KR20020068009A - Apparatus for filtering using variable flexible fiber filter module - Google Patents

Abstract

PURPOSE: A filtering equipment using variable flexible fiber module is provided, which can control water quality of treated water and filtering velocity by changing porous structure of filter layer during filtration and backwashing, inhibit increase rate of filtration resistance thus drastically reducing backwashing frequency, time and water volume required to backwashing. CONSTITUTION: The system comprises a flexible fiber(4), an actuating cylinder(10) for driving perforated plate member, an exterior perforated plate(3) and exterior jacket(2), diaphragm devices(15,16) for preventing back flow, an actuating cylinder(13) for backwashing. The flexible fiber(4) forms a filter layer by filter media installed at a fixed interval to upper and lower fiber fixing plate. The pore space of the flexible fiber is adjusted by actuating cylinder for compacting or releasing. During backwashing process, air is distributed through air distribution plate homogeneously to the filter.

Description

Filter apparatus using a variable flexible fiber yarn filter layer {Apparatus for filtering using variable flexible fiber filter module}

According to the present invention, the flexible fiber yarn filter layer is compressed / relaxed by a filter medium compression / relaxation variable device mounted on a filter plate compression / relaxation porous plate, so that the fine floc particles, algae, and constant water present in sewage / wastewater and sewage water. The present invention relates to a filtration apparatus using a variable flexible fiberglass filter layer that can effectively separate and remove suspended solids and at the same time control pore structure or porosity of the filtration layer to obtain excellent backwashing efficiency.

Generally, pollutants polluting the environment in sewage, wastewater and sewage are classified into dissolved (0.1 μm or less) and suspended (0.1 μm or more), and various kinds of suspended solids in various waters such as sewage, waste water, industrial water and lake water. Contains Suspended Solids. Here, the suspended solids are solid substances composed of particles (organic and inorganic) having a size of 0.1 micron or more, and are also called suspended substances because they suspend water.

Water containing the suspended substance (suspension) is not suitable for use as general water at home or industrial sites, etc. as it is. Therefore, water treatment filters have been developed that increase energy savings by saving water and water resources by treating and using suspended solids present in these waters.

In order to further improve the performance of the filtration apparatus, a filtration apparatus that uses fiber yarn as a filter medium, fixes the filter medium at the bottom of the filter, compresses the filter medium by the raw water supply pressure, and expands the filter medium by air and washing water supply pressure. Registration number 10-0241198, application number 10-1997-0050047, application date 1997-09-30, name; filtration device having a variable filter layer), but this method is a single layer and the degree of crimping of the media is dependent on the raw water supply pressure. Since it is determined by the capture space of the suspended matter is short, the filtration duration is short, frequent washing frequency, it is not easy to cope with the fluctuation of the water quality of the influent, it is difficult to arbitrarily control the desired water quality and quantity. So, a pore controlled filtration device (Publication No. 2000-0072266, Application No. 10-2000-0049089, Application Date 2000-08-24, Name; Pore control filtration device) has been developed and known, but this method is known as a spring and a pore control bag. Filtration device that presses / relaxes the filtrate by restoring force and repulsion due to filtration and backwashing, and since the air gap control bag and spring are separately installed inside the device, considerable inconvenience is caused when replacing the media, and the compression force of the air gap control bag is limited. In addition to the use of the device in the long term, the elastic force of the spring is exhausted, there is a problem that occurs when the crimp / relaxation of the media.

Accordingly, in order to solve the above problems, the present invention has developed a device for separating suspended solids in a solution using a flexible fiber yarn (patent number 10-0324727, application number 10-1999-0013396, and application date 1999-04-15). Device and method for separating suspended solids in solution using a flexible fiber yarn), which can arbitrarily control the depth of the layer and the particle capture space according to the length of the fiber yarn used as the media, Easy to control porosity, pore size, particle capture and filtration quality, easy to cope with changes in feed water quality, difficult to mechanize in the method of integrating flexible and flexible fiber yarns There are disadvantages such as the size of the device increases. In order to solve this problem, the present inventors developed a patent pending underwater suspended solids filtering device (registration number 10-0324727, application number 10-1999-0013396, application date 1999-04-15, name; solution using a flexible fiber yarn The apparatus for separating suspended solids in the inside and the method thereof) is the principle of filtering the capillary phenomena by the co-current filter filtration principle and the filter media filled in the longitudinal direction (co-current). Since the filtration device is adopted as a filtration device, the filling problem of the fiber yarn is not only easy but also the size of the device is reduced by greatly increasing the filtration speed, but it is difficult to remove the suspended solids in the water of 5 μm or less.

