Elimination of zinc from roof runoff through geotextile and clinoptilolite filters

Konstantinos Athanasiadis, Brigitte Helmreich, Peter A. Wilderer

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Direct infiltration of roof runoff into the ground may pose a potential risk of soil and ground-water contamination. The performance of two different barrier materials for the retention of zinc from roof runoff of an eleven year old zinc roof was examined in a field study. As barrier materials geotextile and clinoptilolite were applied. Automatic samplers were used to take samples both at the inlet and at the outlet of the retention facility. Samples of twenty rain events were examined. Zinc was detected in the roof runoff in concentrations of up to 25 mg/L, and lead which originates from the tin-solder was present in concentrations of up to 84 μg/L. Under most circumstances, a first flush could be observed for the analysed substances. No retention of heavy metals was observed, where only geotextile was used as a barrier material. The clinoptilolite filter was able to adsorb up to 97% of zinc from the roof runoff.

Original languageEnglish
Pages (from-to)419-428
Number of pages10
JournalActa Hydrochimica et Hydrobiologica
Volume32
Issue number6
DOIs
StatePublished - Jan 2005

Keywords

  • First flush
  • Infiltration

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