海绵铁还原微污染源水中硝酸盐氮的影响因素研究  

Research on the influencial factors of nitrate nitrogen in micro-polluted source water by sponge iron reduction

作　　者：李婷[1] 朱易春[1] 康旭[1] 龙焙[1] 

机构地区：[1]江西理工大学建筑与测绘工程学院,江西赣州341000

出　　处：《工业水处理》2016年第11期85-89,共5页Industrial Water Treatment

基　　金：国家自然科学基金项目(51464014);江西省教育厅重点基金项目(GJJ150615)

摘　　要：饮用水源的硝酸盐氮污染是目前急需解决的重要环境问题。以人工配水为研究对象,通过静态试验研究了各因素对海绵铁去除水中NO_3^--N效果的影响。结果表明:酸洗预处理可有效提高海绵铁对NO_3^--N的去除;pH越低,NO_3^--N去除率越高;原水中NO_3^--N初始浓度越高,被还原NO_3^--N的量越多。产物分析表明:海绵铁还原NO_3^--N是产碱耗酸的反应,主要产物是氨氮,占NO_3^--N还原量的68%~83%。The pollution of nitrate nitrogen in drinking water sources is an important environmental problem that needs to be solved. Using artificial wastewater as research target,the influences of various factors on the removal of nitrate nitrogen from water by sponge iron are studied by static tests. The results show that acid pickling pre-treatment can effectively improve the NO_3^--N removal by sponge iron. The lower the pH,the higher the removing rate of nitrate nitrogen. The higher the initial concentration of nitrate nitrogen in raw water is,the more nitrate nitrogen reduced.The product analysis show that the sponge iron reduction of NO_3^--N is an alkali producing and acid consuming reaction,and the main product in the reduction reaction is ammonia nitrogen which accounts for 68%-83% of NO_3^--N reductive amount.

关 键 词：海绵铁 硝酸盐氮 微污染水 

分 类 号：X52[环境科学与工程—环境工程]