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US3943261A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for water disinfection and carbonation

Assignee: Coca-Cola Co
•
Filing: 1975-07-03
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Granted: 1976-03-09
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Expires: 1995-07-03
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Abstract

Abstract A process and system is described for rapid disinfection of contaminated water particularly for use in post-mix carbonated beverage systems. The major components of the system include sequentially a water supply, carbonator pump, injector device, carbonator and dispenser. Moreover, as optional components, a reservoir and filter may be incorporated in the system between the carbonator and dispenser for safety factor purposes. The process comprises the introduction of chlorine into an available water supply line immediately before, or during carbonation, thereby reducing or eliminating the conversion of the chlorine present in the system to less active compounds. The process of carbonating the water results in chemically lowering the pH from alkaline (> pH of 7.0) through neutral (pH 7.0) to acidic (< pH of 7.0) thus affording the system of a more rapid and effective kill of pathogenic micro-organisms upon a controlled and effective injection of a liquid disinfectant, such as sodium hypochlorite, which may be used as the source of chlorine for the system. By introducing the liquid disinfectant at an acidic pH, a more instantaneous kill results without the necessity of using either an excessive quantity of disinfectant (chlorine) or large and expensive residence chambers requiring long residence times. The improved post-mix system provides dependable performance when used in conjunction with different water conditions throughout the world and permits the disinfected carbonated water to be dispensed along with a beverage syrup to produce a high quality carbonated beverage.

Inventors

  • 👤 Anton Amon
  • 👤 Jason K. Sedam

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 11:49
CPC Classifications
A; A23; A23L; A23L2/00; A23L2/52; A23L2/54; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/236; B01F23/2363; C; C02; C02F; C02F1/00; C02F1/72; C02F1/76

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 117 words
A process for rapid disinfection of a water supply which is contaminated with micro-organisms and to be consumed either in the form of potable carbonated water, or as a carbonated beverage formed by admixture of said carbonated water with a beverage syrup, which comprises the steps of lowering the pH of the contaminated water to less than 6.0, but greater than 4.0, without the addition of a mineral or organic acid by the introduction of carbon dioxide gas into the contaminated water and, at substantially the same time, by injecting a sufficient amount of liquid halogen-based disinfectant into the contaminated water to achieve the complete elimination of non-cyst forming pathogenic micro-organisms and substantial reduction of non-pathogenic micro-organisms.
Claim 2
Dependent Claim 117 words
A process for rapid disinfection of a water supply which is contaminated with micro-organisms and to be consumed either in the form of potable carbonated water, or as a carbonated beverage formed by admixture of said carbonated water with a beverage syrup, which comprises the steps of lowering the pH of the contaminated water to less than 6.0, but greater than 4.0, without the addition of a mineral or organic acid by the introduction of carbon dioxide gas into the contaminated water and, at substantially the same time, by injecting a sufficient amount of liquid halogen-based disinfectant into the contaminated water to achieve the complete elimination of non-cyst forming pathogenic micro-organisms and substantial reduction of non-pathogenic micro-organisms.
Claim 3
Dependent Claim 15 words
A process as defined in claim 1, wherein the disinfectant comprises substantially diluted sodium hypochlorite.
Claim 4
Dependent Claim 38 words
A process as defined in claim 2, wherein the amount of disinfectant injection comprises about 4ml per 1000ml of contaminated water to be disinfected, thereby producing approximately 2ppm of available chlorine in the contaminated water to be disinfected.
Claim 5
Dependent Claim 52 words
A process as defined in claim 1, wherein the substantially disinfected water is further subjected to a filtration step to assure complete disinfection by removal of large cyst forming micro-organisms by entrapping the large micro-organisms on the upstream side of the filter where they are destroyed by prolonged exposure to the disinfectant.
Claim 6
Dependent Claim 33 words
A process as defined in claim 4, wherein the substantially disinfected water is passed through activated carbon during the filtration step for removal of excess disinfectant, as well as objectionable tastes and odors.
Claim 7
Dependent Claim 50 words
A process as defined in claim 3, wherein the substantially disinfected water is further subjected to a filtration step to assure complete disinfection by removal of large micro-organisms by entrapping the large micro-organisms on the upstream side of the filter where they are destroyed by prolonged exposure to the disinfectant.
Claim 8
Dependent Claim 32 words
A process as defined in claim 6, wherein the disinfected water is passed through activated carbon during the filtration step for removal of excess disinfectant, as well as objectionable tastes and odors.

References Cited (Backward Citations)

CA856211A Cited
US700464A Cited
US2071990A Cited
US2662855A Cited
US2851361A Cited
US3296122A Cited
US3650405A Cited
US3779909A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-03-09 1979-09-08 1980-03-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-03-09 1983-09-08 1984-03-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-03-09 1987-09-08 1988-03-09 $7700.00 Window Closed / Lapsed

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