A STUDY OF WASTEWATER HANDLING, HOLDING AND DISPOSAL FROM WASHINGTON STATE FERRIES

Alternatives to control wastewater oders on board Washington State ferries and during discharge of the wastewater to sewerage systems were formulated, evaluated and tested. Holding tank aeration, using compressed air injection to a recycle line is an effective method. Sulfide is microbially oxidized, and anaerobic sulfate reducting bacteria are suppressed. Engineering and lab studies and a simulation model of the process were used to estimate suitable design parameters and costs. A prototype installation is recommended for optimization of operation. The addition of slug dosages of H202 was also found to be effective in laboratory and on-board vessels. The twice daily dose of about 50 mg/1 should be stirred into the holding tank using recycle mixing. Peroxide was found to oxidize sulfide, increase dissolved oxygen and suppress sulfate reducing bacteria. Other alternatives, including chlorine addition, pH increase, iron sulfide precipitation and toxic odor control compounds, were found ineffective and/or uneconomic.

• Record URL:
  http://www.wsdot.wa.gov/research/reports/fullreports/027.1.pdf
• 
• Supplemental Notes:
  • Also pub. as Washington State Dept. of Highways, Olympia Research Program report 27.1. Sponsored in part by Federal Highway Adminstration, Washington, D.C.
• Corporate Authors:

  University of Washington, Seattle

  Department of Civil and Environmental Engineering, P.O. Box 352700
  Seattle, WA  United States  98195-2700

  Washington State Department of Highways

  Highway Administration Building
  Olympia, WA  United States  98501

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Ferguson, J F
  • Parrish, K B
  • Browne, D W
  • Lellilid, S
  • Sylvester, R O
• Publication Date: 1977

Media Info

• Pagination: 124 p.

Subject/Index Terms

• TRT Terms: Aeration; Container tanks; Ferries; Marine transit; Sewage holding tanks; Sewage treatment; Ships
• Old TRIS Terms: Holding tanks; Shipboard sewage treatment
• Subject Areas: Environment; Marine Transportation; Public Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00167335
• Record Type: Publication
• Source Agency: National Technical Information Service
• Files: TRIS, USDOT, STATEDOT
• Created Date: Sep 27 1978 12:00AM