This is a new one on me, I am not sure how this would work and am concerned on two fronts. This sounds like it would be considered a water/waste treatment system; if a water treatment then will the resulting water be clean enough to discharge and to where, a direct discharge or POTW? Ammonia discharge limitations are usually quite stringent as fish don't like it plus it is a pollutant of concern. This would also involve monitoring of the treatment system by a qualified individual along with permitting. If this is considered a waste treatment system then this opens up a can of worms and I will leave this to Maria for comment. I think we would need more details on the entire process to be able to determine if this is workable.