WO2018225890A1

WO2018225890A1 - Ozone treatment apparatus and water treatment system comprising same

Info

Publication number: WO2018225890A1
Application number: PCT/KR2017/006750
Authority: WO
Inventors: 이광희; 안남우
Original assignee: 경상북도 경주시
Priority date: 2017-06-07
Filing date: 2017-06-27
Publication date: 2018-12-13
Also published as: BR112018072102A2; CN209396964U; BR112018072102B1; KR101835271B1

Abstract

According to the present invention, disclosed is an ozone treatment apparatus comprising: a treatment water tank (610) which has a watertight inner space, and of which one side has formed thereto a sewage inlet (612) for supplying sewage, and the other side has formed thereto a sewage outlet (613) for discharging ozonized sewage; an ozonizer (620) which is connected to the other side of the treatment water tank (610), receives the sewage, generates ozone and enables same to be dissolved in the supplied sewage, and discharges same; and an ozone reactor (630) which has a watertight inner space, and of which the lower part has formed thereto an ozone water inlet (631) connected to the ozonizer (620) so as to receive ozone water, the inside has a partition part (632) disposed in the transverse direction so as to partition the inner space into a plurality of vertically-sectioned contactors (633a-633c), and having a vertically-opened communication hole (634) formed thereon, and the upper part has formed thereto a treated water discharge port (635) connected with the one side of the treatment water tank (610) by means of a treated water supply pipe (640) so as to supply the ozonized treated water to the treatment water tank (610).

Description

Ozone treatment device and water treatment system including the same

The present invention relates to an ozone treatment apparatus and a water treatment system including the same, and more particularly, it is possible to effectively remove and purify organic substances, BOD, bacteria, odors and colors contained in sewage by reacting ozone with contaminated sewage. An ozone treatment apparatus and a water treatment system including the same.

In general, ozone has an effect of sterilizing E. coli contained in sewage or removing organic substances when it comes into contact with sewage. Conventionally, by injecting ozone generated in an ozone generator into a chamber into which sewage is introduced, contaminated sewage is purified by reacting sewage with ozone.

In addition, organic substances or BOD contained in the sewage are easily removed in a high concentration of ozone supersaturated, and bacteria, odors and color removal are removed in a relatively low concentration of ozone, but a conventional ozone treatment apparatus in one chamber Because of the ozone reaction, when the internal ozone concentration is set to high concentration, the effect of removing bacteria, odor, and color is decreased. On the contrary, when the ozone concentration is set at low concentration, the effect of removing organic substances or BOD is lowered. Since there are many chambers to be built, there is a problem in that facility cost and facility scale increase.

In addition, the ozone used in the ozone reaction is not used for other purposes and is discharged as it is discarded as it is, there is a problem in that a constant amount of ozone must be generated in the ozone generator and the load of the ozone waste facility is steadily generated.

[Preceding technical literature]

[Patent Documents]

(Patent Document 1) Registered Patent Publication No. 10-1544604 (2015.08.07), a system for recycling the discharged water of the sewage treatment plant.

The present invention was created in order to solve the above problems, and an object of the present invention is to create a high concentration contact space in which ozone is supersaturated and a low concentration contact space in which ozone is relatively small, thereby purifying sewage by ozone reaction. The present invention provides an ozone treatment apparatus and a water treatment system including the same, which can maximize efficiency and minimize ozone production and load of ozone waste facilities by utilizing ozone used in the ozone reaction for bubble generation required for aeration.

In the ozone treatment apparatus according to the present invention for achieving the above object, a sewage inlet 612 is formed in a watertight inner space and the sewage is supplied to one side, and the sewage outlet 613 to discharge the ozonated sewage to the other side. Treatment tank 610 is formed; An ozone generator 620 connected to the other side of the treatment tank 610 to receive sewage and to generate ozone to dissolve and discharge the supplied sewage; And a watertight inner space is formed and an ozone water inlet 631 is connected to the ozone generator 620 to supply ozone water, and a plurality of contacts are disposed in the transverse direction to divide the inner space up and down. A partition wall portion 632 is formed, which is divided into the tanks 633a to 633c and has a communication hole 634 which is opened up and down, and is connected to one side of the treatment water tank 610 and the treatment water supply pipe 640 at an upper portion. And an ozone reaction tank 630 having a treatment water outlet 635 for supplying the treated water to the treatment tank 610.

Here, the ozone reaction tank 630, the inner space is partitioned up and down by the partition portion 632, the high concentration contact tank 633a for removing the organic substances and BOD contained in the sewage due to the supersaturation of ozone in the lower portion The lower concentration contact tank 633b for removing bacteria, odors and colors contained in the sewage is formed at the upper portion, and the ozone is less dissolved than the high concentration contact tank 633a, and the partition 632 is formed. The lower partition wall 614a and the upper partition wall 614b spaced up and down in the inner space are provided, so that the ozone of the two

contact tanks

633a and 633b is between the high concentration contact tank 633a and the low concentration contact tank 633b. One or more concentration compartments 633c may be formed to maintain the concentration.

In addition, the treatment tank 610 is a plurality of lower partitions 614a extending upwardly from the lower end in the inner space and a plurality of upper partitions 614b extending downwardly from the upper end are alternately disposed at the bottom and the top. A plurality of mixing tanks 615 for mixing ozone water and sewage may be formed.

In addition, the treatment tank 610 further includes an aeration unit 616 for supplying bubbles into the innermost mixing tank 615 in the sewage flow direction among the plurality of mixing tanks 615, the terminal end The mixing tank 615 functions as an aeration tank for degassing ozone contained in the treated water by the bubbles supplied from the aeration unit 616, and a first gas discharge pipe 617 at the top to discharge the degassed ozone to the outside. ) May be provided.

