Characteristics of granular sludge and nitrogen removal performance in ANAMMOX-UASB reactor fed with low strength substrate - Details

Author：

Indexed by：

EI Scopus PKU CSCD

Abstract：

The　performance　of　anaerobic　ammonium　oxidation(ANAMMOX)was　investigated　by　increasing　influent　flow　rate　stepwise　in　up-flow　anaerobic　sludge　blanket(UASB)reactor,　with　low　strength　substrate(19.8　mg　NO2--N·L-1　and　16.6　mg　NH4+-N·L-1).　The　results　showed　that　high　volumetric　nitrogen　removal　rate　could　be　achieved　and　granular　sludge　could　be　formed　in　UASB　reactor　fed　with　low　strength　substrate.　The　average　removal　efficiencies　of　NH4+-N　and　NO2--N　were　93.3%　and　94.6%,　respectively.　The　hydraulic　retention　time(HRT)was　progressively　shortened　from　1.26　h　to　0.14　h,　and　when　HRT　was　0.14　h,　the　volumetric　nitrogen　removal　rate　was　5.73　kg　N·m-3·d-1.　The　ANAMMOX　granules　were　rufous　in　color　and　the　majority(81.81%)of　granules　was　in　the　range　of　0.5-0.9　mm　with　the　average　of　0.73　mm.　©　All　Rights　Reserved.

Keyword：

Wastewater treatment Nitrogen removal Granulation Nitrogen oxides Granular materials

Author Community：

[ 1 ] [Wang, Junmin]Key Laboratory of Beijing Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Wang, Shuying]Key Laboratory of Beijing Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Huo, Mingxin]School of Urban and Environmental Science, Northeast Normal University, Changchun 130024, Jilin, China
[ 4 ] [Zhang, Shujun]Beijing Drainage Group Co. Ltd., Beijing 100022, China
[ 5 ] [Ma, Bin]School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China
[ 6 ] [Gan, Yiping]Beijing Drainage Group Co. Ltd., Beijing 100022, China
[ 7 ] [Yang, Wu]School of Urban and Environmental Science, Northeast Normal University, Changchun 130024, Jilin, China
[ 8 ] [Peng, Yongzhen]Key Laboratory of Beijing Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 9 ] [Peng, Yongzhen]School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China