Experimental research on treatment for ammonium-nitrogen from diosgenin wastewater by MAP process

Author

Zheng, Dan ; Bao, Jianguo ; Lv, Quanxi ; Yang, Xin

Author_Institution

Sch. of Environ. Studies, China Univ. of Geosci., Wuhan, China

fYear

2011

fDate

22-24 April 2011

Firstpage

1223

Lastpage

1225

Abstract

The method of magnesium ammonium phosphate (MAP) precipitation was used to remove high concentration of ammonia-nitrogen wastewater. A lab scale study about diosgenin wastewater was conducted to optimize the reaction condition by single factor experimentation. MgCl₂·6H₂O and Na₂HPO₄·12H₂O were used as precipitants. The experimental results demonstrated that the removal rate of ammonia nitrogen was up to 63.44% when pH value was 9.5, the molar ratio of Mg²⁺:NH⁴⁺:PO₄^3- was controlled at 1:1:1 and the reaction time was 2 hours.

Keywords

ammonia; magnesium compounds; precipitation (physical chemistry); wastewater treatment; MAP precipitation; ammonium-nitrogen wastewater; diosgenin wastewater treatment; experimental research; magnesium ammonium phosphate precipitation; pH value; time 2 hour; Biology; Chemicals; Magnesium; Nitrogen; Pollution; Wastewater; ammonia-nitrogen; chemical precipitation; diosgenin wastewater; magnesium ammonium phosphate (MAP);

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Technology and Civil Engineering (ICETCE), 2011 International Conference on

Conference_Location

Lushan

Print_ISBN

978-1-4577-0289-1

Type

conf

DOI

10.1109/ICETCE.2011.5776184

Filename

5776184