Liquid purification or separation – With preliminary chemical manufacture
Reexamination Certificate
2002-09-09
2010-11-30
Savage, Matthew O (Department: 1797)
Liquid purification or separation
With preliminary chemical manufacture
C210S243000, C210S263000
Reexamination Certificate
active
07842182
ABSTRACT:
The invention relates to a method for treating water, especially waste water and drinking water, containing both pathogenic germs and a substance which is difficult to decompose and is from the group comprising persistent substances, endocrine substances, odorous substances, and dyestuffs, by means of ozone supply and UV radiation. The inventive method comprises the following steps: a) ozone is supplied in a concentration of between 0.1 g/m3and 15 g/m3; and b) UV rays are radiated in a wavelength range of between 200 nm and 300 nm and in a dose of between 50 J/m2and 2,000 J/m2.
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International Search Report corresponding to PCT/EP02/10083 dated Dec. 27, 2002.
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RatnerPrestia
Savage Matthew O
Wedeco AG Water Technology
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