低碳源浓度条件下聚磷菌特性林海.pdf

3 6 Vol. 3 No. 6 2009 6 Journal of University of Science and Technology Beijing Jun. 2009 林 海 李 萍 陈月芳 王 倩 侯瑞荣 张 艳 , 100083 , . ( acinetobacter sp. ) . AE ; , COD 100mgL - 1: A E pH 8 7 , 20 25 ; . . ( PAO ) ; ; ; X 7031 Characteristics of phosphorus accumulating organisms at low carbon level LIN H ai, LI Ping, CHEN Yue-f ang, WANG Qian, HOU Rui-rong, ZHANG Yan S choo of Civi and Environmenta Engineering , U niversit y of Science and T echno ogy Beijing, Beijing 100083, China ABSTRACT T w o eff icient po yphosphate accumu ating organism s, A and E , w ere screened from the returned s udge w hich comes from the f ina sedimentation tank in Beijing Gaobeidian Sew age T reatment P ant . At the same time, the reversing di ution p ate sepa- ration t echno og y w as identif ied to be benef icia to screening the po yphosphate accumu ating organism s. Observations of their morpho- og ica , physio ogica and biochemica f eatures indicate that they are acinetobacter sp . By exper iment , the optima choices for car bon of the po yphosphate accumu ating organism s A and E are CH COON a and C H NN aO , respective y. Exper imenta data show the 3 5 8 4 best g rowth condit ions of po yphosphate accumu ating org anisms in reducing carbon concentrations, i . e. ess than COD 100 mg L - 1: t he optima pH v a ues and temperatures of the po yphosphate accumu ating org anism s A and E are 8 and 7 , 20 and 25 , respec- tiv e y. M eta ions M g2+ , K + and M n2+ can be he pfu to accumu ate po yphosphate. T he eff ect o f ox ygen on the phosphate accumu- ating microorganism s w as discu