【摘要】 获得亚硝酸盐的积累,可以从温度、pH、氨和溶解氧等多方面进行控制。亚硝酸盐积累最佳的温度为30～ 36℃;最佳pH控制在7．0～8．5。合适浓度的FA有助于亚硝酸盐的积累,但是,由于硝酸菌能够对FA产生的抑制作用逐渐适应,单纯靠增加FA浓度来实现硝酸盐的积累是不稳定的。一般认为控制亚硝酸盐积累的最佳的溶解氧浓度在1．0～1．5mg/L,而运行的高低DO浓度也有利于亚硝酸盐的积累。更多还原

【Abstract】 Nitrite accumulation can be controlled by temperature, pH, ammonium, dissolved oxygen, etc. The optimal temperature is 30～36℃, and the optimal pH is 7.0～8.5. Suitable concentration of FA will be good for nitrite accumulation. However ,as nitrobacteria can gradually adapt the inhibition caused by FA, however, it is not stable enough to achieve nitrite accumulation merely depending on the increase of FA concentration. Generally, the optimal dissolved oxygen concentration for nitrite accumulation should be controlled in 1.0～1.5mg/ L, while alternating the concentration also can achieve it.更多还原