KR100667013B1 - High speed filter for advanced water treatment - Google Patents

Abstract

A high speed filter for the advanced water treatment is provided to obtain the excellent quality of the treatment water at a short time. An outside box(10) is constructed by upper and lower plates(11,12) and a wall plate(13) and forms the closed space. Upper and lower nets(21,22) are installed closely at the upper and lower ends of the inside of the outside box. A filtering layer(30) is filled with filtering materials between the space of the upper and lower nets and filters the treatment water. Plural filtering paths(40) are formed at the upper and lower directions of the filtering layer and pass through the treatment water.

Description

High speed filter for advanced water treatment

1 is a view showing a soil adsorption progress state of the granular filter according to the conventional general granular filtration method

Figure 2 is a schematic cross-sectional view showing a unit high speed filter according to an embodiment of the present invention

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

Figure 4 is an exploded perspective view showing an example in which the outer cylinder of the unit high-speed filter according to an embodiment of the present invention is detachably coupled in the middle portion

Figure 5 is a side cross-sectional view of the engaged state of Figure 4

Figure 6 is a view showing the dirt adsorption progress state of the high-speed filter according to the present invention

7 is a view showing a state in which a plurality of unit high speed filter is installed in accordance with another embodiment of the present invention

<Description of Symbols for Main Parts of Drawings>

10: Outer cylinder 11: Upper panel part 12: Lower panel part

13: Wall board part 14: Lower body part 15: Upper lid part

16: Clamp 17: Inspection window 18: Fixed jaw

21: upper network 22: lower network 30: the upper layer

40: filtration passage 41: vortex flow hole pipe 51, 52: entrance

53: connection pipe 61: treated water inlet pipe 62: treated water discharge pipe

The present invention relates to a high-speed filter for the advanced treatment of treated water or raw water of drinking water, constant water, etc., which have undergone pretreatment through physical treatment, chemical treatment, or biological treatment. The high-pressure filter for advanced water treatment to maximize the filtration efficiency by maximizing the filtration surface area and the filtration opportunity for the treated water by installing a plurality of filtration passages made of vortex-type perforated pipes in the inner layer accommodated inside the outer cylinder. It is about.

In particular, the present invention is to increase the flow rate of the treated water is equal to the flow rate of the treated water by increasing the sum of the cross-sectional area of the vortex-type perforated pipe installed inside the filter bed than the cross-sectional area of the inlet and outlet of the filter water flow in and out so that the resistance due to the filter bed is minimized It is designed to be filtration through high filtration surface area while filtration is performed at high speed, so that water of high quality treated water can be quickly obtained, and the facility area is small because no separate power or operation of equipment is required. The present invention relates to a high speed filter for advanced water treatment, which is easy to maintain and minimizes installation and operating costs.

As is well known, the filter is a device that obtains clear water by passing water to be treated through a filtrate formed by filling a filter medium suitable for filtration and adsorbing and adhering dirt to the filter medium to separate water and dirt. Therefore, the size of the filter varies according to the size of the filter, and the filtration rate is determined according to the size of the gap, but for effective filtration, the smaller the gap, the higher the filtration effect.

The conventional filter has a slow filtration rate due to the resistance of the filtrate and the loss head thereof, and the horizontal area of the filter increases exponentially as the amount of water treatment increases. Therefore, the conventional filter has a disadvantage that the processing speed is very slow, the horizontal area must be large.

General sewage treatment methods can be divided into ordinary water treatment methods and advanced water treatment methods.

In general, the water treatment is discharged after physical treatment (screening + sedimentation, sedimentation), which is the first treatment in sewage or sewage, and biological treatment, which is secondary treatment. The discharge water quality is about 20 ppm of BOD. .

Advanced water treatment is a filtration method that reprocesses the treated water after the first and second treatment to obtain better water quality. The final water quality is designed to be less than 5ppm BOD.

Drinking water or high-level water treatment process is performed to ensure clearer water quality than raw water. The final water quality is designed to be less than 1ppm BOD.

Conventionally, granular filtration methods such as rapid sand filtration and activated carbon filtration are mainly used as such advanced water treatment methods.

The conventional filter used in the granular filtration method fills the media with a cylindrical or polygonal cylinder of a certain size at a certain height, and then presses the bottom-up to pass the treated water from the top to the bottom and the bottom-up and pressure to pass the treated water from the bottom to the top. Pressure type to increase the filtration rate.

The conventional filter as described above uses a surface filtration and internal filtration (volume filtration) action, it can be divided into two steps below the filtration action to remove contaminants (see Figure 1).

