Modified biological filter bed - used for removing nitrogen compounds from waste water

摘要

Modified biological filter bed is used for removing N cpds. from wastewater. Filter bed is either fitted with roof or the air inlets are sealed, so that air cannot enter bed. In particular, bed treat removes nitrites and nitrates through the process of biochemical denitrification. ADVANTAGE - Existing conventional filter bed can be modified and used for denitrification. N cpds. are converted to N2 or N2O.