prohibit direct eductor to drain, Ammonia pumping out

[Hoon]

Good day, all.

We using ammonia refrigerant system.
Today when suddenly occur ammonia leak, I wondering about that direct eductor to drain or flume when pumping out from the freezer pipe.
That eductor is that using jest water pressure.
I don't know that how much coming the volume of eductor at once. depend on isolate plumb volume, estimate 1/2" 2 hour open water mix.
Here, Do I need to use some gathering tank for ammonia evaporate to atmosphere?
If you have any suggestion this it might help me. Many thanks.
Sorry for poor English.