Police officers look at a dismantled World War Two bomb found in Berlin on April 20, 2018. PHOTO: REUTERS
The shell was discovered during excavation work on part of the apron located "at a safe distance" from the terminal buildings, the airport said in a statement, meaning there was no danger to passengers and no disruption to flights.
Construction work was halted and a 100-metre (yards) safety perimeter put in place when the shell was found, the airport said.
WW2 bomb defused after massive evacuation in central Berlin
Belgium's military bomb disposal squad, known by the acronym DOVO, was called in to neutralise the device overnight.
"DOVO was able to dismantle the shell without having to detonate it. Brussels Airport wishes to thank DOVO and all services and partners involved for the good collaboration," it said.
Millions of shells and other munitions fell in Belgium during the First and Second World Wars and DOVO is regularly called out to deal with unexploded ordnance.
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