KR19980032368A - Wastewater Recycling Water Purification System - Google Patents

Abstract

The present invention is a water purification system for recycling wastewater, in particular, by analyzing the wastewater discharged from the industrial site can be removed to high efficiency by removing unnecessary substances in the wastewater, and the installation area and installation space and low cost The present invention relates to a wastewater recycling water purification system configured to be required.

The wastewater recycling water purification system of the present invention includes an ion separation device (1) having three electrode rods (1a) installed so that cohesion and bonding strength of inorganic materials in the wastewater can be lost; A primary filtration cartrage device (2) for filtering sludge by a cylindrical strainer or strainer (2c) provided such that a space (2b) is formed between the wall (2a '); An ozone treatment device 3 installed with a suction device 3a, a dryer 3b, an ozone generator 3c, a check valve 3d, a venturi injector 3e, and a wastewater backflow prevention device 3f. ; A filter 4b through which the wastewater inlet pipe 4a penetrates is installed, and an oxygen supply device 4d to which the oxygen injection pipe 4c is connected is installed. An intermediate water collection tank 4 having 4f installed therein; A direct current type secondary filtration device 5 having a laser filter 5c provided with a filtering network 5b on the outside thereof; The wastewater inflow pipe 5'a and the washing water outflow pipe 5'b are connected to the laser filter 5c provided with the filtering network 5b, and the washing water inflow pipe 5'c and the wastewater outflow pipe 5'd A constant flow secondary filtration device 5 'having a filtering network 5'e installed at the bottom of each); The wastewater inlet pipe 6a and the washing water inlet pipe 6b having the filtering net 6c are installed at the lower part, the filler is filled therein, and the wastewater outlet pipe 6d is provided at the upper filtering net 6f. A first poly filtration device 6 having an end portion of the washing water outlet pipe 6e connected thereto; A wastewater inlet tube 7a, a wastewater outlet tube 7b, and a heating wire 7c, each of which has a plurality of fine flow holes 7a ', are provided inside a tank 7e filled with activated carbon 7d. A second poly filtration device 7 provided with 7f; It consists of a UV sterilizer and a final collection tank where the purified water is collected, and the waste water is passed through each order of electricity to obtain and finally recycle the purified water.

Description

Wastewater Recycling Water Purification System

1 is a wastewater treatment process of the wastewater recycling water purification system of the present invention,

2 is a schematic longitudinal sectional view of the ion separation device in the present invention,

3 is a schematic longitudinal sectional view of the primary filtration cartrage device in the present invention,

4 is an ozone treatment process in the present invention,

5 is a schematic front view of the venturi injector in the present invention,

6 is a schematic longitudinal sectional view of the intermediate sump in the present invention,

7 is a schematic longitudinal cross-sectional view of a direct current secondary filtration device in the present invention,

8 is a schematic longitudinal sectional view of the first poly filtration device in the present invention,

9 is a schematic longitudinal cross-sectional view of a second poly filtration device in the present invention,

10 is a schematic longitudinal cross-sectional view of the constant flow secondary filtration device in the present invention,

11 is a schematic cross-sectional view of the wastewater backflow prevention device in the present invention.

* Description of the symbols for the main parts of the drawings *

1: ion separator 1a: electrode

2: primary filtration cart laser device 2b: space part

2c: cylindrical strainer filter network 2e: washing water inlet pipe

2f: washing water outflow pipe 3: ozone treatment device

3a: suction device 3b: air dryer

3c: ozone generator 3d: check valve

3e: Venturi injector 3f: Wastewater backflow prevention device

3'f: first opening and closing part 3'fa: ball

3'fb: opening and closing rod 3f: second opening and closing part

3'f: third opening and closing portion 4: the intermediate collection tank

4d: oxygen supply device 4e: ventilation device

4f: Deodorization filter 5: DC type secondary filtration device

5 ': constant flow secondary filter 5c: laser filter

6: first poly filtration device 7: second poly filtration device

7c: heating wire 7d: activated carbon

7f: blower

[Technical Field]

The present invention is a water purification system for recycling wastewater, in particular, by analyzing the wastewater discharged from the industrial site can be removed at high efficiency by removing unnecessary substances in the wastewater can be recycled to the industrial site, occupy a small installation area and installation space and low cost The present invention relates to a wastewater recycling water purification system configured to take the cost of equipment.