The technical problem to be achieved by the present invention is to solve the problems shown in the conventional filtration device as described above, it is possible to filter the suspended solids 5㎛ or more contained in the water regardless of the type, size, state, etc. of suspended solids. The purpose of the present invention is to provide a filtration apparatus using a variable flexible fiberglass filter layer that can freely adjust the depth of the filtrate and the pore size of the filtrate and perform the filtration and backwashing process more efficiently.

Another technical problem to be solved by the present invention is to fill a filter medium on the outside of the plate pressing / relaxing porous plate member equipped with a filter pressing / releasing device for maximizing filtration and backwashing efficiency. When the drive shaft of the media squeezing / releasing device is operated downward by the operation of the actuating cylinder, a plurality of media squeezing / releasing perforated plate members attached to the media squeezing / relaxing variable device presses the media to maximize the filtration efficiency. During cleaning, the working cylinder for driving the porous plate member is raised to relax the filter media, and at the same time, the flexible fiber yarn media is reciprocated up and down by the operation of the back-washing operation cylinder. The purpose is to provide a filtration device that completely shakes off the material.

Another technical problem to be achieved by the present invention is to provide a parallel filtration system that can increase the treatment capacity by combining a plurality of filtration devices in parallel to be suitable for treating a large amount of raw water.

1 is a block diagram of the filtration process of the inflow / outflow filtration device using a variable flexible fiber yarn filter layer according to the present invention.

Figure 2 is a block diagram of the back-washing process of the inflow / outflow filtration device using a variable flexible fiber yarn filter layer according to the present invention.

Figure 3 is a block diagram of the filtration process of the inflow / outflow filtration device using a variable flexible fiber yarn filter layer according to the present invention.

Figure 4 is a block diagram of the backwashing process of the external inflow / internal outflow filtration device using a variable flexible fiber yarn filter layer according to the present invention.

5 is a configuration diagram of a porous plate member for pressing / relaxing a flexible fiber yarn medium using a variable flexible fiber yarn filter layer according to the present invention.

Fig. 5A is a front view configuration diagram when the above-described medium pressing / relaxing porous plate member is expanded;

Fig. 5B is a front view configuration diagram when the above-described medium pressing / relaxing porous plate member is shrunk,

Figure 5c is a planar state configuration diagram showing the expansion and contraction state of the porous sheet member for crimping / relaxing the media at the same time.

Figure 6a and Figure 6b is a block diagram of the upper and lower disk member for fixing the flexible fiber filter media of the filtration device using a variable flexible fiber yarn filter layer according to the present invention.

Figure 7a, 7b, 7c and 7d is an embodiment of the outer cylinder jacket and outer tube of the filtration device using a variable flexible fiber yarn filter layer according to the present invention.

8a and 8b is an embodiment mounted in the backflow prevention diaphragm and the present filtration device according to the present invention.

9, 10 and 11 are graphs of experimental examples of a filtration device using a variable flexible fiber yarn filter layer according to the present invention.

<Description of the symbols for the main parts of the drawings>

1: filtration device

2: Outer jacket of filtration device

3: filtration device outer cylinder porous tube

4: flexible fiber yarn (media)

