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Removal of phosphate from synthetic wastewater by struvite precipitation in a stirred reactor

Azzaro-Pantel, Catherine and Biscans, Béatrice and Domenech, Serge and Freche, Michèle and Hanhoun, Mary and Montastruc, Ludovic and Pibouleau, Luc Removal of phosphate from synthetic wastewater by struvite precipitation in a stirred reactor. (2009) In: COVAPHOS III-The Third International conference on the on the valorization of phosphates and phosphorus compounds, 18-20 March 2009, Morocco .

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Abstract

The cost of environmental protection and pollution prevention is increasing, above all because of stringent effluent quality standard. In that context, phosphorus impact on water pollution plays a major role because it accelerates eutrophication. This work addresses the problem of phosphorus recovery from synthetic wastewater by struvite precipitation. The general objective is to develop a methodology for an optimal design of an automated pilot reactor for the treatment of wastewater. In this perspective, preliminary precipitation experiments were carried out at laboratory scale to examine the effects of final pH, magnesium and phosphate concentrations in the influent. A thermodynamic model for struvite precipitation is proposed involving Davies activity coefficients. Keywords: Struvite, Precipitation, P-recovery, Stirred reactor, Modelling.

Item Type:Conference or Workshop Item (Speech)
Audience (journal):International peer-reviewed journal
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
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Deposited By: Guylène Abadie

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