Investigation of long-term operation and biomass activity in a membrane bioreactor system

Malamis, S; Andreadakis, A; Mamais, D; Noutsopoulos, C

dc.contributor.author	Malamis, S	en
dc.contributor.author	Andreadakis, A	en
dc.contributor.author	Mamais, D	en
dc.contributor.author	Noutsopoulos, C	en
dc.date.accessioned	2014-03-01T01:35:53Z
dc.date.available	2014-03-01T01:35:53Z
dc.date.issued	2011	en
dc.identifier.issn	0273-1223	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21240
dc.subject	Biomass activity	en
dc.subject	Fouling	en
dc.subject	Fractionation	en
dc.subject	MBR	en
dc.subject.classification	Engineering, Environmental	en
dc.subject.classification	Environmental Sciences	en
dc.subject.classification	Water Resources	en
dc.subject.other	Biomass activity	en
dc.subject.other	Characterisation	en
dc.subject.other	Deflocculation	en
dc.subject.other	Extra-cellular polymeric substances	en
dc.subject.other	Fouling rate	en
dc.subject.other	Long term performance	en
dc.subject.other	Long-term operation	en
dc.subject.other	MBR	en
dc.subject.other	Membrane bioreactor	en
dc.subject.other	Membrane bioreactor system	en
dc.subject.other	Operating condition	en
dc.subject.other	Oxygen uptake rates	en
dc.subject.other	Solids retention time	en
dc.subject.other	Biomass	en
dc.subject.other	Membrane fouling	en
dc.subject.other	Wastewater	en
dc.subject.other	Bioreactors	en
dc.subject.other	polymer	en
dc.subject.other	aeration	en
dc.subject.other	biomass	en
dc.subject.other	bioreactor	en
dc.subject.other	flocculation	en
dc.subject.other	fouling	en
dc.subject.other	fractionation	en
dc.subject.other	membrane	en
dc.subject.other	microbial activity	en
dc.subject.other	oxygen	en
dc.subject.other	wastewater	en
dc.subject.other	aeration	en
dc.subject.other	article	en
dc.subject.other	biofouling	en
dc.subject.other	biomass production	en
dc.subject.other	membrane reactor	en
dc.subject.other	microbial growth	en
dc.subject.other	oxygen consumption	en
dc.subject.other	solids retention time	en
dc.subject.other	time	en
dc.subject.other	waste water	en
dc.subject.other	Biomass	en
dc.subject.other	Bioreactors	en
dc.subject.other	Membranes, Artificial	en
dc.subject.other	Time Factors	en
dc.subject.other	Waste Disposal, Fluid	en
dc.subject.other	Water Pollutants	en
dc.subject.other	Water Purification	en
dc.title	Investigation of long-term operation and biomass activity in a membrane bioreactor system	en
heal.type	journalArticle	en
heal.identifier.primary	10.2166/wst.2011.416	en
heal.identifier.secondary	http://dx.doi.org/10.2166/wst.2011.416	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	The aim of this work was to evaluate the long-term performance of a Membrane Bioreactor (MBR) that operated continuously for 2.5 years and to assess membrane fouling and biomass activity under various operating conditions. Furthermore, a method for the characterisation of influent wastewater was developed based on its separation into various fractions. The MBR system operated at the solids retention times (SRT) of 10, 15, 20 and 33 days. The increase of SRT resulted in a decrease of the fouling rate associated with the reduction of extracellular polymeric substances. Moreover, the SRT increase resulted in a significant reduction of the Oxygen Uptake Rate (OUR) due to the lower availability of substrate and in a notable decrease of the maximum OUR since high SRT allowed the development of slower growing microorganisms. Biomass consisted of small flocs due to extensive deflocculation caused by intense aeration. Finally, the method developed for wastewater characterisation is straightforward and less time consuming than the usual method that is employed. © IWA Publishing 2011.	en
heal.publisher	IWA PUBLISHING	en
heal.journalName	Water Science and Technology	en
dc.identifier.doi	10.2166/wst.2011.416	en
dc.identifier.isi	ISI:000291184100016	en
dc.identifier.volume	63	en
dc.identifier.issue	9	en
dc.identifier.spage	1906	en
dc.identifier.epage	1912	en