摘要
通过同步硝化反硝化，以悬浮填料为载体的生物反应器可以有效完成单级生物脱氮．对影响这一过程的主要因素进行了考察，在室温条件下，当进水NH^＋ 4 -N浓度为100mg／L时，溶解氧DO（dissdved oxygen，DO）为2．5～3．5mg／L，COD／NH^＋ 4-N质量比为12：1，pH值为8左右时获得最佳的脱氮效果，总氮TN（Total Nitrogen，TN）的去除率在80％～90％．实验还发现当进水NH^＋ 4-N浓度从100mg／L直接升高至200mg／L时，去除率从90％降至60％左右．可见反应器对高氨氮废水的适应性有待进一步研究．
By simultaneous nitrification and denitrification, the single-stage biological nitrogen removal could be achieved elhuently in a suspended carrier biological reactor. The primary factor influencing nitrogen removal was studied when influent NH^＋ 4-N concentration was about 100 mg/L. It was concluded that the optimal dissolved oxygen concentration was 2. 5 to 3. 5 mg/L, COD/NH^＋ 4-N 12 ： 1, and pH about 8, total nitrogen（TN） removal rate ranging from 80% to 90%. Moreover, if influent NH^＋ 4-N concentration rose directly from 100 mg/L to 200 mg/L, total nitrogen（TN） removal rate descented from 90% to 60% approximately. More study is required about the adaptability of the reactor to high-loading ammonia nitrogen wastewater.
出处
《甘肃科学学报》
2007年第2期147-150,共4页
Journal of Gansu Sciences
关键词
悬浮填料
同步硝化反硝化
溶解氧
PH值
氨氮
suspended carrier
simultaneous nitrification and denitrification
dissolved oxygen
C/N
pH value
ammonia nitrogen
