Performance of denitrifying phosphorus removal of Acinetobacteria strain at low temperature

In order to investigate the possibility of Acinetobacteria strain to realize denitrifying phosphorus removal, batch tests were carried out to study the phosphorus uptake activity under different nitrate and nitrite concentrations. Results showed that the phosphorus uptake ability of Acinetobacteria strain was' enhanced with the increase of nitrate concentration, in the range of 0-100 mg/L Similar trend was detected with nitrite as elector acceptor in the range of 0-20 mg/L, and 40 mg/L of nitrite could inhibit the phosphorus uptake of Acinetobacteria strain. Denitrifying phosphorus removal process at low temperature (15 degrees C) showed that phosphorus uptake amount was over 30 mg/L with Acinetobacteria strain addition under anaerobic/anoxic condition by using 25 mg/L of nitrate as elector acceptor. (C) 2014 Elsevier Ltd. All rights reserved.