Use of a membrane bioreactor for denitrification of brine from an electrodialysis process
| Autor: | Claude Gavach, Christelle Wisniewski, Alain Grasmick, Roger Sandeaux, Florence Lutin, Françoise Persin, Toufik Cherif |
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| Přispěvatelé: | Institut Européen des membranes (IEM), Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM), Centre National de la Recherche Scientifique (CNRS), Eurodia industrie |
| Rok vydání: | 2002 |
| Předmět: |
Denitrification
General Chemical Engineering 02 engineering and technology 010501 environmental sciences Membrane bioreactor 01 natural sciences Membrane technology chemistry.chemical_compound 020401 chemical engineering Nitrate Bioreactor [CHIM]Chemical Sciences General Materials Science 0204 chemical engineering ComputingMilieux_MISCELLANEOUS 0105 earth and related environmental sciences Water Science and Technology Chromatography Membrane reactor Mechanical Engineering General Chemistry Electrodialysis Pulp and paper industry 6. Clean water chemistry 13. Climate action Water treatment |
| Zdroj: | Desalination Desalination, Elsevier, 2002, 149 (1-3), pp.331-336. ⟨10.1016/S0011-9164(02)00805-6⟩ |
| ISSN: | 0011-9164 1873-4464 |
| Popis: | Electrodialysis (ED) is an efficient process for the treatment of drinking water with high nitrate concentration. However it achieves only a transfer of pollution by producing concentrated brines. This study demonstrated the feasibility of ED brine denitrification in a membrane bioreactor (MBR). The results showed the high efficiency of the MBR despite the drastic conditions of nitrate concentration, pH and salinity of the ED concentrates. The denitrification kinetics close to 0.01 mgNO 3 – -N mgVSS –1 h –1 were in agreement with the literature values obtained with usual conditions. Next, the efficiency and performance of the hybrid process to treat ground water contaminated by nitrate was demonstrated in situ at Rodilhan (France). After ED treatment, the nitrate concentration of the treated water remained below the acceptable value (50 mg l –1 ) and a softening of the treated water was obtained. The membrane bioreactor allowed the almost total destruction of ED concentrate nitrate (99 %) with kinetics close to 0.3 kgNO 3 – -N kgVSS –1 d –1 and a sludge production of 0.5 gVSS gNO 3 – . |
| Databáze: | OpenAIRE |
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