KR20050072723A - Apparatus for purificating the outflow water of abandoned mine and method for controlling thereof - Google Patents

Abstract

The present invention efficiently removes the various scales attached to the negative electrode plate of the electrolysis tank for electrochemical reaction of various contaminants contained in the abandoned mine shaft water, thereby improving the treatment efficiency of the electrolysis tank and extending the service life of the electrode, and the overall purification treatment. The present invention relates to a waste mine mine water purification treatment facility and a control method thereof that maximize efficiency and enable automatic unmanned operation.

The present invention further includes a control unit configured to organically control the operation of the electrolysis tank, the rectifier, the settling tank, the sludge PIT, the concentration tank, the dehydrator, and the filtration apparatus by detecting the concentration of the mine water and the state of the effluent in real time. A plurality of positive electrode plates and negative electrode plates are disposed in a case having an inlet and an outlet and spaced apart from each other so as to face each other. A plurality of scrapers are provided on the surface of each negative electrode plate so as to be rotatable in contact with each other. Is selectively rotated.

Description

Apparatus for purificating the outflow water of abandoned mine and method for controlling technique}

The present invention relates to a waste mine mine water purification facility for treating chromaticity, Fe, Al, Mn, heavy metal ions, etc., which are the main pollutants of the mine mine mine, by electrochemical reaction, and more specifically, various contaminants contained in the waste mine mine water. It is possible to efficiently remove various scales attached to the negative electrode plate of the electrolysis tank which electrochemically reacts to improve the treatment efficiency of the electrolysis tank and to extend the service life of the electrode, to maximize the overall purification treatment efficiency and to implement the automatic unmanned operation. The present invention relates to an abandoned mine water purification treatment facility and a control method thereof.

In general, a large amount of mine water is spilled into the abandoned mine, for example, a mining plant in Gangwon-do has a daily discharge of about 27,000 m 3 / day, indicating that the discharge is large.

Such waste mines are not limited to only one region, but in Korea, they are evenly distributed in Gangwon-do and Chungcheong-do, which are relatively rich in mineral resources, and wastewater containing harmful heavy metals such as lead and cadmium soaks in nearby rivers and soils. For example, the situation is causing environmental disaster.

Conventional methods for purifying the waste mine gangneum water were natural purification and chemical flocculation sedimentation.

The natural purification method is a method of physically precipitating suspended matter and some heavy metals by keeping the pit water in a large storage tank for a certain period of time, and the chemical coagulation sedimentation method by adding NaOH, Ca (OH) ₂ , Alum, etc. After the reaction, etc., a polymer is added to aggregate and precipitate.

However, in the case of the natural purification method, it is difficult to precipitate ions and colloidal minerals, and the disposal of the deposited sediment is very cumbersome. It is affected by, and occupies a large area, there was a problem that is not suitable to apply to the mines of narrow valleys.

In addition, the chemical flocculation sedimentation method is a chemical treatment method that was implemented in the 70's. The construction cost is low, the chemical consumption is high, and the secondary and tertiary pollution due to the chemical input and the consumption of the chemical are high. The amount of generated is also increased, so the disposal costs are high, resulting in a large amount of operating and labor costs.

Accordingly, the present applicant has been registered in Korea Patent Publication No. 10-341208 (name: cell surface electrochemical reaction flocculation precipitation apparatus and method thereof for removing contaminants in the waste mine mine water, hereinafter referred to as 'pre-registered patent') Has been presented.

The applicant's pre-registered patent is that when the gangsu water is passed through the electrolysis tank, the contaminants contained in the pit water are redox-reacted in the electrolysis tank to be converted into metal hydroxide or inorganic salt form, and the gangsu water undergoes an electrochemical reaction. After being converted into colloidal form, it is transferred to a precipitation tank, a concentration tank, a dehydrator, and the like to condense and separate contaminants contained therein and to be purified.

