National petrochemical company Tehran, Iran.
Water Sci Technol. 2012;65(12):2098-105. doi: 10.2166/wst.2012.088.
An anaerobic hybrid reactor (UASB/Filter) was used for petrochemical wastewater treatment in mesophilic conditions. The seeded flocculent sludge from a UASB plant treating dairy wastewater, acclimatized to the petrochemical wastes in a two-stage operation. After start up, under steady-state conditions, experiments were conducted at OLRs of between 0.5 and 24 kg TCOD m(-3) d(-1), hydraulic retention times (HRT) of 4-48 h and up-flow velocities 0.021-0.25 mh(-1). Removal efficiencies in the range of 42-86% were achieved at feed TCOD concentrations of 1,000-4,000 mg L(-1). The results of reactor performance at different operational conditions and its relations are presented and discussed in this paper. Then, the obtained data are used for determination of kinetic models. The results showed that a second-order model and a modified Stover-Kincannon model were the most appropriate models for this reactor. Finally, the biogas production data were used for the determination of biogas production kinetics.
采用厌氧混合反应器（UASB/Filter）在中温条件下处理石化废水。接种了来自处理乳制品废水的 UASB 工厂的絮状污泥，在两段式操作中适应石化废水。启动后，在稳态条件下，在 OLR 为 0.5 至 24 kg TCOD m(-3) d(-1)、水力停留时间 (HRT) 为 4-48 h 和上流速度为 0.021-0.25 mh(-1)的条件下进行了实验。在进料 TCOD 浓度为 1,000-4,000 mg L(-1)时，可实现 42-86%的去除效率。本文介绍并讨论了不同操作条件下反应器性能及其关系的结果。然后，使用获得的数据来确定动力学模型。结果表明，二级模型和改进的 Stover-Kincannon 模型是该反应器最适用的模型。最后，使用沼气产生数据来确定沼气产生动力学。
