KR200262827Y1 - Apparatus for water sterilization in reservoir of water purification system by electrochemical process - Google Patents

Abstract

The present invention is a device for sterilizing bacteria in water purifier water tank using unit electrolytic cell. It consists of ion exchange membrane and electrode. It uses high concentration salt solution or mixed salt and hydrogen chloride solution on both electrode side of tube and generates complex oxidant This technology uses the principle of disinfection or sterilization.

Description

Apparatus for water sterilization in reservoir of water purification system by electrochemical process

Currently, most water purifiers store the water that has passed through the filters in the water purifiers in the reservoirs, which are then sent back to the cooling or hot water baths. However, this reservoir is causing secondary pollution. Therefore, it is to sterilize the water of the reservoir using the present invention technology, which uses an electrochemical method rather than a filter method that requires less energy, is stable, and frequently changes.

The present invention uses an electrochemical method as a secondary pollution prevention treatment to prevent bacterial growth in the water of the reservoir in the water purifier. In general, the electrochemical method is to electrolyze water to obtain acidic water and drinking water (alkaline water), so that alkaline water is called living water, and acidic water is used to destroy bacteria or as washing water.

Unlike the present invention, a method of disinfecting or sterilizing by generating a complex oxidant in water and electrochemically using a tubular anion exchange membrane 2 as shown in FIG. 1 and installing a negative electrode 6 therein and an outer tube anion exchange membrane ( 2) it is surrounded by a positive electrode (1) and the outside is surrounded by a cylindrical shape (3) is designed to act as a single electrolytic cell as a whole. Inside the outer tube (4) located above is filled with 5 mol of NaCl solution and 1 mol of HCI solution (5). Therefore, a device for supplying a solution, that is, a metering pump is not required, and a water purifier for obtaining acidic and alkaline water may be used for sterilization or deactivation of water passing through an ion exchange membrane tube. That is, it can be used for the purpose of sterilizing and purifying water in households using water tank sterilization of water purifiers or household groundwater alone.

An object of the present invention can be used for the purpose of preventing the contamination of the secondary bacteria in the reservoir in the water purifier. In particular, since the principle is simple, the device is simple, and the installation is easy, the device is inexpensive and easy to install compared with other electrolytic devices using expensive metering pumps. In particular, one of the main features of the device was that a mixture of salt solution and HCl was used to prevent the sterilization from dropping because OH ^- and Cl ^- pass through the anion exchange membrane due to the increased concentration of OH ^- generated on the negative electrode side. . When the mixed solution is used, this phenomenon is eliminated because Cl ^- passes through the ion exchange membrane and the remaining hydrogen ions and OH ^- form water. At the same time, it is possible to solve the problem of the increase of pH due to the increase of the concentration of OH ^-in the solution side, as well as to inactivate the bacteria in the water by the complex oxidant that passed through the ion exchange membrane and to prevent the growth of bacteria at the source, thereby preventing the secondary pollution in the reservoir It can be solved fundamentally.

1

(1) positive electrode (ANODE)

(2) tubular anion exchange membrane

(3) cylindrical appearance

(4) Cylindrical outline (mixed solution)

(5) Mixed solution

(6) Cathode electrode (CATHODE)

(7) water inlet

(8) water outlet

In order to achieve the above object, the present invention was made to kill the bacteria in the water purifier reservoir by the electrolytic method when passing through the cell made as shown in FIG. Specifically, the negative electrode 6 was installed inside the tube of the negative ion exchange membrane 2, and the ion exchange membrane was surrounded by the positive electrode 1, and the outer tube 3 was surrounded. In particular, the brine is supplied through a tube connected to the ion exchange membrane tube. In the space of this tube, 5 mol of salt water or 5 mol of salt solution and 1 mol of hydrochloric acid solution were mixed. This mixed solution is high in concentration and can be used for a long time. If necessary, increase the volume or mix the brine and hydrochloric acid solution. In this state, while supplying power by the DC power supply device, the water passes through the ion exchange membrane tube from the inlet to the water outlet. At this time, the HOCl generated in the water causes the bacteria in the water to die and no longer occur.

At this time, the positive electrode 2

^{_{H 2 O → H + + OH}} -

_{^{4OH - - 4e - → 2H 2}} O + O 2

_{H 2 O + O 2 - 2e} - → O 3 ↑ + 2H +

^{2Cl - - 2e - → 2Cl →} Cl 2

_{Cl 2 + H 2 O → HOCI} + H + + Cl -

In addition, in the negative electrode 3

^{_{2H 2 O + 2e - → 2OH}} - + H 2 ↑

However, OH ^- is generated in the negative electrode and the pH is increased, which is a water purifier by a general electrolytic method, and since OH ^- and Cl ^- enter together through the ion exchange membrane at the same time, to prevent the concentration of Cl ions from dropping. ^- because the H ⁺ and the reaction produced by the decomposition of HCl up OH ^{- -} in the present in order to prevent an increase in the concentration of the devise was used a solution of HCl OH generated as follows: increase in the performance of the pH due to the increase in This fall phenomenon was eliminated.

H ⁺ (the remaining HCI is ionized proton) + OH ^- → H ₂ O

The positive electrode and the negative electrode used in the present invention may use electrodes of different materials, and in the present invention, all were manufactured using carbon fiber.

The present invention is a device for preventing secondary pollution by bacteria in a water tank in an existing water purifier, or as a simple device requiring little energy that can be installed and used in a household using a simple water supply for home use without using standardized water supply. It was possible to achieve the above object. In particular, due to the lack of awareness of water purifier management, even if the filter is not replaced in time or even a small number of bacteria enters the reservoir, the number of bacteria increases very quickly, and therefore a large number of bacteria live after a certain time. In order to solve this problem, if the electrolytic cell is installed, it prevents bacteria from entering the reservoir and inactivates even the bacteria. Therefore, it is possible to completely solve the bacteria problem of the water purifier.

Claims (3)

One unit electrolysis cell using tubular negative ion exchange membrane and surrounded by carbon fiber woven fabric to increase the area of positive electrode on the outside, negative electrode is installed inside, and consisting of tubular mixed solution storage tube connected with tubular anion exchange membrane Sterilizer composed of. The sterilization apparatus according to claim 1, wherein an active carbon woven fabric or a carbon fiber woven fabric is used to surround the tubular negative ion exchange membrane to have a large area as a positive electrode. The method of claim 1, wherein the tube connected to the anion exchange membrane tube is filled with a high concentration of a salt solution or a mixed solution made by mixing a salt solution with a hydrochloric acid solution, thereby preventing the pH from rising and at the same time preventing the performance degradation due to an increase in the OH ion. And sterilizer which prevents solution from outside.