The electrolytic bath of the pre-registered patent has a structure in which a plurality of negative electrode plates and positive electrode plates are disposed at predetermined intervals, and a predetermined flow path is formed between each of the negative electrode plates and the positive electrode plates and the inner wall of the electrolysis tank, and the gang internal water passes between the negative electrode plate and the positive electrode plate. It is configured to perform a redox reaction.

On the other hand, the above-mentioned patent registration is a variety of cationic minerals (Ca, Mg, etc.) contained in the gangsu water directly attached to the negative electrode plate or the dentite oxide is attached to the negative electrode plate while the gangbang water passes through the negative electrode plate and the positive electrode plate in the electrolysis tank. That is, foreign matter, commonly referred to as scale, is fixed to the negative electrode plate.

As such, the scale attached to the negative electrode plate causes an increase in the operating voltage by disturbing the flow of current, and thus has a disadvantage in that the purification efficiency of the mine water is extremely reduced.

In addition, the removal of this scale has a disadvantage that the operator must be removed by hand one by one.

In addition, the pre-registered patent does not operate in conjunction with the electrolysis tank, rectifier, sedimentation tank, condenser, dehydrator, etc. organically, and each of the individual control and operation by the operator to perform a continuous automatic operation control of the purification of the mine water There was a drawback that there was a limit to the throughput.

The present invention has been made in view of the above, and it is possible to efficiently remove various scales attached to the negative electrode plate of the electrolysis tank for electrochemical reaction of various contaminants contained in the abandoned mine shaft water to improve the treatment efficiency of the electrolysis tank and The purpose of the present invention is to provide a waste mine mine water purification treatment facility and its control method which can extend the service life, maximize the overall purification treatment efficiency, and realize automatic unmanned operation.

The present invention for achieving the above object,

An electrolysis tank that electrolyzes contaminants contained in the water and converts the water into a colloidal state, a sedimentation tank that precipitates the colloidal water converted from the electrolysis tank and separates it into sludge and supernatant water; In a waste mine mine water treatment facility comprising a sludge PIT to be stored, a condenser for removing water from the sludge, a dehydrator for dewatering the concentrated sludge, and a filtration device for filtering and discharging the supernatant of the sedimentation tank.

The electrolysis tank includes electrode plates in which a plurality of positive electrode plates and negative electrode plates are disposed to face each other and are disposed to face each other in a case having an inlet and an outlet, and a plurality of scrapers are provided on the surface of each negative electrode plate so as to be rotatable in contact with each other. A plate and a scraper are selectively rotated, and a rectifier is connected to each of the negative plates and the positive plates to adjust the voltage and current strength of the supplied power;

It further comprises a control unit configured to organically control the signal system of the collection tank, electrolysis tank, rectifier, sedimentation tank, sludge PIT, condensing tank, dehydrator, filtration device by detecting the concentration of the incoming mine water and the state of the discharged water in real time. It is done.

Preferably, the control unit is a pump, an electrolysis tank, a rectifier, a polarity conversion unit, a sedimentation tank, a pump of the sludge PIT, a concentration tank, a pump of the concentration tank, a dehydrator, a power drive unit of the filtration device and other various sensors, lighting, alarm light, A motor control center (MCC) connected to an electrical instrument part such as a computer and the like to control the driving state thereof, and a central control unit connected to the power control unit to organically control and monitor the overall operation of the power control unit.

Alternatively, the power control unit and the central control unit are connected to transmit and receive in a wired or wireless manner.

Preferably, the electrolysis tank is installed in the case so that the shaft is rotatable in the vertical direction, the plurality of negative electrode plates are fixedly spaced apart a predetermined interval inside the case, a plurality of positive electrode plates disposed between the plurality of negative electrode plates It is fixed to the side, characterized in that a plurality of scrapers are fixed to the outer peripheral surface of the shaft is configured to rotate in contact with the surface of each negative plate.

