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中文摘要：
利用层状双氢氧化物（LDH）合成原理,提出了即时合成LDH处理染料废水的新方法,并对其可行性进行了实验研究.其基本原理是,在废水处理中,由于Mg2＋、Al3＋水解共沉淀形成LDH,阴离子染料优先进入LDH结构层间平衡结构电荷,从而使阴离子染料以LDH沉淀的形式被去除.这一原理已通过模拟废水实验和沉淀物结构分析证实.文章探讨了反应时间、pH值、Mg/Al比值、温度对染料去除率的影响.结果表明,在常温下,最佳pH值为9.0,反应时间为2小时,Mg/Al比值为3∶1,对活性艳蓝染料的去除率效果十分显著.
英文摘要：
This article brings forward the idea of removing negative ion dye from wastewater by synthesizing Mg^2＋ , AP^＋ layer double hydroxide （LDH） in situ, using the mechanism of synthesizing LDH,and the feasibility is studied. The ultimate is,when treating with the wastewater, Mg^2＋ ,AP^＋ hydrolyze and deposit together to come into being LDH, the negative ion dye inserts into the layer space first to balance positive charge in order to be removed by the shape of LDH deposition. This mechanism is approved by the simulating wastewater experiment and the structure analysies. Removal of negative ion dye is studied from the viewpoint of reaction time, pH,Mg/A1 ratio and temperature. The result shows that, in normal temperature, when pH is 9.0. the reaction time is 2 hours, Mg/A1 ratio is 2 so that the removal efficiency of negative ion dye is the best .
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