KR102057069B1 - Water treatment apparatus of electro-coagulation - Google Patents

Abstract

The present invention relates to an electrocoagulation water treatment apparatus, which electrolyzes wastewater and livestock wastewater (especially, concentrated water through a reverse osmosis process) to coagulate a colloidal material and a non-degradable material. According to the electrocoagulation water treatment apparatus of the present invention, reactors (RT; RT1, RT2...RTn) including an electrode plate (40) for electrocoagulation are stacked in a plurality of layers. The wastewater is supplied to the lowest reaction tank (RT1), and is ascended along the reactors (RT1, RT2...RTn) in which the wastewater is stacked. A coagulation reaction occurs by the electrode plate (40) disposed in each of the reactor (RT1, RT2...RTn) in a process of ascending the wastewater along the stacked reactors (RT1, RT2...RTn). Also, treated water from which aggregations are separated by the coagulation reaction is discharged to the outside through an overflow chamber (50) disposed at an upper portion of the uppermost reactor (RTn).

Description

Electrocoagulation Water Treatment System {WATER TREATMENT APPARATUS OF ELECTRO-COAGULATION}

The present invention relates to an electrocoagulation water treatment device which coagulates colloidal material and hardly decomposable material by electrolyzing wastewater and livestock wastewater (especially concentrated water that has undergone reverse osmosis), and more particularly, an electrode for electrocoagulation. The present invention relates to an electrocoagulation water treatment apparatus in which a reactor including a plate is laminated in a plurality of layers.

Korean Patent No. 10-0950729 (registered on March 25, 2010) introduces an "Operate treatment apparatus using electrocoagulation and precipitation."

The effluent treatment apparatus using the electrocoagulation and precipitation is configured by vertically arranging a plate-shaped electrode made of iron (Fe) or aluminum (Al) in the inside of the tank to generate hydroxyl complexes (hydroxy complexes) to produce hydroxyl complexes. An agglomeration reaction tank that acts as an impurity nucleus to aggregate the impurities; It is configured to vertically arrange the mesh-shaped electrodes made of an insoluble material in the interior of the tank, and comprises a precipitation reaction tank for depositing the remaining hydroxyl group complex and ferrous metal ions reacted with impurities in the agglomeration reaction tank.

However, in the wastewater treatment apparatus using the electrocoagulation and precipitation, the coagulation reaction tank and the precipitation reaction tank are formed in a single layer, respectively, and the time for passing the waste water through the coagulation reaction tank must be maintained for a sufficient time for the electrical reaction time of the wastewater. Therefore, there is a disadvantage that the amount of waste water treatment per unit time is small, so that it is difficult to commercialize, and because the precipitation reaction tank is disposed on the side of the aggregation reaction tank, the occupied area occupied by the reaction tank is too large.

In the Republic of Korea Patent Application Publication No. 10-2018-0102906 (published September 18, 2018) "electric coagulation device" is introduced.

The electrocoagulation apparatus includes a housing having an inner space of which an upper portion is opened; And an electrode unit disposed in the inner space and including a plurality of electrode plates for agglomerating contaminants contained in raw water supplied from the outside using an electrocoagulation principle, wherein the inner space includes a first inflow of the raw water. A chamber, a second chamber disposed at an upper side of the first chamber, in which the electrode unit is disposed, and a third chamber temporarily storing the treated water having completed the electrocoagulation reaction in the second chamber.

However, since the second chamber including the electrode plate is composed of a single layer (one stage), the electroaggregation unit has to maintain a long time for the waste water to pass through the second chamber for the electrical reaction time of the waste water. There is a small amount of wastewater treatment per hour, which is difficult to commercialize.

Therefore, an object of the present invention has a structure in which a reaction tank including an electrode plate for electroaggregation is laminated in a plurality of layers, and waste water is supplied to the lowermost reaction tank so that each reaction tank in the process of raising the waste water along the stacked reaction tanks. By causing the agglomeration reaction to occur by the electrode plate disposed in the chamber, treated water in which the agglomerates and the agglomerates are separated by the agglomeration reaction can be discharged to the outside through the overflow chamber, so that even if the waste water does not stay in any reactor, It can provide sufficient aggregation reaction time, and by varying the number of reaction tanks to be stacked according to the wastewater treatment amount per unit time, it is possible to segregate sludge from wastewater with optimum residence time according to the characteristics of wastewater to ensure stability and efficiency. And a commercially available, easy to assemble and disassemble electrocoagulation water treatment device To provide.

