摘要
经过脱氮药剂筛选,发现具有很好表面吸附能力以及很强水化作用的水泥对渗滤液总氮具有很好的去除效果。间歇式小试验研究表明,水泥脱氮率可达到55%,脱氮效果与水灰比密切相关,低水灰比更有利于总氮的去除。通过添加一定量的改性剂Fe2O3、MgO后,水泥对TN的去除有较明显改善;与聚硅酸镁配合使用,在较低水灰比条件下,TN去除率也有一定的提高。
Through the fungicide selection , the cement shows the best result for removing TN in laodfill leachatc treated by biological processes on its capability of surface adsorption and hydration reaction. In lab scale, the removal rate of TN can reach 55%. Lower ratio of water/cement led to lower removal rate of TN. The treatment effect of high water cement ratio can be improved to some degree by adding Fe2O3,MgO and polymerized silicate containing magnesium salt, even in a low ratio of water/cement..
出处
《有色冶金设计与研究》
2009年第6期88-90,94,共4页
Nonferrous Metals Engineering & Research
关键词
水泥
渗滤液
水化反应
总氮
cement
landfill leachate
hydration reaction
total nitrogen
