Helium and oxygen tanks cannot be recycled in your curbside recycling and they are hazardous when placed in the trash. 

Check with your medical equipment supplier to see if they have a take-back or exchange program for the oxygen tank. Medical supply companies will accept an oxygen tank if you purchased the tank from them.

Recycle at a local scrap metal yard (you may earn a rebate) or contact AAA Gas Supply (216.228.4800) or Air Gas Great Lakes (216.241.1696) for recycling options. 

If all recycling options have been exhausted, helium and oxygen tanks from a household can be disposed through the District's Household Hazardous Waste Disposal Program.