KR102443730B1 - Rotary electrode type electrolysis device - Google Patents

Abstract

The present invention relates to an electrolysis device with a rotary electrode structure fixing a negative electrode but rotating a positive electrode to prevent deterioration of durability of electrodes. More specifically, the electrolysis device with a rotary electrode structure comprises: a body member through which wastewater flowing into the inside is discharged to the outside; and an electrolysis member electrolyzing the wastewater inside the body member by a control signal from a controller to acquire usable water. The electrolysis member includes: a negative electrode stator installed on the inner wall of the body member at a predetermined interval in the longitudinal direction and having a negative (-) property of a low potential; a motor installed outside the body member so that a rotatable drive shaft is inserted into the body member through the same; and a plurality of positive electrode rotors installed in the longitudinal direction of the drive shaft opposite to the electrode stator to rotate and having a positive (+) property of a high potential.

Description

Electrolysis device having a rotary electrode structure {Rotary electrode type electrolysis device}

The present invention relates to an electrolysis device having a rotating type electrode structure in which the negative electrode is fixed but the positive electrode is rotated.

A lot of research and development has been carried out on the electrolysis device while changing the material, shape, and structural form of the electrolysis reactor for the anode and cathode electrodes. There are plate type, rod type, mesh type, and tube type in the shape of the positive electrode and the negative electrode, which have been widely developed by the researchers of the electrolysis device.

The characteristics of the electrolytic reaction show different results depending on the structural shape of the electrolytic reactor and the geometric structures of the anode and cathode electrodes. Therefore, determining the structure of an appropriate electrolytic electrode or electrolysis reactor becomes an important design factor in the electrolysis device, which is also linked to the efficiency of removing pollutants in the water treatment to be treated and the convenience of operation and management of the electrolysis device.

The principle of removal of pollutants by electrolysis reaction is the direct anodic oxidation process, which is decomposed by electron transfer reaction between OH radicals adsorbed on the surface of the electrode and pollutants, and the strong It is known as an indirect oxidation process in which the bulk is decomposed by an oxidizing agent, ie, hypochlorous acid, ozone, hydrogen peroxide, or oxidized metal ions.

Recently, research on an electrolysis device capable of efficiently processing in the bulk area has been conducted while paying attention to the treatment by the indirect oxidation process among the removal principles of pollutants. In particular, the removal of pollutants by the electrolysis reaction is useful when a large amount of NaCl is present in the wastewater. NaCl in the wastewater generates chlorine gas (Cl2) at the anode and hydrogen gas (H2) at the cathode by the electrolysis reaction. make it They decompose contaminants as they change into hypochlorous acid (HOCl) and hypochlorite ion (OCl-) in the bulk region according to changes in temperature and pH.

In addition, if a longer residence time is given to these oxidizing substances, they change into chlorite ions (Chlorite, ClO2-) and chlorate ions (Chlorate, ClO3-), which are known as stronger oxidizing agents than hypochlorous acid or hypochlorite ions, and organic substances in wastewater reacts to decompose contaminants.

On the other hand, the anode or cathode electrode used in the conventional electrolysis device described above takes a method of decomposing contaminants by maximizing the reaction time with organic substances in wastewater by taking a fixed type method. Electrolysis device technology of fixed electrode method decomposes contaminants due to stagnant reaction in the reaction tank, which slows down the reaction rate and takes a long time. Due to its compactness, durability is deteriorated due to foreign substances, and frequent maintenance is required.

In other words, in order to meet the target value for the organic material concentration, the operation must be performed by adjusting the contact area of the electrode, the residence time, and the current density per unit time (mA/cm2). Accordingly, there is a problem in that the processing speed per hour is reduced due to an unnecessary increase in electrical resistance and current density.

Domestic Registered Patent No. 10-1144739 (Announcement Date: 2012.05.24.) Domestic Registered Patent No. 10-1612099 (Announcement Date: 2016.04.14.) Domestic Registered Patent No. 10-1844915 (Announcement Date: 2018.05.18.)

In order to solve the above-mentioned conventional problems, the present invention reduces the process time by minimizing an increase in mass transfer to a fluid and an unnecessary increase in current density when performing a water treatment operation to remove contaminants from wastewater, but an electrolysis device using foreign substances The purpose is to prevent deterioration of the durability of the electrodes constituting the .

