KR100894646B1 - Dissolved air floatation tank - Google Patents

Abstract

An automatic continuous filtration apparatus-attached dissolved air flotation tank is provided to remove foreign materials in the tank by using dissolved air circulating water and to filter the minute foreign materials secondly with a filter media. An automatic continuous filtration apparatus-attached dissolved air flotation tank(500) includes a circular auxiliary tank, a circular flotation tank, a scum discharge pipe, a scum remover(532), a plurality of process baths(540), a filter media, a cylindrical filter media separator(561), a rotary flow guiding inflow part, a filter media separating inner pipe, a cleaning water discharge pipe(565), a connecting pipe(553) a discharge direction changer(566), and a peaked hat-shaped filter media scattering prevention cover. The scattering prevention cover is installed on an inner lower part of a filter medium separating unit.

Description

Dissolved air pressurized floatation tank with automatic continuous filtration device {DISSOLVED AIR FLOATATION TANK}

The present invention relates to an automatic continuous filtration device attached dissolved air pressurization tank, and more specifically, to remove the foreign matter primarily from the flotation tank using the dissolved air circulating water, and also to remove the fine foreign matter from the filter medium. The present invention relates to an automatic continuous air filter attached type dissolved air pressurization tank, which is capable of performing the second process simultaneously by using a single device.

In general, pressurized flotation tanks contain chemicals (alum, etc.) in raw water and stir constantly to form flocs combined with foreign substances remaining in the water, and the floc formed raw water flows into flotation tanks to generate bubbles from dissolved air circulating water in the flotation tank. When combined with, the floc rises to the upper part and the water in the lower part is a water treatment device.

In addition, the filtering device refers to a device for removing the floating matter remaining in the water by passing the treated water first treated in the pressure flotation tank through a filter medium such as sand.

However, the conventional pressure flotation tank and filtration apparatus are divided into their respective processes, but in the present invention, the pressure flotation tank and the filtration apparatus are integrated into one process to perform all of them in one process. By attaching an automatic continuous filtration device, it is a facility that simplifies the processing process to handle both processes in one process and maximizes the treatment effect by using opposite processes of flotation and sedimentation. The application of solid-state air flotation equipment ensures that microorganisms, such as suspended solids, chromaticity, precursors, and algae, which remain in the raw water, which are the characteristics of the floating tank, are well treated and maintain a constant treatment efficiency, so that the operation of the lower filtration process is low and the operation is smooth. Filter papers caused by microorganisms such as algae It can prevent resolution.

In addition, the present technology can continuously filter the filtration process continuously, it is possible to continuously withdraw the treated water even during the filtration process, and can increase the treatment efficiency by using a variety of filter media according to the conditions of the raw water. Therefore, if the present invention is applied to the lake water or purified water treatment system, the treatment process can be simplified, and the water quality can be obtained better than the existing sedimentation system (2 to 3 hours) despite the short treatment time (15 to 20 minutes). .

In addition, this technology does not need to have a large installation area, and can reduce construction and maintenance costs.

However, the conventional pressure flotation tank is separated from the floating tank and the filter paper, so that each device is installed separately, so a large area is required, and a storage tank, an input pump, an automatic valve, etc. must be installed as a medium connecting the process between the floating tank and the filter paper. The management is complicated, and each one has to be managed separately, and even if only one of the two processes has a problem, both operations are shut down. But above all, the problem is that the filtration process has to be stopped when the filter paper is washed. The flotation tank had a lot of difficulties in connecting the two processes in that a constant treatment water can be obtained only after continuous operation. In addition, the amount of washing water discharged is significant, but it is pointed out as a cost waste that cannot be recycled.

Meanwhile, as a related art related to the present invention, Korean Patent Registration No. 10-0294992, Domestic Patent Registration No. 10-0321800, Domestic Utility Model Publication No. 92-5416, and the like are disclosed. Seen as unified.

The present invention has been made in order to solve the above problems, by incorporating a filter medium (filtering device) in the floating tank, the automatic continuous filtration device attached type that allows each function of the floating tank and the filter medium to be achieved in one device It is to provide a dissolved air pressurization tank.

