KR101912205B1 - electrolysis-electrodeposition bath for water treatment - Google Patents

electrolysis-electrodeposition bath for water treatment Download PDF

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KR101912205B1
KR101912205B1 KR1020150048249A KR20150048249A KR101912205B1 KR 101912205 B1 KR101912205 B1 KR 101912205B1 KR 1020150048249 A KR1020150048249 A KR 1020150048249A KR 20150048249 A KR20150048249 A KR 20150048249A KR 101912205 B1 KR101912205 B1 KR 101912205B1
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electrolytic
electrodeposition
body case
sodium hypochlorite
fluid
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KR1020150048249A
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KR20160119504A (en
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김휘호
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김휘호
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/24—Halogens or compounds thereof
    • C25B1/26—Chlorine; Compounds thereof

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  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Organic Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

The present invention relates to an electrolytic-electrodeposition bath for water treatment that improves the recovery rate of valuable metal contained in a fluid or the rate of sodium hypochlorite generation. An electrolytic-electrodeposition bath for electrolytic-electrodepositing a recyclable valuable metal from a fluid containing a metal to generate sodium hypochlorite by electrolytic-electrodeposition of ions in the water containing the recovered or salted water, And an electrolytic-electrodepositing space in which an inlet port through which the fluid is introduced and an outlet through which the fluid flows out from the other are formed, and recovery of valuable metal or sodium hypochlorite is generated, and an electrolytic cell in which the recovered valuable metal or sodium hypochlorite A plurality of positive electrodes formed at regular intervals while dividing the electrodeposition space in one direction, One of the electrodes adjacent to each other in the form of a plate between the anode and the cathode has a gap at a certain interval from the inner bottom surface of the body case and the other has a gap to prevent the electrolytic- And a plurality of cathodes which are fixed to an inner bottom surface of the body case and have a gap at a predetermined interval from the upper portion of the body case and have a smaller surface area than the respective anodes.

Description

Electrolysis-electrodeposition bath for water treatment "

TECHNICAL FIELD The present invention relates to an electrolytic-electrodeposition bath for water treatment, and more particularly, to an electrolytic-electrodeposition bath for water treatment, which improves recovery of valuable metals contained in an aqueous solution containing a plating waste solution, a cleaning solution used in plating process, a leaching solution of ore, The present invention relates to an electrolytic-electrodeposition bath for treatment of water, which is capable of sterilizing seawater, swimming pool water, ship ballast water and the like by generating sodium hypochlorite (NaOCl) by electrolytic reaction of water containing a salt component.

BACKGROUND ART In general, scrap of electronic parts including printed circuit boards (PCBs) used in various electronic products, recycling of valuable metals from spent catalysts, which are frequently found in chemical plants, and the like, Since a large amount of heavy metal is contained in the fluid in the factory and the photographic development fluid, the recycling of these fluids and the efficient recovery of the valuable metals recovered from the fluids are very important It is one of the issues that is being considered important.

As described above, the fluid containing the valuable metals such as platinum (Pt), palladium (Pd), rhodium (Rh), gold (Au), silver (Ag), copper A method of recovering valuable metals by using chemical precipitation or electrolysis has been used as a method for recovering the waste metal from the waste, by leaching the waste resource mainly using acid or alkali as a solvent.

On the other hand, seawater is used as thermal source, cooling water of nuclear power plant, and LNG vaporizer heat source. Seawater microorganisms and fish and shellfish, which are cooling water, are adhered to the cooling equipment to cause cooling efficiency and flow rate reduction.

Electrolytic facilities that produce sodium hypochlorite (NaOCl) have been used to treat microorganisms attaching to and growing fish and shellfish. The key to producing sodium hypochlorite (NaOCl) is electrolytic - electrodeposited, which consists of an anode and a cathode.

In this case, Cl 2 in the ions (Na, Cl, H, OH) produced by electrolysis of NaCl and H 2 O in the water by electrolysis reaction in the water is attached to the anode (electrodeposition) to generate chlorine (Cl 2 ) (Electrodeposition) to generate hydrogen gas (H +).

Here, Na, which is more reactive than Cl, exists in ionic state. The sodium hydroxide (NaOH) produced by the reaction with the OH adsorbed on the electrode produces NaOH, which reacts with chlorine (Cl 2 )

Figure 112015033363659-pat00001

The electrolytic - electrodeposition reaction produces NaOCl with strong oxidizing power (sterilization power) which disinfects (kills) organic matter such as microorganisms, fish and shellfish, bacteria and plankton.