In order to solve the above-described technical problem, the electrolysis device having a rotating electrode structure according to the present invention is the body member by the control signal of the body member 100 and the control unit 300 from which the wastewater introduced into the body is discharged to the outside. (100) including an electrolysis member 200 for obtaining usable water by electrolyzing wastewater from the inside, wherein the electrolysis member 200 is installed to have a predetermined interval on the inner wall of the body member 100 in the longitudinal direction A negative stator 210 having a negative potential (-) property of a low potential, and a motor 230 installed outside the body member 100 so that a rotatable driving shaft 231 is inserted thereinto into the body member 100. And it is characterized in that it comprises a positive electrode rotor 220 having a property of a positive (-) high potential is installed in the longitudinal direction of the driving shaft (231) opposite to each other and the negative stator (210) rotates.

In addition, the body member 100 is a body 110 molded in a pipe (PIPE) shape using a polycarbonate material, and the body 110 is detachably coupled to at least one part of the upper or lower portion of the body. At least one or more finishing plates 120 for maintaining the airtightness of 110 and the closing plates 120 are provided as a pair to communicate with the inside of the body 110, one of which is wastewater inflow, and the other It is preferable to include an openable and openable valve 130 through which the used water is discharged.

In addition, the anode rotor 220 is formed in a plurality of radially on the outer surface of the drive shaft 231, the distance between the end of each of the anode rotor 220 and the end of the cathode stator 210 facing each other is 80 to 100 mm, The thickness of each of the anode rotor 220 and the cathode stator 210 is 150 to 200 mm, and the distance between each of the anode rotors 220 or each of the cathode stators 210 adjacent to each other is 100 to 120 mm. it is preferable

In addition, the rotation speed of the motor 230 has a rotation speed of 800 to 1,000 rpm, the negative stator and the positive rotor are preferably formed of any one of aluminum, iron, and an insoluble oxide electrode material (Dimensionally Stable Anode, DSA). do.

According to the present invention, a plurality of negative stators installed to have a fixed shape inside the body, and a plurality of positive rotors rotatably inserted into the body, differently from the prior art, are used in the control unit in a state in which wastewater is introduced into the body. By controlling the electrolysis for a certain period of time, reusable water is quickly generated, and at the same time, the generation of foreign substances is significantly reduced, thereby reducing the need for maintenance.

1 is a view showing an electrolysis device having a rotating electrode structure according to the present invention.
Figure 2 is a view showing a body member for the electrolysis device having a rotary electrode structure according to the present invention.
3 is a view showing an electrolysis member for the electrolysis device having a rotating electrode structure according to the present invention.
4 is a conceptual diagram of a flotation separation system and a sedimentation separation system using an electrolysis device having a rotating electrode structure according to the present invention.

Hereinafter, various embodiments will be described in more detail with reference to the accompanying drawings. The embodiments described herein may be variously modified. Certain embodiments may be depicted in the drawings and described in detail in the detailed description. However, the specific embodiments disclosed in the accompanying drawings are only provided to facilitate understanding of various embodiments. Therefore, the technical idea is not limited by the specific embodiments disclosed in the accompanying drawings, and it should be understood to include all equivalents or substitutes included in the spirit and scope of the invention.

Terms including an ordinal number, such as first, second, etc., may be used to describe various elements, but these elements are not limited by the above-described terms. The above terminology is used only for the purpose of distinguishing one component from another component.

In the present specification, terms such as "comprises" or "have" are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other features It is to be understood that this does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof. When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but it is understood that other components may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

In addition, in describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be abbreviated or omitted.

Hereinafter, with reference to the accompanying drawings, an electrolysis device having a rotating electrode structure according to the present invention (hereinafter, simply referred to as 'electrolysis device') will be described in detail.

First, as shown in FIG. 1 , the electrolysis device 1 according to the present invention largely includes a body member 100 and an electrolysis member 200 , but the electrolysis device 1 is a raw water tank 10 . , a flotation separation system using fine bubbles including a microbubble generator 20 and a flotation reaction tank 30 or a sedimentation separation system including a raw water tank 10 and a sedimentation reactor 40, respectively, and introduced wastewater is electrolyzed to change it into used water that can be reused (see Fig. 4).

In more detail, as shown in FIGS. 1 and 2 , the body member 100 can be changed into used water through the electrolysis of the electrolysis member 200 to be described later. It includes a body 110 , a finish plate 120 , and a plurality of valves 130 to provide a space therein.

