化肥厂高浓度氨氮废水的处理和回用

化肥厂高浓度氨氮废水的处理和回用

李晓萍^1,2，刘小波¹，金向军²，林海波¹

（1. 吉林大学化学学院，长春 130021； 2. 白城师范学院化学系，吉林省白城 137000）

收稿日期:2005-07-25 修回日期:1900-01-01 出版日期:2006-03-26 发布日期:2006-03-26
通讯作者: 林海波

Treatment and Recovery of the High Concentration Ammonia-nitrogen Wastewater from Fertilizer Plant

LI Xiao-ping^1,2, LIU Xiao-bo¹, JIN Xiang-jun², LIN Hai-bo¹

(1. College of Chemistry, Jilin University, Changchun 130021, China; 2. Department of Chemistry, Baicheng Teachers College, Baicheng 137000, Jilin Province, China)

Received:2005-07-25 Revised:1900-01-01 Online:2006-03-26 Published:2006-03-26
Contact: LIN Hai-bo

摘要/Abstract

摘要： 在实验室规模研究了通过生成鸟粪石（磷酸铵镁， MAP）去除氨氮工艺条件的影响. 加入磷酸和MgO产生MAP沉淀， pH值对其影响很大， pH值为9.0时氨氮去除效果最好. PO₄^3-， Mg²⁺， NH₄⁺的摩尔比为1 ∶1.5 ∶1时，氨氮去除率较大并且可较好地回收氨生成鸟粪石. 此外，物料的加入次序严重影响氨氮的去除. 两步沉淀工艺氨氮去除率达99.1%, 氨回收率为80.1%.

关键词: 氨氮废水, 鸟粪石, 磷酸氨镁, 废水处理, 回用, 化肥厂

Abstract: The effects of processing conditions on NH₄⁺-N(ammonia-nitrogen) removal to form struvite(magnesium ammonium phosphate, MAP) were studied in a laboratory scale. MAP precipitation was carried out by adding phosphoric acid and MgO. The effect of pH was significant and the highest removal was obtained at pH 9.0. A PO₄^3-∶Mg²⁺ ∶NH₄⁺ molar ratio of 1 ∶ 1.5 ∶1 was found to be beneficial for the higher removal of NH₄⁺-N and the higher recovery of ammonia to form struvite. In addition, the feedin sequence of material significantly affects NH₄⁺-N removal. It was shown that a highest NH₄⁺-N removal of 99.1% and an ammonia recovery of 80.1% could be obtained by a two-step precipitation process.

Key words: ammonia-nitrogen wastewater, struvite, magnesium ammonium phosphate, wastewater treatment, recovery, fertilizer

中图分类号:

O646

李晓萍，刘小波，金向军，林海波. 化肥厂高浓度氨氮废水的处理和回用[J]. J4, 2006, 44(02): 295-298.

LI Xiao-ping, LIU Xiao-bo, JIN Xiang-jun, LIN Hai-bo. Treatment and Recovery of the High Concentration Ammonia-nitrogen Wastewater from Fertilizer Plant[J]. J4, 2006, 44(02): 295-298.

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