In addition, a second gas discharge pipe 637 is formed at an upper end of the ozone reaction tank 630 to discharge ozone from the outside, and the aeration part 616 includes the first gas discharge pipe 617 and the second gas. Bubbles for injecting into the last mixing tank 615 may be formed using ozone gas supplied in connection with one or more gas discharge pipes of the discharge pipe 637.

On the other hand, the water treatment system according to the present invention for achieving the above object, the first condensation chamber 210 is formed with a watertight inner space 211 and the sewage inlet 212 and the sewage discharge port 213, respectively, Rotating shaft 220 is disposed vertically rotatably in the inner space 211 and a coagulant discharge port 221 for discharging the coagulant supplied from the outside into the inner space, and is mounted around the rotary shaft 220 to rotate together A high speed aggregating apparatus 200 comprising a stirring blade 230 forming a vortex; And a watertight inlet 612 formed with a watertight inner space and the sewage discharged from the high speed aggregator 200 at one side, and a sewage outlet 613 at which the ozone treated sewage is discharged. 610 and an ozone generator 620 connected to the other side of the treatment tank 610 to receive sewage and dissolve and discharge ozone by dissolving it in the supplied sewage, and a watertight inner space is formed below the ozone. An ozone water inlet 631 is formed to be connected to the generator 620 to supply ozone water. The ozone water inlet 631 is formed therein and is disposed in a horizontal direction to partition the internal space into a plurality of contact tanks 633a to 633c which are divided up and down, and are opened up and down. The partition wall portion 632 having a communication hole 634 is provided, and is connected to one side of the treatment tank 610 and the treatment water supply pipe 640 at the top to supply ozonated treatment water to the treatment tank 610. Water discharge It includes; 635, the ozone reaction vessel ozone processing apparatus 600 including the unit 630 is formed.

Here, a second internal agglomeration chamber 310 formed with a tight inner space and a sewage inlet 311 connected to the sewage outlet of the high speed agglomeration device 200 and a sewage outlet 312 is formed at the lower portion thereof; A partition wall 320 disposed in the second agglomeration chamber 310 in a transverse direction and partitioning an inner space into a plurality of agglomeration tanks 321 divided up and down, and having a communication hole 322 opened up and down at a central portion thereof; A non-powered flocculation device 300 including a turbulence preventing plate 330 horizontally disposed at a lower position of each communication hole 322; And a watertight inlet is formed in one side and a sewage inlet 412 connected to the sewage outlet 312 of the non-powered flocculation device 300 on one side thereof, and a treatment water outlet 413 is formed on the other side of the inner space. A reaction chamber which forms a plurality of bubble reaction tanks 416 while the plurality of lower partitions 414 extending upward from the upper portion and the plurality of upper partitions 415 extending downward from the top are alternately disposed at the lower and upper portions ( And a scum skimmer 400 including a bubble generator 420 for generating microbubbles having a micro or nano size and supplying them to the internal space.

According to the ozone treatment apparatus and the water treatment system including the same according to the present invention,

First, in the case of the ozone reaction tank 630 in which the ozone reaction is performed, the internal space is partitioned up and down by the partition wall portion 632 disposed therein, so that ozone is supersaturated in the lower portion to remove organic substances and BOD contained in the sewage. The high concentration contact tank 633a is formed, and the lower concentration contact tank 633b for removing bacteria, odors and colors contained in the sewage is formed by dissolving less ozone than the high concentration contact tank 633a. The efficiency of sewage purification by the reaction can be maximized, and at the same time, the system construction cost and the size of equipment can be minimized.

Second, the partition wall portion 632 is provided with a lower partition wall 614a and an upper partition wall 614b spaced up and down in an inner space, and placed between the high concentration contact tank 633a and the low concentration contact tank 633b. Since one or more concentration block tanks 633c are formed to maintain the ozone concentrations of the

contact tanks

633a and 633b, the sewage of the high concentration ozone discharged from the high concentration contact tank 633a flows directly into the low concentration contact tank 633b. It is possible to effectively prevent the ozone concentration of the low concentration contact tank 633b from rising rapidly.

Third, in the case of the treatment tank 610 for receiving and mixing the sewage and the sewage treated with ozone from the ozone reaction tank 630 into the tank, respectively, the plurality of lower partition walls 614a extending upward from the bottom in the inner space. And a plurality of upper partitions 614b extending downward from the upper end and alternately disposed at the lower and upper parts to form a plurality of mixing tanks 615 for mixing ozone water and sewage, thereby maximizing stagnation time when ozone and sewage react. It is possible to move up and down while passing through each partition (614a, 614b) to be transported can increase the mixing efficiency of ozone water and sewage.

Fourth, the last mixing tank 615 in the sewage flow direction of the plurality of mixing tanks 615 functions as an aeration tank for degassing ozone contained in the treated water by bubbles supplied from the aeration section 616, the upper portion Since the first gas discharge pipe 617 for discharging the degassed ozone to the outside is provided, it is possible to prevent the ozone from being contained in the treated water. In addition, a second gas discharge pipe 637 is formed at an upper end of the ozone reaction tank 630 to discharge ozone from the outside, and the aeration part 616 includes the first gas discharge pipe 617 and the second gas. The ozone generation amount and ozone waste can be recycled by forming bubbles for injecting into the last mixing tank 615 by using ozone gas supplied in connection with one or more gas discharge pipes of the discharge pipes 637. The load on the facility can be minimized.

