MAP法去除焦化废水氨氮  

Removal of Ammonium Nitrogen from Coking Wastewater by MAP Process

作　　者：郝瑞刚[1] 谭燕妮[1] 陈春燕[2] 

机构地区：[1]中北大学分校环境工程系,山西太原030008 [2]河北工程大学城建学院,河北邯郸056001

出　　处：《科技情报开发与经济》2006年第2期144-146,共3页Sci-Tech Information Development & Economy

摘　　要：介绍了焦化废水中氨氮的组成和MAP法去除焦化废水氨氮的原理。研究了pH值、反应温度、反应时间、沉淀时间和r(Mg2+)∶r(NH4+)∶r(PO43-)对氨氮脱除效果的影响。结果表明,在pH为9.5、水温为25℃、反应时间为20min、沉淀时间为15min、r(Mg2+)∶(rNH4+)∶(rPO43-)为1∶1∶1时对焦化废水中的氨氮有较好的去除效果。This paper introduces the composition of the ammonia nitrogen and the principle of removing the ammonia nitrogen from the coking wastewater by using MAP process, analyzes on the effects of pH value, the reaction temperature, the time of precipitation, and the ratio of Mg^2＋： NH4^＋ ：PO4^3- on the removal of ammonium nitrogen. The experimental results demonstrates that when the pH value is about 9.5 at the conditions of the water temperature of 25 ~C, the reaction time of 20 minutes, precipitation time of 15 minutes and the ratio of Mg^2＋, NH4^＋ and PO4^3- is controlled at 1：1：1, ammonium nitrogen is effectively removed.

关 键 词：焦化废水 氨氮去除率 化学沉淀 磷酸氨镁 

分 类 号：X703.1[环境科学与工程—环境工程]