[Background of invention]

In general, wastewater is a mixture where the water supply to a group is contaminated and discharged after being used for various purposes, and if it is not treated, it causes a serious pollution problem exceeding the natural environment capacity.

In particular, industrial wastewater is more problematic because, unlike domestic sewage, it may have several pollutants simultaneously depending on the type of industry.

In general, the industrial wastewater includes organics, chemicals and oils, pathogenic microorganisms, dissolved and suspended substances, colors, heavy metals and other inorganic contaminants.

Water pollution refers to a phenomenon in which contaminants introduced into nature accumulate in water, such as sedimentation, filtration, diffusion, dispersion, oxidation, and microbial decomposition.

Water pollution causes not only public health and welfare such as water supply, swimming pool, aquaculture, corrosion of various materials, but also property, health, and psychological hygiene. Waste water generated in various production processes must be discharged below the discharge limit. In order to save materials by reusing and recycling waste resources rather than discharging them into rivers, they have been steadily researching how to use them as toilet water, car wash water, and general purpose water.

The activated sludge process is used as an example of the treatment method of the industrial wastewater used conventionally.

In this method, the removal rate of biodegradable organic matter (hereinafter referred to as BOD) contained in industrial wastewater is high, 80 to 95%, while the processing time is long, the cost of equipment is expensive, and a large installation area and installation space. There is a problem that is required, and as another example, wastewater purification by an aeration method of supplying air into the wastewater to generate a lot of bubbles or an oxidation method of spraying the wastewater into the air to make air contact. The treatment method also requires a lot of places and spaces, the device is complicated, the equipment cost is expensive, there was a problem in the waste water treatment.

[Purpose of invention]

The present invention has been made to solve the problems of the conventional wastewater treatment, it is possible to remove toxic substances, suspended solids, solids, various heavy metals and various microorganisms from wastewater with high efficiency, and perform deodorization, decolorization with high efficiency The purpose is to provide a wastewater recycling water purification system.

[Summary of invention]

The wastewater recycling water purification system of the present invention includes an ion separation device having three electrodes installed therein so as to lose cohesion and binding strength of inorganic materials in the wastewater; A primary filtration cartrage device for filtering sludge by a strainer filter network; An ozone treatment device installed such that an air suction device, an air dryer, an ozone generator, a check valve, a venturi injector, and a wastewater backflow prevention device are interconnected; A middle water collecting tank having a filter through which the wastewater inlet pipe is penetrated, an oxygen supply device is installed, and a ventilation device and an odor removal filter are installed at the top; DC type secondary filtration device equipped with a laser filter installed on the outside, waste water inlet pipe, and wash water outlet pipe are connected to the laser filter, and the wash water inlet pipe and waste water outlet pipe each having a filter network installed at the bottom A constant flow secondary filtration device; A first poly filtration device filled with an anion exchange resin, a cation exchange resin and carbon and having a washing water inlet tube and a washing water outlet tube therein; A second poly filtration device in which a wastewater inlet pipe, a wastewater outlet pipe, and a heating wire formed with a plurality of fine circulation holes are installed inside a tank filled with activated carbon, and a tuyere is installed; It is characterized by consisting of an ultraviolet sterilizer and the final collection tank.

