BALLAST TREATMENT EFFLUENT DISPOSAL PROBLEM IN PORT VALDEZ, ALASKA

The problem of disposal of the effluent from the ballast treatment plant at the Alyeska Pipeline terminal facility is reviewed. Baseline data were obtained on physical circulation and dispersion, flushing rates of the Port, primary productivity rates and effects of crude oil on these rates, biodegradation rates of hydrocarbons, benthic biology and sedimentary geology. It was determined that a diffuser system for the effluent containing less than 10 ppm hydrocarbons would require a 50-100 fold dilution within 20 ft of the outfall to give an environmental concentration of less than 0.05 ppm within 500 meters of the outfall. A concentration of hydrocarbons of less than 0.05 ppm was found to be non-inhibitory to photosynthesis of indigenous phytoplankton. One organism tested had somewhat higher tolerance levels. Biodegradation of the hydrocarbon in addition to mixing and flushing of the Port led to a prediction of a maximum of less than 5 ppb concentration of hydrocarbons in the Port as a steady state concentration during operation of the facility.

  • Supplemental Notes:
    • Cost of entire Proceedings is $25.00.
  • Corporate Authors:

    Marine Technology Society

    5565 Sterrett Place, Suite 108
    Columbia, MD  USA  21044
  • Authors:
    • Hood, D W
  • Publication Date: 1974-9

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Filing Info

  • Accession Number: 00071899
  • Record Type: Publication
  • Source Agency: Marine Technology Society
  • Report/Paper Numbers: Proceeding
  • Files: TRIS
  • Created Date: Nov 12 1974 12:00AM