Another technical problem to be achieved by the present invention is to provide an automatic continuous filtration device-type dissolved air pressurization tank for a continuous treatment process even in the process of washing the filter medium.

Another technical problem to be achieved by the present invention is the automatic continuous filtration device to solve the floating and sediment at the same time because the discharge of the treated water through the filter medium in the bottom of the flotation tank can achieve the effects of flotation and precipitation and filtration at the same time The present invention provides an attached dissolved air pressurization tank.

Another technical problem to be achieved by the present invention is to recycle more than about 80% of the filter medium that can be lost in the washing process, automatic continuous filter attached dissolved air that can continuously withdraw the treated water even during continuous filtration washing It is to provide a pressurization levitation.

Another technical problem to be achieved by the present invention is to combine the above-mentioned pressure levitation tank with a water purification system to simplify the water purification system process and to reduce the installation area and to prevent the blockage of sand filter paper and blockage of the filter paper as a disadvantage of the existing sedimentation tank. The present invention provides an automatic continuous filtration device-mounted dissolved air pressurization tank.

In order to solve the above problems, the present invention, respectively, is supplied with the dissolved air circulation water generating the floc formed raw water and bubbles and floating the floc by using the bubbles of the dissolved air circulation water to separate the raw water into flocs and treated water A circular auxiliary tank 510, a circular floating tank 520 surrounding the auxiliary tank 510, scum outflow pipe 531 installed in the center of the auxiliary tank 510, the floating tank 520 A scum removing device 532 provided at one side upper portion of the auxiliary tank 510 to filter the scum that floats from the auxiliary tank 510 and discharge the scum to the scum outflow pipe 531, and a circumferential surface between the floating tank 520 and the auxiliary tank 510. A plurality of treatment tanks 540, which are formed in a partition along the side and receive treatment water separated from the auxiliary tank 510, are respectively installed in the treatment tank 540 and are supplied to the treatment tank 540. Filter out foreign substances in the water Filter material 541, the treatment water discharge pipe 542 which is respectively installed on the bottom surface of the treatment tank 540, is provided on one side upper portion of the floating tank 520 to be rotatable along the circumferential surface of the floating tank 520 The rotary table 551 is provided, the rotary table rotating means for rotating the rotary table 551, the lower side of the rotary table 551 is provided to be movable up and down when the state of the treatment tank 540 A washing chamber 552 for closing the upper surface, a washing chamber moving means 554 for moving the washing chamber 552 up and down, and a cylindrical filter medium separating device 561 provided in the up and down direction on the rotary table 551. ), A filter medium discharge valve 562 provided at a lower end of the filter medium separator 561 to open and close a lower end of the filter medium separator 561, and provided at an upper portion of the filter medium separator 561. Inside the wash water A rotating flow guide inlet portion 563 having a form of guiding the son to wash water flows along the inner circumferential surface of the filter medium separating device 561, one end of which is downward in the filter medium separating device 561. The inner pipe 564 for filter medium separation, one end of which is provided at the lower portion of the rotary flow guide inlet 563, and the other end of which is exposed to the outside of the filter medium separating device 561, and one end of the inner pipe for separating the filter medium. The washing water discharge pipe 565 which receives the washing water from the 564 and the other end is discharged to the scum outflow pipe 531, the inside of the washing chamber 552 and the inflow portion for rotating flow guide (564). And a connecting pipe 553 for connecting the 563.

In the above, the discharge direction changing device 566 for changing the discharge direction so that the washing water discharged from the washing water discharge pipe 565 can be discharged to any one of the auxiliary tank 510 and the scum outflow pipe 531. Is preferably provided in the washing water discharge pipe.

In the above, it is preferable that the filter medium shatterproof cover 567 of the solid form is provided in the inner lower portion of the filter medium separating device.

The present invention as described above achieves many effects as follows.

Firstly, the present invention has the effect of removing sludge and high-density foreign substances at the same time by injecting a filter medium in the floating tank.

Secondly, the present invention has the effect of preventing the clogging of the filter medium by foreign matter by cleaning the filter medium for a certain period.

