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.
出处
《环境科学》
CAS
CSSCI
CSCD
北大核心
1996年第4期47-50,共4页
Environmental Science
关键词
水处理
吸附剂
铅
电池厂
wastewater treatment,adsorbent,lead,attapulgite,cement,quartz sands,steel crumbs.
