WO2019112340A1 - Nondegradable sewage/wastewater preprocessing system - Google Patents

Abstract

Disclosed is a nondegradable sewage/wastewater preprocessing system. The present invention provides a nondegradable sewage/wastewater preprocessing system comprising: a solid/liquid separator for processing remnants, sediments, or floating materials of sewage/wastewater; and micromaterial filtering tank connected to the solid/liquid separator by a connection channel such that micromaterials can be filtered and refined. The solid/liquid separator comprises: a body having an entrance portion provided in one side portion thereof so as to introduce sewage/wastewater and having a first sludge discharge port provided in the bottom surface thereof so as to discharge precipitated sludge; a separating film member installed to extend from the center of the bottom portion of the body to the upper portion thereof such that the interior of the body is delimited into a first compartment and a second compartment; a movement channel formed near the upper portion of the separation film member such that treated water moves along the same; and an opening/closing cover portion positioned on the upper portion of the body, one side of the opening/closing cover portion being coupled to a hinge portion to be able to hinge/rotate such that the same can be opened/closed. The micromaterial filtering tank comprises: a housing having a second sludge discharge port provided in the lower portion thereof so as to discharge sludge; and a membrane unit installed inside the housing.

Description

Degradable wastewater treatment system

More particularly, the present invention relates to a waste water pre-treatment system, and more particularly, to a micro-substance filtration tank having a high-speed solid-liquid separator and a membrane unit, in which an electrolytic apparatus and an electro- The present invention relates to a detoxifying wastewater pretreatment system capable of efficiently purifying wastewater by combining the membrane unit and effectively using the filtration unit for a long time by effectively performing backwashing of the membrane unit.

Conventional waste and wastewater treatment methods have a disadvantage in that they require expert knowledge for maintenance due to complicated equipment and difficult operation, and maintenance costs such as power costs and labor costs are relatively high. In addition, the quality of treated water is not satisfactory.

Conventional wastewater treatment methods include contact oxidation, merged septic tanks, and high efficiency merged septic tanks. In the case of the contact oxidation method, the operation cost is high because the power consumption is relatively large and the high moisture content waste sludge is generated. In addition, the concentration of organic matter in the treated water is high and often does not satisfy the treatment water quality standard. In the case where the inflow of waste water and wastewater is irregular or the air is not introduced for 1 to 2 weeks, pin floc phenomenon occurs or microorganisms die The water quality of the treated water is deteriorated, and there is an inconvenience that the microorganism must be reused. In the case of the combined septic tank and the high-efficiency merged septic tank, there is an advantage that the contact oxidation method improved the sediment separation and flow adjustment function by integrating the glass-reinforced plastic (FRP) tank into a small size, And there is a disadvantage that the operation cost is high due to problems of power and noise, disposal of waste sludge, and the like.

[Prior Art Literature]

[Patent Literature]

(Patent Document 1) 1. Korean Patent No. 10-0882452 (Feb. 2, 2009)

(Patent Document 2) 2. Korean Patent No. 10-0974076 (July 29, 2010)

(Patent Document 3) 3. Korean Patent No. 10-0970797 (2010.07.09)

It is an object of the present invention to provide a micro-substance filtration tank having a high-speed solid-liquid separator and a membrane unit in parallel with an electrolytic device and an electrocoagulation device for more efficient treatment in a simple system configuration. Which is capable of effectively purifying wastewater by combining the wastewater and the waste water.

Another object of the present invention is to provide a degradable wastewater pre-treatment system that can effectively use a filtration device for a long time by effectively performing backwashing of a membrane unit.

In order to achieve the above object, the present invention provides an electrolytic wastewater pretreatment system according to the present invention, comprising: an electrocoagulant for electrochemically treating contaminants in wastewater; A solid-liquid separator for treating residues, sediments or suspended matters from the treated water pretreated from the electrolytic apparatus, and a solid-liquid separator connected to the solid- A waste water pre-treatment system comprising a micro-substance filtration tank capable of filtration and purification,

The solid-liquid separator includes a main body having an inlet portion for introducing wastewater into one side portion thereof and a first sludge discharge port for discharging the settling sludge on a bottom surface thereof; A separation membrane member extending from a center of the bottom of the main body to an upper portion thereof for partitioning the inside of the main body into a first compartment and a second compartment; A moving path formed on the upper side of the separation membrane member and through which the treated water moves; And an opening / closing lid which is located at an upper portion of the main body and which can be opened / closed by a hinge rotatably coupled to a hinge portion at one side,

The microfilter filtration tank comprises: a housing having a second sludge discharge port for discharging sludge at a lower portion thereof; And a membrane unit installed inside the housing.

