用实验室模拟的氨氮废水 ,研究了用浮选法去除氨氮沉淀过程中生成的磷酸铵镁的捕收剂。试验的捕收剂有十二烷基脂肪酸、十四烷基脂肪酸、十六烷基脂肪酸、十二烷基磺酸钠、油酸钠五种 ,考察了不同浮选pH值和不同药剂添加量时的浮选效果 ,结果表明用上述五种药剂都可以实现磷酸铵镁的浮选去除 ,但不同药剂有不同的浮选效果。油酸钠是最佳捕收剂。 Ammonia nitrogen wastewater simulated by laboratory was used to study the flotation method to remove ammonia ammonium nitrogen generated during the precipitation of ammonium magnesium phosphate collector. The tested collectors were dodecyl fatty acid, tetradecyl fatty acid, cetyl fatty acid, sodium dodecyl sulfate and sodium oleate. The effects of different flotation pH and dosage of different agents Flotation results, the results show that the use of these five agents can achieve the removal of ammonium phosphate flotation, but different agents have different flotation effect. Sodium oleate is the best collector.