Combination Technologies for Ballast Water Treatment
This proposal continues and expands a project begun in 2000 involving the testing of a variety of technologies for ballast water treatment aboard a vessel in Baltimore Harbor owned by the U S. Maritime Administration. The focus of the current proposal is on combination technologies, specifically UV irradiation and biocide dosing (in series) of ballast water during a ballasting operation, primary filtration (using a depth filter & separator) used in tandem with UV irradiation and primary filtration, UV irradiation and biocide dosing used together.
We hypothesize that combination technologies can improve the costeffecffveness of ballast water treatment through the synergistic effects of UV and biocide exposure, and that filtration to 5O micrometer will significantly reduce the concentratffon of biocide required for effective control.
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David A. Wright and Rodger Dawson
Chesapeake Biological Laboratory
University of Maryland Center for Environmental Science
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