Influence of chemical oxygen demand concentrations on anaerobic ammonium oxidation by granular sludge from EGSB reactor / 生物医学与环境科学(英文)
Biomedical and Environmental Sciences
;
(12): 192-196, 2006.
Article
in English
| WPRIM
| ID: wpr-229703
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the effect of chemical oxygen demand (COD) concentrations on the anaerobic ammonium oxidation (ANAMMOX).</p><p><b>METHODS</b>An Expanded Granular Sludge Bed (EGSB) reactor was used to cultivate the granular sludge and to perform the ANAMMOX reaction in the bench scale experiment. NH4(+)-N and NO2(-)-N were measured by using colorimetric method. NO3(-)-N was analyzed by using the UV spectrophotometric method. COD measurement was based on digestion with potassium dichromate in concentrated sulphuric acid.</p><p><b>RESULTS</b>When the COD concentrations in the reactors were 0 mg/L, 200 mg/L, 350 mg/L, and 550 mg/L, respectively, the NH4(+)-N removal efficiency was 12.5%, 14.2%, 14.3%, and 23.7%; the removal amount of NO2(-)-N was almost the same; the nitrate removal efficiency was 16.8%, 94.5%, 86.6%, and 84.2% and TN removal efficiency was 16.3%, 50.7%, 46.9%, and 50.4%, moreover, the COD removal efficiency was 85%, 65.7%, and 60%; the COD removal rate was 27.42, 61.88, and 97.8 mg COD/(h x L).</p><p><b>CONCLUSION</b>COD concentrations have a significant influence on anaerobic ammonium oxidation by granular sludge.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Oxidation-Reduction
/
Oxygen
/
Potassium Dichromate
/
Sewage
/
Sulfuric Acids
/
Time Factors
/
Industrial Microbiology
/
Chemistry
/
Waste Disposal, Fluid
/
Bioreactors
Language:
English
Journal:
Biomedical and Environmental Sciences
Year:
2006
Type:
Article
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