KR19990043068A - Water Purification & Sterilization Equipment - Google Patents

Abstract

The present invention relates to an apparatus for producing purified water and sterilized water, which enables one device to produce drinking water and sterilized water, respectively.

Conventional devices, respectively, drinking water to obtain drinking water through the drinking water dedicated water purification device, sterilized water was only to obtain sterilized water from the sterilizing water dedicated device.

The present invention is controlled by the valve A (101) to enable the production and use of three different properties of water through a single device configuration, the primary to remove the suspended solids and organic and residual chlorine components in the feed water A filter unit composed of a filter 102 and a secondary filter 103 which is an ultrafiltration device for removing bacteria and microorganisms; An electrolytic device unit in which a positive electrode 113, a negative electrode 114, and a heterogeneous ion exchange membrane 115 are stacked in the DC power supply 111 and the electrolytic cell 112; A brine supply unit comprising a high concentration brine storage tank 122 and a brine injection device for supplying brine at a concentration of 0.05% to 0.1% supplied to the electrolytic device; To discharge the treated water discharged from the electrolytic device to a plurality of individual pipes and to the discharge portion having a valve D (131), a valve E (132), a valve F (133) and a valve G (14) to control them, respectively. It is a device for producing purified water and sterilized water, characterized in that it has a sterilizing water for sterilizing bacteria using a single device module and alkaline water for drinking and water purification for beverages.

Description

Purifying and sterilizing water production equipment

The present invention relates to a water purifying device, and more particularly, to a water purification and sterilizing water production apparatus that can produce drinking water and sterilizing water by one device.

In general, drinking water is used for drinking water directly filtered with pre-treatment filter or activated carbon filter as drinking water and secondly by using reverse osmosis membrane or ultrafiltration membrane as drinking water. Put on a UV sterilizer.

The sterilizing water is supplied with DC power while passing low concentrations of salt water between the anode coated with precious metals such as platinum, iridium, and ruthenium, and the cathode and the electrolytic cell (CELL) composed of special separators. Obtains highly alkaline electrolytic water.

Therefore, the conventional apparatuses have a device configuration in which drinking water obtains drinking water through a drinking water dedicated water purification device, and sterilization water obtains only sterilizing water from a sterilizing water dedicated device.

And in the sterilized water production device, about 0.05%-0.1% of salt water is injected into the electrolytic cell (CELL) for about a long time, about 15%-20% of salt water is stored in the brine storage container and then ) Is injected into the electrolytic cell (CELL) after mixing a certain amount with tap water or ground water to make a concentration of 0.05-0.1%.

However, in the case of using such a metering pump, the pump is not only very expensive, but when air is introduced, fine bubbles are formed in the inlet pipe, which makes it difficult to operate the pump. There is a disadvantage that the operation and repair is very difficult.

Quantitative injection pumps used to quantitatively inject brine in existing equipment are expensive and cause frequent failures.

It is an object of the present invention to manufacture and use water of three different properties through a single device configuration, and to have the same performance as in the case of using the metering pump as described above, and to use the metering pump as indicated above. The purpose of the present invention is to provide an apparatus for preparing purified water and sterilized water, which can compensate for the disadvantages and reduce the price.

1 is a block diagram of the present invention.

2 is a flow chart of the water purification process of the present invention.

Figure 3 is a flow diagram of the alkaline water production process of the present invention.

Figure 4 is a flow chart of the sterilizing water production process of the present invention.

5 is a cross-sectional view of the ejector and the suction filter of the present invention.

6 is a principle of producing sterilized water and alkaline water.

