AT－SS复合颗粒吸附剂的制备和除铅性能研究  

Preparation of Compound Granulated Adsorbent of Attapulgite and Studies on Its Adsorbability to Lead

作　　者：秦非[1] 许鸥泳 蒋挺大[1] 

机构地区：[1]南京大学环境科学与工程系,中国科学院生态环境研究中心

出　　处：《环境科学》1996年第4期47-50,共4页Environmental Science

摘　　要：通过颗粒吸附剂在含铅溶液中的振荡实验．研究了凹凸棒石粘土（ＡＴ）和钢渣（ＣＳ）、水泥（ＳＮ）、石英砂（ＳＳ）制得的多种复合颗粒吸附剂的除铅性能及制备条件．确定出最佳颗粒吸附剂为ＡＴ－ＳＳ，混合比为５：１，７００℃下焙烧１２０ｍｉｎ．对铅的静态吸附容量高达５００ｍｇ／ｇ以上，动态吸附容量为６０ｍｇ／ｇ．在１．５ｍｌ／ｍｉｎ的流速下，穿透时间为２０ｈ，洗脱回收率为４８．３％．当Ｐｂ进样量为２００ｍｇ／Ｌ时，ＡＴ－ＳＳ吸附剂在２３６倍床体积之内，流出液浓度低于排放标准．The granulated adsorbent of Attapulgite(AT)with some additive which includes cement(SN),quartz sands(SS) and steel crumbs(CS) was researched in order to produce a practical adsorbent for removal of lead in the waste water.The manufacture progress of granulated adsorbent and its adsorbability were discussed in detail.Optimum adsorbent is AT-SS among adsorbent of AT-SS、AT-SN and AT-CS.It has a copacity of adsorbing lead of 500 mg/g under the static conditions and of 60 mg/g under the dynamic conditions when it was manufactured at a AT-SS mixing ratio of 5:1 and by roasting at a temperature of 700℃ for 120 min.The penetration time is 20 h and the regeneration rate is 48.3% with the current velocity of 1.5 ml/min.The Pb concentration of effluence is lower than standard within 236 times bed volume at the intake concentration of 200 mg/L.

关 键 词：水处理 吸附剂 铅 电池厂 

分 类 号：X770.3[环境科学与工程—环境工程]