KR102447551B1 - Bottom-up electrochemical water treatment apparatus - Google Patents

Abstract

The upflow electrochemical treatment apparatus according to an embodiment of the present invention is formed to have a predetermined length so that the contaminated wastewater flowing into the lower portion is purified by the electrochemical treatment and discharged to the upper portion, and at least one open detachable side surface is provided. It includes a housing having a sphere and an electrode cell unit capable of being fastened to the housing through the attachment and detachment hole, and having an electrode plate for performing an electrochemical treatment.

Description

Upflow electrochemical treatment device {BOTTOM-UP ELECTROCHEMICAL WATER TREATMENT APPARATUS}

The present invention relates to an upflow electrochemical processing apparatus capable of easily replacing electrodes and providing stable voltage supply.

Electrochemical water treatment technology is well known in order to compensate for the disadvantages of the existing biological treatment technology. However, practical application has the following limitations.

Specifically, most of the water treatment technology is being conducted in a batch type, there is a disadvantage that cannot be continuously treated in the field. Some water treatment devices with electrochemical treatment technology are designed for continuous treatment upstream, but electrodes are mounted above the water level for fastening and replacement of electrodes.

When the electrode is fastened at a position higher than the water level, corrosion occurs quickly only in the part in contact with the water surface, so there is a problem that the electrode is cut before consumption and the electrode is used unevenly, Therefore, there is a risk of generating noise in the upper fastening part.

In addition, the device to which the electrochemical treatment technology is applied has a problem in that it is difficult to maintain and manage it due to the lack of electrode management technology. That is, scaling occurs on the electrode surface during the electrochemical treatment, so a technology that can efficiently use the anode and the cathode is needed to secure water treatment performance for a long period of time.

In addition, since the water treatment performance of the target material is different according to the characteristics of the electrode metal, a technology capable of applying the electrode in various angles should be sought.

As a related prior art, there is Korean Patent Application Laid-Open No. 10-2020-0074485 (Title of the Invention: Advanced Water Treatment Device Using Electrolytic Adsorption Filtration, Publication Date: June 25, 2020).

SUMMARY OF THE INVENTION The present invention is to solve the above problems, and an object of the present invention is to provide an upflow electrochemical processing device for facilitating replacement of electrodes through a structure in which an electrode cell unit is detachable as a reaction tank on the side of a housing. .

In addition, the present invention provides an upflow electrochemical treatment device that can be applied to an electrode cell unit by combining electrode plates of different materials depending on the quality of the water used for water treatment.

In addition, the present invention provides an upflow electrochemical treatment apparatus for improving efficiency by preventing strong scale of an anode during electrochemical treatment by periodically changing the direction of a current flowing through an electrode through a current switching unit.

The problem to be solved by the present invention is not limited to the problem(s) mentioned above, and another problem(s) not mentioned will be clearly understood by those skilled in the art from the following description.

The upflow electrochemical treatment apparatus according to an embodiment of the present invention is formed to have a predetermined length so that the contaminated wastewater flowing into the lower portion is purified by the electrochemical treatment and discharged to the upper portion, and at least one open detachable side surface is provided. It may include a housing having a sphere and an electrode cell unit capable of being fastened to the housing through the attachment and detachment hole, and having an electrode plate for performing an electrochemical treatment.

In addition, the electrode cell unit according to an embodiment of the present invention is coupled to the cover in a structure spaced apart along the length direction of the cover and the cover and has a rectangular electrode fixing part having an insertion hole of a predetermined size, one side is the It may include an electrode plate detachable to the cover as it is inserted into the insertion hole of the electrode fixing part, and an electrode base having one side in contact with the side surface of the electrode plate as it is inserted into the insertion hole of the electrode fixing part.

In addition, the electrode fixing part according to an embodiment of the present invention includes two fixing members that are separable based on the vertical direction, and the two fixing members have a 'C' shape, so that when they are coupled to each other, the insertion hole can be formed.

In addition, the electrode base according to an embodiment of the present invention may be cross-arranged above or below the insertion hole for each of the electrode fixing parts according to the polarity.

In addition, the material of the electrode plate according to an embodiment of the present invention includes at least one of graphite, iron, and aluminum, and the electrode cell unit may be formed by a combination of electrode plates of different materials.

In addition, the upflow electrochemical processing apparatus according to an embodiment of the present invention is connected to the electrode base to periodically change the polarity of the power supply and the electrode plate for supplying power to the electrode plate to determine the direction of the current. It may further include a current switching unit for switching.

