KR102086902B1 - Wastewater treatment system with improved mixing efficiency comprising rotatable oxygen supplying plate having improved removing efficiency of floating matter and scum - Google Patents

Abstract

The present invention relates to a wastewater treatment apparatus with improved mixing efficiency, and more particularly, an inner body having a body housing having a treatment space therein and an inflow space opened vertically therein, the inner body being provided at an inner central portion of the body housing. A housing, a diaphragm provided between the lower end of the inner body housing and the body housing for partitioning the treatment space into a precipitation space and an air disperser space, a wastewater inlet for supplying wastewater to the inflow space of the inner body housing, and the body housing. Treatment water discharge portion for draining the treated water is provided in the upper portion of the sediment discharge portion for discharging the precipitate precipitated in the sedimentation space portion of the body housing which is lower side of the inner body housing, sediment in the sedimentation space portion A treatment water supply unit for introducing the separated treated water into an acid space, and an acid into the acid space An oxygen supply unit for injecting bubbles, an oxygen supply rotation unit for rotating the treated water supply unit based on the inner body housing, and a scum discharge unit configured to float in the treated water of the air diffuser space to separate and discharge the scum; Include.
According to the present invention as described above, after the sediment is separated from the introduced wastewater, the suspended matter is also removed by the oxygen supplied, as well as the scum generated can be removed, thereby improving the treatment efficiency.

Description

Wastewater treatment system with improved mixing efficiency comprising rotatable oxygen supplying plate having improved removing efficiency of floating matter and scum}

The present invention relates to a sewage water treatment apparatus, and more particularly, after sediment is first separated from the introduced wastewater, the suspended matter is removed by the oxygen bubbles supplied, and the scum is also effectively separated and discharged to improve treatment efficiency. The present invention relates to a wastewater treatment apparatus with improved mixing efficiency.

There are 57 sewage treatment plants in Korea equipped with anaerobic digesters. Most sewage treatment plants are medium-sized sewage treatment plants with 200,000 tons of working capacity. Nitrogen load due to digestive reflux water is about 86% of the design nitrogen load.

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

As a result, energy independence and sludge reduction projects continue to increase, improve and expand the sewage treatment plant digestive tanks, and in particular, the need for technology development and demonstration to cope with the increase in pollutant inflow load caused by digestive sludge desorbent is increasing. .

The high concentration of return water is returned to the inlet without any additional treatment, causing rapid load fluctuations, making it difficult to operate the sewage treatment plant and causing deterioration of discharged water quality. In particular, it is known that water deterioration phenomenon is prominent in winter when the water temperature decreases.

Furthermore, the load of food waste water contaminants entering the sewage treatment facility is expected to increase due to the discharge after solid-liquid separation according to the food waste metering system, the allowance and expansion of kitchen waste crushers, and in addition to the decrease in nitrogen removal efficiency due to the decrease in water temperature in winter. At this time, the influence of nitrogen load due to the return water is a great problem, but there is no system that can solve all the problems in Korea at this time.

[Preceding technical literature]

[Patent Documents]

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

Accordingly, the present invention has been made in order to solve the above problems, the body housing having a processing space therein, having an inflow space open in the vertical direction therein, the inner body housing provided in the inner central portion of the body housing And a plurality of through holes and provided between the lower end of the inner body housing and the body housing to divide the processing space into the settling space portion and the diffuser space portion, for supplying wastewater to the inflow space portion of the inner body housing. Waste water inlet, a treatment water discharge part provided in the upper end of the body housing for draining the treated water, sediment discharge unit for discharging the precipitate precipitated in the sediment space portion of the body housing which is the lower side of the inner body housing , Floating in the oxygen supply unit for injecting oxygen bubbles to the acid space, and the treated water of the acid space. And a scum discharge part for separating and discharging the scum, and after separating the sediment from the wastewater introduced, the suspended solids are also removed by the supplied oxygen, as well as the scum generated can be removed to improve the treatment efficiency. It is an object of the present invention to provide a wastewater treatment apparatus with improved mixing efficiency.

