Wang, Jianfang Rapid start-up of a nitritation granular reactor using activated sludge as inoculum at the influent organics/ammonium mass ratio of 2/1. [electronic resource] - Bioresource technology May 2018 - 170-177 p. digital Publication Type: Journal Article ISSN: 1873-2976 Standard No.: 10.1016/j.biortech.2018.02.017 doi Subjects--Topical Terms: AmmoniaAmmonium CompoundsBioreactorsNitritesNitrogenSewage