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Validation and application of a simple model for circular secondary settling tanks

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dc.contributor.author Stamou, AI en
dc.contributor.author Giokas, DL en
dc.contributor.author Kim, Y en
dc.contributor.author Paraskevas, PA en
dc.date.accessioned 2014-03-01T01:29:28Z
dc.date.available 2014-03-01T01:29:28Z
dc.date.issued 2008 en
dc.identifier.issn 1790-7632 en
dc.identifier.uri http://hdl.handle.net/123456789/19270
dc.relation.uri http://www.scopus.com/inward/record.url?eid=2-s2.0-77953331551&partnerID=40&md5=584ba6832a7ef8d62898325e9aca8e4c en
dc.subject Circular secondary settling tasks en
dc.subject Diluted sludge concentration en
dc.subject Dynamic simulation en
dc.subject Non-linear mathematical modelling en
dc.subject Sludge blanket en
dc.subject Steady-state analysis en
dc.subject.classification Environmental Sciences en
dc.subject.other ACTIVATED-SLUDGE CLARIFIER en
dc.subject.other SIMPLE EMPIRICAL-MODEL en
dc.subject.other SUSPENDED-SOLIDS CONCENTRATIONS en
dc.subject.other TREATMENT-PLANT en
dc.title Validation and application of a simple model for circular secondary settling tanks en
heal.type journalArticle en
heal.language English en
heal.publicationDate 2008 en
heal.abstract A simple model is presented for the dynamic calculation of the sludge blanket height and concentrations of suspended solids (diluted, sludge blanket and return sludge) in circular secondary settling tanks. The model combines a mass balance equation with three empirical equations, which account for the main processes. These equations form a non-linear, dynamic system, which cannot be solved explicitly; thus, a trial-and-error method is adopted. Field data were obtained from a full-scale treatment plant in transient and steady state conditions and were used in the calibration, the verification and the application of the model. Model calibration involved the determination of only two coefficients, which were found to be relatively constant in various operating conditions. Model verification and application were successful showing a satisfactory agreement with field data. A discrepancy of the model to over-predict sludge blanket height during sudden hydraulic overloads was noted and explained. Copyright © 2008 Global NEST. en
heal.publisher GLOBAL NETWORK ENVIRONMENTAL SCIENCE & TECHNOLOGY en
heal.journalName Global Nest Journal en
dc.identifier.isi ISI:000254825700009 en
dc.identifier.volume 10 en
dc.identifier.issue 1 en
dc.identifier.spage 62 en
dc.identifier.epage 72 en


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