[Denitrifying bacteria isolated from river sediment and its nitrogen and phosphorus removal capacity from river water].
20 strains of bacteria were isolated from river sediment using enrichment culture medium for denitrification, and the denitrification intensity was determined. F10, one of bacteria strain, was identified having the highest denitrifying intensity, and further used to test its role in the removing of nitrogen and phosphorus from wastewater in laboratory. By checking the individual morphology, colony culture characteristics, DNA sequencing and 16S rDNA gene bank, F10 was identified as Alcaligenes faecalis, and its denitrifying intensity was 63.2%. The highest removal of TN (76.2%) and TP (93.8%) were observed in a 10 days period with an addition of F10 at a rate of 100 mg/L.
Environmental and Healthy Engineering Research Center, Henan University, Kaifeng 475001, China. wlenglish@163.com
Lin
L
Wang
Ji
J
Li
Wen-li
WL
Kang
Yun-zeng
YZ
Chen
Ting-zhong
TZ
Guo
D042481:Alcaligenes faecalis / Q000302:isolation & purification* / Q000378:metabolism; D001673:Biodegradation, Environmental; D019015:Geologic Sediments / Q000382:microbiology*; D009584:Nitrogen / Q000378:metabolism*; D010758:Phosphorus / Q000378:metabolism*; D045483:Rivers; D014874:Water Pollutants, Chemical / Q000378:metabolism*; D018508:Water Purification / Q000379:methods
D014874:Water Pollutants, Chemical; D010758:Phosphorus; D009584:Nitrogen