公开(公告)号：US20040222162A1

公开(公告)日：2004-11-11

申请号：US10739073

申请日：2003-12-19

Applicant: Industrial Technology Research Institute

Inventor： Mao-Sung Lee ,  Wang-Kuan Chang ,  Chihpin Huang ,  Shih-Ming Yen

IPC: C02F001/52 ,  C02F001/62

CPC classification number: B01D61/145 ,  C02F1/444 ,  C02F1/52 ,  C02F1/66 ,  C02F2101/103 ,  Y10S210/911

Abstract: A method of removing arsenic from water by using a reactor that is provided with a fluidized bed of carriers is disclosed. An arsenic-containing influent is mixed in the reactor with a sulfide aqueous solution or metallic salt aqueous solution at a predetermined pH, thereby resulting in formation of crystals of arsenic sulfides or arsenic acid metal salts. The arsenic contained in the influent is thus removed by crystallization. An effluent with a reduced arsenic content is discharged from the reactor. The carriers, on which the crystals are formed, are periodically removed from the reactor which is replenished with fresh carriers immediately after.

Abstract translation: 公开了一种通过使用具有载流子流化床的反应器从水中除去砷的方法。 将含砷的流入物在预定的pH下与硫化物水溶液或金属盐水溶液在反应器中混合，从而形成硫化砷或砷酸金属盐的结晶。 因此，通过结晶除去流入物中含有的砷。 具有降低的砷含量的流出物从反应器中排出。 其上形成晶体的载体周期性地从反应器中取出，反应器立即在新鲜载体上补充。