Effects of changes in temperature on treatment performance and energy recovery at mainstream anaerobic ceramic membrane bioreactor for food waste recycling wastewater treatment

Kyungjin Cho, Yeongmi Jeong, Kyu Won Seo, Seockheon Lee, Adam L. Smith, Seung Gu Shin, Si Kyung Cho, Chanhyuk Park

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

An anaerobic ceramic membrane bioreactor (AnCMBR) has been attracted as an alternative technology to co-manage various organic substrates. This AnCMBR study investigated process performance and microbial community structure at decreasing temperatures to evaluate the potential of AnCMBR treatment for co-managing domestic wastewater (DWW) and food waste-recycling wastewater (FRW). As a result, the water flux (≥6.9 LMH) and organic removal efficiency (≥98.0%) were maintained above 25 °C. The trend of methane production in the AnCMBR was similar except for at 15 °C. At 15 °C, the archaeal community structure did not shifted, whereas the bacterial community structure was changed. Various major archaeal species were identified as the mesophilic methanogens which unable to grow at 15 °C. Our results suggest that the AnCMBR can be applied to co-manage DWW and FRW above 20 °C. Future improvements including psychrophilic methanogen inoculation and process optimization would make co-manage DWW and FRW at lower temperature climates.

Original languageEnglish
Pages (from-to)137-144
Number of pages8
JournalBioresource Technology
Volume256
DOIs
StatePublished - May 2018

Keywords

  • Anaerobic ceramic membrane bioreactor
  • Domestic wastewater
  • Food waste recycling wastewater
  • Microbial community structure
  • Psychrophilic

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