One example of the electrocoagulation water treatment apparatus according to the present invention for achieving the above object is a reaction tank including an electrode plate for electroaggregation is laminated in a plurality of layers, the waste water is supplied to the lowermost reaction tank, the waste water is stacked In the process of rising along the reaction tank, the waste water rises along the stacked reaction tank, agglomeration reaction occurs by the electrode plates disposed in each reaction tank, and the treated water in which the agglomerates and the agglomerates are separated by the agglomeration reaction of the uppermost reaction tank. It is characterized in that it is discharged to the outside through the overflow chamber disposed in the upper portion.

More detailed configuration of the electrocoagulation water treatment apparatus according to the present invention has four spiral pillars erected at the base, and the first nut is fastened to each spiral pillar, and the four first nuts are arranged at the same height, and the spiral The base support plate is fitted to the column, the corners of the base support plate are seated on the first nut, the second nut is fastened to each spiral column, and each second nut is pressed onto the base support plate seated on the first nut, The base support plate is mounted on the spiral column by the first and second nuts, the supply pipe is connected to the center of the base support plate, and the first reaction tank in the form of a square box is opened in the upper and lower portions of the base support plate. A positive electrode plate and a negative electrode plate are disposed in the interior, and a plurality of sacrificial electrodes are arranged at regular intervals between the positive electrode plate and the negative electrode plate. The third nut is fastened to the pillars respectively, the first supporting plate fitted to the spiral column is supported by the third nut, the first supporting plate is seated on the upper end of the first reactor, and the fourth nut is fastened to each spiral column, The fourth nut pressurizes the first support plate seated on the third nut, so that not only the first support plate is fixed by the fourth nut but also the first support plate is pressed tightly to the top of the first reactor, and the first support plate is pressed on the first support plate. 2 Reactors are seated, and in this way a plurality of reactors and support plates are stacked, and an overflow chamber is mounted on top of the four spiral posts, and the overflow chamber is seated on the support plate of the top reactor, thereby agglomerating by agglomeration reaction. The treated water in which the aggregated and aggregated matters are separated is filled into the overflow chamber through the support plate of the uppermost reaction tank, and the discharge pipe is connected to the overflow chamber, so that the aggregates and the aggregates are aggregated. It characterized in that the separated treated water is discharged through the discharge pipe.

In addition, in the electrocoagulation water treatment apparatus according to the present invention, the lowermost reaction tank is seated on the base support plate, one end of the supply pipe is connected to the base support plate, and the other end of the supply pipe is connected to the pump, and the waste water is connected to the pump by the first reaction tank through the supply pipe. The discharge pipe is connected to the overflow chamber, and the discharge pipe is connected to the separator, and the treated water in which the aggregate and the aggregate are separated by the agglomeration reaction is supplied from the overflow chamber to the separator.

The base support plate has a rectangular plate shape, a square groove is disposed in the center, a gasket for watertightness is disposed around the square groove, a supply hole is formed in the center of the bottom surface of the square groove, and a supply hole is connected to each corner. It is characterized in that the mounting hole is inserted into the spiral post is formed.

The reactor is made of an insulating material, is formed in the form of a rectangular box, the bottom and the top is compressed so as not to leak to the gasket disposed in the square groove of the support plate, the zigzag-shaped uneven portion is formed on the inner surface of the side plate, the uneven portion A positive electrode plate, a negative electrode plate, and a plurality of sacrificial electrodes are inserted into each other, and the plurality of sacrificial electrodes are arranged at regular intervals between the positive electrode plate and the negative electrode plate.

The positive electrode plate, the negative electrode plate and the sacrificial electrode are characterized in that any one of iron, aluminum, stainless, tungsten according to the properties of the waste water.

The overflow chamber is connected to the top of the lower chamber at the bottom of the upper chamber, a flange portion is formed at the bottom of the lower chamber, the flange portion is tightly coupled to the top support plate, the discharge hole is connected to the discharge pipe to the upper chamber And the discharge hole is disposed at a position distinct from the lower chamber.

As a result, the electrocoagulation water treatment apparatus according to the present invention has a stacking structure in which the reaction tank can provide sufficient agglomeration reaction time for the waste water, and by varying the number of reaction tanks stacked according to the waste water treatment amount per unit time, According to the properties, it is possible to separate the sludge from the waste water with the optimal residence time, which not only ensures stability and efficiency, but also can be commercialized, and easy to disassemble and disassemble.

