KR101993666B1 - Wastewater treatment system with improved treatment efficiency using oxygen bubble - Google Patents

Abstract

The present invention relates to a wastewater treatment apparatus with improved treatment efficiency, and more particularly, to a wastewater treatment apparatus having a body housing having a processing space portion therein and an inflow space portion vertically opened inside the body housing, A diaphragm provided between the lower end of the inner body housing and the body housing for partitioning the processing space into a settling space and an aeration space, a wastewater inlet for supplying wastewater into the inflow space of the inner body housing, A sediment discharging portion for discharging sediment deposited in the sedimentation space portion of the body housing, which is a lower side of the inner body housing, for discharging treated water discharged at the upper end of the sedimentation space, A treatment water supply unit for introducing the separated treated water into the acidic space unit, Is provided to float in the oxygen supply portion, and the treated parts of the space group for ejecting air bubbles and a scum discharge unit, for discharging the scum separated.
According to the present invention, after the precipitate is separated from the influent wastewater, the scum generated can be removed as well as the suspended solids can be removed by the supplied oxygen, thereby improving the treatment efficiency.

Description

TECHNICAL FIELD [0001] The present invention relates to a wastewater treatment system having improved treatment efficiency using oxygen bubbles,

The present invention relates to a wastewater treatment apparatus, and more particularly, to a wastewater treatment apparatus that separates sediment from an incoming wastewater, removes suspended matter by oxygen bubbles to be supplied, To a wastewater treatment apparatus having improved treatment efficiency.

There are 57 sewage treatment plants equipped with anaerobic digesters in Korea. Most sewage treatment plants have a capacity of 200,000 tons of municipal sewage treatment plants. It is known that the nitrogen load due to the digested recirculating water is 86% of the designed nitrogen load, and a separate recirculating water treatment is required for stable nitrogen removal.

Although the amount of reflux water in the sewage treatment plant sludge treatment system is less than 1% of the influent flow, the nitrogen load is 15-40% of the influent load and 50% of the phosphorus load.

As a result, there is an increasing need for technology development and demonstration to cope with the increasing load of contaminant inflow due to digestion sludge desorption, due to the tendency of improvement, expansion and new establishment of digestion tank of sewage treatment plant by continuous promotion of energy independence and sludge reduction project .

Such high concentration of recycled water is returned to the inlet without any additional treatment, resulting in a sudden change in load, which makes it difficult to operate the sewage treatment plant and deteriorates the quality of discharged water. It is known that the deterioration of water quality is noticeable especially in the winter season when the water temperature is lowered.

Furthermore, it is expected that the load of food wastewater pollutant flowing into the sewage treatment facility will be increased due to the allowance and expansion of solid waste disposal after kitchen solid waste separation according to the amount of food waste, and the decrease of nitrogen removal efficiency due to lowered water temperature in the winter season At this time, the influence of the nitrogen load due to the reflux water is increased, which is a big problem. However, there is not yet developed a system capable of solving all the problems in the domestic environment.

[Prior Art Literature]

[Patent Literature]

Korean Patent Publication No. 10-2017-0009155 (2017.01.25)

Accordingly, the present invention has been made in view of the above problems, and it is an object of the present invention to provide an internal combustion engine having a body housing having a processing space therein and an inflow space vertically opened inside the body housing, A multi-striking plate having a plurality of through-holes, the multi-striking plate being disposed between a lower end of the inner body housing and the body housing to divide the processing space into a precipitation space and an acidification space, A waste water outlet for discharging the sediment deposited in the sedimentation space of the body housing, which is located below the inner body housing, An oxygen supply part for injecting oxygen bubbles into the acidic space part, and an oxygen supply part for floating the treated water in the acidic space part And a scum discharging unit for separating the scum from the wastewater. The scum can be removed from the wastewater flowing into the wastewater, and the scum generated can be removed by oxygen supplied to the wastewater. The present invention provides a wastewater treatment apparatus with improved treatment efficiency.

