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Nutrient enrichment of the anaerobic sludge by Co-precipitating N and P in the mesophilic anaerobic digester
(2013) Uludag-Demirer, S.; Duran, M.; Demirer, G.N.
Copper One of the techniques used for the stabilization of sewage sludge is anaerobic digestion. The effluent from anaerobic digesters usually requires further treatment since they contain high concentrations of N and P as a result of volatile solids destruction. In this study, a control was developed over the nutrient ions within the anaerobic digester by using substrate with high concentration of Mg2+ ion. The amount of Mg2+ ion added was determined based on the release rate of N and composition of magnesium ammonium phosphate. The results showed 50% removal of NH4+ and PO43- can be achieved without compromising the performance of the reactor in COD and ySS removal and biogas formation.