The aim of this study was to assess the effect of light, oxygen and microalgae on micropollutants removal. The studied micropollutants were 4-(1,1,3,3-tetramethylbutyl)phenol (OP), technical-nonylphenol (t-NP), 4-n-nonylphenol (4-NP), Bisphenol-A (BPA). In order to study the effect of the three variables on the micropollutants removal, a factorial design was developed. The experiments were carried out in four batch reactors which treated the effluent of an anaerobic membrane bioreactor. The gas chromatography mass spectrometry was used for the measurement of the micropollutants. The results showed that light, oxygen and microalgae affected differently to the degradation ratios of each micropollutant. The results showed that under aerated conditions removal ratios higher than 91% were achieved, whereas for non-aerated conditions the removal ratios were between 50% and 80%, except for 4-NP which achieved removal ratios close to 100%. Besides, mass balance showed that the degradation processes were more important than the sorption processes.

译文

:这项研究的目的是评估光,氧气和微藻类对微污染物去除的影响。研究的微量污染物为4-(1,1,3,3-四甲基丁基)苯酚(OP),工业壬基苯酚(t-NP),4-正壬基苯酚(4-NP),双酚A(BPA)。为了研究这三个变量对微污染物去除的影响,开发了析因设计。实验在四个分批反应器中进行,该反应器处理厌氧膜生物反应器的流出物。气相色谱质谱法用于微量污染物的测量。结果表明,光,氧和微藻对每种微污染物的降解率的影响不同。结果表明,在充气条件下,去除率高于91%,而在非充气条件下,去除率在50%至80%之间,除了4-NP去除率接近100%。此外,质量平衡表明降解过程比吸附过程更为重要。

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