Ochando-Pulido Javier Miguel, Hodaifa Gassan, Víctor-Ortega María Dolores, Martínez-Ferez Antonio
Chemical Engineering Department, University of Granada, 18071 Granada, Spain.
Molecular Biology and Biochemical Engineering Department, University Pablo de Olavide, 14013 Seville, Spain.
ScientificWorldJournal. 2013 Dec 31;2013:196470. doi: 10.1155/2013/196470. eCollection 2013.
Photocatalytic degradation of olive oil mill wastewater from two-phase continuous centrifugation process was studied. A novel photocatalyst with ferromagnetic properties was characterized and investigated. The degradation capacity of the photocatalytic process of olive oil washing wastewater (OMW) and mixture of olives and olive oil (1 v/v) washing wastewaters (MOMW) was demonstrated. At lab-scale, the %COD removal and residence time (τ) for MOMW and OMW were 58.4% (τ = 2 h) and 21.4% (τ = 3 h), respectively. On the other hand, at pilot scale, 23.4% COD(removal), 19.2% total phenols(removal), and 28.1% total suspended solids(removal) were registered at the end of the UV/TiO2 process for OMW, whereas 58.3% COD(removal), 27.5% total phenols(removal), and 25.0% total suspended solids(removal) for MOMW. Also, before the UV/TiO2 reaction, a pH-T flocculation operation as pretreatment was realized. The overall efficiency of the treatment process for MOMW was up to 91% of COD(removal), in contrast with 33.2% of COD(removal) for OMW.
研究了两相连续离心过程中橄榄油厂废水的光催化降解。对一种具有铁磁性能的新型光催化剂进行了表征和研究。证明了光催化过程对橄榄油洗涤废水（OMW）以及橄榄与橄榄油混合物（1 v/v）洗涤废水（MOMW）的降解能力。在实验室规模下，MOMW和OMW的化学需氧量（COD）去除率和停留时间（τ）分别为58.4%（τ = 2 h）和21.4%（τ = 3 h）。另一方面，在中试规模下，OMW在紫外光/二氧化钛（UV/TiO₂）处理过程结束时，化学需氧量去除率为23.4%，总酚去除率为19.2%，总悬浮固体去除率为28.1%；而MOMW的相应去除率分别为58.3%、27.5%和25.0%。此外，在UV/TiO₂反应之前，进行了pH-T絮凝操作作为预处理。MOMW处理过程的总体效率高达化学需氧量去除率的91%，相比之下，OMW的化学需氧量去除率为33.2%。