The electrolysis method is partially used not only for recovery of valuable metals and heavy metals contained in fluids but also for processing and production of general inorganic compounds or organic compounds. However, the conventional electrolysis apparatus requires a long processing time or low efficiency And the apparatus itself occupies a lot of space.

On the other hand, as a fluid treatment method mainly used in plating companies, most of the treatment methods such as sludge formation by filling with chemicals, and so on, But also has a problem in that a great deal of cost is incurred in the treatment of chemical agents.

On the other hand, according to Korean Patent Laid-Open Publication No. 10-2009-0047677 (entitled "Method and apparatus for electrolytic recycling of noble metals"), a negative electrode and a positive electrode are arranged so as to cross each other and the negative electrode has a negative electrode However, the electrolytic sampling method of the noble metal is such that the aqueous solution discharged from the electrolytic solution storage tank passes through the cathode at a time, so that it is difficult to recover the noble metal and the current efficiency is lowered with the passage of time .

1 is a view showing an electrolytic-electrodeposition bath for water treatment in which a water containing a valuable metal is recovered or a water containing a salt component is electrodeposited and sterilized in a fluid containing a valuable metal according to the prior art, The cylindrical inner electrode plate 20 and the cylindrical outer electrode plate 30 are disposed at regular intervals in the cylindrical body case 10 having the first and the second outer electrode layers 13 and 13 formed thereon. The body case 10 has an inlet 11 and an outlet 12 through which the fluid flows.

According to this structure, power is supplied from an external power supply (not shown), and electricity flows to the inner and outer electrodes 20 and 30. At this time, the polarity of the internal electrode 20 and the external electrode 30 can be arbitrarily set, and one side is a (-) pole and the other side is a (+) pole.

Accordingly, in the fluid (solution) in the electrolytic cell, electrons are supplied from the power source at the negative electrode (-), and a covalent metal is attached to the negative electrode by an electrochemical reduction reaction in which cations are diffused to the electrode surface, .

However, in the conventional electrolytic cell having one negative electrode and one positive electrode structure, the specific surface area of the negative electrode is not wide, so that the area and time of contact of the fluid in the electrolytic bath with the negative electrode are shortened, which leads to efficient electrolytic- It is becoming an obstructive factor.

In addition, in the case of a fluid having a low concentration, that is, a fluid containing less than 10 ppm of a valuable metal, there is a problem that the specific surface area to be contacted is very small and the efficiency of the electrolytic-electrodeposition reaction and the deposition of the valuable metal is difficult.

In other words, since the reduction process occurs only on the surface of a single anode electrode, the reaction rate is limited and a plurality of electrolytic cells are required for mass production, and the electrolytic efficiency is significantly deteriorated over time.

On the other hand, in general, an electrode plate made of titanium (Ti) is used as an electrode. However, the titanium has an advantage that it does not dissolve in aqua regia to recover electrodeposited valuable metal. However, since the electrical conductivity is low, A metal or a combination thereof is plated.

In addition, when the size of the electrode is increased or the number of electrodes is increased in order to widen the specific surface area, the size of the electrolytic bath as a whole increases, and therefore the manufacturing cost and the maintenance burden have increased.

Accordingly, there is a need to develop an electrolytic-electrodeposition bath having a structure that widens the specific surface area in contact with the fluid, and can improve the generation of sodium hypochlorite (NaOCl) by recovery of valuable metals and electrolytic reaction of water containing seawater and seawater .

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method of manufacturing a lithium ion secondary battery which is capable of increasing the contact time of a fluid to a cathode or increasing the contact specific surface area of a cathode and an anode, (Electrolytic reduction) reaction efficiency of a valuable metal contained in a fluid including an electrolyte solution, an electrolyte solution, an electrolyte solution, an electrolyte solution, an immersion liquid, and the like, thereby quickly and accurately recovering the valuable metal contained in the fluid.

Further, the present invention increases the generation of sodium hypochlorite (NaOCl) by increasing the contact time of the fluid to the electrode or increasing the contact specific surface area of the cathode and the anode to increase the electrolytic-electrodeposition reaction efficiency of the water containing seawater and seawater The electrolytic-electrodeposition bath for water treatment has a further purpose.