5: porous plate member for crimping / relaxing the media

6: multi-circle plate member for fixing upper media

7: Multi park plate member for fixing lower media

7a: Media Fixture

7b: Backwash air distribution port

8: upper flange

9: bottom flange

10: Actuator for driving porous plate member

11: Variable drive shaft for crimping / relaxing media

12: Variable drive shaft for crimping / relaxing media

13: Actuator for back washing

14: expansion pipe for welding

15: diaphragm for preventing the upper backflow

16: diaphragm for lower backflow prevention

17: filtration raw water supply valve

18: backwash water supply valve

19: backwashed brine drain valve

20: air supply valve for back washing

21: Filtrate discharge valve

24: Filtrate effluent collection pipe

25: Filtration water collection pipe

In order to achieve the above object, the filtration device 1 according to the present invention, the variable flexible fiber yarn filter layer (4) configured to filter and remove various suspended substances contained in the water, and to remove and wash the suspended substances trapped in the filter medium (4). In the filtration apparatus using), an inner cylinder 3 made of stainless steel or FRP (fiberglass reinforced plastic) material and an inner cylinder formed of a plurality of porous plate members 5 are respectively installed in a drum shape, and the upper and lower portions of the outer cylinder and the inner cylinder are respectively provided. Flexible fiber yarn which is filled and fixed at equal intervals in the upper and lower multi-circuit board members 6 and 7 having a plurality of holes of equal intervals to equalize the filling density of the filtrates over the entire filtrate in 4) and; An operation cylinder 10 for driving the porous plate member for adjusting the porosity of the media; A media device compression / relaxation device (rod arm) 12 connected to the outer body of the porous plate member driving operation cylinder 10 and the media plate crimp / relaxation 5 to control the crimp and relaxation of the media media Wow; An outer cylinder porous tube (3) and an outer cylinder jacket (2) installed over the depth of the filtration layer to uniformly distribute the filtration water / filtration water / backwash water, decrease the filtration resistance, and increase the filtration area; Upper and lower backflow prevention diaphragms 15 and 16 for preventing the introduced raw water from being discharged without being filtered; And in order to facilitate the detachment of the various suspended substances trapped in the filter medium by repeatedly moving the upper sheet fixing porous plate member up and down when backwashing the various suspended substances trapped in the flexible fiber yarn which is a filter medium during backwashing. A working cylinder 13 for cleaning; Moving the media in the radial direction of the inner or outer side to adjust the density per unit area of the media by varying the pores of the media freely to adjust the size of the filtration material for squeezing / relaxing the plurality of media plate It characterized by including (5).

In a preferred embodiment of the present invention, the holes for fixing the media in the upper and lower media fixing plate park members (6) (7) to make an equilateral triangle arrangement for uniform filling of the media and perfect filtration performance.

In a preferred embodiment of the present invention, when the filter medium compression / relaxation variable device driving shaft 11 is raised by the operation of the operating plate 10 for driving the porous plate member during backwashing, the filter medium compression / relaxation variable device 12 moves in the vertical direction. The median compression / relaxation porous plate members 5 are contracted while the medial compression / relaxation porous plate members 5 are contiguous with each other so as to reduce the internal space when each of them is adjacent to each other. Each of the porous plate members 5 is made to be cross-coupled in a concave-convex shape.

In a preferred embodiment of the present invention, the medium contact / relaxation porous plate member (5) is at least eight or more and the number of the more protruding toward the relaxed fiber yarn direction of the end of the uneven (의) is minimized.

In a preferred embodiment of the present invention, the body of the filtering device is composed of two cylindrical cylinders, the inner cylindrical cylinder is composed of the porous plate member (5) for compressing / relaxing the filter medium, the variable device for compressing / relaxing filter medium 12 ) Is composed of a plurality of perforated plate members to be compressed during filtration and to be relaxed during backwashing, the outer cylindrical cylinder (3) is a jacket (jacket) type inner jacket of the outer cylinder perforated tube shape It consists of (3).

In a preferred embodiment of the present invention, between the upper and lower median fixing multi-circle plate member (6) (7) and the median crimp / relaxation porous plate member (5) is the portion of the media is not compacted to maintain a low density of the media Is formed so that the backflow prevention diaphragm device 15, 16 at a position slightly lower than the upper end and slightly higher than the lower end of the filter medium compression / relaxation porous plate member to prevent the raw water introduced into these portions from being filtered out. Is installed.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the filtration device using a variable flexible fiber yarn filter layer according to the present invention. In the following description of the present invention, when it is determined that detailed descriptions of related well-known technologies or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. Terms to be described later are terms defined in consideration of functions in the present invention, and may be changed according to intentions or customs of users or operators. Therefore, the definition should be made based on the contents throughout the specification.