The present invention for achieving the above object, the body housing having a processing space therein, the inner body housing having an inflow space open in the vertical direction therein, the inner body housing provided in the inner central portion of the body housing, and the lower end of the inner body housing A partition provided between the body housings for partitioning the processing space into a settling space and an air space, a wastewater inlet for supplying wastewater to the inflow space of the inner body housing, and a treatment provided at the upper end of the body housing Treated water discharge part for draining the water, a sediment discharge part for discharging the precipitate precipitated in the sedimentation space portion of the body housing which is the lower side of the inner body housing, the treated water in which sediment is separated from the sedimentation space portion to the aerobic space portion Treatment water supply unit for introducing, is provided on the side of the diaphragm to distribute the oxygen bubbles to the air space An oxygen supply part for rotating, an oxygen supply rotating part for rotating the oxygen supply part with respect to the inner body housing, and a scum discharge part provided to float in the treated water of the air diffuser space part to separate and discharge the scum; The wastewater supplied by the wastewater inflow portion is introduced into the precipitation space portion along the inflow space portion of the inner body housing, and after the precipitate is precipitated, it is moved to the aerobic space portion by the treated water supply portion and then supplied by the oxygen supply portion. The suspended matter is mixed with the oxygen bubbles to separate the treated water, and the treated water from which the suspended matter is removed is discharged to the treated water discharge part, and the scum is separated and discharged by the scum discharge part.

Preferably, the inner body housing, the lower end further comprises a diffusion portion inclined toward the outside toward the lower side.

The treatment water discharge unit may include a treatment water discharge space having an upper portion of the treatment water discharge space that is open upward, and a plurality of treatment water discharge pipes provided along an outer periphery of the upper end of the body housing, and a plurality of treatment water discharge pipes at predetermined intervals. And a treatment water discharge pipe for discharging the treatment water introduced into the treatment water discharge space part, and after the treatment water of the diffuser space part overflows to the treatment water discharge space part, it is drained through each treatment water discharge pipe.

Further, a plurality of discharge plates are further provided to partition the treatment water discharge space into the treatment water discharge pipe into a predetermined size, and each treatment water discharge space is provided with each treatment water discharge pipe.

And a discharge space adjusting unit for moving the discharge plate along the treatment water discharge pipe to adjust the size of each of the partitioned treatment water discharge spaces.

In addition, the discharge space control unit has a predetermined width, the plate border provided along the corresponding end of the discharge plate in contact with the inner surface of the treatment water discharge space, the plate provided between the plate border and the treatment water discharge pipe. Packing, extending to the plate border, a moving plate having a predetermined arc in the outer circumferential direction, a driven gear portion formed along the outer circumferential surface of the moving plate, a drive gear to be engaged with the driven gear portion, and rotating the drive gear For a drive motor, including.

And the bottom of the body housing is formed to be inclined downward toward the outside relative to the center point, the sediment discharge portion, the sediment discharge pipe is formed along the outer periphery of the bottom of the body housing, by scraping the bottom surface of the body housing sedimentation And a scraper driving unit for rotating the scraper about the bottom center point of the body housing, and a sediment discharge pipe for discharging the precipitate deposited in the sediment discharge pipe. .

The treatment water supply unit may further include a treatment water supply pipe including a plurality of treatment water supply pipes along the outer periphery of the body housing such that a lower end thereof communicates with the precipitation space part, and an upper end thereof communicates with the diffuser space part. It includes a treated water supply valve, to.

The oxygen supply unit has an oxygen supply space portion between the diaphragm, an oxygen supply plate provided outside the lower end of the inner body housing, a plurality of oxygen injection nozzles formed at a predetermined interval along the oxygen supply plate, and the 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 toward the outer end from the inner end adjacent to the inner body housing.

And the oxygen supply rotating part, the rotary frame is located in the inlet space portion of the inner body housing to be connected to the oxygen supply plate, a rotary drive unit for rotating the rotary frame, and for fixing the rotary drive unit to the inner body housing A fixed frame, including.

The scum discharge unit has a scum frame and a scum discharge port, a scum discharge head provided in the scum frame for discharging the scum, a scum buoy for floating the scum frame, and one end of the scum discharge port. Communicating, the other end includes a scum discharge tube which is located outside the body housing and the scum is discharged, 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 apparatus may further include a delay unit located in the acidic space space to delay the upward movement of the waste water and the oxygen bubbles from which the precipitate is removed to improve the mixing ratio.

And the delay portion, the outer end is provided along the inner surface of the body housing, the first inclined downward toward the inner side, the inner end portion is spaced apart from the outer peripheral surface of the inner body housing by a predetermined interval to form a moving path, And a second delay plate having an inner end portion provided along an outer surface of the inner body housing and downwardly inclined toward the outer side, the outer end portion being spaced apart from the inner circumferential surface of the body housing to form a moving path. At least one of the first delay plate and the second delay plate are provided, respectively, are alternately positioned in the vertical direction.

