摘要
采用固定化包埋颗粒,借助气升式内循环好氧流化床反应器,对人工模拟低氨氮、低有机物的微污染源水进行处理。分别研究了DO和碳氮比对氨氮和有机物去除率的影响。研究表明,在T=24℃,HRT=60min,pH=7.1～7.3的条件下,当C∶N=1∶1、DO为3～8mg/L时,系统对氨氮的去除率>90%,对COD的去除率保持在50%～60%;当DO=8mg/L、C∶N=2∶1时,对氨氮的去除率最高达93.56%,对COD的去除率为50%～60%;当C∶N=3∶1时,对氨氮的去除率>90%,对COD的去除率在40%左右。在微污染源水的处理过程中,固定化包埋硝化菌有较强的适应能力和较高的处理效率。
The artificial micropolluted source water with low ammonia nitrogen and organics was treated by immobilized pellets in air-lift inner loop aerobic fluidized bed reactor. The influence of DO and C/N ratio on the removal efficiencies of ammonia nitrogen and organics was studied respectively. The study shows that under the conditions of T = 24 ℃ , HRT = 60 min and pH = 7.1 to 7.3, the removal rate of ammonia nitrogen is above 90% , and the removal rate of COD keeps at 50% to 60% at C/N ratio of 1 ： 1 and DO of 3 to 8 mg/L; the removal rate of ammonia nitrogen is up to 93.56% , and the removal rate of COD is 50% to 60% at C/N ratio of 2 ： 1 and DO of 8 mg/L; the removal rate of ammonia nitrogen remains above 90% , and the removal rate of COD is about 40% at C/N ratio of 3 ： 1. The results show that the immobilized nitrobacteria have stronger adaptability and higher treatment efficiency during treatment of micropolluted source water.
出处
《中国给水排水》
CAS
CSCD
北大核心
2008年第3期56-59,共4页
China Water & Wastewater
关键词
模拟微污染源水
固定化
包埋硝化菌
低浓度氨氮
DO
碳氮比
artificial micropolluted source water
immobilization
embedded nitrobacteria
low concentration ammonia nitrogen
DO
C/N ratio
