KR20100019843A - Method and apparatus for cleaning water - Google Patents

Abstract

PURPOSE: A method for purifying water and a device thereof are provided to improve accuracy of a process, and to reduce labor costs and time used for performing processes for removing and adsorbing organic materials and disinfecting water in one reaction tank. CONSTITUTION: A purification device(100) includes the following: an organic material removing reaction bath removing organic materials and producing HCIO using NaCl after adsorbing the organic materials on a first carbon electrode; a water disinfectant reaction bath disinfecting the water after producing HCIO; a water desalinization reaction bath(130) removing inorganic ions with electrosorption principles; and a purified water tank(170) storing the purified water by performing at least one or more functions such as organic material removal, disinfection and desalination.

Description

Method and apparatus for purifying water {METHOD AND APPARATUS FOR CLEANING WATER}

The present invention relates to a method and a system for purifying water, and more particularly, water containing a large amount of components or inorganic salts of contaminated materials by integrating an organic material removal process, a disinfection process, and a desalination process if necessary. It relates to a method and a system for purifying.

In general, seawater, salty water, domestic water, industrial water, and sewage for reuse purposes include components of contaminated substances or inorganic salts in the water. Purification devices for water treatment have been developed to purify water containing components of such contaminated substances or inorganic salts.

In general, a water treatment purifier is included in contaminated water to remove odors and organic substances that are harmful to a human body, to disinfect bacteria such as microorganisms and bacteria, and to decontaminate by removing inorganic ions. General term for a device for purifying contaminated water to provide safe water for humans from water.

Examples of the purification device for purifying the water include the following. Activated charcoal filter for removing organic matter is to remove organic carbon contained in contaminated water on activated carbon and then, when saturated, remove activated carbon from filter or dispose of it, or consign organic carbon adsorbed to specialized companies for treatment and recycling. Etc., there was a problem in that organic matter was removed through a time-consuming and cumbersome process.

On the other hand, for the purpose of disinfecting microorganisms, bacteria, etc., a method of disinfecting contaminated water is used by intermittently injecting NaOCl into the contaminated water. This method has a problem that smooth disinfection was not made because the inaccurate amount of the drug must be injected through a person, not automatically.

In addition, the method for desalting is to remove the inorganic ions in the water by using an ion exchange resin, etc., after the ion exchange resin is saturated with the inorganic ions is regenerated using a regeneration chemical such as hydrochloric acid, caustic soda. As such, the desalination apparatus has a problem in that non-environmental chemicals such as hydrochloric acid, caustic soda, etc. must be used.

As described above, the conventional purification technology is not only having individual problems as described above for each process of eliminating organisms, disinfecting microorganisms, and desalting processes, but also being performed through individual purification apparatus because each process method is different. There is a problem that is being performed inefficiently, such as increase in manpower, equipment cost.

The present invention has been made in order to solve the above-mentioned conventional problems, the process of removing organic matter, disinfection process, desalination process is carried out in a single device, and automatically performed to purify water that can improve the process efficiency It is an object of the present invention to provide a method and system.

It is another object of the present invention to provide a method and system for purifying water which adsorbs organic matter on a carbon electrode to electrolyze to remove organic matter.

It is another object of the present invention to provide a method and system for purifying water for disinfecting bacteria such as microorganisms and bacteria by generating hypochlorous acid (HOCL) using an inert carbon electrode for electrolysis.

It is another object of the present invention to provide a method and system for purifying water for removing inorganic ions using the electrosorption principle.

In order to achieve the object of the present invention as described above, and to perform the characteristic functions of the present invention described below, the characteristic configuration of the present invention is as follows.

According to one aspect of the present invention, a method for purifying water by integrally removing, disinfecting and desalting organic materials, comprising: (a) adsorbing the organic material to a first carbon electrode, and then applying NaCl to a suitable voltage; A step of removing an organic material to remove the adsorbed organic material by electrolysis to generate HCIO using (b) a second carbon electrode (+) to which voltage is applied using NaCl to generate HCIO by electrolysis; Disinfection process step of disinfecting the water by (c) applying an appropriate voltage to the third carbon electrode (+) to remove the inorganic ions contained in the water by adsorbing on the carbon electrode (+) using the electrosorption principle Desalting process step, and (d) performing the at least one or more of the steps (a), (b), (c) is provided a method comprising the step of storing the purified water in the purified water reservoir.