Preferably, the electrolysis tank is installed in the case so that the shaft is rotatable in the horizontal direction, a plurality of positive and negative plates are fixed to the outer peripheral surface of the shaft spaced at a predetermined interval, a plurality of surfaces on each negative electrode plate It is characterized in that the scraper is disposed in rotational contact.

Preferably, the positive electrode plate and the negative electrode plate of the electrolytic bath are characterized in that the control by the control unit so that its polarity is periodically converted.

In the control method of the present invention, the gangsu water supply step of variably controlling the pump of the sump to supply an appropriate amount of gangsu water to the electrolysis tank, and controlling the rotation of the electrode plate power supply and the shaft of the electrolysis tank to electrochemical reaction Electrolysis tank control step to control the sedimentation tank, and sedimentation tank control step to control the coagulation and sedimentation operation of the sedimentation tank so that the supernatant water separated from the sedimentation tank is optimal, and the sludge PIT, condenser, dehydrator, filtration And other control steps to properly control devices, other electrical instrumentation parts, and the like.

Preferably, the electrolysis tank control step variably controls the intensity of the voltage and current of the power source supplied to the electrode plate according to the inflow amount and the concentration of the mine water flowing into the electrolysis tank.

Preferably, the method further includes an electrode plate polarity converting step for variably converting the polarity of the positive electrode plate and the negative electrode plate according to the degree of generation of the scale formed on the negative electrode plate of the electrolysis tank between the electrolysis tank control step and the precipitation tank control step.

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

As shown in FIG. 1, the mine water waste mine purification treatment facility of the present invention has a water tank 70 temporarily stored in the mine water, and an electrolysis tank 10 for electrolyzing contaminants contained in the water to convert the mine water into a colloidal state. And, a sedimentation tank 20 for precipitating the colloidal gangster water converted in the electrolysis tank 10, a sludge PIT 30 for temporarily storing the sludge deposited in the sedimentation tank 20, and a concentration tank for removing water from the sludge. 40, a dehydrator 50 for dewatering the concentrated sludge, a filtration device 60 for filtering and discharging the supernatant of the sedimentation tank, and the concentration of the incoming mine water and the state of the effluent in real time to detect the wastewater mine mines. And a controller 100 for organically and automatically controlling the purification treatment facility.

The collection tank 70 is a tank for collecting and temporarily storing the internal water discharged from the abandoned mine, and is designed to appropriately cope with the discharge of the internal water.

The electrolysis tank 10 is configured to electrolyze contaminants such as chromaticity, Fe, Al, Mn, heavy metal ions, etc. contained in the pit water pumped from the collecting tank 70 to convert the gang water into a colloidal state.

The electrolysis tank 10 is composed of a plurality of positive electrode plates and negative electrode plates facing each other inside the case having an inlet and an outlet, the electrolysis tank 10 is the size of the electrode, the gap and the size of the unit reactor It is composed of optimized cell type to maximize the processing efficiency.

In addition, a rectifier 11 is connected to the electrolysis tank 10, and the rectifier 11 is connected to the electrode plates (the cathode plate 14 and the anode plate 15) of the electrolysis tank 10, and It is configured to adjust the current strength and the like.

The settling tank 20 is formed in a cone shape, and is configured to separate into sludge and supernatant water by agglomerating and settling colloidal inorganic matters of the gangster water reacted in the electrolysis tank 10.

Here, the sludge is transferred to the sludge PIT 30 to be described later, and the supernatant water is discharged through the filtration device 60 described later.

The sludge PIT 30 is configured to temporarily store the sludge for pumping the pit water treated in the settling tank 20 to the concentration tank 40.

The concentration tank 40 is configured to primarily remove moisture from the sludge flocculated and precipitated in the settling tank 20.

The dehydrator 50 is configured to completely dewater the sludge from which the water is removed from the concentration tank 40 to be made into a cake form and discharged.

On the other hand, dehydration remaining after dehydration in the concentration tank and dehydrator (40, 50) is fed back to the settling tank 20 is repeated precipitation and dehydration process.

