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Feasibility of Micropollutants Treatment by Coupling Nanofiltration and Electrochemical Oxidation: Case of Hospital Wastewater

Lan, Yandi and Coetsier, Clémence and Causserand, Christel and Groenen-Serrano, Karine Feasibility of Micropollutants Treatment by Coupling Nanofiltration and Electrochemical Oxidation: Case of Hospital Wastewater. (2015) International Journal of Chemical Reactor Engineering, vol. 13 (n° 2). pp. 153-159. ISSN 1542-6580

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Official URL: http://dx.doi.org/10.1515/ijcre-2014-0136

Abstract

In spite of good performances of the membrane bioreactor (MBR) process, permeate from it can still con- tain refractory pollutants that have to be removed before water reuse or discharge. The present study is an attempt to combine the advantages of two well-known technolo- gies, which are nanofiltration (NF) and electrochemical oxidation (EO) to treat MBR effluent from hospital waste- water. The concept is based on a preconcentration of micropollutants with a reduction of the wastewater volume by NF and treatment of the NF retentate by oxidation. During filtration process the rejection of cipro- floxacin, as a target molecule, reached beyond 97%. Then the NF retentate was treated by EO using a boron- doped diamond anode (BDD). Galvanostatic electrolyses showed that this anode is efficient to mineralize not only ciprofloxacin but also all the micropollutants and organics contained in MBR effluent. The results demon- strated that rapid mineralization occurred: the removal of total organic carbon and chemical oxygen demand (COD) reached 97% and 100%, respectively, in our conditions in 300 min maximum. The specific energy consumption for the total removal of COD was calculated to be 50 kW h kg ˗1 COD.

Item Type:Article
Additional Information:Thanks to De Gruyter editor. The original PDF of the article can be found at International Journal of Chemical Reactor Engineering website : http://www.degruyter.com/view/j/ijcre
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS (FRANCE)
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Deposited By: Clemence Coetsier
Deposited On:24 Jul 2015 12:33

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