Calgon Carbon acquired the firm Zwicky Denmark and Sweden in 2010, which had long been a distributor for Chemivron Carbon, and Calgon Carbon also purchased the stock of Hyde Marine, a company that manufacturers equipment using filtration and UV disinfection to treat marine ballast water. In 2011, the company formed by the venture of Calgon Carbon and Mitsubishi Chemical Corporation, called Calgon Carbon Japan KK (CCJ), was fully acquired by Calgon Carbon Corporation. Also in 2011 the company announced a contract with Phoenix, Arizona to provide reactivation services, and Calgon Carbon began construction on a new facility in Arizona.