Thirdly, even in the process of washing the filter medium has the effect of improving the workability by enabling the continuous treatment process of the treated water in other treatment tanks.

Fourth, it is possible to reduce the loss of the filter medium by reducing the filter medium by collecting the filter medium that is lost can be recycled again.

Fifth, the water purification system process is simplified, the installation area is small, and the disadvantage of the existing sedimentation tank has a synergistic effect to prevent clogging of the sand filter paper and blockage of the filter paper.

Hereinafter, the configuration and operation in detail based on the embodiment of the present invention.

Meanwhile, among the terms used in the present invention, raw water means water as a treatment target, such as waste water containing sludge, which is a scum, and floc refers to agglomerated sludge in a lump form by adding a specific chemical to the raw water. it means.

In addition, treated water means water that has undergone purification by removing sludge contained in raw water, and dissolved air circulating water refers to water in which dissolved air is mixed with a portion of the treated water, and finally, scum is floated on the surface of the water. It means floc.

Meanwhile, in the present invention, a valve, a motor, an air cylinder, or the like as the driving means may be automatically controlled, and this part may be easily understood without further explanation.

In addition, in the present invention, the pipe does not simply mean a pipe passage such as a pipe, but should be understood as a concept including a pump for inducing a flow of a fluid or a valve for opening or closing a flow of a fluid or adjusting a flow rate of a fluid. Whether or not the various pipes include a pump or a valve can be easily understood through the function of the pipe and can be appropriately applied, so detailed description thereof will be omitted.

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

1 is a front conceptual view of an automatic continuous filtration device-mounted dissolved air pressurization tank according to an embodiment of the present invention, FIG. 2 is a plan conceptual view of FIG. 1, and FIG. 3 is an operating state of the sand separating device in FIGS. 1 and 2. 4 is a longitudinal cross-sectional conceptual view of the sand separation apparatus of FIG. 3, FIG. 5 is a cross-sectional view taken along line AA of FIG. 4, and FIG. 6 is a plan view and a front view of a configuration for the discharge direction changing apparatus of FIG. 3. FIG. 7 is a process diagram of a water purification system using an automatic continuous filtration apparatus-type dissolved air pressurization tank according to an embodiment of the present invention.

As shown, the automatic continuous filtration device attached dissolved air pressurization tank 500 according to the present invention is an auxiliary tank 510, floating tank 520, scum removal device 532, treatment tank 540, washing Chamber 552 or the like.

The auxiliary tank 510 has a circular shape, and is supplied with raw water having floc and dissolved air circulating water including dissolved air generating bubbles, and floating flocs using the bubbles of the dissolved air circulating water to floc and process It is a device for separating water.

The auxiliary tank 510 is provided with a raw water inlet pipe 511. The raw water inlet pipe 511 is introduced into the auxiliary tank 510 the raw water in which the floc is formed through the slow mixing paper 400 of the water purification system. At this time, the outlet of the raw water inlet pipe 511 is formed to be inclined at a predetermined angle so that the incoming raw water rises causing the vortex in the auxiliary tank 510.

The auxiliary tank 510 is provided with a circulating water inlet pipe 512. The circulation water inlet pipe 512 introduces the dissolved air circulation water including the dissolved air into the auxiliary tank 510. Dissolved air circulating water discharged to the auxiliary tank 510 generates bubbles by using dissolved air, and the generated bubbles are formed in raw water introduced into the auxiliary tank 510 through the above-described raw water inlet pipe 511. It sticks to the floc, which floats it to the surface.

An injection nozzle 513 having a circular ring shape is installed at the front end of the circulation water inlet pipe 512, and the injection nozzle 513 is configured to supply dissolved air circulating water to the auxiliary tank 510 in a state located above the auxiliary tank 510. ), The floc of the raw water supplied to the auxiliary tank 510 collides with the bubbles of the circulating water so that it is easily floated to the upper part of the flotation tank 520, and the floc separated treatment water is the flotation tank. 520 remains at the bottom.

In the center of the auxiliary tank 510, scum outflow pipe 531 is installed in the vertical direction. The scum outflow pipe 531 discharges the scum filtered through the scum removal device 532 to the outside. The scum discharged to the scum outflow pipe 531 is stored in the scum storage tank 600 of the water purification system to be described later. The scum outflow pipe 531 has a funnel shape at the top thereof.

