| 内循环对A2/O工艺脱氮的影响 |
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| 引用本文： | 王建龙,彭永臻,高永青. 内循环对A2/O工艺脱氮的影响[J]. 北京工业大学学报, 2008, 34(5): 539-543 |
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| 作者姓名： | 王建龙 彭永臻 高永青 |
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| 作者单位： | 北京工业大学环境与能源工程学院,北京,100022;北京工业大学环境与能源工程学院,北京,100022;北京工业大学环境与能源工程学院,北京,100022 |
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| 基金项目： | 海外青年学者合作研究基金，教育部高等学校博士学科点专项科研基金，北京市属市管高等学校人才强教创新团队资助项目，北京市教委科研基地--科技创新平台项目 |
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| 摘 要： | 采用有效容积为52L的A~2/O工艺,以实际生活污水为水源,研究了不同进水ρ(NH_4~+-N)负荷条件下,内循环回流比对系统脱氮效率的影响.实验结果表明,硝化速率随着进水ρ(NH_4~+-N)负荷增加而升高,系统脱氮效率随着内循环回流比增加而升高,内循环回流比从0增加到6,系统脱氮效率升高了14.0%,其中,ρ(NO_x~-N)去除率升高了10.2%,ρ(NH_4~+-N)去除率升高了3.8%.为稳定出水中氮的浓度、降低运行费用,内循环回流比应随进水ρ(NH_4~+-N)负荷的增加而增加,一般情况下内循环回流比易控制在2左右.
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| 关 键 词： | 内循环 A2/O工艺 脱氮 氨氮负荷 |
| 文章编号： | 0254-0037(2008)05-0539-05 |
| 修稿时间： | 2007-01-08 |
Effect of Internal Recycle on the Nitrogen Removal of an A2/O Process |
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| WANG Jian-long,PENG Yong-zhen,GAO Yong-qing. Effect of Internal Recycle on the Nitrogen Removal of an A2/O Process[J]. Journal of Beijing Polytechnic University, 2008, 34(5): 539-543 |
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| Authors: | WANG Jian-long PENG Yong-zhen GAO Yong-qing |
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| Abstract: | Determining the most favourable recycle ratio is an important item in A~2/O process operational optimization.In this work,feeding with sewage,the effect of recycle ratio on nitrogen removal when using different influent nitrogen loads was tested in an A~2/O process,which available capacity was 52 L. Experimental results showed that increasing the internal recycle ratio from 0 to 6 produced a 14.0% increase in nitrogen removal.This increase was achieved by improvingρ(NO_x~--N)removal efficiency of 10.2% with an increase inρ(NH_4~+-N)removal efficiency of 3.8%.In order to stabilitate the effluent total nitrogen concentration and reduce operational cost,internal recycle ratio should be increasing with influentρ(NH_4~+-N) loading.The optimal internal recycle ratio is 2 in general. |
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| Keywords: | internal recycle ratio(IRR) anaerobic-anoxic-aerobic(A~2/O) nitrogen removal ammonia loading |
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