Liquid purification or separation – Processes – Including controlling process in response to a sensed condition
Patent
1987-08-05
1989-04-04
Hruskoci, Peter
Liquid purification or separation
Processes
Including controlling process in response to a sensed condition
210754, 210764, 162161, 422 14, 422 37, C02F 176
Patent
active
048184136
ABSTRACT:
The copper corrosion rate is minimized to a certain discharge limit by providing a chlorine-bromide treatment in which the chemical feed rate of bromide is increased to an amount required to decrease the copper corrosion rate to the rate required to meet the discharge limit. The inventors made the unexpected and surprising discovery that an increase in the chemical feed rate of bromide--even when the chlorine feed rate is constant--has the effect of reducing copper corrosion. Therefore, this effect is useful for adjusting the copper corrosion rate to an optimum rate to most economically achieve a certain discharge limit. In a preferred embodiment of the invention, the biocide water treatment program includes the steps of measuring the copper corrosion rate during a chlorine-bromide treatment interval, computing the value of copper discharge from the measured copper corrosion rate, comparing the computed value of copper discharge to the discharge limit, and adjusting the bromide chemical feed rate based on the comparison, to thereby economically achieve an amount of copper discharge within the discharge limit.
REFERENCES:
patent: 2443429 (1948-06-01), Marks et al.
patent: 2580809 (1952-01-01), Marks et al.
patent: 3592212 (1971-07-01), Schleimer et al.
patent: 4451376 (1984-05-01), Sharp
patent: 4631530 (1986-12-01), Gasper
patent: 4643835 (1987-02-01), Koeplin-Gall et al.
patent: 4659459 (1987-04-01), O'Leary et al.
"Cooling Water Chlorination," TF-132, Nalco Chemical Company (1986) (4 pp.).
James & Slifer, "Cooling Water Treatment Using a Liquified Gas Feeder and Bromine Chloride," 46th Annual Meeting International Water Conference Pittsburgh, PA (Nov. 4-7, 1985).
Kraemer et al., "Chlorine Minimization With a Chlorine-Bromine-Biodispersant Mixture," American Power Conference, Chicago, IL (Apr. 23-25, 1984).
"N-Compas (Trademark) (Innovative Computerized Service) Programs for Electric Utilities," Nalco Chemical Company (1983) (4 pp.).
Federal Register, vol. 47, No. 224, Friday, Nov. 19, 1982, pp. 52304-52309.
"Chlorine Alternatives for Steam Electric Plants," PR-3, Nalco Chemical Company, (1982) (1 page).
"Chlorine Alternatives," UT-1, Nalco Chemical Company (1982).
Bush Mark A.
Hoover Richard L.
Auchterlonie Richard C.
Hruskoci Peter
Nalco Chemical Company
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