1 is a block diagram of a filter device of the inner upper inlet / outer lower outflow method using a variable flexible fiber yarn filter layer according to the present invention, a view during the filtration process, Figure 2 using a variable flexible fiber yarn filter layer according to the present invention A block diagram of the internal top inflow / outside bottom outflow filtration apparatus, which is a diagram of a backwashing process. Figure 3 is a block diagram of a filter device of the outer upper inlet / inner lower outflow method using a variable flexible fiber yarn filter layer according to the present invention, a view during the filtration process, Figure 4 is a variable flexible fiber yarn filter layer according to the present invention A diagram of a backwashing process of an external top inflow / internal bottom flow method. FIG. 5a shows a state in which the filter medium is pressed during filtration, that is, the filter medium squeezes / relaxes the porous plate member 5 of the filtration device using the variable flexible fiber yarn filter layer according to the present invention. 5B is a porous sheet for squeezing / releasing the media of the filtration apparatus using the variable flexible fiber yarn filter layer according to the present invention. Figure 5c is a configuration of the collected state, Figure 5c is a porous plate member for filter media compression / relaxation of the filtration device using a variable flexible fiber yarn filter layer according to the present invention (5) This is a block diagram showing the changed state of). FIG. 6A is a configuration diagram of a porous disk member 6 for fixing the upper media of the filtration apparatus using the variable flexible fiber yarn filter layer according to the present invention, and shows an arrangement of the media media fixture 6a required for the media filling. FIG. As a block diagram of the lower disk fixing porous disc member 7, the backwashing fixture 7a necessary for filling the filter medium and the backwashing air powder to allow the backwashing air introduced into the lower part during the backwashing to be evenly distributed and injected into the filtrate. The volleyball 7b was shown to have a dual arrangement structure with the medial fixture 7a. 7a and 7b are the outer tube porous tube (3) and outer cylinder jacket (2) for the filtered water outflow of the inflow / outflow filter device (Fig. 1) (Fig. 2) using a variable flexible fiber yarn filter layer according to the present invention, respectively Figure 7c and 7d is an external inlet / outlet tube 3 for filtration raw water inlet of the inflow / outflow filtration device (Fig. 3) (Fig. 4) using a variable flexible fiber yarn filter layer according to the present invention, respectively. It is an example figure of the outer cylinder jacket 2. As shown in FIG. 8A and 8B are exemplary views showing the configuration of the upper and lower backflow prevention diaphragms 15 and 16 of the filtration apparatus using the variable flexible fiber yarn filter layer according to the present invention.

1 to 4, the filtration device 1 using the variable flexible fiber yarn filter layer according to the present invention is preferably at equal intervals to fix a predetermined flexible fiber yarn 4 serving as a filter medium. And a plurality of perforated disc members 6 and 7 having a plurality of holes arranged in an equilateral triangle shape. The median fasteners 6a and 7a formed on the upper and lower median fixing plate members 6 and 7 preferably have the same structure, but the upper median fixing plate member 6 to backwash has a backwash effect. In order to increase the pressure, the structure is capable of shanghai movement by the backwashing operation cylinder, and the lower backsheet fixing porous disc member 7 is placed between the media fixtures 7a so that the backwashing air can be injected into the back layer during backwashing. The washing air distribution port 7b is combined and fixed to the filtration apparatus. In other words, the median fixtures 6a formed on the upper median fixing plate member 6 and the medial fixtures 7a formed on the lower median plate fixing member 7 are formed in the same shape to correspond to each other. Since the holes formed in the porous disk members 6 and 7 for fixing the media are arranged at equal intervals, the spacing between the media of the flexible fiber yarns 4 fixed by these holes is also constant. Therefore, the suspended matter captured by the flexible fiber yarns 4 arranged at equal intervals is uniformly filtered.

And the filter device (1) using the variable flexible fiber yarn filter layer according to the present invention, when backwashing the various suspended substances trapped in the flexible fiber yarn (4), fixing the upper disk member 6 for fixing the upper media and the lower media Backwashing operation cylinder 13 for facilitating detachment of various suspended substances trapped in flexible fiber yarn 4 by moving the flexible fiber yarn layer 4 fixed by the porous disc member 7 for up and down. And a guide rail for facilitating a reciprocating stroke of the porous upper plate 6 for fixing the upper medium. The backwashing operation cylinder 13 is connected with the upper disk fixing member 6 for fixing the upper media through the welding expansion pipe 14, which is a connecting member as shown. 1 is a variable pressure device for crimping / relaxing the drive device 11 when driven by the operation cylinder 10 for driving the perforated plate member downward, and the variable device for crimping / releasing the filter 12 is extended radially to fix the upper and lower media. The filtration process in the state in which the flexible fiber yarn fixed between the disc members 6 and 7 is compressed and compressed is illustrated, and FIG. 2 is used for crimping / relaxing the media by driving the operating cylinder 10 for driving the porous plate member. When the drive shaft 11 operates upward, the filter compacting / relaxing variable device 12 is contracted to show a backwashing process in a state in which the filter medium is relaxed.