[Description of Specific Embodiment of the Invention]

1 is a view showing the process to supply purified water purified by performing the wastewater treatment according to the present invention, to lose the original cohesion and binding force of the inorganic matter in the wastewater introduced from the wastewater tank (A) Ion separation process (B) to prevent the formation of precipitates due to the combination of inorganic matters; A primary cartridgeage filtration process (C) for filtration of suspended solids and solids in the wastewater passing through the electro-ion separation process (B); Ozone generated by high pressure corona discharge is dissolved in the wastewater that passed through the first primary cartridgeage filtration process (C) and decomposes organic matter in the wastewater with strong oxidizing power of ozone to remove sterilization, discoloration, deodorization, BOD and COD. Processing (D); An intermediate collection process (E) for supplying odor and removing oxygen from the wastewater which has passed the electric ozone treatment process (D); A secondary filtration process (F) for filtering suspensions such as fine suspended matters and solids remaining in the wastewater which has passed through the intermediate water collecting process (E); A first poly filtration step (G) for removing cations and anions in the wastewater that have passed through the second electric filtration step (F) by an ion exchange method and an adsorption method; A second poly filtration process (H) for removing, deodorizing and decolorizing filtration of residual organic materials to recycle the wastewater that has passed through the first poly filtration process (G); Ultraviolet sterilization process (I) for sterilizing microorganisms in the wastewater passed through the second poly filtration process (H) by the emitted ultraviolet rays and collecting process for collecting purified water passing through the electric ultraviolet sterilization process (I) (J) It is composed of

2 to 11 is a system for showing an embodiment of the present invention, the electrode rod (1a) is coated in the enamel on three stainless steel is installed inside the tank (1b) in the waste water source tank (A) Ion separation in which dissolved minerals in the wastewater introduced into the upper wastewater inlet pipe (1c) are discharged through the wastewater outlet pipe (1d) in a state where sediment is prevented by losing the original cohesion and binding force by the electric field. Device 1; A strainer filter net 2c is provided so that an appropriate space portion 2b is formed between the wall 2a 'of the tank 2a, and a wastewater inlet pipe 2d, a washing water inlet pipe 2e, and a washing water outlet pipe are provided. (2f) is connected to the lid 2a of the tank 2a or the lower side of the tank 2a, and the wastewater outflow pipe 2g is provided to the lower part of the inside of the tank 2a, and the strainer filtering network 2c A primary filtration cartage device (2) for filtering the sludge which is allowed to flow out through the lower end of the wastewater outlet pipe (2g) after the wastewater is introduced through; Suction device 3a for sucking air or oxygen, dryer 3b for drying air or oxygen, ozone generator 3c, check valve 3d, venturi injector 3e and wastewater backflow prevention device 3f Electric wastewater backflow prevention device (3f) is an annular protrusion (3'fd) fixed to the inner circumferential surface of the pipe (3'fc) on the upper end and the lower side of the opening and closing rod (3'fb) is provided with a mouth (3'fa) at the bottom The circular cone is designed to be in close contact with the inverted cone-shaped opening piece (3'fe) and the annular protrusion (3'ff) fixed to the inner circumferential surface of the tube (3'fc). The first opening / closing portion 3'f, to which the hollow opening and closing piece 3'fg is fixed, and a spring 3'fh is provided between the opening and closing piece 3'fe and the opening and closing piece 3'fg. ; At the lower part of the opening / closing rod 3'fb, a conical opening and closing piece 3fb is provided, which is in close contact with the annular protrusion 3fa fixed to the inner circumferential surface of the tube 3'fc. A second opening / closing portion 3f in which a spring 3fd is installed between 3fb) and a circular hollow fixing piece 3fc fixed to the inner circumferential surface of the tube 3'fc; Conical opening and closing piece 3 'in which guide rod 3'fc is fixed between annular fixing piece 3'fa and circular hollow fixing piece 3'fb respectively fixed to inner circumferential surface of tube 3'fc. fd) is constituted by a wastewater backflow prevention device 3f having a third opening and closing portion 3'f provided with a spring 3fe, so that ozone generated by the ozone generator 3c is ozone of the venturi injector 3e. Ozone treatment device that dissolves ozone in wastewater flowing into inlet (3e ') and passes through venturi injector (3e) and decomposes organic matter by strong oxidizing power of ozone to remove sterilization, discoloration, deodorization, BOD and COD. 3) and; A filter 4b through which the wastewater inlet pipe 4a penetrates is installed at the center, and an oxygen supply device 4d connected to the oxygen injection pipe 4c is installed at the lower portion thereof, and a ventilation device 4e is disposed at the upper portion thereof. Deodorization filter (4f) is installed and the wastewater outflow pipe (4h) is installed at the bottom, the device for secondary filtration of wastewater passed through the intermediate water tank (4) for removing the odor of the introduced wastewater and oxygen As a direct current secondary filtration device (5) and a constant flow secondary filtration device (5 ') are installed separately, the tank filled with the media of sand, gravel, Anthracite, Ferrox (5a) is connected to a laser filter (5c) provided with a filtering network (5b) on the lower end in the lower end, a direct current secondary filter (5) or sand, etc. to filter fine suspended matter, solids and suspensions in the incoming wastewater Filter net 5b at the lower end in tank 5a filled with filter media Installed laser filter (5c) is installed, wastewater inlet pipe (5 'a), washing water outlet pipe (5' b) is connected to the laser filter (5c) is provided with a filter network (5b) on the outside, washing water inlet pipe A constant flow secondary filtration device 5 'having a filtering network 5'e provided at a lower end of 5'c and a wastewater outflow pipe 5'd; A filter net 6c is provided at the lower end of the wastewater inlet pipe 6a and the washing water inlet pipe 6b, respectively, and is filled with a mixture of anion exchange resin, cation exchange resin and carbon from the lower side, and the wastewater outlet pipe 6d at the top. And a first poly filtration device 6 installed at each end of the washing water outlet pipe 6e to remove suspended matter in the inflowed wastewater; The wastewater inlet pipe 7a, the wastewater outlet pipe 7b, and the three heating lines 7c, each of which has a plurality of fine circulation holes 7a ', are installed inside the tank 7e filled with the activated carbon 7d. A second poly filtration device (7) provided with a blower opening (7f) for injecting hot air to remove incinerated organic matter by drying and heating residual organic matter in the introduced wastewater, and deodorizing and decolorizing filtration; An ultraviolet sterilizer in the ultraviolet sterilization process (I) provided with a conventional ultraviolet lamp for sterilizing various microorganisms in the introduced wastewater; It consists of a final collection tank in the collecting process (J) where the purified water passing through the ultraviolet sterilizer is collected.

