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Okaloosa County conducting open-channel aeration at closed landfills to reduce dissolved iron in groundwater
Summary
Okaloosa County says it is using an open-channel aeration system at three landfills closed more than 30 years ago to oxidize and remove naturally occurring dissolved iron from groundwater to comply with the Florida Department of Environmental Protection.
Okaloosa County is conducting an open-channel aeration remediation at three landfills that have been closed for more than 30 years to reduce excessive dissolved iron in groundwater and remain in compliance with the Florida Department of Environmental Protection, county staff said.
County solid waste staff said the open-channel aeration system is designed to increase oxygen exposure to extracted groundwater so dissolved iron oxidizes and precipitates out of the water. The system includes a trench lined with a Smart Ditch product and a high-strength corrugated plastic liner; corrugations in the Smart Ditch increase oxygen contact with the water. Treated water flows into a large treatment basin where the oxidized iron settles to the bottom for later removal, the statement said.
Officials emphasized that iron occurs naturally in the environment and that the process is intended to safeguard groundwater for future generations. The county said its solid waste team has monitored the three closed landfills for years and has removed any items identified by the Florida Department of Environmental Protection (FDEP).
The county provided a contact for more information: myokaloosa.com or Public Works at (850) 689-5772.
No formal vote or ordinance was recorded in the statement; the county described the remediation as an ongoing operational measure to meet FDEP requirements.