In addition, the upflow electrochemical treatment apparatus according to an embodiment of the present invention may further include a sludge discharge unit for periodically discharging the sediment generated by the electrochemical treatment by the electrode plate.

According to the present invention, by mounting the electrode cell unit on the side of the housing, as all the electrode plates are immersed in water, the entire electrode plate can be used uniformly for water treatment, and only the electrode plate can be easily replaced if necessary, thereby maintaining the device. and economic feasibility necessary for maintenance can be secured.

In addition, according to the present invention, by combining electrode plates of different materials and applying them to the electrode cell unit, it can be applied to various water treatments according to the target water quality.

In addition, according to the present invention, by periodically changing the direction of the current flowing through the electrode, it is possible to prevent strong scale of the anode during electrochemical treatment, thereby improving efficiency.

1 is a perspective view showing the overall shape of an upflow electrochemical treatment apparatus according to an embodiment of the present invention.
2 is a perspective view viewed from the front of the electrode cell unit according to an embodiment of the present invention.
3 is a perspective view viewed from the rear of the electrode cell unit according to an embodiment of the present invention.
4 is a plan view viewed from the top of the electrode cell unit according to an embodiment of the present invention.
5 is a plan view viewed from the rear of the electrode cell unit according to an embodiment of the present invention.
6 is a plan view illustrating an electrode fixing unit according to an embodiment of the present invention.
7 is a view for explaining the material of the electrode plate.
8 is a view showing an electrode plate composed of a combination of different materials according to an embodiment of the present invention.
9 is a plan view illustrating an electrode base according to an embodiment of the present invention.

Advantages and/or features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be embodied in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

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

1 is a perspective view showing the overall shape of an upflow electrochemical treatment apparatus according to an embodiment of the present invention, FIG. 2 is a perspective view of an electrode cell unit according to an embodiment of the present invention, as viewed from the front, and FIG. 3 is this view A perspective view seen from the rear of the electrode cell unit according to an embodiment of the present invention, Figure 4 is a plan view seen from the top surface of the electrode cell unit according to an embodiment of the present invention, Figure 5 is an electrode according to an embodiment of the present invention It is a plan view seen from the rear surface of the cell unit, FIG. 6 is a plan view showing an electrode fixing part according to an embodiment of the present invention, FIG. 7 is a view for explaining the material of the electrode plate, and FIG. 8 is the present invention In an embodiment of the present invention, it is a view showing an electrode plate composed of a combination of different materials, and FIG. 9 is a plan view showing an electrode base according to an embodiment of the present invention.

Referring to FIG. 1 , an upflow electrochemical processing apparatus according to an embodiment of the present invention may include a housing 100 and an electrode cell unit 200 .

The housing 100 may be formed to have a predetermined length so that the contaminated wastewater flowing into the lower portion is purified by electrochemical treatment and discharged to the upper portion.

Specifically, an inlet 110 through which contaminated wastewater is introduced may be provided at a lower portion of the housing 100 , and an outlet 120 through which purified purified water flows out may be provided at an upper portion of the housing 100 . . Accordingly, the bottom-up water treatment by the continuous reactor structure from the bottom to the top can proceed.

The housing 100 may be provided with at least one open attachment/detachment hole (not shown) on the side. An electrode cell unit 200 to be described later may be fastened to the attachment/detachment port.

Specifically, the electrode cell unit 200 including the electrode is fastened to the side of the housing 100 in order to prevent electrode corrosion and noise generated when the electrode is fastened on top of the conventional water treatment device, so that all the electrodes are immersed in water. As a result, the entire electrode can be used for electrochemical treatment.

The electrode cell unit 200 can be fastened to the housing 100 through an attachment/detachment port, and in the present invention, a plurality of units can be fastened to the housing 100 in a multi-stage form.

2 to 5 , the electrode cell unit 200 is a member for performing an electrochemical treatment, and includes a cover 210 , an electrode fixing unit 220 , an electrode plate 230 , an electrode base 240 and an electrode. It may be configured to include a spacer 250 .

The electrode fixing part 220, the electrode plate 230, and the electrode base 240 are coupled to the cover 210, and when the electrode cell unit 200 is fastened to the housing 100, it is screwed to the outer surface of the detachable port, etc. The cover 210 may be mounted through the .

The electrode fixing unit 220 is a member for fixing the electrode plate 230 and the electrode base 240 to be described later to the cover 210, and has a structure spaced apart from the cover 210 in the longitudinal direction of the cover 210. can be combined. That is, the plurality of electrode fixing units 220 may be disposed on the inner surface of the cover 210 with intervals therebetween. For reference, the electrode fixing unit 220 may have a predetermined length in a direction crossing the longitudinal direction of the cover 210 .

