Department of Municipal Engineering, School of Civil Engineering, Guangzhou University, Guangzhou 510006, China; Water Desalination and Reuse Center, Division of Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.
Water Desalination and Reuse Center, Division of Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.
Bioresour Technol. 2018 Nov;268:648-657. doi: 10.1016/j.biortech.2018.08.073. Epub 2018 Aug 19.
The removal of 26 organic micropollutants (OMPs) in synthetic municipal wastewater was investigated via the process of aerobic sequential batch reactor (SBR) alone and SBR followed by nanofiltration (NF). SBR-NF performed better than SBR alone, ascribed to the contribution of NF: 1) complete biomass rejection resulted in diverse microbial community and much less fluctuated performance than SBR alone, and 2) direct OMPs rejection (74-98%) increased their retention time in SBR and thus overall removal via biodegradation/transformation and accumulation in SBR. Nine OMPs showed high biological removal (over 60%), 6 OMPs showed moderate biological removal (30-70%) and 10 OMPs showed low biological removal (below 40%). Most readily and moderately biodegradable OMPs contained strong electron donating group. Most refractory OMPs contained strong electron withdrawing group and/or halogen substitute. The batch addition of powdered activated carbon (100 mg/L) into SBR showed short term sorption performance for both OMPs and bulk organics.
采用好氧序批式反应器（SBR）和 SBR 后纳滤（NF）工艺去除合成城市废水中的 26 种有机微量污染物（OMPs）。SBR-NF 的性能优于单独的 SBR，这归因于 NF 的贡献：1）完全的生物截留导致微生物群落的多样性和比单独的 SBR 更小的波动性能，和 2）直接的 OMPs 截留（74-98%）增加了它们在 SBR 中的停留时间，从而通过生物降解/转化和在 SBR 中的积累来提高整体去除率。9 种 OMPs 表现出高生物去除率（超过 60%），6 种 OMPs 表现出中等生物去除率（30-70%），10 种 OMPs 表现出低生物去除率（低于 40%）。大多数易生物降解和中等生物降解的 OMPs 含有强供电子基团。大多数难生物降解的 OMPs 含有强吸电子基团和/或卤素取代基。将粉末活性炭（100mg/L）分批加入 SBR 中，对 OMPs 和大量有机物均表现出短期吸附性能。