According to an aspect of the present invention, there is provided an internal combustion engine comprising a body housing having a processing space therein, an internal body housing provided at an inner center of the body housing, a lower end of the internal body housing, A diaphragm provided between the body housing and partitioning the process space section into a settling space section and an acidified space section; a wastewater inflow section for supplying wastewater into the inflow space section of the inner body housing; A sediment discharge unit for discharging the precipitate settled in the sedimentation space of the body housing under the inner body housing, a treatment water discharging unit for draining the water from the sedimentation unit, An oxygen supply portion for injecting oxygen bubbles into the oxygen-containing space portion, And a scum discharging portion provided so as to float on the treated water in the acidic space portion to separate and discharge the scum. The wastewater supplied by the wastewater inlet portion flows into the sedimentation space portion along the inflow space portion of the inner body housing, The treated water is moved to the acidic space part by the treated water supply part and then mixed with the oxygen bubbles supplied by the oxygen supplying part to separate the suspended matter and the treated water from which the suspended matter has been removed is discharged to the treated water discharge part, The scum is separated and discharged by the scum discharging portion.

Preferably, the inner body housing further includes a diffusion part whose lower end is inclined outward toward the lower side.

The process water discharging unit includes a treated water discharging pipe provided along the outer periphery of the upper end of the body housing and having a treated water discharging space portion upwardly opened therein and a plurality of treating water discharging pipes provided at predetermined intervals in the treated water discharging pipe, And a process water discharge pipe for discharging the process water introduced into the process water discharge space part, wherein the treated water in the acidic space part is overflowed to the process water discharge space part and then drained through each process water discharge pipe.

In addition, a plurality of discharge diaphragms are provided to divide the process water discharge space into the process water discharge pipe into a predetermined size, and the process water discharge space is provided with the process water discharge pipe.

And a discharge space regulator for regulating the size of each process water discharge space partitioned by moving the discharge diaphragm along the process water discharge pipe path.

In addition, the discharge space adjusting unit may include a diaphragm frame having a predetermined width and disposed along a corresponding end of the discharge diaphragm contacting the inner surface of the process water discharge space, a diaphragm frame provided between the diaphragm frame and the process water discharge pipe A driven gear which is formed along the outer circumferential surface of the moving plate, a driving gear which meshes with the driven gear, and a driving gear which rotates the driving gear And a drive motor for driving the motor.

The bottom of the body housing is inclined downward toward the outer side with respect to the center point. The sediment discharging portion is a sediment discharge pipe formed along the outer periphery of the bottom of the body housing. The bottom of the body housing is scraped, A scraper driving part for rotating the scraper with respect to a center point of the bottom surface of the body housing, and a sediment outlet for discharging sediment deposited on the sediment discharge pipe, .

The treatment water supply unit may include a plurality of process water supply pipes disposed along the outer periphery of the body housing so that the lower end portion communicates with the deposition space portion and the upper end portion communicates with the aerated space portion, And a treatment water supply valve for supplying the treatment water.

The oxygen supply unit may include an oxygen supply plate having an oxygen supply space between the diaphragm and the outside of the lower end of the inner body housing, a plurality of oxygen injection nozzles formed at predetermined intervals along the oxygen supply plate, And an oxygen supply pump for supplying oxygen to the oxygen supply space portion of the oxygen supply plate.

In addition, the oxygen supply plate is formed to be inclined downward from an inner end portion to an outer end portion adjacent to the inner body housing.

The scum discharging portion has a scum frame and a scum discharging port. The scum discharging portion includes a scum discharging head provided on the scum frame for discharging the scum, a scum buoy for lifting the scum frame, And a scum discharge pump for discharging the scum through the scum discharge port and the scum discharge tube by generating a suction force.

The apparatus further includes a delay unit located in the aerosol space to delay the upward movement of the wastewater and the oxygen bubbles from which the precipitate is removed, thereby improving the mixing rate.

The delay unit includes a first delay plate having an outer end portion along the inner surface of the body housing and inclined downward toward the inner side, a first delay plate having an inner end spaced apart from the outer peripheral surface of the inner body housing by a predetermined distance, And a second delay plate having an inner end along an outer surface of the inner body housing and a second delay plate inclined downward toward the outer side and having an outer end spaced apart from an inner circumferential surface of the body housing by a predetermined distance, At least one of the first delay plate and the second delay plate is provided, and the first delay plate and the second delay plate are alternately arranged in the vertical direction.

Further, the first delay plate and the second delay plate are further formed with a plurality of communication holes.

And a gas discharging portion for discharging the gas contained in the wastewater.

