Ammonia is a prevalent contaminant and issue in water reuse. Since ammonia exhibits decreasing dissociation with increasing pH, operation of cooling systems at high pH is effective in improving corrosion control, biocide demand and overall system performance. Polyamino polyether methylene phosphate based programs for high pH conditions provided
scale and corrosion control at very high levels of ammonia contamination at a northern steel mill.
Keywords: water reuse, reclaimed water, ammonia, high pH operation, polyamino polyether methylene phosphonate, corrosion control, biological control, chlorine, bromine, inorganic phosphates