The first delay plate and the second delay plate may further include a plurality of communication holes.

And a gas discharge part for discharging the gas contained in the wastewater.

In addition, the gas discharge portion, extending to the upper side of the body housing, the gas discharge housing is formed narrower toward the upper side, provided in the interior of the gas discharge housing to extend to the upper side of the inner body housing, the narrower toward the upper side The first gas filter for separating the gas and the liquid, the first dry filter for filtering the gas passed through the first gas liquid filter is provided between the internal gas discharge housing, the gas discharge housing and the internal gas discharge housing, And a second gas-liquid filter provided in the internal gas discharge housing for separating gas and liquid, and a second dry filter for filtering the gas passed through the second gas-liquid filter.

And a circulation portion for circulating the treated water in the air space portion to the inflow space portion, further provided in the inner body housing.

In addition, the circulation portion has a plurality of circulation holes formed along the inner body housing, a communication hole corresponding to each of the circulation holes, the circulation ring is provided to surround the inner body housing, and rotates the circulation ring It includes a circulation opening and closing portion, which controls the opening and closing degree of each communication hole and the corresponding circulation hole.

And the circulation portion, provided with a plurality of circulation holes formed along the inner body housing, the inner body housing, the circulation opening and closing ring is provided to be movable along the inner body housing, and the circulation opening and closing the inner body It includes a circulation opening and closing unit for moving along the housing to adjust the opening and closing degree of the circulation hole.

As described above, according to the wastewater treatment apparatus with improved mixing efficiency according to the present invention, after separating the sediment from the introduced wastewater, the suspended solids are also removed by the supplied oxygen, as well as the scum generated and the gas is treated. It is a very useful and effective invention that can improve the processing efficiency.

1 is a view showing the wastewater treatment apparatus is improved mixing efficiency according to the present invention,
2 is a view showing a treated water discharge unit according to the present invention,
3 is a view showing a precipitate discharge 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 discharge unit 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 the circulation portion further provided according to the present invention,
8 is a view showing another embodiment of the circulation unit according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The detailed description, which will be given below with reference to the accompanying drawings, is intended to explain exemplary embodiments of the present invention and is not intended to represent the only embodiments in which the present invention may be practiced. The following detailed description includes specific details in order to provide a thorough understanding of the present invention. However, one of ordinary skill in the art appreciates that the present invention may be practiced without these specific details.

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

Throughout the specification, when a portion is said to "comprising" (or including) a component, this means that it may further include other components, except to exclude other components unless otherwise stated. do. In addition, the term "... part" described in the specification means a unit that processes at least one function or operation. Also, "a" or "an", "one", "the", and the like shall not be construed herein in the context of describing the present invention (particularly in the context of the following claims). Unless otherwise indicated or clearly contradicted by context, it may be used in the sense including both the singular and the plural.

In describing the embodiments of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, terms to be described below are terms defined in consideration of functions in the embodiments of the present invention, which may vary according to intentions or customs of users and operators. Therefore, the definition should be made based on the contents throughout the specification.

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

1 is a view showing the wastewater treatment apparatus with improved mixing efficiency according to the present invention, Figure 2 is a view showing a treated water discharge unit according to the present invention, Figure 3 is a view showing a sediment discharge unit according to the present invention. 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, and FIG. FIG. 8 is a view illustrating a state in which a circulation unit according to the present invention is further provided, and FIG. 8 is a view illustrating another embodiment of the circulation unit according to the present invention.

As shown in the figure, the wastewater treatment apparatus 10 with improved mixing efficiency includes a body housing 100 and an inner body housing 200, a diaphragm 300, a wastewater inlet 400, and a treated water outlet 500. , Sediment discharge unit 600, oxygen supply unit 700, scum discharge unit 800, the treated water supply unit 1000 and the oxygen supply rotating unit 1100.

Body housing 100 is a processing space 110 is formed therein, is formed in a circular cylinder having a diameter or a square and polygon.

In addition, the inner body housing 200 has an inflow space 202 that is open in the vertical direction therein, and is provided in the inner central portion of the body housing 100, and is preferably formed in a cylindrical shape.

The diaphragm 300 has a plurality of through holes 310, and is provided between the lower end of the inner body housing 200 and the body housing 100 to provide the treatment space 110 with the precipitation space 112 and the diffuser space ( Section 114).

