive cultivation, strain qdp05 showed obvious phosphorus release in the anaerobic stage and phosphorus uptake in the oxic stage. This bacterium can be very useful in removing phosphorus from hyperhaline wastewater.

• Key words：biological phosphorus removal  halophilic phosphate accumulating bacteria  high salinity wastewater  biological identification

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