Heterotrophic denitrification on granular anammox SBR treating urban landfill leachate

被引:82
作者
Ruscalleda, M. [1 ]
Lopez, H. [1 ]
Ganigue, R. [1 ]
Puig, S. [1 ]
Balaguer, M. D. [1 ]
Colprim, J. [1 ,2 ]
机构
[1] Univ Girona, Fac Sci, Inst Environm, Chem & Environm Engn Lab LEQUIA UdG, E-17071 Girona, Catalonia, Spain
[2] Univ Girona, Catalan Inst Water Res ICRA, E-17003 Girona, Catalonia, Spain
关键词
anammox; biodegradable organic matter; heterotrophic denitrification; urban landfill leachate;
D O I
10.2166/wst.2008.544
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The anammox process was applied to treat urban landfill leachate coming from a previous partial nitritation process. In presence of organic matter, the anammox process could coexist with heterotrophic denitrification. The goal of this study was to asses the stability of the anammox process with simultaneous heterotrophic denitrification treating urban landfill leachate. The results achieved demonstrated that the anammox process was not inactivated by heterotrophic denitrification. Moreover, part of the nitrate produced by anammox bacteria and part of the influent nitrite were removed by heterotrophic denitrifiers with associated biodegradable organic matter consumption. In this sense, the contribution on nitrogen removal of each process was calculated using a nitrogen mass balance methodology. An 85.1 +/- 5.6% of the nitrogen consumption was achieved via anammox process while the average heterotrophic denitrifiers contribution was 14.9 +/- 5.6%. Heterotrophic denitrification was limited by the available easily biodegradable organic matter.
引用
收藏
页码:1749 / 1755
页数:7
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