The filtration device 60 is configured to discharge the supernatant water of the sedimentation tank 20 to the outside after the final filtration treatment, and suitable specifications may be selected according to water quality standards and uses of the discharge water.

The control unit 100 is configured to detect the concentration of the inflow mine water and the state of the discharged water in real time to automatically control the entire mine wastewater mine purification treatment facility.

The control unit 100 is the pump of the above-mentioned sump tank 70, the electrolysis tank 10, the rectifier 11 of the electrolysis tank 10, the polarity conversion unit 130, the settling tank 20, sludge PIT (30) ), Power drive unit and other components (10, 20, 30, 40, 50, 60, 70) of pump, thickening tank 40, pump of thickening tank 40, dehydrator 50, filtration device 60, etc. Power control unit 120 (MCC; Motor Control Center) which is connected to various instrumentation devices such as sensors, lights, alarm lamps, computers, etc. provided on the side to control the driving state thereof, and is connected to the power control unit 120 (MCC) It consists of a central control unit 110 to control and monitor the entire operation of the power control unit 120 organically.

The control unit 100 controls to supply a predetermined amount of the internal water to the electrolysis tank 20 by variably driving the pump of the water collecting tank 70 after detecting the concentration of the internal water stored in the water collecting tank 70 and the water level of the internal water. By controlling the rectifier 11 in accordance with the change in the concentration of the internal water flowing into the electrolysis tank 10, by controlling the voltage and current of the power supplied to the electrode plate (14, 15) of the electrolysis tank 10, In addition to controlling to generate an optimum electrochemical reaction corresponding to the concentration of the control, and to control the variable conversion of the polarity of the electrode plate for descaling the electrolysis tank 10, the flocculation of the settling tank 20 and It is configured to optimally control the supernatant separated from the settling tank 20 by appropriately adjusting the settling operation.

Here, the central control unit 110 and the power control unit 120 may be connected in a wired manner, or may also be connected in a wireless manner.

As such, when the central control unit 110 and the power control unit 120 are connected in a wireless manner, it is possible to remotely monitor and control the operation state of the mine-purification treatment facility of the present invention.

On the other hand, the first embodiment of the electrolysis tank 10 to be applied to the waste mine mine water purification treatment facility of the present invention, as shown in Figure 2, the inner and outer cases 11 having inlets and outlets (11a, 12a) 12, a shaft 13 rotatably installed in the central portion of the inner case 11, a plurality of negative electrode plates 14 fixed to the inner wall surface of the inner case 11, and the inner case 11; A plurality of positive plates 15 fixed to the inner wall surface of the negative electrode plate 14 and disposed between the negative plate 14 and a plurality of scrapers 16 fixed to the outer circumferential surface of the shaft 13 to rotate in contact with the surface of the negative plate 14. Is done.

As shown in FIGS. 2 and 3, the negative electrode plate 14 and the positive electrode plate 15 are connected to power supply lines 14a and 15a made of a conductive material, such as copper, on both sides of the negative electrode plate 14 and the positive electrode plate 15, respectively. The positive electrode plate 15 is fixedly installed on the inner case 11 side by a predetermined interval through the spacer 17 of the insulator material.

As shown in FIG. 3, the shaft 13 is rotatably installed through the center portions of the negative electrode plate 14 and the positive electrode plate 15, and the outer circumferential surface of the shaft 13 and the negative electrode plate 14 and the positive electrode plate 15 are rotated. A space is formed therebetween, and the space is configured to flow through the space.

With this configuration, as the shaft 13 is driven to rotate by a drive motor (not shown), the plurality of scrapers 16 rotate in contact with the surface of the negative electrode plate 14 to attach various scales to the negative electrode plate 14. Will be removed.

In addition, the electrolysis tank 10 of the present embodiment generates a turbulent flow in the inner water 11 of the inner case 11 as the plurality of scrapers 16 are driven to rotate, thereby causing electrochemical reactions of various contaminants in the inner water. There is an advantage that can be promoted.

