GENOCOV Research Group, Department of Chemical, Biological and Environmental Engineering, School of Engineering, Universitat Autònoma de Barcelona, Edifici Q, 08193 Bellaterra, Barcelona, Spain.
GENOCOV Research Group, Department of Chemical, Biological and Environmental Engineering, School of Engineering, Universitat Autònoma de Barcelona, Edifici Q, 08193 Bellaterra, Barcelona, Spain.
J Hazard Mater. 2016 Feb 13;303:154-61. doi: 10.1016/j.jhazmat.2015.10.031. Epub 2015 Oct 17.
Continuous feeding operation of an airlift reactor and its inoculation with mature aerobic granules allowed the successful treatment of a mixture of aromatic compounds (p-nitrophenol, o-cresol and phenol). Complete biodegradation of p-nitrophenol, o-cresol, phenol and their metabolic intermediates was achieved at an organic loading rate of 0.61 g COD L(-1)d(-1). Stable granulation was obtained throughout the long-term operation (400 days) achieving an average granule size of 2.0 ± 1 mm and a sludge volumetric index of 26 ± 1 mL g(-1) TSS. The identified genera in the aerobic granular biomass were heterotrophic bacteria able to consume aromatic compounds. Therefore, the continuous feeding regimen and the exposure of aerobic granules to a mixture of aromatic compounds make possible to obtain good granulation and high removal efficiency.
采用气升式反应器连续进料运行并接种成熟好氧颗粒污泥，成功处理了芳香族化合物（对硝基苯酚、邻甲酚和苯酚）的混合物。在有机负荷率为 0.61 g COD L(-1)d(-1)的条件下，实现了对硝基苯酚、邻甲酚、苯酚及其代谢中间产物的完全生物降解。在长期运行（400 天）过程中实现了稳定的颗粒化，获得的平均颗粒粒径为 2.0 ± 1 mm，污泥容积指数为 26 ± 1 mL g(-1) TSS。好氧颗粒污泥生物量中鉴定出的属是能够消耗芳香族化合物的异养菌。因此，连续进料方案和使好氧颗粒污泥暴露于芳香族化合物混合物中，使得获得良好的颗粒化和高去除效率成为可能。
