A novel method to remove nitrogen from reject water in wastewater treatment plants using a methane- and methanol-dependent bacterial consortium.

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ID: 87122
2020
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Abstract
This study proposes a novel method to directly treat reject water with a high ammonium content, without relying on dilution. The originality of this method resides in leveraging the coordinated action of a methane- and methanol-dependent bacterial consortium and the biogas generated from wastewater treatment facilities. Specifically, ammonium is removed through autotrophic assimilation in the glutamate cycle of methanotrophs and Methylophilus while, simultaneously, methanol generated by methanotrophs is treated through formaldehyde assimilation as Methylophilus undergo the same ribulose monophosphate cycle as methanotrophs. Using this method, the backflow of high-concentration ammonium into the wastewater treatment process was reduced to 59% in a single operation using a sequencing batch reactor at a mean influent concentration of 877.3 mg L. However, the removal rate temporarily declined to an average of 37.6% at a concentration of 800 mg L or above, which was imputed to the influence of toxic intermediates.
Reference Key
kim2020awater Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Kim, I-Tae;Lee, Ye-Eun;Jeong, Yoonah;Yoo, Yeong-Seok;
Journal Water research
Year 2020
DOI
S0043-1354(20)30048-8
URL
Keywords
ammonium biogas methanotrophs wastewater treatment plants bacterial consortium methylophilus reject water

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