In addition, the second embodiment of the electrolysis tank 10 to be applied to the waste mine mine water purification treatment facility of the present invention, as shown in Figure 4, the inner and outer cases 11 having inlets and outlets (11a, 12a) 12, a shaft 18 rotatably installed in the inner case 11, a plurality of negative electrode plates and positive electrode plates 14 and 15 spaced apart and fixed to face the outer circumferential surface of the shaft 18, and It consists of a plurality of scrapers 19 fixed to the inner wall surface of the inner case 11 in contact with the surface of each negative electrode plate 14.

The negative electrode plates and the positive electrode plates 14 and 15 are fixedly spaced apart from each other on the outer circumferential surface of the shaft 18, and each of the negative electrode plates and the positive electrode plates 14 and 15 has a power supply line made of a conductive material such as copper on the inner side of the shaft 18. Is connected through.

The scraper 19 is fixed to the inner case 11 side in contact with the surface of each negative plate 14.

Meanwhile, as illustrated in FIG. 5, the negative electrode plate 14 has a cross section cut at an upper end thereof so as to be spaced apart from the upper end of the inner case 11 by a predetermined distance, and the positive plate 14 is symmetrical to the cut end surface of the negative electrode plate 14. The lower end of 15 has a cross section cut away from the lower end of the inner case 11 by a predetermined distance.

The cut sections of the negative electrode plates and the positive electrode plates 14 and 15 form spaced spaces between the upper and lower inner surfaces of the inner case 11, and the internal water flows through the spaced spaces.

With this configuration, as the shaft 18 is rotated by a drive motor (not shown), the negative plates and the positive plates 14 and 15 rotate integrally with the shaft 18, so that the plurality of scrapers 19 Various scales attached to the negative electrode plate 14 are removed by rotating contact with the surface of the negative electrode plate 14.

In addition, in the electrolysis tank 10 of the present embodiment, as the negative electrode plates and the positive electrode plates 14 and 15 are rotated and driven, the turbulent water is generated in the inner shaft 11 and the turbulent water flows to generate electricity of various contaminants in the inner shaft water. There is an advantage that can accelerate the chemical reaction.

Meanwhile, a polarity conversion unit 130 is further provided between the negative electrode plates and the positive electrode plates 14 and 15 of the electrolysis tank 10 and the power control unit 120 to periodically change the polarity of the negative electrode plates and the positive electrode plates 14 and 15. Or it may be configured to periodically change the polarity of the negative electrode plate and the positive electrode plate (14, 15) by a program input to the power control unit 120 itself.

By the polarity converting configurations of the negative electrode plates and the positive electrode plates 14 and 15, when the polarities of the negative electrode plate 14 and the positive electrode plate 15 are mutually converted when the scale attached to the negative electrode plate 14 is firmly fixed, the negative electrode plate 14 ), The scale fixed to the s) is lifted in a soft state, so that removal by the scrapers 16 and 19 is easier.

6 is a view showing a control method of the waste mine mine water treatment plant of the present invention.

As shown, the control method of the waste mine mine water purification treatment facility of the present invention controls the pump of the water collecting tank (70) to supply the appropriate amount of internal water to the electrolysis tank (10) and the electrolysis water supply step (S1), and electrolysis Electrolysis tank control step (S2) for controlling the rotational driving of the electrode plate (14, 15) and the shaft (13, 18) of the tank (10) electrochemical reaction, and the electrode plate of the electrolysis tank (10) Electrode plate polarity conversion step (S3) for temporarily converting the polarity of the (14, 15), and the sedimentation tank control step of controlling the coagulation and sedimentation operation of the settling tank 20 so that the supernatant separated from the settling tank 20 is optimal (S4), and other control steps (S5) for appropriately controlling the sludge PIT, the concentration tank, the dehydrator, the filtration device, and other electrical instrument parts in accordance with the driving state of the electrolysis tank 10 and the settling tank 20.

