Abstract

Membrane bioreactors are powerful systems for wastewater treatment and the removal of toxic compounds. However, membrane biofouling stands in the way of their widespread usage. In this study, the saprophytic fungus Trichocladium canadense was used as the bioaugmentor in an anaerobic membrane bioreactor (AnMBR) and its impact on membrane biofouling, biogas production, the microbial communities of the reactor and removal of the common antibiotics erythromycin (ERY), sulfamethoxazole (SMX) and tetracycline (TET) from synthetic wastewater was investigated. The results indicated that through bioaugmentation with 20% T. canadense, membrane biofouling was slowed by 25%, the chemical oxygen demand removal increased by 16% and a higher efficiency removal of ERY and SMX was achieved. The presence of T. canadense significantly increased the abundance and diversity of the biofilm archaeal community and the bacterial phylum Firmicutes, a known bio-foulant.

摘要

膜生物反应器是用于废水处理和去除有毒化合物的强大系统。然而，膜生物污染阻碍了它们的广泛使用。在这项研究中，腐生真菌Trichocladium canadense用作厌氧膜生物反应器 (AnMBR) 中的生物增强剂及其对膜生物污染、沼气生产、反应器微生物群落和去除常见抗生素红霉素 (ERY)、磺胺甲恶唑的影响研究了合成废水中的 (SMX) 和四环素 (TET)。结果表明，通过使用 20% T. canadense进行生物强化，膜生物污染速度降低了 25%，化学需氧量去除率提高了 16%，并且实现了更高的 ERY 和 SMX 去除效率。T. canadense的存在显着增加了生物膜古细菌群落和厚壁菌门（一种已知的生物污染物）的丰度和多样性。