KR101991810B1 - Wastewater treatment system having improved removing efficiency of floating matter and scum - Google Patents

Abstract

The present invention relates to a wastewater treatment apparatus using a multi-attack plate, and more particularly, to a wastewater treatment apparatus having a body housing having a processing space therein and an inflow space opening up and down inside the body housing, A multi-striking plate having a body housing and 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 settling space and an anteroposterior space; A treatment water discharging portion provided at an upper end of the body housing to drain the processed water discharged from the body housing, a sediment discharging portion for discharging sediment deposited in the sedimenting space portion of the lower portion of the body housing, An oxygen supply part for injecting oxygen bubbles into the acidic space part, and an oxygen supply part for injecting oxygen bubbles into the acidic space part, Is provided to oil comprises 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

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wastewater treatment system having improved floating matter and scum removal efficiency,

The present invention relates to a wastewater treatment apparatus, and more particularly, to a wastewater treatment apparatus that separates precipitates from an incoming wastewater, removes floating matters by oxygen bubbles supplied, and effectively removes scum, The present invention relates to a wastewater treatment apparatus using a multi-attack plate.

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 using an aggressive plate.

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 central portion of the body housing; A multi-striking plate provided between a 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 inlet for supplying wastewater into the inflow space of the inner body housing, A sediment discharging part for discharging sediment deposited in the sedimenting space part of the body housing which is the lower side of the inner body housing and discharging oxygen bubbles to the aerating part space; An oxygen supply part for spraying, and a floating part provided to float on the treated water in the acidic space part to separate and discharge the scum Wherein the wastewater supplied by the wastewater inflow portion flows into the settling space portion along the inflow space portion of the inner body housing to precipitate the precipitate, And then the float is mixed with the oxygen bubbles supplied by the oxygen supply unit. The treated water from which the floating matters are removed is discharged to the treated water discharge unit, and the scum is separated and discharged by the scum discharge unit.

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 oxygen supply unit may include an oxygen supply line provided at an upper end of the multi-attack plate in which a plurality of through holes are not formed, an oxygen injection nozzle formed at regular intervals along the oxygen supply line, And a feed pump.

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 using the multi-attack plate according to the present invention, after the precipitate is separated from the influent wastewater, the scum generated is removed by the supplied oxygen, as well as the scum is removed, It is a very useful and effective invention that can improve the treatment efficiency.

1 is a view showing a wastewater treatment apparatus using a multi-attack plate 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 using a multi-attack plate 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 supply unit according to the present invention, FIG. 5 is a view showing a scum discharge unit according to the present invention, FIG. 6 is a view showing a gas discharge unit according to the present invention, FIG. 8 is a view illustrating another embodiment of the circulation unit according to the present invention. FIG.

As shown in the drawing, a wastewater treatment apparatus 10 using a multi-attack plate includes a body housing 100, an inner body housing 200, a multi-attack plate 300, a wastewater inlet 400, A sediment discharging unit 600, an oxygen supplying unit 700, and a scum discharging unit 800.

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 agitation plate 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 separate the processing space 110 from the settling space 112, (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 oxygen supply unit 700 is provided on the upper side of the multi-attack plate 300 to inject oxygen bubbles into the aerated space part 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 operation of the wastewater treatment apparatus 10 using the multi-attack plate will be described. After the wastewater is supplied to the inflow space 210 of the inner body housing 200 by the wastewater inflow part 400, And the precipitate is precipitated.

The wastewater from which the precipitate has been separated is transferred to the diffusion space 114 through the through hole 310 of the attack plate 300 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.

As shown in FIG. 4, the oxygen supply unit 700 includes an oxygen supply pipe 710, an oxygen injection nozzle 720, and an oxygen supply pump 730.

The oxygen supply pipe 710 is provided at the upper end of the multi-attack plate 300 in which a plurality of through holes are not formed.

The oxygen injection nozzle 720 is formed at regular intervals along the oxygen supply pipe 710 and the oxygen supply pump 730 is provided to supply oxygen to the oxygen supply pipe 710.

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

Claims (2)

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 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 settling space portion and an aeration space portion;
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;
An oxygen supply unit for injecting oxygen bubbles into the oxygen gas space; And
A scum discharging head provided on the scum frame for discharging the scum, a scum buoy for floating the scum frame, and a scum bucket for floating the scum frame, The scum discharging tube has a flexible one end communicating with the scum discharging port and the other end located outside the body housing to discharge the scum. The scum discharging tube generates a suction force to discharge the scum through the scum discharging port and the scum discharging tube And a scum discharging portion including a scum discharging pump for discharging the scum,
The wastewater supplied by the wastewater inflow portion flows into the precipitation space portion along the inflow space portion of the inner body housing, and after the precipitate is settled, the wastewater is transferred to the aerosol space portion through the through holes of the multi-attack plate, The scum is separated and discharged by the scum discharging part, and the scum is separated and discharged by the scum discharging part,
The treated water discharging portion
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;
A plurality of discharge diaphragms for partitioning the process water discharge space portion into the process water discharge pipe into a predetermined size;
A process water discharge pipe provided in the process water discharge space partitioned by the discharge diaphragm to discharge the treated process water; And
A plurality of water discharge holes are formed along a corresponding end portion of the discharge diaphragm having a predetermined width and contacting an inner surface of the process water discharge space portion so as to adjust the size of each of the process water discharge space portions partitioned by moving the discharge diaphragm along the process water discharge pipe path A diaphragm frame, a diaphragm packing provided between the diaphragm rim and the process water discharge pipe, a moving plate extending from the diaphragm rim and having a constant arc in an outer circumferential direction, a driven fisher unit formed along the outer circumferential surface of the moving plate, A driving gear engaged with the driven gear, and a driving motor for rotating the driving gear,
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. The method according to claim 1,
The bottom surface of the body housing,
And is inclined downward toward the outer side with respect to the center point,
The sediment discharging portion
A sediment discharge pipe formed along the outer periphery of the bottom surface of the body housing;
A scraper for scraping the bottom surface of the body housing to transfer the precipitate to the sediment discharge pipe;
A scraper driving unit for rotating the scraper with respect to a bottom center point of the body housing; And
And a sediment outlet for discharging sediment precipitated in the sediment discharge pipe.

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