Comparison between two anammox fiber fillers under load impact and the effect of HCO concentration.

Based on the establishment of a stable anaerobic ammonia oxidation treatment system in 100 days, the impact resistances of two different anammox fiber fillers (the curtain filler: R1 and the bundle filler: BR) were compared. Furthermore, the effect of HCO concentration on the bundle filler system was also investigated, the results have shown that the activity of the two anammox fiber fillers was not inhibited when the NO -N concentration was lower than 750 mg L (FNA = 0.085 mg L), while it was significantly suppressed at 900 mg L (FNA = 0.