The electrode fixing unit 220 may be implemented in a rectangular shape having an insertion hole 221 (not shown) of a predetermined size. Accordingly, the electrode plate 230 and the electrode base 240 may be coupled to the insertion hole 221 of the electrode fixing unit 220 .

The electrode fixing unit 220 may include a first fixing member 220a and a second fixing member 220b that are two fixing members 220a and 220b that are separable in the vertical direction. In detail, as shown in FIG. 6 , the two fixing members 220a and 220b have a 'C' shape, so that an insertion hole 221 may be formed when they are coupled to each other. According to this structure, the electrode fixing unit 220 may have a shape surrounding the electrode plate 230 and the electrode base 240 to be described later. In addition, in order to more stably fix the electrode plate 230 and the electrode base 240 , the electrode plate 230 and the electrode base 240 have bolts 222a penetrating through the upper portions of the electrode fixing unit 220 , respectively. And a fastening structure using a nut (222b) may be provided.

As one side of the electrode plate 230 is inserted into the insertion hole 221 of the electrode fixing unit 220 , it may be detachable from the cover 210 . That is, as the electrode plate 230 is coupled to each electrode fixing unit 220 provided along the longitudinal direction of the cover 210 , a plurality of electrode plates 230 may be provided in one electrode cell unit 200 . can

The electrode plate 230 may perform an electrochemical treatment, which is a chemical reaction that occurs according to an electrical signal to the wastewater flowing into the housing 100 while being inserted into the insertion hole 221 . To this end, the electrode plate 230 may receive current from the electrode base 240 to be described later.

The material of the electrode plate 230 may be implemented in various ways depending on the water treatment use. Specifically, as shown in FIG. 7 , the material of the electrode plate 230 may include at least one of graphite for electrochemical decomposition treatment, iron for electrochemical oxidation treatment, and aluminum for electrochemical coagulation treatment. .

In this case, the electrode cell unit 200 may be formed by a combination of the electrode plates 230 of different materials. For example, as shown in FIG. 8, in the case of general sewage treatment, an electrode made of aluminum or an electrode of a mixture of aluminum and iron can be combined, and in the case of total phosphorus treatment, an electrode made of aluminum can be used, waste oil and When treating wastewater with a high concentration of highly-concentrated, difficult-to-decompose pollutants such as food wastewater, an electrode made of aluminum, an electrode made of iron, and an electrode made of graphite can be combined. Accordingly, by combining the electrode plates 230 of different materials and applying them to the electrode cell unit 200, it can be applied to various water treatments according to the target water quality.

On the other side of the electrode plate 230 , an electrode spacer 250 for maintaining a constant distance between the plurality of electrode plates 230 may be provided, and the electrode spacer 250 passes through the other side of the electrode plate 230 . can be formed.

As one side of the electrode base 240 is inserted into the insertion hole 221 of the electrode fixing unit 220 , the electrode base 240 may come into contact with the side surface of the electrode plate 230 . Accordingly, the electrode plate 230 and the electrode base 240 may be coupled in a state in which they are in contact with each other in one insertion hole 221 . For reference, an epoxy coating is applied to a portion where the electrode base 240 and the electrode plate 230 are inserted into the insertion hole 221 to ensure watertightness.

In this embodiment, by separating the configuration of the electrode for the electrochemical treatment into two components, the electrode plate 230 in which the treatment reaction occurs and the electrode base 240 to which the voltage by the power supply is applied, the electrochemical treatment performance If this falls, only the electrode plate 230 can be replaced, thereby securing economic feasibility required for maintenance and repair of the water treatment device.

The electrode base 240 may be implemented in a 'L' shape, and may have a structure partially protruding toward the cover 210 . That is, as shown in FIG. 9 , a protrusion 242 may be formed on one side of the electrode base 240 , which is a portion inserted into the insertion hole 221 . On the other hand, a concave groove (not shown) may be formed on the inner surface of the cover 210 to which each electrode fixing unit 220 is coupled. Accordingly, as the protrusion 242 is coupled to the groove of the cover 210 in a state in which the electrode base 240 is inserted into the insertion hole 221 of the electrode fixing unit 220 , the fastening force of the electrode base 240 is improved. can

The material of the electrode base 240 is preferably implemented with a material having higher corrosion resistance than that of the electrode plate 230 . For example, when the material of the electrode plate 230 is aluminum or iron, the material of the electrode base 240 is stainless (SUS), etc., and the material of the electrode plate 230 is graphite or graphite containing platinum. When used, it is preferable to use graphite as the material of the electrode base 240 as well.

