Abstract：The effects of sludge cultivation were investigated under the conditions of anaerobic-anoxic (instantaneous nitrite dosing), anaerobic-anoxic-aerobic (instantaneous nitrite dosing), anaerobic-aerobic + anaerobic-anoxic-aerobic (instantaneous nitrite dosing), and anaerobic-aerobic + anaerobic-anoxic-aerobic (continuous nitrite dosing) using nitrite as electron acceptor applied a sequencing batch reactor (SBR) for 14 days. Sludge cultivated by the method of anaerobic-aerobic + anaerobic-anoxic-aerobic (continuous nitrite dosing) could tolerate the maximum initial nitrite concentration 80 mg/L and the highest phosphate uptake rate 14 mgP/(gVSS·h). The nitrite dosage under this condition was also needed less than others. Therefore this could be a proper way for fast cultivation of denitrifying phosphorus removal sludge using nitrite as electron acceptor.