In the figure, reference numeral 7g is a fixed plate for fixing the wastewater inlet pipe 7a, the wastewater outlet pipe 7b, and the heating wire 7c, and 7h is a combustion exhaust pipe.

The operation and effects of the wastewater recycling water purification system of the present invention having such a configuration will be described in detail.

Wastewater source water introduced from the raw water collection tank (A) flows through the wastewater inlet pipe (1c) of the ion separator 1 and dissolved in the fluid by the electric field generated in the electrode (1a) 220V to 5,000 ~ 7,500V DC The loss of inherent cohesion and cohesion of water (inorganic matter) is prevented from the occurrence of sediment due to the binding of inorganic matter.

Therefore, after the inorganic material in the waste water is ionized and flowed out through the wastewater outlet pipe 1d, the primary filter cartridge device 2 is provided with the valves of the washing water inlet pipe 2e and the washing water outlet pipe 2f locked. Wastewater flows in through the wastewater inlet pipe 2d of) and enters into the space between the strainer strainer 2c and the wall 2a 'of the tank 2a, and enters the inside through the strainer strainer 2c. After the sludge in the wastewater is filtered and removed, the wastewater flows out through the wastewater outlet pipe 2g and then moves upward through the wastewater outlet pipe 2g.

On the other hand, the air or oxygen introduced by the air or oxygen suction device 3a is dried while passing through the dryer 3b, and the dried air or oxygen flows into the ozone generator 3c and is subjected to a corona discharge of 1 to 20,000 volts. Ozone is generated by the ozone and ozone inlet (3e ') formed at the center of the venturi injector (3e) through which the fluid passing through the primary filter cartridge device (2) passes through the check valve (3d). Ozone flows into the waste water in the venturi injector (3e), and the ozone flows through the open / close piece (3'fe) opened by the ozone pressure after passing through the check valve (3d). As it moves, the opening / closing piece 3'fe moves downward, and the flow path of the pipe 3'fc passing into the wastewater backflow prevention device 3f is blocked.

