US3910829A - Method and apparatus for the disinfection of liquids by anodic oxidation and preceding reduction - Google Patents

Method and apparatus for the disinfection of liquids by anodic oxidation and preceding reduction Download PDF

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Publication number
US3910829A
US3910829A US473377A US47337774A US3910829A US 3910829 A US3910829 A US 3910829A US 473377 A US473377 A US 473377A US 47337774 A US47337774 A US 47337774A US 3910829 A US3910829 A US 3910829A
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US
United States
Prior art keywords
cell
compartment
liquid
electrode
anode
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Expired - Lifetime
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US473377A
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English (en)
Inventor
Volker Eibl
August Reis
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Sachs Systemtechnik GmbH
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Sachs Systemtechnik GmbH
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Publication date
Application filed by Sachs Systemtechnik GmbH filed Critical Sachs Systemtechnik GmbH
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Publication of US3910829A publication Critical patent/US3910829A/en
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
    • C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/03—Electric current
    • A61L2/035—Electrolysis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection

Definitions

  • This invention is directed to a method of disinfecting liquids, preferably water-containing liquids, by anodic oxidation, wherein the liquid to be disinfected is exposed in a first electrolytic cell having a cathode and an anode within the anode compartment to an electric current, cathode compartment and anode compartment being separated by a diaphragm.
  • This method consists in exposing the liquid to be disinfected to a reducing agent before the treatment in the electrolytic cell, i.e., enriching the liquid to be disinfected with electrons.
  • the disinfecting effect in the anodic oxidation is essentially improved, so that the size of the apparatus and therewith construction expenses are reduced; furthermore there is achieved the advantage that the liquid to be disinfected stays in the apparatus for a shorter time, which guarantees a reduction of separations of the electrode material and thus a disinfecting effect which is substantially free of negative results.
  • the method according to this invention is especially simply to realize if the cathode compartment of an electrolytic cell is used as the reduction agent. In this event it is not necessary to add any reagents to the liquid so as to obtain a reduction effect. In this connection it is of some advantage to make such an arrangement that a plurality of electrolytic cells are passed subsequently, whereby the liquid flows through the cathode compartment of the first cell and through the anode compartments of the following cells.
  • this invention relates to an apparatus for performing the afore-mentioned method.
  • Such apparatus comprises a plurality of electrolytic cells arranged in series, each electrolytic cell being provided with a cathode compartment and an anode compartment, at least one of said cells being provided with an inlet and an outlet in its cathode compartment, the rest of the electrolytic cell being provided with respective inlets and outlets in their anode compartment, the cells being arranged in series such that the outlet from the cathode compartment of said one cell is connected to the inlet of the anode compartment of another cell, possible further cells being connected with the inlet of their anode compartment to the outlet of the anode compartment of the preceding cell and with their outlet to the inlet of the anode compartment of the subsequent cell.
  • This allows a very simple construction having substantially identical parts and saving space.
  • the space in a container 1 is divided into two compartments 6, 7 by a diaphragm 8.
  • the liquid to be purified is fed to the compartment 6 of the first cell through an inlet duct 9, caused to flow from the compartment 6 of the first cell to the compartment 7 of the second cell through a connecting line 10. It enters the compartment 7 of the third cell from the compartment 7 of the second cell through a connecting line 11, and is discharged from the compartment 7 of the third cell through an outlet duct 12.
  • Each compartment 6 contains an electrode 4 connected by a conductor 5 to the negative pole of a source of electric current.
  • Each compartment 7 contains an electrode 2 connected to the positive pole of the current source by a conductor 3.
  • the basic function of the apparatus is that before the very anodic oxidation there takes place a reduction process in the cathode compartment 6 of the first electrolytic cell for the purpose of disinfection within the anode compartments 7 of the second and the third electrolytic cell.
  • the effect of the anodic oxidation turned out to have been improved in this way, in particular there is a more rapid cut-down of number of germs within a relatively short period.
  • a comparison of the apparatus according to this in vention on the one hand with the system of a simple liquid flow through the anode compartment of an electrolytic cell on the other hand has shown essential advantages achieved by this invention.
  • the circulation test (this means the duct 12 is connected with duct 9 by a pump to form a closed circulation), in particular up to a duration of four minutes, results in a considerably greater cut-down of the number of germs when employing the method according to this invention.
  • the diaphragma may be of any known material.
  • disinfection as used in the specification and in the claims is to comprise also decontammination and detoxication.
  • a method of purifying an aqueous liquid contaminated with microorganisms which comprises:

