摘要
通过中试对好氧池内的反硝化现象进行考察。结果表明，在好氧池内出现硝化反应的情况下，当温度〉20℃时，将好氧池的泥龄缩短到3～7d，溶解氧浓度控制在1～2mg／L，则好氧池内反硝化去除的硝酸盐氮量占氨氮硝化生成的硝酸盐氮量的比例〉50％。为促进好氧池内反硝化作用的发生并保证出水水质，提出了在曝气池内投加填料或采用双污泥脱氮除磷工艺的构想。
The aerobic denitrification in aerobic tank was investigated through a pilot-scale test. The results show that the nitrate nitrogen removed by aerobic denitrification accounts for more than 50% of the nitrate nitrogen transformed from ammonia nitrogen, when the SRT is 3 to 7 d, DO is 1 to 2 mg/L and water temperature is higher than 20℃. A tentative idea of adding media into the aeration tank or using a two-sludge system for phosphorus and nitrogen removal is put forward to promote denitrification in aeration tank and ensure the effluent quality.
出处
《中国给水排水》
CAS
CSCD
北大核心
2007年第23期89-92,共4页
China Water & Wastewater
基金
上海市科委青年科技启明星计划项目(06QB14033)
关键词
好氧反硝化
双污泥脱氮除磷
生物膜
aerobic denitrification
two-sludge system for phosphorus and nitrogen removal
biofilm
