Enhanced Removal of Contaminants of Emerging Concern through Hydraulic Adjustments in Soil Aquifer Treatment
| Autor: | Sallwey, Jana, Jurado, Anna, Barquero, Felix, Fahl, Jens |
|---|---|
| Přispěvatelé: | Federal Ministry of Food and Agriculture (Germany), Ministry of Science, Technology and Space (Israel), Dresden University of Technology |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
lcsh:TD201-500
lcsh:Hydraulic engineering hydraulic loading cycles Soil aquifer treatment Vadose zone wastewater reuse Wastewater reuse Removal efficiency soil aquifer treatment infiltration experiments removal efficiency Contaminants of emerging concern vadose zone lcsh:Water supply for domestic and industrial purposes Hydraulic loading cycles lcsh:TC1-978 contaminants of emerging concern Infiltration experiments |
| Zdroj: | Water Volume 12 Issue 9 Water, Vol 12, Iss 2627, p 2627 (2020) Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 2073-4441 |
| DOI: | 10.3390/w12092627 |
| Popis: | © 2020 by the authors. Water reclamation through the use of soil aquifer treatment (SAT) is a sustainable water management technique with high potential for application in many regions worldwide. However, the fate of contaminants of emerging concern (CECs) during the infiltration of treated wastewater during SAT is still a matter of research. This study investigates the removal capacity of 27 CECs during SAT by means of infiltration experiments into a 6 m soil column. Additionally, the influence of the hydraulic operation of SAT systems on the removal of CECs is investigated by changing the wetting and drying cycle lengths. Sixteen out of 27 CECs are efficiently removed during SAT under various operational modes, e.g., bezafibrate, diclofenac and valsartan. For six substances (4-methylbenzotriazole, amidotrizoic acid, benzotriazole, candesartan, hydrochlorothiazide and sulfamethoxazole), removal increased with longer drying times. Removal of amidotrizoic acid and benzotriazole increased by 85% when the drying cycle was changed from 100 to 444 min. For candesartan and hydrochlorothiazide, removal improved by 35%, and for 4-methylbenzotriazole and sulfamethoxazole, by 57% and 39%, respectively. Thus, enhanced aeration of the vadose soil zone through prolonged drying times can be a suitable technique to increase the removal of CECs during SAT. This work is financed within the framework of the German—Israeli Water Technology Cooperation Program under project numbers 02WA1148 and WT1601/2689 by the German Federal Ministry of Education and Research (BMBF) and the Israeli Ministry of Science, Technology and Space (MOST). A.J. gratefully acknowledges the financial support from the Excellence Initiative of the German Federal and State Governments through the “Open Topic Postdoc Position” Fellow at the Technische Universität Dresden. APCs were funded by open access funding by the Publication Funds of the TU Dresden. |
| Databáze: | OpenAIRE |
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