Comparative performance of a UASB reactor and an anaerobic packed-bed reactor when treating potato waste leachate
Comparative performance of a UASB reactor and an anaerobic packed-bed reactor when treating potato waste leachate
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DOI：
10.1016/j.renene.2005.05.013
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发表时间：
2006-05
期刊：
影响因子：
8.7
通讯作者：
W. Parawira;M. Murto;R. Zvauya;B. Mattiasson
中科院分区：
文献类型：
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作者：
W. Parawira;M. Murto;R. Zvauya;B. Mattiasson
本文提出的结果来自对实验室规模的上流式厌氧污泥床 (UASB) 反应器和厌氧填充床 (APB) 反应器的研究，这些反应器以有机负荷率从 1.5 至 7.0gCOD/1/天处理马铃薯渗滤液。在 100 天的实验期间，两个反应器的水力停留时间范围为 13.2 至 2.8 天。实验室规模的 UASB 和 APB 反应器稳定运行时可能的最大有机负荷率分别约为 6.1 和 4.7gCOD/lday。基于出水总COD，两个反应器的COD去除效率均大于90%。甲烷产量随着有机负荷率的增加而增加，在UASB反应器中达到0.23lCH4/gCOD降解，在APB反应器中达到0.161CH4/gCOD降解。 UASB 可以在比 APB 反应器更高的有机负载率下运行，并实现更高的甲烷产率。反应器不稳定的迹象是部分碱度和 pH 值降低以及挥发性脂肪酸含量增加。该研究证明了 UASB 和填充床反应器适用于处理马铃薯废物渗滤液。
The results presented in this paper are from studies on a laboratory-scale upflow anaerobic sludge blanket (UASB) reactor and an anaerobic packed-bed (APB) reactor treating potato leachate at increasing organic loading rates from 1.5 to 7.0gCOD/1/day. The hydraulic retention times ranged from 13.2 to 2.8 days for both reactors during the 100 days of the experiment. The maximum organic loading rates possible in the laboratory-scale UASB and APB reactors for stable operation were approximately 6.1 and 4.7gCOD/lday, respectively. The COD removal efficiencies of both reactors were greater than 90% based on the total COD of the effluent. The methane yield increased with increasing organic loading rate up to 0.23lCH4/gCODdegradedin the UASB reactor and 0.161CH4/gCODdegradedin the APB reactor. The UASB could be run at a higher organic loading rate than the APB reactor and achieved a higher methane yield. Signs of reactor instability were decreasing partial alkalinity and pH and increasing amounts of volatile fatty acids. The study demonstrated the suitability of the UASB and a packed-bed reactor for treating leachate from potato waste.