And the opening / closing lid portion is installed to be inclined at an upper portion of the main body.

A sensing sensor for sensing opening / closing of the opening / closing lid is further provided at one end of the opening / closing lid,

The connection passage is further provided with a solenoid valve electrically connected to the detection sensor to limit the flow of the process water.

And a plurality of electromagnets for collecting sludge containing a metal component are further provided on the bottom surface of the housing.

The membrane unit may include: a water tank in which filtered water or washing water can be filled; An outlet for discharging the filtered water stored in the water tank or filling the water tank with washing water; A plurality of membrane flat membrane modules installed elongate from the top to the bottom of the water tank to filter the treated water; A support frame for supporting each of the membrane flat membrane modules; A first flow pipe installed to communicate with the water tank; A second flow pipe coupled to the support frame; And a plurality of acid pipes installed in the second flow pipe so as to face the membrane flat membrane module.

And the air diffusing pipe is formed in a venturi pipe structure.

Further comprising a vibrating member inside the second flow path tube for vibrating the membrane unit,

The vibration member may include: a bearing installed above and below the inner wall of the second flow pipe; A rotating shaft rotatably mounted on the bearing; And an eccentric rotation body integrally installed at the center of the rotation shaft.

In order to install the plurality of membrane flat membrane modules in a zigzag manner,

A first horizontal moving device installed adjacent to an upper side of the membrane flat membrane module to horizontally move the upper side of the membrane flat membrane module horizontally; A second horizontal moving device installed adjacent to a lower side of the membrane flat membrane module to horizontally move the lower side of the membrane flat membrane module horizontally; And a driving device interlocked with the first horizontal moving device and the second horizontal moving device to move the first horizontal moving device and the second horizontal moving device to the left and right, respectively.

The first horizontal movement device includes: an upper locating bar installed laterally on an upper side of each membrane flat membrane module; And an upper support rod for connecting the upper locating bars longitudinally from both sides,

The second horizontally moving device includes: a lower locating bar installed laterally on a lower side of each of the membrane flat membrane modules; And a lower support rod for connecting the lower locating bars longitudinally from both sides.

And the first horizontal moving device and the second horizontal moving device are set to be located at different positions from each other by the driving device.

The upper position movement bar and the lower position movement bar each have a pair of operation bar structures for inserting the membrane flat membrane module.

The upper position movement bar and the lower position movement bar each have one operation bar structure installed in contact with the membrane flat membrane module.

An electrocoagulation device for electrochemically treating contaminants in wastewater prior to the solid-liquid separator; And an electrolytic apparatus for decomposing and treating the pollutant by the oxidation and reduction reaction of the treated water treated with pollutants from the electrocoagulant,

The electrocoagulation device and the electrolytic device are each composed of two chambers in one unit.

According to the present invention, there is an effect that the wastewater can be efficiently purified by combining the treatment section in which the electrolytic apparatus and the electrocoagulation apparatus are arranged in parallel, and the micro-substance filtration tank equipped with the high-speed solid-liquid separator and the membrane unit.

According to the present invention, the floating sludge and the precipitated sludge are primarily removed through the solid-liquid separator, and the treated water containing the fine material is removed through the membrane unit and the electromagnet to effectively purify the wastewater. have.

According to the present invention, when the membrane unit of the microfluidic filtration tank is backwashed for the purpose of maintenance cleaning, the foreign matter adhering to the membrane can be easily cleaned through the operation of the air diffuser and the operation of the eccentric rotation body.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a non-degradable wastewater treatment system according to the present invention; FIG.

FIG. 2 is an enlarged view of the solid-liquid separator shown in FIG. 1; FIG.

FIG. 3 is an enlarged view showing an enlarged view of the micro-substance filtration tank in FIG.

