Method of arsenic immobilization in crystalline form from water

Details Method of arsenic immobilization in crystalline form from water Method of arsenic immobilization in crystalline form from water

2006-05-16

2006-05-16

Hruskoci, Peter A. (Department: 1724)

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

C210S638000, C210S639000, C210S724000, C210S911000, C423S087000, C423S561100

Reexamination Certificate

active

07045066

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.

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