Formation and controlling of N2O during short-cut biological nitrogen removal process using pulsed-feeding SBR - 文章详情页

作者：

Gong, Y. (Gong, Y..) | Peng, Y. (Peng, Y..) | Yang, Q. (Yang, Q..)

收录：

Scopus PKU CSCD

摘要：

Using　a　lab-scale　batch　sequencing　reactor(SBR),　advanced　nitrogen　removal　from　municipal　wastewater　and　stabilizing　short-cut　nitrification　and　denitrification,　as　well　as　N2O　emission,　were　investigated　by　on-line　pH　controlling.　The　aeration　rate　was　controlled　at　60　L/h.　It　revealed　that　by　step-feeing　pattern,　less　N2O　was　emitted　and　less　external　carbon　for　denitrification　was　required.　The　increasing　feeding　mode　was　efficient　for　reducing　the　NO2-　accumulation　and　N2O　emission　when　organic　carbon　in　the　influent　was　insufficient.　The　N2O-N　emission　were　11.1,　8.86　and　5.04　mg/L　for　one-time　feeding,　two　equal　feeding　and　two　increasing　feeding　mode　respectively.　The　accumulation　of　NO2--N　during　nitrogen　removal　process　contributed　to　the　production　of　N2O.　The　denitrification　process　of　AOB　under　low　DO　level　might　be　the　cause　of　N2O　production　in　which　NO2-　was　used　as　electron　acceptor　and　NH4+　as　electron　donor.

关键词：

Domestic sewage; Nitrifier denitrification; Nitrous oxide; Short-cut nitrogen removal; Step-wise feeding

作者机构：

[ 1 ] [Gong, Y.]Shijiazhuang Institute of Railway Technology, Shijiazhuang 050041, China
[ 2 ] [Gong, Y.]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100022, China
[ 3 ] [Peng, Y.]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100022, China
[ 4 ] [Yang, Q.]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100022, China

通讯作者信息：

龚裕
[Gong, Y.]Shijiazhuang Institute of Railway Technology, Shijiazhuang 050041, China

电子邮件地址：

gykren@163.com

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