KR100430150B1 - Barrel type electrolyzer for withdrawing valuable metal in waste water - Google Patents

Abstract

The present invention relates to a barrel-type electrolytic apparatus for recovering valuable metals in wastewater, the constitution of which is for wastewater storage for storing wastewater to be electrolyzed and for electrolysis by being obtained in the wastewater storage tank. An electrically rotating rotary barrel is installed at the time of power supply, and an outer electrode network having a plurality of through-holes through which waste water can be introduced into the outside and a barrel-type electrolytic cell having an inner electrode bar insulated from each other inside thereof. It is characterized by including the.

According to the apparatus of the present invention, since the barrel-type electrolytic cell is only supplied to the wastewater storage tank, only the power supply is required, and thus the operation is very simple, and the water supply type does not need to circulate the wastewater. It has a compact and lightweight structure, which is excellent in mobile workability, and by placing both electrodes in the form of a barrel, the contact area with the reactants is expanded, thereby maximizing electrolytic efficiency, so that valuable metals can be recovered and recovered in large quantities quickly. have.

Description

Barrel type electrolyzer for withdrawing valuable metals in wastewater

The present invention relates to a barrel-type electrolytic apparatus for recovering valuable metals in wastewater, and in particular, since the barrel-type electrolytic cell is only supplied to the wastewater storage tank, the power supply is very simple, and the intake type does not need to circulate the wastewater. Since no peripheral device is required, it is not restricted by space, and has a compact and lightweight structure, which is excellent in mobile workability, and by placing both electrodes in the form of a barrel, the contact area with the reactants is expanded, thus maximizing electrolytic efficiency. The present invention relates to a barrel-type electrolytic apparatus for recovering valuable metals in wastewater, which is capable of quickly separating and recovering large quantities of oil.

Recently, recycling of resources and environmental pollution have emerged as important issues. For example, recycling valuable metals from scraps of electronic parts including printed circuit boards used in various electronic products, waste catalysts from chemical plants, etc., or from plating factories or textile factories. Since wastewater from other factories and wastewater generated during photo development contain a large amount of heavy metals, the recycling of such wastewater and the efficient recovery of valuable metals worth recovering from the wastewater create value of waste resources and prevent environmental pollution. It is one of the issues that are very important at this level.

Conventional wastewater treatment methods that have been applied in the prior art, after crushing the waste resources are mainly leached with acid or alkali as a solvent, and recovering valuable metals by chemical precipitation or electrolysis.

The electrolysis method is partially used not only for the recovery of valuable metals or heavy metals contained in the wastewater, but also for the treatment and production of general inorganic or organic compounds, but the conventional electrolysis device takes a long time or has low efficiency. In addition, the device itself takes up a lot of space.

That is, the conventional electrolytic apparatus for electrolyzing the reactants in the wastewater to obtain the final product is the most common having a structure in which the parallel plate-like anode and cathode are alternately arranged in a rectangular electrolytic cell, in addition to the fluidized bed (fluidized) -bed type, packed-bed type, and rotating cylinder type electrolytic devices.

However, in the electrolytic apparatus using the electrode in the form of a parallel plate, since the mass movement depends only on the diffusion, it is possible to increase the mass transfer speed by forcibly convection the solution by agitation or gas injection, but it is limited to work at high current density. There was.

In particular, when the forced convection of the waste water has to be provided with a separate pump, the device is not only occupy a lot of space by making a large weight structure, there was a problem that the moving operation is difficult.

In addition, the electrolytic device in the form of a fluidized bed or a packed bed can increase the reaction rate by widening the electrode area, but there is a problem in that it is not technically aimed at a wide range of materials.

In addition, in the case of the rotary column type electrolytic apparatus, there is a disadvantage that the operation cannot be continuously performed since the operation itself is mainly a batch type.

The present invention has been made in order to solve the above problems, the object of the operation is very simple, because only the supply of the power supply after the barrel-type electrolytic cell in the wastewater storage tank is obtained, there is no need to circulate the wastewater It does not require space because it does not require peripheral devices. It has a compact and lightweight structure, which is excellent in mobile workability, and the electrodes are arranged in barrel form to maximize the electrolytic efficiency as the contact area with the reactants increases. The present invention provides a barrel-type electrolytic device for recovering valuable metals in wastewater, which enables rapid mass separation and recovery of metals.

The barrel-type electrolytic apparatus for recovering valuable metals in wastewater according to the present invention for achieving the above object includes a wastewater storage tank for storing wastewater to be electrolyzed and an electrolysis obtained from the wastewater storage tank. Rotating electrically rotating barrel is installed inside the wall frame and the outer electrode network has a plurality of through-holes through which wastewater can be introduced into the outside, and the inner electrode rods are insulated from each other inside. Characterized in that it comprises a type electrolyzer.