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Electrochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Pretreatment Of Seeds And Plants (AREA)
US473377A 1973-06-09 1974-05-28 Method and apparatus for the disinfection of liquids by anodic oxidation and preceding reduction Expired - Lifetime US3910829A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2329630A DE2329630C3 (de) 1973-06-09 1973-06-09 Verfahren und Einrichtung zur Entkeimung von Flüssigkeiten durch anodische Oxydation mit vorheriger Reduktion

Publications (1)

Publication Number Publication Date
US3910829A true US3910829A (en) 1975-10-07

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ID=5883642

Family Applications (1)

Application Number Title Priority Date Filing Date
US473377A Expired - Lifetime US3910829A (en) 1973-06-09 1974-05-28 Method and apparatus for the disinfection of liquids by anodic oxidation and preceding reduction

Country Status (11)

Country Link
US (1) US3910829A (de)
JP (1) JPS5032763A (de)
AR (1) AR211842A1 (de)
BR (1) BR7404715D0 (de)
DE (1) DE2329630C3 (de)
EG (1) EG11485A (de)
FR (1) FR2232519B3 (de)
GB (1) GB1469996A (de)
IN (1) IN141722B (de)
IT (1) IT1014301B (de)
OA (1) OA04714A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4620914A (en) * 1985-07-02 1986-11-04 Energy Research Corporation Apparatus for purifying hydrogen
US4690741A (en) * 1984-10-12 1987-09-01 Cape Cod Research, Inc. Electrolytic reactor and method for treating fluids
DE4318628A1 (de) * 1992-06-04 1993-12-09 N Proizv Ob Edinenie Ekran Vni Verfahren zur Wasseraufbereitung

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3629010A1 (de) * 1986-08-27 1988-03-03 Siemens Ag Keimarme dentalausruestung
EP0286233B1 (de) * 1987-03-11 1992-01-02 Omco Co. Ltd. Wasserelektrolyse-Vorrichtung
DE102010042444A1 (de) * 2010-10-14 2012-04-19 Siemens Aktiengesellschaft Verfahren und Vorrichtung zur Abtrennung von Ionen aus Abwässern, insbesondere aus industriellen Prozesswässern

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1603298A (en) * 1924-12-17 1926-10-19 Western Electric Co Method for and means of separating electrolytes
US2882210A (en) * 1955-07-01 1959-04-14 George N Jenks Electrolytic water purification process
US3135674A (en) * 1960-06-06 1964-06-02 Electric Storage Battery Co Method and apparatus for the purification of water

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5338712B2 (de) * 1971-12-23 1978-10-17

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1603298A (en) * 1924-12-17 1926-10-19 Western Electric Co Method for and means of separating electrolytes
US2882210A (en) * 1955-07-01 1959-04-14 George N Jenks Electrolytic water purification process
US3135674A (en) * 1960-06-06 1964-06-02 Electric Storage Battery Co Method and apparatus for the purification of water

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4690741A (en) * 1984-10-12 1987-09-01 Cape Cod Research, Inc. Electrolytic reactor and method for treating fluids
US4620914A (en) * 1985-07-02 1986-11-04 Energy Research Corporation Apparatus for purifying hydrogen
DE4318628A1 (de) * 1992-06-04 1993-12-09 N Proizv Ob Edinenie Ekran Vni Verfahren zur Wasseraufbereitung
US5540819A (en) * 1992-06-04 1996-07-30 Nauchno-Proizvodstvennoe Obiedinenie "Ekran" Vsesojuzny Nauchno-Issledovatelsky I Ispytatelny Institut Meditsinskoi Tekhniki Water treatment method

Also Published As

Publication number Publication date
DE2329630A1 (de) 1975-01-23
JPS5032763A (de) 1975-03-29
AR211842A1 (es) 1978-03-31
GB1469996A (en) 1977-04-14
DE2329630C3 (de) 1980-04-10
EG11485A (en) 1978-12-31
FR2232519A1 (de) 1975-01-03
BR7404715D0 (pt) 1975-01-28
IN141722B (de) 1977-04-09
FR2232519B3 (de) 1977-04-08
DE2329630B2 (de) 1979-08-09
OA04714A (fr) 1980-08-31
IT1014301B (it) 1977-04-20

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