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Study on the Treatment of Ammona-Nitrogen Wastewater by Magnesium Ammonium Phosphate

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Abstract:

Large quantities of ammonia-nitrogen (-N) in wastewater is one of the main causes of eutrophication that endanger both natural water bodies and fresh water seriously. Thus, it is necessary to find an economic and feasible method to remove the ammonium-nitrogen in wastewater before they are returned to the environment. Magnesium ammonium phosphate precipitation method is one of the effective technology of wastewater treatment. In this paper, the influence of initial ammonia-nitrogen concentration, pH, temperature and mole ratio of :NH+4 :Mg2+ were studied, What is more, the optimum condition of this process was determined. The results indicated that ammonia-nitrogen concentration is decreased from 1434 mg/L to 95.65 mg/L, and the removal rate reached 93.33% at the optimum conditions, which laying a foundation for the following biochemical treatment.

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Periodical:

Advanced Materials Research (Volumes 233-235)

Pages:

528-531

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.233-235.528

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Online since:

May 2011

Authors:

Li Na He, Hua Ye, Can Cao, Ying Fen Li

Keywords:

Ammonia Nitrogen, Magnesium Ammonium Phosphate, Removal Rate

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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