Operation of partial nitrification to nitrite of landfill leachate and its performance with respect to different oxygen conditions

2014 ◽  
Vol 87 ◽  
pp. 62-68 ◽  
Author(s):  
Li-ke Wang ◽  
Guang-ming Zeng ◽  
Zhao-hui Yang ◽  
Luan-ling Luo ◽  
Hai-yin Xu ◽  
...  
Keyword(s):  
Landfill Leachate ◽  
Partial Nitrification ◽  
Oxygen Conditions

Systematic model development for partial nitrification of landfill leachate in a SBR

2010 ◽  
Vol 61 (9) ◽  
pp. 2199-2210 ◽  
Author(s):  
R. Ganigué ◽  
E. I. P. Volcke ◽  
S. Puig ◽  
M. D. Balaguer ◽  
J. Colprim ◽  
...  
Keyword(s):  
Landfill Leachate ◽  
Batch Reactor ◽  
Statistical Tests ◽  
Model Development ◽  
Partial Nitrification ◽  
Nitrification Kinetics ◽  
Using Data ◽  
Set Up ◽  
Nitrite Nitrate ◽  
Future Work

This study deals with partial nitrification in a sequencing batch reactor (PN-SBR) treating raw urban landfill leachate. In order to enhance process insight (e.g. quantify interactions between aeration, CO2 stripping, alkalinity, pH, nitrification kinetics), a mathematical model has been set up. Following a systematic procedure, the model was successfully constructed, calibrated and validated using data from short-term (one cycle) operation of the PN-SBR. The evaluation of the model revealed a good fit to the main physical-chemical measurements (ammonium, nitrite, nitrate and inorganic carbon), confirmed by statistical tests. Good model fits were also obtained for pH, despite a slight bias in pH prediction, probably caused by the high salinity of the leachate. Future work will be addressed to the model-based evaluation of the interaction of different factors (aeration, stripping, pH, inhibitions, among others) and their impact on the process performance.

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