A twilight for the complete nitrogen removal via synergistic partial-denitrification, anammox, and DNRA process
نویسندگان
چکیده
Abstract The prolonged start-up time and low total nitrogen removal of anammox hinder its full-scale application. Herein, application nano-zerovalent iron strength magnetic field in sole combination to abbreviate the period long-term process stability was carried out. reactor’s with only (R3) 34 days, saving 43.3% compared control. increase efficiency over control 43.7% during period. However, reactor coupled treatment (R4) more stable higher (80%) at high loading (5.28 kg/m 3 /d). Anammox gene copy number R4 highest after 180 days culture, followed by (R2) R3 reactor. functional genes denitrifying bacteria (nirK nirS) were also identified all reactors numbers R2, R3. Furthermore, throughput analysis showed that Thauera performing partial denitrification, Ignavibacterium dissimilatory nitrate reduction ammonium or nitrite present reactors, abundant R4, confirming attributed synergistic relationship other nitrogenous genera anammox. abundance PD DNRA nano-zero valent field, achieved this research, opens opportunity complete via partial-denitrification, anammox, (SPDAD) process.
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ژورنال
عنوان ژورنال: npj clean water
سال: 2021
ISSN: ['2059-7037']
DOI: https://doi.org/10.1038/s41545-021-00122-5