RTD对内循环三相生物流化床脱氨氮效率的影响

RTD对内循环三相生物流化床脱氨氮效率的影响

姜楠^1,2，马小凡¹，王鹤立^1,2

1.吉林大学环境与资源学院, 长春 130023；2.中国地质大学水资源与环境学院, 北京 100083

收稿日期:2006-01-08 修回日期:1900-01-01 出版日期:2006-07-26 发布日期:2006-07-26
通讯作者: 王鹤立

Effects of RTD on NH4-N Removal of Inner Loop ThreePhase Biological Fluidized Bed Reactor

JIANG Nan^1,2, MA Xiao-fan¹, WANG He-li^1,2

1.College of Environment and Resources, Jilin University, Changchun 130023, China；2.School of Water Resource and Environment, China University of Geosciences, Beijing 100083, China

Received:2006-01-08 Revised:1900-01-01 Online:2006-07-26 Published:2006-07-26
Contact: WANG He-li

摘要/Abstract

摘要： 采用脉冲法刺激响应技术测定了不同流态条件下三相生物流化床的水力停留时间分布(RTD)，得到反应器好氧流化区的串联级数近似为1，从而可用全混流反应器(CSTR)模型来研究其动力学特点，通过对比研究，得到在理论停留时间为1.5 h时，反应器的体积利用率达到最优。同时也对比了反应器在各种理论停留时间（HRT）下的脱氨氮效率，发现在水力停留时间为1.5 h时，反应器也具有最佳处理效率，氨氮的脱除率达到90%以上，从而验证了示踪试验的可靠性，并为生化反应器的设计放大与稳定运行提供了宝贵的资料。

关键词: 三相生物流化床, 停留时间分布(RTD), 氨氮脱除率

Abstract: Hydraulic Residence Time Distributions (RTDs) in an inner loop threephase biological fluidized bed reactor were measured under different flow regimes using pulse stimulusresponse technique method. The number of tankinseries measured was approximately 1 in aerobic area of the reactor, therefore the reactor can be seen as a Continued Stirred Tank Reactor (CSTR). By comparing different Hydraulic Retention Time (HRT), the authors found that at HRT of 1.5 h, the capacity usage reached the optimum level. Meanwhile the maximum NH4-N removal efficiency, more than 90%, was also obtained when HRT was 1.5 h The results validates the reliability of RTD test and provides the basis of sizing and scaling up of the reactor.

Key words: threephase biological fluidized bed, RTD, NH₄N removal

中图分类号:

X131.2

姜楠，马小凡，王鹤立. RTD对内循环三相生物流化床脱氨氮效率的影响[J]. J4, 2006, 36(04): 605-608.

JIANG Nan, MA Xiao-fan, WANG He-li. Effects of RTD on NH4-N Removal of Inner Loop ThreePhase Biological Fluidized Bed Reactor[J]. J4, 2006, 36(04): 605-608.

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