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首页> 外文期刊>Journal of Environmental Science and Health >UV/TiO2 photocatalytic disinfection of carbon-bacteria complexes in activated carbon-filtered water: Laboratory and pilot-scale investigation
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UV/TiO2 photocatalytic disinfection of carbon-bacteria complexes in activated carbon-filtered water: Laboratory and pilot-scale investigation

机译：活性炭过滤水中碳细菌复合物的UV / TiO2光催化消毒：实验室和中试规模的研究

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摘要

The occurrence of carbon-bacteria complexes in activated carbon filtered water has posed a public health problem regarding the biological safety of drinking water. The application of combined process of ultraviolet radiation and nanostructure titanium dioxide (UV/TiO2) photocatalysis for the disinfection of carbon-bacteria complexes were assessed in this study. Results showed that a 1.07 Lg disinfection rate can be achieved using a UV dose of 20 mJ cm(-2), while the optimal UV intensity was 0.01 mW cm(-2). Particle sizes >= 8 mu m decreased the disinfection efficiency, whereas variation in particle number in activated carbon-filtered water did not significantly affect the disinfection efficiency. Photoreactivation ratio was reduced from 12.07% to 1.69% when the UV dose was increased from 5 mJ cm(-2) to 20 mJ cm(-2). Laboratory and on-site pilot-scale experiments have demonstrated that UV/TiO2 photocatalytic disinfection technology is capable of controlling the risk posed by carbon-bacteria complexes and securing drinking water safety.
机译：活性炭过滤水中碳细菌复合物的出现已经提出了关于饮用水生物安全的公共卫生问题。这项研究评估了紫外线辐射和纳米结构二氧化钛（UV / TiO2）光催化组合工艺在碳细菌复合物消毒中的应用。结果表明，使用20 mJ cm（-2）的UV剂量可以达到1.07 Lg的消毒率，而最佳UV强度为0.01 mW cm（-2）。粒径大于等于8微米会降低消毒效率，而活性炭过滤水中的颗粒数量变化不会显着影响消毒效率。当紫外线剂量从5 mJ cm（-2）增加到20 mJ cm（-2）时，光活化率从12.07％降低到1.69％。实验室和现场中试规模的实验表明，UV / TiO2光催化消毒技术能够控制碳细菌复合物带来的风险并确保饮用水安全。

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  • 来源
    《Journal of Environmental Science and Health》 |2015年第12期|1274-1281|共8页
  • 作者

    Zhao Jin Hui; Chen Wei; Zhao Yaqian; Liu Cuiyun; Liu Ranbin;

  • 作者单位

    Nanjing Tech Univ, Coll Environm, Nanjing 211816, Jiangsu, Peoples R China.;

    Hohai Univ, Coll Environm, Nanjing, Jiangsu, Peoples R China.;

    Univ Coll Dublin, Sch Civil Struct & Environm Engn, UCD Dooge Ctr Water Resources Res, Dublin 2, Ireland.;

    Nanjing Tech Univ, Coll Environm, Nanjing 211816, Jiangsu, Peoples R China.;

    Univ Coll Dublin, Sch Civil Struct & Environm Engn, UCD Dooge Ctr Water Resources Res, Dublin 2, Ireland.;

  • 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

    Carbon-bacteria complexes; disinfection; UV/TiO2-photocatalysis; UV dose; drinking water;

    机译：碳细菌复合物;消毒;UV / TiO2-光催化;UV剂量;饮用水;

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