DA NANG — An area of 29ha at Da Nang International Airport will be free from dioxin contamination by 2016, representatives from the Ministry of Defence of Viet Nam said at a workshop yesterday on environmental remediation.
"People should know about the dioxin contamination that remains at the airport from the American war," colonel Pham Dinh Chien from the Air Defence-Air Force said.
"There have been many discussions on dioxin contamination treatment at Da Nang airport by both Vietnamese and American experts and scientists. We finally agreed the solution of In-Pile Thermal Desorption (IPTD or thermal remediation) is the most suitable for the airport," he said
"It's the first time that thermal remediation technology has been used to deal with the airport's contamination. We will try our best to clean the land and environment," he said.
The five-year project aims to clean an estimated 73,000 cubic metres of contaminated soils and sediments at Da Nang Airport in central Viet Nam.
The contaminated soil and sediment will be piled and heated by 1,254 heating wells to a temperature of 335 degrees C.
They will then be excavated and hauled to a temporary containment structure built on a closed-off non-commercial area at the airport.
The treated soils and sediments will be removed from the containment structure, tested to ensure that they are no longer contaminated, and then used as filling material at the airport.
The Da Nang Airport is referred to as a dioxin "hot spot" by the Vietnamese Government due to the high levels of dioxin in the soils and sediments.
The Ministry of National Defence and the US Agency for International Development (USAID) are working together to implement the project.
A ground breaking ceremony for the US$43 million project will be held at the airport today. — VNS