The biofiltration process by the bivalve D. polymorpha for the removal of some pharmaceuticals and drugs of abuse from civil wastewaters

Andrea Binelli, Stefano Magni, Carlo Soave, Francesca Marazzi, Ettore Zuccato, Sara Castiglioni, Marco Parolini, Valeria Mezzanotte

Research output: Contribution to journalArticlepeer-review

Abstract

This study shows the evaluation of the possible use of the freshwater bivalve Dreissena polymorpha for the removal of some recalcitrant contaminants, namely many pharmaceuticals and drugs of abuse that are not sufficiently removed from civil wastewaters. This mollusk has an enormous filtering capability and is highly resistant to natural and anthropogenic stresses and to a significant bioaccumulation of lipophilic contaminants. All these characteristics may be particularly useful for the removal of compounds not easily eliminated by conventional wastewater treatment processes. To verify this hypothesis an experimental study was conducted at the pilot scale using a pilot plant installed in the largest wastewater treatment plant of Milan (Milano-Nosedo, Italy). First, we presented results obtained in several preliminary tests in order to evaluate the capability of zebra mussel specimens to survive in different wastewater mixtures, its filtering capacity and the possible influence of bio- and photo-degradation in the abatement of the molecules of interest. Finally, data obtained in the final tests demonstrated a capacity of this filter-feeder to reduce the concentrations of several pharmaceuticals and drugs of abuse higher than that obtained by the simple natural sedimentation, suggesting a possible implementation of the bio-filtration process in wastewater management.

Original languageEnglish
Pages (from-to)710-721
Number of pages12
JournalEcological Engineering
Volume71
DOIs
Publication statusPublished - Oct 1 2014

Keywords

  • Bio-filtration
  • Illicit drugs
  • Pharmaceuticals
  • Wastewater treatment
  • Zebra mussel

ASJC Scopus subject areas

  • Environmental Engineering
  • Management, Monitoring, Policy and Law
  • Nature and Landscape Conservation

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