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Biofiltration Polishing of Ozone Treated Secondary Municipal Wastewater Treatment Plant Effluent.

机译:臭氧处理的二级城市污水处理厂废水的生物过滤抛光。

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摘要

Ozone has been shown to be very effective in the transformation of several CECs that escape the wastewater treatment process, but there is concern whether toxic transformation products are formed. Two parallel biofilter columns with granular activated carbon (GAC) and filter sand following a pilot scale ozone unit to treat secondary municipal wastewater treatment plant effluent were studied. The biologically activated carbon (BAC) biofilter outperformed the sand biofilter in terms of DOC, DO and UV254 removal. In addition, GAC supported more biological activity than sand media. Genotoxicity results show reduced wastewater genotoxicity following ozonation and further reduction following BAC and sand biofiltration. However, bacterial re-growth did occur in both biofilters following ozonation and needs to be taken into consideration when implementing ozone-biofiltration units.
机译:臭氧在多种CEC的转化中表现出了非常有效的效果,这些CEC逃脱了废水处理过程,但是人们担心是否会形成有毒的转化产物。研究了两个平行的带有颗粒活性炭(GAC)和滤砂的生物滤池柱,该滤池采用中试规模的臭氧装置处理市政二级污水处理厂废水。就去除DOC,DO和UV254而言,生物活性炭(BAC)生物过滤器的性能优于沙子生物过滤器。此外,GAC比沙质介质支持更多的生物活性。遗传毒性结果表明,臭氧氧化后的废水遗传毒性降低,而BAC和砂子生物过滤后的废水遗传毒性进一步降低。但是,在臭氧化之后,两个生物滤池中都确实发生了细菌的重新生长,因此在实施臭氧生物滤池装置时需要将其考虑在内。

著录项

  • 作者

    Reaume, Michael.;

  • 作者单位

    University of Windsor (Canada).;

  • 授予单位 University of Windsor (Canada).;
  • 学科 Engineering Environmental.;Engineering Civil.;Engineering Chemical.
  • 学位 M.A.Sc.
  • 年度 2012
  • 页码 143 p.
  • 总页数 143
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

  • 入库时间 2022-08-17 11:42:59

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