Effect of pretreatment on the enhancement of biodegradation of olive mill effluent for treatment in an anaerobic cross-flow filter reactor

In this study, various chemical and advanced oxidation processes were tested for enhancement of anaerobic biodegradation of olive mill effluent (OME). The experiments were carried out in a 20 L lab-scale ACF reactor packed with cross-flow filter material made of water-resistant cardboard with a spec...

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Bibliographic Details
Published in:Chemical and biochemical engineering quarterly 2012-03, Vol.26 (1), p.23
Main Authors: Keskin, T, Tutuk, F, Azbar, N
Format: Article
Language:English
Subjects:
Biodegradation
Chemical reactors
Control
Effluent quality
Environment
Environmental aspects
Equipment and supplies
Methods
Mills and mill-work
Purification
Quality control
Sewage
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Summary:In this study, various chemical and advanced oxidation processes were tested for enhancement of anaerobic biodegradation of olive mill effluent (OME). The experiments were carried out in a 20 L lab-scale ACF reactor packed with cross-flow filter material made of water-resistant cardboard with a specific surface area of ~300 [m.sup.2] [m.sup.-3]. The ACF reactor was operated at chosen OLR conditions and fed with different pre-treated OME samples for 240 days (717 days in total). All pretreatment options used in this study improved the anaerobic biological degradation in terms of COD, phenolics and color removal efficiencies. Best effluent quality (5700 ± 250 mg COD per liter) was obtained by using the Fenton process as a pre-treatment. This effluent value is still higher than the official discharge limit for COD (4000 mg COD per liter) in Turkey. Therefore, additional final treatment (e.g. membrane filtration) may be required before discharging into the sewer line. Key words: Olive mill effluent, up-flow anaerobic cross-flow filter, organic loading rate, chemical pre-treatment, AOPs
ISSN:0352-9568