Method for treatment against corrosion and depositions in...

Liquid purification or separation – Processes – Preventing – decreasing – or delaying precipitation,...

Reexamination Certificate

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Details

C210S739000, C210S743000, C422S003000, C422S018000

Reexamination Certificate

active

07135118

ABSTRACT:
The invention concerns a method for preventive treatment of corrosion, oxidation and/or depositions in domestic supply water distribution circuits, comprising steps which consist in: a diagnosis including an analysis of the state of corrosion, oxidation, depositions of the domestic supply water distribution circuit and an analysis of chemical elements of the water flowing in said circuit by sampling water flowing in said circuit; and preventive treatment of corrosion, oxidation and/or depositions of the domestic supply water distribution circuit by operating a treatment unit (3) measuring the flow rate of water entering the domestic supply water distribution circuit (2), and injecting a treatment product comprising silicates in an amount substantially proportional to the volume of water entering the domestic supply water distribution circuit, but not exceeding the feeding standards and adjusted on the basis of the result of the analysis of chemical elements of the water flowing in said circuit.

REFERENCES:
patent: 3669615 (1972-06-01), Murray
patent: 4313042 (1982-01-01), Ehrhart
patent: 5236600 (1993-08-01), Hutchins
patent: 5855791 (1999-01-01), Hays et al.
patent: 5895565 (1999-04-01), Steininger et al.
patent: 6587753 (2003-07-01), Fowee
patent: 6589461 (2003-07-01), Hansen et al.
patent: 7036559 (2006-05-01), Stanimirovic
patent: 19755622 (1999-06-01), None
patent: 10060164 (2001-05-01), None

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