In addition, the present invention can improve the lifetime of the electrode by increasing the surface area of the anode to be larger than the surface area of the cathode and bringing the current density of the anode to be lower than the current density of the cathode, and to improve the electrolytic- Another object is to provide an electrodeposition bath for water treatment.

In order to accomplish the above object, the electrolytic-electrodeposition bath for water treatment according to the present invention comprises a cathode and an anode electrode corresponding to each other and electrolytically dissolves a plating metal or a valuable metal which can be recycled from a fluid containing a valuable metal, An electrolytic-electrodeposition bath for electrolytic-electrodeposition in which water is recovered by electrodeposition to generate sodium hypochlorite by electrolytic-electrodeposition of ions in the water containing the recovered or salted water, and an inlet port through which the upper part is opened and a fluid flows into the one side and an outlet port through which the fluid flows to the other side An electrolytic-electrodepositing space in which the recovered valuable metal or the electrolytic-electrodeposited space in which sodium hypochlorite is generated is divided in one direction, and the electrolytic- A plurality of positive electrodes formed in a plate form between the positive and negative electrodes, And the other is fixed to the inner bottom surface of the main body case so as to block the electrolytic-electrodeposition space in which the valuable metal is recovered or sodium hypochlorite is generated, And a plurality of cathodes having gaps at intervals and having a surface area smaller than that of each of the anodes.

The electrolytic-electrodeposition bath for water treatment according to the present invention has the following effects.

First, the time for the fluid to contact with the negative electrode is lengthened, so that a fluid or water containing a gold waste liquid, a cleaning liquid used in the plating process, a leaching solution of ore, It is possible to maximize the electrolytic-electrodeposition (electrolytic reduction) reaction efficiency of the valuable metal or ions (Na, Cl, H, OH) and improve the recovery rate of the valuable metal and the generation rate of sodium chloride (NaCl).

Second, by increasing the surface area of the anode to be larger than the surface area of the cathode, the current density of the anode is made lower than the current density of the cathode, thereby improving the lifetime of the electrode and improving the electrolytic electrodeposition efficiency by preventing the overcurrent, The incidence of sodium chlorate (NaCl) can be improved.

Third, the electrolytic-electrodeposition efficiency of a valuable metal and sodium chloride (NaCl) can be improved by promoting the reduction reaction of a valuable metal (metal cation) by roughly or finely forming the roughness so that the surface of the negative electrode is not smooth.

Fourthly, by roughly or finely roughening the surface of the anode so that the surface of the cathode is not smooth, it promotes the reduction reaction of the valuable metal (metal cation) and ions (Na, Cl, H, OH) It is possible to improve electrolytic-electrodeposition efficiency of one water ion (Na, Cl, H, OH).

Fifth, the overvoltage of the electrolysis (reduction electrodeposition) reaction can be lowered by forming rough irregularities or metal foams on the surface of the negative electrode.

Sixth, the contact surface area of the fluid is increased, and the electrolytic - electrodeposition recovery rate of the valuable metal can be increased even in the low concentration of the valuable metal fluid.

Seventh, by connecting the positive electrode and the negative electrode separately from the left and right sides, the electrodeposition current is not uniformly distributed on a specific surface of the electrode, and the electrolytic-electrodeposition reaction of the positive electrode and the negative electrode is uniformly generated on the entire surface of the electrode, The recovery rate and the incidence of sodium hypochlorite (NaOCl) can be improved.

Eighth, it is possible to bring the recovery efficiency of the valuable metal and the incidence rate of sodium hypochlorite (NaOCl) at each cathode equally by bringing the current supply applied to the plurality of cathodes arranged between the inlet and the outlet at regular intervals differently.

1 is a side sectional view schematically showing an electrolytic-electrodeposition bath for water treatment according to the prior art
2 is a plan view schematically showing electrode arrangement of an electrolytic-electrodeposition bath for water treatment for recovering valuable metals and sodium hypochlorite according to the first embodiment of the present invention
FIG. 3 is a flow chart showing the flow of fluid in the electrolytic-electrodeposition bath for water treatment for recovering the valuable metal recovery of FIG. 2 and sodium hypochlorite
4 is a plan view schematically showing an electrode arrangement of an electrolytic-electrodeposition bath for water treatment for recovering valuable metals and sodium hypochlorite according to the second embodiment of the present invention
5 is a plan view schematically showing electrode arrangement of an electrolytic-electrodeposition bath for water treatment for recovering valuable metals and sodium hypochlorite according to the third embodiment of the present invention
Fig. 6 is a plan view showing the anode structure of Fig. 5

Hereinafter, an electrolytic-electrodeposition bath for recovering valuable metals and generating sodium hypochlorite according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

In addition, the same or corresponding components are denoted by the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. For convenience of explanation, the size and shape of each constituent member shown may be exaggerated or reduced have.

