- 2 August 2007 -

Siemens introduces reactivated carbon service

Siemens Water Technologies has developed what it calls “React and Return”, a full-service reactivated carbon programme for the North American market.

Reactivated carbon is spent carbon that is recycled by being regenerated in a rotating kiln or a multiple hearth furnace. Once carbon is reactivated, it can be used in place of new virgin carbon for aqueous and vapour applications to remove organics, the company says, for customers that need to meet water quality guidelines for organic contaminant removal. Reactivated carbon is suitable for potable water, process water, and wastewater applications, and for groundwater remediation.

In the programme, activated carbons are removed from a site, reactivated, and returned for reuse to the same site. The carbon is segregated from other carbons during reactivation and storage.

“The reactivation process recovers 80 to 95% of the theoretical adsorption capacity,” says Brent Hillier, vice president of environmental services at Siemens Water Technologies. “In real world applications, clients often find that there is negligible difference between the performance of virgin and reactivated carbons.”

www.siemens.com