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首页> 外文期刊>International Journal of Environmental Research and Public Health >Solar-Enhanced Advanced Oxidation Processes for Water Treatment: Simultaneous Removal of Pathogens and Chemical Pollutants
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Solar-Enhanced Advanced Oxidation Processes for Water Treatment: Simultaneous Removal of Pathogens and Chemical Pollutants

机译：太阳能先进的水处理高级氧化工艺：病原体和化学污染物的同时去除

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The review explores the feasibility of simultaneous removal of pathogens and chemical pollutants by solar-enhanced advanced oxidation processes (AOPs). The AOPs are based on in-situ generation of reactive oxygen species (ROS), most notably hydroxyl radicals •OH, that are capable of destroying both pollutant molecules and pathogen cells. The review presents evidence of simultaneous removal of pathogens and chemical pollutants by photocatalytic processes, namely TiO2 photocatalysis and photo-Fenton. Complex water matrices with high loads of pathogens and chemical pollutants negatively affect the efficiency of disinfection and pollutant removal. This is due to competition between chemical substances and pathogens for generated ROS. Other possible negative effects include light screening, competitive photon absorption, adsorption on the catalyst surface (thereby inhibiting its photocatalytic activity), etc. Besides, some matrix components may serve as nutrients for pathogens, thus hindering the disinfection process. Each type of water/wastewater would require a tailor-made approach and the variables that were shown to influence the processes—catalyst/oxidant concentrations, incident radiation flux, and pH—need to be adjusted in order to achieve the required degree of pollutant and pathogen removal. Overall, the solar-enhanced AOPs hold promise as an environmentally-friendly way to substitute or supplement conventional water/wastewater treatment, particularly in areas without access to centralized drinking water or sewage/wastewater treatment facilities.
机译：该评论探讨了通过太阳增强的高级氧化过程（AOP）同时去除病原体和化学污染物的可行性。 AOP是基于活性氧（ROS）的原位生成，最主要是羟基•OH，它们能够破坏污染物分子和病原体细胞。综述提供了通过光催化过程，即TiO 2 光催化和光芬顿同时去除病原体和化学污染物的证据。含有大量病原体和化学污染物的复杂水基质会对消毒和污染物去除效率产生负面影响。这是由于化学物质和病原体之间竞争产生的ROS。其他可能的负面影响包括光屏蔽，竞争性光子吸收，在催化剂表面的吸附（从而抑制其光催化活性）等。此外，某些基质成分可能充当病原体的营养物质，从而阻碍了消毒过程。每种类型的水/废水都需要量身定制的方法，必须调整影响过程的变量（催化剂/氧化剂的浓度，入射辐射通量和pH值），以达到所需的污染物排放水平。病原体去除。总体而言，太阳能增强型AOP有望成为一种环保的替代或补充常规水/废水处理方式，特别是在无法获得集中式饮用水或污水/废水处理设施的地区。

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