Research Article
Effect of Free Ammonia, Free Nitrous Acid, and Alkalinity on the Partial Nitrification of Pretreated Pig Slurry, Using an Alternating Oxic/Anoxic SBR
Figure 2
Evolution of nitrogen compounds. (a) Behavior of nitrogen concentration inside the reactor: -N influent (diamond), -N effluent (square), -N effluent (triangle), and -N effluent (circle). (b) Nitrite accumulation ratios (NAR) as percentages obtained at different HNO2-N (asterisk) and NH3-N (circle) concentrations. (c) Nitrite accumulation ratios (NAR) as percentages obtained at different total alkalinity influent (diamond) concentrations.
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