According to another aspect of the present invention, there is provided a purifying apparatus for purifying water by integrally removing, disinfecting and desalting organic materials, wherein the organic matter is adsorbed on a first carbon electrode, and then NaCl is applied by applying an appropriate voltage. Organic material removal reaction unit for removing the adsorbed organic matter by the electrolysis to generate HCIO by using, the second carbon electrode to which the voltage is applied using the NaCl to generate HCIO by electrolysis to disinfect the water Disinfection reaction tank unit, water desalination reaction tank unit to remove the inorganic ions contained in the water by adsorbing to the carbon electrode (+) by using an electrosorption principle by applying an appropriate voltage to the third carbon electrode (+), and the organic material Provided is a purification apparatus including a purified water storage unit configured to perform at least one or more of removal, disinfection, and desalination functions to store purified water.

According to the present invention, the process of adsorbing, removing organic matter, disinfecting water, and desalting can be simultaneously performed automatically in one reactor, thereby reducing time, reducing labor costs, and improving process accuracy. The efficiency of the process can be improved throughout the process.

More specifically, it is possible to obtain an effect of automatically separating and removing the adsorbed organic material through the electrolysis that adsorbs the organic material to the activated carbon electrode to generate HCIO.

In addition, by generating the HCIO using the principle of the electrolytic action of the inert carbon electrode, it is possible to obtain the effect of automatically disinfecting the water automatically without using the chemical by the HCIO.

In addition, it is possible to obtain an effect of automatically removing the inorganic ions contained in the water without the use of chemicals by using the electrosorption principle by the activated carbon electrode.

DETAILED DESCRIPTION The following detailed description of the invention refers to the accompanying drawings that show, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be embodied in other embodiments without departing from the spirit and scope of the invention with respect to one embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention, if properly described, is defined only by the appended claims, along with the full range of equivalents to which such claims are entitled. Like reference numerals in the drawings refer to the same or similar functions throughout the several aspects.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention.

[Preferred Embodiments of the Invention]

As will be described throughout this specification, water refers to components of contaminated substances (e.g. organics, microorganisms, bacteria, etc.) or inorganic salts released from seawater, salty water, domestic water, industrial water and sewage for reuse purposes. Note that it should be understood to imply water included.

Configuration of Purification Device 100

1 is a diagram illustrating an apparatus 100 for purifying water according to an embodiment of the present invention.

Referring to FIG. 1, the apparatus 100 for purifying water according to an embodiment of the present invention includes a NaCl reservoir 110, a first way valve 120, a reactor 130, and a power supply 140. ), The second way valve unit 150, the drain tank 160 and the purified water storage unit 170 may be included.

First, the NcCl storage tank 110 of the present invention performs a function of storing NaCl required to disinfect bacteria such as organic matter removal, microorganisms, and bacteria. At this time, NaCl is preferably stored at 3-4% concentration.

The first way valve unit 120 of the present invention performs a function of directly supplying water to the reaction tank 130, which will be described later when water is introduced from the outside, or NaCl storage tank 110 for NaCl introduced from the outside Can be supplied as

Reactor 130 of the present invention serves to perform at least one or more of the process of removing organic matter, disinfection, desalination process for the water supplied from the first way valve unit 120. To this end, the reaction unit 130 includes at least one of the active carbon electrode and the metal electrode as the negative electrode to remove the organic material. Therefore, the reaction tank 130 adsorbs the organic material contained in the incoming water by using the activated carbon electrode and the metal electrode, and then electrolyzed through the introduced NaCl to generate hypochlorous acid (HOCL) to adsorb the organic material. Can be removed separately.

In addition, the reaction tank 130 of the present invention is equipped with at least one inert carbon electrode and a negative electrode as a positive electrode and a metal electrode as a negative electrode to perform the disinfection process for water to disinfect water by electrolysis through NaCl (sterilization action) It is possible to disinfect water by generating HOCL which activates).

In addition, the reactor 130 of the present invention is provided with at least one metal electrode as the active carbon electrode and the negative electrode as a positive electrode to perform a desalting process for the incoming water, water by using the electrosorption principle by the activated carbon electrode Desalting can be carried out by removing the inorganic ions contained in the.

On the other hand, the structure and function of the reaction tank 130 for performing at least one or more of the process of removing organic matter, disinfecting, desalting the water with respect to water will be described later with reference to FIG. .

The power supply unit 140 of the present invention applies an appropriate positive voltage to an inert or activated carbon electrode provided according to a process of removing organic matter, disinfecting, and desalting, and applies an appropriate negative voltage to a metal electrode to activate or inactivate carbon. The electrode helps to electrolyze or electrosorb through NaCl to the incoming water. The method of applying the appropriate positive voltage or the negative voltage by the power supply unit 140 will be described in more detail later with reference to FIG. 3.

