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首页> 外文期刊>Journal of Environmental Science and Health. A, Toxic/Hazardous Substances & Environmental Engineering >Rapid disinfection of E-Coliform contaminated water using WO_3 semiconductor catalyst by laser-induced photo-catalytic process
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Rapid disinfection of E-Coliform contaminated water using WO_3 semiconductor catalyst by laser-induced photo-catalytic process

机译：WO_3半导体催化剂通过激光诱导的光催化过程对E-大肠菌污染水进行快速消毒

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摘要

Laser-induced photo-catalysis process using WO3 semiconductor catalyst was applied for the study of disinfection effectiveness of E-coliform-contaminated water. For this purpose, wastewater polluted with E-coliform bacteria was exposed to 355 nm UV radiations generated by third harmonic of Nd: YAG laser in special glass cell with and without WO_3 catalyst. E-Coliform quantification was performed by direct plating method to obtain the efficiency of each disinfection treatment. The dependence of disinfection process on laser irradiation energy, amount of catalyst and duration of laser irradiation was also investigated. The disinfection with WO_3 was quite efficient inactivating E-coliforms. For inactivation of E-coliforms, less than 8 minutes' laser irradiation was required, so that, the treated water complies with the microbial standards for drinking water. This study opens the possibility of application of this simple method in rural areas of developing countries using solar radiation.
机译：应用WO3半导体催化剂进行激光诱导的光催化工艺研究了大肠杆菌污染的水的消毒效果。为此，在有和没有WO_3催化剂的特殊玻璃池中，将Nd：YAG激光的三次谐波产生的被大肠杆菌菌污染的废水暴露在355 nm的紫外线辐射下。通过直接电镀法进行E-大肠菌的定量，以获得每种消毒处理的效率。还研究了消毒过程对激光辐照能量，催化剂用量和激光辐照时间的依赖性。用WO_3消毒非常有效地灭活大肠杆菌。为了灭活大肠杆菌，需要少于8分钟的激光照射，因此，处理后的水符合饮用水的微生物标准。这项研究为在发展中国家利用太阳辐射的农村地区应用这种简单方法提供了可能性。

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