Slashing Recycled Ammonia Loads From Dewatering Sidestreams

Recycling is generally considered a positive thing, except when the sidestream discharge from the dewatering of anaerobic digested sludge can recycle up to 40 percent of the total nitrogen or ammonia load in the original flow back to the head of the wastewater treatment stream. Deammonification technology using anaerobic ammonium oxidation/anammox bacteria offers a cost-effective way to break that vicious cycle and meet regulatory discharge limits.