* Explanation of symbols for the main parts of the drawings

101: valve A 102: primary filter

103: secondary filter 111: DC power supply

112: electrolyzer 113: anode

114: cathode 115: heterogeneous ion exchange membrane

122: salt water storage tank 123: ejector suction filter

124: suction pipe 125: ejector

126: valve B 127: valve C

131: valve D 132: valve E

133: valve F 134: valve G

In order to achieve the above object, the present invention is controlled by the valve A, the primary filter to remove the suspended solids and organic and residual chlorine components in the feed water and the secondary filter which is an ultrafiltration device to remove bacteria and microorganisms A filtering device unit configured to include; An electrolytic device unit comprising a cathode, an anode, and a heterogeneous ion exchange membrane laminated in a DC power supply and an electrolytic cell; A brine supply part comprising a high concentration brine storage tank and a brine injection device for supplying brine at a concentration of 0.05% to 0.1% supplied to the electrolytic device; Discharge the treated water discharged from the electrolyzer unit into a plurality of individual pipes and sterilize bacteria using a single device module, which consists of a discharge unit having valve D, valve E, valve F, and valve G to control each of them. It is characterized by having sterilizing water, alkaline water for drink and water purification function for drink. Instead of the salt water injection pump, an ejector and ejector suction filter are applied to reduce the installation space and reduce the device cost. And to prepare sterilized water.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall configuration diagram showing a process fluid flow of the present invention, which is controlled by the valve A 101, and includes a primary filter 102 and bacteria to remove suspended solids, organic matter, and residual chlorine in the feed water. A filtration device portion composed of a secondary filter 103 which is an ultrafiltration device for removing microorganisms; An electrolytic device unit in which a positive electrode 113, a negative electrode 114, and a heterogeneous ion exchange membrane 115 are stacked in the DC power supply 111 and the electrolytic cell 112; A brine supply unit comprising a high concentration brine storage tank 122 and a brine injection device for supplying brine at a concentration of 0.05% to 0.1% supplied to the electrolytic device; To discharge the treated water discharged from the electrolytic device to a plurality of individual pipes and to the discharge portion having a valve D (131), a valve E (132), a valve F (133) and a valve G (14) to control them, respectively. It is composed.

The brine supply unit brine storage tank 122 for storing a relatively high concentration of brine to make a dilute brine of 0.05-0.1%; An injector 125 which is a salt injection device for injecting the brine of the brine reservoir 122 into the conduit; An ejector suction filter 123 installed in the salt water storage tank 122 to supply salt water to the ejector 125; The valve B 126 and the valve C 127 which control the conduit connected to the ejector 125 are provided.

The injector suction filter 123 of the brine supply unit fills a material capable of forming a capillary tube such as a nonwoven fabric in the suction pipe 124 so that the brine rises to a certain height by a capillary phenomenon to be supplied to the ejector 125. do.

The injector suction filter 123 is to reduce the cross-sectional area so that the salt water injection is made by adjusting the amount of salt water.

As the ion exchange membrane of the electrolytic device, a heterogeneous ion exchange membrane 115 made of an anion exchange resin or a cation exchange resin powder is used.

The electrolyzer unit removes less than 30% of negative ions when producing a weakly alkaline beverage having a pH of 9 or less by supplying a current of less than 1 ampere (A).

The present invention having such a configuration is to have a sterilizing water for sterilizing bacteria and alkaline water for drinking and water purification function using a single device module.

As described above, the primary filter 102 filled with the fine filtration material and the activated carbon is used to remove suspended matter, organic matter, residual chlorine, etc. in the feed water, and the secondary filter ( A filtration device (103).

In addition, in order to prepare sterilized water and alkaline water for drinks, an electrolytic apparatus including a cathode 113, an anode 114, and a heterogeneous ion exchange membrane 115 was provided.

To make the sterilized water, use a DC power supply and dilute brine between 0.05-0.1%. At this time, a high concentration brine storage tank 122 and a brine injector are required to make the dilute brine.

Conventional equipment uses a metering pump to inject brine quantitatively.

However, this pump is not only expensive but can also cause frequent failures. In the present invention, the ejector 125 is used to reduce costs and significantly reduce the cause of mechanical failure.

2 is a diagram illustrating a water purification process used for drinking water, in which valves B, C, D, F, and G 126, 127, 131, 133, and 134 are closed, and valve A ( Only 101 and valve E 132 are open.

The tap water supplied through the valve A 101 is subjected to the primary filtration and purification in the primary filter 102, and the secondary water is passed through the electrolytic cell 112 after the secondary treatment in the secondary filter 103.

At this time, the direct current does not flow through the electrolyzer, and the transferred water is discharged through the valve E (132) only through the electrolyzer.

Therefore, tap water can be used as drinking water only with purified water.

3 is a process for obtaining weak alkaline water used for drinking water, and valves B, C, D, and F 126, 127, 131, and 133 are closed, and valves A 101 and E are closed. Only 132 and valve F 133 are open.

The water is treated through the same process as the water purification process, and the weak alkaline current below pH 9 is supplied to the electrolytic device by supplying a weak DC current of less than 1 amp, so that it can be used for beverages.

