TY - JOUR
T1 - A sludge characterization assay for aerobic and denitrifying phosphorus removing sludge
AU - Wachtmeister, A.
AU - Kuba, T.
AU - Van Loosdrecht, M. C.M.
AU - Heijnen, J. J.
N1 - Funding Information:
Acknowledgements--This research was financially supported, in part, by the Netherlands Agency for the Environmental and Energy (NOVEM, 351230/1110), and the Foundation for Water Research (STOWA) and Institute for Inland Water Management and Waste Water Treatment (RIZA) within the framework of the programme Future Treatment Techniques for Municipal Waste Water (RWZI 2000-3234/5). Thanks are due to F. A. Brandse (Zuiver-ingschap West-Overijssel)for providing the activated sludge from the waste water treatment plant. Sincere thanks go to S. van Hateren, C. Ras, D. C. Reuvers, G. van der Steen and M. Zomerdijk for analyses of the samples, and to P. Kroon and S. Lispet for technical assistance in the experimental set-up. A. Wachtmeister (Department of Biochemistry and Biotechnology, Royal Institute of Technology, Stockholm) was able to participate in the research due to a grant from the EC-ERASMUS program.
PY - 1997/3
Y1 - 1997/3
N2 - It was recently recognized that denitrifying bacteria, as well as aerobic bacteria, contribute to the biological phosphorus removal process. For evaluation of the phosphorus removal process it is necessary to have tests enabling a proper characterization of the microbial population in the activated sludge. In this study we evaluated the possibility of anoxic phosphorus release or aerobic/anoxic phosphorus uptake tests for sludge characterization. Hereto we employed sludge mixtures of enrichment cultures from laboratory sequencing batch reactor (SBR) systems operated under aanaerobic-aerobic (A/O) or anaerobic-anoxic (A2) conditions. It is shown that interpretation of phosphorus release tests, with or without nitrate present, is difficult. On the other hand a comparison of phosphorus uptake under aerobic and anoxic conditions leads to a straightforward characterization of the microbial population in the phosphorus removing organisms, with respect to their phosphorus removal activity under aerobic and anoxic conditions.
AB - It was recently recognized that denitrifying bacteria, as well as aerobic bacteria, contribute to the biological phosphorus removal process. For evaluation of the phosphorus removal process it is necessary to have tests enabling a proper characterization of the microbial population in the activated sludge. In this study we evaluated the possibility of anoxic phosphorus release or aerobic/anoxic phosphorus uptake tests for sludge characterization. Hereto we employed sludge mixtures of enrichment cultures from laboratory sequencing batch reactor (SBR) systems operated under aanaerobic-aerobic (A/O) or anaerobic-anoxic (A2) conditions. It is shown that interpretation of phosphorus release tests, with or without nitrate present, is difficult. On the other hand a comparison of phosphorus uptake under aerobic and anoxic conditions leads to a straightforward characterization of the microbial population in the phosphorus removing organisms, with respect to their phosphorus removal activity under aerobic and anoxic conditions.
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U2 - 10.1016/S0043-1354(96)00281-3
DO - 10.1016/S0043-1354(96)00281-3
M3 - Article
AN - SCOPUS:0031081991
SN - 0043-1354
VL - 31
SP - 471
EP - 478
JO - Water Research
JF - Water Research
IS - 3
ER -