Preliminary study on screening and phosphorus removal characteristics of a halophilic phosphate accumulating bacterial strain
一株嗜盐聚磷菌的筛选及除磷性能初探

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.