Abstract The combination of advanced oxidation processes (AOPs) and electrochemical process is gaining growing popularity for use in wastewater treatment. The present work explores for the first time, treatment of leachate wastewater from landfill waste using a combination of sonication (US), ozonation (O3) and electrocoagulation (EC) process expressed by % color removal, % Chemical Oxygen Demand (COD) removal and its associated electrical energy consumption. The results revealed that, the combined process (US/O3/EC) is highly successful in the treatment of leachate wastewater from landfill in terms of % color removal (100 %) and % COD removal (97.50 %) with low electrical energy consumption (8kWhr/m3) than the other hybrid and single process such as O3/EC, US/EC, US/O3 and EC, O3, US. The influence of different process parameters such as electrolyte concentration (1.50–7.50 g/L), current density (1.25–7.50 A/dm2), initial effluent pH (2–11), COD concentration (2000–6000 ppm), O3 production (0.75–3.75 g/hr) and sonication power (20–100 Watts) were studied on the efficiency of pollutant removal evaluated by reduction of % color and % COD and electrical energy consumption using hybrid US/O3/EC process. Overall, the analysis clearly showed that the approaches to integrated treatment technologies could synergistically remove the pollutant from the wastewater.

中文翻译：

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使用声波（US）-臭氧（O3）-电凝（EC）工艺强化垃圾渗滤液废水处理：工艺参数对颜色、COD 和电能消耗的影响

摘要 高级氧化工艺 (AOP) 和电化学工艺的结合在废水处理中越来越受欢迎。目前的工作首次探索了使用超声处理 (US)、臭氧化 (O3) 和电凝聚 (EC) 工艺的组合处理垃圾填埋场垃圾渗滤液废水，表示为去除颜色百分比、去除化学需氧量 (COD) 百分比和其相关的电能消耗。结果表明，联合工艺（US/O3/EC）在处理垃圾渗滤液废水时在脱色率（100%）和COD去除率（97.50%）方面非常成功，且电能消耗低（ 8kWhr/m3) 比其他混合和单一工艺，如 O3/EC、US/EC、US/O3 和 EC、O3、US。不同工艺参数的影响，例如电解液浓度 (1.50–7.50 g/L)、电流密度 (1.25–7.50 A/dm2)、初始流出物 pH (2–11)、COD 浓度 (2000–6000 ppm)、O3 产量(0.75–3.75 克/小时) 和超声处理功率 (20–100 瓦) 通过使用混合 US/O3/EC 工艺通过减少颜色百分比和 COD 百分比和电能消耗来评估污染物去除效率。总体而言，分析清楚地表明，综合处理技术的方法可以协同去除废水中的污染物。75 克/小时）和超声处理功率（20-100 瓦）通过使用混合 US/O3/EC 工艺通过减少颜色百分比和 COD 百分比和电能消耗来评估污染物去除效率。总体而言，分析清楚地表明，综合处理技术的方法可以协同去除废水中的污染物。75 克/小时）和超声处理功率（20-100 瓦）通过使用混合 US/O3/EC 工艺通过减少颜色百分比和 COD 百分比和电能消耗来评估污染物去除效率。总体而言，分析清楚地表明，综合处理技术的方法可以协同去除废水中的污染物。