Here, a gear box driven when power is applied is installed on the barrel-type electrolytic cell, and a drive gear is mounted on a drive shaft exposed from the gear box, and a driven gear that rotates in engagement with the drive gear on one side of the rotary barrel. Is provided is preferably configured to rotate the rotary barrel while the driven gear is interlocked in accordance with the operation of the drive switch of the gearbox.

The rotating barrel further includes an inner electrode rod extending inwardly from one side end thereof, a cathode wire connected thereto, an outer electrode network covered on an outer circumference of the rotating barrel, and an outer electrode network insulated from the inner electrode rod. It is preferable to include a ring-shaped conducting wheel and a brush-type conducting table that allows the outer electrode network to be energized from an anode wire connected to one side thereof without contact when the conducting wheel rotates.

In addition, the brush-type current collector is fixed on the wall frame and the fixed shaft to which the anode wire is connected, and a pair of brush-shaped cylinders extending in the circumferential tangential direction of the conduction wheel, respectively, at a predetermined angle to the left and right from the fixed shaft. A stool, a brush formed at an end of the brush-type current collector and in sliding contact with the current-carrying wheel, attached to each of the brush-type current collectors, and a tension spring for pressing the brush-type current collector toward the current-carrying wheel; It is preferable to include a tension adjusting screw for adjusting the tension of the tension spring.

In addition, one side of the rotating barrel is preferably provided with a removable opening and closing cover for easy cleaning and recovery of the valuable metal electrodeposited on the surface of the inner electrode and the inner washing.

In addition, the predetermined position on both outer sides of the wall frame is provided with a hanger protruding in the horizontal direction is formed so that the hanger is caught around the opening of the waste water storage tank when the barrel-type electrolytic cell is obtained so that only the rotating barrel is submerged. .

1 is a perspective view of a barrel-type electrolytic cell before acquisition showing the overall configuration of a barrel-type electrolytic apparatus for valuable metal recovery treatment according to the present invention.

FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1 showing a combined state of a barrel type electrolytic apparatus for recovering valuable metals according to the present invention.

Figure 3 is a longitudinal cross-sectional view showing the intake and treatment state in the wastewater of the barrel-type electrolytic cell according to the present invention.

4 is a flow chart illustrating the treatment of a particular wastewater by the barrel type electrolytic apparatus of the present invention.

<Description of Symbols for Major Parts of Drawings>

10; Wastewater storage tank 11; Wastewater

110; Wall frame 111; Hanger

120; Gearbox 121; driving axle

122; Drive gear 123; Drive switch

124; Axis of rotation 125; Interlocking gear

130; Barrel type electrolyzer 131; Rotating barrel

131a; Positive wire 132; Outer electrode network

133; Opening and closing cover 133a; Through

134; Brushed current collector 134a; brush

134b; Fixed shaft 134c; Tension Spring

134d; Tension adjusting screw 135; Electric Wheel

136; Axis of rotation 137; Driven gear

138; Inner electrode 138a; Cathode Wire

140; Power supply unit

Hereinafter, a barrel type electrolytic apparatus for recovering valuable metals in wastewater according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3 illustrate the structure of a barrel type electrolytic apparatus for recovering valuable metals in wastewater according to the present invention, and FIG. 1 shows a barrel type electrolytic cell 130 showing the overall configuration of the barrel type electrolytic apparatus. 2 is a cross-sectional view taken along the line II-II of FIG. 1 showing the combined state of the barrel-type electrolytic apparatus, and FIG. 3 is a longitudinal sectional view showing the state of inflow and treatment of the wastewater 11 of the barrel-type electrolytic cell. Will be shown respectively.

The present invention provides a structure of a barrel-type electrolytic apparatus for rapidly and efficiently producing a desired end product (precious metal) under high current density by electrochemically oxidizing and reducing a reactant in waste water.

That is, the barrel-type electrolytic apparatus for valuable metal recovery treatment in wastewater according to the present invention is obtained in the wastewater storage tank 10 and the wastewater storage tank 10 to store the wastewater 11 to be electrolyzed, as shown in the drawing. In order to electrolysis by the electric power, the rotating barrel 131 is electrically rotatable when the power supply is provided in the wall frame 110, the lower end is open and a plurality of through-holes in which wastewater 11 can be introduced into the outside. The formed outer electrode network 132 and the inside thereof is insulated from each other to form a structure including a barrel-type electrolytic cell 130 is provided with an inner electrode rod 138.

