Removal of ammonium from steel wastewater by struvite precipitation

被引：0
|
作者：
刘作华 [1 ]
肖翠翠 [1 ]
刘仁龙 [1 ]
陶长元 [1 ]
机构：
[1] College of Chemistry & Chemical Engineering,Chongqing University
来源：
化工进展 | 2010年 / S1期
基金：
国家高技术研究发展计划(863计划);
关键词：
magnesium ammoniumphosphate(MAP); steel wastewater; ammonium removal;
D O I：
10.16085/j.issn.1000-6613.2010.s1.133
中图分类号：
X703 [废水的处理与利用];
学科分类号：
083002 ;
摘要：
Ammonia is the major pollutant in many industrial and agricultural wastewaters,while with an increasing demand for nitrogen fertilizer worldwide,recovery of ammonia from high concentration ammonium wastewater is a significant way to reduce environmental pollution and to meet the development requirements.The present work was to investigate the factors following pH value,molar ratio of chemical reagents to afford theoretical support for wastewater treatment and resource recycling.Precipitate of struvite was analyzed by X-ray diffraction(XRD).Results indicated that by formation of magnesium ammoniumphosphate,ammonium in steel wastewater could be removed under the conditions following pH 10,with molar ratio of PO43-∶NH4+∶Mg2+ 1.3∶1∶1.2,and the ammonium removal efficiency was up to 95%.
引用
收藏
页码：686 / 689
页数：4
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