Journal article

Identification of some of the major groups of bacteria in efficient and nonefficient biological phosphorus removal activated sludge systems

PL Bond, R Erhart, M Wagner, J Keller, LL Blackall

APPLIED AND ENVIRONMENTAL MICROBIOLOGY | AMER SOC MICROBIOLOGY | Published : 1999

Abstract

To investigate the bacteria that are important to phosphorus (P) removal in activated sludge, microbial populations were analyzed during the operation of a laboratory-scale reactor with various P removal performances. The bacterial population structure, analyzed by fluorescence in situ hybridization (FISH) with oligonucleotides probes complementary to regions of the 16S and 23S rRNAs, was associated with the P removal performance of the reactor. At one stage of the reactor operation, chemical characterization revealed that extremely poor P removal was occurring. However, like in typical P-removing sludges, complete anaerobic uptake of the carbon substrate occurred. Bacteria inhibiting P remo..

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University of Melbourne Researchers