Testing of Filter Technologies for Treatment of Ballast Water
Abstract
A variety of filtration technologies exist on the market today which may be viable candidates for the removal of biological organisms from ships ballast water. This document presents the results of testing several types of filters at a pilot-scale facility. Filter systems tested included a disc, a screen and a media filtration system which were evaluated singly and in combination. These filters were evaluated for their relative ability to reduce particulate concentrations and biological organisms in ambient water drawn from the Gulf of Mexico. Where appropriate or necessary, the test waters were supplemented with concentrations of Arizona Test Dust to alter the total suspended solids and overall turbidity. Particle counting was used on the input and output stream of each filtration system to evaluate filter capability to remove particles. Direct enumeration of organisms in the feed water and filtrate was utilized to evaluate effectiveness in the removal of organisms. Filter systems and their combinations were evaluated over the size ranges 10-30, 50-80 and 100-200 microns. Suggestions for improving test water definitions are provided.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 2006
- Accession Number
- AD1210551
Entities
People
- D. Cruz
- E. J. Lemieux
- K. Rankin
- S. Riley
- S. Robbins
- W. Hyland
Organizations
- United States Naval Research Laboratory