Possible Ammonia Scrubber Application

[bif]

I am looking at the need for an ammonia scrubber on a dilution tank. We currently recieve 33.5% aq ammonia from tanker to a pressurised storage unit. During delivery, the vent stack goes through a scrubbing unit.
From this tank, we transfer and dilute in an atmospheric day tank down to 5% aq ammonia (dilute tank capacity 5m³). This tank is outside and only filled ~once per week.
Currently, the vent from this tank goes directly to atmosphere. I cannot find any legislation as to whether or not I need to scrub the gases from this tank.

Additionally, if I do need to scrub the gas from the tank, what concentration should I use for the vented gas that is displaced during filling and what concentration do I need to reduce the Ammonia to?

 

[EGT01]

You may want to check with your state or local environmental agency. Though I can't say I have experience with permitting for ammonia, Louisiana apparently does have regulations for ammonia, other states may as well.

http://www.deq.state.la.us/permits/air/atoxfact.htm