晶析辅助化学沉淀法的研究  

Research on Crystallization-combined Chemical Precipitation Process

作　　者：时鹏辉[1] 田好敏[1] 李兰西 

机构地区：[1]河南城建学院,河南平顶山467044 [2]平顶山环境监测中心站,河南平顶山467001

出　　处：《中国环保产业》2009年第3期41-43,共3页China Environmental Protection Industry

摘　　要：在用化学沉淀法处理高浓度氨氮废水的基础上,引入晶析辅助化学沉淀法的思路,即将晶种投加到反应器中,然后从氨氮去除率、生成晶体的粒型、粒径三个方面分析不同晶种对生成晶体的影响,并对生成的磷酸铵镁晶体进行X光衍射分析。得出结论:投加晶种有利于提高氨氮的去除率,但不会明显提高生成晶体的粒径。Based on treatment of high concentration ammonia-nitrogen wastewater by chemical precipitation process, the paper introduces the idea of crystallization-combined chemical precipitation process by choosing activatied zeolite, activated clay and activation coal ash as crystal seed, and review ammonia-nitrogen wiping off rate, particle type and particle diameter. At the same time, observes component of the crystal using X ray diffraction. The result, adding crystal seed, is good for ammonia-nitrogen wiping off rate, but is bad for forming big particle diameter crystal.

关 键 词：晶析 化学沉淀法 氨氮废水 

分 类 号：X703[环境科学与工程—环境工程]