In the first step, the particles of sewage are transported to the surface of the media by moving away from the stream where the sewage flows, and the sieving action by the filter layer, the blocking effect by the surface of the media and the gravity sedimentation of the soil particles It happens mainly.

In the second step, the transported particles adhere to the surface of the media and are captured. In this case, the adhesion and adsorption of the dirt particles and the detaining surface (which initially becomes the median surface and then the surface generated by the captured dirt particles) is carried out. This is a step that takes place at the same time.

Therefore, in the granular filtration method, the detention by adhesion on the surface of the filter media is the main factor of the filtration action. As a result, the wider the filtration layer surface area, the better the filtration efficiency, and the larger the surface of the filter media. Filtration can be performed smoothly.

However, such a conventional filter has a property that the detainer concentrates on the surface filtration layer, so that most of the filtration is performed within a few millimeters of surface surface, so that contaminants accumulate on the surface in a short time and the loss head is high, so the filtration lasts for a long time. it's difficult. In addition, the amount of contaminants detained in the thin filtrate has a limit, which stops the filtration and causes an accident of leaking contaminants.

Therefore, the conventional filtration method as described above requires a surface cleaning, a large area of the surface (filtration) and a deep filter layer (700 ~ 1,200mm). In addition, there is a problem that the mud ball (Mud Ball) phenomenon occurs in the surface layer of the filter after a certain period of time to continue the filtration.

In view of the reason for the mudball, since most of the filtration is performed within a few millimeters of the surface layer of the media in all physical filtration, contaminants may be deposited on the surface due to continuous inflow of raw water.

Accordingly, in order to remove mud ball phenomenon and surface contaminants, the supply of treated water is cut off to increase the filtration effect, and surface cleaning is frequently performed by cleaning the sludge accumulated on the laminated surface of the media with high pressure water using power. Should give.

In addition, the filter medium is cleaned by spraying water at a high pressure in the direction opposite to the inflow direction of the treated water in order to extend the useful life of the filter medium while continuing filtration by removing the dirt stuck or attached between the filter material stacked on the lower surface of the filter medium. After the backwashing process, the backwashing method should be carried out by transporting the dropped contaminant (sludge) to the designated passageway and taking it out.

Therefore, the conventional filter is a lot of mechanical equipment, pipes and power used in the filter media cleaning work, there is a lot of loss of media spilled with the removed dirt, not only very inconvenient, but also frequent cleaning, or takes a long time to operate The efficiency was inevitably lowered.

In addition, the filter media used in the treatment process is replaced with new media when the filtration capacity drops, and the used media is disposed of or regenerated.In the case of large volumes, the replacement of new media is inconvenient, and the used media is buried or incinerated. There was a problem in that the costly wasteful disposal.

In other words, the conventional filter, regardless of the bottom-up, top-down, pressure-type filter, in order to increase the filtering effect, by periodically cleaning the lump of dirt generated on the surface of the filter medium to discharge the dirt so that filtration can be continuously maintained effectively in the inner layer of the filter medium. It must be induced.

If the filtration is performed in the inner layer and the filter medium inside the filter layer is contaminated with dirt, the filtration does not proceed, so it is necessary to backwash in the opposite direction of the filtration progression to maintain the filtering effect of the filter medium. At this time, a lot of energy is consumed and loss of media occurs during washing, there was a problem that can not filter the treated water during washing.

In addition, the conventional filter is laminated with a filter medium of about 1m high and the water in the state of the filter bed is installed in a large state inflow of water to press the water through the gap between the media without a separate space or gravity-type, so the horizontal installation area The filtration speed of slow filtration, which is not only necessary but is not currently used, is about V = 3 ~ 6m / day, and the rapid filtration speed of rapid sand filtration, which is currently widely used, is V = 100 ~ 200m / day = 0.115 Very inefficient, about 0.23 cm / sec.

 The minimum filtration speed of the high-speed filter is V = 5,000m / day = 5.79cm / sec, which is more than 30 times the existing water.

In addition, in conventional filters, the rate of passage of water varies depending on the size of the median gap due to the resistance of the media. However, the faster the filtration rate, the more contaminant leakage occurs. Therefore, in order to obtain a constant filtering effect, the size of media, the thickness of the media, and the media type · The method of cleaning the filter media after filter contamination, the speed of filter media passing through water, etc. must be designed and operated precisely.

In addition, the conventional filter is to reduce the particle size of the filter medium in order to increase the efficiency of the filtration, or induces the filtration inside the filter bed, but the filtration rate is further lowered.

