LETTERS Oil desulfurization Dear Sir: I read with interest the excellent article on desulfurization refinery capacities ( E S & T . June 1973, pp 494-6). I t is only natural, however, that we were disappointed in not finding McKee among the engineering and construction firms mentioned in the article. Particularly as M c K e e is the prime contractor furnishing engineering and construction services for Lago Oil & Transport Co.’s desulfurization project in Aruba, Netherlands Antilles. This $100 million project will double the output of low-sulfur industrial fuel oil at Lago’s petroleum refinery in Aruba. Lago Oil & Transport Co. is a wholly owned subsidiary of Exxon Corp.
R. A. Leighton Director, Marketing Communications Arthur G. McKee & Co. Cleveland, Ohio 44131 Physical-chemical treatment Dear Sir: The article on physicalchemical treatment at Reichhold in the M a r c h issue (page 200) is very thorough and informative. However, I have one minor concern. That concern stemmed from the first paragraph, which I felt may lead some of your readers to assume that the Reichhold system is the first of its kind in industry. I t is really the latest of a series of waste water adsorption treatment systems. Some of the others include: Stepan Chemical Co., Fieldsboro, N.J. -reduces detergent wastes measured as COD f r o m an average of 28,000 m g / l . to 1000 m g / l . and TOC from an average of 6310 m g / l . to 289 mg,’l. Atlantic-Richfield Co., Watson Refinery, Los Angeles, Calif. -reduces refinery wastes measured as COD from 250 m g / l . to 37 m g / l . Stephen-Leedom Carpet Co., Southampton, Pa. -removes organic dyes from 80% of its waste water and reuses this water in its dyeing operation General Electric Co., Pittsfield, Mass.-uses a mobile granular carbon unit to remove fluorescein green dye and other dissolved organics Chipman Division of Rhodia, Inc., Portland, Ore. -reduces chlorinated phenolics from 100 m g / l . to a maximum of 1.O m g / l . While these are not all straightforward physical-chemical treatment systems, they do demonstrate the ability of granular activated carbon to handle a variety of dissolved organic contaminants in waste water.
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Environmental Science & Technology
AI Gaber
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