1 is a schematic diagram showing the overall configuration of a water treatment system according to a preferred embodiment of the present invention,

Figure 2 is a side cross-sectional view showing the configuration of an ozone treatment apparatus according to a preferred embodiment of the present invention,

Figure 3 is a side cross-sectional view showing the configuration of a high speed aggregation device according to a preferred embodiment of the present invention,

Figure 4 is a side cross-sectional view showing the configuration of a non-powered flocculation device according to a preferred embodiment of the present invention,

Figure 5 is a side cross-sectional view showing the configuration of a scheme skimmer according to a preferred embodiment of the present invention,

6 is a schematic diagram illustrating an operation principle in which a plurality of strainers are alternately used according to a preferred embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

Before describing an embodiment of the present invention, several terms to be described below are defined. 'Sewage' referred to below is wastewater containing various pollutants, including sewage overflow (CSO), water-bloom, live sewage, factory wastewater, leachate, manure, and livestock wastewater. Means. Thus, 'floating material' included in the sewage referred to below refers to various kinds of contaminants including chemical sludge, high concentration organic matter, as well as contaminants contained in large quantities in rainwater.

In addition, the term 'coagulation' referred to below refers to a phenomenon in which suspended solids are entangled by contact with each other to form a large mass. It is to be understood that the description is not to be distinguished from the meaning of 'flocculation'.

As shown in FIG. 1, a water treatment system according to a preferred embodiment of the present invention includes an ozone treatment apparatus 600, a high speed aggregating apparatus 200, a non-powered flocculation apparatus 300, and a scum skimmer 400.

First, the ozone treatment apparatus 600 creates a high concentration contact space in which ozone is supersaturated and a low concentration contact space in which ozone is relatively small in one reaction tank, respectively, so that the sewage purification treatment can be maximized by the ozone reaction. The apparatus includes a treatment tank 610, an ozone generator 620, and an ozone reactor 630 as shown in FIG.

The treated water tank 610 is a storage tank for mixing the sewage discharged from the scum skimmer 400 disposed in the front and the ozone water that is ozone dissolved in the ozone reaction tank 630, a watertight internal space is formed on one side A sewage inlet 612 is connected to a sewage outlet 413 of the scum skimmer 400 and is connected to a pipe, and a sewage outlet 613 is formed on the other side to discharge sewage from which ozonated sewage is discharged.

Here, a sewage supply pipe 611 for injecting the sewage supplied and connected to the sewage inlet 612 evenly into the inner space is disposed in the inner space, and at the end of the sewage supply pipe 611 in a horizontal direction in the inner space. It may be in communication with the plurality of nozzles spaced apart so that the sewage may be supplied at a uniform pressure as a whole.

In addition, one side of the treatment tank 610 is formed with a treatment water inlet 619 for introducing the ozone water discharged from the ozone reaction tank 630 into the inside and the other side of the sewage supplied to the ozone generator 620 A sewage supply port 618 for supplying the water is formed, and the sewage discharge port 613 is disposed at a predetermined height on the treatment water tank 610 so that the sewage supplied over the set water level flows over the discharge tank 180 at the rear end or By discharging to the UV disinfection facility 190 side, it is possible to increase the stagnation time of the sewage and ozone water in the treatment tank (610).

In addition, as shown in FIG. 2, the treatment tank 610 has a plurality of lower partitions 614a extending upwardly from a lower end in an inner space and a plurality of upper partitions 614b extending downwardly from an upper end thereof. Alternately disposed at the top and the top to form a plurality of mixing tank 615 to mix the ozone water and sewage, to maximize the stagnation time of the reaction between ozone and sewage and flow up and down while passing through each partition (614a, 614b) As it is transported, it can increase the mixing efficiency of ozone water and sewage.

The ozone gas (O ₃ gas) degassed in the ozone reactor 630 is connected to the air flow meter of the bubble generator 420 through a pipe to reuse the remaining ozone to increase the treatment efficiency and to process the remaining ozone.

In addition, the treatment tank 610 is provided with an aeration unit (Bubble Generator, 616) for supplying bubbles into the innermost mixing tank 615 of the sewage flow direction of the plurality of mixing tank 615, the outermost The end mixing tank 615 serves as an aeration tank for degassing the ozone contained in the treated water by the bubbles supplied from the aeration unit 616, the upper portion of the treated water tank 610 for discharging the degassed ozone to the outside A first gas discharge pipe 617 is provided. Ozone dissolved in the sewage may be degassed by the air injected by the aeration of the aeration unit 616 and the aeration tank, and may be discharged through the first gas discharge pipe 617. Can be prevented in advance.

In addition, a second gas discharge pipe 637 for discharging ozone inside to the outside is formed at an upper end of the ozone reaction tank 630 to be described later, and the aeration part 616 includes the first gas discharge pipe 617 and the second. Ozone production amount and ozone can be recycled by forming bubbles for injecting into the last mixing tank 615 using ozone gas supplied in connection with one or more gas discharge pipes of the gas discharge pipes 637. The load on the disposal facility can be minimized.

The ozone generator (Ozonizer, 620) is a device for supplying ozone necessary for the ozone reaction, is connected to the sewage supply port 618 provided on the other side of the treatment tank 610 receives the sewage in the treatment tank 610 Ozone is generated and dissolved in the supplied sewage and discharged to the ozone reaction tank 630.

Here, a circulation pump 650 is provided between the sewage supply port 618 and the ozone generator 620 to provide a flow pressure to the sewage to be circulated and supplied, and the circulation pump 650 is illustrated in FIG. 1. As described above, a plurality of circulation pumps are connected to branch to the same supply line, and when a malfunction occurs in one circulation pump, it is preferable to operate the other circulation pump to prevent the sewage treatment from being interrupted.