In addition, when poorly designed, there is a concern of leakage of contaminants, and the gap of media is extremely narrow due to the filtration action which is mostly performed within a few millimeters of surface. Due to this, there is a disadvantage in that the surface area of the water treatment, that is, the filter equipment area, increases exponentially.

The present invention has been made to solve the problems described in the conventional filter for the advanced treatment of sewage treatment water or drinking water, the raw water of the drinking water and the like by using the granular media, the object of the present invention is to By increasing the surface area of filtration as much as possible by installing a large number of filtration passages made of vortex-type perforated pipes, it is possible to obtain high quality filtered water and minimize the equipment area without the need for a separate filtration aid. The purpose is to provide a high-speed filter for advanced water treatment that is easy to maintain and low in operation cost.

Another object of the present invention is to provide a filtration flow through a plurality of filtration passages made of vortex-type perforated pipes to maximize the chance of filtration of the treated water in contact with the media through a structure that allows the treated water to pass through in contact with the media in the vortex flow state. The purpose is to provide a high-speed filter for advanced water treatment that can maximize the efficiency.

Another object of the present invention is to provide a high-speed water filter for high water treatment, which is designed so that the filtration is made at a high speed by designing so that the flow rate of the treated water flows in and out while maintaining the same speed.

High speed filter for advanced water treatment of the present invention for achieving the above object, the outer cylinder consisting of the upper and lower plate portion and the wall plate portion to form a sealed space therein; Upper and lower nets installed inside the outer cylinder and installed near the upper and lower ends; A filtrate which fills the space between the upper and lower nets with a media having a particle size larger than that of the upper and lower nets and filters the treated water in contact; A plurality of filter passages formed in the filtrate in a vertical direction to allow the treated water to come into contact with the media; And a pair of entrances connected to the upper and lower plates of the outer cylinder, respectively, one of which flows the treated water into the inner space of the outer cylinder and the other, which discharges the treated water having passed through the filter layer out of the outer cylinder. It is a basic feature.

The filter passage is made of vortex-type perforated pipe wound with a spiral cylindrical body so that a spiral through-hole smaller than the particle size of the filter medium constituting the filter layer is repeatedly formed, and the upper and lower ends of the vortex-type perforated pipe are fixed to the upper and lower networks. It provides a technical configuration characterized in that the installation as possible.

In addition, the cross-sectional area of the pair of entrances and exits are formed to be equal to each other, and the total cross-sectional area of the filter passages provides a technical configuration, characterized in that formed by about 5 to 15% larger than the cross-sectional area of any one entrance.

In addition, the present invention is a combination of a plurality of high-speed filters having the configuration described above, and the plurality of high-speed filters are connected and installed repeatedly one by one, so that the treated water is filtered while passing in the order of connection Provides a high speed filter for advanced water treatment.

According to the present invention having the above characteristics, the treated water is contacted with the filter medium through a plurality of filter passages installed inside the filter bed, so that the filter surface area per unit filter layer can be formed as large as possible, and the treated water is in contact with the filter medium in the flow state of the vortex. In addition, it is possible to maximize the filtration efficiency by the same inflow rate and filtration rate of the treated water.

In addition, according to the present invention, regardless of the load of the treated water to be treated can obtain a good quality of the water quickly, minimize the installation area of the filter compared to the amount of treated water, reduce the operating energy and maintenance costs Big.

Hereinafter, the technical configuration of the present invention will be described in more detail with reference to the accompanying drawings in accordance with an embodiment of the present invention.

As shown in Figures 2 to 6, the high-speed treatment filter for high-water treatment according to the present invention is the treated water (BOD 20ppm) after the first and second pretreatment through a physical treatment process, chemical treatment process or biological treatment process, etc. It is a high speed filter for high water treatment designed to secure the maximum filtration surface area per unit volume for high speed filtration and to make the flow rate of the water flow in and out equally natural. It consists of (21) (22), the filtrate 30, the filtration channel | path 40, and a pair of entrance / exit 51 and 52.

The outer cylinder 10 is formed of a structure forming an airtight space formed by the upper and lower plate portions 11 and 12 and the wall plate portion 13 to accommodate the filtrate layer 30.

The outer cylinder 10 may be formed in a cylindrical shape having a height of about 700 cm and a diameter of about 500 cm using a synthetic resin or metal having strong corrosion resistance in consideration of ease of installation, replacement, and transportation.

