On an academic basis, most ...

On an academic basis, most of these scrape farms in dairies have very high ammonia, usually in the 6000 to 9000 ppm range.  this of course is not easy to treat biologically.   But with the right kind of geobacters, you can get rid of the ammonia.  and treat biologically till water is reusable to washing or even raising fish.   

With a Biocleaner and  ponds and fish , you can eliminate odor, sludge, BOD, COD, TSS, tn , tp and ammonia, All with minimal power cost.