Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
687664 | Chemical Engineering and Processing: Process Intensification | 2009 | 8 Pages |
Abstract
A novel process has been developed at pilot scale for the treatment of olive mill wastewater (OMW), which combines electro-Fenton, anaerobic digestion and ultrafiltration. Application of electro-Fenton procedure in semi-continuous mode permitted high removal efficiencies of chemical oxygen demand (COD) (50%) and monophenolic compounds (95%). This pre-treatment was found to enhance the anaerobic activity of an up-flow anaerobic filter (300 l) significantly. In the bioreactor, COD removal efficiency of 75% was reached at a hydraulic retention time of 4.5 d and an organic loading rate of 10 g COD lâ1 dâ1. The use of ultrafiltration technology as a post-treatment completely detoxified the anaerobic effluent and removed its high molecular mass polyphenols. An economic calculation of this treatment process revealed that a surplus of energy of 73.5 kWh could be recovered after the treatment of 1 m3.
Keywords
VFAHMMTSSLMMHRTOMWTMPBOD5Volatile fatty acidsElectro-FentonUltrafiltrationBiological Oxygen Demandchemical oxygen demandhigh molecular masslow molecular masshydraulic retention timeToxicityGermination indexOlive mill wastewatersOlive mill wastewaterTransmembrane pressureAnaerobic filtertotal suspended solidsBioluminescence inhibitionAnaerobic digestionPolyphenolsCod
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Process Chemistry and Technology
Authors
Sonia Khoufi, Fathi Aloui, Sami Sayadi,