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Microbial community structures and functions of hypersaline heterotrophic denitrifying process: Lab-scale and pilot-scale studies
Bioresource Technology ( IF 9.7 ) Pub Date : 2020-03-24 , DOI: 10.1016/j.biortech.2020.123244 Shiyu Miao 1 , Chao Jin 2 , Ruiping Liu 3 , Yaohui Bai 1 , Huijuan Liu 4 , Chengzhi Hu 1 , Jiuhui Qu 3
Bioresource Technology ( IF 9.7 ) Pub Date : 2020-03-24 , DOI: 10.1016/j.biortech.2020.123244 Shiyu Miao 1 , Chao Jin 2 , Ruiping Liu 3 , Yaohui Bai 1 , Huijuan Liu 4 , Chengzhi Hu 1 , Jiuhui Qu 3
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High-nitrate wastewaters are known pose substantial risks to human and environmental health, while their effective treatment remains difficult. The denitrification of saline, high-NO wastewaters was investigated at the laboratory- and pilot-scale experiment. Complete denitrification was achieved for three different realistic wastewaters, and the maximum influent [NO] and salinity were as high as 20,500 mg/L and 7.8%, respectively. The results of microbial community structure analyses revealed that the sequences of denitrifying functional bacteria accounted for 96.2% of all sequences, and the functional genes for denitrification in bacteria were enriched with elevated salinity and [NO]. A significant difference was observed in the dominant bacterial genus between synthetic and realistic wastewaters. and species evolved to be the most common dominant genera contributing to the processes of nitrate, nitrite, and nitrous oxide reductase. This study is practically valuable for the treatment of realistic, saline, high-NO wastewaters via denitrification by heterotrophic bacteria.
中文翻译：
高盐异养反硝化过程的微生物群落结构和功能：实验室规模和中试规模研究
众所周知，高硝酸盐废水对人类和环境健康构成重大风险，而对其进行有效处理仍然很困难。在实验室和中试规模的实验中研究了含盐、高 NO 废水的反硝化。对三种不同的实际废水实现了完全反硝化，最大进水[NO]和盐度分别高达20,500 mg/L和7.8%。微生物群落结构分析结果显示，反硝化功能细菌序列占全部序列的96.2%，且细菌反硝化功能基因随盐度升高和[NO]富集。合成废水和实际废水之间的优势细菌属存在显着差异。并且物种进化成为对硝酸盐、亚硝酸盐和一氧化二氮还原酶过程做出贡献的最常见的优势属。这项研究对于通过异养细菌反硝化处理现实的含盐高NO废水具有实际价值。
更新日期：2020-03-24
中文翻译：
高盐异养反硝化过程的微生物群落结构和功能：实验室规模和中试规模研究
众所周知，高硝酸盐废水对人类和环境健康构成重大风险，而对其进行有效处理仍然很困难。在实验室和中试规模的实验中研究了含盐、高 NO 废水的反硝化。对三种不同的实际废水实现了完全反硝化，最大进水[NO]和盐度分别高达20,500 mg/L和7.8%。微生物群落结构分析结果显示，反硝化功能细菌序列占全部序列的96.2%，且细菌反硝化功能基因随盐度升高和[NO]富集。合成废水和实际废水之间的优势细菌属存在显着差异。并且物种进化成为对硝酸盐、亚硝酸盐和一氧化二氮还原酶过程做出贡献的最常见的优势属。这项研究对于通过异养细菌反硝化处理现实的含盐高NO废水具有实际价值。
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