For odor control, I think you have a couple options:
1. Aerate the EQ. There are lots of products out there for this, and if you're interested I can send you several different contacts.
2. Cover the EQ, and treat the offgas with an odor scrubber.
If the influent is pretty stinky, you won't completely eliminate odors if you aerate. The odors are coming from anaerobic biological activity producing methane and hydrogen sulfide.
Where does the water go after it leaves the EQ?