The gas discharge unit may include a gas discharge housing extending upward from the body housing and narrowing toward the upper side, a gas discharging housing provided inside the gas discharge housing to extend upward from the inner body housing, A first gas-liquid filter provided between the gas-discharging housing and the inner gas-discharging housing for separating gas and liquid, a first dry-type filter for filtering the gas passing through the first gas-liquid filter, A second gas-liquid filter provided in the inner gas discharge housing for separating the gas and the liquid, and a second dry filter for filtering the gas passing through the second gas-liquid filter.

And a circulation part for circulating the treated water in the acidic space part to the inflow space part is further provided in the inner body housing.

The circulation part may include a plurality of circulation holes formed along the inner body housing, a circulation ring having communication holes corresponding to the circulation holes, the circulation ring surrounding the inner body housing, And a circulation opening and closing guide portion for controlling the opening and closing degree of each communication hole and the corresponding circulation hole.

The circulation unit includes a plurality of circulation holes formed along the inner body housing, a circulation opening / closing ring movably provided along the inner body housing to surround the inner body housing, And a circulation opening / closing guide part for moving the housing along the opening and closing degree of the circulation hole.

As described above, according to the wastewater treatment apparatus of the present invention having improved treatment efficiency, after the precipitate is separated from the influent wastewater, the scum is removed by removing the suspended matter by the supplied oxygen, Which is a very useful and effective invention that can improve the treatment efficiency.

1 is a view showing a wastewater treatment apparatus with improved treatment efficiency according to the present invention,
2 is a view showing a treated water discharging portion according to the present invention,
3 is a view showing a sediment discharging unit according to the present invention,
4 is a view showing an oxygen supply unit according to the present invention,
5 is a view showing a scum discharging part according to the present invention,
6 is a view showing a gas discharge unit according to the present invention,
7 is a view showing a state in which a circulation part according to the present invention is further provided,
8 is a view showing another embodiment of the circulation unit according to the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following detailed description, together with the accompanying drawings, is intended to illustrate exemplary embodiments of the invention and is not intended to represent the only embodiments in which the invention may be practiced. The following detailed description includes specific details in order to provide a thorough understanding of the present invention. However, those skilled in the art will appreciate that the present invention may be practiced without these specific details.

In some instances, well-known structures and devices may be omitted or may be shown in block diagram form, centering on the core functionality of each structure and device, to avoid obscuring the concepts of the present invention.

Throughout the specification, when an element is referred to as "comprising" or " including ", it is meant that the element does not exclude other elements, do. Further, the term "part" described in the specification means a unit for processing at least one function or operation. Also, the terms " a or ", "one "," the ", and the like are synonyms in the context of describing the invention (particularly in the context of the following claims) May be used in a sense including both singular and plural, unless the context clearly dictates otherwise.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions in the embodiments of the present invention, which may vary depending on the intention of the user, the intention or the custom of the operator. Therefore, the definition should be based on the contents throughout this specification.

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

FIG. 1 is a view showing a wastewater treatment apparatus with improved treatment efficiency according to the present invention, FIG. 2 is a view showing a treated water discharge unit according to the present invention, FIG. 3 is a view showing a sediment discharge unit according to the present invention FIG. 4 is a view showing an oxygen supplying unit according to the present invention, FIG. 5 is a view showing a scum discharging unit according to the present invention, FIG. 6 is a view showing a gas discharging unit according to the present invention, FIG. 8 is a view showing another embodiment of the circulation unit according to the present invention. FIG.

As shown in the drawing, a wastewater treatment apparatus 10 having improved treatment efficiency includes a body housing 100, an inner body housing 200, a diaphragm 300, a wastewater inflow section 400, a treated water discharge section 500, A sediment discharge unit 600, an oxygen supply unit 700, a scum discharge unit 800, and a process water supply unit 1000.

The body housing 100 has a processing space portion 110 formed therein, and is formed of a circular cylinder having a diameter or a rectangular and polygonal shape.

The inner body housing 200 has an inlet space 202 opened upward and downward, and is formed at the center of the inner portion of the body housing 100, and is formed in a cylindrical shape.

The diaphragm 300 has a plurality of through holes 310 and is disposed between the lower end of the inner body housing 200 and the body housing 100 to divide the processing space 110 into the settling space 112 and the diffused space 114).

The inner body housing 200 further includes a diffusion part 210 inclined downward toward the lower side to diffuse the wastewater flowing into the precipitation space part 112 while increasing the sedimentation rate of the precipitate .

