Isolation and Identification of a Carbon-Fixing Bacteria Strain and Its Efficiency for Nitrogen and Phosphorus Removal from Viaduct Rainwater

In order to explore bacteria resources that are applicable for purification of viaduct rainwater, a carbon-fixing strain numbered 1C-1 was isolated from the sediment rainwater tank. The identified through morphological characteristics and 16S rDNA sequences. effects three main factors (the simulated concentration, carbon source dosage, inoculation amount) on nitrogen phosphorus removal rate were tested using rainwater. Based this, efficiencies actual verified. results showed belonged Streptomyces sp. Under different concentrations, exhibited relatively high efficiency at original concentration rainwater; other conditions remaining unchanged, when glucose dosage 800 mg, rates ammonia (NH4+-N), total (TN), (TP) 71.48%, 47.86%, 10.43%, respectively; amount 1%, NH4+-N, TN, TP reached 58.62%, 58.35%, 27.32%, respectively. above optimal process an removed 92.62%, 6.98%, 6.16% TP, respectively more interestingly, NH4+-N TN 43.26% 78.02%, respectively, even without addition. It seems there is no need addition remove strain. To sum up, presents obvious effect (especially nitrogen) treatment has application potential.