Modeling and controlling clarifier-thickeners fed by suspensions with time-dependent properties

Betancourt, F; Burger, R; Diehl, S; Faras, S

Abstract

A one-dimensional model of the process of continuous sedimentation in a clarifier-thickener unit is presented. The governing model is expressed as a system of two nonlinear partial differential equations for the solids volume fraction and the varying settling velocity of the solids as functions of depth and time. This model extends the well-known model for the dynamics of a flocculated suspension in a clarifier-thickener advanced by Burger et al. (2005). Operating charts are calculated to be used for the control of steady states, in particular, to keep the sediment level and the underflow volume fraction at desired values. A numerical scheme and a simple regulator are proposed and numerical simulations are performed. (c) 2013 Elsevier Ltd. All rights reserved.

Más información

Título según WOS: Modeling and controlling clarifier-thickeners fed by suspensions with time-dependent properties
Título según SCOPUS: Modeling and controlling clarifier-thickeners fed by suspensions with time-dependent properties
Título de la Revista: MINERALS ENGINEERING
Volumen: 62
Editorial: PERGAMON-ELSEVIER SCIENCE LTD
Fecha de publicación: 2014
Página de inicio: 91
Página final: 101
Idioma: English
DOI:

10.1016/j.mineng.2013.12.011

Notas: ISI, SCOPUS