Research Article

Keeping a Completely Autotrophic Nitrogen Removal over Nitrite System Effective in Treating Low Ammonium Wastewater by Adopting an Alternative Low and High Ammonium Influent Regime

Figure 1

Profiles of nitrogen compounds (expressed as influent ammonium concentration, effluent ammonium concentration, effluent nitrite concentration, and effluent nitrate concentration), total nitrogen removal rate (TNRR), and total nitrogen removal efficiency (TNRE) of the CANON system over 285 days of operation.