The ozone reaction tank 630 is a water tank for purifying by the ozone reaction by contacting the supplied sewage and ozone, a watertight inner space is formed and the lower ozone water is connected to the ozone generator 620 to supply the ozone water Inlet 631 is formed, the inner partition is arranged horizontally in the horizontal partition partitioning the inner space into a plurality of contact tanks (633a to 633c) divided up and down, and the vertically-opened communication hole 634 in the center partition wall A portion 632 is provided, and a treatment water discharge port 635 is connected to one side of the treatment tank 610 and the treatment water supply pipe 640 to supply ozone-treated treatment water to the treatment tank 610. do.

Here, the ozone reaction tank 630, the inner space is partitioned up and down by the partition portion 632, the high concentration contact tank 633a for removing the organic substances and BOD contained in the sewage due to the supersaturation of ozone in the lower portion The lower concentration contact tank 633b for removing bacteria, odors and colors contained in the sewage is formed by dissolving less ozone than the high concentration contact tank 633a.

In addition, the partition wall portion 632 is provided with a lower partition wall 614a and an upper partition wall 614b spaced up and down in the interior space, and placed between the high concentration contact tank 633a and the low concentration contact tank 633b. One or more concentration compartment tanks 633c are formed to maintain the ozone concentrations of the

contact baths

633a and 633b.

Here, when the high concentration contacting tank 633a and the low concentration contacting tank 633b are arranged in close contact with each other up and down, the ozone concentration of the low concentration contacting tank 633b may be rapidly higher than an appropriate value. In addition, the concentration of the ozone water located in the upper portion of the high concentration contact tank 633a may be smaller than an appropriate value due to the difference in concentration.

However, since the concentration compartment 633c is disposed between the high concentration contacting tank 633a and the low concentration contacting tank 633b to perform a function of mitigating a sudden change in concentration, the high concentration contacting tank 633a and the low concentration contacting tank 633b. Each can maintain an appropriate ozone concentration.

In addition, the treatment water discharge port 635 disposed in the low concentration contact tank 633b is disposed at a predetermined height in the ozone reaction tank 630 to process the water through the treatment water supply pipe 640 while the treated water is supplied over the set water level. It is to be discharged to the treated water inlet 619 side of the water tank 610, thereby increasing the reaction time of ozone and sewage in the ozone reaction tank 630.

The sewage discharge port 613 is disposed at a predetermined height on the treatment tank 610 to be discharged to the discharge tank 180 or UV disinfection facility 190 side of the rear end while the sewage supplied over the set water level is overflowed.

In the case of the ozone reaction tank 630 in which the ozone reaction is performed by the respective configurations and functions of the ozone treatment apparatus 600 according to the preferred embodiment of the present invention as described above, the partition wall portion 632 disposed therein is provided therein. As the space is partitioned up and down, ozone is supersaturated in the lower portion, and a high concentration contact tank 633a is formed to remove organic substances and BOD contained in the sewage, and less ozone is dissolved in the upper portion than the high concentration contact tank 633a. Since the low concentration contact tank 633b is formed to remove bacteria, odors and colors contained in the sewage, it is possible to maximize the purification efficiency of the sewage by ozone reaction and at the same time minimize the system construction cost and equipment specifications.

On the other hand, the high speed agglomeration apparatus 200 by swirling the sewage introduced into the first agglomeration chamber 210 to replace the function of the rapid stirring tank completely dissolves the flocculant and the flocculant and the suspended solids of the sewage dissolved in a short time It is a purification device to maximize the cohesion efficiency of the liver.

The high speed aggregator 200 is disposed at the rear end of the flow control tank 110 as shown in FIG. 1 and is formed with a watertight inner space 211 as shown in FIG. 3 and has a sewage inlet 212 and a sewage outlet. Rotating shaft 220 having a first agglomeration chamber 210 provided with 213 and a coagulant discharge port 221 discharging the coagulant supplied from the outside and vertically rotatably disposed in the inner space 211. And, it is attached to the circumference of the rotating shaft 220 includes a stirring blade 230 for rotating together to form a vortex.

Here, the first agglomeration chamber 210 is formed in a tank type in which the inside is sealed so that the odor of the introduced sewage does not leak to the outside, and is preferably made of a material having excellent corrosion resistance and wear resistance, such as sus.

In addition, the sewage flowing into the lower portion of the first agglomeration chamber 210 is swirled and swirled in the chamber by the stirring blade unit 230, and at the same time, a coagulant is supplied through the coagulant discharge port 221 to the coagulant dissolved in the process. The flocculated suspended solids are discharged to the sewage outlet 213 together with the sewage, and the sewage flowing into the sewage inlet 212 may be added in a mixed form with a coagulant to double the coagulation effect.

In addition, the rotating shaft 220 is a rotating shaft for rotating the stirring blade 230 for swirling the introduced sewage and flocculant in the second agglomeration chamber 210, the coagulant supplied therein the flocculant discharge port 221 Coagulant conveying pipe 222 for conveying up to) is arranged extending up and down.

In addition, the rotation shaft 220 is rotatably supported by a rotation means such as a bearing on the upper end of the first agglomeration chamber 210, the driving motor for rotating the drive according to the control signal of the control unit 500 to be described later Receives rotational force from 280 to rotate. In addition, the driving motor 280 may be electrically connected to an inverter (not shown) to control the rotation speed and the rotation direction of the rotating shaft 220 by adjusting the frequency of the driving power through the inverter.

