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Method for Phosphorus Removal and Recovery from Municipal Wastewater

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Background: Phosphorus is a key nutrient that causes eutrophication in aquatic water systems and must be removed from wastewater. On the other hand it is also an important non-renewable resource present as phosphate rocks that could be exhausted in 100-250 years. Hence it is of great value if the phosphorus in wastewater can be removed and recovered for use as an alternative source of phosphorus from phosphate rocks. Technology Description: This technology relates to a novel combination of processes to overcome problems inherent in chemical precipitation and enhanced biological removal for phosphorus removal and recovery. The process can remove up to 99% phosphorus present in municipal wastewater livestock wastewater anaerobic sludge digestion supernatant and some industry effluents. The phosphorus recovery products contain up to 10%w/w phosphorus and can be directly applied as fertilizer. Applications: 1) Phosphorus removal and recovery 2) Wastewater treatment Patent Status: Patent Pending Opportunity for collaboration: Partnership for future development


1) Up to 99% removal of phosphorus from municipal wastewater 2) No biological activity involved for phosphorus removal and recovery 3) Less excess sludge produced 4) Co-recovery of Mg2+ K+ and NH4+ 5) No additions of Ca2+ Mg2+ K+ and NH4+ salt solutions are required

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Patent Pending Opportunity for collaboration: Partnership for future development