Institut national de la recherche scientifique (INRS-Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, Québec, Qc, Canada G1K 9A9.
Environ Pollut. 2013 Sep;180:229-35. doi: 10.1016/j.envpol.2013.05.028. Epub 2013 Jun 19.
A submerged membrane bioreactor has been operated at the laboratory scale for the treatment of a synthetic effluent containing Bisphenol-A (BPA). COD, NH4-N, PO4-P and BPA were eliminated respectively, at 99%, 99%, 61% and 99%. The increase of volumetric loading rate from 0 to 21.6 g/m(3)/d did not affect the performance of the MBR system. However, the removal rate decreased rapidly when the BPA loading rate increased above 21.6 g/m(3)/d. The adsorption process of BPA on the biomass was very well described by Freundlich and Langmuir isotherms. Subsequently, biodegradation of BPA occurred and followed the first order kinetic reaction, with a constant rate of 1.13 ± 0.22 h(-1). During treatment, membrane fouling was reversible in the first 84 h of filtration, and then became irreversible. The membrane fouling was mainly due to the accumulation of suspended solid and development of biofilm on the membrane surface.
一个浸没式膜生物反应器在实验室规模下运行，用于处理含有双酚 A (BPA) 的合成废水。COD、NH4-N、PO4-P 和 BPA 的去除率分别达到 99%、99%、61%和 99%。体积负荷率从 0 增加到 21.6 g/m(3)/d 不会影响 MBR 系统的性能。然而，当 BPA 负荷率增加到 21.6 g/m(3)/d 以上时，去除率迅速下降。BPA 在生物量上的吸附过程可以很好地用 Freundlich 和 Langmuir 等温线来描述。随后，BPA 发生生物降解，遵循一级动力学反应，速率常数为 1.13 ± 0.22 h(-1)。在处理过程中，过滤前 84 h 内膜污染是可逆的，然后变为不可逆。膜污染主要是由于悬浮固体的积累和生物膜在膜表面的发展。