And the outer cylinder 10 is formed of the lower body portion 14 and the upper lid portion 15 that is separated and combined divided up and down at the upper end of the wall plate portion 13 for the new installation or replacement of the media filled in the interior. And, it is good to fasten the part to be separated using the clamp 16 provided with the packing.

In addition, the outer cylinder 10 is provided with a check window 17 formed of a transparent material at a predetermined portion where the inner filter layer 30 is visible, and the contamination level of the filter layer 30 is visually observed through the check window 17. It is preferable to use it for identification and for determining the replacement timing of the carbon medium according to the identification result.

The upper and lower meshes 21 and 22 are installed to fix the granular media filled between them to form the fibrous layer 30 which is maintained in a constant shape, and to prevent the media from being lost. The mesh size of the filter should be smaller than the particle size of the media (about 20 to 30%), and the inner space of the outer cylinder 10 is installed near the upper and lower ends so that a free space is formed at the upper and lower ends of the inner space of the outer cylinder 10. .

The reason for providing a free space at the upper and lower ends of the inner space of the outer cylinder 10 is to allow the treated water to be first introduced evenly spread over the filter bed 30 and at the same time collect and discharge the treated filtered water. 5, the upper and lower nets 21 and 22 are placed on the fixing jaw 18 formed on the inner wall surface of the outer cylinder 10 as shown in FIG. And it can be formed in such a way that put the support leg on the lower plate portion 12 of the outer cylinder (10).

The filter layer 30 filters the treated water in contact with the media having a particle size larger than the mesh of the upper and lower meshes 21 and 22 in the space between the upper and lower meshes 21 and 22.

The said media employ | adopts what is utilized abundantly as a constant media.

Generally used as a water purification media, oxidative decomposition of organic matter by physical adsorption through the capillary phenomenon of micropores, chemical adsorption through the reaction of carbon as a component, and microbial bacteria reproduction. It is known that the adsorption effect by biological adsorption is excellent.

In the present invention, such a medium may use activated carbon which has undergone an activation process, but in the present invention, general charcoal, carbon, anthrasite, etc., which have not undergone an activation process, may be used.

A plurality of filter passages 40 are formed in the up and down direction in the filter layer 30.

The filter passage 40 is the most important structural part of the present invention, which is disposed at a predetermined interval inside the filter layer 30 and serves to pass the treated water while making contact with the filter medium.

In the present invention, the filtration passage 40 is provided by installing the vortex flow hole pipe 41 so that the upper and lower ends thereof are fixed to the upper and lower networks 21 and 22, respectively, to penetrate the inner layer 30. It is.

The vortex type hole pipe 41 is wound by winding a coil in a spiral cylindrical body so that a spiral through hole smaller than the particle size of the filter medium constituting the filter layer 30 is repeatedly formed. The water has a function of allowing the water to pass through while in contact with the media in a vortex flow state.

That is, the vortex flow pipe 41 is formed between the coil wound in the spiral cylindrical body of the spiral through-hole smaller than the particle size of the media, the media is not caught through the spiral through-hole is lost from the filter layer 30 This prevents the phenomenon, and the treated water passes through contact with the media in the vortex flow state due to the change of the water flow to rotate along the spiral through hole, so as to increase the filtration surface area and the filtration opportunity for the treated water as much as possible. do.

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A pair of entrances and exits 51 and 52 are connected to the upper plate portion 11 and the lower plate portion 12 of the outer cylinder 10, respectively, one of which flows the treated water into the inner space of the outer cylinder 10 and the other It serves to outflow the treated water passing through the filter layer 30 out of the outer cylinder (10).

In other words, when the treated water flows into the upper entrance 51, the filtered water exited through the downward filtration is discharged through the lower entrance 52, and when the treated water flows into the lower entrance 52. The filtered water pushed upward through the upward filtration is discharged through the upper entrance 51.

On the other hand, the filter according to the present invention is designed so that the inflow rate and the outflow rate is equal to the natural flow by using gravity without any additional equipment.

In order to realize this, in the present invention, the cross-sectional areas of the pair of entrances and exits 51 and 52 are formed to be the same, and the total cross-sectional area of the filter passages 40 is 5 to 15% larger than the cross-sectional area of any one entrance. As a result, the total amount of the treated water flowing through one of the inlets and outlets passes at the same speed as the inflow through the filter passages 40, and the treated filtrate is also discharged through the opposite entrance at the same speed.

The reason for forming the total cross-sectional area of the filter passage 40 by about 5 to 15% larger than the cross-sectional area of any one entrance is to naturally preserve the head loss and the contact friction loss caused by the treated water passing through the filter passage 40. This is to prevent trouble.

