Lab experiments on hybridization of managed aquifer recharge with river water via sand column, pre-oxidation, and nanofiltration.
Chemosphere
; 287(Pt 3): 132350, 2022 Jan.
Article
em En
| MEDLINE
| ID: mdl-34582933
ABSTRACT
A hybridization of managed aquifer recharge (MAR) with pre-oxidation processes was conducted in this study to investigate changes in dissolved organic matter characteristics and the attenuation of selected trace organic contaminants (TrOCs). Potassium permanganate, chlorine, and ozone treatments were used for pre-oxidation, which effectively attenuated some TrOCs, particularly the combination of MAR with ozone achieved 84-99% attenuation. The pre-oxidation step using potassium permanganate showed high removal of carbamazepine (96%). Moreover, MAR was also combined with nanofiltration (NF) as a multi-barrier concept for the removal of persistent TrOCs after MAR. A short-chain polyfluoroalkyl substance (PFAS) was effectively removed after combining MAR columns with NF membranes. Thus, pre-oxidation coupled with MAR followed by NF could potentially enhance the removal of selected TrOCs.
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Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Poluentes Químicos da Água
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Água Subterrânea
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Purificação da Água
Idioma:
En
Ano de publicação:
2022
Tipo de documento:
Article