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Hong Kong screening plant successfully uses Purafil, Inc. and dry-scrubbing technology for the first time

By Anonymous

DORAVILLE, Ga.—A screening plant in Hong Kong successfully used Purafil, Inc. and dry-scrubbing technology for the first time. Purafil, the leading manufacturer of gas-phase air filtration systems, installed a Purafil ESD Drum Scrubber-100 (DS-100) and a VS12 vessel scrubber to remove odors and hydrogen sulfide (H2S) from the environment. Sixty days after installation, results from third-party lab tests indicated that Purafil’s systems removed more than 99.97 percent of H2S, which exceeded the target removal rate of 99.5 percent.

Gases emitted from the Wanchai West Preliminary Screening Plant caused odor problems at several high-profile buildings located about one mile from the plant. The district court and the departments of immigration, inland revenue and lands tribunal complained about odors, as did the five-star deluxe Grand Hyatt Hotel and the Hong Kong Convention Center, where all high-profile governmental conferences and exhibitions take place.

Engineers from the plant unsuccessfully tried to remove the odors with a wet scrubber. When this attempt failed, they decided to test the abilities of a dry scrubber despite their lack of experience with this kind of system. Purafil’s DS-100 was placed in the wet well preceding the main plant. The custom-built VS12, which contained Puracarb™ dry-scrubbing media, was installed at an inlet with H2S concentrations of 15 parts per million.

Plant engineers were very pleased with the project and more readily embraced the idea of using dry scrubbers.

Purafil specializes in the removal of corrosive, odorous and toxic gases from commercial, industrial and municipal environments. Purafil established the Environmental Systems Division in 1987 in response to a growing demand for high-efficiency odor control systems at pump stations, force mains and other wastewater operations.



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