As described above, an example in which the total cross-sectional area of the filtration passage 40 is 10% larger than the cross-sectional area of any one entrance is made equal to the inflow rate of the treated water and the outflow rate of the filtered water.

When the pipe diameter of the inlet and outlet is D = φ100 mm, the diameter of the vortex flow pipe in the filtrate is d = φ20 mm, the entrance cross section area A and the vortex flow pipe cross section area b,

A = (D / 2) ² × 3.14 = 50² × 3.14

b = (d / 2) ² × 3.14 = 10² × 3.14,

A / b = n = (D / d) ² = (100/20) ² = 25

Therefore, in view of the resistance, the number of installation of the filter passage that formed a 10% larger cross-sectional area of the filter passage was calculated.

Per entrance (N) = Number of filtration passages (n) × 1.1 = 25 × 1.1 = 27.5

That is, the pipe diameter of the inflow side entrance and the outflow side entrance is D = φ100 mm, and the number of filtration passages is 28 pieces in the condition of the diameter of the vortex type perforated pipe 41 in a filter bed d = φ20 mm.

Comparing the filtration surface area of the high-speed filter according to the present invention configured as described above and the filter according to the conventional granular filtration method with a filter having a diameter of C = φ500 mm and an effective layer height of h = 550 mm as an example.

If the diameter of the filter inlet and outlet according to the present invention under the above conditions is D = φ100mm,

1. Filtration surface area P of the conventional filtration method P = filter radius x layer radius x pi = 0.25m x 0.25m x 3.14 = 0.19625m2,

2. The surface area p = (surface area radius² × π)-(filtration passage radius² × π × filtration passage number) + (filtration passage diameter × π × filtration layer height × filtration passage number) = (0.25) m × 0.25m × 3.14)-(0.01 × 0.01 × 3.14 × 28) + 0.02 × 3.14 × 0.55 × 28 = 1.154578㎡

Therefore, although the effective surface filtration surface of the conventional filtration method is configured only on the upper surface of the filtrate, the present invention has a filtration surface is also formed inside the filtration passage to maximize the filtration efficiency, thereby filtration surface area of the high speed filter according to the present invention. The above example alone leads to (p = 1.154578) / (P = 0.19625) = 5.9 times the filtration surface area of the conventional granular filter.

In addition, since the present invention forms a filtration passage as a vortex-type perforated pipe, the treated water passes through contact with the media in a vortex flow state while changing the rotating water flow, thereby increasing the filtration surface area and the filtration opportunity, thereby greatly improving the filtration efficiency. It is good, as shown in Figure 6 it is evenly adsorbed throughout the filter bed, so that the use of the filter can be maximized, the operating cost is very economical.

In Fig. 7, a plurality of unit high speed filters according to the present invention are combined, and the plurality of high speed filters 1 to n are sequentially connected and installed one by one, and the order of connection is provided (1, 2, 3, 4, 5). An embodiment is shown in which the treated water is filtered as it passes.

In this embodiment, the plurality of high speed filters 1 to n are disposed in stages so as to be gradually lowered with a predetermined height difference, and the upper doorway 51 of the high speed filter 1 disposed at the top is processed. It is connected to the water inlet pipe 61, the lower entrance 52 of the high speed filter (n) disposed at the bottom is connected to the treated water discharge pipe (62).

The remaining entrances 51 and 52 of the high speed filters 1 to n are connected to the connection pipe 53 that can be separated and coupled. In addition, in installing the high speed filters 1 to n, a difference in the installation height of the upper high speed filter and the immediately below high speed filter is made within the height range of the outer cylinder 10.

Thus, the treated water is filtered while the odd high speed filters (1,3,5,7 ...) pass downflow and the even high speed filters (2,4,6,8 ...) pass upflow. .

The present invention can adjust the final target water quality through such an embodiment. That is, the present invention is a high-speed water filter for high-water treatment to filter the treated water (BOD 20ppm) through the first and second pre-treatment process through a physical treatment process, chemical treatment process or biological treatment process, the number of installation of the unit high speed filter There is a characteristic that the final target water quality can be adjusted by increasing or decreasing.

In addition, the high speed filter of the present invention can be designed to minimize the filtration area while increasing the filtration efficiency by designing a filtration speed of at least V = 4,000m or more (20 times more than the existing).

