METHOD FOR REMOVING HIGH CONCENTRATION OF NITROGEN FROM ANAEROBICT-TREATED WASTEWATER AND APPARATUS FOR IMPLEMENTING THE METHOD

摘要

The present invention relates to a method and apparatus for removing nitrogen at high concentration in anaerobic treated water. The nitrogen removal method according to the present invention comprises the steps of partial nitrification of anaerobic treated water; adjusting the mixed nitrogen of the treated water so that nitrite and ammonia nitrogen can be mixed in an appropriate ratio after the partial nitrous oxidation; And upstream denitrification of the mixed nitrogen-adjusted treated water without an external carbon source, and the nitrogen removal apparatus according to the present invention further comprises a partial nitrous oxide tank, a mixed nitrogen solution adjusting tank, and an upstream denitrification tank performing the respective steps. Include. The high concentration nitrogen removal method and apparatus for anaerobic treated water according to the present invention require only 3/8 of oxygen as compared to the nitrification / denitrification process, which is a general nitrogen removal process, and the denitrification process is performed without an external carbon source, resulting in significant facility and operation costs. Is reduced.;Anaerobic, Denitrification, Partial Nitrification