The floating tank 520 has a circular shape surrounding the auxiliary tank 510 and receives the floc and the treated water separated from the auxiliary tank 510. The floc supplied to the floatation tank 520 floats to the upper portion of the floatation tank 520 through the bubble, and the treated water is moved to the treatment tank 540 side of the floatation tank 520.

The scum removal device 532 is installed at one upper side of the floating tank 520 and the scum outflow pipe installed at the center of the auxiliary tank 510 to filter out the floe, that is, the scum that floated to the upper layer of the floating tank 520 ( 531).

In this embodiment, the scum removing device 532 is provided on the rotating table 551 to rotate along the circumferential surface of the floating tank 520 together with the rotating table 551.

The treatment tank 540 is a space partitioned between the auxiliary tank 510 and the floating tank 520 along a circumferential surface of the floating tank 520 with a partition about the auxiliary tank 510.

The treatment tank 540 is supplied with treated water from which flocs have been removed. The treatment tank 540 is divided into 17 sections in the flotation tank 520 by using a partition.

The filter medium 541 is installed in each treatment tank 540 partitioned into partitions, and is a means for filtering out fine foreign matter contained in the treated water supplied to the treatment tank 540. That is, even in the case of the floc removed, the sand or other dense foreign matters do not float and sink down, and the foreign matters are filtered out by the filter medium 541 through the treated water.

Treatment water discharge pipes 542 are installed on each bottom surface of the treatment tank 540. The treated water discharge pipe 542 discharges the treated water from which the foreign matter is filtered after passing through the filter medium 541. The treated water discharged to the treated water discharge pipe 542 is stored in the treated water tank 700 constituting the purified water system described later.

On the other hand, the treated water discharge pipe 542 serves not only to discharge the treated water to the outside, but also to the wash water flows into the treatment tank 540. This is described in detail in the description of the function of the cleaning chamber 552.

On the other hand, in the process of passing through the filter medium 541, the suspended solids and the high specific gravity precipitates which are not injured are removed by the filter medium 541 and accumulated in the upper layer of the filter medium 541. As time passes, the filter medium 541 In order to solve the problem, the filter medium 541 should be washed intermittently.

A cleaning chamber 552 or the like is provided for the cleaning.

In order to install the cleaning chamber 552, the rotary table 551 is rotatably provided along the circumferential surface of the floating tank 520 at one upper end of the floating tank 520.

The rotary table 551 may rotate along the circumferential surface of the floating tank 520 by a rotary table rotating means such as a motor.

The washing chamber 552 is provided below the rotary table 551.

The washing chamber 552 is provided to be rotatable up and down with respect to the rotary table 551 as well as the rotary table 551, and closes the upper surface of the treatment tank 540 in the lowered state.

To this end, the rotary table 551 is provided with two cleaning chamber moving means 554 such as an air cylinder, and the cleaning chamber 552 is moved up and down by driving the cleaning chamber moving means 554.

When the upper surface of the treatment tank 540 is covered by the lowering of the cleaning chamber 552, the treatment water is blocked from entering the filter medium 541 due to the cleaning chamber 552.

Of course, even at this time, only the filter medium 541 covered by the washing chamber 552 does not pass through the treated water, and the other filter medium 541 not covered by the washing chamber 552 passes through the treated water.

In this state, the external treatment water discharge pipe 701 connected to the treatment water discharge pipe 542 is blocked by a valve, etc., and the washing water is forcibly supplied from the external washing water supply pipe 702 to the treatment water discharge pipe 701 to filter the filter medium. 541 is cleaned.

In addition, when the filter medium 541 is washed, compressed air is forcibly supplied from the external compressed air supply pipe 901 to the treated water discharge pipe 701 to vortex suspended matter and sediment accumulated in the upper layer of the filter medium 541 to be turbid.

