公开(公告)号：US20130228522A1

公开(公告)日：2013-09-05

申请号：US13768477

申请日：2013-02-15

申请人： BROWN UNIVERSITY, BROWN TECHNOLOGY PARTNERSHIP

发明人： Joseph Calo ,  Madhavan Lakshmi ,  Johannes Kirchner ,  Euan Bain

IPC分类号： C02F1/68

CPC分类号： C02F1/68 ,  B01D15/08 ,  B01D15/1807 ,  B01D15/1892 ,  B01D15/206 ,  B01D15/22 ,  B01D15/26 ,  B01D24/36 ,  B01J20/0229 ,  C02F1/281 ,  C02F1/683 ,  C02F1/705 ,  C02F2101/103 ,  C02F2303/08

摘要： A system is provided for removing arsenic from water to safe levels at or below the EPA standards. The system is a hybrid spouted vessel/fixed bed filter system that significantly enhances/improves arsenic removal for drinking water using zero-valent iron (ZVI) particles. Movement of the circulating, iron-containing particles in a dense moving bed that forms on the spouted vessel bottom creates an abrasive “self-polishing” action among them that continuously generates colloidal iron corrosion products. This material then circulates with the water in the vessel and is removed and concentrated in a fixed bed filter. The colloidal material captured and immobilized in the filter has been shown to remove arsenic from contaminated water at very rapid rates.

摘要翻译： 提供了一种系统，用于将砷从水中除去，达到或低于EPA标准的安全水平。 该系统是使用零价铁（ZVI）颗粒显着增强/改善饮用水的砷去除的混合喷射容器/固定床过滤系统。 循环的含铁颗粒在形成在喷射容器底部的致密移动床中的运动在它们之间产生了磨擦性的“自抛光”作用，其中不断产生胶体铁腐蚀产物。 然后该材料与容器中的水循环，并将其移出并浓缩在固定床过滤器中。 捕获并固定在过滤器中的胶体材料已被证明以非常快的速率从污染的水中除去砷。