Patent ID: 8747672
Filing Date: 2014-06-10
Classification: C01B,C02F,C12M,C12P,Y02W

Abstract:
1. A method for producing inorganic phosphorus from wastewater, comprising: (a) thickening a phosphorus- and magnesium-containing mixture derived from microorganisms induced to release phosphorus and magnesium to provide a phosphorus- and magnesium-rich liquid and a phosphorus- and magnesium-reduced mixture; (b) conducting the phosphorus- and magnesium-rich liquid to a first inorganic phosphorus reactor; (c) anaerobically treating the phosphorus- and magnesium-reduced mixture to provide an ammonia-rich, phosphorus- and magnesium-reduced mixture; (d) separating a first ammonia-rich, phosphorus- and magnesium-reduced liquid from the ammonia-rich, phosphorus- and magnesium-reduced mixture; (e) conducting the first ammonia-rich, phosphorus- and magnesium-reduced liquid to a second inorganic phosphorus reactor to provide inorganic phosphorus and a second ammonia-rich, phosphorus- and magnesium-reduced liquid; and (f) adding ammonia to the phosphorus- and magnesium-rich liquid in the first inorganic phosphorus reactor to provide inorganic phosphorus.