To this end, various valves and pumps are connected to the external pipes connected to each of the treatment tanks 540. In particular, these valves are switched with each other according to the treatment water discharge and the washing time. That is, the external pipes connected to each of the treatment tanks 540 include i) treated water discharge pipe 701, ii) washing water supply pipe 702, and compressed air supply pipe 901, and i) and ii) When one is closed, the valves and the pump linked thereto operate in such a way that the other is opened.

In this embodiment, the cleaning chamber 552 is moved downwards to one of the treatment tank 540 of the 17 treatment tank 540 divided into 17 sections divided into separate washing, and after the cleaning is completed is raised After the rotation by the rotation of the rotary table 551 to the next processing tank 540 is moved to move down and then repeat the process of washing the processing tank 540. Therefore, when the rotary table 551 completes two revolutions, the washing of all the processing tanks 540 is completed.

That is, when the washing signal comes in, the washing chamber 552 descends from the closest section to block the upper surface of the treatment tank 540. At this time, the treatment water discharge pipe 701 of the external pipe connected to the treatment tank 540. ) Is closed by a valve, and the washing water supply pipe 702 and the compressed air supply pipe 901 are opened among the external pipes connected to the treatment tank 540. That is, the treatment water discharge from the treatment water discharge pipe 542 is stopped, and the washing water and the compressed air are supplied to the treatment water discharge pipe 542 to wash the filter medium 541.

Such a filter medium 541 cleaning operation cycle is made for each treatment tank 540 individually, preferably one treatment tank adjacent to the treatment tank 540 when one treatment tank 540 cleaning is completed. In the state beyond 540, the cleaning chamber 552 is moved to the next treatment tank 540 so that the cleaning operation is performed so that when the cleaning chamber 552 rotates in two, the entire 17 treatment tanks 540 are divided. Allow the cleaning to complete. The treatment tank 540 corresponding to the remaining section that does not wash even while the treatment tank 540 is washed for each section allows the treatment water to be discharged through the treatment water discharge pipe 542 of the treatment tank 540. 540 to continuously remove the foreign matter contained in the treated water supplied.

Meanwhile, the treatment structure of the washing water flowing into the washing chamber 552 during the washing of the filter medium will be described.

The filter medium separating device 561 is fixed to the rotary table 551, and the filter medium separating device 561 is rotatably moved together with the rotating table 551.

The filter medium separating device 561 is provided in the vertical direction on the rotary table 551 in a cylindrical shape, and the filter medium separating device 561 is provided spaced apart from the washing chamber 552.

The lower end of the filter medium separating device 561 is provided with a filter medium discharge valve 562. The filter medium discharge valve 562 opens and closes the lower end of the filter medium separating device 561 to discharge filter medium such as sand accumulated on the filter medium discharge valve 562.

An inner lower portion of the filter medium separating device 561 is provided with an anti-fog filter cover 567.

The filter medium scattering cover 567 prevents the filter medium, such as sand, which is dropped from the upper portion and accumulated in the filter medium preventing cover 567 to be scattered again by the fluid flow on the filter medium preventing cover 567. .

The upper portion of the filter medium separating device 561 is provided with a rotary flow guide inlet 563.

The rotary flow guide inlet 563 receives a fluid, such as washing water, into the filter medium separating device 561, and has a shape for guiding the introduced fluid to rotate along the inner circumferential surface of the filter medium separating device 561. In the present embodiment, the rotary flow guide inlet 563 is in the form of a curved tube, but depending on the embodiment, a guide plate or the like may be attached.

The rotary flow guide inlet 563 is connected to the inside of the cleaning chamber 552 by a connecting pipe 553. That is, the washing water introduced into the washing chamber 552 is introduced into the rotating flow guide inlet 563 through the connecting pipe 553.

The connecting pipe 553 is connected to the washing chamber 552, one end of which is moved up and down with respect to the rotary table 551, and the other end is connected to the rotary flow guide inlet 563 fixed to the rotary table 551. Therefore, the connecting pipe 553 is preferably a flexible pipe. For example, piping using a flexible pipe or a swivel joint is preferable.

Therefore, the washing water introduced into the washing chamber 552 is introduced into the filter medium separating device 561 through the connecting pipe 553 through the rotary flow guide inlet 563.

