Shipboard Sewage Treatment System for Great Lakes Vessels
Abstract
Two sewage treatment systems aboard Great Lakes iron ore carriers were evaluated: A Chlorinator-Macerator System aboard SS EDWARD B. GREENE, and a BIOGEST '25' System aboard SS WALTER A. STERLING. The systems had been installed in 1962 and 1960, respectively. The lack of trained shipboard operating personnel caused termination of the BIOGEST evaluation. The Chlorinator- Macerator evaluation revealed a need for a system with improved operational characteristics. The Chlorinator-Macerator System was modified to utilize ozonation followed by small additions of sodium hypochlorite solution to complete disinfection and provide a slight chlorine residual. It was designed to (1) minimize manpower operating requirements; (2) simplify maintenance, troubleshooting, and repair; (3) require little logistical support; and (4) interface with existing shipboard piping and electrical systems while complying with the U.S. Environmental Protection Agency's Type-II marine sanitation device Effluent Quality Standards. The new prototype Blackwater Treatment System was evaluated in 1975 and 1976. The system produced effluent within U.S. Environmental Protection Agency Standards for a Type-II marine sanitation device. Design drawings for a prototype treatment system for further development are included.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1979
- Accession Number
- ADA075243
Entities
People
- Alexander E. Lardis
- Craig S. Alig