The second way valve unit 150 of the present invention is the water containing the removed organic matter discharged from the reaction tank unit 130 for organic matter removal / desalination and the water containing the removed inorganic ions to the drain tank 160 to be described later A function of sending or discharging the sterilized water discharged from the disinfection tank unit 150 and the purified water discharged from the reaction tank unit 130 for removing / desalting organic matter to the purified water storage unit 170 to be described later. It can also be done.

Drainage unit 160 of the present invention performs a function of storing the water containing the removed organic matter and water containing the removed inorganic ions. In other words, it is possible to temporarily store the treated water discharged by the reaction tank unit 130 for organic matter removal / desalting and send it to the sewage treatment plant.

The purified water storage unit 170 of the present invention performs the function of storing the sterilized water discharged by the disinfection tank unit 150 and the purified water discharged from the reaction tank unit 130 for organic matter removal / desalination.

Of reactor 130  Configuration and features

2 is a view for explaining in more detail the removal process, disinfection process, desalination process of the organic matter performed by the reaction vessel 130 according to an embodiment of the present invention.

2, the reactor 130 according to an embodiment of the present invention includes a first current collector 135 to which a positive voltage supplied from the power supply unit 140 is applied, and a second current collector to which a negative voltage is applied ( 136, carbon electrodes 131 and 132 formed on both surfaces of the first current collector 135, and metal electrodes 133 and 134 formed on both sides of the second current collector 136.

The first current collector 135 of the present invention is made of a conductive material, and receives a positive voltage from the power supply unit 140 to apply a positive voltage (+) to the carbon electrodes formed on both surfaces thereof. The second current collector 136 of the present invention is made of the same material as the first current collector 135, and receives a negative voltage from the power supply unit 140 to apply a negative voltage (-) to the metal electrodes formed on both sides Do this.

The carbon electrodes 131 and 132 of the present invention may be activated carbon electrodes (first carbon electrode, third carbon electrode) or inert carbon electrodes to perform a function of electrolysis or electrosorption on water introduced by applying a positive voltage. Second carbon electrode), and the metal electrodes 133 and 134 may be made of a general metal having good conductivity, and may function as a negative electrode in response to the carbon electrode (+). The carbon electrodes 131 and 132 may perform a process of removing organic matter to water, a disinfection process to disinfect bacteria such as microorganisms and bacteria, and a desalting process, respectively. That is, the first carbon electrode (+) for the organic matter removal process corresponding to the metal electrode (-), the second carbon electrode (+) for the disinfection process corresponding to the metal electrode (-), and the desalting process corresponding to the metal electrode (-) A plurality of third carbon electrodes (+) may be formed. However, in the present exemplary embodiment, one carbon electrode (+) having a reference numeral 132 and one metal electrode (−) having a reference numeral 133 corresponding to the carbon electrode (+) are used for convenience. Through the description of the function of each process through, the actual electrode is composed of one or more for each process.

First, the case where the carbon electrode (+) of 132 and the metal electrode (-) of 133 is used for the removal process of organic substance is demonstrated. When water containing organic matter flows in between the carbon electrodes 132 and + and the metal electrodes 133 and-, only carbon is adsorbed to the carbon electrodes 132 and + due to the saturation effect of adsorbing organic matter. As a result, no organic substance is adsorbed to the metal electrodes 133 and-.

Subsequently, a DC proper voltage is applied to the carbon electrodes 132 and + in which the organic material is saturated through the current collector 135 from the power supply unit 140. In this case, when the appropriate voltage applied is a voltage of 1.4 or more, electrolysis can be effectively performed. In addition, when NaCl flows into the electrodes 132 and 133 from the NaCl reservoir 110 to the carbon electrodes 132 and + in which the organic material is saturated, the action of electrolysis occurs. At this time, the reaction of the electrodes 132 and 133 to generate the electrolytic action when the concentration of NaCl introduced is 3-4% is shown in Equation 1.

