摘要
在中温（35±1）℃条件下，以葡萄糖为有机碳源，研究氨氮对IC厌氧反应器运行的影响。实验结果表明，氨氮浓度超过3036mg／L时对反应器的运行有抑制作用，随着氨氮浓度的增加，抑制作用更加明显，氨氮对系统的IC50为4500mg／L；系统运行过程中VFA低于400mg／L，pH值和碱度分别维持在7．21～7．62之间和2356～3065mg／L之间；反应器对氨氮的平均去除率为12．67％。在毒性恢复实验中，7d后COD去除率恢复到93．01％；恢复期系统VFA逐渐降低，从第6d开始维持在152～162mg／L之间；出水碱度和pH值维持在1769～2298mg／L和7．09～7．27之间，系统运行稳定。
The effect of ammonium on the running of internal circulation reactor was studied taking glucose as organic carbon source under mesophilic conditions（35 ± 1 ）℃. The experimental results showed that when the concentration of ammonium was higher than 3 036 mg/L, the running of IC reactor was inhibited, the corresponding IC50 was 4 500 mg/L, and the effect of inhibition became evident with the concentration of ammonium increasing. During the whole operation, VFA of effluent was lower than 400 mg/L, pH and alkalinity were stabilized at 7.21 -7.62, 2 356 -3 065 mg/L, respectively. The average removal rate of ammonium was 12.67%. In the toxicity recovery experiment, the removal rate of COD was recuperated to 93.01% after 7 days, and during the period of recuperation, the VFA of system was gradually reduced and stabilized at 152 - 162 mg/L from the sixth day, the alkalinity and pH were also stabilized at 1 769 - 2 298 mg/L, 7.09 - 7.27, respectively. The whole system run stably.
出处
《环境工程学报》
CAS
CSCD
北大核心
2008年第4期498-501,共4页
Chinese Journal of Environmental Engineering
关键词
氨氮
IC反应器
运行特性
ammonium
internal circulation reactor
operation characteristic
