Method for removing contaminant trace species, especially...

Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...

Reexamination Certificate

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C210S717000, C210S721000, C210S758000, C210S908000, C210S911000

Reexamination Certificate

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07947183

ABSTRACT:
A method and a device for purifying water from contaminant trace species, especially arsenic, by co-precipitating trace species during oxidation and precipitation of iron compounds with subsequent separation. The co-precipitation is improved by contacting the water with an iron-containing material prior to oxidation to increase the iron content of the water. Arsenic and other trace species harmful to health may be removed from water effectively and in a simple manner, thus being able to comply with the more restrictive limits of arsenic in drinking water.

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