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首页> 外文期刊>Journal of Environmental Science and Health >Anaerobic digestion of wastewater rich in sulfate and sulfide: effects of metallic waste addition and micro-aeration on process performance and methane production
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Anaerobic digestion of wastewater rich in sulfate and sulfide: effects of metallic waste addition and micro-aeration on process performance and methane production

机译：厌氧消化富含硫酸盐和硫化物的废水：添加金属废物和微曝气对工艺性能和甲烷产生的影响

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摘要

This work explores the effect of two metallic wastes (mining wastes, MW; fly ashes, FA) and micro-aeration (MA) on the anaerobic digestion of wastewater which is rich in sulfate and sulfide. Two initial COD concentrations (5,000 and 10,000 mg/L) were studied under both conditions in batch systems at 35 degrees C, with a fixed COD/SO42- ratio = 10, with 100 mg/L of S2-. It was observed that the use of MW and FA in the assays with an initial COD concentration of 10,000 mg/L resulted in a simultaneous increase in COD removal, sulfate removal, sulfide removal and methane generation, while MA only improved the COD and sulfide removals in comparison with the control system. On the contrary, the use of MW, FA or MA in systems with initial COD concentrations equal to or lower than 5,000 mg/L did not show any improvement with respect to the control system in terms of COD removal, sulfate removal or methane generation, with only sulfide removal being positively affected by MW and FA.
机译：这项工作探讨了两种金属废物（采矿废物，MW;飞灰，FA）和微曝气（MA）对富含硫酸盐和硫化物的废水的厌氧消化的影响。在这两种条件下，在35°C的分批系统中研究了两种初始COD浓度（5,000和10,000 mg / L），其中COD / SO42-比率固定为10，S2-为100 mg / L。观察到，在初始COD浓度为10,000 mg / L的测定中使用MW和FA可同时增加COD去除，硫酸盐去除，硫化物去除和甲烷生成，而MA仅可提高COD和硫化物去除与控制系统相比。相反，在初始COD浓度等于或低于5,000 mg / L的系统中使用MW，FA或MA相对于控制系统而言，在COD去除，硫酸盐去除或甲烷生成方面没有任何改善， MW和FA仅对硫化物的去除有积极影响。

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  • 来源
    《Journal of Environmental Science and Health》 |2019年第10期|1035-1043|共9页
  • 作者

  • 作者单位

    Univ Santiago Chile Dept Ingn Quim Lab Biotecnol Ambiental Ave Lib Bdo OHiggins 3363 Santiago Region Metropol Chile;

    Inst Grasa CSIC Seville Spain;

    Univ Tecnol La Habana Ctr Estudios Tecnol Energet Renovables Havana Cuba;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Anaerobic digestion; fly ashes; micro-aeration; mining wastes; sulfide removal;

    机译：厌氧消化;飞灰微曝气采矿废料;硫化物去除;

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