Fig. 4 is a cross-sectional view showing another embodiment of the membrane unit used in the micro-substance filtration tank of Fig. 3;

[Description of Symbols]

10: water tank 11: entrance

13: diffuser 15: air flow

20: support frame 30: membrane unit

31: membrane flat membrane module 40: first horizontal moving device

41: upper locating bar 43: upper retaining rod

50: second horizontal moving device 51: lower position moving bar

53: lower support rod 100: solid-liquid separator

110: main body 111:

113: first sludge discharge port 120: separation membrane member

125: moving passage 130: opening / closing lid

135: Detection sensor 140: Solenoid valve

150: connection flow passage 200: micro-substance filtration tank

210: housing 220: electromagnet

250: Oscillating member 251:

253: bearing 255: eccentric rotation body

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an enlarged cross-sectional view of a non-degradable wastewater treatment system according to the present invention, FIG. 2 is an enlarged view of the solid-liquid separator in FIG. 1, and FIG. 3 is an enlarged view of the micro- .

As shown in FIGS. 1 to 3, the pre-treatment system of the present invention includes an electrocoagulant 400 for electrochemically treating contaminants in wastewater, a treatment for treating contaminants from the electrocoagulant 400 An electrolytic apparatus 500 for decomposing and treating contaminants by oxidation and reduction of water, a method for treating residues, sediments, or suspended matters from the pretreatment water from the electrocoagulant 400 and the electrolytic apparatus 500 And a micro-substance filtration tank 200 connected to the solid-liquid separator 100 and capable of filtering and purifying micro-substances.

The electrocoagulation device 400 and the electrolytic device 500 are pretreatment devices for filtering wastewater. The electrocoagulation reaction of the electrocoagulation device 400 is a method of treating contaminants by accelerating the precipitation of the ionic substance into a salt and the growth of floc by the exchange of electrons emitted from the electrode, ) Is a method of treating pollutants by decomposing various pollutants by oxidation and reduction reactions that occur when DC power is supplied to the wastewater.

The electrocoagulation device 400 includes a tank filled with raw wastewater and filled with water, an electrocoagulation control panel installed in the tank, and a power supply device for supplying power to the electrocoagulation control panel. The polarity of the power supplied from the power supply device can be automatically changed to the opposite polarity depending on the situation, and the aggregate can be formed or the aggregate can be separated and discharged.

The electrocoagulation apparatus 400 supplies DC power to the inside of the apparatus,

a) electrochemical reaction at the electrode surface

b) Formation of coagulation in liquid phase

c) It is possible to remove contaminants through processes such as sedimentation or removal by float after adsorption of soluble colloidal contaminants in the agglomerates.

The mixture produced in this process produces a naturally occurring electrocoagulant and the aluminum or iron oxide electrode is reused.

The main chemical reactions of the electrode

Al -> Al ³⁺ (aq) + 3 e ^- (anode)

3H ₂ O + 3 e ^- -> 3 / 2H ₂ + 3OH ^- (cathode)

If the anode potential is high enough, secondary reactions such as direct oxidation of organic compounds and chlorine ions present in the wastewater can occur.

2Cl ^- -> Cl ₂ + 2e ^-

The resulting chlorine can oxidize the organic compounds and acts as a powerful oxidizer that can promote electrode reactions. In addition, the cathode causes a chemical reaction at the high pH value by the hydroxide ion during hydrogen gas production.

^{_{2Al + 6H 2 O + 2OH -}} -> 2Al (OH) 4- + 3H 2

Al ^{3 +} (aq) and OH ^- ions produced by the above electrode reaction form various ions. ^{Al (OH) 2 +, Al} (OH) 2 +, Al 2 (OH) 2 4 +, Al (OH) 4 -, Al 6 (OH) 15 3 +, Al 7 (OH) 17 4 +, Al 8 (OH) ₂₀ ⁴⁺ , Al ₁₃ O ₄ (OH) ₂₄ ^{7 +} , Al ₁₃ (OH) ₃₄ ^{5 +} are finally converted to Al (OH) ₃ by the precipitation dynamics of the compound.

Ferrous ions generated by the electrical on the other hand, to form a variety of ions, depending on the range of pH with hydroxide and polymer type ion ^{FeOH 2 +, Fe (OH)} 2 +, Fe 2 (OH) 2 4 +, Fe (OH _{^{) 4 -, H 2 O (}} Fe) 2 +, Fe (H 2 O) 5 OH 2 +, H 2 O (Fe) 4 (OH) 2 +, Fe (H 2 O) 8 (OH) 2 4 + , And Fe ₂ (H ₂ O) ₆ (OH) ₄ ^{4 +} ㅇ ultimately convert to Fe (OH) ₃ .

In addition, the electrolytic apparatus 500 is provided with electrodes 510 and 520 for treating pollutants by electrolyzing the polluted-treatment-treated water from the electrocoagulation apparatus 400.

