海泡石去除焦化废水性能的的研究.doc

XX：海泡石去除焦化废水性能的研究安徽工程科技学院毕业论文 2 1 -毕业设计（论文）材料之二（1） 编号：200 —JX15— — 安徽工程科技学院本科生毕业设计（论文）专 业： 环境工程 题 目：海泡石去除焦化废水性能的研究 作 者 姓 名： XXXX 导师及职称： XXXX 讲师 导师所在单位： 生化系 2007年 06 月 15 日海泡石去除焦化废水性能的研究摘 要海泡石是一种纤维状含水的镁硅酸盐矿石，具有良好的吸附性能。海泡石是一种富镁纤维状硅酸盐粘土矿物，它的用途十分广泛。由于其比表面大，仅次于活性炭，因此在吸附方面会有较好的效果。焦化废水的组分异常复杂，是较难处理的废水之一。本文研究了经过H2SO4改性海泡石对焦化废水中的挥发酚和氨氮的吸附性能， 通过静态吸附实验考察了各种条件对吸附效果的影响，包括初始浓度、pH值、吸附时间和吸附温度。通过活化海泡石对挥发酚、氨氮的吸附正交实验，选择了最佳吸附条件为：挥发酚：振荡时间为25min，初始浓度为20mg/l，投加量为0.2g，pH值为6；氨氮：振荡时间为40min，初始浓度为200mg/l，投加量为0.3g，pH值为4，以及通过在室温下的静态吸附，绘制了海泡石的吸附等温线，求得其最大吸附量为：挥发酚：5.45mg/g；氨氮： 通过本课题的研究得出活化海泡石对焦化废水中的挥发酚、氨氮有较高的去除率，吸附去除率可达到60%—70%,因此海泡石作为环境保护中的吸附剂和催化剂载体具有广阔的应用前景。 关键词: 海泡石；吸附；挥发酚；氨氮；The research on removes the coking waste water by SepioliteAbstractSepiolit is a fibrous natural hydtated magnesium silicate with good absorptive property. The sepiolite is one kind of rich magnesium fibrous silicate clay mineral， its use is extremely widespread. Because its relative surface is big and only inferior in the activated charcoal， so the sepiolite have the good effect in the adsorption aspect. The coking waste water with extreor dinary complicated components is one of the waste water difficult to be treated . This article has studied the sepiolite by H2SO4 modified to the phenol and ammonia nitrogen in coking wastewater adsorption performance. And inspected each kind of condition to adsorb the effect the influence, including initial concertration, pH value ,adsorption time and adsorption temperature through the static adsorption experiment. Then has carried on the activation sepiolite to phenol and ammonia nitrogen adsorption orthogonal experiment and has chosen the best adsorption condition: the phenol ：the oscillated time is 25min，the initial concertration is 20mg/L,the dosage is 0.2g,the pH value is 6;the ammonia nitrogen ：the oscillated time is 40min