In addition, the stirring blade 230 is the first stirring blade 231 and the first stirring on the rotating shaft 220, the plurality of radially arranged in the upper position of the rotary shaft 220 in the first agglomeration chamber (210) A plurality of stirring blades 232 are arranged radially in the lower position of the wing 231, each stirring blades (231, 232) are formed in the side opening through-holes (232, 234), each stirring blade (231, 232) By dividing into the portion (wing portion) and the non-pressurizing portion (hole portion) to pressurized sewage introduced by each star can maximize the vortex formation due to the rotation of the stirring blade 230.

Here, the high speed aggregator 200 is formed in an upright disposed plate shape, one side is fixedly mounted on the inner wall of the first agglomeration chamber 210 and a plurality of the agglomerates are spaced apart along the inner wall circumference of the first agglomeration chamber 210. The water barrier plate 240 may be further included. The water blocking plate 240 may form a vortex in a direction opposite to the swirling vortex direction by friction with the sewage rotating together in the first agglomeration chamber 210 according to the rotation of the stirring blade 230. Cohesion efficiency can be further increased.

In addition, the sewage inlet 212 of the high speed aggregator 200 is connected to the other end of the sewage supply pipe 250, one end of which is connected to the flow control tank 110, the high speed aggregator 200 is the sewage supply pipe or sewage It may further include a sewage sensor 260 for measuring the concentration of the sewage is disposed disposed in the inlet.

In addition, the control unit 500 for centrally controlling the operation of the water treatment system adjusts the supply amount of the flocculant supplied to the high speed aggregator 200 according to the detection signal of the sewage sensor 260, the appropriate amount required to flocculate the suspended matter While the coagulant can be added, the amount of coagulant can be minimized.

In addition, the high speed agglomeration apparatus 200 is connected to the upper end of the rotary shaft 220, the rotary joint 270 for supplying the coagulant to the upper end of the coagulant feed pipe 222 extending up and down inside the rotating shaft 220 is rotated ) Can be further included, so that only the corresponding parts can be replaced when fixing occurs, which makes maintenance easy.

In addition, as shown in FIG. 1, the flow rate adjusting tank 110 and the coagulant tank 120 are disposed at the front end of the high-speed aggregator 200 so that the sewage to be purified and the coagulant required to coagulate the sewage can be supplied. In the supply line, a coagulant pump 121 driven according to a control signal of the controller 500 may be disposed to control a supply amount of the coagulant supplied to the high speed agglomeration device 200.

On the other hand, the non-powered flocculation device 300 is a purification device for replacing the function of the conventional mechanical slow stirring tank, and partitions the interior of the second flocculation chamber 310 into a plurality of flocculation tanks 321 divided up and down, and each As the sewage of the coagulation tank 321 flows into the inside of the adjacent coagulation tank 321 disposed below by the drop, the structure is configured to generate a circulating water stream. It is circulated inside by water flow, and contacts with each other to aggregate to a certain size.

To this end, as shown in FIG. 4, a watertight internal space is formed, and a sewage inlet 311 connected to the sewage outlet of the high speed aggregating device 200 is formed at the upper portion thereof, and a sewage outlet 312 is formed at the lower portion thereof. An agglomeration chamber 310 and a plurality of agglomeration tanks 321 disposed in the transverse direction inside the second agglomeration chamber 310 and divided into a plurality of agglomeration tanks 321 divided up and down, and having a communication hole 322 opened up and down in the center portion. ) Is formed partition wall 320, and the turbulence preventing plate 330 horizontally disposed in the lower position of each communication hole (322).

Here, the second agglomeration chamber 310 is formed in a closed tank type so that the odor of the introduced sewage does not leak to the outside, and is made of a material having excellent corrosion resistance and abrasion resistance such as sus.

In addition, in the drawing, the three agglomeration tanks 321 are illustrated as being formed inside the chamber by the two partition walls 320, but one or three or more partition walls 320 are disposed so that two or four or more agglomeration tanks 321 are provided. May be formed. The sewage flowing into the sewage inlet 311 disposed at the upper end of the second agglomeration chamber 310 flows into the first agglomeration tank 321 partitioned by the first partition wall 320, and the sewage introduced into the communication hole 322. Is discharged to the second flocculation tank 321 through, the sewage introduced into the second flocculation tank 321 is discharged to the third flocculation tank 321 through the communication hole 322 and finally at the bottom of the second flocculation chamber 310 It is discharged to the outside through the formed sewage outlet 312.

As it is designed as a multi-stage agglomeration structure in which the sewage flows in and discharges from the upper portion, the sewage flowing into the upper portion of each agglomeration tank through the sewage inlet 311 or the communication hole 322 is directed downward by a drop in the central position. Falling water flow is formed, and the sewage that is in contact with the bottom surface of each flocculation tank 321 while falling falls along with the inner wall surface of the flocculation tank 321 while moving along the bottom surface and rises along the wall surface. By being formed, as shown in FIG. 3, the circulation water flows are generated at both sides of the central portion in each of the agglomeration tanks 321.

Accordingly, the suspended solids contained in the sewage introduced from the outside may be aggregated to have a lump form larger than the size when they are brought into contact with each other while being circulated together by the circulating water flow generated in the first coagulation tank 321. The suspended solids in the state becomes larger while passing through the second flocculation tank 321 and the third flocculation tank 321.

Here, as shown in the figure, the inclined portion 331 is formed to be inclined upward gradually toward the outside of the end circumference of the turbulence blocking plate 330, the inflow of sewage stagnated on the turbulence blocking plate 330 It can increase the time and increase the drop width to further increase the cohesive efficiency.

In addition, an inclined surface 323 that is inclined gradually toward the outside toward the outside of the partition 320 is formed, or the partition 320 is formed in an inclined shape that gradually increases toward the outside from the center portion. The sludge may be guided to move toward the communication hole 322 without stagnation in the upper surface of the partition wall 320.

