A method for production of ammonium phosphates, comprising the steps of: providing a phosphorus-loaded water immiscible liquid phase; adding anhydrous ammonia to said phosphorus-loaded water immiscible liquid phase; precipitating at least one of mono-ammonium phosphate and di-ammonium phosphate from said water immiscible liquid phase; controlling a temperature of the water immiscible liquid phase during said steps of adding and precipitating to a predetermined temperature interval; extracting said precipitated at least one of mono-ammonium phosphate and di-ammonium phosphate from said water immiscible liquid phase; washing crystals of said extracted precipitated at least one of mono-ammonium phosphate and di-ammonium phosphate; and drying said washed crystals, characterised in that said step of washing crystals comprises washing away residual water immiscible liquid phase from said crystals of said extracted precipitated at least one of mono-ammonium phosphate and di-ammonium phosphate with a wash solution comprising saturated aqueous solution of ammonium phosphate; and by the further steps of: separating said residual water immiscible liquid phase washed from said crystals from said wash solution by phase separation of said residual water immiscible liquid phase washed from said crystals of said extracted precipitated at least one of mono-ammonium phosphate and di-ammonium phosphate and said wash solution; reusing said phase separated residual water immiscible liquid phase for further adsorbing of phosphorous to be reused for further extraction; and reusing washing liquid depleted from residual water immiscible liquid phase for further washing of crystals in said step of washing crystals of said extracted precipitated at least one of mono-ammonium phosphate and di-ammonium phosphate. providing a phosphorus-loaded water immiscible liquid phase; adding anhydrous ammonia to said phosphorus-loaded water immiscible liquid phase; precipitating at least one of mono-ammonium phosphate and di-ammonium phosphate from said water immiscible liquid phase; controlling a temperature of the water immiscible liquid phase during said steps of adding and precipitating to a predetermined temperature interval; extracting said precipitated at least one of mono-ammonium phosphate and di-ammonium phosphate from said water immiscible liquid phase; washing crystals of said extracted precipitated at least one of mono-ammonium phosphate and di-ammonium phosphate; and drying said washed crystals, separating said residual water immiscible liquid phase washed from said crystals from said wash solution by phase separation of said residual water immiscible liquid phase washed from said crystals of said extracted precipitated at least one of mono-ammonium phosphate and di-ammonium phosphate and said wash solution; reusing said phase separated residual water immiscible liquid phase for further adsorbing of phosphorous to be reused for further extraction; and reusing washing liquid depleted from residual water immiscible liquid phase for further washing of crystals in said step of washing crystals of said extracted precipitated at least one of mono-ammonium phosphate and di-ammonium phosphate.