After weeks of bickering over returning trash dumpsters to Zena, the Delaware County commissioners flirted on Monday with the idea of privatizing trash collection and doing away with the county’s solid-waste tax. Delaware County residents approved a half-cent sales tax in 1988 to help with solid-waste services. In 1994, the county commissioners set up the Solid Waste Trust Authority. The sales tax generates about $100,000 to $150,000 per month, officials said in earlier meetings. … The discussion comes on the heels of the Solid Waste Authority’s action in March to remove dumpsters and in their place establish “convenience sites,” or trash-collection sites. The removal of the dumpsters left Zena residents driving as far as 50 miles round trip to dispose of trash.