Therefore, when ozone flows into the pipe 3'fc connected to the venturi injector 3e, the opening and closing piece 3'fd moves to the right side and opens due to the pressure of the ozone.

As ozone flows into the ozone inlet (3e '), ozone is inhaled and dissolved in the wastewater by the water pressure of the wastewater passing through the inside of the venturi injector (3e), and the organic matter in the wastewater is disinfected and discolored by the strong oxidizing power of ozone. Deodorization, BOD and COD will be removed.

If the wastewater flowing in the venturi injector 3e flows back to the tube 3'fc through which ozone passes, the opening / closing piece 3'fd moves to the left side to the annular fixing piece 3'fa. Although it is in close contact with each other, it may leak due to component error. In this case, as in FIG. 11, the pressure of point C is lowered while the pressure of point A and point B is the same (the spring of point A and point B (3 'fh, 3'fe) installs a spring whose strength is lower than the C low point (3fd).) The backflowed wastewater enters the wastewater backflow prevention device (3f). As the opening and closing piece (3'fe) is raised to prevent the ozone flow path of the pipe (3'fc).

By adding ozone to the wastewater, it can oxidize various heavy metals in the wastewater and turn them into solids to remove various heavy metals, remove various coliforms, bacteria and viruses in the water, and remove toxic substances in the wastewater. As it is reduced to oxygen immediately after sterilization, dissolved oxygen in water is increased, and deodorization, decolorization, and washing are performed.

Wastewater passing through the venturi injector (3e) is introduced into the interior through the wastewater inlet pipe (4a) of the intermediate water tank (4a) and is discharged to the upper side and the discharged wastewater collides with the mesh plate (4g) formed with fine pores again, the lower side again The water is collected into the lower part through the filter 4b.

Therefore, oxygen injected through the oxygen injection pipe 4c from the outside through the oxygen supply device 4d on the lower side is supplied through the oxygen supply device 4d and dissolved while supplying oxygen to the collected wastewater.

The odor in the waste water is deodorized while passing through the upper ventilation device 4e and the odor removal filter 4f and discharged to the outside.

When the wastewater that has passed through the intermediate water collection tank 4 has a large amount of suspended solids, the secondary filtration device 5 of the direct current type may be used, and the wastewater is introduced through the wastewater inlet pipe 5d of the direct current secondary filtration device 5. After passing through the filter net (5b) formed at the bottom of the wastewater inlet pipe (5d), passes through the filter medium (such as sand filled in the tank 5a) through the filter net (5f) of the lower end, the laser filter ( It enters in 5c), and it flows out through the wastewater outflow pipe 5g, and suspensions, such as a fine suspended matter and solids, in a wastewater are filtered.

In addition, when there is little suspended matter in the wastewater, the secondary flow type secondary filtration device 5 'is used as shown in FIG. 10. In this case, the wastewater inlet pipe 5'a of the secondary flow type secondary filtration device 5' is used. Wastewater flows in through the laser filter (5c) and the filtering network (5b) in the lower end of the interior and then through the filter medium (5'e) and the filter medium (5'e) filled in the wastewater outflow pipe (5 'd) Outflow.

The fluid that has passed through the direct current secondary filtration device 5 or the constant flow secondary filtration device 5 'enters through the wastewater inlet pipe 6a of the first poly filtration device 6 and is installed at the lower end thereof. After passing through the filter net 6c and passing through the filter media in the order of anion exchange resin, cation exchange resin and carbon filled from the lower side of the inside, cations and anions in the waste water are adsorbed and removed, and then passed through the upper filter net 6f. Then, it flows out through the wastewater outflow pipe 6d.

Ion exchange refers to the reaction of functional groups on the surface of exchange solids with electrostatic forces to exchange with other types of ions in solution, thus removing unwanted cations or anions from the wastewater.

