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:
- Also pub. as Washington State Dept. of Highways, Olympia Research Program report 27.1. Sponsored in part by Federal Highway Adminstration, Washington, D.C.
University of Washington, SeattleDepartment of Civil and Environmental Engineering, P.O. Box 352700
Seattle, WA United States 98195-2700
Washington State Department of HighwaysHighway Administration Building
Olympia, WA United States 98501
Washington, DC United States 20590
- Ferguson, J F
- Parrish, K B
- Browne, D W
- Lellilid, S
- Sylvester, R O
- Publication Date: 1977
- Pagination: 124 p.
- TRT Terms: Aeration; Ferries; Marine transit; Sewage holding tanks; Sewage treatment; Ships; Tanks (Containers)
- Old TRIS Terms: Holding tanks; Shipboard sewage treatment
- Subject Areas: Environment; Marine Transportation; Public Transportation; Vehicles and Equipment;
- Accession Number: 00167335
- Record Type: Publication
- Source Agency: National Technical Information Service
- Files: TRIS, USDOT, STATEDOT
- Created Date: Sep 27 1978 12:00AM