Biological nitrogen removal from municipal landfill leachate in a pilot scale suspended carrier biofilm process

1998 ◽  
Vol 32 (5) ◽  
pp. 1564-1570 ◽  
Author(s):  
U Welander ◽  
T Henrysson ◽  
T Welander
Keyword(s):  
Nitrogen Removal ◽  
Landfill Leachate ◽  
Pilot Scale ◽  
Biological Nitrogen Removal ◽  
Municipal Landfill ◽  
Biofilm Process ◽  
Biological Nitrogen ◽  
Suspended Carrier

A Pilot-Scale Experimental Research on Biological Nitrogen Removal in a Modified SBR

2012 ◽  
Vol 550-553 ◽  
pp. 1156-1159
Author(s):  
Jun Li ◽  
Xue Bin Li ◽  
Jiong Hui Li
Keyword(s):  
Removal Efficiency ◽  
Experimental Research ◽  
Nitrogen Removal ◽  
Pilot Scale ◽  
Biological Nitrogen Removal ◽  
Urban Wastewater ◽  
Removal Ratio ◽  
N Efficiency ◽  
Biological Nitrogen

A pilot-scale modified SBR process was investigated to treat urban wastewater. The average NH4+-N efficiency removal was 98 %. The average TN removal efficiency was 52 %. The average effluent NH4+-N was 0.34 mg/L. The average effluent TN was 12 mg/L. The average effluent phosphorus was 0.75 mg/L. The average effluent COD was 35 mg/L. The result showed that the ratio of influent NH4+-N /TN was equal approximately to TN removal efficiency. The TN removal ratio was decided by the influent NH4+-N. The long anaerobic time was benefit to the nitrogen removal. The optimal anaerobic time should be set at 1 hour.

Partial Nitrification in Microaerobic Tank of “Anoxic-Anaerobic- Microaerobic-Aerobic (A2O2)” Biological Nitrogen Removal Process

2013 ◽  
Vol 295-298 ◽  
pp. 1039-1044 ◽  
Author(s):  
Jian Lei Gao ◽  
Bing Nan Lv ◽  
Yi Xin Yan ◽  
Jian Ping Wu
Keyword(s):  
Nitrogen Removal ◽  
Removal Rate ◽  
Pilot Scale ◽  
Partial Nitrification ◽  
Biological Nitrogen Removal ◽  
Nitrogenous Fertilizer ◽  
Removal Process ◽  
Batch Tests ◽  
N Removal ◽  
Biological Nitrogen

The pilot-scale Anoxic-Anaerobic-Microaerobic-Aerobic (A2O2) biological nitrogen removal process was used to treat the wastewater from nitrogenous fertilizer production with C/N ratio of 1~2. Batch tests were conducted to investigate the patial nitrification using the activated sludge from the microaerobic tank rich in nitrite bacteria as the experimental object. Results showed that 95% removal efficiency of NH3-N could be obtained with the HRT of 30 h. The SVI affected the NH3-N removal rate and the optimal SVI was 106 mL/g. The ORP was well correlated with the logarithm of NH3-N concentration with the linear regression equation of y=-57.233x+3.308. Moreover, the kinetic model for partial nitrification was determined as v=4.762s/(9.86+s).

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