The thickness of the electrode base 240 is preferably thinner than that of the electrode plate 230 .

The electrode bases 240 may be cross-arranged above or below the insertion hole 221 for each electrode fixing unit 220 so as not to contact each other according to the polarity. For example, the electrode base 240 having a positive pole is disposed on the upper portion of the insertion hole 221 , and the electrode base 240 having a negative electrode may be disposed under the insertion hole 221 , and may be alternately disposed. . It is natural that the structure in which the insertion hole 221 is cross-arranged is not limited thereto and is implemented on the contrary. For reference, the electrode base 240 may be implemented in such a way that the base body is in contact with one side of the electrode plate 230 and an electrode body having a polarity is fastened to the upper or lower portion of the base body.

Meanwhile, in the present invention, the current is connected to the electrode base 240 to switch the direction of the current in order to periodically change the polarity of the power supply 400 and the electrode plate 230 for supplying power to the electrode plate 230 . It may further include a switching unit (not shown).

The power supply unit 400 may be a DC power supply supplying a constant voltage. The constant voltage DC power supply can provide an environment in which a stable water treatment performance can be secured by supplying a constant voltage and controlling the flow of current according to the incoming load.

The capacity of the power supply unit 400 is preferably set according to the characteristics of the incoming wastewater.

The power supply unit 400 may include a configuration for delaying the stop of the circuit in the AC/DC converter in order to prevent an electrical short that may be generated in the process of converting AC and DC.

The current switching unit is connected to the power supply 400 and transmits the received current to the electrode base 240 , but may transfer the current to the electrode base 240 by changing the direction of the current. That is, the current switching unit may be connected to cross the anode and the cathode so as to flow current to the electrode base 240 in a forward or reverse direction, and may be transferred to the electrode base 240 by periodically switching the anode and the cathode. Accordingly, the polarity of the electrode base 240 may be changed periodically by the current switching unit.

The current switched by the electrode base 240 may be transferred to the electrode plate 230 , and the polarity of the electrode plate 230 may also be periodically switched. This is to prevent continuous consumption of the anode as metal salts are precipitated from the anode during electrochemical treatment, so that the polarity of the anode and the polarity of the cathode are periodically changed so that the anode of the electrode plate 230 can be used for a long time. The switching period of the current switching unit is preferably 1 to 2 minutes, and when it is delayed for more than 2 minutes, strong scale is formed in the anode, and the efficiency may be reduced.

Meanwhile, the present invention may further include a sludge discharge unit 300 for periodically discharging the sediment generated by the electrochemical treatment by the electrode plate 230 . Specifically, the sludge discharge unit 300 may periodically discharge the insoluble sediment generated while various organic matter, nitrogen, and phosphorus and other contaminants in the wastewater are removed by the electrode plate 230 . The sludge discharge unit 300 is preferably provided at the lower portion of the housing 100 .

Although specific embodiments according to the present invention have been described so far, various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims described below as well as the claims and equivalents.

As described above, although the present invention has been described with reference to the limited embodiments and drawings, the present invention is not limited to the above embodiments, which are various modifications and Transformation is possible. Accordingly, the spirit of the present invention should be understood only by the claims described below, and all equivalents or equivalent modifications thereof will fall within the scope of the spirit of the present invention.

100: housing
110: inlet
120: outlet
200: electrode cell unit
210: cover
220: electrode fixing part
220a: first fixing member
220b: second fixing member
221: insert
222a: bolt
222b : Nut
230: electrode plate
240: electrode base
242: turn
250: electrode spacer
300: sludge discharge unit
400: power supply

Claims (3)

a housing having a predetermined length so that the contaminated wastewater flowing into the lower portion is purified by electrochemical treatment and discharged to the upper portion, the housing having at least one open attachment/detachment port on the side thereof; and
An electrode cell unit capable of being fastened to the housing through the attachment and detachment hole and having an electrode plate for performing an electrochemical treatment
including,
The electrode cell unit is
cover;
a rectangular electrode fixing part coupled to the cover in a structure spaced apart along the length direction of the cover and having an insertion hole of a predetermined size;
an electrode plate detachable from the cover as one side is inserted into the insertion hole of the electrode fixing part;
As one side is inserted into the insertion hole of the electrode fixing part, the electrode base comes into contact with the side surface of the electrode plate.
Upflow electrochemical treatment apparatus comprising a.
delete According to claim 1,
The electrode fixing unit includes two fixing members that are separable based on the vertical direction, and the two fixing members have a 'C' shape, so that the insertion hole is formed when they are coupled to each other. chemical treatment equipment.

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