1 is a perspective view showing an electrocoagulation water treatment apparatus according to the present invention
Figure 2 is a block diagram showing an electrocoagulation water treatment apparatus according to the present invention
3 is a cross-sectional view taken along line AA of FIG. 2 showing an electrocoagulation water treatment apparatus according to the present invention.
Figure 4 is a perspective view of the base support plate
5 is an exploded perspective view showing a reaction tank;
6 is a perspective view of an overflow chamber;

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

1 to 3, the electrocoagulation water treatment apparatus according to the present invention is a reaction tank (RT; RT1, RT2, ..... RTn) comprising an electrode plate for electrocoagulation (see FIG. 3) Waste water is supplied to the lowermost reaction tank, which is stacked in a plurality of layers, and the waste water rises along the stacked reaction tanks (RT1, RT2, ..... RTn) and the waste water is stacked. In the process of ascending along the RTn), the agglomeration reaction is generated by the electrode plates 40 disposed in the respective reaction tanks RT1, RT2 ..... RTn. The separated treated water is discharged to the outside through the overflow chamber 50 disposed above the uppermost reaction tank RTn.

In the electroaggregated water treatment apparatus according to the present invention configured as described above, wastewater is continuously supplied to the lowermost reaction tank (RT1), so that the wastewater is gradually increased along the stacked reaction tanks (RT1, RT2, .... RTn). In turn, it is supplied to the overflow chamber 50 disposed above the uppermost reaction tank RTn and discharged to the outside from the overflow chamber 50.

Here, when the waste water passes through each of the reaction tanks RT1 and RT2 ..... RTn stacked, a DC voltage is applied to the electrode plates 40 of the respective reaction tanks RT1 and RT2 ..... RTn. As a result, the particles contained in the waste water cause an agglomeration reaction, and the agglomerated aggregate and the treated water in which the agglomerates are separated by the agglomeration reaction are discharged to the outside through the overflow chamber 50.

The electrocoagulation water treatment apparatus according to the present invention as described above is a reaction tank (RT; RT1, RT2, ..... RTn) is laminated in a plurality of layers, the reaction tank (RT; RT1, RT2, ... RTn) is provided with the electrode plate 40, and the waste water is supplied to the bottom reaction tank RT1 by the pump 70, and then gradually rises to pass through each reaction tank, whereby the waste water remains in either reactor. Even if it is possible to provide a sufficient flocculation reaction time to the waste water, it is possible to continue supplying the waste water to the reaction tank, it is possible to ensure a sufficient waste water treatment per unit time, there is an advantage that can be commercialized.

The configuration of the electrocoagulation water treatment apparatus according to the present invention will be described in more detail with reference to FIGS. 1 to 3 again.

1 to 3 again, the electrocoagulation water treatment apparatus according to the present invention is a plurality of reactors (RT; RT1, RT2, ..... RTn) is stacked, four spirals on the base 10 The pillar 15 is erected, the first nut N1 is fastened to each of the spiral pillars 15, and the four first nuts N1 are arranged at the same height, and the base support plate is formed on the spiral pillar 15. (BSP) is fitted, the corner of the base support plate (BSP) is seated on the first nut (N1), the second nut (N2) is fastened to each of the spiral posts 15, respectively, each second nut (N2) ) Is pressed onto the base support plate (BSP) seated on the first nut (N1), the base support plate (BSP) is mounted to the spiral post (15) by the first and second nuts (N1, N2), the base support plate The supply pipe P1 is connected to the center of the BSP, and a first reaction tank RT1 of a rectangular box shape in which an upper part and a lower part are opened on the base support plate BSP is seated, and inside the first reaction tank RT1. A rudder electrode plate 41 (see FIG. 3) and a negative electrode plate 42 (see FIG. 3) are disposed, and a plurality of sacrificial electrodes 43 (see FIG. 3) between the positive electrode plate 41 and the negative electrode plate 42. ) Are arranged at regular intervals, the third nut (N3) is fastened to each of the spiral posts 15, and the first support plate (SP1) fitted to the spiral post (15) is supported by the third nut (N3) The first supporting plate SP1 is seated on the upper end of the first reactor RT1, and the fourth nut N4 is fastened to each spiral column 15, so that the fourth nut N4 is the third nut N3. By pressurizing the first support plate SP1 seated on the), not only the first support plate SP1 is fixed by the fourth nut N4, but also the first support plate SP1 is watertight on the upper end of the first reactor RT1. The second reaction tank RT2 is seated on the first supporting plate SP1, and the plurality of reaction tanks and the supporting plates are stacked in this manner, and the overflow chamber 5 is disposed on the tops of the four spiral pillars 15. 0) is mounted and the overflow chamber 50 is seated on the support plate SPn of the uppermost reaction tank RTn, whereby the aggregated aggregate and the treated water from which the aggregates are separated by the agglomeration reaction are supported on the support plate SPn of the upper reaction tank RTn. It is filled into the overflow chamber 50 through), and the discharge pipe (P2) is connected to the overflow chamber 50, the treated water from which the aggregates and the aggregates are separated is discharged through the discharge pipe (P2).