1 and 3 show that the filter medium compression / relaxing variable drive drive shaft 11 moves downward by the action of the operating cylinder 10 for driving the porous plate member between the upper and lower media fixing porous disc members 6 and 7. Figure 2 and 4 shows a state in which the flexible fiber yarn (4) fixed to the tension is maintained in tension, the drive shaft 11 for the media compression / relaxation by the action of the operating cylinder 10 for driving the porous plate member is raised. The figure shows a state in which the flexible fiber yarn 4 fixed between the upper and lower media fixing porous disk members 6 and 7 is loosely maintained. In the backwashing process, it will be apparent to those skilled in the art that the porous cylinder member driving operation cylinder 10 and the backwashing operation cylinder 13 will be drive controlled by any known control device (not shown).

In addition, the filtration device (1) using the variable flexible fiber yarn filter layer according to the present invention is flexible filled by a plurality of holes (6a) (7b) formed in the porous disk member (6) (7) for fixing the upper and lower media By moving the fiber yarn 4 inward or outward in the radial direction as shown to change the density per unit area of the flexible fiber yarns 4 (ie, by changing the degree of compression of the flexible fiber yarns), the flexible fiber yarn 4 And a plurality of media compression / relaxation porous plate members 5 to adjust the size of the suspended solids in the water filtered by the pads. 1 and 3 illustrate a state in which the flexible fiber yarns 4, which are the media, are squeezed to the maximum by the median compression / relaxation porous plate member 5, and FIGS. 2 and 4 illustrate the median compression / relaxation porous plate. The state in which the flexible fiber yarns 4 which are the media by the member 5 were relaxed as much as possible. The filter medium compression / relaxation porous plate member 5 forms a cylindrical cylinder shape when the adjacent filter medium compression / relaxation porous plate members 5 are adjacent to each other (expand) as shown in FIGS. 5A and 5C. And adjacent porous plate members 5 are alternately cross-linked in an uneven form to reduce (shrink) their internal space formed by the median pressing / relaxing porous plate members 5 as shown in FIG. 5C. Can be. In FIG. 5C, the media compression / relaxation porous plate members 5 are preferably shown as eight, but it will be apparent to those skilled in the art that the number can be varied in consideration of design aspects.

On the other hand, the filtration device (1) using the variable flexible fiber yarn filter layer according to the present invention includes an operation cylinder (10) for driving a porous plate member for controlling the radial movement of the porous plate member (5) for crimping / relaxing the media. In addition, the actuating cylinder 10 for driving the porous plate member is driven by a predetermined known control device (not shown) similarly to the actuating cylinder 13 for backwashing. The actuating cylinder 10 for driving the perforated plate member is connected to the variable device drive shaft 11 for squeezing / releasing the media as shown in FIGS. 1 and 2, and the variable device drive shaft 11 for squeezing / releasing the media is for squeezing / relaxing the media. It is connected to the variable device (12). The mediator compression / relaxation variable device 12 is connected to the mediator compression / relaxation porous plate member 5 to move the porous plate member 5 radially in accordance with the operation of the operation cylinder 10 for driving the porous plate member.

1 to 4 in the filtration device of the present invention, while the jacket for filtration water outflow is installed in the inner upper inflow / outer lower outflow filtration device (FIG. 1) (FIG. 2), the outer upper inflow / inner bottom The outflow filtration device (FIG. 3) (FIG. 4) is provided with a jacket for influent distribution. At this time, the jacket for filtering the outflow water and the jacket for the inflow of water are made of an inner structure of the outer cylinder porous plate 3 and the outer jacket 2 to minimize the pressure loss.

In addition, referring to FIGS. 8A and 8B in the filtration apparatus of the present invention, the density of the media is kept low between the upper and lower media fixing porous disc members 6 and 7 and the media compression / relaxation porous plate member 5. Since a portion is formed, the reverse flow prevention diaphragm device is positioned at a position slightly lower than the upper side and somewhat higher than the lower side to prevent the raw water introduced into these portions from being filtered out. 15) 16 is provided.