The electrolysis of the organic material is oxidized at the anode but the indirect oxidation by intermediate products such as hypochlorous acid produced by the direct oxidation which oxidizes the organic matter and the electrolysis of chlorine, Can be distinguished.

① direct oxidation

The organic material (R) reacts with hydroxide ions adsorbed on the oxidizing anode and decomposes into carbon dioxide, water or hydrogen ions.

_{R + MOx [OH] 2 →} CO 2 + zH + + ze- + MOx (MOx: anode)

② indirect oxidation

The electrochemical reaction of the organic material removed by indirect oxidation occurs simultaneously with anodic oxidation of chlorine during electrolysis and hypochlorous acid is formed on the electrode surface.

Organic substances in the water are reduced by hydrogen generated in the cathode, and oxidized pigments are easily reduced and become colorless.

The solid-liquid separator 100 and the micro-substance filtration tank 200 are connected to each other by a connection passage 150, and a solenoid valve 140 for opening and closing the passage is installed in the connection passage 150. The connection passage 150 is preferably connected to the lower end of the solid-liquid separator 100.

The solid-liquid separator 100 includes a main body 110 having an inlet portion 111 through which wastewater flows into the one side portion and a first sludge discharge port 113 through which bottom side a sedimentation sludge 70 is discharged do.

The main body 110 includes a separation membrane member 120 extending from the center of the bottom portion to the top thereof. The separation membrane member 120 is a partition wall structure necessary for solid-liquid separation. The interior of the body 110 is divided into a first compartment 161 and a second compartment 163. A moving passage 125 is formed on the upper side of the separation membrane member 120. The moving passage 125 is formed in the second compartment 163 with treated water primarily sludge- Can be moved.

On the upper portion of the main body 110, an opening / closing lid 130 is hingedly coupled to the hinge 133. The opening and closing lid 130 may be inclined to the main body 110. The rear wall of the main body 110 is disposed higher than the front wall so that the opening / As shown in FIG.

In addition, a sensing sensor 135 may be installed at one end of the opening / closing lid 130 to detect opening / closing of the opening / closing lid 130. The sensing sensor 135 is electrically connected to a solenoid valve 140 installed in the connection passage 150.

That is, when the sensing sensor 135 senses the opening of the opening / closing lid 130, the solenoid valve 140 is opened so that the treated water filled in the second compartment 163 flows into the connecting passage 150 To the microfilter filtration tank 200 via the second filter (not shown). On the contrary, when the detection sensor 135 senses the closing of the opening / closing lid 130, the solenoid valve 140 is closed to close the connecting flow channel 150. When the connection passage 150 is closed, the wastewater and process water are filled in the solid-liquid separator 100, and a high-pressure pressure is generated inside the main body 110 at the same time.

In such a situation, floating sludge 80 such as impurities floating in water in the wastewater filled in the first compartment 161 floats to the top, and such as debris or sediment sludge sinks to the bottom surface .

As a result, the floating sludge 80 pushes the opening / closing lid 130 and is discharged to the outside, and the settling sludge 70 can be discharged to the outside through the first sludge discharging opening 113.

Thus, in the solid-liquid separator 100, the floating sludge 80 and the settling sludge 70 can be primarily removed from the wastewater, and the fine material from which the large sludges have been removed is transferred to the micro-substance filtering tank 200 together with the treated water And then filtered to obtain purified water.

In addition, the microfilter filtration tank 200 includes a housing 210 having a second sludge discharge port 215 for discharging sludge thereunder. The second sludge outlet 215 is preferably formed in a funnel shape to facilitate discharge of the sludge.

A plurality of electromagnets 220 may be installed on the inclined bottom surface of the housing 210. The electromagnet 220 serves to collect sludge containing a metal component such as iron contained in the treated water. The metal-containing sludge collected in the electromagnet 220 may be discharged together with sludges desorbed from the membrane flat membrane module by removing magnetism during backwashing of the membrane flat membrane module.

As shown in FIG. 3, a membrane unit 30 is installed in the housing 210.

The membrane unit 30 includes a water tank 10 through which filtered water or washing water can be filled and an inlet 11 for discharging filtered water stored in the water tank 10 or filling the water tank 10 with washing water .

The membrane unit (30) of the present invention includes a plurality of membrane flat membrane modules (31) extended from the upper part to the lower part of the water tank (10).

That is, the lower portion of each membrane flat membrane module 31 is installed to be supported by a separate support frame.

