The effects of olives harvest period and production year on olive mill wastewater properties – Evaluation of Pleurotus strains as bioindicators of the effluent’s toxicity

Physicochemical analysis and adequation of olive oil mill wastewater after advanced oxidation process for reclamation by pressure-driven membrane technology

“…Neither can OMW be disposed directly for irrigation purposes (Niaounakis and Halvadakis, 2006;Paraskeva and Diamadopoulos, 2006). OMW discharge leads to odor nuisance, soil contamination, plant growth inhibition, underground leaks, water body pollution and hindrance of self-purification processes, as well as dramatic impacts to the aquatic fauna and to the ecological status (Asfi et al, 2012;Danellakis et al, 2011;Karaouzas et al, 2011;Ntougias et al, 2013). In 1981 the Spanish Government prohibited the direct discharge of these effluents into rivers, since high pollution levels were detected in the Guadalquivir River Basin.…”

Impacts of operating conditions on nanofiltration of secondary-treated two-phase olive mill wastewater

“…Direct discharge of these effluents to the environment involves hazardous pollution consequences and impacts to the ecological status: strong odor nuisance to the surroundings, contamination of soil, pollution of water bodies and inhibition of self-purification processes, as well as phytotoxic damage to the aquatic fauna and hindrance of plants growth (Asfi et al, 2012;Danellakis et al, 2011;Karaouzas et al, 2011;Niaounakis and Halvadakis, 2006;Ntougias et al, 2013;Paraskeva and Diamadopoulos, 2006).…”

Evidence of inert fractions in olive mill wastewater by size and structural fractionation before and after thermal acid cracking treatment

“…Besides its high organic loading: the presence of polyphenols and tannins, high concentration of suspended solids (SS) and its acidity render OMW, highly recalcitrant to conventional wastewater treatment [3]. Until now, several methods have been proposed for the treatment of OMW such as lagooning, evaporation, co-composting [4], chemical oxidation and coagulation [5], biological processes including anaerobic, aerobic and fungal treatment [6] as well as membrane technologies [7]. A variety of advanced oxidation processes [8,9] such as catalytic ozonation, Fenton and Photo-Fenton processes as well as heterogeneous TiO 2 -mediated photocatalysis have been proposed for OMW treatment.…”