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Method of sterilization and electrolytic water ejecting apparatus

A technology of electrolyzing water and equipment, applied in water/sewage treatment equipment, electrolytic components, electrolysis process, etc., can solve problems such as size reduction, electrode activity reduction, and difficulty in instant preparation, etc., and achieve excellent instant response characteristics, Improvement of electrode durability and improvement of sterilizing ability

Active Publication Date: 2007-01-24
DE NORA PERMELEC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0032] (3) The power supply for ozone production has high voltage and high frequency, so it is difficult to reduce the size
[0033] (4) In the ozonated water production equipment based on discharge, it takes a certain time (a few minutes of standby time) for the ozone gas production capacity to become stable, so it is difficult to prepare ozone-containing water with a certain concentration in real time
However, since the catalysts that can be used here are limited to stable catalysts such as noble metals to prevent the catalyst from contaminating the water, the current efficiency and concentration of this system are low.
In addition, this system also has the problem that there is a phenomenon that the activity of the electrode decreases when it is kept in stock
Although this phenomenon can be avoided by applying a backup protective current, this complicates the device and hinders size reduction

Method used

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  • Method of sterilization and electrolytic water ejecting apparatus
  • Method of sterilization and electrolytic water ejecting apparatus
  • Method of sterilization and electrolytic water ejecting apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0177] A niobium rod (diameter 2 mm; length 10 cm) on which conductive diamond was deposited (diamond thickness 3 μm; dopant boron concentration 500 ppm) was used as an anode. An ion exchange membrane tape (Nafion 350, produced by DuPont; 0.4 mm in thickness and 1 mm in width) was wound on the anode as a separator. A commercially available platinum wire (0.5 mm in diameter) was wound on the separator as a cathode, thereby integrating the anode, the membrane, and the cathode. This assembly (electrolytic unit; effective electrode area is 6cm 2 ) fixed at figure 1 and the inside of the PE resin delivery pipe in the trigger type spraying equipment shown in Fig. 2.

[0178] A 9V square battery is installed in the sprinkler head of the trigger type sprinkler. In the circuit section, electrode terminals are connected to variable resistors and switches with wiring. Add 500cc of pure water to the container. Pull the trigger and the circuit will close, allowing current to flow betw...

Embodiment 2

[0182] The same test as in Example 1 was performed except that pure water containing 0.1 g / L acetic acid was added to the container. As a result, the ozone concentration in the obtained solution was 3.5 ppm. The terminal voltage of the electrolytic unit is 7V, and the current is 0.3A. Store the ozone-containing water in airtight glass containers at room temperature. As a result, the initial concentration was maintained even after 2 hours. Repeat the trigger action 2,000 times. As a result, the current efficiency in each operation was almost equal to the initial value.

Embodiment 3

[0184] The same test as in Example 1 was carried out except that tap water containing 2 g / L of sodium chloride was added to the container. As a result, the ozone concentration and the hypochlorous acid concentration in the obtained solution were 0.8 ppm and 20 ppm, respectively. The terminal voltage of the electrolytic unit is 6.5V, and the current is 0.35A. Repeat the trigger action 2,000 times. As a result, the current efficiency per operation was almost equal to the initial value, and deposition of calcium and magnesium compounds was observed on the cathode of the electrolytic cell.

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Abstract

The present invention provides a sterilizing method using electrolyzed water and electrolyzed water injection equipment. The method includes: using an electrolyzed unit to electrolyze raw water to prepare electrolyzed water. The electrolyzed unit includes: a cathode and an anode, and the anode at least has a components; and spraying electrolyzed water onto the material to be sterilized.

Description

technical field [0001] The present invention relates to a sterilizing method using electrolyzed water containing an electrolysis product (such as ozone) dissolved therein at a relatively high concentration for sterilizing, cleaning, bleaching, and the like. The present invention also relates to a spraying device for spraying electrolyzed water. Background technique [0002] In nature, common bacteria widely exist in places such as soil, rivers, lakes and swamps. Therefore, there is a great deal of interest in technologies that can successfully eliminate or inhibit common bacteria while being safe for humans. Chlorine biocides such as sodium hypochlorite, calcium hypochlorite and sodium dichloroisocyanurate have been widely used as biocides / disinfectants in many settings. However, the extensive use of such chlorine sanitizers has caused problems. For example, in a factory or retail store that handles a lot of food, using a sodium hypochlorite solution with a concentration ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/50C02F1/461C02F1/78C25B9/19
CPCC02F1/46114A61L2/202A61L2/183C02F2001/46152C02F2305/04C02F2001/46138C02F2303/04C02F1/66C02F2201/46115C02F2209/23A61L2/186A61L2202/11C02F2307/02A61L2/22C02F2201/46125C02F1/4672C02F2201/003C02F2001/46147C02F2001/46171C02F2209/06C02F2201/46135
Inventor 北折典之宇野雅晴锦善则古田常人
Owner DE NORA PERMELEC LTD
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