The Federal University of Technology - Paraná (UTFPR), Environmental Sciences and Technology Graduate Program, Curitiba, Brazil.
The Federal University of Technology - Paraná (UTFPR), Civil Engineering Graduate Program, Curitiba, Brazil.
Environ Technol. 2023 Jul-Aug;44(19):2955-2968. doi: 10.1080/09593330.2022.2048087. Epub 2022 Mar 13.
The upflow anaerobic hybrid (UAHB) reactor combines the advantages of a upflow anaerobic sludge blanket (UASB-type) reactor and an anaerobic filter in a single compartment. A novel configuration of the UAHB reactor, composed of two three-phase separators (3PHS), was proposed to evaluate the biogas production in the moving and fixed bed in the treatment of synthetic sewage at a temperature range of 14-21 °C and hydraulic retention time (HRT) of 12, 10 and 8 h. The bench-scale reactor was operated in three different phases with organic loading rate (VOLR) of 0.6 (0.3-0.7), 0.7 ± 0.2, and 1.1 ± 0.1 kg COD m d, respectively, for 225 days. The average removal efficiency of chemical oxygen demand (COD) was 78 (42-89)%, and the total biogas yield was 3090 (1704-4782) mL d, with 66% of the lower 3PHS (moving bed) and 34% of the upper 3PHS (fixed bed). However, no significant difference was observed between the biogas yield on the 3PHS (-value = 0.5048), thus confirming the influence of temperature in the biogas production. The average percentage of methane was 76 (60-82)% for both beds, and the filter media increased the production by 21%. Thus, it can be concluded that the fixed bed suppressed the instability of the moving bed regarding the biogas production and contributed to the final quality of the effluent.
上流式厌氧混合（UAHB）反应器结合了上流式厌氧污泥床（UASB 型）反应器和厌氧滤池的优点于一体。提出了一种新型的 UAHB 反应器结构，由两个三相分离器（3PHS）组成，用于评估在 14-21℃温度范围内和水力停留时间（HRT）为 12、10 和 8 h 的条件下，处理合成污水时移动床和固定床中的沼气产量。该中试规模的反应器在三个不同阶段运行，有机负荷率（VOLR）分别为 0.6（0.3-0.7）、0.7±0.2 和 1.1±0.1 kg COD m d，持续 225 天。化学需氧量（COD）的平均去除效率为 78%（42-89）%，总沼气产量为 3090（1704-4782）mL d，其中下部 3PHS（移动床）占 66%，上部 3PHS（固定床）占 34%。然而，3PHS 的沼气产量之间没有显著差异（-值=0.5048），这证实了温度对沼气产量的影响。两个床的甲烷平均百分比均为 76%（60-82）%，过滤介质使产量增加了 21%。因此，可以得出结论，固定床抑制了移动床在沼气生产方面的不稳定性，并有助于出水的最终质量。