On the other hand, the filter medium separating device 561 is provided with an internal pipe 564 for filter medium separation.

In the present embodiment, the inner pipe 564 for separating the filter medium is disposed in the vertical direction, and the lower end thereof is provided to be opened downward in the inside of the filter medium separating device 561, and the lower end thereof is an inlet 562 for rotating flow guide. It is provided in the lower part. The other end of the inner pipe 563 for separating the filter medium is exposed to the outside of the filter medium separating device 561.

Therefore, the washing water introduced into the rotary flow guide inlet 563 is rotated along the inner circumferential surface of the filter medium separating device 561, and after forming a flow path in a downward direction, the internal pipe 564 for separating the filter medium. It is discharged through the outside.

At this time, since the mass of the filter medium, such as sand, is relatively heavy, the filter medium falls downward while passing in a spiral flow near the inner circumferential surface of the filter medium separating device 561 by the action of centrifugal force, passing through the side of the filter medium preventing cover 567. It is gathered to the lower part of the shatterproof cover 567.

Therefore, almost no filter medium such as sand is discharged through the inner pipe 564 for separating the filter medium, so that the loss of the filter medium may be reduced.

Thereafter, the inner pipe 564 for separating the filter medium is connected to the pipe 565 for draining the washing water.

One end of the washing water discharge pipe 565 is connected to the inner pipe 564 for separating the filter medium, and the other end thereof is provided such that fluid such as washing water can be discharged to the scum outflow pipe 531. As shown, the washing water discharge pipe 565 does not need to be directly connected to the scum outflow pipe 531, and it is sufficient that only the washing water discharged may be provided at a position where the scum outflow pipe 531 may fall.

On the other hand, the discharge direction change device 566 is provided at the rear end of the washing water discharge pipe 565.

 The discharge direction changing device 566 is for changing the discharge direction so that the washing water discharged through the washing water discharge pipe 565 can be selectively discharged to any one of the floating tank 520 and scum outflow pipe 531. .

In this embodiment, the rear end of the washing water discharge pipe 565 is formed in a rectangular passage shape, an opening 565a is formed in the bottom surface of the rectangular passage shape, and rotated 90 ° to open and close the opening 565a. The discharge direction change device 566 is implemented by the rotating plate 566a and the rotating motor 566b for rotating the rotating plate 566a, but this is only an example and the present invention is not limited thereto.

Therefore, when the rotating plate 566a is rotated and written vertically in the drawing, the washing water falls through the opening 565a and is introduced into the auxiliary tank 510. When the rotating plate 566b is laid horizontally on the drawing, the opening 565a is rotated. To prevent the washing water is introduced into the scum outflow pipe (531).

In this way, the filter medium separating device 561 collects only the filter medium 541 so that the filter medium 541 is washed with the foreign substances in the washing process and is not lost. Only the foreign substances of the washing water and the washing water are discharged through the pipe 565 for washing water discharge. Discharged. In addition, four washes (80%) are discharged into the auxiliary tank 510 by the discharge direction change device 566 to be recycled after being washed five times based on the number of washings discharged, and only once (20%) is used. Through the scum outflow pipe 531 to be discharged to the outside with the scum.

On the other hand, the filter medium 541 collected in the filter medium separating device 561 is the filter medium discharge valve 562 is opened after the cleaning process is completed, the filter medium 541 is lowered to the bottom.

At this time, the position of the filter medium discharge valve 562 is preferably positioned above the treatment tank 540 adjacent to the treatment tank 540 in which the washing process is performed.

Therefore, the filter medium 541 falling from the filter medium separating device 561 is introduced into the processing tank 540 adjacent to the processing tank 540 where the washing process is performed and recycled.

This configuration and process can minimize the loss of the filter medium 541, it is possible to minimize the consumption of the wash water.

Referring to Figure 7 will be described a water purification system using the automatic continuous filtration device attached dissolved air pressurization tank.

Water purification system using dissolved air pressurization tank includes water well (100), rapid and slow mixing paper (300, 400), dissolved air pressurization tank (500), scum storage tank (600), treatment tank (700) and disinfection equipment ( 800) and the like.

