Revenues received by the 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 acquired by the county with the proceeds of obligations funded by tax increment allocation financing shall be deposited by the county in the special tax allocation fund.