There may be a lot of cell ...

There may be a lot of cell matter, which, although biodegradable, may be removable using a DAF.  This may remove some BOD and allow pH correction.  As a microbiologist one of the first materials I used to grow bacteria on was yeast extract.  There may well be a high ammonia level, therefor a strictly aerobic system would be required.  Ammonia oxidiation is carried out by ammonia oxidising bacteria, which is a two stage process , which requires specific bacteria and may need biocarbonate added to the effluent as a source of carbon.  Anaerobic digestion of ammonia is not good nor will it remove any phosphate present.  The aerobic system will settle using a settlement tank and the water could be put for further treatment if re-cycling is required, but that will depend on the salt content of the water.