In addition, a pressure control pipe 340 for discharging air in the inner space to the outside of the second agglomeration chamber 310 is disposed, the control unit 500 is the internal pressure of the second agglomeration chamber 310 When the set value is exceeded, the pressure regulating pipe 340 is driven to adjust to maintain the set value.

In addition, a sewage discharge pipe 360 is connected between the sewage discharge port 312 and the sewage inlet 412 of the scum skimmer 400, and the sewage discharge pipe 360 discharges the sewage discharged from the lower discharge port 312. By forming a bent portion that is bent in a direction opposite to the direction is discharged through the sewage discharge port (312) while hitting the inner wall of the sewage discharge pipe 360 can minimize the separation of the flocculation state of the suspended solids contained in the sewage .

And, as shown in Figure 4, the sewage inlet 412 is equipped with a spray nozzle 419 for injecting the sewage flow into the interior and one injection nozzle 419 is shown in the drawing, but a plurality of injection nozzles ( 419 are spaced apart in the width direction of the bubble reaction tank 416 and each injection nozzle 419 is connected to the sewage inlet 412 and the branch pipe, respectively, to uniformly inject sewage into the bubble reaction tank 416 as a whole. Can be.

On the other hand, the scheme skimmer 400 is a short time by removing the floating suspended matter particles in a state that maintains a saturated bubble state by limiting the temporary flow of bubbles step by step through the partition structure installed in multiple stages with respect to the flow direction of the lower portion In addition to purifying treatment, it is possible to minimize suspended substances discharged in the treated water.

To this end, the skimmer skimmer 400 is formed with a tight inner space, and one side is formed with a sewage inlet 412 connected to the sewage discharge port 312 of the non-powered flocculation device 300, the other side treated water outlet 413 And a plurality of lower bulkheads 414 extending upwardly from the bottom and a plurality of upper partitions 415 extending downwardly from the top are alternately disposed at the bottom and the top of the plurality of bubble reaction tanks. Reaction chamber 410 to form a 416, and the bubble generator 420 to generate a micro or nano-sized microbubbles to supply to the internal space.

Here, the reaction chamber 410 is a chamber that provides a reaction space for floating by removing the suspended substances contained in the sewage while the sewage and microbubbles are supplied to the inside, and a predetermined internal space in which floating separation is formed is formed. The sewage discharged from the non-powered flocculation device 300 is supplied to the sewage inlet 412 and the purified sewage is discharged to the outside through the treated water discharge port 413 disposed at the other side.

In addition, in the drawing, three bubble reactors 416 are formed by a partition wall structure in which three lower partition walls 414 and three upper partition walls 415 are alternately arranged in the reaction chamber 410 with respect to the flow direction of sewage. Although not limited thereto, two bubble reaction tanks or four or more bubble reaction tanks may be formed in consideration of the purification efficiency according to the concentration of suspended solids contained in the sewage and the supply of fine bubbles.

In addition, by controlling the inflow pump to efficiently control the inflow pump for efficient purification of sewage, the throughput can be efficiently controlled by quantitative inflow of sewage and quantitative injection of flocculant, and the flotation efficiency can be increased by maximizing flocculation.

In addition, the sewage introduced through the sewage inlet 412 may include suspended solids of a size that is not injured by a microbubble. In the case of suspended solids of this size, when the time passes, the sediment is deposited on the lower side to the outside. May not be discharged. To this end, an outlet 418 for discharging the precipitated sludge is formed at the bottom of each bubble reaction tank 416, and each bubble reaction tank 416 is preferably formed with an inclined surface such that the sludge flows to the discharge port 418. Do. Here, in order to smoothly remove the sludge, slanted surfaces of 45 degrees or more may be provided on both sides of the discharge port 418 to allow rapid sludge discharge.

The use of the microbubble has various advantages. First, the residence time (injury time) is shorter than the existing precipitation method (sedimentation time), so it is excellent in responding to the rapid increase in the amount of processing and the required area required for installation. This is because the flotation method uses a large amount of flocculant to form larger suspended matter particles for sedimentation, whereas the flotation method can achieve sufficient flotation efficiency even with a smaller suspended particle size. In addition, the flotation method by the microbubbles has excellent interfacial adsorption due to the use of micro or nano-sized microbubbles having a diameter of 30 or less than the air bubble type millibubu bubble size, and has a high bubble adhesion frequency with suspended solid particles. It is possible to remove suspended solids particles of 2mm or less without using them, and the use of a small amount of flocculant is required to ensure a cleaner treated water quality. Therefore, the amount of flocculant used is less than that of the precipitation method and the existing air flotation method.

The second feature is that in the case of microbubbles, the bubble rising speed in water is about 1 to 3mm / min, and it stays in water for about 1 hour for as long as 15 minutes. There is an advantage.

The third feature is that in the case of microbubbles (microbubbles or nanobubbles), the bubble surface area is large, so the oxygen dissolution rate is excellent, and the residual microbubbles are completely dissolved in water after flotation and oversaturated the dissolved oxygen (DO) concentration in the treated water. It has the advantage that it can minimize the effects of aquatic ecosystems when treated water flows into the water.

The fourth feature is that in the case of microbubbles, it generates OH ^* groups by the crushing effect of bubbles, and has the function of removing organic substances, removing odors and sterilization, reducing odors in treated water and sludge, and sterilizing E. coli. Has an effect.