A plurality of air diffusers 13 are installed on the lower side of the membrane flat membrane module 31. The air diffusers 13 are preferably installed adjacent to the lower side of the membrane flat membrane module 31. [ The air diffusing pipe 13 is installed in the second flow pipe 15 so that the air introduced from the outside can be blown into the membrane unit 30. The air thus blown can clean the membrane flat membrane module 31 and at the same time maintain the water dissolved oxygen amount of the water tank equipped with the water treatment device.

It is preferable that the air diffusing pipe 13 is formed of a venturi pipe structure 18 so that the water droplets can be ejected in the form of a fine bubble.

A plurality of vibration members 250 may be installed in the second flow pipe 282 provided with the air diffuser 13. The membrane unit 30 to which the second flow pipe 282 is connected is vibrated by causing the vibration member 250 to vibrate in the second flow pipe 282, The foreign substances adhered to the surface of the substrate can be easily dropped.

The vibration member 250 is installed inside the second flow pipe 282 and includes a bearing 253 installed above and below the inner wall of the second flow pipe 282, And an eccentric rotation body 255 integrally provided at the center of the rotation shaft.

Accordingly, when the backwash water is supplied, the eccentric rotation body 255 is rotated by the water pressure, and the rotation shaft 251 coupled thereto is rotated, and the vibration by the eccentric rotation body 255 is generated . Then, the second flow pipe 282 vibrates, and the membrane unit 30 to which the second flow pipe 282 is coupled vibrates.

The air diffuser 13 and the vibrating member 250 do not operate when the membrane unit 30 performs a normal purification and filtration operation and perform backwashing to remove foreign substances adhered to the membrane flat membrane module 31 And only when it is done.

That is, in order to backwash, the three-way valve 285 is opened to both sides and the backwash water is supplied to the first flow pipe 281 and the second flow pipe 282. The backwash water supplied to the first flow pipe 281 is supplied to the inside of the membrane flat membrane module 31 via the water tank 10 and passes through the micropores of the membrane module 31 to the microfluidic filtration tank 200, . The foreign matter adhering to the membrane flat membrane module 31 can be primarily removed by the action of the reverse water wash.

The circulating water supplied to the second flow pipe 282 is blown out in the form of fine bubbles through the air diffuser 13 to remove foreign substances and the vibrating member 250 is operated to move the membrane unit 30, So that foreign matter can be removed. The foreign substance can be removed secondarily through the acid pipe 13 and the vibration member 250.

4 is a cross-sectional view of a membrane unit according to another embodiment of the present invention.

As shown in FIG. 4, in order to zigzag bend the plurality of membrane flat membrane modules 31, a first horizontal moving device 40 is installed on the upper side of the membrane flat membrane module 31, And a second horizontal movement device 50 is installed on the lower side of the second horizontal movement device 31.

The first horizontally moving device 40 includes an upper locating bar 41 installed laterally on the upper side of each membrane flat membrane module 31 and a plurality of upper locating bars 41 extending in the longitudinal direction And an upper support rod 43 for connecting the upper support rod 43 and the upper support rod 43 to each other.

At this time, the upper locating bar 41 has a pair of operating bar structures, and the membrane flat membrane module 31 can be configured to be sandwiched between the pair of operating bars.

In this way, each of the plurality of membrane flat membrane modules 31 is positioned by the upper locating bar 41 into which they are inserted, and can take the same shape at the same time.

Similarly, the second horizontal movement device 50 includes a lower position movement bar 51 installed laterally on the lower side of each membrane flat membrane module 31, and a plurality of lower position movement bars 51 on both sides And a lower support rod 53 which is connected in a longitudinal direction.

At this time, the lower position shifting bar 51 has a pair of operating bar structures, and the membrane flat membrane module 31 may be configured to be sandwiched between the pair of operating bars.

In this way, each of the plurality of membrane flat membrane modules 31 is positioned by the lower locating bar 51 into which they are inserted, and can assume the same shape at the same time.

In this structure, the first horizontal moving device 40 and the second horizontal moving device 50 are connected to the driving device 23 and can translate, respectively. The first horizontal moving device 40 and the second horizontal moving device 50 It is preferable that the horizontal movement devices 50 are set to be located at mutually different positions.

That is, when the first horizontal moving device 40 pushes and places the membrane flat membrane module 31 by the driving device 23, the second horizontal moving device 50 is moved by the driving device 23 to the membrane flat membrane module 31 To be pulled and positioned.