The heterogeneous ion exchange membrane 115 used in the electrolytic apparatus is a membrane made of ion exchange resin powder as a raw material, and a cation exchange membrane or an anion exchange membrane is used for the electrolytic apparatus, and the two can be used in combination.

The cation exchange membrane is made of cation exchange resin powder and the anion exchange membrane is made of anion exchange resin powder.

Ion-exchange membranes made from ion-exchange resin powders act as ion exchange resins when no current is supplied, and cations exchange membranes to remove some cations in the water, and anion exchange membranes capture and remove some anions in water. In this case, when the current is supplied, the cation exchange membrane passes only the cation toward the cathode and prevents the anion of the cathode portion from passing toward the anode.

In addition, when using an anion exchange membrane, only anions pass through and cations cannot pass through.

For this reason, when an anion exchange membrane is used in an electrolytic device, some traces of anions are removed in the electrolysis process, and about 30% of anions are removed in the alkaline water process.

4 is a process chart for obtaining sterilizing water, in which valves A, E, G (101), (132), and (134) are closed, and valves B, C, D, F (126), (127), and (131). 134 is in an open state, and power is supplied to the electrolyzer.

The sterilized water obtained by the above process is not used for beverages, but used for sterilizing dishes, cutting boards, dishcloths and the like.

Therefore, unlike the water purification process, the sterilization water production process connects tap water directly to the injector, and adds salt so that the water passing through the injector becomes less than 0.05-0.1% of the brine and then is supplied to the electrolytic apparatus.

At this time, most of the sterile water production apparatus used a fixed quantity injection pump to inject brine, but in the present invention is injecting brine by using the ejector 125 and the ejector suction filter 123.

Proper concentration of brine required for the production of sterilized water is maintained by the brine height of the brine storage tank 122 and the ejector 125 and the ejector suction filter 123.

FIG. 6 shows the manufacturing principle of sterilizing water and alkaline water, while supplying power by the DC power supply 111 with a heterogeneous ion exchange membrane 115 installed between the anode 113 and the cathode 114. Pass the feed water in between.

At this time, the reaction at the anode 113

^{_{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 → HOCl} + H + + Cl -

In addition, the reaction at the cathode

^{_{2H 2 O + 2e - → 2OH}} - + H 2 ↑

5 is a cross-sectional view showing the structure of the ejector and the injector suction filter, the injector suction filter 123 serves to filter impurities in the brine and to prevent the brine is excessively injected.

The injector suction filter 123 is located in the salt water suction pipe of the ejector 125 and is filled with a material such as a nonwoven filter medium that forms a capillary tube and reduces the cross-sectional area of the pipe.

When the salt water is injected using the ejector 125, it is very difficult to control the injection amount because a small amount of high concentration (10-20%) must be injected.

When a control valve is attached to the suction pipe, bubbles are generated by negative pressure in front of the valve, making it difficult to control the amount of salt water injected.

In order to solve this difficulty, a capillary tube was formed on the suction filter to inhale salt water so that a small amount of salt water was injected, and impurities in the salt water were filtered to prevent clogging of the ejector.

(Example)

Sterilization ability test method and examples of sterilized water prepared by the present invention

Report of Experimental Analysis of Biotechnology Research Institute, Korea Institute of Science and Technology

<Experience materials>

1. Experimental Materials

: 1 point of liquid sample provided by the client (sterilization number)

2. Experimental strain

Escherichia coli KCTC 1682 (ATCC 25922)

Pseudomonas aeruginosa KCTC 2004 (ATCC 27853)

Staphylococcus aureus KCTC 1916 (ATCC 6538P)

Vibrio vulnificus KCTC H0338 (ATCC 27652)

3. Use badge

Nutrient agar (Difco Co. 0001-01-8)

TCBS agar (for Vibrio sp., Difco Co. 065-01-2)

<Experiment method>

1. Preparation of bacterial solution

① Incubate the test bacteria in agar nutrient medium (Nutrient agar) for 18-24 hours. (25-37 ℃)

② Suspend in sterile physiological saline to make 10 ^8-9 / ml.

2. Sterilization test

① Slightly tilt the sterilized Petri dish and add 10 µl each of the prepared bacterial solution to sterile saline solution (total bacterial count 10 ^6-7 CFU).

② Add sterile physiological saline to the control group and 1 ml of sterile water provided by the sponsor.

