https://scholars.lib.ntu.edu.tw/handle/123456789/598185
標題: | Cultivation of sulfide-driven partial denitrification granules for efficient nitrite generation from nitrate-sulfide-laden wastewater | 作者: | Liu C Li Y Gai J Niu H Zhao D Wang A Lee D.-J. DUU-JONG LEE |
關鍵字: | Elemental sulfur;Extracellular polymeric substances;Granulation;Nitrite production;Sulfide partial denitrification;Denitrification;Nitrates;Nitrification;Nitrogen removal;Particle size;Sulfur;Sulfur compounds;Wastewater treatment;ANAMMOX;Elemental sulphur;Extracellular;Extracellular polymeric substance;Granular sludge;Nitrates removal;Polymeric substance;Sulphide partial denitrification;Up-flow anaerobic sludge bed reactors;experimental study;granular medium;nitrate (ester);pollutant removal;removal experiment;wastewater treatment;Thiobacillus;nitric acid derivative;nitrite;nitrogen;sulfide;bioreactor;denitrification;oxidation reduction reaction;sewage;wastewater;Bioreactors;Nitrites;Nitrogen;Oxidation-Reduction;Sewage;Sulfides;Waste Water | 公開日期: | 2022 | 卷: | 804 | 來源出版物: | Science of the Total Environment | 摘要: | Sulfide partial denitrification (SPD) is an alternative pathway for nitrite production accompanied with elemental sulfur (S0) production for nitrate removal from wastewater with anammox. In this study, the SPD granular sludge was cultivated for the first time in an upflow anaerobic sludge bed (UASB) reactor to reach the efficacy of maximum nitrate-to-nitrite transformation ratio of 92% and an in-situ maximum NO3?-N reduction rate of 2.46 kg-N/m3-d, both much higher than literature results. Mature granules had an average particle size of 2.52 mm and hold smooth surface with excess rod bacteria. The elements Ca and S, and proteins in extracellular polymeric substances contributed to granule structure's stability. Enriched Thiobacillus genus was proposed to accumulate nitrite at moderate HRT (2–6 h). The immobilized functional strains assist efficient partial nitrification reactions to be realized with formed S0 as byproduct. ? 2021 |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85114676669&doi=10.1016%2fj.scitotenv.2021.150143&partnerID=40&md5=588e6df10c7ce3214de8b27ec04d260b https://scholars.lib.ntu.edu.tw/handle/123456789/598185 |
ISSN: | 00489697 | DOI: | 10.1016/j.scitotenv.2021.150143 |
顯示於: | 化學工程學系 |
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