As shown in FIG. 5, the scum skimmer 400 is disposed on an upper portion of the reaction chamber 410, and the outer surface of the scum skimmer 400 rotates a rotating chain 432 equipped with a plurality of skimmers 431. Floating sludge discharge portion 430 to scrape off the floating sludge on the top of each bubble reaction tank 416 by the bubble to discharge to the outside. Here, the rotation chain 432 is spaced apart on both sides of the reaction chamber 410 to rotate the skimmer 431 while rotating by a drive motor (not shown) in accordance with the control signal of the control unit 500.

In addition, as shown in the drawing, the upper portion of the upper partition 415 has a rounded concave hemispherical shape and a round part 440 for guiding the transport of the suspended solids conveyed from the upper side of the bubble reaction tank 416 adjacent by the skimmer 431. ) Is arranged to minimize the phenomenon that the floating sludge that is moved laterally while being pressed by the skimmer 431 is caught on the pointed top of the upper partition 415.

In addition, the upper side of one side of the reaction chamber 410 is formed to protrude upward to contact the skimmer 431 pivoting at one side end position of the reaction chamber 410 to remove the sludge attached to the skimmer 431 Since the sludge removal unit 450 is disposed, the sludge is transferred to a state in which the sludge is buried on the surface, thereby minimizing the discharge of the sludge to the outside while approaching the bubble reaction tank 416 of the last stage.

In addition, the upper end of one side wall surface of the reaction chamber 410 is formed to be projected upwardly outwardly in contact with the surface of the skimmer 431 pivoting at one side end position of the reaction chamber 410, the moisture on the skimmer 431 Moisture removal unit 450 to scrape off the arrangement is disposed, it is possible to prevent the unnecessary discharge of water to the sludge discharge port 411 and thus can discharge the concentrated sludge.

The sludge removal part is formed at the upper end of the outer sidewall of the sludge discharge port 411 to be inclined upwardly toward the floating sludge discharge part 430 to contact the surface of the skimmer 431 that is turning and remove the remaining sludge on the skimmer 431. It is possible to prevent the residual sludge is re-introduced into the bubble reaction tank (416).

In addition, the upper end of the upper partition 415 disposed at the rearmost end of the plurality of upper partitions 415 extends upward in a relatively longer length than the turning height of the skimmer 431 turning at the distal position of the rotating chain 432 Sludge leakage prevention wear 490 is formed and is bent roundly along the turning curve of the skimmer 431, so that the skimmer 431 is rotated at the end of the rotating chain 432 is adsorbed to the skimmer 431 Foreign substances such as sludge may be introduced into the treated water outlet 413 to be discharged together with the sewage.

And, as shown in Figure 5, the reaction chamber 410 is formed a microbubble inlet 421 for injecting the microbubble supplied to one side into the inner space, the other side passes each bubble reaction tank 416 And a treatment water supply port 424 for discharging a portion of the treatment water moving toward the treatment water discharge port 413, and the bubble generator 420 includes the treatment water supply port 424 and the fine bubble inlet 421. The microbubbles are generated by the treated water disposed and supplied on the treated water transfer line 470 connected therebetween, and the generated microbubbles are discharged to the microbubble inlet 421.

Here, the scum skimmer 400 is disposed on the treated water transfer line 470 between the bubble generator 420 and the treated water supply port 424 to remove foreign substances contained in the treated water supplied to the bubble generator 420. It includes a plurality of strainers 460 to remove, each strainer 460 is connected to the treated water transfer line 470 by a different branch line 471.

In addition, a separate solenoid valve 480 is provided in each of the separation lines 471 to open and close the pipe line according to a control signal, and the control unit 500 according to the digital signal value of the pressure gauge 422 provided in the bubble generator 420. The open / close state of each sole valve 480 can be adjusted.

Therefore, when the strainer 460 of any one of the two strainers 460 increases or decreases the bubble pressure above the reference value, the solenoid valve 480 of the corresponding strainer 460 is automatically shut off and the other is automatically detected. The sole valve 480 of one strainer 460 may be opened to allow the microbubble to be supplied through the new strainer 460 having no foreign matter. For example, when the digital signal value of the pressure gauge 422 is out of the range of 8 to 10 Kg / cm 2, the strainer 460 currently used is replaced by the sole valve 480 to another strainer 460.

In addition, it is preferable that the opening and closing cover 462 is provided on the upper portion of the strainer 480 to easily replace or wash the strainer 461 therein.

The bubble generator 420 generates a giant bubble by mixing with the circulating water, maintains a high pressure state using a pump, and arranges a split device at the rear stage to decompose it to a smaller size while passing it. It is possible to form an ultra fine bubble smaller than a fine bubble, and it is preferable to supply such ultra fine bubbles so that a plurality of ultra fine bubbles can be attached in the form of completely enclosing suspended solids to further increase the efficiency of injury and removal. Do.

As described above, in the water treatment system according to the preferred embodiment of the present invention, the high speed agglomeration apparatus 200, the non-powered flocculation apparatus 300, and the scheme skimmer 400 are disposed in a stepwise direction along the treatment transport direction of the sewage, and the high speed agglomeration is performed. Through the device 200 and the non-powered flocculation device 300, the floating material can be aggregated in a short time to the extent that it can be floated by the microbubble through the scheme skimmer 400, and the floating efficiency is increased by the microbubble. The treated water can be discharged to the outside to minimize the substance.

1, a sewage supply line for supplying a part of the purified sewage to the bubble generator 420 is provided at one side of the reaction chamber 410 of the scheme skimmer 400, and the bubble generator 420 is provided. Microbubbles are formed in the supplied sewage and are supplied into the reaction chamber 410. In addition, a conveying flowmeter 140 is disposed on the sewage supply line to measure and adjust the supply amount of the microbubbles, and the precipitated sludge discharged through the discharge port 418 is discharged and stored in the sludge storage tank 150 disposed at the rear end. do.

