全程自养脱氨氮悬浮填料床反应器性能的研究

Study on the Character of Carrier-suspendeng Bed Reactor for Autotrophic Ammonia Removal

以NH4+-N溶液为基质建立和启运了全程自养脱氨氮悬浮填料床反应器,反应器连续运行的实验结果表明:在pH为8.0～8.5、溶解氧为0.7～1.0mg/L和温度为28℃的条件下。当氨氮表面负荷为2～2.5g/(m2·d)时,其表面去除速率为1.1～1.3g/(m2·d),全程自养脱氮率基本稳定在55％左右;全程自养脱氮的最适pH范围为7.5～8.5,其中最佳pH为8.0左右;最适溶解氧范围为0.5～1.5mg/L,其中尤以0.8～1.0mg/L左右为最佳。

Establishment and start-up of carrier-suspending bed reactor for autotrophic ammonia removal have been carried out by using NH3-N solution as substrate. The continuous operation of the reactor showed the following results: Under the conditions of pH 8.0 - 8.5, DO 0.7 - 1.0mg/L and temperature 28℃, when the surface ammonia loading rate was about 2 -2.5 g NH4+-N/m2.d, the surface ammonia removal rate coud reach 1.1 - 1.3g NH4+-N/m2.d and the autotrophic ammonia removal efficiency remained about 55%. The suitable pH range and the optimum pH for autotrophic ammonia removal of the reactor was 7.5 - 8.5 and about 8.0 respectively. The suitable dissolved oxygen (DO) range and the optimum DO range for autotrophic ammonia removal of the reactor was 0.5- 1.5mg/L and 0.8 - 1.0/mg/L respectively.