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Patent Searching and Data

Document Type and Number:
Japanese Patent JP2001509729
Kind Code:
A method and apparatus for treating ship ballast water before it is discharged into coastal waters. The ballast water may contain a generalized and diverse species population of harmful non-indigenous microorganisms. Before discharge, the ballast water is oxygenated and deoxygenated to reduce the populations of anaerobic and aerobic microorganisms, respectively. If anaerobic microorganisms are of no concern, the oxygenation step can be eliminated. Also, a method and apparatus for treating large volumes of any water, to reduce the population of a wide spectrum of diverse species of microorganisms wherein the water is deoxygenated, and then held in a sealed space for a period of time until the aerobic population has been reduced.

Browning, Wilson Jay., Jr.
Application Number:
Publication Date:
July 24, 2001
Filing Date:
November 10, 1997
Export Citation:
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Browning Transport Management, Inc.
International Classes:
B63B11/04; C02F1/20; C02F1/58; C02F1/70; C02F1/74; (IPC1-7): C02F1/20; C02F1/58; C02F1/70
Attorney, Agent or Firm:
Shin Koizumi (2 outside)