期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 667, 期 -, 页码 197-207出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2019.02.335
关键词
FluHelik photoreactor; UVC/H2O2; CFCs; Urban wastewater; Zebrafish embryo toxicity test
资金
- Associate Laboratory LSRE-LCM - FCT/MCTES (PIDDAC) [UID/EQU/50020/2019]
- FCT Investigator 2013 Programme [IF/00273/2013]
- CNPq (Brazil) [205781/2014-4]
- Spanish Agencia Estatal de Investigacion [CTM2017-84763-C3-R-2]
- Xunta de Galicia [ED431C2017/36]
An innovative photoreactor, FluHelik, was used to promote the degradation of contaminants of emerging concern (CECs) by a photochemical UVC/H2O2 process. First, the system was optimized for the oxidation of a model antibiotic, oxytetracycline (OTC), using both ultrapure water (UPW) and a real urban wastewater (UWW) (collected after secondary treatment) as solution matrices. Following, the process was evaluated for the treatment of a UWW spiked with a mixture of OTC and 10 different pharmaceuticals established by the Swiss legislation at residual concentrations (Sigma CECs <660 mu g L-1). The performance of the FluHelik reactor was analyzed both at lab and pre-pilot scale in multiple and single pass flow modes. The efficiency of the FluHelik photoreactor, at lab-scale, was evaluated at different operational conditions (H2O2 concentration, UVC lamp power (4, 6 and 11 W) and flow rate) and further compared with a conventional Jets photoreactor. Both photoreactors exhibited similar OTC removal efficiencies at the best conditions; however, the FluHelik reactor showed to be more efficient (1.3 times) in terms of mineralization when compared with the Jets reactor. Additionally, the efficiency of the UVC/H2O2 photochemical system using the FluHelik photoreactor in reducing the toxicity of the real effluent containing 11 pharmaceuticals was evaluated through zebrafish (Banjo rerio) embryo toxicity bioassays. FluHelik scale-up from laboratory to pre-pilot to promote UVC/ H2O2 photochemical process proved to be feasible. (C) 2019 Published by Elsevier B.V.
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