Study on the Treatment of Ammonia-nitrogen Wastewater by Magnesium Ammonium Phosphate

被引：1

作者：

He, Lina ^{[1
]}

Ye, Hua ^{[1
]}

Cao, Can ^{[1
]}

Li, Yingfen ^{[1
]}

机构：

[1] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China

来源：

FUNDAMENTAL OF CHEMICAL ENGINEERING, PTS 1-3 | 2011年 / 233-235卷

关键词：

Ammonia-nitrogen; Magnesium ammonium phosphate; Removal rate; REMOVAL; PRECIPITATION; FERTILIZER; RECOVERY;

D O I：

10.4028/www.scientific.net/AMR.233-235.528

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Large quantities of ammonia-nitrogen (NH4+-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 PO43- : NH4+ :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.

引用

页码：528 / 531

页数：4

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