Causes of, and control strategies for, Microthrix parvicella bulking and foaming in nutrient removal activated sludge systems

Mamais, D; Andreadakis, A; Noutsopoulos, C; Kalergis, C

dc.contributor.author	Mamais, D	en
dc.contributor.author	Andreadakis, A	en
dc.contributor.author	Noutsopoulos, C	en
dc.contributor.author	Kalergis, C	en
dc.date.accessioned	2014-03-01T02:41:31Z
dc.date.available	2014-03-01T02:41:31Z
dc.date.issued	1998	en
dc.identifier.issn	0273-1223	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/30512
dc.subject	Bulking	en
dc.subject	Microthrix parvicella	en
dc.subject	Nutrient removal	en
dc.subject	Reactor configuration	en
dc.subject	Selector	en
dc.subject	Substrate effect	en
dc.subject.classification	Engineering, Environmental	en
dc.subject.classification	Environmental Sciences	en
dc.subject.classification	Water Resources	en
dc.subject.other	Anaerobic digestion	en
dc.subject.other	Bacteria	en
dc.subject.other	Biodegradation	en
dc.subject.other	Bioreactors	en
dc.subject.other	Foam control	en
dc.subject.other	Growth kinetics	en
dc.subject.other	Bulking	en
dc.subject.other	Foaming	en
dc.subject.other	Activated sludge process	en
dc.subject.other	acetic acid	en
dc.subject.other	long chain fatty acid	en
dc.subject.other	oleic acid	en
dc.subject.other	activated sludge	en
dc.subject.other	foaming	en
dc.subject.other	nutrient	en
dc.subject.other	removal	en
dc.subject.other	activated sludge	en
dc.subject.other	bacterial growth	en
dc.subject.other	biodegradation	en
dc.subject.other	bioreactor	en
dc.subject.other	conference paper	en
dc.subject.other	control	en
dc.subject.other	controlled study	en
dc.subject.other	foam	en
dc.subject.other	Gram positive bacterium	en
dc.subject.other	Microthrix	en
dc.subject.other	nonhuman	en
dc.subject.other	nutrient	en
dc.subject.other	temperature	en
dc.subject.other	Bacteria (microorganisms)	en
dc.subject.other	Candidatus Microthrix parvicella	en
dc.subject.other	Posibacteria	en
dc.title	Causes of, and control strategies for, Microthrix parvicella bulking and foaming in nutrient removal activated sludge systems	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1016/S0273-1223(98)00078-X	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0273-1223(98)00078-X	en
heal.language	English	en
heal.publicationDate	1998	en
heal.abstract	Bench and pilot scale nutrient removal activated sludge units were used to examine the effect of factors such as temperature, substrate type (easily biodegradable in the form of acetate and slowly biodegradable in the form of oleic acid) on Microthrix parvicella growth. The configurations examined include complete mix with and without selectors (anoxic and anaerobic) and plug flow reactors. The results indicate that low temperatures and substrates in the form of long chain fatty acids favour the growth of M. parvicella. With respect to reactor configuration, a plug flow configuration was shown to be quite effective in controlling the growth of M. parvicella and producing a sludge with good settling characteristics, while the presence of a selector, either anoxic or anaerobic, had no significant effect on the growth of M. parvicella.Bench and pilot scale nutrient removal activated sludge units were used to examine the effect of factors such as temperature, substrate type (easily biodegradable in the form of acetate and slowly biodegradable in the form of oleic acid) on Microthrix parvicella growth. The configurations examined include complete mix with and without selectors (anoxic and anaerobic) and plug flow reactors. The results indicate that low temperatures and substrates in the form of long chain fatty acids favour the growth of M. parvicella. With respect to reactor configuration, a plug flow configuration was shown to be quite effective in controlling the growth of M. parvicella and producing a sludge with good settling characteristics, while the presence of a selector, either anoxic or anaerobic, had no significant effect on the growth of M. parvicella.	en
heal.publisher	Elsevier Sci Ltd, Exeter, United Kingdom	en
heal.journalName	Water Science and Technology	en
dc.identifier.doi	10.1016/S0273-1223(98)00078-X	en
dc.identifier.isi	ISI:000073933300003	en
dc.identifier.volume	37	en
dc.identifier.issue	4-5	en
dc.identifier.spage	9	en
dc.identifier.epage	17	en