| 摘要 |
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. |