In addition, the supply pipe (P1) is connected to the pump 70, the waste water is supplied to the first reaction tank (RT1) through the supply pipe (P1) by the pump 70, the discharge pipe (P2) is the separator (60) And the flocculate and treated water are separated and discharged respectively.

The lowermost reaction tank RT1 is seated on the base support plate BSP, and one end of the supply pipe P1 is connected to the base support plate BSP.

A coagulant is put into the separator 60, and the fine particles contained in the treated water are further aggregated by the coagulant.

Referring to FIG. 4, the base support plate BSP has a rectangular plate shape, a square groove 21 is disposed in the center, a gasket 22 for watertightness is disposed around the square groove 21, and a square groove. In the center of the bottom surface 23 of 21, a supply hole 24 is connected to the supply pipe P1, and a mounting hole 25 into which the spiral column 15 is fitted is formed at each corner.

As a result, the lower end of the first reaction tank RT1 is squeezed to the gasket 22 arranged around the square groove 21, thereby the gap between the base support plate BSP and the first reaction tank RT1 by the gasket 22. Is watertight so as not to leak.

Referring to FIG. 5, the first support plate SP1 is formed in a rectangular plate shape, a square hole 81 is formed in the center, and a gasket (not shown) for watertightness is formed around the square hole 81. Arrangement | positioning and the mounting hole 82 in which the spiral column 15 is fitted in each corner is formed.

Referring to FIG. 5, the reactor (RT) is made of an insulating material (eg, a plastic material), is formed in a rectangular box shape, and has a lower end and an upper end disposed in the square hole 81 of the support plate SP. It is compressed to a gasket (not shown), does not leak between the supporting plate SP, and zigzag-shaped uneven parts 33 and 34 are formed on the inner surfaces of the side plates 31 and 32, and the uneven parts 33 and 34 are formed. The positive electrode plate 41, the negative electrode plate 42, and the plurality of sacrificial electrodes 43 are inserted in the 34, and the plurality of sacrificial electrodes 43 are disposed between the positive electrode plate 41 and the negative electrode plate 42. Arranged at regular intervals.

The positive electrode plate 41, the negative electrode plate 42, and the sacrificial electrode 43 may be any one of aluminum, iron, stainless, and tungsten depending on the properties of the wastewater.

For reference, when the electrode plate is made of aluminum, a polymer hydroxide composite may be formed through the following reaction.

Anode Reaction

Al (solid) → Al3 ⁺ _(solution) + 3e ^-

<Cathode reaction>

3H ₂ O _{(liquid) + 3e- → (3/2) H} 2 ( _gas) + 3OH ^- _{(water solution)}

Overall reaction

Al _(solid) + 3H ₂ O _(liquid) → Al (OH) 3 _(solid) + (3/2) H _{2 (gas)}

In other words, an aluminum hydroxide precipitate is produced in the cell reaction. Such metal hydroxide precipitates have a very large contact area, and thus polymer hydroxide composites (sweep flocs) are formed by a so-called sieving phenomenon in which organic substances or colloids are adsorbed on the surface when precipitated.

In addition to the above-described aluminum, the electrocoagulation principle of iron, stainless steel, tungsten, and the like is also known, and thus a detailed description thereof will be omitted.

Referring to FIG. 6, the overflow chamber 50 has an upper end of the lower chamber 53 connected to the bottom surface 52 of the upper chamber 51, and a flange portion 54 at the lower end of the lower chamber 53. Is formed, the flange portion 54 is tightly coupled with the uppermost supporting plate (SPn), the discharge hole 55 is connected to the discharge pipe (P2) is connected to the upper chamber 51, the discharge hole 55 is lower It is disposed at a position distinct from the chamber 53.

The electrocoagulation water treatment apparatus according to the present invention as described above has a stacking structure in which a plurality of reaction tanks (RT; RT1, RT2, ..... RTn) are stacked, and the number of reaction tanks stacked according to the wastewater treatment amount per unit time. Alternatively, it is possible to secure the stability and efficiency by the sludge flocculation separation from the wastewater with the optimum residence time according to the characteristics of the wastewater, and each reactor (RT1, RT2, ... RTRT) has four spiral columns By having the structure laminated | stacked by the nut by (15), there exists an advantage of easy assembly disassembly.

