| AT-SS复合颗粒吸附剂的制备和除铅性能研究 |
| 摘要点击 636 全文点击 753 投稿时间：1996-04-03 |
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| 中文关键词 水处理 吸附剂 铅 |
| 英文关键词 wastewater treatment adsorbent lead attapulgite cement quartz sands steel crumbs |
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| 中文摘要 |
| 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。 |
| 英文摘要 |
| 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. |
