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首页> 外文期刊>Environmental Science & Technology >From Genes to Nitrogen Removal: Determining the Impacts of Poultry Industry Wastewater on Tidal Creek Denitrification
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From Genes to Nitrogen Removal: Determining the Impacts of Poultry Industry Wastewater on Tidal Creek Denitrification

机译：从基因到脱氮：确定家禽业废水对潮汐溪反硝化的影响

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摘要

The intensification of the poultry industry in the last decades has led to a sharp increase in the number of animal processing plants discharging wastewater to water bodies. These discharges may have a significant effect on environmental quality and on important ecosystem functions, such as denitrification. We conducted a seasonal survey and a microcosm experiment in an impacted and a reference tidal creek to investigate the impacts of wastewater discharge from a poultry processing plant on sedimentary microbial communities, denitrification activity, and nitrate removal. Denitrification potential was measured using slurry incubations, and the microbial community was examined with 16S rDNA MiSeq sequencing and quantitative polymerase chain reaction of denitrification genes. The lowest denitrification rates were observed in the impacted creek, especially near the wastewater discharge, and denitrification inhibition by impacted creek water was clearly observed in the microcosm experiment. Denitrification rates were associated with changes in the microbial community composition and gene abundance. Estimated nitrate removal was lower in the impacted creek, and higher chlorophyll levels were observed in a downstream coastal bay through remote sensing. This study demonstrates denitrification inhibition by wastewater discharge from a poultry processing plant with potential consequences to coastal eutrophication.
机译：近几十年来，家禽业的集约化导致向水体排放废水的动物加工厂的数量急剧增加。这些排放物可能对环境质量和重要的生态系统功能（例如反硝化）产生重大影响。我们在受影响的潮汐小溪和参考潮汐小溪中进行了季节性调查和缩影实验，以调查家禽加工厂的废水排放对沉积微生物群落，反硝化活性和硝酸盐去除的影响。使用浆液温育测量反硝化潜能，并通过16S rDNA MiSeq测序和反硝化基因定量聚合酶链反应检查微生物群落。在受影响的小河中，特别是在废水排放附近，观察到最低的反硝化速率，并且在微观实验中清楚地观察到了受影响的小溪水对反硝化的抑制作用。反硝化率与微生物群落组成和基因丰度的变化有关。估计在受影响的小溪中硝酸盐的去除率较低，而通过遥感在下游沿海海湾中观察到的叶绿素水平较高。这项研究表明，家禽加工厂的废水排放会抑制反硝化作用，对沿海富营养化有潜在的影响。

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  • 来源
    《Environmental Science & Technology》 |2020年第1期|146-157|共12页
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    Department of Biological Sciences Virginia Institute of Marine Science College of William & Mary Gloucester Point Virginia 23062 United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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