Method for killing organisms in the course of conveying...

Details Method for killing organisms in the course of conveying... Method for killing organisms in the course of conveying...

2007-09-04

2007-09-04

Savage, Matthew O. (Department: 1724)

Liquid purification or separation

Processes

Utilizing electrical or wave energy directly applied to...

C210S759000, C210S760000, C210S764000, C205S701000, C205S756000

Reexamination Certificate

active

10864966

ABSTRACT:
The present invention relates to gaseous discharge and applied biotechnology. In particularly, the present invention relates to a method for killing organisms in the course of conveying ballast water in ship, comprising applying a voltage with frequency of 400-40000 Hz between the anode electrode and the cathode electrode of the free radical generator, thereby forming strong ionization discharge of electric field strength of 250-600 Td between the anode electrode and the cathode electrode, ionizing, dissociating, and exciting O2and H2O, or O2, processing into active particles comprising O3, OH. and HO2, dissolving excitedly to obtain free radical solution mainly consisted of OH, adding the free radical solution to conveying pipeline of ballast water, conveying for 2-20 s in the pipeline, thereby killing organisms of ballast water selected from the group consisted of bacteria, single cell alga, and protozoan.

REFERENCES:
patent: 6125778 (2000-10-01), Rodden
patent: 6171508 (2001-01-01), Browning, Jr.
patent: 6402965 (2002-06-01), Sullivan et al.
patent: 6761123 (2004-07-01), Husain et al.
patent: 6773607 (2004-08-01), Russell
patent: 7008596 (2006-03-01), Rump et al.
patent: 2003/0015481 (2003-01-01), Eidem
patent: 2003/0196967 (2003-10-01), Robinson et al.
Report: “Ozone, Seawater and Aquatic Nonindigenous Species: Testing a Full-Scale Ozone Ballast Water Treatment System on an American Oil Tanker” William J. Cooper et al., May 6, 2002.
“Challenges in global ballast water management” Marine Pollution Bulletin 48, 2004.

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