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Ballast Water Management
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Electrochlorination
A ballast water treatment technique that generates chlorine from seawater by electrolysis to disinfect water.
UV Disinfection
A ballast water treatment method that uses ultraviolet light to render organisms non-viable without adding chemicals to the water.
Ballast Water Exchange
A method where ballast water is replaced with new water at sea, at least 200 nautical miles from the nearest shore and in water at least 200 meters deep, to reduce the number of local coastal species in the ballast tanks.
IMO Ballast Water Management Convention
International Maritime Organization (IMO) treaty requiring ships to manage their ballast water to protect aquatic ecosystems from invasive species and promoting the implementation of BWT systems.
Sediment Management
The process of managing sediment accumulation in ballast tanks, often requiring removal and proper disposal at designated facilities to prevent contamination and blockages.
Cavitation
A ballast water treatment process that uses the formation and collapse of vapor bubbles to destroy organisms. It is an emerging technology still under review.
Ballast Water Treatment System
A system installed on ships to treat ballast water and remove or neutralize organisms before discharge, involving filtration and disinfection processes.
Thermal Treatment
Using heat to increase the temperature of the ballast water to levels that are lethal for most marine organisms, thus preventing their spread.
Filtration
A pre-treatment process in ballast water management that removes solids and larger organisms from water before further disinfection treatments.
Deoxygenation
A process of reducing oxygen levels in ballast tanks to suffocate organisms present in the water. It is not commonly used due to practical challenges.
Ballast Water Record Book
A log where all ballast water operations are recorded, as part of the ship's mandatory records, evidencing compliance with ballast water management regulations.
US Coast Guard Ballast Water Regulations
Specific to the USA, these regulations establish ballast water discharge standards and requirements for BWT systems to prevent the introduction of invasive species into US waters.
Chemical Biocides
Substances added to ballast water to kill or inhibit the growth of biological organisms; usage is regulated due to environmental concerns.
Ballast Water
Ballast water is water carried in ships' ballast tanks to improve stability and balance. It is regulated to prevent the spread of invasive species between ecosystems.
Ballast Water Management Plan (BWMP)
A plan required for all ships to manage their ballast water and sediments according to a ship-specific strategy, compliant with the BWM Convention.
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