In addition, referring to Figures 1 to 4 in the filtration device of the present invention, the structure of the lower part of the filter device is a funnel-shaped lower catchment for smooth discharge of the filtered backwash water during the backwashing, the bottom of the lower sump tank The filter water outlet or concentrated backwash water outlet is installed, it is to be supplied through the backwashing air distribution port 23 formed in the porous member for fixing the lower medium to supply the backwashing air during backwashing. .

The operation of the underwater suspended solids filtration device according to the present invention configured as described above will be described with reference to FIGS.

This filtration device can be operated by changing the inflow and outflow form. Operation mode is divided into internal inflow / outflow type flowing into the inner cylinder and external inflow / inflow outflow flowing into the outer jacket type cylinder, and according to each operation type, raw water inflow / filtration outflow / backwash water inflow / reverse It is divided into the washing water outlet and the location of the collecting pipe is determined by the filtering water inflow method. In each operation mode, the filtration and backwash operation operations are the same except for the filtration water inflow and filtration water outflow methods, and the installation positions / methods of the filtration water inflow collection pipe 25 and the filtration water outflow collection pipe 24.

During the filtration process, the filtration raw water supply valve 17 and the filtration water discharge valve 21 are opened, and when the filter driving / reducing device 11 for filtering / releasing the media moves downward by the driving cylinder 10 for driving the porous plate member, The compression / relaxation variable device 12 is radially opened and the median crimp / relaxation porous plate member 5 is fully unfolded to compress the media. At this time, when the filtration raw water supply valve 17 and the filtered water discharge valve 21 are opened, and the backwash water supply valve 18, the backwash air supply valve 20, and the concentrated water discharge valve 19 are closed, the filtration process starts. do. In this case, in the case of the inflow / outflow filtration device as shown in FIGS. 1 and 2, particles larger than the filtration pores are trapped in the filtration layer while the filtration raw water introduced into the filtration device is compressed and the filtration water is filtered out of the filtration device. It is discharged from the porous pipe 3 through the filtered water effluent collection pipe 24. On the other hand, in the case of the external inflow / internal outflow filtration device as shown in Figures 2 and 3, the filtration raw water introduced into the filtration raw water collection pipe 25 formed below in the upper backflow prevention diaphragm 15, 16 of the filtration device After passing through the filtration layer compressed from the jacket (2) through the outer tube porous tube (3), particles larger than the filtration pores are trapped in the filtration layer, and then the filtrate is collected into the filtration apparatus through the porous plate member (5) for filtration / relaxation of the media. And is discharged through the filtrate outlet pipe installed in the collecting device inside the filtration device. At this time, the inflow water is filtered through the whole side of the filtration layer, and thus the filtration area is greatly increased compared to the conventional one, and the filtration duration is greatly improved. In addition, by adjusting the filling density of the filter medium or the length of the variable device for compressing / releasing the filter medium 12, the air gap of the filter layer can be adjusted, so that the quality of the effluent water can be freely adjusted. If the set time elapses, exceeds the set pressure, or falls below the set amount of filtration, the process immediately switches to the backwash process.

In the backwash process, the filtration raw water supply valve 17 and the filtrate discharge valve 21 are locked, and the backwash air supply valve 20, the backwash water supply valve 18, and the concentrate discharge valve 19 are opened. In addition, the driving device of the porous plate member driving cylinder 10 is moved upwards, and the variable shaft drive shaft 11 for upward movement is moved upward, and the porous sheet member 5 for pressing / releasing the media is carried out by the variable device 12 for pressing / releasing the media. When shrinks, the filtrate is relaxed and the backwashing process proceeds in this state. Preferably, after the backwashing water shakes off the suspended substances as 0.1 to 1% of the raw water supply, the backwashing operation cylinder 13 is introduced at the same time as the backwashing air is injected through the backwashing air inlet 20. It is operated to give strong vibration to the upper and lower parts of the filter bed for perfect backwashing, and the backwashed concentrated water is discharged to the concentrated water outlet through the lower tank in the shape of a funnel under the filter. This process is repeated 1 to 5 times according to the suspended solids concentration and properties in the media to keep the media clean. This backwashing process changes the pore structure of the filtration layer to increase the opportunity and area of pressurized air and backwash water in contact with the media, and increases the turbulence formed by the vibration of the pressurized air, backwash water and upper and lower parts. Excellent cleaning effect.

Hereinafter, the present invention will be described in more detail with reference to the following examples.

