Revenues received by a county from any property, building or facility owned, leased or operated by the county or any agency or authority established by the county may be used to pay economic development project costs, or reduce outstanding obligations of the county incurred under this Act for economic development project costs. The county may place those revenues in the special tax allocation fund which shall be held by the county treasurer or other person designated by the county. Revenue received by the county from the sale or other disposition of real property or personal property or rights or interests therein acquired by the county with the proceeds of obligations funded by property tax allocation financing shall be deposited by the county in the special tax allocation fund.