Aerobic biodegradation of 2,6-dichlorophenol in a nitrifying granular sludge reactor: System performance and microbial community evolution
Aerobic biodegradation of 2,6-dichlorophenol in a nitrifying granular sludge reactor: System performance and microbial community evolution
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硝化颗粒污泥反应器中 2,6-二氯苯酚的好氧生物降解：系统性能和微生物群落进化
DOI：
10.1016/j.jwpe.2020.101524
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发表时间：
2020-10
影响因子：
7
通讯作者：
Qin Wei
中科院分区：
文献类型：
--
作者：
Dong Wei;Mingrun Li;Qianqian Meng;Liangguo Yan;Rui Feng;Yongfang Zhang;Dawei Fan;Xuehui Pang;Bin Du;Qin Wei
研究了硝化颗粒污泥（NGS）系统共代谢降解2，6-二氯苯酚（2，6-DCP）过程中硝化性能、微生物产物和微生物群落的变化。经过90 d的驯化，NH 4 +-N和2，6-DCP的去除率分别达到99.8%和99.9%。2，6-DCP的存在导致NGS释放更多的蛋白质样物质，以保护NGS免受有毒环境的影响。2，6-DCP的存在提高了NGS中氨氧化细菌（AOB）和亚硝酸盐氧化细菌的活性，AOB活性的提高提高了NGS的共代谢能力。硝化能力的增加可能是2，6-DCP共代谢生物降解的积极影响。NGS序批式反应器经过长期运行后，2，6-DCP降解的主要菌种为Amaricoccus和Acidovorax。
In the present study, the changes in nitrification performance, microbial products, and microbial community were evaluated in a nitrifying granular sludge (NGS) system for co-metabolic degradation of 2,6-dichlorophenol (2,6-DCP). After the 90-d acclimation period, the removal efficiencies of NH4+-N and 2,6-DCP reached 99.8 % and 99.9 %, respectively. The presence of 2,6-DCP caused the NGS to release more protein-like substances to protect the NGS from toxic environments. The activities of ammonia-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria in the NGS were enhanced in the presence of 2,6-DCP, and the enhancement of AOB activity improved the co-metabolism ability of NGS. The increase in nitrification capacity might have been a positive effect of 2,6-DCP co-metabolic biodegradation. Moreover,AmaricoccusandAcidovoraxwere the main strains involved after long-term operation in the degradation of 2,6-DCP in the NGS sequencing batch reactor.
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