合成氨废水资源化处理技术研究进展-中国环保网.PDF

第33 卷 第2 期 Vol.33 No.2 第2 期 2010 年2 月 Environmental Science Technology Feb. 2010 合成氨废水资源化处理技术研究进展 * 曾庆玲，李咏梅 ，顾国维，董秉直 （同济大学污染控制与资源化研究国家重点实验室，上海 100092） 摘 要：合成氨废水具有高氨氮的特点，高氨氮污水的治理是大家关注的焦点。文章介绍处理高氨氮废水的三种资源化回收技术， (1) 以氨水形式回收氨氮的废水处理技术；(2)将氨氮制成硫酸铵回收利用的废水治理技术；(3)既能高效脱氮又能充分回收氨氮的磷酸铵 镁(俗称鸟粪石)结晶沉淀法，其中重点介绍鸟粪石结晶沉淀法回收氨氮技术。这些废水处理技术有效地治理了高氨氮废水，具有节能减 耗、无二次污染和污染物可得到充分回收利用等特点，是处理高浓度氨氮废水的可持续发展方向。 关键词：氨氮；氨水；硫酸铵；磷酸铵镁 中图分类号：X703 文献标志码：A doi ：10.3969/j.issn.1003-6504.2010.02.023 文章编号：1003-6504(2010)02-0095-04 Resources Reuse Approaches to Synthetic Ammonia Wastewater Treatment * ZHENG Qing-ling, LI Yong-mei , GU Guo-wei, DONG Bing-zhi (State Key Lab of Pollution Control and Resource Reuse, Tongji University, Shanghai 100092, China) Abstract ：Current development of technologies for treating synthetic ammonia wastewater is reviewed with particular concerns in resource reuse from the wastewater. Three approaches are described ，including ammonia-nitrogen recovered as aqueous ammonia from the wastewater, ammonia-nitrogen converted into (NH ) SO and high efficiency both in de-ni－ 4 2 4 trification and ammonia-nitrogen recovery through struvite precipitation. Method of struvite precipitation is intensively re － counted regarding precipitant selection, dosing and the chemical reaction that leads to the precipitation which could be used in many fields. Key words ：ammonia-nitrogen; aqueo