水窖底泥中氨氮释放动力学模拟  

Kinetics Simulation of Ammonia Nitrogen Release in Cistern Sediment

作　　者：慕娅婷 张国珍[1] 张国科[1] 马可[1] 王梦茹[1] 

机构地区：[1]兰州交通大学环境与市政工程学院,甘肃兰州730070

出　　处：《兰州石化职业技术学院学报》2015年第1期23-26,共4页Journal of Lanzhou Petrochemical Polytechnic

基　　金：国家自然科学基金(51068014);长江学者和创新团队发展计划资助项目(IRT0966)

摘　　要：在不同温度和振荡速度的影响下,水窖底泥中氨氮解吸至上覆水中,会对上覆水造成影响。通过实验分析并探讨了温度和振荡速度对水窖底泥中氨氮释放的影响并进行动力学模拟。实验结果表明：温度和振荡速度增大能够促进水窖底泥中氨氮释放,且氨氮解吸平衡浓度增大;通过准一级动力学方程和准二级动力学方程拟合,两种动力学方程对氨氮释放过程的拟合效果较为接近,且温度影响下两种动力学拟合效果较振荡速度影响好一些（不同温度下其氨氮释放动力学拟合R2在0.91~0.97,而振荡速度R20.72~0.94）;因此,窖水的水质可能受到上述因素的影响。实验结果可为窖水水质维护,窖水水质处理等提供理论依据。In different conditions of the temperature and disturbance degree（ concussion rate）,ammonia nitrogen in cistern sediment are easy to release to the overlying water and influence the quality of water. The test analyzes and discusses the influences of the temperature and disturbance degree on the ammonia nitrogen release and then makes the kinetic simulation. The results of experiment showed that higher temperature and disturbance degree could promote ammonia nitrogen release in cistern sediment and increase the concentration; Combining first and second order kinetics simulation shows that the two simulation effects are approximate,and temperature factor has a better fitting effect than the disturbance degree（ the ammonia and nitrogen kinetic fitting R2 is 0. 91 ~ 0. 97,while disturbance degrees R2 is 0. 72 ~ 0. 94 at different temperatures）; the cistern water quality can be affected by the above factors. Furthermore,the experiment result can be used in cistern water maintenance and treatment.

关 键 词：水窖底泥 氨氮 温度 振荡速度 动力学模拟 

分 类 号：X52[环境科学与工程—环境工程]