Development of UASB-DHS System for Treating Industrial Wastewater Containing Ethylene Glycol

Takahiro WATARI; Daisuke TANIKAWA; Kyohei KURODA; Akinobu NAKAMURA; Nanako FUJII; Fuminori YONEYAMA; Osamu WAKISAKA; Masashi HATAMOTO; Takashi YAMAGUCHI

doi:10.2965/jwet.2015.131

Original Papers

Development of UASB-DHS System for Treating Industrial Wastewater Containing Ethylene Glycol

Takahiro WATARI, Daisuke TANIKAWA, Kyohei KURODA, Akinobu NAKAMURA, Nanako FUJII, Fuminori YONEYAMA, Osamu WAKISAKA, Masashi HATAMOTO, Takashi YAMAGUCHI

Author information

Takahiro WATARI
Department of Environmental Systems Engineering, Nagaoka University of Technology, Japan
Daisuke TANIKAWA
Department of Civil and Environmental Engineering, National Institute of Technology, Kure College, Japan
Kyohei KURODA
Department of Environmental Systems Engineering, Nagaoka University of Technology, Japan
Akinobu NAKAMURA
Department of Environmental Systems Engineering, Nagaoka University of Technology, Japan
Nanako FUJII
Fundamental Material Laboratory Office, Material Technology Research and Development Laboratory, Research and Development Headquarters, Sumitomo Riko Company Limited, Japan
Fuminori YONEYAMA
Fundamental Material Laboratory Office, Material Technology Research and Development Laboratory, Research and Development Headquarters, Sumitomo Riko Company Limited, Japan
Osamu WAKISAKA
Fundamental Material Laboratory Office, Material Technology Research and Development Laboratory, Research and Development Headquarters, Sumitomo Riko Company Limited, Japan
Masashi HATAMOTO
Department of Environmental Systems Engineering, Nagaoka University of Technology, Japan
Takashi YAMAGUCHI
Department of Environmental Systems Engineering, Nagaoka University of Technology, Japan

Keywords: downflow hanging sponge, ethylene glycol, upflow anaerobic sludge blanket

JOURNAL FREE ACCESS

2015 Volume 13 Issue 2 Pages 131-140

DOI https://doi.org/10.2965/jwet.2015.131

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Abstract

This study evaluated the performance of a novel treatment system consisting of an upflow anaerobic sludge blanket (UASB) and a downflow hanging sponge (DHS) for the treatment of industrial wastewater containing 8% ethylene glycol and 2% propylene glycol discharged from a rubber production unit. The system achieved high COD removal (91 ± 4.3%) and methane recovery (82 ± 20%) at an organic loading rate of 8.5 kg-COD/(m³•day). The UASB allowed an organic loading rate of 14 kg-COD/(m³•day) with a constant hydraulic retention time of 24 h. The COD of DHS effluent was 370 ± 250 mg-COD/L during the entire experimental period. Thus, the proposed system could be applicable for treating industrial wastewater containing ethylene glycol. Massively parallel 16S rRNA gene sequencing elucidated the microbial community structure of the UASB. The dominant family Pelobacteriaceae could mainly degrade the organic compounds of ethylene glycol and decomposed products of ethanol. In Archaea, the hydrogenotrophic methanogen family Methanobacteriaceae was predominant in UASB granular sludge.

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