Strikauska, Silvija; Zarina, Dzidra; Mutere, Olga; Viesturs, Uldis; Berzins, Andrejs (Universidade da Coruña, 2007)
[Abstract] An autotrophic ammonia-biodegrading PNNS association was isolated from the biological activated sludge of the fish factory wastewater treatment plant and used in the two-stage biofiltration system with the ammonia ...