FIG. 2 is a plan view schematically showing an electrode arrangement of an electrolytic-electrodeposition bath for water treatment for recovering valuable metals and sodium hypochlorite according to the first embodiment of the present invention, FIG. 5 is a flow chart showing the flow of fluid in an electrolytic-electrodeposition bath for water treatment for generating sodium; FIG.

2, the electrolytic-electrodepositing bath 100 for recovering valuable metals and generating sodium hypochlorite according to the first embodiment of the present invention includes an anode 120 and a cathode 130, The electrolytic solution is used to electrodeposition the plating metal or the metal that can be recycled in the fluid containing the metal valence by electrodeposition to recover the metal oxide and generate sodium hypochlorite (NaOCl) from the water containing the salt (H 2 O) In an electrolytic-electrodeposition bath for sterilizing water, an inlet (111) for opening the upper part and a fluid inlet for one side and an outlet (112) for discharging the fluid to the other side are formed respectively and the recovery of the valuable metal or sodium hypochlorite And an electrolytic-electrodepositing space 113 in which the recovery of the valuable metal in the main body case 110 or sodium hypochlorite occurs is divided in the longitudinal direction, The surface has is disposed in a zigzag form iridium (IrO 2), and DSA (insoluble electrode), a plurality of mesh metallic mixture is coated (mesh), the anode of the network type 120 and the anode 120 and the cathode 120 One of the electrodes adjacent to the main body case 110 has a gap A at a certain interval from the bottom of the main body case 110 and the other has an electrolytic-electrodeposition space in which the recovered valuable metal or sodium hypochlorite is generated (B) at a certain interval from the upper part of the main body case 110 so as to block the main body case 113, and is formed in the form of a rough roughness or metal foam in a concavo-convex form on the surface of the plate And a plurality of cathodes (130).

Here, the wastewater flowing into the inlet 111 flows through the electrolytic-electrodepositing space 113 where a large number of the valuable metals are recovered or sodium hypochlorite is generated at a slow flow rate, and the rough surface roughness Metal metal is electrolytically-deposited on the cathode 130 in the form of a metal trough, and recovered or salted is electrolytically-electrodeposited to generate sodium hypochlorite and is discharged to the outside through the outlet 112.

The anode 120 is formed in a meshed shape to have a surface area larger than that of the cathode 130 so that the current density of the anode 120 is lower than the current density of the anode 130, And the overcurrent can be prevented, and the recovery rate of the valuable metal and the generation rate of sodium hypochlorite can be further increased.

The distance between the anode 120 and the cathode 130 may be the same or the distance between the anode 120 and the cathode 130 may be easily varied according to the design.

And the distance between the anode 120 and the cathode 130 can be adjusted according to the electrodeposition fluid type and the electrode current density.

The cathode 130 having a predetermined gap A on the bottom surface of the body case 110 is formed in the same size as the cathode 130 fixed to the bottom surface of the body case 110, Or a door (not shown) or a separate frame (not shown) which is made smaller than the cathode 130 fixed to the bottom surface of the body case 110 and can open and close the body case 110 Not shown).

That is, a horizontal frame (not shown) is provided to extend over the vertical frame with vertical frames (not shown) fixed on both sides of the upper portion of the body case 110, One side of the plurality of cathodes 130 having the gap A may be fixed to the horizontal frame.

The door is coupled to at least one side of the main body case 110 so that the main body case 110 is covered and the negative electrode 130 can be removed to recover the recovered valuable metal from the negative electrode 130 And is made of a transparent material to confirm the inside of the main body case 110.

Meanwhile, the door may be fastened to the upper surface of the main body case 110 in a sliding manner.