Here, the inner body housing 200 further includes a diffusion portion 210 inclined outward toward the lower side toward the lower side to diffuse while reducing the speed of the wastewater flowing into the precipitation space portion 112 to increase the precipitation rate of the precipitate. .

In addition, the wastewater inlet 400 is provided to supply wastewater to the inlet space 210 of the inner body housing 200.

The treatment water discharge part 500 is provided at the upper end of the body housing 100 so as to drain the treated treatment water.

And the sediment discharge unit 600 is provided for discharging the precipitate precipitated in the sedimentation space portion 112 of the body housing 100 which is the lower side of the inner body housing (200).

The treated water supply unit 1000 is provided to introduce the treated water from which the sediment is separated from the settling space portion 112 into the acidic space portion 114.

In addition, the oxygen supply unit 700 is provided on the upper side of the diaphragm 300 is provided for injecting oxygen bubbles to the air diffuser space 114.

The scum discharge unit 800 is provided to float in the treated water of the air diffuser space 114 to separate and discharge the scum.

Looking at the operation state of the wastewater treatment device 10 with improved mixing efficiency as described above, after the wastewater is supplied to the inlet space 210 of the inner body housing 200 by the wastewater inlet 400, the precipitation space portion Entering 112, the precipitate is precipitated.

And the waste water from which the sediment is separated is moved to the aerobic space portion 114 by the treated water supply unit 1000, and then mixed with oxygen bubbles supplied by the oxygen supply unit 700 to separate the suspended matter.

The treated water from which the suspended matter is removed is discharged to the treated water discharge unit 500, and the scum is separated and discharged by the scum discharge unit 800.

Thus, it is possible to effectively remove the sediment, suspended matter and scum from the waste water can improve the treatment efficiency.

To this end, the treatment water discharge unit 500 includes a treatment water discharge pipe 510 and a treatment water discharge pipe 520, as shown in FIG.

The treatment water discharge pipe 510 has a treatment water discharge space 512 that is opened upwardly therein and is provided along an outer circumference of the upper end of the body housing 100.

In addition, a plurality of treatment water discharge pipes 520 are provided in the treatment water discharge pipe 510 at predetermined intervals to discharge the treated water introduced into the treatment water discharge space 512.

After the treated water of the diffuser space 114 is overflowed to the treated water discharge space 512, the treated water is discharged through each of the treated water discharge pipes 520.

Thus, the treated water is discharged in a plurality of directions to improve the discharge efficiency.

Here, a plurality of discharge plate 530 is further provided to partition the treatment water discharge space 512 of the treatment water discharge pipe 510 into a predetermined size.

Each treatment water discharge space 512 partitioned by the discharge plate 530 is provided with a treatment water discharge pipe 520 to quickly discharge the treatment water of the treatment water discharge space 512.

In addition, the treatment water discharge unit 500 moves the discharge plate 530 along the treatment water discharge pipe 510 to control the discharge space adjusting unit 540 for adjusting the size of each treatment water discharge space 512 partitioned. It further includes.

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

The plate border 541 has a predetermined width and is provided along the corresponding end of the discharge plate 530 in contact with the inner surface of the treated water discharge space 512.

In addition, the diaphragm packing 542 is provided between the diaphragm 541 and the treatment water discharge pipe 510 to partition each treatment water discharge space 512.

The moving plate 543 is formed in the plate rim 541 and is formed in a predetermined arc in the outer circumferential direction, and is formed to be movable along the outer circumference of the treated water discharge pipe 510.

The driven gear portion 544 is formed along the outer circumferential surface of the movable plate 543.

The drive gear 545 is meshed with the driven gear portion 544, and the drive motor 546 is provided to rotate the drive gear 545.

In addition, as shown in Figure 3, the bottom of the body housing 100 is formed to be inclined downward toward the outside with respect to the center point.

And the sediment discharge unit 600 is composed of a sediment discharge pipe 610 and the scraper 620, the scraper driver 630 and the sediment discharge pipe 640.

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

In addition, the scraper 620 is provided for scraping the bottom of the body housing 100 to move the precipitated precipitate to the sediment discharge pipe 610.

The scraper driver 630 is provided to rotate the scraper 620 with respect to the bottom center point of the body housing 100.

And the sediment discharge pipe 640 is provided to discharge the precipitate precipitated in the sediment discharge pipe 610.

