In this paper, advanced oxidation process (AOP) combining ultrasound (US) and Fenton’s process was proposed for the treatment of total petroleum hydrocarbons present in oil spill sludge. The effect of several parameters like pH, ultrasonic power, weight ratio of hydrogen peroxide to iron [H₂O₂/Fe²⁺], Fenton reagent dosage, addition of salts and contact time were analyzed for the reduction of Petroleum Hydrocarbons (PHCs) in terms of hydrocarbon fractions (nC7–C10, nC11-C20). Chemical characterization of oil spill sludge was analysed by gas chromatography- mass spectrum (GC–MS) Elemental analyser, Fourier Transform Infra Red (FT-IR) Analyser and particle size analyser. Experiments were conducted for identifying the wide range of hydrocarbons fractions (nC7–C10, nC11–C20 and nC21–C30). Results shown that maximum solubilisation and PHC removal rate of up to 84.25% could be achieved at a pH of 3.0, sludge/water ratio of 1:100, ultrasonic power of 100 W with 40–50% ultrasonic amplitude, a H₂O₂/Fe²⁺ weight ratio of 10:1, and an ultrasonic treatment time of 10 min. The lower and medium fractions (nC7–C10, nC11–C20) were amenable to degradation due to ultrasound treatment compared to the heavier carbon fraction (nC21–C30). The study concludes that the combined sono-Fenton (SF) process significantly enhanced the degradation of oil spill sludge as compared to ultrasound treatment and Fenton oxidation alone. The enhanced solubilisation achieved by US alone is highly beneficial when we couple this with biodegradation which will be greatly facilitated by the enhanced solubility.

本文提出了一种结合超声波（US）和芬顿工艺的先进氧化工艺（AOP），用于处理溢油污泥中的总石油烃。pH，超声功率，过氧化氢与铁的重量比[H ₂ O ₂ / Fe ²⁺]，分析了Fenton试剂的用量，盐的添加量和接触时间，以减少烃类馏分（nC7–C10，nC11–C20）中的石油烃（PHC）。通过气相色谱-质谱（GC-MS）元素分析仪，傅立叶变换红外（FT-IR）分析仪和粒度分析仪对溢油污泥的化学特性进行了分析。进行了实验以鉴定各种碳氢化合物馏分（nC7–C10，nC11–C20和nC21–C30）。结果表明，在pH为3.0，污泥/水比为1：100，超声功率为100 W，超声振幅为40–50％，H ₂ O _{2的条件下}，最大溶解度和PHC去除率可达到84.25％。/铁²⁺重量比为10：1，超声处理时间为10分钟。与较高碳分数（nC21-C30）相比，较低和中等分数（nC7-C10，nC11-C20）由于超声处理而易于降解。该研究得出的结论是，与单独的超声处理和芬顿氧化相比，声纳-芬顿（SF）组合工艺显着增强了溢油污泥的降解。当我们将其与生物降解结合使用时，仅通过美国即可实现的增溶作用是非常有益的，而溶解度的提高将大大促进生物降解。