Olive oil milling, widely practiced in Mediterranean countries, including Palestine, yields the so-called olive mill waste water (OMWW) or Zebar (Zibar). The waste contains minerals and organic materials (including phenols and polyphenols) which undergo continuous oxidation and cause environmental hazards if not well managed. This work basically aims at purifying surface waters, intentionally pre-contaminated with OMWW organic contaminants. Fate of other mineral ions present in the contaminated water is also investigated. ZnO nanoparticles, deposited as films onto glass reactor bottom (165 cm² area), are described as catalyst for photodegradation of the organic contaminants, in a continuous flow reaction mode (gravity fed, typically at flow rate 3.5 mL/min). Two types of ZnO materials, namely commercial ZnO onto glass (C–ZnO/Glass) and synthetic ZnO supported onto clay and deposited on glass (Syn–ZnO/Clay/Glass), have been examined. The Syn–ZnO/Clay/Glass catalyst is slightly more efficient in removing organic contaminants (~ 43%), compared to the C–ZnO/Glass (41%) in 30 h. Different reaction parameters have been investigated, such as waste dilution factor, exposure duration, pH and catalyst recovery and reuse.

在包括巴勒斯坦在内的地中海国家中广泛使用的橄榄油研磨工艺会产生所谓的橄榄磨机废水（OMWW）或Zebar（Zibar）。废物中含有矿物质和有机材料（包括酚和多酚），如果管理不当，它们会不断氧化并造成环境危害。这项工作的主要目的是净化被OMWW有机污染物预先污染的地表水。还研究了污水中存在的其他矿物离子的去向。ZnO纳米颗粒，以薄膜形式沉积在玻璃反应器底部（165 cm ²区域）被描述为以连续流动反应模式（重力进料，通常以3.5 mL / min的流速进料）进行有机污染物光降解的催化剂。检验了两种类型的ZnO材料，即在玻璃上的商用ZnO（C–ZnO /玻璃）和负载在粘土上并沉积在玻璃上的合成ZnO（Syn–ZnO / Clay / Glass）。与C–ZnO /玻璃（41％）相比，Syn–ZnO /粘土/玻璃催化剂在30小时内的去除有机污染物的效率略高（〜43％）。已经研究了不同的反应参数，例如废物稀释因子，暴露时间，pH值以及催化剂的回收和再利用。