TABLE 1.

NO₂⁻/NH₃ consumption ratios in anammox reactors in the presence of NO₂ or NO

NOx concn (ppm)	NO2−/NH3 ratio in the presence of NO2	NO2−/NH3 ratio in the presence of NO
0	1.33	1.30
10	1.32	1.44
25	1.30	1.39
50	1.28	1.37
100	1.29	1.49
150	1.28	1.34
200	1.25	1.50
600	NDa	1.53
1,000	ND	2.58

^aND, not determined.