Reduction of sludge production and recycled nutrients loading by high-rate aerobic digestion(CaviTec II) with inorganic sludge separation and sludge solubilization
The performance of the new aerobic digestion system combined with inorganic sludge separation unit and sludge solubilization unit, CaviTec II, is evaluated. Anaerobic digester effluent sludge is used for feed sludge of CaviTec II system. By addition of CaviTec II, the amount of cake generated is reduced by 27%, and the soluble nitrogen is reduced by 92%.