Landing well 100 is a place for storing a certain amount of raw water containing sludge.

Rapid mixing paper 300 is supplied with the raw water stored in the watering well 100 in accordance with the pumping of the raw water supply pump 101 installed in the watering well 100, and also the medicine (alum) supplied from the chemical supply device 200 It is a place where the medicine is mixed with raw water.

The slow mixing paper 400 receives raw water mixed with chemicals supplied from the rapid mixing paper 300 to form flocs by agglomerating sludge contained in raw water in the form of lumps.

Raw water in which floc is formed through the slow mixing paper 104 is introduced into the auxiliary tank 510 constituting the dissolved air pressurization tank 500 through the above-described raw water inlet pipe 511.

The raw water having the floc introduced into the auxiliary tank 510 is mixed with the dissolved air circulating water introduced into the auxiliary tank 510 through the circulating water inlet pipe 512, and then floc through the bubbles generated in the circulating water. Will injure you.

Dissolved air circulating water facility 910 is provided to supply the dissolved air circulating water to the auxiliary tank (510).

The dissolved air circulating water facility 910 pumps the treated water of the air compressor 911 for compressing and supplying the air, and the circulating water pipe 912 (in this embodiment, the treated water tank 700) to receive the treated water. And a pressurized tube 913 (air dissolving tube) for mixing the compressed air supplied from the air compressor 911 and the circulated water supplied from the circulating water pipe 912. Dissolved air circulating water generated by the flow is introduced into the auxiliary tank 510 through the circulating water inlet pipe 512.

When the floc (that is, scum) floating in the auxiliary tank 510 is accumulated in the upper layer of the floating tank 520, the scum is discharged to the scum outflow pipe 531 of the auxiliary tank 510 through the scum removing device 532. Then, the floc is treated water is introduced into a plurality of treatment tanks 540 partitioned in the floating tank 520. The treated water introduced into the treatment tank 540 is completely filtered in the process of passing through the filter medium 541 and then discharged into the treated water discharge pipe 542.

On the other hand, foreign matter accumulated in the upper layer of the filter medium 541 is periodically washed by the washing water facilities (wash water supply pipe 702 and compressed air supply pipe 901), the cleaning chamber 552 and the like.

The scum storage tank 600 is a place for storing the scum discharged through the scum outflow pipe 531 of the auxiliary tank (510).

The treatment tank 700 is a place for receiving and storing treatment water filtered by foreign matter from the treatment tank 540 of the floating tank 520. That is, the treated water introduced into the treatment tank 540 of the floating tank 520 passes through the filter medium 541 installed in the treatment tank 540 to filter foreign matters contained in the treated water. The filtered treatment water is discharged to the outside of the treatment tank 540 through the treatment water discharge pipe 542 installed on the bottom surface of the treatment tank 540, and then the treated water discharge pipe 701 to the treatment water tank 700. It is discharged.

The disinfection facility 800 is a facility that receives the treated water stored in the treated water tank 700 by the operation of the discharge pump and purifies the drinking water through chlorine disinfection. At this time, the disinfection facility 800 is to be used to purify the treated water to drinking water, and if the present invention is used for the purpose of purifying the water of the lake, without using the chlorine disinfection facility, By discharging the treated water directly to the lake, it can be used as a lake purification system.

In the above, the present invention has been described in the manner used in the water purification system, but the present invention can be used not only in the water purification system, but also in wastewater or sewage treatment systems.

The above embodiments are only preferred embodiments of the present invention, and the technical idea of the present invention may be variously modified or adjusted by those skilled in the art. Such modifications and adjustments fall within the scope of the present invention if they use the technical idea of the present invention.

The present invention can be used as a water purification system using an automatic continuous filtration device attached dissolved air pressurization.

1 is a front conceptual view of an automatic continuous filtration device-mounted dissolved air pressurization tank according to an embodiment of the present invention;

2 is a plane conceptual view of FIG. 1;

3 is a front conceptual view illustrating an operating state of the sand separating apparatus in FIGS. 1 and 2;

Figure 4 is a longitudinal cross-sectional conceptual view of the sand separation apparatus in FIG.