The waste water inflow portion 400 is provided to supply waste water to the inflow space portion 210 of the inner body housing 200.

The treated water discharging part 500 is provided at the upper end of the body housing 100 to drain the processed water.

The sediment discharging unit 600 is provided to discharge sediment deposited in the sedimentation space 112 of the body housing 100, which is the lower side of the inner body housing 200.

The treatment water supply unit 1000 is provided to introduce treated water into the acidic space part 114 from which the precipitate has been separated in the sedimentation space part 112.

Also, the oxygen supply unit 700 is provided for injecting oxygen bubbles into the diffusion space 114.

The scum discharging part 800 is provided to float on the treated water in the acidic space part 114 to separate and discharge the scum.

The wastewater is supplied to the inflow space 210 of the inner body housing 200 by the wastewater inflow part 400 and then supplied to the inflow space 210 of the inner body housing 200. [ (112) to precipitate the precipitate.

The wastewater from which the precipitate has been separated is moved to the diffusion space 114 by the treatment water supply unit 1000 and then mixed with the oxygen bubbles supplied by the oxygen supply unit 700 to separate the suspension.

The treated water from which the floating matters are removed is discharged to the treated water discharging portion 500, and the scum is separated and discharged by the scum discharging portion 800.

Therefore, it is possible to effectively remove sediment, suspended matter and scum from wastewater, thereby improving treatment efficiency.

2, the process water discharge unit 500 includes a process water discharge pipe 510 and a process water discharge pipe 520.

The process water discharge pipe passage 510 has a process water discharge space 512 opened upward and is provided along the outer periphery of the upper end of the body housing 100.

A plurality of process water discharge pipes 520 are provided at predetermined intervals in the process water discharge pipe passage 510 to discharge the process water introduced into the process water discharge space 512.

The treated water in the acidic space part 114 is overflowed to the treated water discharge space 512 and then drained through each treated water discharge pipe 520.

Therefore, the treated water can be discharged in a plurality of directions to improve the discharge efficiency.

Here, a plurality of discharge diaphragms 530 are further provided to divide the process water discharge space 512 of the process water discharge line 510 into a predetermined size.

The process water discharge space 512 partitioned by the discharge diaphragm 530 is provided with a process water discharge pipe 520 to rapidly discharge the process water in the process water discharge space 512.

The process water discharging unit 500 includes a discharge space adjusting unit 540 for adjusting the size of each process water discharge space 512 partitioned by moving the discharge diaphragm 530 along the process water discharge path 510, .

The discharge space adjusting unit 540 includes a diaphragm frame 541, a diaphragm packing 542, a moving plate 543, a driven gear 544, a driving gear 545, and a driving motor 546.

The diaphragm rim 541 is provided along a corresponding end of the exhaust diaphragm 530 having a predetermined width and contacting the inner surface of the process water discharge space 512.

Further, the diaphragm packing 542 is provided between the diaphragm edge 541 and the process water discharge pipe passage 510 to divide the process water discharge space portion 512 into two.

The moving plate 543 is extended from the diaphragm edge 541 and formed in a predetermined arc in the outer circumferential direction and is formed to be movable along the outer periphery of the process water discharge pipe passage 510.

And the to-be-synchronized portion 544 is formed along the outer peripheral surface of the moving plate 543.

The driving gear 545 is engaged with the driven gear 544 and the driving motor 546 is provided to rotate the driving gear 545.

Also, as shown in FIG. 3, the bottom surface of the body housing 100 is inclined downward toward the outer side with respect to the center point.

The sediment discharging unit 600 includes a sediment discharging pipe 610, a scraper 620, a scraper driving unit 630, and a sediment discharging pipe 640.

The sediment discharge pipe passage 610 is formed along the outer periphery of the bottom surface of the body housing 100.

The scraper 620 is provided to scrape the bottom surface of the body housing 100 to move the precipitate to the sediment discharge pipe 610.

The scraper driving unit 630 is provided to rotate the scraper 620 based on the bottom center point of the body housing 100.

And the sediment outlet 640 is provided for discharging sediment deposited in the sediment discharge pipe 610.

4, the process water supply unit 1000 is composed of a process water supply pipe 1010 and a process water supply valve 1020. As shown in FIG.