The internal water supply step (S1) is a step of supplying the appropriate amount of internal water to the electrolysis tank 10 by controlling the pump of the collecting tank 70, the control unit 100 and the concentration of the internal water stored in the collecting tank 70 By detecting the level of the water in real time in a variable control of the pump of the sump tank 70 to ensure that the appropriate amount of the internal water into the electrolysis tank 10.

The electrolysis tank control step (S2) generates an optimal electrochemical reaction corresponding to the concentration of the mine water by variably controlling the voltage and current of the power supplied to the electrode plates 14, 15 of the electrolysis tank 10. It is controlled so as to control the rotational speed of the shaft (13, 18) to form turbulence in the inner case (11) of the electrolysis tank (10) to control to induce more optimal electrochemical reaction.

In the polarity conversion step S3 of the electrode plate, the polarity of the electrode plates 14 and 15 of the electrolytic bath 10 is periodically changed to lift the scale firmly fixed to the negative electrode plate 14 in a soft state, thereby allowing the scraper 16 to be lifted. , 19) to facilitate the removal.

Sedimentation tank control step (S4) maintains the optimum water separated from the sedimentation tank 20 by appropriately controlling the flocculation and sedimentation operation of the sedimentation tank (20).

Other control step (S5) is according to the driving state of the electrolysis tank 10 and the settling tank 20, sludge PIT 30, concentration tank 40, dehydrator 50, filtration device 60, other electrical instrument parts, etc. By appropriately controlling the water quality of the discharged water to maintain the optimum state.

According to the present invention, various cationic inorganic substances (Ca, Mg, etc.) contained in the mine shaft water are directly attached to the negative electrode plate 14 or are converted into dendrites and attached to the negative electrode plate 14, thereby forming the negative electrode plate 14. By removing the scale more effectively, there is an advantage that the treatment efficiency of the electrolysis tank can be improved and the service life of the electrode can be extended.

In addition, the present invention collection tank (70), electrolysis tank (10), rectifier (11), polarity conversion unit 130, settling tank (20), sludge PIT (30), concentration tank (40), dehydrator (50), The power control unit 120 connected to the filtration device 60 and the like and the central control unit 110 that controls and monitors the power control unit 120 monitor and control the concentration of the internal water and the quality of the discharged water in real time, thereby purifying the internal water. There is a feature that can implement automatic unattended operation of the equipment.

The present invention as described above, by effectively removing the various scales attached to the negative electrode plate of the electrolysis tank for electrochemical reaction of various contaminants contained in the mine mine mine water to improve the treatment efficiency of the electrolysis tank and to extend the service life of the electrode, etc. In addition, it has the effect of maximizing the overall purification treatment efficiency and enabling automatic unmanned operation.

In the above, the present invention has been illustrated and described with respect to certain preferred embodiments. However, the present invention is not limited only to the above-described embodiments, and those skilled in the art to which the present invention pertains may vary without departing from the spirit of the technical idea of the present invention described in the claims below. It may be changed.

1 is a schematic view showing a waste mine pit water treatment plant of the present invention.

Figure 2 is a side cross-sectional view showing an electrolysis tank according to the first embodiment of the present invention.

3 is a plan view of the positive electrode plate and the negative electrode plate shown along the arrow III of FIG.

Figure 4 is a side cross-sectional view showing an electrolysis tank according to a second embodiment of the present invention.

5 is a plan view of the positive electrode plate and the negative electrode plate shown along the arrow V of FIG.

6 is a flow chart showing a control method of the waste mine mine water treatment plant of the present invention.

