I have a client, that haves a primitive made oven to make fish meal. It's basically a fan with a heater, that injects air at 190 F to dry mostly stale fish to get fish meal.

There is an exhaust of 300 CFM with horrible odor, don't know the concentrations.

Which technology will be suited for odor suprression? Activated Carbon, ozone, biological filter or other?

I suppose activated carbon is the one, but how many pounds of it...

Many thanks!