Please use this identifier to cite or link to this item:
|Title:||Proliferation of glycogen accumulating organisms induced by Fe(III) dosing in a domestic wastewater treatment plant|
Glycogen accumulating organisms
Polyphosphate accumulating organisms
|Citation:||Jobbágy, A., Literáthy, B., Wong, M.-T., Tardy, G., Liu, W.-T. (2006). Proliferation of glycogen accumulating organisms induced by Fe(III) dosing in a domestic wastewater treatment plant. Water Science and Technology 54 (1) : 101-109. ScholarBank@NUS Repository. https://doi.org/10.2166/wst.2006.377|
|Abstract:||To meet the effluent requirements given for the sensitive receiving body, the Southpest Wastewafer Treatment Plant of Budapest, Hungary uses a combined activated sludge-biofilter system with chemical precipitation for P removal. Causes of the proliferation of glycogen accumulating organisms (GAOs) observed in the unaerated/oxic activated sludge unit of this system were investigated both in full-scale and in lab-scale experiments combined with a detailed analysis of the microbial communities. Concentration profile measurements throughout the 8-stage activated sludge unit indicated anaerobic conditions in the first two unaerated reactors and low orthophosphate level (< 1 mg l-1) in all of the stages that could not be attributed to the influent quality, but to Fe (III)-dosing to the returned activated sludge. Microbiological analysis revealed the presence of GAOs from the GB group in the Gammaproteobacteria and occasionally tetrad-forming organisms from Actinobacteria, and the absence of Rhodocyclus-related polyphosphate accumulating organisms (PAOs) in the activated sludge samples. Comparative lab-scale studies carried out in two identically arranged UCT-systems with staged anoxic reactors also confirmed that Fe (III)-dosing may result in phosphorus deficiency of the microbial niche, leading to the suppression of growth and EBPR activity of PAOs and to the proliferation of GAOs. © IWA Publishing 2006.|
|Source Title:||Water Science and Technology|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Mar 25, 2019
WEB OF SCIENCETM
checked on Mar 6, 2019
checked on Oct 26, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.