Treatment of septage using single and two stage activated sludge batch reactors systems

Andreadakis, AD; Kondili, G; Mamais, D; Noussi, A

dc.contributor.author	Andreadakis, AD	en
dc.contributor.author	Kondili, G	en
dc.contributor.author	Mamais, D	en
dc.contributor.author	Noussi, A	en
dc.date.accessioned	2014-03-01T02:41:08Z
dc.date.available	2014-03-01T02:41:08Z
dc.date.issued	1995	en
dc.identifier.issn	0273-1223	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/30381
dc.subject	Cyclic batch activated sludge systems	en
dc.subject	Denitrification	en
dc.subject	Nitrification	en
dc.subject	Septage	en
dc.subject	Sequencing batch reactors	en
dc.subject	Two stage treatment	en
dc.subject.classification	Engineering, Environmental	en
dc.subject.classification	Environmental Sciences	en
dc.subject.classification	Water Resources	en
dc.subject.other	Anoxic cycles	en
dc.subject.other	Cesspools	en
dc.subject.other	Cyclic batch activated sludge systems	en
dc.subject.other	Septage	en
dc.subject.other	Septage treatment	en
dc.subject.other	Sequencing batch reactors	en
dc.subject.other	Two stage treatment	en
dc.subject.other	Bioreactors	en
dc.subject.other	Chemical oxygen demand	en
dc.subject.other	Denitrification	en
dc.subject.other	Nitrates	en
dc.subject.other	Nitrification	en
dc.subject.other	Nitrogen	en
dc.subject.other	Reduction	en
dc.subject.other	Wastewater treatment	en
dc.subject.other	Activated sludge process	en
dc.subject.other	nitrate	en
dc.subject.other	nitrogen	en
dc.subject.other	activated sludge	en
dc.subject.other	aeration	en
dc.subject.other	biodegradation	en
dc.subject.other	bioreactor	en
dc.subject.other	chemical oxygen demand	en
dc.subject.other	conference paper	en
dc.subject.other	denitrification	en
dc.subject.other	nitrification	en
dc.subject.other	waste water management	en
dc.title	Treatment of septage using single and two stage activated sludge batch reactors systems	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1016/0273-1223(96)00080-7	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0273-1223(96)00080-7	en
heal.language	English	en
heal.publicationDate	1995	en
heal.abstract	The cyclic or sequencing batch activated sludge process was applied for the treatment of septage originating from cesspools serving non-sewered areas. Single and two stage systems were investigated in bench scale units. The single stage aerated system was capable in removing practically all the biodegradable COD and producing a well stabilised excess sludge with excellent settling and thickening characteristics. With respect to nitrogen the average removal rate was to the order of 70%, but the performance was unstable due to periodic strong inhibition of the nitrification process. Subsequent treatment in a second stage aerated unit improved nitrification but did not result in higher nitrogen removal rates due to the increased concentrations of oxidised nitrogen, An anoxic second stage post denitrification unit resulted in an overall nitrogen removal of 88%, through a substantial reduction of nitrates. Further improvement of the system, with nitrogen removal of about 95% and average effluent nitrogen concentrations lower than 10 mg.l(-1), can be achieved by adoption of a two stage system consisting of a first aerated stage unit, followed by a second stage unit with alternating aerated and anoxic cycles and addition of external carbon during the anoxic cycle.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Water Science and Technology	en
dc.identifier.doi	10.1016/0273-1223(96)00080-7	en
dc.identifier.isi	ISI:A1995UC24000013	en
dc.identifier.volume	32	en
dc.identifier.issue	9-10	en
dc.identifier.spage	95	en
dc.identifier.epage	104	en