Press Release

Hyde Marine Awarded Three Contracts for Hyde GUARDIAN® Ballast Water Management Systems

PITTSBURGH, PA  –  05/23/2011

Calgon Carbon Corporation (NYSE: CCC) announced today that its wholly owned subsidiary, Hyde Marine, Inc., has been awarded three contracts to supply a total of 13 Hyde GUARDIAN® Ballast Water Treatment (BWT) Systems for use on various vessels. The chemical free Hyde GUARDIAN BWT process uses filtration and ultraviolet disinfection to treat ships’ ballast water to prevent the spread of invasive species from port to port.

The Zhejiang Ouhua Shipbuilding Co., Ltd., located in Zhoushan, selected Hyde Marine to supply eight multi-purpose vessels for the China Navigation Co., Ltd., the deep sea shipping arm of John Swire & Sons, Ltd. The Hyde GUARDIAN systems for the China Navigation vessels will have a treatment capacity of 500 m3/hr and will be delivered for installation beginning in April 2012.

Separately, Hai Cheung Trading HK, Ltd., Hyde Marine’s Distributor in the Chinese market, will supply Hyde Model HG300 systems for the Taizhou Kouan Shipbuilding Co., Ltd. The units, which will have a treatment capacity of 300 m3/hr, will be installed on three 1100TEU container vessels for the Norwest Shipping Agencies Pte, Ltd. The Hyde GUARDIAN systems are scheduled for delivery beginning in September 2011.

Hai Cheung Trading HK, Ltd., will also deliver two Hyde GUARDIAN Model HG100 systems for Guangzhou Huangpu Shipbuilding Co., Ltd. The systems will be used on two 14,000 kw Pelagic Rescue Ships for the Bureau of Rescue and Salvage, Ministry of Transport of PRC. The Hyde GUARDIAN systems will have a treatment capacity of 100 m3/hr and delivery is expected to begin in January 2012.

The Hyde GUARDIAN unit received International Maritime Organization (IMO) Type Approval in April 2009 and was the first BWT System accepted into the U.S. Coast Guard’s Shipboard Technology Evaluation Program (STEP). Calgon Carbon’s UV Technology Division and Hyde Marine also recently received ISO 9001:2008 accreditation from the registrar Det Norske Veritas (DNV) and the ANAB National Accreditation Board in 2010.

In commenting on this contract, James A. Sullivan, vice president of Calgon Carbon, said, “The Hyde GUARDIAN contracts represent another example of Calgon Carbon’s continuing commitment to provide the maritime industry with the leading ballast water treatment systems, and they further position us as a leader in the growing ballast water treatment market.”

For more information about Hyde Marine ballast water management solutions, visit www.hydemarine.com.

Calgon Carbon Corporation, headquartered in Pittsburgh, Pennsylvania, is a global leader in services and solutions for making water and air safer and cleaner. For more information about Calgon Carbon’s leading activated carbon and ultraviolet technology solutions for municipalities and industries, visitdev.calgoncarbon.com.

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