...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Reduction of Cryptosporidium, Giardia, and Fecal Indicators by Bardenpho Wastewater Treatment
【24h】

Reduction of Cryptosporidium, Giardia, and Fecal Indicators by Bardenpho Wastewater Treatment

机译：Bardenpho废水处理减少隐孢子虫，贾第鞭毛虫和粪便指标

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Increased demand for water reuse and reclamation accentuates the importance for optimal wastewater treatment to limit protozoa in effluents. Two wastewater treatment plants utilizing advanced Bardenpho were investigated over a 12-month period to determine the incidence and reduction of Cryptosporidium , Giardia , Cyclospora , and fecal indicators. Results were compared to facilities that previously operated in the same geographical area. Protozoa (oo)cysts were concentrated using an electronegative filter and subsequently detected by fluorescent microscopy and/or PCR methods. Cryptosporidium and Giardia were frequently detected in raw sewage, but Cyclospora was not detected in any wastewater samples. Facilities with Bardenpho treatment exhibited higher removals of (oo)cysts than facilities utilizing activated sludge or trickling filters. This was likely due to Bardenpho systems having increased solid wasting rates; however, this mechanism cannot be confirmed as sludge samples were not analyzed. Use of dissolved-air-flotation instead of sedimentation tanks did not result in more efficient removal of (oo)cysts. Concentrations of protozoa were compared with each other, Escherichia coli , somatic coliphage, and viruses (pepper mild mottle virus, Aichi virus 1, adenovirus, and polyomaviruses JC and BK). Although significant correlations were rare, somatic coliphage showed the highest potential as an indicator for the abundance of protozoa in wastewaters.
机译：对水回用和再生的需求不断增加，这对于优化废水处理以限制废水中的原生动物至关重要。在12个月的时间里，对两家使用先进Bardenpho的废水处理厂进行了调查，以确定隐孢子虫，贾第鞭毛虫，环孢菌和粪便指标的发生率和减少率。将结果与以前在相同地理区域内运行的设施进行了比较。使用负电过滤器浓缩原生动物（oo）囊肿，然后通过荧光显微镜和/或PCR方法进行检测。在原污水中经常检出隐孢子虫和贾第鞭毛虫，但在任何废水样品中均未检出环孢菌。与使用活性污泥或滴滤池的设施相比，使用Bardenpho处理的设施表现出更高的（oo）囊清除率。这可能是由于Bardenpho系统的固废率提高了。但是，由于未对污泥样品进行分析，因此无法确定该机理。使用溶解气浮法代替沉淀池并不能更有效地去除（oo）囊肿。相互比较了原生动物，大肠杆菌，体细胞噬菌体和病毒（胡椒轻斑驳病毒，爱知病毒1，腺病毒以及多瘤病毒JC和BK）的浓度。尽管很少有显着的相关性，但体细胞噬菌体显示出最高的潜力，可以作为废水中原生动物数量的指标。

著录项

  • 来源
    《Environmental Science & Technology》 |2018年第12期|7015-7023|共9页
  • 作者

    Bradley W. Schmitz; Hitoha Moriyama; Eiji Haramoto; Masaaki Kitajima; Samendra Sherchan; Charles P. Gerba; Ian L. Pepper;

  • 作者单位

    Department of Civil & Environmental Engineering, National University of Singapore, Block E1A, #07-03, No. 1 Engineering Drive 2, Singapore, 117576;

    Department of Environmental Sciences, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511, Japan;

    Interdisciplinary Center for River Basin Environment, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511, Japan;

    Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, North 13 West 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan;

    Department of Global Environmental Health Services, Tulane University of Louisiana, 1440 Canal Street Suite 2100, New Orleans, Louisiana 70112, United States;

    Water and Energy Sustainable Technology (WEST) Center, The University of Arizona, 2959 West Calle Agua Nueva, Tucson, Arizona 85745, United States;

    Water and Energy Sustainable Technology (WEST) Center, The University of Arizona, 2959 West Calle Agua Nueva, Tucson, Arizona 85745, 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号