In addition, as shown in FIG. 4, the treatment water supply unit 1000 includes a treatment water supply pipe 1010 and a treatment water supply valve 1020.

The treatment water supply pipe 1010 has a plurality of lower ends communicating with the precipitation space 112 and a plurality of upper ends along the outer periphery of the body housing 100 so as to communicate with the diffuser space 114.

And the treatment water supply valve 1020 is provided to open and close each treatment water supply pipe (1010).

Through each of the treated water supply pipes 1010, the wastewater of the sedimentation space portion 112 may be supplied to the acidic space portion 114.

Of course, by operating each treatment water supply valve 1020 to open and close the treatment water supply pipe 1010, it is possible to adjust the waste water supply amount.

In addition, the oxygen supply unit 700 is composed of an oxygen supply plate 710, oxygen injection nozzle 720 and the oxygen supply pump 730.

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

The oxygen injection nozzle 720 is formed in plural at regular intervals along the oxygen supply pipe 710, and the oxygen supply pump 730 is configured to supply oxygen to the oxygen supply space 712 of the oxygen supply plate 710. It is provided.

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.

By the oxygen injection nozzle 720 provided in plurality in the oxygen supply plate 710 it is possible to improve the mixing ratio with the treated water by injecting the oxygen bubbles inclined upwardly outward.

In addition, the oxygen supply rotating unit 1100 is composed of a rotating frame 1110, a rotating driving unit 1120, and a fixed frame 1130.

The rotating frame 1110 is positioned in the inflow space 202 of the inner body housing 200 to be connected to the oxygen supply plate 710.

The rotating frame 1110 is branched outwards with respect to the central portion to form an end portion.

Of course, the lower end of the inner body housing 200 is the end of the rotating frame 1110 is installed through the connection so as to be connected to the oxygen supply plate 710 it is natural that the incision (not shown) is formed to be rotatable.

In addition, the rotation driving unit 1120 is provided to rotate the rotating frame 1110, and the fixed frame 1130 is provided to fix the rotation driving unit 1120 to the inner body housing 200.

The fixed frame 1130 is also a plurality of branches to the outside with respect to the center, it is natural that the introduced waste water can be moved to the lower side.

In addition, as shown in FIG. 5, the scum discharge unit 800 includes a scum frame 810, a scum discharge head 820, a scum buoy 830, a scum discharge tube 840, and a scum discharge pump 850. do.

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

And the scum buoy 830 is provided to float the scum frame 810, it is preferable that a plurality is provided.

The scum discharge tube 840 is made of a flexible material, and one end thereof communicates with the scum discharge port 822 of the scum discharge head 820, and the other end thereof is positioned outside the body housing 100 to discharge scum.

In addition, the scum discharge pump 850 generates a suction force to discharge the scum through the scum discharge port 822 and the scum discharge tube 840.

Here, the head lifting unit 860 for elevating the scum discharge head 820 is further provided in the scum frame 810.

As the scum discharge head 820 is moved by the head lifting unit 860 to adjust the position of the scum discharge port 822, the discharge amount can be adjusted according to the generated scum height.

In addition, the body housing 100 further includes a delay unit 120 positioned in the air space space 114 to delay the upward movement of the waste water and oxygen bubbles from which the precipitate is 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 along the inner surface of the body housing 100 and sloped downward toward the inner side, and the inner end is spaced apart from the outer circumferential surface of the inner body housing 200 by a predetermined distance. Form.

In addition, the second delay plate 124 is provided with the inner end along the outer surface of the inner body housing 200, the inclined downward toward the outside, the outer end is spaced apart from the inner peripheral surface of the body housing 100 by a predetermined distance To form.

At least one of the first delay plate 122 and the second delay plate 124 is provided, respectively, and are alternately positioned in the vertical direction to improve the mixing ratio of the waste water and the oxygen bubbles from which the precipitate is removed to separate the suspended matter. .

In addition, a plurality of communication holes 126 are further formed in the first delay plate 122 and the second delay plate 124 so that a part of the waste water and the oxygen bubbles pass.

In addition, as shown in Figure 6, further includes a gas discharge unit 900 for discharging the gas contained in the waste water.

The gas discharge unit 900 includes a gas discharge housing 910 and an internal gas discharge housing 920, a first gas liquid filter 930, a first dry filter 940, a second gas liquid filter 950, and a second dry type. It consists of a filter 960.

