摘要
采用螺旋升流式反应器(SUFR)处理生活污水,考察了好氧反应池中DO浓度对其同步硝化反硝化的影响。结果表明,在好氧反应池上部溶解氧浓度为3.0～3.5 mg/L时,发生了明显的同步硝化反硝化现象,其对TN的去除量占SUFR系统对TN去除总量的16%左右;好氧反应池中的同步硝化反硝化反应只发生在池的下部,其中、上部只进行了好氧硝化反应;SUFR系统中好氧反应池上部的最佳溶解氧浓度范围为3.0～3.5 mg/L,此时系统的硝化和反硝化效果最佳,好氧反应池中的脱氮效果也较好,系统对TN的去除率>84%。
The spiral up-flow reactor（SUFR） was used to treat domestic wastewater. The effect of DO concentration on simultaneous nitrification and denitrification （SND） in the aerobic reactor was investigated. The results show that： （1）When DO concentration in the upside of the aerobic reactor is 3.0 mg./L to 3.5 mg./L, obvious phenomenon of simultaneous nitrification and denitrification occurs in the aerobic reactor. The proportion of SND nitrogen removal in the total denitrifying nitrogen removal is about 18% ; （2）The SND phenomenon only occurs in the bottom of aerobic reactor instead of the top; （3）The favorable DO in the upside of the aerobic reactor is remained as 3.0 mg/L to 3.5 mg/L. At this level, the SUFR system can obtain favorable nitrification-denitrification and the nitrogen removal efficiency by SND in the aerobic reactor is also better. The removal efficiency of TN in SUFR system is above 84%.
出处
《中国给水排水》
CAS
CSCD
北大核心
2007年第7期70-73,共4页
China Water & Wastewater
基金
国家自然科学基金资助项目(50378095)
关键词
螺旋升流式反应器
生物脱氮
同步硝化反硝化
spiral up-flow reactor
biological nitrogen removal
simultaneous nitrification and denitrification