For example, as shown in the figure, the body 110 formed of a metal material is formed in the shape of a cylindrical tube (PIPE) having an upper and lower opening and a longitudinal hollow formed therein, and the opened upper and lower portions are separated and coupled. It is closed by the possible closing plate 120 so that the airtightness inside the hollow part can be maintained.

The outer surface of the body 110 is provided so as to be wrapped with a polycarbonate material, and a plurality of cathode stators 210 are provided at the same intervals in the longitudinal direction of the body 110 in the inner wall of the anode stator 210 and Electrolysis is performed with the anode rotor 220 rotating to face each other in the longitudinal direction (horizontal direction in the drawing), so that the wastewater flowing into the body 110 can be reused by electrolysis for a certain period of time. make it changeable

In addition, the finishing plate 120 molded of the same material as the above-described body 110, as shown, is molded to have a plate shape as a whole so that the open upper and lower portions of the body 110 can be closed. By mutually fastening by means of fastening means composed of bolts and nuts to maintain airtightness inside the body 110 , the wastewater introduced into the body 110 as well as the external outflow of used water changed through electrolysis so that this can be prevented.

At this time, on the outer surface of the pair of closing plates 120 installed on the upper and lower portions of the body 110, a control signal from the control unit 300 or a valve 130 capable of manually opening and closing operation may be communicated with the inside of the body 110. It is desirable to be installed so that the inflow or discharge of wastewater or used water is controlled.

On the other hand, in the present invention, the finishing plate 120 has an advantage of ease of maintenance for the electrolysis member 200 by combining a pair of the upper and lower openings of the body 110, but this is one embodiment. It is also possible to be used in combination with a single configuration when only one of the upper or lower portions of the body 110 is opened, if necessary.

Furthermore, a separate discharge valve (not shown) for discharging foreign substances deposited on the inner bottom surface of the body 110 to the outside together with the wastewater is provided on the outer surface of the finishing plate 120 provided at the lower portion of the body 110 . It is possible.

And, as shown in FIGS. 1 and 3 , the electrolysis member 200 penetrates from the outside to the inside of the body 110 described above, but is installed so as to be controllable by the control unit 300 inside the body 110 . It includes a negative pole stator 210 , a positive pole stator 210 , and a motor 230 as a configuration for changing the used water by applying electrolysis to the wastewater introduced into the furnace.

For example, the cathode stator 210 formed of a material of aluminum is formed to have the shape of a ring as a whole, and as shown, a plurality of the cathode stators 210 are provided on the inner wall of the body 110 to have the same distance in the longitudinal direction, and each of the cathodes The stator 210 receives a negative electrode having a low potential through a negative electrode applying terminal 211 formed on the body 110 electrically connected to the control unit 300 .

In addition, the anode stator 210 is preferably formed of any one of iron or an insoluble oxide electrode material (Dimensionally Stable Anode, DSA) in addition to aluminum.

In addition, the anode rotor 220 is molded of the same material as the cathode stator 210 and, as shown, based on an arbitrary central point of the drive shaft 231 having a length in the lateral direction (vertical direction in the drawing). A plurality of negative stator 210 ends and a plurality of radially facing each other are provided, and a positive electrode having a high potential is provided through a positive electrode applying terminal 221 formed on the body 110 electrically connected to the control unit 300 to receive a negative electrode Electrolysis of wastewater together with the cathode stator 210 made of

The anode rotor 220 is provided on the upper portion of the body 110 by a motor 230 that rotates the drive shaft 231 in at least one of a forward (clockwise) or reverse direction by a control signal from the controller 300. It rotates to implement the electrolysis of wastewater together with the cathode stator 210, and the rotation speed of the motor 230 is 800 to 1,000 rpm.

On the other hand, the distance D1 between the end of each anode rotor 220 and the end of the cathode stator 210 facing each other is 80 to 100 mm, and the thickness of each of the anode rotor 220 and the cathode stator 210 ( T) is 150 to 200 mm, and the distance D2 between each of the anode rotors 220 or each of the cathode stators 210 adjacent to each other is a preferred installation method to maintain 100 to 120 mm, such an installation Through the rotation of the anode rotor 220, the mass transfer is improved and at the same time, the electrical resistance value is lowered, but the amount of electricity consumption is reduced, and It has the advantage that the processing speed (50% or less) for obtaining is made quickly.

In addition, the amount of the coagulant used to treat the wastewater is lowered to about 20% compared to the conventional electrolysis device, so that a separate water purification step for the generated used water is unnecessary.

