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Two-stage chemical-biological treatment at Thessaloniki greater area WWTP - experiences and potentials

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dc.contributor.author Andreadakis, AD en
dc.contributor.author Kristensen, GH en
dc.contributor.author Papadopoulos, A en
dc.contributor.author Oikonomopoulos, C 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 http://hdl.handle.net/123456789/30382
dc.subject Activated sludge en
dc.subject Bulking en
dc.subject Chemical-biological treatment en
dc.subject Chlorine dioxide disinfection en
dc.subject Treatment plant start-up en
dc.subject.classification Engineering, Environmental en
dc.subject.classification Environmental Sciences en
dc.subject.classification Water Resources en
dc.subject.other Activated sludge process en
dc.subject.other Biological water treatment en
dc.subject.other Chemicals removal (water treatment) en
dc.subject.other Chlorine compounds en
dc.subject.other Cost effectiveness en
dc.subject.other Discharge (fluid mechanics) en
dc.subject.other Disinfection en
dc.subject.other Microorganisms en
dc.subject.other Oxides en
dc.subject.other Plant startup en
dc.subject.other Water treatment plants en
dc.subject.other Bulking en
dc.subject.other Chemical biological treatment en
dc.subject.other Chlorine dioxide disinfection en
dc.subject.other Effluent quality en
dc.subject.other Influent flows en
dc.subject.other Thessaloniki gulf en
dc.subject.other Treatment plant startup en
dc.subject.other Wastewater treatment en
dc.subject.other nitrogen en
dc.subject.other activated sludge en
dc.subject.other city en
dc.subject.other conference paper en
dc.subject.other disinfection en
dc.subject.other greece en
dc.subject.other sludge settling en
dc.subject.other waste water treatment plant en
dc.title Two-stage chemical-biological treatment at Thessaloniki greater area WWTP - experiences and potentials en
heal.type conferenceItem en
heal.identifier.primary 10.1016/0273-1223(96)00078-9 en
heal.identifier.secondary http://dx.doi.org/10.1016/0273-1223(96)00078-9 en
heal.language English en
heal.publicationDate 1995 en
heal.abstract The wastewater from the city of Thessaloniki is discharged without treatment to the nearby inner part of the Thessaloniki Gulf. The existing, since 1989, treatment plant offers only primary treatment and did not operate since the expected effluent quality is not suitable for safe disposal to the available recipients. Upgrading of the plant for advanced biological treatment, including seasonal nitrogen removal, is due from 1995. In the mean time, after minor modifications completed in February 1992, the existing plant was put into operation as a two-stage chemical-biological treatment plant for 40 000 m3 d-1, which corresponds to about 35% of the total sewage flow. The operational results obtained during the two years operation period are presented and evaluated. All sewage and sludge treatment units of the plant perform better than expected,with the exception of the poor sludge settling characteristics, due to severe and persistent bulking caused by excessive growth of filamentous microorganisms, particularly M.Parvicella. Effective control of the bulking problem could lead to more cost-effective operation and increased influent flows.The wastewater from the city of Thessaloniki is discharged without treatment to the nearby inner part of the Thessaloniki Gulf. The existing, since 1989, treatment plant offers only primary treatment and did not operate since the expected effluent quality is not suitable for safe disposal to the available recipients. Upgrading of the plant for advanced biological treatment, including seasonal nitrogen removal, is due from 1995. In the mean time, after minor modifications completed in February 1992, the existing plant was put into operation as a two-stage chemical-biological treatment plant for 40 000 m3 d-1, which corresponds to about 35% of the total sewage flow. The operational results obtained during the two years operation period are presented and evaluated. All sewage and sludge treatment units of the plant perform better than expected, with the exception of the poor sludge settling characteristics, due to severe and persistent bulking caused by excessive growth of filamentous microorganisms, particularly M.Parvicella. Effective control of the bulking problem could lead to more cost-effective operation and increased influent flows. en
heal.publisher Pergamon Press Inc, Tarrytown, NY, United States en
heal.journalName Water Science and Technology en
dc.identifier.doi 10.1016/0273-1223(96)00078-9 en
dc.identifier.isi ISI:A1995UC24000011 en
dc.identifier.volume 32 en
dc.identifier.issue 9-10 en
dc.identifier.spage 75 en
dc.identifier.epage 84 en


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