A plurality of fine flows formed on the wall of the wastewater inlet pipe 7a by entering the wastewater inlet pipe 7a of the second polyfilter 7 so that the wastewater that has passed through the first polyfilter 6 can be recycled. The activated carbon 7d, which is filled inside by the heating wire 7c and the hot air by the blower 7f, is heated and burned through the ball 7a 'by entering and passing through the interior filled with the activated carbon 7d. Thus, the non-ionic components in the waste water, that is, residual organic matter, are dried or burned to be incinerated and removed. In addition, the waste water which goes down while deodorizing and decolorizing is discharged through the waste water outlet pipe 7b.

The activated carbon 7d in the tank 7e can be reused by heating and incineration of organic matter, and only the activated carbon 7d corresponding to the evaporated content needs to be replenished in the tank 7e.

The fluid that has passed through the second poly filtration device 7 passes through the space around the ultraviolet lamp of the conventional ultraviolet sterilizer and is important for various microorganisms by the ultraviolet rays emitted from the ultraviolet lamp (the sterilizing wavelength is 1800-2800 kHz). Ultraviolet energy is absorbed by the proteins and nucleic acids that are members to prevent the destruction or proliferation of DNA of microorganisms, and the fluid passing through the UV sterilizer is introduced into the sump where the purified water is finally collected.

On the other hand, whenever the pressure gauge inside the tank (2a) is 6kg or more, the interior of the primary filtration cartragege device (2) should be washed to remove solids therein.In this case, the wastewater inlet pipe (2d) and the wastewater outlet pipe ( After closing the valve of 2g), if the valves of the washing water inlet pipe 2e and the washing water outlet pipe 2f are opened, the washing water is washed while the washing water is introduced through the washing water inlet pipe 2e.

Similarly, when washing the direct current secondary filter 5, the valves of the wastewater inlet pipe 5d and the wastewater outlet pipe 5g are closed, and the laser filter through the washing water inlet pipe 5h as shown in FIG. After entering into (5c) again through the filter net (5b) and the filter medium to move upwards through the upper filter net (5f) and washing water outflow pipe (5e) to wash the inside, a constant flow secondary filter When washing 5 ', the valves of the wastewater inlet pipe 5'a and the wastewater outlet pipe 5'd are closed and the wastewater enters the washing water inlet pipe 5'c as shown in FIG. After passing through the 5'e and the filter medium, it enters through the lower filter net 5b and the laser filter 5c and flows out to the washing water outlet pipe 5'b.

At this time, the washing should be done whenever the pressure inside the device becomes 6kg or more.In case of washing, the wastewater inlet pipe 5d (5'a) of the direct current or constant flow secondary filtration device (5) (5 ') or After the wastewater outlet pipe 5g (5'd) is locked, the inside of the apparatus can be backwashed and reused.

In order to wash the inside of the first poly filtration device 6, the waste water inlet pipe 6a and the waste water outlet pipe 6d are locked, and then the washing water inlet pipe 6b and the washing water outlet pipe 6e are opened. Washing is performed by introducing washing water.

At this time, the washing is performed whenever the internal pressure becomes 6 kg or more.

As described above, the present invention can remove suspended solids, various microorganisms, solids, and toxic substances from wastewater with high efficiency, and can perform deodorization and decolorization with high efficiency, and does not require large installation area and space, and wastewater. The time used for the treatment also has the effect of not requiring a long time.

Claims (6)

