Please use this identifier to cite or link to this item: https://doi.org/10.2166/wst.2006.377
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dc.titleProliferation of glycogen accumulating organisms induced by Fe(III) dosing in a domestic wastewater treatment plant
dc.contributor.authorJobbágy, A.
dc.contributor.authorLiteráthy, B.
dc.contributor.authorWong, M.-T.
dc.contributor.authorTardy, G.
dc.contributor.authorLiu, W.-T.
dc.date.accessioned2014-10-08T08:33:26Z
dc.date.available2014-10-08T08:33:26Z
dc.date.issued2006
dc.identifier.citationJobbágy, 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
dc.identifier.issn02731223
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/87603
dc.description.abstractTo 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.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.2166/wst.2006.377
dc.sourceScopus
dc.subjectActivated sludge
dc.subjectChemical precipitation
dc.subjectGlycogen accumulating organisms
dc.subjectPhosphorus removal
dc.subjectPolyphosphate accumulating organisms
dc.typeArticle
dc.contributor.departmentDIVISION OF ENVIRONMENTAL SCIENCE & ENGG
dc.description.doi10.2166/wst.2006.377
dc.description.sourcetitleWater Science and Technology
dc.description.volume54
dc.description.issue1
dc.description.page101-109
dc.description.codenWSTED
dc.identifier.isiut000239498100013
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