Siemens Energy, Inc.

Siemens Water Technologies Pte. Ltd.

Robert J Wenta

Thomas J Vollstedt

John A Meidl

Joseph E Zuback

Chad L Felch

Joseph Edward Zuback

Bryan J Kumfer

Michael Howdeshell

Duane R Smith

Todd Wingers

Kurt M Knuth

Thomas E Schulz

Lori Marten

A water treatment system () utilizing granular activated carbon (GAC) for the removal of organic contaminants in a process water circuit (), and including a carbon regeneration circuit () in fluid communication with the process water circuit. The carbon regeneration circuit may include a dedicated regeneration vessel (), or the regeneration process may proceed within a GAC/water contactor () of the process water circuit. A process is described wherein spent GAC from the water treatment system is regenerated within the system with an oxidation process that minimizes damage to the carbon granules.

Water treatment system with carbon regeneration circuit

The invention is directed to a method and apparatus for treating wastewater. The wastewater treatment system includes a bioreactor including activated carbon and a first biological population. The wastewater treatment system may also include a membrane bioreactor and/or a wet oxidation unit.

Wastewater treatment system

Growing community of inventors

Wisconsin Rapids, WI, United States of America

Robert J Wenta