An ion separator 1 having three electrode rods 1a installed therein so as to lose cohesion and binding strength of the inorganic materials in the wastewater; A primary filtration cartrage device (2) for filtering sludge by a cylindrical strainer or strainer (2c) provided such that a space (2b) is formed between the wall (2a '); Air or oxygen suction device (3a), dryer (3b), ozone generator (3c), check valve (3d), venturi injector to remove sterilization, discoloration, deodorization, BOD and COD 3e) and an ozone treatment apparatus 3 installed so that the wastewater backflow prevention apparatus 3f is interconnected; In order to remove the odor of the introduced waste water and to supply oxygen, a filter 4b through which the wastewater inlet pipe 4a penetrates is installed, and an oxygen supply device 4d having an oxygen inlet pipe 4c connected thereto is provided. An intermediate collection tank 4 provided with an air vent device 4e and an odor removal filter 4f disposed thereon; A direct current type secondary filtration device (5) having a laser filter (5c) provided with a filtering network (5b) at the lower end portion so as to filter fine suspended matter, solid matter and suspended matter in the waste water; The wastewater inlet pipe 5'a and the washing water outlet pipe 5'b are connected to the laser filter 5c provided with the filtering network 5b on the outside, and the washing water inlet pipe 5'c and the wastewater outlet pipe 5 a secondary flow filtering system 5 'having a filtering network 5'e provided at the lower end of' d); The waste water inlet pipe 6a and the washing water inlet pipe 6b, which are provided with a filtration net 6c, are installed at the bottom to remove the suspension, and are filled with a mixture of anion exchange resin, cation exchange resin and carbon from the lower side. A first poly filtration device 6 having an end portion of a wastewater outlet pipe 6d and a washing water outlet pipe 6e connected to a filtering net 6f provided at an upper portion thereof; In order to heat and incinerate the residual organic matter in the wastewater, the wastewater inflow pipe 7a, the wastewater outlet pipe 7b, and the heating wire 7c, each of which has a plurality of fine flow holes 7a ', are filled with activated carbon 7d. A second poly filtration device (7) provided inside the tank (7e) and provided with a blower opening (7f); A wastewater recycling water purification system, consisting of an ultraviolet sterilizer and a final collection tank for collecting purified water, wherein wastewater is passed in accordance with each order of electricity to obtain and finally recycle purified water. The wastewater recycling water purification system according to claim 1, wherein the electrode rod (1a) is enamel coated on stainless steel. 2. The primary filtration cartrageage device (2) according to claim 1, wherein the wastewater inlet pipe (2d), the washing water inlet pipe (2e), and the washing water outlet pipe (2f) have a lid (2a) of the tank (2a) or a tank ( It is connected to the lower side of 2a), wastewater recycling water purification system, characterized in that the wastewater outflow pipe (2g) is installed to the lower part of the interior of the tank (2a). The wastewater backflow prevention device (3f) is an annular protrusion fixed to the inner circumferential surface of the pipe (3'fc) in the upper end and the lower side of the opening and closing rod (3'fb) is provided with a mouth (3'fa) at the lower end It is in close contact with the inverted cone-shaped opening piece 3'fe which is in close contact with the lower end of the 3'fd, and the annular protrusion 3'ff fixed to the inner circumferential surface of the pipe 3'fc. A first hollow opening and closing portion 3'fg, which is capable of being fixed, is provided, and a spring 3'fh is provided between the opening and closing piece 3'fe and the opening and closing piece 3'fg. (3'f); At the lower part of the opening / closing rod 3'fb, a conical opening and closing piece 3fb is provided, which is in close contact with the annular protrusion 3fa fixed to the inner circumferential surface of the tube 3'fc. A second opening / closing portion 3f in which a spring 3fd is installed between 3fb) and a circular hollow fixing piece 3fc fixed to the inner circumferential surface of the tube 3'fc; Conical opening and closing piece (3'fc) is fixed between the annular hollow fixing piece (3'fa) and the circular hollow fixing piece (3'fb) respectively fixed to the inner peripheral surface of the pipe (3'fc) (3 Waste water recycling water purification system, characterized in that the 'fd' consisting of a third opening and closing portion (3'f) installed by a spring (3fe). The direct current secondary filtration device (5) is provided with a filtering network (5f) at the lower ends of the wastewater inlet pipe (5d) and the washing water outlet pipe (5e), respectively, and the wastewater outlet pipe (5g) and the washing water. A wastewater recycling water purification system, characterized in that the outlet pipe (5h) is connected to the laser filter (5c). The wastewater recycling system according to claim 1, wherein the heating lines (7c) are provided in three lines.