The gas discharge housing 910 extends to the upper side of the body housing 100 and is narrower toward the upper side.

And the inner gas discharge housing 920 is provided in the gas discharge housing 910 to extend to the upper side of the inner body housing 200, is formed narrower toward the upper side.

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

In addition, 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 internal gas discharge housing 920 to separate the gas and the liquid.

The second dry filter 960 filters the gas that has passed through the second gas-liquid filter 950.

By treating the gas contained in the wastewater and the treated water introduced by the gas discharge unit 900, it is possible to treat toxic substances and odors contained in the gas.

In addition, as shown in Figure 7, the circulation unit 220 for circulating the treated water of the air space unit 114 to the inlet space 210 is further provided in the inner body housing (200).

The circulation part 220 is composed of a circulation hole 222, a circulation ring 224 and the 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 circulation opening and closing driving unit 226 rotates the circulation ring 224 to control the amount of circulation by adjusting the opening and closing degree of each communication hole 225 and the corresponding circulation hole 222.

Meanwhile, as shown in FIG. 8, the circulation part 220 ′ of another embodiment includes a circulation hole 222 ′, a circulation opening and closing ring 224 ′, and a circulation opening and closing driving part 226 ′.

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

And the circulation opening and closing ring 224 'is provided to surround the inner body housing 200, it is provided to be movable along the inner body housing (200).

The circulation opening and closing driving unit 226 'adjusts the amount of circulation by adjusting the opening and closing degree of the circulation hole 222' by moving the circulation opening and closing ring 224 '.

10: wastewater treatment device 100: body housing
20: internal body housing 300: diaphragm
400: wastewater inlet 500: treated water outlet
600: sediment discharge unit 700: oxygen supply unit
800: scum discharge unit 900: gas discharge unit
1000: treated water supply unit 1100: oxygen supply rotating unit

Claims (3)

A body housing having a processing space therein;
An inner body housing having an inflow space that is open in the vertical direction and provided in 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 partition the treatment space into a precipitation space and an air dispersal space;
A wastewater inlet for supplying wastewater to the inflow space of the inner body housing;
A treated water discharge part provided at an upper end of the body housing to drain the treated water filtered;
A sediment discharge part for discharging the precipitate precipitated in the sedimentation space portion of the body housing which is the lower side of the inner body housing;
A treated water supply unit for introducing the treated water from which the sediment is separated from the sedimentation space portion into an acidic space portion;
An oxygen supply unit for injecting oxygen bubbles into the acid space;
An oxygen supply rotating unit for rotating the oxygen supply unit based on the inner body housing; And
And a scum discharge unit provided to float in the treated water of the air diffuser space to separate and discharge the scum.
The treated water discharge unit,
A treatment water discharge pipe passage having a treatment water discharge space open to an upper side and provided along an outer circumference of the upper end of the body housing; And
A plurality of treatment water discharge pipes provided at a predetermined interval in the treatment water discharge pipe line for discharging the treatment water introduced into the treatment water discharge space part; and the treated water of the diffuser space part overflows to the treatment water discharge space part. After that, to be drained through each treated water discharge pipe,
The treated water supply unit,
A treatment water supply pipe having a lower end portion communicating with the precipitation space part and having a plurality of upper end portions communicating with the diffuser space part along the outer periphery of the body housing; And
Includes; a treatment water supply valve for opening and closing each treatment water supply pipe,
The oxygen supply unit,
An oxygen supply plate having an oxygen supply space portion between the diaphragm and provided at an outer side of a lower end of the inner body housing;
Oxygen injection nozzles formed in plurality at regular intervals along the oxygen supply plate; And
And an oxygen supply pump for supplying oxygen to the oxygen supply space portion of the oxygen supply plate.
Wastewater supplied by the wastewater inlet unit,
After the sediment is introduced into the sedimentation space portion along the inflow space portion of the inner body housing, the sediment is precipitated, moved to the aerobic space portion by the treated water supply unit, and then mixed with the oxygen bubbles supplied by the oxygen supply unit to separate the suspended matter,
Treated water from which the suspended matter is removed is discharged to the treated water discharge part, and the scum is separated and discharged by the scum discharge part. delete The method of claim 1,
A plurality of discharge plate to partition the treated water discharge space portion of the treated water discharge pipe into a predetermined size; is further provided,
Each of the treated water discharge spaces is a wastewater treatment apparatus with improved mixing efficiency, characterized in that each of the treated water discharge pipe is provided.

Images