process and plant for the removal of ammonia / ammonium in wastewater by map precipitation

摘要

A process and a plant for the removal of ammonium and/or ammonia in wastewaters, are based on the capture of ammonium and/or ammonia present in wastewaters through precipitation of Magnesium Ammonium Phosphate (MAP) by addition of magnesium and phosphorous salts to the wastewaters; the separation of the precipitate from the treated wastewaters; the decomposition of the precipitate in order to recover the energy content of the ammonia removed and recover the magnesium and phosphorous salts previously used; the recycling of the magnesium and phosphorous salts for a new MAP precipitation cycle as reported; and they account for the at least partial conversion of the ammonium and/or ammonia released within the decomposition process into hydrogen and nitrogen by molecular cleavage.