https://scholars.lib.ntu.edu.tw/handle/123456789/407944
標題: | Aerobic granulation of protein-rich granules from nitrogen-lean wastewaters | 作者: | Chen Y.-Y. Ju S.-P. Lee D.-J. |
關鍵字: | Aerobic granules;Nitrogen species;PN/PS;Stability | 公開日期: | 2016 | 卷: | 218 | 起(迄)頁: | 469-475 | 來源出版物: | Bioresource Technology | 摘要: | Proteins (PN)-rich granules are stable in structure in long-term reactor operations. This study proposed to cultivate PN-rich granules with PN/polysaccharides (PS) >20 from nitrogen lean wastewater, with ammonia-nitrogen as sole nitrogen source at chemical oxygen demand (COD)/N of 153.8. The yielded granules can sustain their structural stability in sequencing batch reactor mode for sufficient treatment of wastewaters up to 7000 mg/L COD and with COD/N < 500 and in continuous-flow reactor for successful 216-d treatment of wastewaters up to organic loading rate (OLR) of 39 kg/m3-d. The produced granules were enriched with Firmicutes and £]-proteobacteria as dominating strains. More than 58% of the nitrogen fed in the nitrogen-lean wastewater is converted to the PN in the granules. The replacement of ammonia by nitrate as sole nitrogen source led to granules enriched with £^-proteobacteria which are easily deteriorated at low OLR. ? 2016 Elsevier Ltd. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/407944 | ISSN: | 09608524 | DOI: | 10.1016/j.biortech.2016.06.120 |
顯示於: | 化學工程學系 |
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