C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 1/50 (2006.01) A01N 37/16 (2006.01) A01N 59/00 (2006.01) A01P 5/00 (2006.01) A01P 7/00 (2006.01) C02F 1/72 (2006.01)
Patent
CA 2291519
The process according to the invention prevents the transfer of harmful organisms of zooplankton, including the epifauna thereof, and of phytoplankton including the resting stages thereof, which are taken up with the ballast water of ships at one location and discharged in another. According to the invention, the organisms are substantially destroyed by the addition of an agent containing a water--soluble percarboxylic acid with 1 to 6 carbon atoms, particularly an aqueous solution containing peracetic acid and/or performic acid and hydrogen peroxide, in a quantity of 0.1 to 200 mg of percarboxylic acid per litre of ballast water, to the ballast water and allowing it to react before discharge. According to a preferred embodiment, a cyanide is added to the ballast water in addition to the percarboxylic acid.
Fuchs Rainer
Huss Michael
Werle Peter
Degussa-Huls Aktiengesellschaft
Evonik Degussa Gmbh
Marks & Clerk
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