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首页> 外文期刊>Environmental Science & Technology >Reclamation of Real Urban Wastewater Using Solar Advanced Oxidation Processes: An Assessment of Microbial Pathogens and 74 Organic Microcontaminants Uptake in Lettuce and Radish
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Reclamation of Real Urban Wastewater Using Solar Advanced Oxidation Processes: An Assessment of Microbial Pathogens and 74 Organic Microcontaminants Uptake in Lettuce and Radish

机译：使用太阳能高级氧化工艺回收实际的城市废水：莴苣和萝卜中微生物病原体和74种有机微污染物吸收的评估

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In this study, disinfection of urban wastewater (UWW) with two solar processes (H2O2 20 mg/L and photo-Fenton 10 mg/L-Fe2+ /20 mg/L-H2O2 at natural water pH) at pilot scale using a 60 L compound parabolic collector reactor for irrigation of two raw-eaten vegetables (lettuce and radish) has been investigated. Several microbial targets (total coliforms, Escherichia coli, Salmonella spp., and Enterococcus spp.) naturally occurring in UWW and 74 organic microcontaminants (OMCs) were monitored. Disinfection results showed no significant differences between both processes, showing the following inactivation resistance order: Salmonella spp. < E. coli < total coliforms < Enterococcus spp. Reductions of target microorganisms to concentrations below the limit of detection (LOD) was achieved in all cases with cumulative solar UV energy per volume (Q(UV)) ranged from 12 to 40 kJ/ L (90 min to 5 h). Solar photo-Fenton showed a reduction of 66% of OMCs and solar/H2O2 of 56% in 5 h treatment. Irrigation of radish and lettuce with solar mineral water was performed for 6 and 16 weeks, respectively. The presence of bacteria was monitored in surfaces and uptake of leaves, fruit, and also in soil. The bacterial concentrations detected were below the LOD in the 81.2% (lettuce) and the 87.5% (radish) of the total number of samples evaluated. Moreover, uptake of OMCs was reduced above 70% in crops irrigated with solar treated effluents in comparison with secondary effluents of UWW.
机译：在这项研究中，使用60 L的中试规模的两个太阳能过程（H2O2 20 mg / L和Photo-Fenton 10 mg / L-Fe2 + / 20 mg / L-H2O2在自然水pH值下）消毒。已经研究了用于灌溉两种未食用蔬菜（生菜和萝卜）的复合抛物线收集器反应堆。监测了自然界中普遍存在的几种微生物目标（大肠菌群，大肠杆菌，沙门氏菌和肠球菌）和74种有机微污染物（OMC）。消毒结果表明两个过程之间没有显着差异，显示出以下灭活抗性顺序：沙门氏菌。 <大肠杆菌<大肠菌群<肠球菌属在所有情况下，单位体积的累积太阳紫外线能量（Q（UV））为12至40 kJ / L（90分钟至5小时）时，均可将目标微生物的浓度降低至检测限（LOD）以下。太阳光芬顿显示在5小时的处理中，OMC减少了66％，太阳/ H2O2减少了56％。用太阳能矿泉水分别灌溉萝卜和生菜6周和16周。在表面，叶片，果实和土壤中的摄取情况下监测细菌的存在。在所评估的样本总数中，检测到的细菌浓度在LOD之下为81.2％（生菜）和87.5％（萝卜）。此外，与UWW的二次废水相比，在用日光处理废水灌溉的农作物中，OMC的吸收减少了70％以上。

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  • 来源
    《Environmental Science & Technology》 |2019年第16期|9705-9714|共10页
  • 作者

    Aguas Yelitza; Hincapie Margarita; Martinez-Piernas Ana Belen; Aguera Ana; Fernandez-Ibanez Pilar; Nahim-Granados Samira; Inmaculada Polo-Lopez Maria;

  • 作者单位

    Univ Sucre Sch Engn Cra 28 5-268 Sincelejo 700001 Colombia|Univ Medellin Sch Engn Cra 87 30-65 Medellin 050026 Colombia;

    Univ Medellin Sch Engn Cra 87 30-65 Medellin 050026 Colombia;

    Joint Ctr Univ Almeria CIEMAT CIESOL Almeria Spain;

    Univ Ulster Sch Engn Nanotechnol & Integrated BioEngn Ctr Newtownabbey BT37 0QB North Ireland;

    Joint Ctr Univ Almeria CIEMAT CIESOL Almeria Spain|Plataforma Solar Almeria CIEMAT Carretera Senes Km 4 Tabernas 04200 Almeria Spain;

  • 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);
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