In this way, the membrane flat membrane module 31 can finally be bent in a zigzag form.

It is also possible to reverse the position of the first horizontal moving device 40 and the second horizontal moving device 50 by operating the driving device 23 in reverse for effective cleaning of the membrane flat membrane module 31 .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (13)

An electrolytic apparatus for decomposing pollutants by oxidizing and reducing the treated water treated with pollutants from the electrocoagulant; and an electrolytic apparatus for electrolyzing the electrolytic water A solid-liquid separator for treating debris, sediment or suspended matter from the treated water pretreated from the apparatus, and a micro-substance filtration tank connected to the solid-liquid separator by the connection channel for filtration and purification of the micro-substance, As a result, The solid- A main body having an inlet portion through which wastewater flows into the one side portion and a first sludge discharge port through which bottomsurface sludge is discharged; A separation membrane member extending from a center of the bottom of the main body to an upper portion thereof for partitioning the inside of the main body into a first compartment and a second compartment; A moving path formed on the upper side of the separation membrane member and through which the treated water moves; And And an opening / closing lid which is located at an upper portion of the main body and which can be opened / closed by a hinge rotatably coupled to a hinge portion at one side, The micro- And a second sludge discharge port for discharging the sludge to a lower portion thereof; And And a membrane unit installed inside the housing. The method according to claim 1, Wherein the opening / closing lid is installed on an upper portion of the main body in an inclined manner. The method according to claim 1, A sensing sensor for sensing opening / closing of the opening / closing lid is further provided at one end of the opening / closing lid, Wherein the connection passage is further provided with a solenoid valve electrically connected to the detection sensor to limit the flow of the process water. The method according to claim 1, And a plurality of electromagnets for collecting sludge containing a metallic component are further provided on the bottom surface of the housing. The method according to claim 1, The membrane unit comprises: A water tank in which filtered water or washing water can be filled; An outlet for discharging the filtered water stored in the water tank or filling the water tank with washing water; A plurality of membrane flat membrane modules installed elongate from the top to the bottom of the water tank to filter the treated water; A support frame for supporting each of the membrane flat membrane modules; A first flow pipe installed to communicate with the water tank; A second flow pipe coupled to the support frame; And And a plurality of acid pipes installed in the second flow pipe so as to face the membrane flat membrane module. 6. The method of claim 5, Wherein the acid furnace is formed with a venturi pipe structure inside thereof. 6. The method of claim 5, Further comprising a vibrating member inside the second flow path tube for vibrating the membrane unit, The vibrating member A bearing installed above and below the inner wall of the second flow pipe; A rotating shaft rotatably mounted on the bearing; And And an eccentric rotation body integrally installed at the center of the rotary shaft. 6. The method of claim 5, In order to install the plurality of membrane flat membrane modules in a zigzag manner, A first horizontal moving device installed adjacent to an upper side of the membrane flat membrane module to horizontally move the upper side of the membrane flat membrane module horizontally; A second horizontal moving device installed adjacent to a lower side of the membrane flat membrane module to horizontally move the lower side of the membrane flat membrane module horizontally; And Further comprising a drive unit interlocked with the first horizontal movement unit and the second horizontal movement unit to move the first horizontal movement unit and the second horizontal movement unit to the left and right, respectively. 9. The method of claim 8, Wherein the first horizontal movement device comprises: An upper locating bar disposed transversely to an upper side of each membrane flat membrane module; And And an upper support rod for connecting the upper locating bars longitudinally from both sides, Wherein the second horizontal movement device comprises: A lower locating bar installed transversely below the respective membrane flat membrane modules; And And a lower support rod for connecting the lower locating bars longitudinally from both sides in a longitudinal direction. 10. The method of claim 9, Wherein the first horizontal moving device and the second horizontal moving device are set to be located at different positions by the driving device. 10. The method of claim 9, Wherein the upper locating bar and the lower locating bar each have a pair of operating bar structures for inserting the membrane flat membrane module. 10. The method of claim 9, Wherein the upper position movement bar and the lower position movement bar each have one operation bar structure installed in contact with the membrane flat membrane module. 13. The method according to any one of claims 1 to 12, Prior to the solid-liquid separator, An electrocoagulation device for electrochemically treating contaminants in wastewater; And And an electrolytic device for decomposing and treating the pollutant by the oxidation and reduction reaction of the treated water treated with pollutants from the electrocoagulation device, Wherein the electrocoagulation device and the electrolytic device are composed of two chambers in one unit.

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