中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2008, Vol. 27 ›› Issue (1): 148-151.

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磷酸铵镁技术中不同沉淀剂脱氮除磷效果比较

汤琪   

  1. 重庆交通大学 理学院, 重庆 400074
  • 收稿日期:2006-11-28 出版日期:2008-02-20 发布日期:2016-11-14
  • 作者简介:汤琪(1970-),男,重庆长寿人,讲师,博士研究生,主要从事化学教学和污水处理技术研究。
  • 基金资助:
    重庆交通大学青年科学基金资助项目(2005(36))

Comparison of Results of Removal of Nitrogen and Phosphorus Using Different Precipitation Reagent with Technology of MAP

TANG Qi   

  1. School of Science, Chongqing Jiaotong University, Chongqing 400074, China
  • Received:2006-11-28 Online:2008-02-20 Published:2016-11-14

摘要: 探讨了磷酸铵镁法中不同沉淀剂的脱氮除磷效果,比较了氨氮去除率、磷酸盐去除率、残氮量、残磷量,沉淀物质质量和组成,处理液的电导率。综合考虑了各方面因素得出处理高浓度氨氮废水的较佳的沉淀剂为Na3PO4·12H2O+MgCl2·6H2O和Na3PO4·12H2O+MgSO4·7H2O,处理高浓度磷酸盐废水的较佳的沉淀剂为NH4Cl+MgCl2·6H2O和NH4Cl+MgSO4·7H2O.并对磷酸铵镁沉淀进行了X-衍射光谱和扫描电镜表征。

关键词: 磷酸铵镁, 沉淀剂, 氨氮去除率, 磷酸盐去除率

Abstract: Using different precipitation reagent about magnesium ammonium phosphate (MAP) process, the result of removal of nitrogen and phosphorus was discussed. Some results were compared,such as the removal rate of PO43--P and the removal rate of NH3-N, the quantity of PO43--P and the quantity of NH3-N in the treated water,weight and composition of precipitation,conductivity of treated water. When high ammonia-nitrogen sweage was treated, better precipitation reagent was Na3PO4·12H2O+MgCl2·6H2O and Na3PO4·12H2O+MgSO4·7H2O. When high phosphate sweage was treated, better precipitation reagent was NH4Cl+MgCl2·6H2O and NH4Cl+MgSO4·7H2O. MAP was confirmed by the scanning microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS).

Key words: magnesium ammonium phosphate, precipitation reagent, removal rate of ammonia-nitrogen, removal rate of phosphate

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