A gear box 120 driven when power is applied is installed on the barrel-type electrolytic cell 130, and a drive gear 122 is mounted on the drive shaft 121 exposed from the gear box 130, and the rotating barrel A driven gear 137 is provided on one side rotation shaft 136 of 131 in engagement with the drive gear 122 to operate the driven gear 137 according to the operation of the drive switch 123 of the gearbox 120. Is configured to rotate the rotating barrel 131 while being interlocked.

In the present invention, the rotary barrel 131 between the drive gear 122 and the driven gear 137 via the interlocking gear 125 rotated about the rotating shaft 124 installed on the wall frame 110. It is possible to adjust the rotational speed ratio of. In addition, the drive switch 123 used a variable switch that can adjust the speed of the rotary barrel 131.

The rotating barrel 131 further includes an inner electrode bar 138 serving as a cathode extending inwardly from one end thereof, a cathode wire 138a connected thereto, and an outer electrode serving as an anode covered on the outer circumference of the rotating barrel 131. The mesh 132, the ring-shaped conducting wheel 135 connected to the outer electrode network 132 in an insulated state from the inner electrode rod 138, and the conducting wheel 135 contact without interference when the conducting wheel 135 rotates. The outer electrode network 132 is composed of a brush-type current collector 134 that allows the external electrode network 132 to be energized from the positive electrode wire 131a connected to one side.

At this time, the brush-type current collector 134 is fixed on the wall frame 110 and the fixed shaft 134b to which the positive wire 131a is connected, and forms a predetermined angle from the fixed shaft 134b to the left and right. A pair of brush-type current collectors 134 extending in the circumferential tangential direction of the current-carrying wheel 135 and brushes formed at the ends of the brush-type current collectors 134 and slidingly contacting the current-carrying wheel 135, respectively. 134a, a tension spring 134c attached to each brush-type current collector 134 to press the respective brush-type current collector 134 toward the current transfer wheel 135, and the tension spring 134c. A configuration including a tension adjusting screw (134d) for adjusting the tension is achieved.

In addition, one side of the rotating barrel 131 is provided with a removable opening and closing cover 133 so as to easily separate and recover valuable metals, such as copper, electrodeposited on the surface of the inner electrode and the inner electrode bar 138, A plurality of through holes 133a are formed on the entire surface of the opening and closing cover 133.

In addition, hangers 111 protruding and extending in a horizontal direction are provided at predetermined positions on both outer sides of the wall frame 110 so that the hangers around the opening of the wastewater storage tank 100 when the barrel-type electrolytic cell 130 is obtained. 111 is caught and is formed so that only the rotating barrel 131 is submerged.

As described above, in the present invention, the outer electrode network 132, which is one of two electrodes, is formed as a cathode to reduce resistance, and the other inner electrode rod 138 is a cathode, the surface of which is the cathode. The valuable metal is configured to be electrodeposited, and the electrode itself rotates at an arbitrary speed in the state obtained in the wastewater 11, thereby enabling an active electrolysis effect.

Herein, the materials of the electrodes 132 and 138 may be arbitrarily manufactured according to the reactant, and the electrodes 132 and 138 may be formed by changing the polarity of each other as the polarities of the power supplies are reversed. Reference numeral 140 in FIG. 3 corresponds to a power supply unit.

In addition, the inner electrode 138 is set as a cathode capable of electrodepositing valuable metals such as copper contained in the inflow wastewater 11, and thus, stainless steel can be easily detached and separated from the reduced valuable metals during electrolysis. It is preferable to produce with (SUS316).

In addition, it is preferable that the outer electrode network 132 is formed as an anode, and is formed of an insoluble electrode made of titanium, which is surface treated with a catalyst material so as not to cause deterioration of the outer electrode network 132 during electrolysis. This can significantly extend the life of the electrode.

2 and 3, the barrel-type electrolytic apparatus is obtained in the wastewater storage tank 10, and then a voltage is applied to the positive electrode and the negative electrode provided in the barrel-type electrolytic cell 130. By rapidly and smoothly reacting the wastewater 11 penetrated into the rotating barrel 131 while rotating at a speed of, the valuable metal is electrodeposited and separated on either electrode surface, and when the process is continued for a predetermined time, the wastewater ( 11) can be purified by electrolysis. When the wastewater 11 is gradually diluted to complete the reaction, the wastewater 11 can be separately extracted and reused as purified electrolyzed water.

On the other hand, Figure 4 is a flow chart illustrating a treatment process of the specific wastewater (electrolytic plating waste liquid) by the barrel-type electrolytic apparatus of the present invention.