Furthermore, the total cost reduction effect of the electrolysis reaction is realized in order to improve the current performance by improving the turbulence reaction state by the rotation of the anode rotor 220, which can be realized due to the minimization of electrode resistance, It also has the advantage of reducing the amount of foreign substances (sludge) generated inside the body 110 during electrolysis to 50% or less compared to the prior art.

On the other hand, the driving shaft 231 in the present invention is made of two powders including first and second actuators 231a and 231b that can be separated and coupled to each other as shown, the first and second actuators ( First and second contact terminals 233a and 233b are formed at the joint where 231a and 231b are coupled, and may have a structure electrically connected to the controller 300 through the positive electrode applying terminal 221 .

That is, the positive electrode applying terminal 221 passing through the body 110 so as to be electrically connected to the control unit 300 is electrically connected to the first contact terminal 233a through the first driving body 231a. The contact terminal 233a is a second actuator formed inside the second actuator 231b when the first actuator 231a and the second actuator 231b are mutually coupled (coupled by screw or bolt pressure). It is electrically connected to the contact terminal 233b, and the second contact terminal 233b is electrically connected to the coupling groove 235 and a plurality of positive rotors 220 that are detachably fitted and coupled to the positive electrode (+). This is to allow the electric potential to be applied to the control unit 300 .

As described above, the electrolysis device 1 according to the present invention is rotatable inside the body 110 and a plurality of cathode stators 210 installed to have a fixed shape inside the body 110 differently from the prior art. A plurality of anode rotors 220 inserted into the body 110 cause electrolysis for a certain period of time under the control of the control unit 300 in a state where wastewater is introduced into the body 110, so that reusable used water is quickly generated and At the same time, the generation of foreign substances is significantly reduced, and the effect of reducing the need for maintenance is realized.

As described above, in the present invention, specific matters such as specific components, etc., and limited embodiments and drawings have been described, but these are only provided to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , various modifications and variations are possible from these descriptions by those of ordinary skill in the art to which the present invention pertains.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and not only the claims to be described later, but also all those with equivalent or equivalent modifications to the claims will be said to belong to the scope of the spirit of the present invention. .

1: Electrolysis device having a rotating electrode structure according to the present invention
100: body member
110: body 120: finish plate
130: valve
200: electrolysis member
210: negative stator 211: negative electrode applying terminal
220: positive rotor 221: positive applying terminal
230: motor 231: drive shaft
231a: first actuator 231b: second actuator
233a: first contact terminal 233b: second contact terminal
235: coupling groove
300: control unit
10: raw tank
20: microbubble generator
30: flotation separation reactor
40: precipitation tank

Claims (4)

a body member 100 through which wastewater introduced into the interior is discharged to the outside; and
The electrolysis member 200 for obtaining usable water by electrolyzing the wastewater inside the body member 100 according to the control signal of the control unit 300;
The electrolysis member 200 is installed to have a predetermined interval on the inner wall of the body member 100 in the longitudinal direction, the negative electrode stator 210 having a low potential negative (-) property, the body member 100 into the interior. The motor 230 and the cathode stator 210 installed outside the body member 100 so that the rotatable driving shaft 231 is inserted therethrough is installed in the longitudinal direction of the driving shaft 231 to face each other and rotates, but the potential is Includes a positive rotor 220 having a high positive (-) property,
The body member 100 is detachably coupled to a body 110 formed in a PIPE shape using a polycarbonate material, and at least one of the upper and lower portions of the body 110 to be detachably coupled to the body 110 . ) at least one or more finishing plates 120 to maintain the airtightness and installed on the finishing plate 120 are provided as a pair to communicate with the inside of the body 110, one of which is wastewater inflow, and the other is used Includes an openable and openable valve 130 through which water is discharged,
A plurality of the anode rotors 220 are radially formed on the outer surface of the driving shaft 231, and the distance D1 between the ends of the anode rotors 220 and the ends of the cathode stator 210 facing each other is 80 to 100 mm. and the thickness T of each of the anode rotor 220 and the cathode stator 210 is 150 to 200 mm, and each of the anode rotors 220 or each of the cathode stators 210 adjacent to each other. The distance D2 is 100 to 120 mm,
The rotation speed of the motor 230 has a rotation speed of 800 to 1,000 rpm, the negative stator 210 and the positive rotor 220 are aluminum, iron, and an insoluble oxide electrode material (Dimensionally Stable Anode, DSA) any of An electrolysis device having a rotating electrode structure, characterized in that it is molded into one.
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