Ballast water treatment for exotic species control
OwnerLarry Russellinventor
Life of this patent
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Abstract
Systems and methods for effectively and economically annihilating non-indigenous marine species and pathogenic bacteria in ship ballast water. A preferred embodiment comprises adding a killing agent to ballast water tanks and subsequently adding a reducing agent to the container. Oxygen is subsequently introduced to the ballast water to eliminate any excess reducing agent, and to ensure compliance with the dissolved oxygen discharge requirements of the receiving water.
Claims21
A method for eliminating non-indigenous marine organisms in ship ballast water, the method comprising:
- adding sufficient amount of a killing agent to the ballast water to kill said organisms, wherein the killing agent includes a chloramine or bromamine;
- adding sufficient amount of a reducing agent to the ballast water subsequent to adding the killing agent to eliminate the killing agent;
- and
- reoxygenating the ballast water subsequent to adding the reducing agent to remove any excess reducing agent.
A method for eliminating non-indigenous marine organisms in ship ballast water, the method comprising:
- discharging the ballast water to a holding tank in a barge;
- adding sufficient amount of a killing agent to the ballast water to kill said organisms, wherein the killing agent includes a chloramine or bromamine;
- adding sufficient amount of a reducing agent to the ballast water subsequent to adding the killing agent to eliminate the killing agent;
- and
- reoxygenating the ballast water subsequent to adding the reducing agent to remove any excess reducing agent.
A method for eliminating non-indigenous marine organisms in ship ballast water, the method comprising:
- discharging the ballast water to a holding tank in a barge;
- adding sufficient amounts of aqueous ammonia or an ammonium salt, and sodium or calcium hypochlorite to the ballast water, wherein the aqueous ammonia or ammonium salt and sodium hypochlorite are in stoichiometric proportion to produce a chloramine in the ballast water and kill said or organisms;
- adding sufficient amount of a sodium bisulfite to the ballast water after the addition of aqueous ammonia or ammonium salt, and sodium or calcium hypochlorite to eliminate the chloramine;
- and
- reoxygenating the ballast water after the addition of sodium bisulfite to remove any excess sodium bisulfite.
Dependencies are inferred from the claim text.