A plurality of treatment water supply pipes 1010 are provided along the outer periphery of the body housing 100 such that the lower end portion communicates with the settling space portion 112 and the upper end portion communicates with the aerating spatial portion 114.

The process water supply valve 1020 is provided for opening and closing each process water supply pipe 1010.

Waste water in the settling space portion 112 can be supplied to the aerated space portion 114 through each of the treated water supply pipes 1010.

Of course, it is possible to control the supply amount of wastewater by opening / closing the process water supply pipe 1010 by operating each process water supply valve 1020.

The oxygen supply unit 700 includes an oxygen supply plate 710, an oxygen injection nozzle 720, and an oxygen supply pump 730.

The oxygen supply plate 710 has an oxygen supply space 712 with the diaphragm 300 and is provided outside the lower end of the inner body housing 200.

A plurality of oxygen injection nozzles 720 are formed at regular intervals along the oxygen supply pipe 710 and the oxygen supply pump 730 is connected to the oxygen supply space 712 of the oxygen supply plate 710 Respectively.

Here, the oxygen supply plate 710 is formed to be inclined downward from the inner end portion adjacent to the inner body housing 200 toward the outer end portion thereof.

The oxygen bubbles can be injected obliquely upward and outwardly by the oxygen injection nozzles 720 provided in the oxygen supply plate 710 to improve the mixing ratio with the treated water.

5, the scum discharging unit 800 includes a scum frame 810, a scum discharging head 820, a scum bucket 830, a scum discharging tube 840 and a scum discharging pump 850 do.

The scum discharging head 820 has a scum discharging port 822 and is provided in the scum frame 810 to discharge the scum.

The scum chart 830 is provided to float the scum frame 810, and it is preferable that a plurality of scum buckets 830 are provided.

The scum discharging tube 840 is flexible and has one end communicating with the scum discharging port 822 of the scum discharging head 820 and the other end located outside the body housing 100 to discharge the scum.

The scum discharging pump 850 generates a suction force to discharge the scum through the scum discharging port 822 and the scum discharging tube 840.

The scum frame 810 further includes a head elevating portion 860 for moving the scum discharging head 820 up and down.

As the scum discharge head 820 is moved by the head elevating portion 860 to adjust the position of the scum outlet 822, the discharge amount can be adjusted corresponding to the height of the generated scum.

The body housing 100 further includes a delay unit 120 disposed in the aerosol space part 114 to delay the upward movement of the wastewater and the oxygen bubbles from which the precipitate has been removed to improve the mixing ratio.

The delay unit 120 includes a first delay plate 122 and a second delay plate 124.

The first delay plate 122 is provided with an outer end portion along the inner surface of the body housing 100 and is inclined downward toward the inner side. The inner end portion of the first delay plate 122 is spaced apart from the outer peripheral surface of the inner body housing 200, .

The second delay plate 124 has an inner end along the outer surface of the inner body housing 200 and a downward inclination toward the outer side. The outer end of the second delay plate 124 is spaced apart from the inner circumferential surface of the body housing 100 by a predetermined distance, .

At least one of the first delay plate 122 and the second delay plate 124 may be disposed alternately in the up and down direction to improve the mixing ratio of the wastewater from which the precipitate is removed and the oxygen bubbles, .

The first delay plate 122 and the second delay plate 124 are further formed with a plurality of communication holes 126 to allow part of the wastewater and oxygen bubbles to pass therethrough.

Further, as shown in FIG. 6, the apparatus further includes a gas discharging portion 900 for discharging the gas contained in the wastewater.

The gas exhaust unit 900 includes a gas exhaust housing 910 and an inner gas exhaust housing 920, a first gas filter 930, a first dry filter 940, a second gas filter 950, And a filter 960.

The gas discharge housing 910 extends upward from the body housing 100 and is formed narrower toward the upper side.

The inner gas discharge housing 920 is provided inside the gas discharge housing 910 so as to extend to the upper side of the inner body housing 200 and narrows toward the upper side.

The first gas-liquid filter 930 is provided between the gas discharge housing 910 and the inner gas discharge housing 920 to separate the gas and the liquid.

The first dry filter 940 filters the gas passing through the first gas-liquid filter 930.

The second gas-liquid filter 950 is provided in the inner gas discharge housing 920 to separate the gas and the liquid.

The second dry filter 960 filters the gas passing through the second gas-liquid filter 950.

