Deep Denitrification Performance in Pilot-scale Denitrification Biofilter System and Microbial Community

doi:10.11908/j.issn.0253-374x.21310

Home > Archive>Volume 49, Issue 12, 2021 >1727-1737. DOI:10.11908/j.issn.0253-374x.21310

Deep Denitrification Performance in Pilot-scale Denitrification Biofilter System and Microbial Community
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                        10.11908/j.issn.0253-374x.21310
                    
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                        WANG Lin1WANG Lin
College of Environmental Science and Engineering， Tongji University， Shanghai 200092， China
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ZHANG Haohao1,2ZHANG Haohao
College of Environmental Science and Engineering， Tongji University， Shanghai 200092， China;Zhengzhou Urban Planning Design and Survey Research Institute， Zhengzhou 450052， China
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WU Xinghai1,3WU Xinghai
College of Environmental Science and Engineering， Tongji University， Shanghai 200092， China;Shanghai Water Industrial Equipment Company， Shanghai 200092， China
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LI Yongmei1LI Yongmei
College of Environmental Science and Engineering， Tongji University， Shanghai 200092， China
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Affiliation:1.College of Environmental Science and Engineering， Tongji University， Shanghai 200092， China;2.Zhengzhou Urban Planning Design and Survey Research Institute， Zhengzhou 450052， China;3.Shanghai Water Industrial Equipment Company， Shanghai 200092， China
Clc Number:X703
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Abstract:

A pilot-scale denitrification biofilter system was constructed to investigate the deep denitrification performance when the actual secondary effluent was adopted， and the effects of key parameters （i.e. hydraulic load， C/N ratio and temperature） on the operation were carried out. The pilot-scale system mainly used external carbon source for denitrification rather than organic matter existed in the secondary effluent. The recommended hydraulic loading and C/N ratio was 5 m·h^-1 and 4， and under the conditions the average removal efficiencies of COD and TN were 62.8% and 67.3%， respectively. When the temperature was 15~27 ^oC， TN in the effluent was steady below 10.0 mg·L^-1. The relative abundances of conventional denitrifiers such as Hyphomicrobium and Methyloversatilis （accounted for 25.12%） were higher in the pilot-scale denitrification biofilter system， and the relative abundances of simultaneous nitrification-denitrification bacteria such as Methylotenera and Paracoccus were also much higher （accounted for 33.29%）. These bacteria guaranteed the good denitrification performance in the system.

Key words:denitrification;biofilter;pilot-scale system;microbial community;organic compounds utilization

Reference

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WANG Lin, ZHANG Haohao, WU Xinghai, LI Yongmei. Deep Denitrification Performance in Pilot-scale Denitrification Biofilter System and Microbial Community[J].同济大学学报(自然科学版),2021,49(12):1727~1737

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Received:July 08,2021
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Online: December 30,2021
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