RT1, RT2, ..... RTn: Reactor 40: Electrode plate
50: overflow chamber

Claims (7)

delete A plurality of reaction tanks (RT; RT1, RT2, ..... RTn) are stacked, and four spiral columns 15 are erected on the base 10, and a first nut is formed on each spiral column 15. (N1) is fastened respectively, four first nuts (N1) are arranged at the same height, the base support plate (BSP) is fitted to the spiral column 15, the corner of the base support plate (BSP) is the first nut (N1) ), The second nut (N2) is fastened to each of the spiral posts 15, and each of the second nut (N2) is pressed to the base support plate (BSP) seated on the first nut (N1) The base support plate (BSP) is mounted on the spiral column (15) by the first and second nuts (N1, N2), the supply pipe (P1) is connected to the center of the base support plate (BSP), the base support plate (BSP) The first reactor (RT1) in the form of a rectangular box, the upper and lower openings are mounted therein, the positive electrode plate (41) and the negative electrode plate (42) are disposed inside the first reactor (RT1), and the positive electrode plate. 41 and A plurality of sacrificial electrodes 43 are arranged at regular intervals between the negative electrode plates 42, and the third nuts N3 are respectively fastened to the respective spiral posts 15 and fitted into the spiral posts 15. The supporting plate SP1 is supported by the third nut N3, and the first supporting plate SP1 is seated on the upper end of the first reaction tank RT1, and the fourth nut N4 is fastened to each spiral column 15. Thus, the fourth nut N4 presses the first support plate SP1 seated on the third nut N3, so that the first support plate SP1 is not only fixed by the fourth nut N4, but also the first support plate SP1. (SP1) is pressed tightly to the upper end of the first reaction tank (RT1), the second reaction tank (RT2) is seated on the first support plate (SP1), a plurality of reaction tank and the support plate is laminated in this manner, four The overflow chamber 50 is mounted on the upper end of the spiral column 15, and the overflow chamber 50 is seated on the support plate SPn of the uppermost reaction tank RTn, whereby The treated water from which the collected aggregate and the aggregate are separated is filled into the overflow chamber 50 through the support plate SPn of the uppermost reaction tank RTn, and the discharge pipe P2 is connected to the overflow chamber 50, where the aggregate and the aggregate are aggregated. The separated treatment water is discharged through the discharge pipe (P2) characterized in that the electrocoagulation water treatment apparatus.
The method of claim 2,
The bottom reactor (RT1) is seated on the base support plate (BSP), one end of the supply pipe (P1) is connected to the base support plate (BSP), the other end of the supply pipe (P1) is connected to the pump 70, the waste water pump ( 70 is supplied to the first reaction tank (RT1) through the supply pipe (P1), the discharge pipe (P2) is connected to the overflow chamber 50, the discharge pipe (P2) is connected to the separator 60, the coagulation reaction By the treated water in which the aggregates and the aggregates are separated by the electrocoagulation water treatment apparatus, characterized in that to be supplied to the separator (60) from the overflow chamber (50).
The method of claim 3, wherein
The base support plate (BSP) is in the shape of a square plate, a square groove 21 is disposed in the center, a gasket 22 for watertightness is disposed around the square groove 21, the bottom surface of the square groove 21 (23) An electrocoagulation water treatment apparatus, characterized in that a supply hole (24) connected to a supply pipe (P1) is formed in the center, and a mounting hole (25) into which a spiral column (15) is fitted in each corner.
The method of claim 2,
The reactor (RT) is made of an insulating material, is formed in a rectangular box shape, the lower end and the upper end are compressed in a gasket disposed in the square hole 81 of the support plate (SP), the water leaks between the support plate (SP) In addition, zigzag-shaped uneven parts 33 and 34 are formed on the inner surfaces of the side plates 31 and 32, and a positive electrode plate 41, a negative electrode plate 42, and a plurality of uneven parts 33 and 34 are formed. The sacrificial electrode (43) is sandwiched between the positive electrode plate (41) and the negative electrode plate 42, the plurality of sacrificial electrodes (43) characterized in that arranged at a predetermined interval.
The method of claim 5, wherein
The positive electrode plate 41, the negative electrode plate 42 and the sacrificial electrode 43 is any one of iron, aluminum, stainless, tungsten according to the properties of the waste water.
The method of claim 2,
The overflow chamber 50 has an upper end of the lower chamber 53 connected to the bottom surface 52 of the upper chamber 51, and a flange portion 54 is formed at the lower end of the lower chamber 53. The 54 is tightly coupled to the uppermost supporting plate SPn, and the discharge hole 55 connected to the discharge pipe P2 is connected to the upper chamber 51, and the discharge hole 55 is separated from the lower chamber 53. Electrocoagulation water treatment apparatus, characterized in that disposed in the position.

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