一株嗜盐聚磷菌的筛选及除磷性能初探

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16SrDNA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48h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...

Preliminary study on screening and phosphorus removal characteristics of a halophilic phosphate accumulating bacterial strain

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.