https://scholars.lib.ntu.edu.tw/handle/123456789/407974
標題: | Partial nitrification of wastewaters with high NaCl concentrations by aerobic granules in continuous-flow reactor | 作者: | Wan C. Yang X. Lee D.-J. Liu X. Sun S. Chen C. |
關鍵字: | Aerobic granules;Continuous-flow reactor;Microbial community;NaCl;Osmoprotectants | 公開日期: | 2014 | 卷: | 152 | 起(迄)頁: | 1-6 | 來源出版物: | Bioresource Technology | 摘要: | Wastewaters with high salinity are yielded that need sufficient treatment. This study applied aerobic granules to conduct partial nitrification reactions for wastewaters with high NaCl concentrations in a continuous-flow reactor. The present granules revealed partial nitrification performances at nitrite accumulation rate >95% and chemical oxygen demand (COD) removal at >85% at salt concentration up to 50g l-1. High salinity led to compact and tough granules. The granules applied electrogenic ion pump and sodium-calcium exchanger to reduce intracellular Na+ concentration; generated amino acids as osmoprotectants to resist the high osmotic pressure; produced excess extracellular polysaccharides and proteins with secretion of c-di-GMP; revised microbial community with halophilic strains. The present continuous-flow aerobic granule reactor (CFAGR) is a promising process to convert ammonium in highly saline wastewaters to nitrite, which can be applied with a subsequent Anammox process for efficient nitrogen removal. ? 2013 Elsevier Ltd. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/407974 | ISSN: | 09608524 | DOI: | 10.1016/j.biortech.2013.10.112 |
顯示於: | 化學工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。