Effect of organic carbon on nitrogen removal and the microbial communities in SNAD process - 文章详情页

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摘要：

Effect　of　different　organic　substrate　concentration　on　nitrogen　removal　in　SNAD　and　the　application　of　this　process　to　treat　domestic　wastewater　were　investigated　in　a　MBR,　with　gradually　increased　glucose　as　a　source　of　organic　matter.　Besides,　changes　of　microbial　communities　were　observed　by　PCR-DGGE　techniques.　Experimental　results　and　DGGE　profiles　showed　that　the　increase　of　organic　carbon　concentration　did　not　inhibited　the　activity　and　category　species　of　AOB　and　Anammox　bacteria　when　the　C/N　ration　was　ranged　0　to　2.0.　Meanwhile,　a　significantly　improvement　of　nitrogen　removal　was　observed　via　effective　denitrification,　with　a　total　nitrogen　removal　efficiency　of　67%　and　nitrogen　removal　rate　of　0.34　kg/(m3·d),　respectively.　Under　the　C/N　of　3-4　condition,　the　anammox　bacteria　in　the　system　changed　insignificantly,　but　AOB　was　inhibited　and　the　category　species　reduced,　resulting　a　decreasing　of　nitrogen　removal　efficiency.　Total　nitrogen　removal　efficiency　and　nitrogen　removal　rate　were　about　73%　and　0.17　kg/(m3·d),　respectively.　Nitrosomonas　and　Candidatus　Kuenenia　stuttgartiensis　were　the　predominant　microorganisms　in　the　SNAD　reactor　and　played　a　major　role　in　autotrophic　nitrogen　removal.　©　2016,　Harbin　Institute　of　Technology.　All　right　reserved.

关键词：

Domestic wastewater; Microbes; Organic carbon; PCR-DGGE; SNAD

作者机构：

[ 1 ] [Li, D.]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering (Beijing University of Technology), Beijing, 100124, China
[ 2 ] [He, Y.]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering (Beijing University of Technology), Beijing, 100124, China
[ 3 ] [Zhang, X.]Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, 450001, China
[ 4 ] [Liang, Y.]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering (Beijing University of Technology), Beijing, 100124, China
[ 5 ] [Zhang, Y.]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering (Beijing University of Technology), Beijing, 100124, China
[ 6 ] [Fan, D.]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering (Beijing University of Technology), Beijing, 100124, China
[ 7 ] [Zhang, J.]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering (Beijing University of Technology), Beijing, 100124, China
[ 8 ] [Zhang, J.]State Key Laboratory of Urban Water Resource and Environment (Harbin Institute of Technology), Harbin, 150090, China

通讯作者信息：

李冬
[Li, D.]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering (Beijing University of Technology)China

电子邮件地址：

lidong2006@bjut.edu.cn

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