The cathode 130 is in contact with the inner bottom surface of the main body case 110 so as to be spaced apart from or spaced from the bottom surface of the main body case 110. The fluid introduced through the inlet port 111 of the main body case 110 It is possible to further improve the recovery rate of the valuable metal and the generation rate of sodium chlorate by increasing the contact time between the fluid and the cathode 130 by slowing the flow of the fluid.

On the other hand, the anode 120 having the meshed-mesh shape can further expand the specific surface area than the cathode 130 having a plate-like shape.

An inlet 111 of the main body case 110 is connected to an external inflow conduit (not shown) through which the fluid is transferred from the outside, and a fluid is forcedly introduced into the main body case 110 at one side of the external inflow conduit An external pump (not shown) is provided.

The positive electrode 120 and the negative electrode 130 are made of different metal materials. In order to prevent generation and corrosion of impurities when the valuable metal is recovered from aqua regia contained in the fluid, (IrO 2 ) and a DSA (insoluble electrode) metal mixture, and the cathode 130 is formed of a titanium material.

4 is a plan view showing a form of current applied to each electrode in an electrolytic-electrodeposition bath for water treatment for recovering valuable metals and sodium hypochlorite according to the second embodiment of the present invention.

As shown in FIG. 4, the electrolytic-electrodepositing bath for recovering valuable metals and generating sodium hypochlorite according to the second embodiment of the present invention has an anode 120 and a cathode 130 as compared with the first embodiment, (+) And (-) currents respectively applied to the left and right sides or the upper and lower sides are separately applied, the detailed description thereof will be omitted.

That is, since the rectifier DC current connection between the anode 120 and the cathode 130 is disconnected from the left and right sides of the body case 110, the electrolytic-electrodeposition current is uniformly supplied to a specific surface of the electrode without being concentrated The electrodeposition reaction in the electrolytic-electrodeposition space 113 where the recovering of the valuable metal between the anode 120 and the cathode 130 or the sodium hypochlorite (NaOCl) occurs uniformly on the entire surface of the electrode, The recovery rate and the incidence of sodium hypochlorite can be improved.

The positive and negative currents applied to the plurality of cathodes 130 increase the intensity by controlling the constant voltage and the constant current while flowing from the inlet 111 to the outlet 112 of the main body case 110 The recovery rate of the valuable metal and the generation rate of sodium hypochlorite can be equally obtained in the cathode 130 located at the inlet 111 and the outlet 112. [

That is, by increasing the negative (-) current applied to the cathode 130 closer to the outlet 112 of the body case 110 than the cathode 130 near the inlet 111 of the body case 110, The recovery rate of the valuable metal contained in the fluid introduced through the inlet port 111 or the rate of generation of sodium hypochlorite of the ions (Na, Cl, H, OH) contained in the fluid is included in the fluid discharged through the outlet port 112 (Na, Cl, H, OH) contained in the fluid and the rate of occurrence of sodium hypochlorite (NaOCl) in the fluid.

FIG. 5 is a plan view schematically showing an electrode arrangement of an electrolytic-electrodeposition bath for water treatment for recovering valuable metals and sodium hypochlorite according to a third embodiment of the present invention, and FIG. 6 is a plan view showing the anode structure of FIG. 5 .

As shown in FIGS. 5 and 6, the electrolytic-electrodeposition bath for recovering valuable metals and generating sodium hypochlorite according to the third embodiment of the present invention has the same advantages as those of the first embodiment, The anode 120 may be formed in a mesh net shape and the cathode 130 may be formed in the form of a plate so that the surface area of the anode 130 is larger than the surface of the cathode 130 Space) is formed on the surface of the substrate, thereby increasing the surface area, so a detailed description thereof will be omitted.

That is, the surface area of the anode 120 may be larger than the surface area of the cathode 130, and the surface area of the anode 120 may be optionally selected from among several methods, The surface area of the cathode 130 can be made wider.

As shown in FIG. 6, the electrolytic-electrodepositing bath for recovering valuable metals and generating sodium hypochlorite according to the third embodiment of the present invention is different from the electrolytic- The anode 120 and the cathode 130 may be configured to have a gap A and B at a predetermined interval between the bottom surface and the cathode 130 so as to slow the flow of the fluid flowing through the inlet 111 of the body case 110. [ The structure is the same as that of the main body case 110 except that a constant gap is formed between the upper surface or the lower surface of the main body case 110 to slow down the flow of the fluid.

