COMBINED AIR STRIPPER/MEMBRANE VAPOR SEPARATION SYSTEMS. FINAL REPORT.
Author : J. G. Wijmans
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Page : 0 pages
File Size : 27,83 MB
Release : 1992
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Author : J. G. Wijmans
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Page : 0 pages
File Size : 27,83 MB
Release : 1992
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Author : J. G. Wijmans
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Page : 37 pages
File Size : 12,61 MB
Release : 1992
Category : Hazardous waste site remediation
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Page : 782 pages
File Size : 44,18 MB
Release : 1995
Category : Power resources
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Page : 37 pages
File Size : 26,53 MB
Release : 1992
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Air stripping is an economical and efficient method of removing dissolved volatile organic compounds (VOCs) from contaminated groundwater. Air strippers, however, produce a vent air stream, which must meet the local air quality limits. If the VOC content exceeds the limits, direct discharge is not possible; therefore, a carbon adsorption VOC capture system is used to treat the vent air. This treatment step adds a cost of at least $50/lb of VOC captured. In this program, a combined air stripper/membrane vapor separation system was constructed and demonstrated in the laboratory. The membrane system captures VOCs from the stripper vent stream at a projected cost of $15/lb VOC for a water VOC content of 5 ppmw, and $75/lb VOC for a water VOC content of 1 ppmw. The VOCs are recovered as a small, concentrated liquid fraction for disposal or solvent recycling. The concept has been demonstrated in experiments with a system capable of handling up to 150,000 gpd of water. The existing demonstration system is available for field tests at a DOE facility or remediation site. Replacement of the current short air stripping tower (effective height 3 m) with a taller tower is recommended to improve VOC removal.
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Page : 388 pages
File Size : 22,61 MB
Release : 1990
Category : Gases
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Page : 714 pages
File Size : 15,27 MB
Release : 1993
Category : Science
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Page : 972 pages
File Size : 44,43 MB
Release : 1997
Category : Environmental management
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Page : 500 pages
File Size : 39,46 MB
Release : 1993
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Page : 1832 pages
File Size : 23,17 MB
Release : 1993
Category : Government reports announcements & index
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Page : 0 pages
File Size : 20,70 MB
Release : 1990
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