(Equation 1)

Aqueous solution: NaCl ---> Na + + Cl-

         H2O ---> H + + OH-

Anode Reaction: 2Cl--2e- ---> Cl2

            4OH--4e- ---> O2 + 2H2O

            Cl2 + H2O ---> HCL + HClO

Cathode Reaction: 2H + + 2e- ---> H2

            2Na + + 2e- ---> 2Na

            2Na + + 2H20 ---> 2NaOH + H2

Total reaction: 2NaCl + 3H2O ---> NaClO + NaCl + 2H2O + H2

As in Equation 1, by the reaction of the electrodes 132 and 133 in which the electrolytic action occurs, the carbon electrodes 132 and + generate hypochlorous acid (HCIO) to decompose organic substances adsorbed to the electrode by hypochlorous acid. It can be removed.

Next, the case where the carbon electrode (+) of 132 and the metal electrode (-) of 133 are used for the water disinfection step will be described. When disinfectant water flows in between the carbon electrodes 132 and + and the metal electrodes 133 and-, the electrolytic action is performed on the carbon electrodes 132 and + through NaCl rather than adsorption due to the effect of inert carbon. By generating hypochlorous acid it is possible to smoothly disinfect microorganisms, bacteria, and the like. Since the process and the electrode reaction until the generation of hypochlorous acid is the same as in Formula 1 described above it is omitted. However, only one process may be performed by applying a voltage to the organic material removing carbon electrode and the disinfecting carbon electrodes 132 and +, and two processes may be performed at the same time.

Here, NaCl of the present invention is very effective in removing and disinfecting organic matters when the concentration is maintained at 3-4%, but when the concentration is higher than that, an electrode reaction as shown in Equation 2 is generated to produce hypochlorous acid. Since it may not be possible to maintain the concentration of NaCl 3-4% it can be seen that it is very important.

(Equation 2)

Aqueous solution: NaCl ---> Na + + Cl-

         H2O ---> H + + OH-

Anode Reaction: 2Cl--2e- ---> Cl2

Cathode Reaction: 2H + + 2e- ---> H2

Total reaction: 2NaCl + 2H2O ---> Cl2 + 2NaOH + H2

Finally, the case where the carbon electrode (+) of 132 and the metal electrode (-) of 133 is used for the desalting process will be described. When desalination water flows in between the carbon electrodes 132 and + and the metal electrodes 133 and-, the carbon electrodes 132 and + are introduced into the carbon electrodes 132 and + through the current collector 135 from the power supply 140. DC appropriate voltage is applied. Therefore, the carbon electrodes 132 and + can perform an electrosorption action in which a saturation phenomenon of adsorbing inorganic ions related to desalination occurs due to the action of activated carbon. As a result, saturated inorganic ions must be decomposed and removed from the carbon electrodes in the carbon electrodes 132 and +, and the inorganic ions are decomposed and removed by changing the poles of the carbon electrodes 132 and + and the metal electrodes 133 and-. can do.

That is, the voltages applied to the carbon electrodes 132 and + and the metal electrodes 133 and-are the same, but the voltage is set so that the carbon electrode 132 is a negative electrode and the metal electrode 133 is a positive electrode. It may be desirable to supply the electrode 132 and the metal electrode 133. Accordingly, the saturated inorganic ions can be separated and removed from the carbon electrode 132 which is the negative electrode.

Example of the Effect of Organics Removal Process

3 is a view for explaining the effect of the organic material removal process according to an embodiment of the present invention.

As shown in the table of Figure 3, the experiments performed in connection with the organic material removal process according to an embodiment of the present invention has an electrode surface area of 24 cm 2, current amount 1A, voltage 5V, reaction time 1hr, reaction temperature 18 ~ It was performed under the conditions of 20 ° C., showing a removal rate of more than 95% of Chemical Oxygen Demands (COD). In this case, the COD is a value measured based on organic matter contained in water generated from water of a power plant, such as desulfurized wastewater.

On the other hand, although not shown in the experiments conducted in connection with the disinfection process for disinfecting microorganisms, bacteria, hypochlorous acid produced by electrolysis is easy to remove the cell membranes of organisms such as microorganisms, bacteria, etc. contained in water due to the small molecules. It could penetrate, killing organisms such as microbes and bacteria. At this time, the residual chlorine was able to further enhance the disinfection effect when injected at 0.1 to 0.4 ppm. In addition, although not shown, in the experiments performed in connection with the desalination process, since the deionization was possible up to 0 ppm when the concentration of inorganic ions was 10000 ppm or less, it may be preferable to adjust the removal amount appropriately according to necessity.

In the above description, specific matters such as specific components of the present invention have been described by the limited embodiments and the drawings, but these are provided to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. Those skilled in the art can make various modifications and variations from this description.

