Fate of priority pharmaceuticals and their main metabolites and transformation products in microalgae-based wastewater treatment systems

JOURNAL OF HAZARDOUS MATERIALS

卷:390

Article

Jesus Garcia-Galan, Maria¹  Arashiro, Larissa¹  Santos, Lucia H. M. L. M.^2,3  Insa, Sara^2,3  Rodriguez-Mozaz, Sara^2,3  Barcelo, Damia^2,3,4  Ferrer, Ivet¹  Garfi, Marianna¹ 

[1] Univ Politecn Catalunya BarcelonaTech, Dept Civil & Environm Engn, Grp Environm Engn & Microbiol, GEMMA, C Jordi Girona 1-3,Bldg D1, E-08034 Barcelona, Spain

[2] Catalan Inst Water Res 1CRA, C Emili Grahit 101, Girona 17003, Spain

[3] Univ Girona, Girona, Spain

[4] IDAEA CSIC, Dept Environm Chem, Water & Soil Qual Res Grp, C Jordi Girona 18-26, Barcelona 08034, Spain

关键词: High rate algal pond;    Green treatment;    Low-cost treatment;    Bioaccumulation factor;    Photodegradation;    Byproducts;    Biomass;   

DOI  :  10.1016/j.jhazmat.2019.121771

来源: Elsevier

【 摘 要 】

The present study evaluates the removal capacity of two high rate algae ponds (HRAPs) to eliminate 12 pharmaceuticals (PhACs) and 26 of their corresponding main metabolites and transformation products. The efficiency of these ponds, operating with and without primary treatment, was compared in order to study their capacity under the best performance conditions (highest solar irradiance). Concentrations of all the target compounds were determined in both water and biomass samples. Removal rates ranged from moderate (40-60 %) to high (>60 %) for most of them, with the exception of the psychiatric drugs carbamazepine, the ss-blocking agent metoprolol and its metabolite, metoprolol acid. O-desmethylvenlafaxine, despite its very low biodegradability in conventional wastewater treatment plants, was removed to certain extent (13-39 %). Biomass concentrations suggested that bioadsorption/bioaccumulation to microalgae biomass was decisive regarding the elimination of non-biodegradable compounds such as venlafaxine and its main metabolites. HRAP treatment with and without primary treatment did not yield significant differences in terms of PhACs removal efficiency. The implementation of HRAPs as secondary treatment is a feasible alternative to CAS in terms of overall wastewater treatment, including organic micropollutants, with generally higher removal performances and implying a green, low-cost and more sustainable technology.

【 授权许可】

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