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首页> 外文期刊>Environmental Science and Pollution Research >Performance and microbial community of CIC anaerobic reactor treating food waste under different grease contents and inner circulation ratio
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Performance and microbial community of CIC anaerobic reactor treating food waste under different grease contents and inner circulation ratio

机译：CIC厌氧反应器的性能和微生物群落治疗不同润滑脂含量和内循环比例的食物垃圾

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摘要

High concentrations of grease easily inhibit anaerobic digestion. The stability of the process and microbial responses in the controlling internal circulation (CIC) reactor used for treating food waste were investigated under different grease contents and inner circulation ratios. Results showed that at the grease content of 1?g/L, the removal rates of 94% and 86–93% were achieved for chemical oxygen demand (COD) and NH~(3)–N, respectively. In contrast, when the grease content increased to 7?g/L, removal rates for COD and NH~(3)–N significantly decreased to 42.8 and 10%, respectively. In the three-dimensional excitation and emission matrix (3D-EEM) spectra of LB-EPS (loosely bound extracellular polymeric substances), the fluorescence intensity of coenzyme F~(420)was weakened in the granular sludge, and the fluorescence peak of aromatic protein disappeared in the TB-EPS (tightly bound EPS). The activity and stability of the granular sludge deteriorated with increasing grease content, in this case at 7?g/L. However, when the inner cycle ratio was increased to 4, the removal rate of COD and NH~(3)–N increased to about 70 and 76%, respectively. The adverse effects of grease could be decreased by increasing the inner cycle ratio. When the grease content increased from 1 to 7?g/L, the abundance of Methanofollis increased from 9.93 to 46.41%, while Methanothrix abundance was reduced from 18.4 to 3.07%. It could indicate that Methanothrix was sensitive to high grease content.
机译：高浓度的油脂容易抑制厌氧消化。在不同的润滑脂含量和内循环比下研究了用于治疗食物废物的控制内循环（CIC）反应器中的方法和微生物反应的稳定性。结果表明，在1μl≥1μl的润滑脂含量，分别为化学需氧量（COD）和NH〜（3）-N达到94％和86-93％的去除率。相反，当润滑脂含量增加至7μlΩ·克/升时，用于鳕鱼和NH〜（3）-N的去除速率分别显着降低至42.8％和10％。在LB-EPS的三维激发和发射矩阵（3D-EEM）光谱（松散地结合的细胞外聚合物），在颗粒污泥中赋予辅酶F〜（420）的荧光强度，芳族的荧光峰减弱蛋白质在TB-EPS中消失（紧密结合的EPS）。粒状污泥的活性和稳定性随着润滑脂含量的增加而劣化，在这种情况下以7Ω·克/升。然而，当内循环比率增加到4时，COD和NH〜（3）-N的去除率分别增加到约70％和76％。通过增加内循环比可以降低润滑脂的不利影响。当润滑脂含量从1升至7μlΩ·克/升时，甲基甲溶胶的丰度从9.93增加到46.41％，而甲沙噻吩丰度从18.4降至3.07％。它可能表明甲蛋白纤维对高油脂含量敏感。

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    Chengyuan Su; Lijian Zhao; Liming Liao; Jingjing Qin; Yuxiang Lu; Menglin Chen; Mei Huang; Zhi Huang;

  • 作者单位

    Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University) Ministry of Education;

    Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University) Ministry of Education;

    Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University) Ministry of Education;

    Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University) Ministry of Education;

    Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University) Ministry of Education;

    Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University) Ministry of Education;

    Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University) Ministry of Education;

    Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University) Ministry of Education;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境污染及其防治;环境科学、安全科学;
  • 关键词

    Controlling internal circulation reactor; Food waste; Grease; Extracellular polymeric substances; Microbial community;

    机译：控制内部循环反应器;食物垃圾;油脂;细胞外聚合物物质;微生物群落;

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