Therefore, the spirit of the present invention should not be limited to the embodiments described above, and all of the equivalents or equivalents of the claims, as well as the claims below, are included in the scope of the spirit of the present invention. I will say.

1 is a diagram illustrating an apparatus 100 for purifying water according to an embodiment of the present invention.

2 is a view for explaining in more detail the removal process, disinfection process, desalination process of the organic matter performed by the reaction vessel 130 according to an embodiment of the present invention.

3 is a view for explaining the effect of the organic material removal process according to an embodiment of the present invention.

Claims (14)

As a method for purifying water by integrally removing, disinfecting and desalting organic matter, (a) removing the organics by adsorbing the organics to the first carbon electrode (+), and then applying an appropriate voltage to remove the adsorbed organics by electrolysis to generate HCIO using NaCl, (b) a disinfection process step of disinfecting the water by generating HCIO by the second carbon electrode (+) to which voltage is applied using NaCl by electrolysis; (c) a desalination process step of applying an appropriate voltage to the third carbon electrode (+) to adsorb and remove the inorganic ions contained in the water to the carbon electrode (+) by using an electrosorption principle, and (d) performing at least one or more of steps (a), (b) and (c) to store the purified water in the purified water storage tank How to include. The method of claim 1, The method for purifying the water, Using a metal electrode as a negative electrode to cause electrolysis to occur when a voltage is applied. The method of claim 2, In the steps (a) and (b), Method for producing the following electrode reaction using NaCl of 3-4% concentration. Anode Reaction: 2Cl--2e- ---> Cl2             4OH--4e- ---> O2 + 2H2O             Cl2 + H2O ---> HCL + HClO Cathode Reaction: 2H + + 2e- ---> H2             2Na + + 2e- ---> 2Na             2Na + + 2H20 ---> 2NaOH + H2 Total reaction: 2NaCl + 3H2O ---> NaClO + NaCl + 2H2O + H2 The method of claim 2, In step (a), And the organic material is adsorbed when the first carbon electrode acts as an active electrode. The method of claim 2, In step (a), The organic material is removed by using an appropriate voltage of 1.4 or more applied from the outside. The method of claim 2, In step (c), When the third carbon electrode acts as an active electrode, the inorganic ion is adsorbed by using an appropriate voltage of 0.8 to 2.0 V applied from the outside. The method of claim 2, In step (b), And wherein the second carbon electrode generates HCIO by electrolysis when the second carbon electrode acts as an inactive electrode. A purifying apparatus for purifying water by integrating organic matter removal, disinfection and desalination processes, An organic material removal reactor for removing the adsorbed organic material by electrolysis of adsorbing the organic material to the first carbon electrode (+), and then applying an appropriate voltage to generate HCIO using NaCl, A water disinfection tank unit in which a second carbon electrode (+), to which voltage is applied using NaCl, generates HCIO by electrolysis to disinfect the water; A water desalination reaction tank unit applying an appropriate voltage to a third carbon electrode (+) to adsorb and remove inorganic ions contained in the water to the carbon electrode (+) by using an electrosorption principle, and Water purification tank for storing the purified water by performing at least one or more of the organic matter removal, disinfection and desalination functions Purification device comprising a. The method of claim 8, Apparatus for purifying the water, The metal electrode is a negative electrode, characterized in that the electrolysis occurs when the voltage is applied. The method of claim 9, The organic material removal reaction tank and the water disinfection reaction tank, Apparatus characterized in that the following electrode reaction is generated using NaCl of 3-4% concentration. Anode Reaction: 2Cl--2e- ---> Cl2             4OH--4e- ---> O2 + 2H2O             Cl2 + H2O ---> HCL + HClO Cathode Reaction: 2H + + 2e- ---> H2             2Na + + 2e- ---> 2Na             2Na + + 2H20 ---> 2NaOH + H2 Total reaction: 2NaCl + 3H2O ---> NaClO + NaCl + 2H2O + H2 The method of claim 9, The organic material removal reaction tank unit, And the organic material is adsorbed when the first carbon electrode acts as an active electrode. The method of claim 9, The organic material removal reaction tank unit, Apparatus for removing organic matter using a proper voltage of 1.4 or more applied from the outside. The method of claim 9, The water desalination reaction unit, When the third carbon electrode acts as an active electrode, the device is characterized in that the inorganic ion is adsorbed using a suitable voltage of 0.8 to 2.0 V applied from the outside. The method of claim 10, The water disinfection reaction tank unit, And the second carbon electrode generates HCIO by electrolysis when the second carbon electrode acts as an inactive electrode.

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