Department of Engineering, Federal University of Lavras, Campus Universitário, CP 3037, CEP 37200-000, Lavras, MG, Brazil.
J Environ Manage. 2012 Oct 15;108:14-21. doi: 10.1016/j.jenvman.2012.04.033. Epub 2012 May 18.
An evaluation was performed of three upflow anaerobic fixed bed reactors for the treatment of wastewater from coffee bean processing (WCP). The supports used were: blast furnace cinders, polyurethane foam and crushed stone with porosities of 53, 95 and 48%, respectively. The testing of these 139.5 L reactors consisted of increasing the COD of the influent (978; 2401 and 4545 mg L(-1)), while maintaining the retention time of 1.3 days. For the maximum COD applied, the reactor filled with foam presented removals of 80% (non-filtered samples) and 83% (filtered samples). The greater performance of the reactor filled with foam is attributed to its porosity, which promoted greater collection of biomass. From the results, it could be concluded that the reactors presented satisfactory performance, especially when using the foam as a support. Furthermore, the modified Stover-Kincannon and second order for multicomponent substrate degradation models were successfully used to develop a model of the experimental data.
对三个上流式厌氧固定床反应器处理咖啡豆加工废水（WCP）的效果进行了评估。使用的载体分别为：高炉矿渣、聚氨酯泡沫和碎石头，其孔隙率分别为 53%、95%和 48%。这些 139.5 L 反应器的测试包括增加进水的 COD（978、2401 和 4545 mg/L），同时保持停留时间为 1.3 天。对于应用的最大 COD，填充泡沫的反应器的去除率为 80%（未过滤样品）和 83%（过滤样品）。填充泡沫的反应器表现出更好的性能归因于其孔隙率，这促进了更多生物量的收集。从结果可以得出结论，这些反应器的性能令人满意，特别是当使用泡沫作为载体时。此外，经修正的 Stover-Kincannon 和用于多组分底物降解的二阶模型成功地用于开发实验数据模型。