As in the example shown in the drawing, first, the electrolytic plating waste solution is stored in the wastewater storage tank 10, and the inside of the cathode is immersed in the electrolytic plating waste solution by immersing and rotating the barrel-type electrolytic bath 130 of the present invention. Valuable metals such as copper may be electrodeposited and recovered on the surface of the electrode 138, and the reduced electrolytic water is gradually diluted when the above process is performed for a proper time to complete the reaction. It can be reused as a plating solution.

As described above, the barrel type electrolytic apparatus for recovering valuable metals in wastewater according to the present invention is obtained by simply supplying power after obtaining the barrel type electrolyzer in the wastewater storage tank, so that the operation is very simple and the wastewater does not need to be circulated. It does not require space because it does not require peripheral devices. It has a compact and lightweight structure, which is excellent in mobile workability, and the electrodes are arranged in barrel form to maximize the electrolytic efficiency as the contact area with the reactants increases. There is an effect that it is possible to quickly separate large quantities of metal recovered.

This was confirmed that through the recovery of the valuable metals under the same conditions with respect to the conventional plate-type electrolytic apparatus and the barrel-type electrolytic apparatus of the present invention, it was confirmed that the valuable metals can be recovered at almost twice the speed. It is possible to treat wastewater containing heavy metals twice or more with the same size device, which can significantly improve the electrolytic efficiency.

In addition, according to the device of the present invention, the material of each electrode can be improved to not deteriorate the electrode even after a certain operating time is cured, and the product life can be improved by forming one of them as an insoluble electrode. Since it is possible to assemble, there is an advantage in that the extraction of valuable metals electrodeposited on the electrode surface and the post-use cleaning are easy.

Although the present invention has been described with reference to the embodiments shown in the accompanying drawings, this may be regarded as exemplary, and those skilled in the art may conceive various modifications and equivalent embodiments therefrom. It should be understood that such equivalent embodiments are also included within the claims of the present invention. Therefore, the true scope of protection of the present invention should be determined only by the appended claims.

Claims (6)

A wastewater storage tank for storing wastewater to be electrolyzed; And An external electrode network having a plurality of through-holes through which a rotatable barrel which is electrically rotatable upon power supply is installed in a wall frame having an open lower end, and the waste water is introduced into the wastewater storage tank. And a barrel-type electrolytic cell having an inner electrode bar in an insulated state therebetween, and a barrel-type electrolytic device for recovering valuable metals in wastewater. The method of claim 1, The barrel-type electrolytic cell is equipped with a gear box driven when power is applied, and a drive gear is mounted on a drive shaft exposed from the gear box, and a driven gear is rotated in engagement with the drive gear on one rotation shaft of the rotary barrel. The barrel-type electrolytic apparatus for valuable metal recovery treatment in wastewater, characterized in that the rotating barrel is rotated while the driven gear is interlocked according to the operation of the drive switch of the gear box. The method of claim 1, The rotating barrel, An inner electrode rod extending inwardly from one end thereof and a cathode wire connected thereto, an outer electrode network covered by an outer circumference of the rotating barrel, and a ring-shaped conducting wheel connected to the outer electrode network insulated from the inner electrode rod; Barrel type for recovery of valuable metals in the wastewater, characterized in that it comprises a brush-type current collector that allows the outer electrode network to be energized from the anode wire connected to one side without interference when the current wheel rotates. Electrolytic device. The method of claim 3, wherein The brush type current collector, A fixed shaft fixed on the wall frame and to which the positive electrode wire is connected, a pair of brush-shaped current collectors extending in the circumferential tangential direction of the current-carrying wheel at a predetermined angle to the left and right from the fixed shaft, and the brush-type current collector A brush formed at an end and slidingly contacted with the energizing wheel, a tension spring attached to each brush type energizing band to press the brush type energizing band toward the energizing wheel, and for adjusting the tension of the tension spring Barrel type electrolytic device for recovery of valuable metals in wastewater, characterized in that it comprises a tension adjusting screw. The method of claim 3, wherein One side of the rotary barrel is a barrel-type electrolytic apparatus for valuable metal recovery in waste water, characterized in that the inner and outer cover is detachable opening and closing cover for easy recovery and recovery of the valuable metal electrodeposited on the surface of the inner electrode. The method of claim 1, A predetermined position on both outer sides of the wall frame is provided with a hanger protruding in a horizontal direction so that the hanger is hung around the opening of the wastewater storage tank when the barrel-type electrolytic cell is obtained so that only the rotating barrel is submerged. Barrel type electrolytic device for valuable metal recovery.