Bernet N, Delgenès N, Delgenès J P, Moletta R
INRA, Laboratoire de Biotechnologie de l'Environnement (LBE), Avenue des Etangs, 11100 Narbonne, France.
Water Sci Technol. 2001;43(3):209-14.
Two laboratory-scale sequencing batch reactors were used to study biological treatment of carbon and nitrogen in a new combined anaerobic-aerobic system. Piggery wastewater was used as a model effluent. The anaerobic reactor, fed with raw wastewater and nitrite/nitrate recycling from the aerobic reactor, carried out denitrification and anaerobic digestion of organic carbon. In the aerobic reactor, organic carbon removal and nitrification of ammonia to mainly nitrite occurred. Three recycle-to-influent ratios from 1 to 3 were tested. The higher the recycle-to-influent ratio, the lower the concentrations of nitrogen oxides in the final effluent. Carbon removal efficiency was quite stable, whatever the ratio. However, the effect of this ratio was attenuated because of denitrification in the aerobic reactor, which increased the performances of the process. The use of sequencing batch reactors was essential to apply the configuration proposed, in order to combine denitrification and methanogenesis that require antagonistic conditions.
使用两个实验室规模的序批式反应器，在一个新的厌氧-好氧联合系统中研究碳和氮的生物处理。采用猪场废水作为模拟废水。厌氧反应器接收原废水以及来自好氧反应器的亚硝酸盐/硝酸盐循环液，进行反硝化和有机碳的厌氧消化。在好氧反应器中，发生有机碳的去除以及氨主要氧化为亚硝酸盐的硝化反应。测试了1至3的三个循环比与进水比。循环比与进水比越高，最终出水的氮氧化物浓度越低。无论该比例如何，碳去除效率都相当稳定。然而，由于好氧反应器中的反硝化作用，该比例的影响被减弱，这提高了该工艺的性能。为了将需要相反条件的反硝化和产甲烷作用结合起来，使用序批式反应器对于应用所提出的配置至关重要。
