改性沸石去除氨氮和有机物的研究  

Study on Ammonia-nitrogen and Organics Removal Using Modified Zeolites

作　　者：夏丽华[1] 董秉直[1] 高乃云[1] 常春[1] 

机构地区：[1]同济大学污染控制与资源化国家重点实验室,上海200092

出　　处：《同济大学学报（自然科学版）》2005年第1期78-82,共5页Journal of Tongji University:Natural Science

基　　金：国家'八六三'高技术研究发展计划资助项目 (2 0 0 2AA60 113 0 ) ;国家科技攻关计划重大资助项目 (2 0 0 3BA80 8A17)

摘　　要：研究了不同改性条件下 ,沸石去除氨氮和有机物的效果 .试验着重考察有机物对去除氨氮的影响以及钙离子对氨氮和有机物去除效果的影响 .结果表明 ,改性沸石对氨氮有很好的去除效果 ;酸浸沸石的处理效果明显优于碱浸沸石 ;当有机物含量较高时 ,会降低去除氨氮的效果 ;酸浸沸石对有机物有一定的去除效果 ,而碱浸沸石去除效果很差 ;水中钙离子的存在 ,在一定程度上会降低氨氮的去除效果 ,但同时提高有机物的去除效果 ;沸石主要去除大相对分子质量的有机物 ,对小相对分子质量的有机物去除效果很差 .The effect of zeolite on removal of ammonia-nitrogen and organics was evaluated in the condition of different modified methods.The experiment was focused on the effect of organics on removing of ammonia-nitrogen and influence of Ca 2+ on removal of ammonia-nitrogen.It was found that modified zeolite was effective in removal ammonia-nitrogen.Higher removal efficiency was obtained by acid-modified zeolite than by base-modified zeolite.Higher content organics could decrease the removal of ammonia-nitrogen.The removal efficiency of organics was limited for acid-modified zeolite and poor for base-modified zeolite.When calcium existed in water,the removal of ammonia-nitrogen was decreased to a limited extent,with a higher organic removal.Zeolite removes organics with large molecular weight effectively and has poor efficiency for lower molecular weight.

关 键 词：沸石 氨氮 有机物 钙离子 吸附 

分 类 号：TU991.26[建筑科学—市政工程]