Hey Hatem, Try looking up a ...
Published by Mark Milne, Wastewater Superintendent
Hey Hatem,
Try looking up a Bio-filter. Have seen them as in vessel and static pile. Kind of like using a compost pile as an air filter. Have seen them work on ATAD process gas which is high in redused sulfur.
These things can be as simple as a blower, perforated pipe, and look like a raised flower bed.