Combined air stripper/membrane vapor separation systems. [Volatile organic compounds]

Technical Report · Sun Nov 01 00:00:00 EST 1992

DOI:https://doi.org/10.2172/6744995· OSTI ID:6744995

Wijmans, J G; Baker, R W; Kamaruddin, H D; Kaschemekat, J; Olsen, R P; Rose, M E; Segelke, S V

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.

• Research Organization: Membrane Technology and Research, Inc., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6744995
• Report Number(s): DOE/CH-9209; ON: DE93009354
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
54 ENVIRONMENTAL SCIENCES
GROUND WATER
DECONTAMINATION
MEMBRANES
ORGANIC COMPOUNDS
REMOVAL
AIR
EXPERIMENTAL DATA
NUCLEAR FACILITIES
PROGRESS REPORT
REMEDIAL ACTION
SEPARATION PROCESSES
STRIPPING
US DOE
CLEANING
DATA
DIRECT REACTIONS
DOCUMENT TYPES
FLUIDS
GASES
HYDROGEN COMPOUNDS
INFORMATION
NATIONAL ORGANIZATIONS
NUCLEAR REACTIONS
NUMERICAL DATA
OXYGEN COMPOUNDS
TRANSFER REACTIONS
US ORGANIZATIONS
WATER
054000* - Nuclear Fuels- Health & Safety
540250 - Environment
Terrestrial- Site Resource & Use Studies- (1990-)
540220 - Environment
Terrestrial- Chemicals Monitoring & Transport- (1990-)