In addition, a treatment water tank 150 is connected to the treatment water outlet 413 to store purified water, and a treatment water tank 610 and an ozone generator 620 are disposed at a rear end of the treatment water tank 150 for treatment. The water can be sterilized and finally discharged to the discharge tank 180 or the UV disinfection facility 190 via the flow meter 160.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto and is intended by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

Claims

A water treatment inlet 610 in which a watertight inlet 612 is formed at one side and a sewage inlet 612 is formed at one side thereof, and a sewage outlet 613 at which ozone-treated sewage is discharged;

An ozone generator 620 connected to the other side of the treatment tank 610 to receive sewage and to generate ozone to dissolve and discharge the supplied sewage; And

A watertight internal space is formed and an ozone water inlet 631 is connected to the ozone generator 620 to supply ozone water, and a plurality of contact tanks are disposed in the horizontal direction to divide the internal space up and down. A partition wall portion 632 is formed, which is divided into 633a to 633c and has a communication hole 634 opened up and down, and is connected to one side of the treatment tank 610 and the treatment water supply pipe 640 at an upper portion to treat ozone. And an ozone reactor (630) having a treated water outlet (635) for supplying the treated water to the treated water tank (610).
The method according to claim 1,

The ozone reaction tank 630 has a high concentration contact tank 633a for removing organic substances and BOD contained in the sewage due to oversaturation of ozone in the lower portion of the ozone reaction tank 632 by partitioning the inner space up and down. In the upper portion, the ozone is less dissolved than the high concentration contact tank 633a to form a low concentration contact tank 633b for removing bacteria, odors and colors contained in the sewage.

The partition wall portion 632 is provided with a lower partition wall 614a and an upper partition wall 614b spaced up and down in the inner space, and the two contact tanks between the high concentration contact tank 633a and the low concentration contact tank 633b. And at least one concentration compartment tank (633c) for maintaining the ozone concentration of (633a, 633b).
The method according to claim 1,

The treatment tank 610 has a plurality of lower partitions 614a extending upwardly from a lower end and an upper partition 614b extending downwards from an upper end in an inner space, and are alternately disposed at a lower portion and an upper portion thereof. Ozone treatment apparatus characterized in that a plurality of mixing tanks (615) for mixing the sewage is formed.
The method according to claim 3,

The treatment tank 610,

Further comprising an aeration portion 616 for supplying bubbles into the innermost end of the mixing tank 615 in the sewage flow direction of the plurality of mixing tank 615,

The final mixing tank 615 serves as an aeration tank for degassing ozone contained in the treated water by the bubbles supplied from the aeration unit 616, the first gas for discharging the degassed ozone to the outside Ozone treatment device characterized in that the discharge pipe (617) is provided.
The method according to claim 4,

A second gas discharge pipe 637 for discharging ozone inside to the outside is formed at the upper end of the ozone reaction tank 630,

The aeration unit 616 is used for injecting into the final mixing tank 615 using ozone gas supplied in connection with one or more gas discharge pipes of the first gas discharge pipe 617 and the second gas discharge pipe 637. An ozone treatment apparatus, which forms bubbles.
A first agglomeration chamber 210 having a watertight inner space 211 formed therein and a sewage inlet 212 and a sewage discharge port 213 respectively, and rotatably vertically disposed in the inner space 211 and supplied from the outside. High speed including a rotating shaft 220 is formed with a coagulant discharge port 221 for discharging the coagulant into the inner space 211, and a stirring blade portion 230 is mounted around the rotary shaft 220 to rotate together to form a vortex Agglomeration apparatus 200; And

Water treatment in which a watertight inlet 612 is formed, on which one side is formed, a sewage inlet 612 is supplied to the sewage discharged from the high speed aggregator 200, and the other side is formed with a sewage outlet 613 to discharge the sewage treated by ozone. 610 and an ozone generator 620 connected to the other side of the treatment tank 610 to receive sewage and dissolve and discharge ozone by dissolving it in the supplied sewage, and a watertight inner space is formed below the ozone generator. An ozone water inlet 631 is formed to be connected to the 620 to supply ozone water, and is disposed in the horizontal direction and partitions the internal space into a plurality of contact tanks 633a to 633c which are divided into upper and lower sides, and communicates with the upper and lower openings. The partition wall portion 632 having a ball 634 is provided and is connected to one side of the treatment tank 610 and the treatment water supply pipe 640 at the upper portion to supply ozonated treatment water to the treatment tank 610. Outlet (63 5) an ozone treatment device (600) comprising an ozone reaction tank (630) formed.
The method according to claim 6,

A second agglomeration chamber 310 formed with a tight inner space and a sewage inlet 311 connected to the sewage outlet 213 of the high speed aggregator 200 and a sewage outlet 312 formed at the bottom; The partition wall 320 is disposed in the second agglomeration chamber 310 in a transverse direction and partitions an inner space into a plurality of agglomeration tanks 321 divided up and down, and has a communication hole 322 open up and down at a central portion thereof. And a non-powered flocculation apparatus 300 including a turbulence preventing plate 330 horizontally disposed at a lower position of each communication hole 322; And

A watertight inlet is formed and one side is formed with a sewage inlet 412 connected to the sewage outlet 312 of the non-powered flocculation device 300, and a treated water outlet 413 is formed at the other side of the inner space. Reaction chamber 410 for forming a plurality of bubble reaction tank 416 while the plurality of lower partitions 414 extending in the upper direction and the plurality of upper partitions 415 extending in the lower direction from the top are alternately disposed at the lower and upper portions. And a scum skimmer (400) comprising a bubble generator (420) to generate microbubbles of a micro or nano size and supply them to the internal space.