73-13: Fuildized Moving Bed Ion Exchange for Treatment of Cooling TowersDuring recent years, various pollution agencies have been setting standards on chromate discharge levels in cooling tower blowdown. These standards range from complete elimination of chromates to low effluent levels requiring the installation of elaborate and costly treatment systems which reduce and precipitate the chrome. In the early 1960's, the inclusion of chromates in blowdown was recognized as objectionable not only from an ecological