Skip to Main content Skip to Navigation
Theses

PROCEDES INTEGRES COUPLANT L'ELECTRODIALYSE ET LE TRAITEMENT BIOLOGIQUE : INFLUENCE DE LA COMPOSITION IONIQUE ET APPLICATION AU TRAITEMENT DES EFFLUENTS SALINS

Abstract : The aim of the study is to evaluate to what extend the treatment of salted liquid waste can be improved by the integration of electrodialysis upstream the biological step. Firstly, a theoretical approach of the different phenomena involved in electrodialysis was used to provide relationships between the characterise parameters of the mass transfer, the operating parameters and the composition of the fluid to be treated. More over, the influence of the mineral ions hydration on the transfer coefficient of the organic matter was emphasized. In this manner, the general character of the solvatation effect, observed with different species, membranes and driving force, was demonstrated. Secondly, we have studied the influence of the ionic composition on the biological activity, characterized by the micro-organisms growth rate. Results have showed the existence of a limit concentration value, above which the specific growth rate decreased. This concentration, which depends on the salt nature, corresponds to an osmotic pressure only value. The demineralisation factor to be reach by the electrodialysis step corresponds to this osmotic value in order to have an optimum biodegradation. Finally, the methodology pointed out with synthetic model waste was validated with an industrial waste. Key words : salt liquid waste, electrodialysis, biological degradation, mass transfer, physico-chemistry
Complete list of metadatas

Cited literature [69 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-00460904
Contributor : Elodie Singlande <>
Submitted on : Tuesday, March 2, 2010 - 5:51:34 PM
Last modification on : Friday, January 10, 2020 - 9:08:43 PM
Long-term archiving on: : Friday, June 18, 2010 - 7:25:11 PM

Identifiers

  • HAL Id : tel-00460904, version 1

Collections

Citation

Elodie Singlande. PROCEDES INTEGRES COUPLANT L'ELECTRODIALYSE ET LE TRAITEMENT BIOLOGIQUE : INFLUENCE DE LA COMPOSITION IONIQUE ET APPLICATION AU TRAITEMENT DES EFFLUENTS SALINS. Génie des procédés. Université Paul Sabatier - Toulouse III, 2006. Français. ⟨tel-00460904⟩

Share

Metrics

Record views

567

Files downloads

9026