Effects of changes in temperature on treatment performance and energy recovery at mainstream anaerobic ceramic membrane bioreactor for food waste recycling wastewater treatment. (May 2018)

• Record Type: Journal Article
• Authors: Cho, Kyungjin; Jeong, Yeongmi; Seo, Kyu Won; Lee, Seockheon; Smith, Adam L.; Shin, Seung Gu; Cho, Si-Kyung; Park, Chanhyuk
• Is Part Of: Bioresource technology. Volume 256(2018)
• Page Start: 137
• Page End: 144
• Publication Date: 2018-05
• Subjects: Anaerobic ceramic membrane bioreactor -- Domestic wastewater -- Food waste recycling wastewater -- Psychrophilic -- Microbial community structure; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2018.02.015
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Low-temperature anaerobic ceramic membrane bioreactor was evaluated. AnCMBR for treating a dilute FRW and domestic wastewater mixture. AnCMBR was successfully applied at ambient temperature for co-managing DWW and FRW. Microbial community structure was shifted by the temperature changes. Methanogenic activity was inhibited at 15 °C in AnCMBR treatment. 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.