Ozonation is recognized as an effective treatment to eliminate complex contaminants in wastewater. So far, past studies often applied ozonation for minutes or a few hours. These studies contradict each other in their findings about the ability of ozone to remove inorganics and organics. The present study, for the first time, applied ozone oxidation at doses of 15 and 30 mg/L for a long duration of 144 h to process high-strength wastewater, palm oil mill effluent. Both doses effectively dissolved non-biodegradable solids, ultimately enhancing toxicity removal. However, the 15 mg/L dose resulted in a slower start-up, instability in treatment, and lower solid degradation than the 30 mg/L dose because it was inadequate to abate influent pollutants. The undesirable results of the 15 mg/L dose demonstrated the need for a higher dosage of ozone to result in a higher rate of conversion of solids into biodegradable and dissolved solids over a shorter period of time. The high ozone dose (30 mg/L) demonstrated better startup, more stable performance, and higher final effluent quality than the low ozone dose (15 mg/L). The high ozone dose continued to deliver high-performance treatment over the duration of the study compared to the low ozone dose. During ozonation, particulate matter foams were detected on the surface due to aggregation of solids.

臭氧处理被认为是消除废水中复杂污染物的有效方法。到目前为止，过去的研究通常将臭氧化应用数分钟或数小时。这些研究在发现臭氧去除无机物和有机物的能力方面相互矛盾。本研究首次将臭氧氧化以15和30 mg / L的剂量长时间使用144 h，以处理棕榈油厂废水等高强度废水。两种剂量均有效溶解了不可生物降解的固体，最终增强了毒性的去除。但是，与30 mg / L剂量相比，15 mg / L剂量的启动速度慢，治疗不稳定且固体降解率较低，因为它不足以减少进水污染物。15 mg / L剂量的不良结果表明需要更高剂量的臭氧，以在较短的时间内使固体转化为可生物降解和溶解的固体的速率更高。与低臭氧剂量（15 mg / L）相比，高臭氧剂量（30 mg / L）显示出更好的启动，更稳定的性能和更高的最终出水质量。与低臭氧剂量相比，高臭氧剂量在研究期间继续提供高性能治疗。在臭氧化过程中，由于固体聚集而在表面上检测到颗粒物质泡沫。与较低的臭氧剂量（15 mg / L）相比，最终出水水质更高。与低臭氧剂量相比，高臭氧剂量在研究期间继续提供高性能治疗。在臭氧化过程中，由于固体聚集而在表面上检测到颗粒物质泡沫。与较低的臭氧剂量（15 mg / L）相比，最终出水水质更高。与低臭氧剂量相比，高臭氧剂量在研究期间继续提供高性能治疗。在臭氧化过程中，由于固体聚集而在表面上检测到颗粒物质泡沫。