The present invention is in the field of a method for recovery of phosphorous, in particular of phosphorous from a waste stream, and to a product obtained thereby. The product is preferably in a form wherein phosphorous can be released to e.g. the soil and plants at a desired amount per interval of time.
A method for recovery of phosphorous, in particular of phosphorous from a waste stream, and a product obtained thereby. The product is in a form wherein phosphorous can be released to, e.g., the soil and plants at a desired amount per interval of time.
C02F 1/00 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout
C02F 1/38 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par séparation centrifuge
C02F 1/42 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par échange d'ions
C02F 5/06 - Adoucissement de l'eau par précipitation des substances qui rendent l'eau dure en utilisant des composés du calcium
C02F 11/127 - Traitement des boues d'égoutDispositifs à cet effet par déshydratation, séchage ou épaississement par déshydratation mécanique par centrifugation
The present invention is in the field of a (semi)continuous improved method for recovery of phosphorous, in particular of phosphorous from a waste stream, and to a product obtained thereby. The product is in a form wherein phosphorous can be released to e.g. the soil and plants at a desired amount per interval of time. The method of recovering phosphorous from an aqueous solution comprising the steps of providing the aqueous solution comprising soluble phosphorous, adding a composition, the composition comprising as mixed ingredients 5-40% CaO (w/w, relative to a total weight of the composition), 10-40% clay mineral, and 20-60% CaC03, wherein 0.5-2 mole CaO/mole soluble P is added, and recovering the phosphorous.
The present invention is in the field of a (semi)continuous improved method for recovery of phosphorous, in particular of phosphorous from a waste stream, and to a product obtained thereby. The product is in a form wherein phosphorous can be released to e.g. the soil and plants at a desired amount per interval of time. The method of recovering phosphorous from an aqueous solution comprising the steps of providing the aqueous solution comprising soluble phosphorous, adding a composition, the composition comprising as mixed ingredients 5-40% CaO (w/w, relative to a total weight of the composition), 10-40% clay mineral, and 20-60% CaC03, wherein 0.5-2 mole CaO/mole soluble P is added, and recovering the phosphorous.
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