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TREATMENT OF DE-ICING CONTAMINATED SURFACE WATER RUNOFF ALONG AN AIRPORT RUNWAY USING IN-SITU SOIL ENRICHED WITH STRUCTURAL FILTER MATERIALS
Pressl, A., B. Pucher, B. Scharf, and G. Langergraber.
Science of the Total Environment 660:321-328(2019)

Column experiments at temperatures between 3-5°C were carried out to evaluate the potential of in situ soil and a soil-based filter containing zeolite and perlite as additional filter media to degrade high concentrations of pavement de-icing fluids in surface water runoff. The study aimed to determine degradation potential when using 50% in situ soil mixed with zeolite and perlite. Due to the low temperatures, available nutrients were a key factor for the total organic carbon (TOC)-degrading microorganisms. Overall TOC reduction rates were found from 76% up to 98%, with TOC effluent concentrations in the range of 18-870 mg/L, depending on the influent concentration. The experimental results indicate good potential for the use of a soil-based filter as a passive solution for the treatment of de-icing runoff.



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