This paper discussed the start-up of the nitritation matched with ANAMMOX which was accomplished in a continuously stirred tank reactor （CSTR）. Several parameters which included HRT

DO

pH and inorganic carbon source was studied to evaluate their effects in the influent with high strength ammonium. The results of experiences indicated that start-up of the nitritation process was relatively fast

the ability of resistance to load impact was strong after start-up. The result1which DO in the range of 0.5 and 1.0 mg L-1

pH from 7.0 to 7.9 is advantage to achieving the nitritation matched with ANAMMOX effectively.