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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 634-638Application of Chemical Precipitation in Treating...

Application of Chemical Precipitation in Treating Ammonia Nitrogen from Excess Sludge Liquor

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Abstract:

Removal effect of NH3-N by chemical precipitation process was studied in treating excess sludge liquor (the NH3-N concentration 600~1000mg/L) produced from a municipal wastewater treatment plant. MgSO4 and Na2HPO4 were used as the precipitants to investigate the influences of initial pH, reaction time and the precipitants dosage on the NH3-N removal effect as well as the concentration of residual TP. Results showed that with the initial pH of 11.0, reaction time of 10min, and the additional ratio of precipitants being Mg:N:P＝1.0:1.0:1.0, over 90% NH3-N removal efficiency was achieved which would significantly facilitate the subsequent biological treatment process.

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Periodical:

Advanced Materials Research (Volumes 634-638)

Pages:

204-208

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.634-638.204

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Online since:

January 2013

Authors:

Yi Xin Yan, Jian Lei Gao, Jian Ping Wu

Keywords:

Chemical Precipitation, Excess Sludge Liquor, Removal Efficiency of Ammonia Nitrogen, Residual Concentration of Total Phosphorus

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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