As described above, the electrolytic-electrodepositing tank 100 for recovering valuable metals and generating sodium hypochlorite according to the first to third embodiments of the present invention can be used in the electrolytic- (Na, Cl, H, OH) contained in the water containing NaCl is efficiently electrolytically-electrodeposited to generate sodium hypochlorite (NaOCl) The flow of the fluid flowing through the inlet port 111 of the main body case 110 may be slowed to increase the contact time between the cathode 130 and the upper surface or the lower surface of the main body case 110, And the gaps (A, B) are formed at regular intervals in the lower part, so that the valuable metal can be efficiently electrolytically-deposited and recovered even in a fluid containing a small amount of valuable metal.

The present invention is also configured to efficiently generate sodium hypochlorite (NaOCl) by electrolytic-electrodeposition of ions (Na, Cl, H, OH) even in water containing a very small amount of NaCl.

The surface area of the anode 120 may be greater than the surface area of the cathode 130 or the current density applied to the plurality of cathodes 130 may be varied to determine the recovery rate of the valuable metal and the generation rate of NaOCl Can be further improved.

The anode 120 and the cathode 130 are formed in a plate structure that divides the electrolytic-electrodeposition space 113 in which the recovered valuable metal or sodium hypochlorite is generated in the body case 110 in the vertical direction, Such as nickel (Ni), copper (Cu), or iron (Fe), can be recovered from a high concentration fluid when the separator 130 has a plate structure.

The electrolytic process of the fluid is repeated a plurality of times by separating the electrolytic-electrodeposition space 113 where the cathode 130 is located between the anode 120 and the recovery of the valuable metal or the sodium hypochlorite occurs, The recovery rate and the incidence of sodium hypochlorite can be increased.

The fluid introduced into the inlet 111 of the body case 110 sequentially passes through the electrolytic-electrodeposition space 113 where a large number of the valuable metals are recovered or sodium hypochlorite is generated, Metal and sodium hypochlorite (NaOCl) are electro-deposited and recovered and generated.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention as defined by the appended claims and their equivalents.

100: electrolytic bath 110: body case
120: anode 130: cathode

Claims (11)

Electrolysis is carried out with electrodes of negative electrode and positive electrode so as to correspond to each other, electrolytic-electrodeposition of a recyclable valuable metal in a fluid containing a plating fluid or a valuable metal to electrolytically-electrodeposit ions recovered or contained in saline, An electrolytic-electrodepositing bath for water treatment,
An electrolytic-electrodepositing space in which an upper portion is opened and an inlet port through which a fluid flows into one side and an outlet port through which fluid flows out from the other side, respectively, and recovery of valuable metal or sodium hypochlorite is generated,
A plurality of positive electrodes formed at regular intervals while dividing the electrolytic-electrodeposition space in which the recovered valuable metal or sodium hypochlorite is generated in one direction,
One of the electrodes adjacent to each other in a plate form between the anode and the anode has a gap at a certain interval from the inner bottom surface of the body case and the other has an electrolytic-electrodeposition space in which the recovered valuable metal or sodium hypochlorite is generated And a plurality of cathodes that are spaced apart from the upper surface of the main body case by a predetermined distance and have a smaller surface area than the respective anodes,
(-) current applied to the plurality of cathodes is applied differently, and a negative current (-) applied to the cathode gradually increases in intensity as it goes from the inlet to the outlet of the main body case toward the outlet,
(+) And (-) currents applied to the positive and negative electrodes are applied to the electrolytic-electrodeposition bath for water treatment separately from the left and right sides. The electrolytic-electrodeposition bath for water treatment according to claim 1, wherein the anode and the cathode are made of different metals. The electrolytic-electrodeposition bath for water treatment according to claim 1, wherein the anode has a surface coated with a mixture of iridium (IrO 2 ) and a DSA (insoluble electrode) metal mixture, and the cathode is made of titanium. The electrolytic-electrodeposition bath for water treatment according to claim 1, wherein the anode and the cathode are configured to be adjustable in spacing from each other. delete delete delete delete The electrolytic-electrodeposition bath for water treatment according to claim 1, further comprising a door coupled to at least one side of an upper side of the main body case, the main body case being openable and closable. delete The electrolytic-electrodeposition bath for water treatment according to claim 1, wherein the negative electrode is a straight plate, and the surface of the negative electrode is formed in a rough roughness or a metal foam form in a concavo-convex form.
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