Accession Number : ADA323603

Title :   Stripping Volatile Organic Compounds and Petroleum Hydrocarbons from Water by Tray Aeration.

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Personal Author(s) : Labranche, David F. ; Collins, M. R.

PDF Url : ADA323603

Report Date : MAR 1997

Pagination or Media Count : 22

Abstract : Volatile organic compounds (VOCS) and petroleum products are ubiquitous groundwater contaminants. Petroleum products, e.g., diesel fuel, contain a wide array of volatile, semivolatile, and long chain hydrocarbon compounds. This research sought to determine whether air stripping can provide a site specific treatment solution for petroleum contaminated groundwaters and to document the abilities and limitations of tray type (Shallow Tray) air stripping technology. Full factorial experimental trials were conducted to determine the influence of inlet water flow rate and temperature on trichloroethylene (TCE), perchloroethylene (PCE) and total petroleum hydrocarbon (TPH) removal. As expected, TPH removal controlled air stripper performance, and liquid temperature affected removal more than flow rate. The mass transfer rate of TCE and PCE from water to air was controlled by the compound's volatility, while the TPH mass transfer rate was controlled by the compound's concentration gradient. Results indicate that economical air stripping of VOC and TPH compounds can be achieved using low liquid flow rates (20-75 L/min) and medium liquid temperatures (16-28 deg C) in tray type air strippers.

Descriptors :   *WATER TREATMENT, *WATER POLLUTION, *AERATION, GROUND WATER, FLOW RATE, HYDROCARBONS, CONTAMINANTS, VOLATILITY, DIESEL FUELS, PETROLEUM PRODUCTS, TRICHLOROETHYLENE, WATER POLLUTION CONTROL EQUIPMENT.

Subject Categories : Industrial Chemistry and Chemical Processing
      Water Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE