文档介绍：改性硅藻土处理铜离子污染水试验研究
毛世春1 林舒佳1 李军1
(北京工业大学,建筑工程学院,北京,100124)
摘要:硅藻土是一种天然的低成本矿物材料。它具有许多独特的物理特性,并已被广泛用作为吸附剂在废水处理中。为了更好地理解硅藻土作为吸附剂去除铜污染废水中铜离子,本文研究了在不同条件下硅藻土吸附铜离子的效能。结果表明,pH 值是影响铜离子去除的最重要因素,在中性和弱酸性条件下,对铜离子的去除效果最佳。研究表明,在溶液中去除铜的最佳硅藻土剂量是2g,最佳吸附时间为30min。
关键词:硅藻土;铜离子;重金属污染;吸附;
STUDY ON ADSORPTION OF COPPER ION BY DIATOMITE IN THE EMERENCY
MAO Shichun, LIN Shujia, LI Jun
(College of Civil Engineering & Architecture, Beijing University of Technology, Beijing, 100124)
Abstract: Diatomite is a kind of natural low-cost mineral material. It has a number of unique physical properties and has been widely used as an adsorbent in wastewater treatment. To better understand the application of diatomite as an adsorbent for the removal of Cu(II) from heavy metal-contaminated water, in this paper, diatomite was used to adsorb Cu (II) from aqueous solution under various conditions. The results demonstrated that pH is the most important factor to the removal of copper ions .In neutral and weak acid conditions, the removal of Cu (II) is the best. Studies have shown that for the removal of Cu (II) in solution the best dosage of diatomite is 2g, the best adsorption time is 30min.
Key words: Diatomite; Cu (II); Heavy metal contamination;Adsorption;
1概述
安全供水是突发性水污染事件发生后最为敏感和紧迫的问题。目前,我国在安全供水应急处置方面还很薄弱,一旦事件发生,往往只能断水。突发性环境污染事故风险很大,不同污染物的处理技术存在很大差异,现有的少数污染物的处理经验并不能指导今后的污染事故应急处理,尤其是重金属污染。为了防患于未然,必须针对饮用