The fate of organic micropollutants during long-term/long-distance river bank filtration

Enrico Hamann, Pieter J. Stuyfzand, Janek Greskowiak, Harrie Timmer, Gudrun Massmann

Research output: Contribution to journalArticleScientificpeer-review

50 Citations (Scopus)

Abstract

The fate of organic micropollutants during long-term/long-distance river bank filtration (RBF) at a temporal scale of several years was investigated along a row of monitoring wells perpendicular to the Lek River (the Netherlands). Out of 247 compounds, which were irregularly analyzed in the period 1999-2013, only 15 were detected in both the river and river bank observation wells. Out of these, 10 compounds (1,4-dioxan, 1,5-naphthalene disulfonate (1,5-NDS), 2-amino-1,5-NDS, 3-amino-1,5-NDS, AOX, carbamazepine, EDTA, MTBE, toluene and triphenylphosphine oxide) showed fully persistent behavior (showing no concentration decrease at all), even after 3.6 years transit time. The remaining 5 compounds (1,3,5-naphthalene trisulfonate (1,3,5-NTS), 1,3,6-NTS, diglyme, iopamidol, triglyme) were partially removed. Their reactive transport parameters (removal rate constants/half-lives, retardation coefficients) were inferred from numerical modeling. In addition, maximum half-lives for 14 of the fully removed compounds, for which the data availability was sufficient to deduce 100% removal during sub-surface passage, were approximated based on travel times to the nearest well. The study is one of very few reporting on the long-term field-scale behavior of organic micropollutants. It highlights the efficiency of RBF for water quality improvement as a pre-treatment step for drinking water production. However, it also shows the very persistent behavior of various compounds in groundwater.

Original languageEnglish
Pages (from-to)629-640
Number of pages12
JournalScience of the Total Environment
Volume545-546
DOIs
Publication statusPublished - 1 Mar 2016

Keywords

  • Degradation
  • Long-term behavior
  • Numerical modeling
  • Organic micropollutants
  • Removal
  • River bank filtration

Fingerprint Dive into the research topics of 'The fate of organic micropollutants during long-term/long-distance river bank filtration'. Together they form a unique fingerprint.

  • Cite this