Example-Sewage Treatment

B When J in diameter 600mm sewage treatment plant, by installing the filtration apparatus in the longitudinal size of 1,500mm result of operation 6 months, the average daily flow rate amounted to 5,000m ³ / day, an average influent suspended solids (SS) 8.3ppm, The runoff average SS 0.2ppm and removal efficiency reached 97.5%. The removal efficiency by particle size was maintained at 72% at 1 to 3 μm, 80% at 3 to 5 μm, 85% at 5 to 8 μm, and 90% or more at 8 μm or more. 11 is shown for reference.

As described above, the filtration device using the variable flexible fiber yarn filter layer according to the present invention can arbitrarily adjust the water quality and filtration rate of the treated water by changing the pore structure of the filtration layer during filtration and backwashing. In addition, by suppressing the increase rate of filtration resistance and extending the filtration duration, it provides the advantage of drastically reducing the backwashing frequency, the time required for backwashing and the amount of backwashing.

Although a preferred embodiment of the present invention has been described in detail above, those skilled in the art to which the present invention pertains, various embodiments of the present invention without departing from the spirit and scope of the invention defined in the appended claims It will be appreciated that modifications or variations may be made. Therefore, changes in the future embodiments of the present invention will not be able to escape the technology of the present invention.

Claims (8)

In the filtering device for filtering and removing the various suspended substances contained in the water, and by removing the suspended substances trapped in the filter medium, An inner cylinder made of stainless steel or FRP (fiberglass reinforced plastic) material and an inner cylinder formed of a plurality of perforated plate members are respectively installed in a drum shape, and the upper and lower fiber yarn fixing plates having a plurality of holes between the outer cylinder and the inner cylinder are formed. Flexible fiber yarns to form a filter layer as a medium to be mounted at equal intervals; Media compression crimping / relaxation operation cylinder for adjusting the pores of the flexible fiber yarn which is the media; A mediator compression / relaxation variable device which is mounted outside the body of the mediator compression / relaxation working cylinder to adjust an internal space of the porous plate; An outer cylinder porous tube and an outer jacket installed over the depth of the filtration layer to uniformly distribute the filtration water / filtration water / backwash water, decrease the filtration resistance, and increase the filtration area; In the filtration process, the raw water introduced through the space in which the media is not compressed is not filtered out between the media compression / relaxation porous plate member and the upper / lower media fixing porous disk member while the media is compressed. Upper and lower backflow discharge diaphragms for discharging; And A backwashing operation cylinder for facilitating desorption of various suspended substances trapped in the media, The lower fiber yarn fixing plate is a filter device using a variable flexible fiber yarn filter layer, characterized in that the backwash air distribution port for uniformly distributing the backwashing air in the entire filtration layer during the backwashing process. The method of claim 1, wherein the median crimp / relaxation porous plate members may form a cylindrical cylinder shape when each of them is adjacent to each other, and each of the adjacent porous plate members may be uneven to reduce its internal space. Filtration device using a variable flexible fiber yarn filter layer, characterized in that made to be cross-linked in the form. The filtration apparatus of claim 2, wherein the fiber yarn pressing / releasing porous plate members are at least eight. The variable flexible fiber yarn filter layer of claim 1, wherein the inflow valve and the outflow valve are opened during the filtration process, and the media compression / relaxation operation cylinder moves downward to compress the media by maximizing the perforated plate. Filtration device using. The method of claim 1, wherein the back pressure crushing / relaxing working cylinder is raised during the back washing process to minimize the perforated plate member, so that the back washing water, the back washing air, and the up and down reciprocating operation of the back washing working cylinder are performed in the relaxed state. Filtration device using a variable flexible fiber yarn filter layer characterized in that to shake off the suspended solids attached to the filter medium by a strong vibration. The filtration apparatus according to claim 1, further comprising an outer jacket and a pipe member to enable the inflow / outflow of the filtration device or the inflow / outflow of the filtration device. The filtration apparatus according to claim 1, wherein the filtration density of the media or the length of the media for pressing / releasing the media can be adjusted to freely control the voids of the media and the quality of the filtered water. The method of claim 1, wherein the body of the filtering device is composed of two cylindrical cylinders, each cylindrical cylinder is formed with a plurality of holes of the variable flexible fiber yarn filter layer, characterized in that the structure is formed to minimize pressure loss. Filtration device.