METHOD FOR INCREASED PHOSPHORUS RECOVERY FROM ORGANIC RESIDUES

摘要

The invention relates to a method for recovering organic and inorganic phosphorous compounds from solid components of organic residues. The method consists of the following steps: the organic residues are separated in a first solid phase and a first liquid phase; the first solid phase is mixed with the treatment water to form a solution; bivalent ions contained in the solution are converted into difficult to dissolve or complexed chemical compounds: organic phosphorous compounds are enzymatically reacted to form inorganic phosphates; the solution is separated in a second solid phase and a second liquid phase; the inorganic phosphate is recovered or separated from the second liquid phase; ammonium salts are recovered or separated from the second liquid phase; bivalent ions obtained in the first liquid phase are separated in the form of salts; the second solid phase is dried; the second phase is mixed and pelletized with phosphate salts, ammonium salts and salts of the bivalent ions which are obtained in the previous deposition processes.