Comprehensive utilization of arsenic-containing acidic waste from smelters
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Currently, the lime method is used to remove arsenic, which generates a large amount of waste residue; dealing with this residue poses a problem. Is there any treatment process that does not produce residue?
As far as I know, the common methods for removing arsenic include coagulation, adsorption, ion exchange, and membrane separation. Coagulation and adsorption also present issues related to the disposal of arsenic-containing sludge, while ion exchange involves the discharge of regeneration liquid, and membrane separation requires handling of concentrated waste streams. If there is a market for arsenic-containing concentrates that can be recycled, membrane technology could be an option.