Transport Of Heavy-Metals Through Accumulated Sediments In Wet Ponds
Abbreviated Journal Title
Sci. Total Environ.
HIGHWAY RUNOFF; DETENTION PONDS; BOTTOM SEDIMENTS; METAL ACCUMULATION; METAL TRANSPORT; Environmental Sciences
Nine detention ponds in Florida were selected to investigate heavy-metal accumulation in their bottom sediments. Core sediment samples were collected from each pond, frozen and divided into six layers. The total metal content and extractable metal by toxicity characteristic leaching procedure (TCLP) were determined for each sediment layer in each pond. The fractions of extractable metals using TCLP exhibited an exponential decline with increasing fine particles (less than 0.062 mm diameter) and organic content. Most of these metals are tightly bound to the bottom sediments, and their transport is very slow. It is feasible to remove the accumulated sediments saturated with metals from the bottom of the ponds for periodic maintenance at relatively long periods, averaging 25 years, to avoid seepage and potential contamination of groundwater beneath the pond.
Science of the Total Environment
Article; Proceedings Paper
"Transport Of Heavy-Metals Through Accumulated Sediments In Wet Ponds" (1995). Faculty Bibliography 1990s. 1248.