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Biological Behavior of Anammox Process for Municipal Wastewater Treatment: Effect of Ammonia Removal and Other Parameters

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Author(s): R. Nabizadeh | A. Jalilzadeh | A. Mesdaghinia | S. Nasseri | A. H. Mahvi | K. Naddafi | H. Hossini | H.Azimi

Journal: Pakistan Journal of Chemistry
ISSN 2220-2625

Volume: 2;
Issue: 3;
Start page: 106;
Date: 2012;
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Keywords: Anammox process | ammonium | partial nitrification | C:N ratios

ABSTRACT
Historically, nitrogen compound due to major environmental and public health problems have been considered. Anaerobicammonium oxidation processes were proposed by many advantages such as; novelty, promising method and cost-effective. In thiswork, we used of anommax process for a wastewater with high C:N ratios and the main parameter likes pH; temperature,NO2/NH4 ratio and behavior of COD, ammonium and nitrite during operation time of 55 days were evaluated. High efficiency innitrite and ammonium removal is observed at pH values between 7.5 to 8 and operation times between 9 to 23 days.Furthermorethe variation of the nitrite/ammonium ratio done dependence to pH, and a higher ratio was associated with higher pHvalues. And lower values of NO2/NH4 ratio have occurred with decrease of pH at third phase of anommax process. The averageelimination efficiency of COD was occurred about 89.22%, but the removal efficiency of COD in anommax reactor was obtainedabout 49.5%. Furthermorethe removal efficiency of ammonium and nitrite were provided about 50% for each.
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