5 is a cross-sectional view taken along line A-A of FIG.

6 is a plan view and a front view of the configuration for the discharge direction change device in FIG.

Figure 7 is a process diagram of the water purification system using the automatic continuous filtration device-type dissolved air pressurization tank according to an embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

100: initiation well 101: raw water supply pump

200: chemical supply device 300: rapid mixing paper

400: slow mixed paper 500: dissolved air pressurization

510: auxiliary tank 511: raw water inlet pipe

512: circulating water inlet pipe 513: injection nozzle

520: floating tank 531: scum leak pipe

532: scum removing device 540: treatment tank

541 filter medium 542 treated water discharge pipe

551: rotary table 552: cleaning chamber

553 connection pipe 554 washing chamber moving means

561: filter medium separator 562: filter medium discharge valve

563: flow flow guide inlet 564: inner pipe for separating the filter medium

565: discharge pipe 566: discharge direction change device

567: filter media shatterproof cover

600: scum storage tank 700: treated water tank

701: treatment water discharge pipe 702: washing water supply pipe

800: disinfection equipment 901: compressed air supply pipe

900: dissolved air circulating water equipment 911: air compressor

911: Circulating water pipe 913: Pressurized tube

Claims (3)

In the pressure flotation tank, a circular auxiliary tank which receives the floc formed raw water and the dissolved air circulating water generating bubbles and floats the floc by using the bubbles of the dissolved air circulating water to separate the raw water into the floc and the treated water ( 510, a circular floating tank 520 surrounding the auxiliary tank 510, a scum outflow pipe 531 installed at the center of the auxiliary tank 510, and provided at an upper side of one side of the floating tank 520. A scum removing device 532 for filtering the scum that floats from the auxiliary tank 510 and discharging the scum to the scum outflow pipe 531, and forming a partition with a partition along the circumferential surface between the floating tank 520 and the auxiliary tank 510. And a plurality of treatment tanks 540 that receive the treatment water separated from the auxiliary tank 510, each of which is installed in the treatment tank 540 and the foreign matter included in the treatment water supplied to the treatment tank 540. Filter medium 541 for filtering out the matter Treatment water discharge pipe 542 respectively installed on the bottom surface of the tank 540, the rotary table 551 is provided on the upper side of the floating tank 520 rotatably provided along the circumferential surface of the floating tank 520 Rotating table rotating means for rotating the rotary table 551, the washing chamber for closing the upper surface of the processing tank 540 when the lowering state is provided to be movable up and down in the lower portion of the rotary table (551) 552, a washing chamber moving means 554 for moving the washing chamber 552 up and down, a cylindrical filter medium separating device 561 provided in the vertical direction on the rotary table 551, the filter medium separating device ( The filter medium discharge valve 562 provided at the lower end of the filter medium separating device 561, opening and closing the lower end of the filter medium separating device 561, the filter medium separating device 561 is provided on the upper side of the filter medium separating device 561 to receive the washing water inflow Being Rotating flow guide inlet portion 563 having a form for guiding the washing water to rotate along the inner circumferential surface of the filter medium separating device 561, one end is provided to be opened downward in the filter medium separating device 561, The inner pipe 564 for separating the filter medium provided at the lower portion of the rotary flow guide inlet 563 and having the other end exposed to the outside of the filter medium separating device 561, and one end of the washing water from the inner pipe 564 for separating the filter medium. And connecting the inside of the washing chamber 552 with the washing water discharge pipe 565 provided at the other end to discharge the washing water to the scum outflow pipe 531 and the rotating flow guide inlet 563. Automatic continuous filtration device-type dissolved air pressurized relief tank comprising a connecting pipe (553). The method of claim 1, Discharge direction change device 566 for changing the discharge direction so that the washing water discharged from the washing water discharge pipe 565 can be discharged to any one of the auxiliary tank 510 and the scum outflow pipe 531 discharges the washing water. Automatic continuous filtration device-type dissolved air pressurization tank provided in the piping for the. The method of claim 1, Automatic filter device attached type dissolved air pressurizing basin characterized in that the filter medium shatterproof cover 567 is provided in the inner lower portion of the filter medium separating device.

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