A novel method to remove nitrogen from reject water in wastewater treatment plants using a methane- and methanol-dependent bacterial consortium
| Autor: | Ye-Eun Lee, Yeong-Seok Yoo, Yoonah Jeong, I-Tae Kim |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Environmental Engineering
Nitrogen 0208 environmental biotechnology chemistry.chemical_element Sequencing batch reactor 02 engineering and technology 010501 environmental sciences Wastewater 01 natural sciences Waste Disposal Fluid Formaldehyde assimilation chemistry.chemical_compound Bioreactors Biogas Ammonium Waste Management and Disposal 0105 earth and related environmental sciences Water Science and Technology Civil and Structural Engineering Ecological Modeling Methanol Water Pulp and paper industry Pollution 020801 environmental engineering chemistry Methylophilus Sewage treatment Methane |
| Zdroj: | Water research. 172 |
| ISSN: | 1879-2448 |
| Popis: | 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−1. However, the removal rate temporarily declined to an average of 37.6% at a concentration of 800 mg L−1 or above, which was imputed to the influence of toxic intermediates. |
| Databáze: | OpenAIRE |
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