摘要
试验设计了一种新型的氨吹脱反应器,采用雾化喷头代替了传统的填料,废水经过加压雾化后与上升的气流逆向接触,通过增加接触面积达到提高去除率的目的。对气液传质过程作了合理假设,运用微分学等数学方法,得到氨吹脱过程的传质模型,讨论了模型中参数的影响因素,说明了去除率η随着pH和温度的提高、运行时间的延长、鼓风量的增大而增大,通过试验验证了使用这种新型的氨吹脱反应器来处理含高浓度氨氮的废水,在合适条件下,氨去除率高于85%。
A new ammonia evaporation column with sprayer replacing stuffing is designed,in which ammonia nitrogen waste water contacts uplifted airflow after atomized,and the purging efficiency of ammonia nitrogen is increased by increasing its interface.Reasonable hypotheses of the process are made,and a mass transfer model of ammonia removal process is obtained using differential calculus.the factors including pH,temperature,runtime and air feed which affect the purging efficiency of ammonia-nitrogen are discussed.The results showed the removal ratio of ammonia could be above 85% under proper conditions by using the new ammonia evaporation column.
出处
《现代化工》
CAS
CSCD
北大核心
2007年第z1期331-334,共4页
Modern Chemical Industry
关键词
蒸氨塔
吹脱法
含氨氮废水
传质模型
ammonia evaporation column
blow-denitrogenation
ammonia nitrogen waste water
mass transfer model
