Co-treatment of septage and domestic sewage for the greater Athens area

Andreadakis, AD

dc.contributor.author	Andreadakis, AD	en
dc.date.accessioned	2014-03-01T02:40:56Z
dc.date.available	2014-03-01T02:40:56Z
dc.date.issued	1992	en
dc.identifier.issn	0273-1223	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/30289
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0026616018&partnerID=40&md5=e120db27ddaabf0a80e74a6a060cce4c	en
dc.subject	SEPTAGE	en
dc.subject	TREATMENT PLANT OPERATION	en
dc.subject	PRIMARY SEDIMENTATION	en
dc.subject	ACTIVATED SLUDGE	en
dc.subject	BULKING	en
dc.subject	ANAEROBIC DIGESTION	en
dc.subject.classification	Engineering, Environmental	en
dc.subject.classification	Environmental Sciences	en
dc.subject.classification	Water Resources	en
dc.subject.other	Refuse Disposal - Digestion	en
dc.subject.other	Sewage Treatment - Activated Sludge	en
dc.subject.other	Sewage Treatment - Biochemical Oxygen Demand	en
dc.subject.other	Sewage Treatment - Sedimentation	en
dc.subject.other	Sewage Treatment Plants - Athens, Greece	en
dc.subject.other	Anaerobic Digestion	en
dc.subject.other	Bulking	en
dc.subject.other	Primary Sedimentation	en
dc.subject.other	Septage	en
dc.subject.other	Treatment Plant Operation	en
dc.subject.other	Sewage Treatment Plants	en
dc.subject.other	activated sludge	en
dc.subject.other	anaerobic digestion	en
dc.subject.other	biochemical oxygen demand	en
dc.subject.other	city	en
dc.subject.other	conference paper	en
dc.subject.other	domestic waste	en
dc.subject.other	effluent standard	en
dc.subject.other	greece	en
dc.subject.other	performance	en
dc.subject.other	sewage treatment	en
dc.subject.other	sludge stabilization	en
dc.subject.other	sludge thickening	en
dc.subject.other	Athens/Greece	en
dc.subject.other	Performance	en
dc.subject.other	Sewage Treatment	en
dc.subject.other	Treatment Plant	en
dc.subject.other	domestic sewage	en
dc.subject.other	sludge treatment	en
dc.subject.other	treatment plant	en
dc.subject.other	Greece, Athens	en
dc.title	Co-treatment of septage and domestic sewage for the greater Athens area	en
heal.type	conferenceItem	en
heal.language	English	en
heal.publicationDate	1992	en
heal.abstract	The paper evaluates the performance of the Metamorphosis treatment plant, designed to treat 20,000 m3.d-1 domestic sewage and 24,000 m3.d-1 septage from the Greater Athens region. During the period 1987-1989 the plant received about one third of the design load. Sewage and septage were subjected to separate preliminary and primary treatment and subsequently to joint activated sludge treatment. The performance of the treatment plant was satisfactory, resulting in an overall mean effluent BOD5 concentration of 24 mg.1-1 and an adequately stabilised sludge. However, persistent sludge bulking, which prevailed for most of the studied period, casts doubts on the effectiveness of future performance at full load, not only with respect to final effluent quality but also in relation to the degree of sludge stabilisation, due to possible short retention times in the digestors. Identification of the causes of bulking through systematic research and improvement of the sludge thickening processes are two priority aspects which should be presently addressed, in order to ensure efficient future performance of the plant.The paper evaluates the performance of the Metamorphosis treatment plant, designed to treat 20,000 m3.d-1 domestic sewage and 24,000 m3.d-1 septage from the Greater Athens region. During the period 1987-1989 the plant received about one third of the design load. Sewage and septage were subjected to separate preliminary and primary treatment and subsequently to joint activated sludge treatment. The performance of the treatment plant was satisfactory, resulting in an overall mean effluent BOD5 concentration of 24 mg.l-1 and an adequately stabilized sludge. However, persistent sludge bulking, which prevailed for most of the studied period, casts doubts on the effectiveness of future performance at full load, not only with respect to final effluent quality but also in relation to the degree of sludge stabilization, due to possible short retention times in the digestors. Identification of the causes of bulking through systematic research and improvement of the sludge thickening processes are two priority aspects which should be presently addressed, in order to ensure efficient future performance of the plant.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Water Science and Technology	en
dc.identifier.isi	ISI:A1992JD16700013	en
dc.identifier.volume	25	en
dc.identifier.issue	4-5	en
dc.identifier.spage	119	en
dc.identifier.epage	126	en