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《Journal of Beijing University of Technology》 2008-05
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Effect of Internal Recycle on the Nitrogen Removal of an A~2/O Process

WANG Jian-long PENG Yong-zhen GAO Yong-qing (College of Environmental and Energy Engineering,Beijing University of Technology,Beijing 100022,China)  
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.
【Fund】: 海外青年学者合作研究基金项目(50628808);; 高等学校博士学科点专项科研基金(200600050002);; 北京市属市管高等学校人才强教“创新团队”资助项目(05005013200504);; 北京市教委科研基地——科技创新平台项目.
【CateGory Index】: X703
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【Citations】
Chinese Journal Full-text Database 2 Hits
1 PENG Yong-zhen, MA Yong, WANG Hong-chen, GAN Yi-ping, YANG Xiang-ping (Beijing Key Laboratory of Water Environment Recovery, Beijing University of Technology, Beijing 100022,China; Faculty of Municipal and Environmental Engineering, Harbin institute of Technology, Harbin 150090, China; Beijing Urban Sewage Group, Beijing 100061, China );Development and Study of Internal Recirculation Flow Control Strategy in A/O Nitrogen Removal Process[J];Journal of Beijing Polytechnic University;2004-02
2 Bi Xuejun Gao Tingyao (Tongji University, Shanghai 200092);Study on Anoxic/Anaerobic/Areobic Process of Denitriflcation and Phosphorus Removal[J];Shanghai Environmental Sciences;1999-01
【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 GUO Hai-yan1,2,ZHOU Ji-ti*1,ZHANG Xiu-hong1(1.School of Environmental and Biological Science and Technology,Dalian University of Technology,Dalian 116024,China;2.College of Environmental and Chemical Engineering,Dalian Jiaotong University,Dalian 116028,China);Nitrogen removal in an airlift combined A/O biofilm reactor[J];Journal of Dalian University of Technology;2009-02
2 HU Ke-ke1, ZHAO Feng2, ZHAO Chun-wei3, WANG Xiang-san4 (State Key Laboratory of Water Resource and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China);Influencing Mechanism Analysis of Magnetization-Anaerobic Biological Degradation of Organic Compounds[J];Environmental Science & Technology;2009-03
3 Hong Zhihao,Lu Yanfen(Guangzhou Enprotech Co.Ltd.,Guangzhou 510080,China);Discussion on Approach to the Treatment of the LAS Wastewater[J];Guangdong Chemical Industry;2007-07
4 Long Yingchen1,Bi Fang2,Yang Ying3(1.Sihui Environmental Monitoring Station,Sihui 526200;2.South China University of Technology,Guangzhou 510640;3.Design Institute of Guangzhou Iron and Steel Group,Guangzhou 510380,China);ABR & Biocontact Oxidation Process in Pharmacy Wastewater Treatment[J];Guangdong Chemical Industry;2007-11
5 Yao Yi,Chen Xuemin(School of Environmental Science & Municipal Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China);Study on the Coagulating Process of Treating the Potato Starch Wastewater[J];Guangdong Chemical Industry;2008-03
6 Zhen Tuzhang,Wang Shifa(Guangdong Jingfeng Environment Protect Equipment & Engineering limited Company,Guangzhou 510000,China);ABR & Biocontact Oxidation Process in Pharmacy Wastewater Treatment[J];Guangdong Chemical Industry;2008-07
7 Chen Qingchang,Feng Aikun(Environmental protective Bureau of Zhaoqing,Zhaoqing 526040,China);Project Application of Pharmaceutical Wastewater Treated by Anaerobic and Aerobic[J];Guangdong Chemical Industry;2008-07
8 Xie Fei(Kaifeng Environmental Protection Inspection Station,Kaifeng 475000,China);Healthy Risk Assessment on Recycling of Municipal Wastewater[J];Guangdong Chemical Industry;2008-08
9 HUANG Li-hui~1,ZHANG Bo~2,BI Xue-jun~3,MA Lu-ming~1(1.School of Environmental Science and Engineering,Tongji University,Shanghai 200092,China:2.Shandong ProvincialEnvironmental Protection Bureau,Jinan 250000,China;3.School of Environmental and Municipal Engineering.QingdaoInstitute of Architecture and Engineering,Qingdao 266033,China);Full-scale Test on Inverted A~2/O Process[J];China Water & Wastewater;2004-06
10 SI Zhi-xia1,HU Da-qiang2(1.Hangzhou Zhenxing Architectural Design Co.Ltd.,Hangzhou 310007,China;2.East China Investigation and Design Institute,Hangzhou 310014,China);Optimized Design of Technical Parameters for Wastewater Biological Nitrogen Removal Engineering[J];China Water & Wastewater;2008-10
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