The wastewater introduced by the gas exhaust unit 900 and the gas included in the treatment water are treated to treat toxic substances and odors contained in the gas.

7, the inner body housing 200 further includes a circulation unit 220 for circulating the treated water in the acidic space unit 114 to the inflow space unit 210.

The circulation unit 220 includes a circulation hole 222, a circulation ring 224, and a circulation opening and closing drive unit 226.

A plurality of circulation holes 222 are formed along the inner body housing 200.

The circulation ring 224 has a communication hole 225 corresponding to each circulation hole 222 and is provided to surround the inner body housing 200.

The circular opening and closing guide portion 226 adjusts the amount of circulation by rotating the circulation ring 224 to adjust the degree of opening and closing of the communication holes 225 and the circulation holes 222.

8, the circulating part 220 'of another embodiment is constituted by the circulation hole 222', the circulating opening / closing ring 224 'and the circulating opening / closing driving part 226'.

A plurality of circulation holes 222 'are formed along the inner body housing 200.

The circular opening / closing ring 224 'is provided so as to surround the inner body housing 200 and is movable along the inner body housing 200.

The circular opening and closing guide portion 226 'moves the circular opening and closing ring 224' to adjust the opening and closing degree of the circular hole 222 'to adjust the circulating amount.

10: wastewater treatment apparatus 100: body housing
20: inner body housing 300: multi-attack plate
400: Wastewater inflow section 500: Processed water discharge section
600: Sediment discharge part 700: Oxygen supply part
800: scum discharging part 900: gas discharging part
1000: treated water supply part

Claims (3)

A body housing having a processing space portion therein;
An inner body housing having an inflow space portion opened in a vertical direction inside the body housing, the inner body housing being provided at an inner central portion of the body housing;
A diaphragm provided between the lower end of the inner body housing and the body housing to divide the processing space into a settling space and an aeration space;
A wastewater inflow portion for supplying wastewater to the inflow space portion of the inner body housing;
A process water discharging unit provided at an upper end of the body housing to discharge processed water discharged;
A sediment discharge unit for discharging sediment deposited in a sedimentation space part of the body housing under the inner body housing;
A treatment water supply unit for introducing the treated water separated from the sediment in the sedimentation space to the aerosol space;
An oxygen supply unit for injecting oxygen bubbles into the oxygen gas space; And
And a scum discharging portion provided to float on the treated water of the acidic space portion to separate and discharge the scum,
The oxygen supply unit includes:
An oxygen supply plate formed to be inclined downward from an inner end portion adjacent to the inner body housing toward an outer end portion and having an oxygen supply space portion with the diaphragm and disposed outside the lower end portion of the inner body housing;
A plurality of oxygen injection nozzles formed at predetermined intervals along the oxygen supply plate; And
And an oxygen supply pump for supplying oxygen to the oxygen supply space of the oxygen supply plate,
The scum-
A scum frame;
A scum discharging head provided on the scum frame to discharge the scum;
A scum buoy for floating the scum frame;
A flexible material having one end connected to the scum outlet and the other end disposed on the outer side of the body housing to discharge the scum; And
And a scum discharge pump for generating a suction force to discharge the scum through the scum discharge port and the scum discharge tube,
The wastewater supplied by the wastewater inflow portion is supplied to the wastewater inflow portion,
The water is introduced into the precipitation space part along the inflow space part of the inner body housing to deposit the precipitate and then moved to the aerosol space part by the treatment water supply part and then mixed with the oxygen bubbles supplied by the oxygen supply part,
Wherein the treated water from which the suspended matter is removed is discharged to the treated water discharge portion, and the scum is separated and discharged by the scum discharge portion. The water treatment system according to claim 1,
A process water discharge pipe having a process water discharge space portion opened upwardly inside thereof and provided along an outer periphery of an upper end of the body housing; And
And a plurality of process water discharge pipes provided at predetermined intervals in the process water discharge pipe for discharging the process water flowing into the process water discharge space,
Wherein the treated water in the acidic space part is overflowed to the treated water discharge space part and then drained through each treated water discharge pipe. 3. The method of claim 2,
Further comprising: a plurality of exhaust diaphragms for partitioning the process water discharge space portion into the process water discharge pipe into a predetermined size,
Wherein each of the treated water discharge space portions is provided with the treated water discharge pipe.

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