Brief description of symbols for the main parts of the drawings

10: electrolysis tank 20: precipitation tank

30: sludge PIT 40: thickening tank

50: dehydrator 60: filtration device

70: sump tank 100: control unit

Claims (9)

An electrolysis tank that electrolyzes contaminants contained in the water and converts the water into a colloidal state, a sedimentation tank that precipitates the colloidal water converted from the electrolysis tank and separates it into sludge and supernatant water; In a waste mine mine water treatment facility comprising a sludge PIT to be stored, a condenser for removing water from the sludge, a dehydrator for dewatering the concentrated sludge, and a filtration device for filtering and discharging the supernatant of the sedimentation tank. The electrolysis tank includes electrode plates in which a plurality of positive electrode plates and negative electrode plates are disposed to face each other and are disposed to face each other in a case having an inlet and an outlet, and a plurality of scrapers are provided on the surface of each negative electrode plate so as to be rotatable in contact with each other. A plate and a scraper are selectively rotated, and a rectifier is connected to each of the negative plates and the positive plates to adjust the voltage and current strength of the supplied power; And a control unit configured to organically control signal systems such as a collection tank, an electrolysis tank, a rectifier, a sedimentation tank, a sludge PIT, a concentration tank, a dehydrator, and a filtration device by real-time detecting the concentration of the inflow mine water and the state of the discharged water. Waste mine mine water purification treatment plant. The method of claim 1, The control unit may include a pump, an electrolysis tank, a rectifier, a polarity conversion unit, a precipitation tank, a sludge PIT pump, a concentration tank, a pump of a concentration tank, a dehydrator, a power driving unit of a filtration device, and various other sensors, lighting, alarm lamps, computers, and the like. A closed mine, comprising: a power control unit (MCC; Motor Control Center) connected to an electrical instrument part for controlling the driving state thereof; and a central control unit connected to the power control unit for organically controlling and monitoring the entire operation of the power control unit. Mine water purification treatment facility. The method according to claim 1 or 2, And the power control unit and the central control unit are connected to transmit and receive in a wired or wireless manner. The method of claim 3, The electrolysis tank is installed in the case so that the shaft is rotatably installed in the vertical direction, the plurality of negative electrode plates are fixedly spaced apart at predetermined intervals inside the case, a plurality of positive electrode plates disposed between the plurality of negative electrode plates fixed to the case side And a plurality of scrapers fixed to an outer circumferential surface of the shaft and configured to rotate in contact with the surface of each negative electrode plate. The method of claim 3, The electrolysis tank is installed in the case so that the shaft is rotatable in the horizontal direction, a plurality of positive and negative plates are fixed to the outer peripheral surface of the shaft spaced at a predetermined interval, a plurality of scrapers rotate on the surface of each negative plate A waste mine purification treatment plant, characterized in that arranged in contact. The method according to claim 4 or 5, The anode and cathode plates of the electrolysis tank are controlled by the control unit so that their polarity is variably converted waste mine purification treatment facility. It relates to a method for controlling the waste mine purification treatment facility according to claim 1, A gangsu water supply step of variably controlling the pump of the sump to supply an appropriate amount of gangsu water to an electrolysis tank; An electrolysis tank control step of controlling the supply of the electrode plate of the electrolysis tank and the rotational drive of the shaft to electrochemically react the pit water; A sedimentation tank control step of controlling the coagulation and sedimentation operation of the sedimentation tank so that the supernatant separated from the sedimentation tank is optimal; Control method of the waste mine purification treatment facility, characterized in that consisting of the other control step for appropriately controlling the sludge PIT, concentrating tank, dehydrator, filtration device, and other electrical instrument parts according to the operating state of the electrolysis tank and sedimentation tank. The method of claim 7, wherein The control method of the electrolysis tank control method of the waste mine purification treatment facility, characterized in that for controlling the intensity of the voltage and current of the power supplied to the electrode plate in accordance with the inflow and concentration of the gangsu water flowing into the electrolysis tank. The method of claim 8, Between the electrolysis tank control step and the sedimentation tank control step, the waste mine purification further comprises an electrode plate polarity conversion step of varying the polarity of the positive electrode plate and the negative electrode plate in accordance with the degree of generation of the scale formed on the negative electrode plate of the electrolysis tank Control method of treatment facility.