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首页> 外文期刊>Journal of Chemical Technology & Biotechnology >Biodegradation kinetics of a mixture of phenols in a sequencing batch moving bed biofilm reactor under starvation and shock loads
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Biodegradation kinetics of a mixture of phenols in a sequencing batch moving bed biofilm reactor under starvation and shock loads

机译：饥饿和冲击负荷下顺序分批移动床生物膜反应器中酚类混合物的生物降解动力学

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BACKGROUND: The objective of this research was to study the biodegradation kinetics of a mixture of phenol, 4-chorophenol 2,4-dichlorophenol and 2,4,6-trichlorophenol in a moving bed sequencing batch reactor (SBR) subjected to starvation and shock loads. The effect was evaluated on the degradation time and on the specific degradation rate. RESULTS: The bacteria present in the system degraded effectively the mixture of phenols. Degradation efficiencies were higher than 98% as total phenols and greater than 95% as organic carbon. It was observed that starvation and shock loads had only a transient effect on microorganisms degradation rate. The substrate removal rate decreased when the perturbations were applied, but for subsequent SBR cycles the previous activity was recovered. Results also demonstrated that suspended biomass was more sensitive to changes than the attached biomass present in the moving bed. CONCLUSIONS: The moving bed SBR presented robust performance under variable influent concentrations of a mixture of inhibitory compounds.
机译：背景：这项研究的目的是研究在饥饿和震动的移动床测序间歇反应器（SBR）中苯酚，4-氯苯酚2,4-二氯苯酚和2,4,6-三氯苯酚的混合物的生物降解动力学。负载。评价了降解时间和比降解率的影响。结果：系统中存在的细菌有效降解了酚的混合物。总酚的降解效率高于98％，有机碳的降解效率高于95％。观察到饥饿和冲击负荷仅对微生物的降解速率具有短暂影响。施加扰动后，底物去除率降低，但对于随后的SBR循环，恢复了先前的活性。结果还表明，悬浮生物质比移动床中存在的生物质对变化更敏感。结论：在可变进水浓度的抑制性化合物混合物中，移动床SBR表现出强大的性能。

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