Organic micropollutants removal in sequential batch reactor followed by nanofiltration from municipal wastewater treatment

Chunhai Wei, Nan Wang, Christiane Hoppe-Jones, TorOve Leiknes, Gary L. Amy, Qian Fang, Xiaodong Hu, Hongwei Rong

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

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.
Original languageEnglish (US)
Pages (from-to)648-657
Number of pages10
JournalBioresource Technology
Volume268
DOIs
StatePublished - Aug 19 2018

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