摘要
针对垃圾渗滤液的特殊水质特点,研究了游离氨(FA)与游离亚硝酸(FNA)对A/O工艺短程硝化反硝化处理垃圾渗滤液脱氮效果的影响。试验结果表明,当初始氨氮平均增大到300 mg/L时,系统可实现稳定的短程硝化反硝化,亚硝态氮积累率达到60.79%,并随着初始氨氮浓度的增加进一步提高,系统对氨氮的去除率始终维持在80%以上。初始氨氮浓度对系统硝化类型有极大影响,FA与FNA的交替抑制作用是系统启动并维持稳定短程硝化过程的关键。
According to the special water quality characteristics of landfill leachate, the effect of free ammonia （FA） and free nitrous acid （FNA） on the short-cut nitrification of landfill leachate in an A/O system has been studied. Subsequently ,the short-cut nitrification can be achieved and maintain steady when the initial ammonia-nitrogen concentration is up to 300 mg/L, the nitrite accumulation rate reaches 60.79% and continues to grow higher along with the increase of initial ammonia-nitrogen concentration. The ammonia-nitrogen removing efficiency always keeps at above 80%. The initial concentration of ammonia-nitrogen has an enormous influence on the type of nitration of the system. The alternative inhibition of FA and FNA is the key factor to start-up and maintain the process of short- cut nitrification steady.
出处
《工业水处理》
CAS
CSCD
北大核心
2012年第5期48-51,共4页
Industrial Water Treatment
基金
住建部科技攻关项目(05-K2-11)
关键词
垃圾渗滤液
短程硝化
游离氨
游离亚硝酸
landfill leachate
short-cut nitrification
free ammonia
free nitrous acid
