Validation of Additives Used to Meet Challenge Water Criteria
Abstract
Procedures for land-based verification testing of Ballast Water Management Systems (BWMS) are referenced in the U.S. Coast Guards final rule on ballast water discharge. The International Maritime Organization (IMO) has codified similar procedures. Both procedures define minimal concentrations of dissolved and particulate organic matter (DOM and POM, respectively) and mineral matter (MM) in test water to provide an appropriate challenge for the BWMS. This report examines the additives used to meet challenge water criteria, summarizing additives proposed or in use to supplement DOM, POM, and MM. Validation efforts have primarily examined the response of organisms directly to the additives. Critically, validations should demonstrate that additives reflect materials found in natural waters and verify that (relative to natural water constituents) additives do not impact the survivability of organisms during test incubations, change organism concentrations, or make organisms more susceptible or resistant to treatment. We also recommend that the secondary impacts on organisms, such as the stimulation of bacterial growth and respiration, be examined for new additives or mixtures. Periodic testing of stock material would assure the stability of the additives.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 18, 2019
- Accession Number
- AD1086067
Entities
People
- Matthew R. First
- Scott C. Riley
- Vanessa Molina
Organizations
- United States Naval Research Laboratory