METHOD TO REMOVE NITROGEN AND PHOSPHOR SIMULTANEOUSLY FROM WASTE WATER

摘要

PROBLEM TO BE SOLVED: To remove nitrogen and phosphor simultaneously from waste water. SOLUTION: This waste water treatment method to remove nitrogen and phosphor simultaneously from waste water is characterized by the denitrification by obligate chemolithoautotrophs, facultative chemolithoautotrophs, and chemolithoheterotrophs by charging external carbon resources in the one third to half of the required amount for the denitrification by chemolithoheterotrophs along with sulfur particles into a sulfur denitrification tank, and in the meantime characterized by the dephosphorization and the supply of alkalinity consumed in the denitrification process by charging shells and/or steel making slag.