Combined anaerobic digestion (AD) and photodegradation of slaughterhouse wastewater (SWW) was carried out to remove biodegradable chemical oxygen demand (COD) and biorecalcitrant aromatic compounds which were mainly p-cresol and dibutyl phthalate (DBP). The synergy between the two processes was analyzed through biodegradability enhancement by photodegradation and supply of bioenergy through AD to supplement the energy requirement of the photodegradation process. Degradation products of each process were determined using gas chromatography coupled with a mass spectrometer (GC–MS). Anaerobic digestion as a stand-alone process removed up to 80% COD, while it could only remove about 35% of the aromatic compounds. Photodegradation, as a post-treatment to the AD, removed 92% of the aromatic compounds and enhanced the biodegradability of the digester effluent by 50%, which could be recycled to the AD unit. The aromatic compounds were photodegraded via phthalic acid and hydroquinone. Also, AD as an initial step removed fats, oils, and grease which otherwise would have hindered catalytic activity during photodegradation post-treatment. The biomethane produced could supplement up to 20% of the electricity requirement by the energy-intensive photodegradation process to achieve total pollutants removal, making the integrated process to be a viable option for SWW management.

结合厌氧消化（AD）和屠宰场废水的光降解（SWW）去除生物可降解的化学需氧量（COD）和生物难降解的芳族化合物，主要是对甲酚和邻苯二甲酸二丁酯（DBP）。通过光降解可生物降解性增强分析了这两个过程之间的协同作用，并通过AD补充了生物能量来补充光降解过程的能量需求。使用气相色谱仪结合质谱仪（GC-MS）确定每个过程的降解产物。作为一个独立的过程，厌氧消化可去除高达80％的COD，而它只能去除约35％的芳族化合物。光降解，作为AD的后处理，去除了92％的芳族化合物，消化池废水的生物降解能力提高了50％，可将其再循环到AD装置中。芳族化合物经邻苯二甲酸和对苯二酚光降解。同样，AD作为第一步去除了油脂，油脂和油脂，否则这些油脂会在光降解后处理过程中阻碍催化活性。所产生的生物甲烷可以通过高能耗的光降解过程补充高达20％的电力需求，以实现污染物的完全去除，从而使集成过程成为SWW管理的可行选择。以及否则会在光降解后处理过程中阻碍催化活性的油脂。产生的生物甲烷可以通过高能耗的光降解工艺补充多达20％的电力需求，以实现污染物的完全去除，从而使集成工艺成为SWW管理的可行选择。以及否则会在光降解后处理过程中阻碍催化活性的油脂。产生的生物甲烷可以通过高能耗的光降解工艺补充多达20％的电力需求，以实现污染物的完全去除，从而使集成工艺成为SWW管理的可行选择。