③ As a control, remove 100µl immediately after the addition of sterile water and measure viable bacteria by serial dilution.

④ Immediately after addition of sample, 20 sec, 1 min, and 2 min, 100 μl of each sample is removed and plated on a selective medium without dilution.

<Experiment Method>

The experiment was repeated nine times in the same manner, and the results averaged nine experiments.

(Unit: CFU / ml)

Strain name KCTC No. sample Viable cell count Start of experiment 20 sec 1 minute 2 mins Escherichia coli 1682 Control 6.0 × 10 ⁸ - - 6.2 × 10 ⁸ sample 0 0 0 0 Pseudomonas aeruginosa 2004 Control 9.2 × 10 ⁹ - - 9.0 × 10 ⁹ sample 0 0 0 0 Staphylococcus aureus 1916 Control 8.0 × 10 ⁹ - - 8.1 × 10 ⁹ sample 0 0 0 0 Vibrio vulnificus H0338 Control 8.5 × 10 ⁸ - - 8.1 × 10 ⁸ sample 0 0 0 0

According to the present invention

first; The device is designed to be used simply and efficiently by assembling a device capable of three functions in one body together.

second; The cost of the device can be reduced by injecting a brine injector for producing sterilized water using an ejector.

third; The difficulty in controlling the amount of the small brine injection by the injector was applied to the ejector suction filter with a capillary tube to control the amount of the small brine infusion.

fourth; Impurities contained in the injected brine were filtered using an injector suction filter to remove the blockage of the ejector or the blockage of the impurity in the electrolytic apparatus at the next stage.

fifth; Using the membrane made of ion exchange resin powder which is different from the commercial products as the separator of the electrolytic device, the ionic components in the filtered water supplied in the water purification process are brought into contact with the powder ion exchange resin on the surface of the membrane. To be removed.

Sixth; By supplying more than 2 amperes of current to the same electrolytic device, it is possible to make sterilized water and supply of current of less than 1 amperage to make alkaline water for beverage.

Claims (6)

Controlled by valve A 101, the primary filter 102 to remove suspended solids and organic and residual chlorine components in the feed water and the secondary filter 103 is an ultrafiltration device to remove bacteria and microorganisms A configured filter unit; An electrolytic device unit in which a positive electrode 113, a negative electrode 114, and a heterogeneous ion exchange membrane 115 are stacked in the DC power supply 111 and the electrolytic cell 112; A brine supply unit comprising a high concentration brine storage tank 122 and a brine injection device for supplying brine at a concentration of 0.05% to 0.1% supplied to the electrolytic device; To discharge the treated water discharged from the electrolytic device to a plurality of individual pipes and to the discharge portion having a valve D (131), a valve E (132), a valve F (133) and a valve G (14) to control them, respectively. It is configured to have a sterilizing water for sterilizing bacteria using a single device module and alkaline water for drinking water and drinking water production apparatus characterized in that it has a water purification function for beverages. The method of claim 1, The brine supply unit brine storage tank 122 for storing a relatively high concentration of brine to make a dilute brine of 0.05-0.1%; An injector 125 which is a salt injection device for injecting the brine of the brine reservoir 122 into the conduit; An ejector suction filter 123 installed in the salt water storage tank 122 to supply salt water to the ejector 125; Apparatus for producing purified water and sterilizing water, characterized in that consisting of the valve B (126) and the valve C (127) to control the pipe connected to the ejector (125). The method of claim 1, The electrolytic device unit is a device for producing purified water and sterilized water, characterized in that for applying a heterogeneous ion exchange membrane (115) using an anion exchange resin or a cation exchange resin powder as a raw material. The method of claim 1, The electrolytic device unit is purified water and sterile water production apparatus characterized in that to remove less than 30% of negative (positive) ions when producing a weakly alkaline beverage of pH 9 or less by supplying a current of less than 1 ampere (A). The method of claim 1, The injector suction filter 123 of the brine supply unit fills the material capable of forming a capillary tube such as a nonwoven fabric in the suction pipe 124 so that the brine rises to a certain height by a capillary phenomenon so as to be supplied to the ejector 125. Apparatus for producing purified water and sterilizing water. The method of claim 5, The injector suction filter 123 is purified water and sterilized water production apparatus characterized in that the salt water injection is made by controlling the amount of salt water by reducing the cross-sectional area.