Treatability of chemically treated olive mill wastewater together with a domestic wastewater using respirometric method
Date
2008
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Foundation Enviromental Protection & Reseach-Ferp
Abstract
In this study, treatability of olive mill wastewater which had previously been treated physico-chemically together with domestic wastewater has been investigated using respirometric method. Olive mill wastewater (OMW) samples have been taken from a factory which produces olive oil with continuous method in Bursa. Acid cracking and physico-chemical treatability studies of the OMW have been carried out; a variety of coagulants with different dosages have been tested to achieve maximum removals of COD, SS and phenol. At 8000 mg/L alum concentration; 69% COD, 74% phenol and 87% SS whereas at 8000 mg/L ferric(III) chloride concentration; 80% COD, 79% phenol and 91% SS and whereas at 6000 mg/L Ca(OH)(2) concentration; 80% COD, 85% phe-nol and 86% SS removals were achieved. When ONW was mixed with activated sludge (SS = 3200 mg/L) at 1/1 (h/h), 1/2 (h/h) and 2/1 (h/h) ratios, decreases in respiration activity of 67%, 79% and 75% have respectively been observed. Among the three, only for the 1/2 (h/h) ratio of OMW/AS mixture in which OMW had previously been treated by lime, alum and ferric (III) chloride showed increases in respiration activities of 81%, 9% and 25%, respectively. Therefore, it can be said that OMW which was previously treated chemically with lime, alum and ferric (III) chloride, can be co-treated with domestic wastewater at a 1/2 (h/h) ratio. Among the three chemicals, lime could be preferred due to better removal efficiencies of COD, SS and phenol and lower cost.
Description
Keywords
Environmental sciences & ecology, Domestic wastewater, Olive mill wastewater, Physico-chemical treatment, Respirometric method, Ozonaion, Acid, Chemical oxygen demand, Domestic waste, Phenol, Physicochemical property, Wastewater, Water treatment, Ome
Citation
Mert, B.K. vd. (2008). "Treatability of chemically treated olive mill wastewater together with a domestic wastewater using respirometric method". Ekoloji, 17(66), 39-46.