Abstract

A bacterial community in activated sludge from a full-scale municipal wastewater treatment plant was monitored throughout the year with the use of FISH, RISA and DGGE techniques. In the investigated range of temperatures (11.9-21.6 degrees C), a rise in temperature resulted in a lower total bacteria richness, while organic load rate changes from 0.09 to 0.21 g COD x g TSS(-1) x d(-1) were positively correlated with the number of bands in RISA patterns. The most diverse pattern (29 different bands) was characteristic for the activated sludge sample collected at the end of January at wastewater temperature of 11.9 degrees C. The ammonia-oxidising bacteria community did not change during the study, and comprised of 4 different bacterial populations with one dominant species closely related to Nitrosospira sp. REGAU (GenBank accession number AY635572.1). The percentage of ammonia-oxidising bacteria in the activated sludge varied from 6.2 to 19.5% and depended on temperature (R = 0.61, p = 0:02) and organic load rate (R = -0.55, p = 0.04).

Links

Publisher Full Text

Authors

Cydzik-Kwiatkowska A, Zielińska M, Wojnowska-Baryła I

Institution

University of Warmia and Mazury in Olsztyn, Department of Environmental Biotechnology. agnieszka.cydzik@uwm.edu.pl

Source

Polish journal of microbiology / Polskie Towarzystwo Mikrobiologów = The Polish Society of Microbiologists 61:1 2012 pg 41-9

MeSH

Ammonia
Bacteria
Denaturing Gradient Gel Electrophoresis
In Situ Hybridization, Fluorescence
Nucleic Acid Denaturation
Sequence Analysis, DNA
Sewage
Temperature
Waste Disposal, Fluid
Water Purification

Pub Type(s)

Journal Article

Language

eng

PubMed ID

22708345