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Method for destruction of toxic substances with ultraviolet radiation

  • US 5,144,146 A
  • Filed: 04/11/1991
  • Issued: 09/01/1992
  • Est. Priority Date: 07/06/1990
  • Status: Expired due to Fees
First Claim
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1. A process for the destruction of toxic substances in a medium by means of ultraviolet radiation in which the medium is subjected to a band of ultraviolet radiation of high spectral density, said band lying within the wavelength range of 175 to 360 nanometers, said ultraviolet radiation being pulsed at a pulse repetition rate of at least about 5 Hertz, in which the ratio of root-mean-square power to average power of said ultraviolet radiation lies in the range of 10:

  • 1 to 100;

    1, and the ratio of peak power to average power delivered by said ultraviolet radiation lies in the range of 1,000;

    1 to 10,000;

    1, said ultraviolet radiation having an average power density of at least about 0.1 Watt/centimeter2.

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