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Advanced wastewater treatment and membrane fouling control by electro-encapsulated self-forming dynamic membrane bioreactor
npj Clean Water ( IF 10.4 ) Pub Date : 2022-08-25 , DOI: 10.1038/s41545-022-00184-z
Jessa Marie J. Millanar-Marfa , Mary Vermi Aizza Corpuz , Laura Borea , Carlo Cabreros , Mark Daniel G. De Luna , Florencio Ballesteros , Giovanni Vigliotta , Tiziano Zarra , Shadi W. Hasan , Gregory V. Korshin , Antonio Buonerba , Vincenzo Belgiorno , Vincenzo Naddeo

An advanced concept of aerobic membrane bioreactors (MBRs) for highly efficient wastewater treatment has been disclosed by introduction of an electro and encapsulated self-forming dynamic biomembrane (e-ESFDM). The biological filtering membrane is intercalated between two woven polyester fabrics as supports that assist the formation and protect the biomembrane. The innovative architecture of the e-ESFDM in combination with electrocoagulation processes resulted in efficient and cost-effective wastewater treatment and control of the membrane fouling. The performance of the e-ESFDMBR was compared to a yet highly efficient ESFDMBR, where the electric field was not present. The ESFDM-based reactors both showed comparable results in the removal of organic matter, in terms of COD and DOC. On the other hand, e-ESFDMBR exceeded the performance of the ESFDMBR in the reduction of nitrogen- and phosphorous-containing pollutants, responsible for eutrophication processes in the environment, and recalcitrant molecules, such as humic-like substances. In addition, an extremely low fouling rate was observed for the e-ESFDM bioreactor. Insights on the biological processes involved in the developed MBR were provided by investigations on the microbiological diversity found in reactor mixed liquor, ESFDM layer and treated wastewater.



中文翻译:

电封装自形成动态膜生物反应器的先进废水处理和膜污染控制

用于高效废水处理的好氧膜生物反应器 (MBR) 的先进概念已通过引入电和封装的自形成动态生物膜 (e-ESFDM) 进行了披露。生物过滤膜插在两层涤纶织物之间作为支撑物,有助于生物膜的形成和保护。e-ESFDM 的创新架构与电凝聚工艺相结合,实现了高效且具有成本效益的废水处理和膜污染控制。将 e-ESFDMBR 的性能与不存在电场的高效 ESFDMBR 进行了比较。就 COD 和 DOC 而言,基于 ESFDM 的反应器在去除有机物方面均显示出相当的结果。另一方面,e-ESFDMBR 在减少含氮和磷污染物(导致环境中的富营养化过程)和顽固分子(如腐殖质类物质)方面的性能超过了 ESFDMBR。此外,观察到 e-ESFDM 生物反应器的结垢率极低。通过对反应器混合液、ESFDM 层和处理过的废水中发现的微生物多样性的调查,提供了对开发的 MBR 中涉及的生物过程的见解。

更新日期:2022-08-25
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