In the embodiment of using a plurality of high-speed filter unit as described above, the present invention is to stop the operation for a short time and if only one of the high-speed filter is found to replace the corresponding high-speed filter, so that the operation can be restarted in a short time. Can be.

The present invention provides a high-speed water filter for high water treatment is carried out in the configuration as described above, the present invention is not limited to the embodiments of the technical scope, various modifications within the scope not departing from the technical spirit of the present invention It will be apparent to one skilled in the art that is possible.

The high speed filter for the advanced water treatment of the present invention configured as described above has a structure in which a plurality of filter passages are provided inside the filtrate using activated carbon, anthracite, charcoal, carbon, etc. to maximize the filtration surface area for the treated water. Maximizes the chance of the treated water contacting the media while minimizing the horizontal installation area of the filter.

In addition, by designing the flow rate of the treated water so that it flows in the same way as the acceleration of gravity, high quality filtered water can be obtained in a short time while a large amount of raw water is filtered at high speed.

In addition, it is possible to replace the high-speed filter in a short time and to perform the filter replacement work or cleaning in a separate place, there is no need to interrupt the operation for a long time, easy maintenance and low operating costs.

Therefore, according to the present invention, the filtration speed is high while the filtration efficiency is high, and the horizontal cross-sectional area of the filter is minimized through the structure in which the filtration works smoothly even inside the filter bed. It is a very useful invention that can greatly reduce the cost and greatly improve the filtration efficiency.

Claims (9)

An outer cylinder 10 including upper and lower plate portions 11 and 12 and a wall plate portion 13 to form a sealed space therein; Upper and lower nets 21 and 22 that enter inside the outer cylinder 10 and are installed near the upper and lower ends; A filter layer (30) for filtering the treated water in contact with a media having a particle size larger than the mesh of the upper and lower meshes (21) and 22 in the space between the upper and lower meshes (21) and (22); A plurality of filter passages 40 formed in the filtrate layer 30 in a vertical direction to allow the treated water to come into contact with the filtrate; It is connected to the upper plate portion 11 and the lower plate portion 12 of the outer cylinder 10, one of which flows the treated water into the inner space of the outer cylinder 10, and the other is the treated water passing through the filter layer 30 High speed water filter for high water treatment, characterized in that consisting of; a pair of entrances (51, 52) for outflow of the outer cylinder (10). According to claim 1, wherein the outer cylinder 10 is formed of a lower body portion 14 and the upper lid portion 15 which is divided into the upper and lower portions separated from the upper end of the wall plate portion 13 is combined, High speed filter for processing. The high speed filter for advanced water treatment according to claim 1, wherein the outer cylinder (10) is provided with a check window (17) formed of a transparent material at a predetermined portion where the inner layer (30) is visible. The high speed filter for advanced water treatment according to claim 1, wherein the filter medium is carbon (including activated carbon) or anthrasite. According to claim 1, wherein the filter passage 40 is made of a vortex-type perforated pipe wound in a spiral cylindrical body to form a spiral through-hole smaller than the particle size of the filter medium forming the filter layer, the upper and lower ends of the vortex-type perforated pipe High-speed water filter for high water treatment, characterized in that it was installed to be fixed to the upper and lower networks. According to claim 1, wherein the cross-sectional area of the pair of entrances (51, 52) are formed to be the same, the total cross-sectional area of the filter passage 40 is formed by about 5 to 15% greater than the cross-sectional area of any one of the entrances. A high speed filter for advanced water treatment. A plurality of high speed filters according to any one of claims 1 to 6 are combined, and the plurality of high speed filters (1 to n) are repeatedly connected and installed one by one in turn, and the order (1, 2, 3,4,5, .... n) High-speed water filter for high water treatment, characterized in that the filtered water as it passes through. According to claim 7, wherein the plurality of high-speed filters (1 to n) are arranged in steps to form a gradually lowered form with a predetermined height difference, the upper doorway 51 of the high-speed filter (1) disposed at the top Is connected to the treated water inlet pipe 61, the lower outlet 52 of the high speed filter (n) disposed at the bottom is connected to the treated water discharge pipe 62, and the treated water is an odd high speed filter (1, 3) , 5,7 ...) pass downflow and the even number of high speed filters 2,4,6,8 ... pass through the upflow flow with the remaining entrance 51 of the high speed filters 1-n. 52) is a high-speed water filter for high water treatment, characterized in that connected to the connection pipe (53). 9. The high speed water filter according to claim 8, wherein the high speed filters (1 to n) have a difference in height between the upper high speed filter and the immediately below high speed filter within a height range of the outer cylinder (10).

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