Boosting pharmaceutical removal through aeration in constructed wetlands

被引：45

作者：

Avila, Cristina ^{[1
,2
,3
]}

Garcia-Galan, Maria Jesus ^{[4
]}

Uggetti, Enrica ^{[4
]}

Montemurro, Nicola ^{[5
]}

Garcia-Vara, Manuel ^{[5
]}

Perez, Sandra ^{[5
]}

Garcia, Joan ^{[4
]}

Postigo, Cristina ^{[5
]}

机构：

[1] AIMEN Technol Ctr, 27A Torneiros, Pontevedra 36410, Porrino, Spain

[2] Univ Girona, ICRA, Catalan Inst Water Res, Sci & Technol Pk,Emili Grahit 101, E-17003 Girona, Spain

[3] Univ Girona, E-17003 Girona, Spain

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

[5] CSIC, Inst Environm Assessment & Water Res IDAEA, Dept Environm Chem, Water Environm & Food Chem Unit ENFOCHEM, Jordi Girona 18, Barcelona 08034, Spain

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2021年 / 412卷

关键词：

Antibiotics; Decentralized wastewater treatment; Ecotoxicity assessment; Emerging contaminants; Intermittent-aeration; Nature-based solutions; WASTE-WATER TREATMENT; PERSONAL CARE PRODUCTS; TRACE ORGANIC CONTAMINANTS; NITROGEN REMOVAL; FULL-SCALE; TRANSFORMATION PRODUCTS; INTERMITTENT AERATION; EMERGING CONTAMINANTS; PERFORMANCE EVALUATION; TREATMENT EFFICIENCY;

D O I：

10.1016/j.jhazmat.2021.125231

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This work evaluated the removal efficiency of 13 wastewater-borne pharmaceuticals in a pilot constructed wetland (CW) operated under different aeration strategies (no aeration, intermittent and continuous). Aeration improved the removal of conventional wastewater parameters and the targeted micropollutants, compared to the non-aerated treatment. Reduction of chemical oxygen demand (COD) and total nitrogen (TN) was slightly higher applying intermittent aeration than applying continuous aeration, the opposite was observed for the investigated pharmaceuticals. Seven targeted compounds were found in influent wastewater, and five of them (acetaminophen, diclofenac, ketoprofen, bezafibrate and gemfibrozil) were efficiently removed (> 83%) in the aerated systems. The overall risk of the investigated samples against aquatic ecosystems was moderate, decreasing in the order influent > no aeration > intermittent aeration > continuous aeration, based on the hazard quotient approach. Lorazepam, diclofenac and ketoprofen were the pharmaceuticals that could contribute the most to this potential environmental impact of the CW effluents after discharge. To the authors? knowledge this is the first sound study on the removal and fate of ketoprofen, bezafibrate, and lorazepam in aerated CWs, and provides additional evidence on the removal and fate of acetaminophen, diclofenac, gemfibrozil, and carbamazepine in this type of bioremediation systems at pilot plant scale.

引用

页数：10

共 95 条

[81] Removal of selected pharmaceuticals from domestic wastewater in an activated sludge system followed by a horizontal subsurface flow bed - Analysis of their respective contributions [J].