KR200437511Y1 - Backwashable Filtration Apparatus using Non-motorized Fine Bubbles Feeder - Google Patents

Abstract

      The present invention relates to a filter capable of backwashing using a non-powered microbubble feeding device, and more particularly, the remaining suspended between the composite filtration layers by expanding and flowing the composite filtration layer in the filter using the microbubbles during backwashing. The present invention relates to a filter capable of backwashing using a non-powered microbubble feeder to improve the filtration performance through washing the material and to reduce the backwash water consumption.

A filter capable of backwashing using a non-powered microbubble supply device according to the present invention includes an inlet, a non-powered microbubble supply means configured to supply microbubbles to the backwashing water inlet, and the inlet and the outlet are formed Filter; A composite filtration means including a filter layer made up of various kinds of particles for water filtration in the filter, which is installed under the composite filtration layer and evenly distributes and supplies microbubbles into the filter during backwashing to provide a composite filtration layer. In a filter capable of backwashing using a non-powered microbubble supply device having an equal distribution means for flowing, the non-powered microbubble supply means comprises a portion of the backwash water inlet in the form of a venturi tube to supply fine backwash water. And a non-powered microbubble supply device for supplying bubbles, wherein the equal distribution means comprises a filter network of a cylindrical mesh structure having fine pores so that the microbubbles contained in the backwash water are evenly distributed. do.

Filter, non-powered microbubble feeder, backwash, filter media, filter net

Description

Backwashable Filtration Apparatus using Non-motorized Fine Bubbles Feeder}

1 is a perspective view showing the appearance of a backwashable filter using a non-powered microbubble supply device according to an embodiment of the present invention.

Figure 2 is a partial cutaway side view of a filter capable of backwashing using a non-powered microbubble supply device according to an embodiment of the present invention.

Figure 3 is a partial cutaway side view showing the equal distribution means shown in FIG.

4 is a plan view showing a line I-I of the equal distribution means shown in FIG.

Figure 5 is a graph showing the consumption of backwash water in the filter and the conventional filter capable of backwashing using a non-powered microbubble supply apparatus according to an embodiment of the present invention.

Figure 6 is a graph showing the backwashing time in the filter and the conventional filter capable of backwashing using a non-powered microbubble supply apparatus according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

 1. Filter capable of backwashing using non-powered microbubble feeder

 2. Main Body 5. Inlet

 6. Outlet 8. Manhole

 9. Solenoid valve 10. Observation window

11. Non-powered microbubble supply device 13. Solenoid valve

14. Air vent 16. Combined filtration means

17. Hopper 18. Filter Screen

19. Equal Distribution Means

      The present invention relates to a filter capable of backwashing using a non-powered microbubble feeding device, and more particularly, the suspended particles remaining between the composite filtration layers by expanding and flowing the composite filtration layer in the filter using the microbubbles during backwashing. The present invention relates to a filter capable of backwashing using a non-powered microbubble feeder to improve the filtration performance through washing the material and to reduce the backwash water consumption.

      Generally, the filter used in the water treatment process can be classified into simple filtration treatment and adsorption filtration treatment. According to the flow direction of the fluid flowing into the filter is classified into a downflow type flowing from the top to the bottom and an upflow type flowing from the bottom to the top, it can be divided into gravity and pressure depending on the pressure.

     Conventionally, the downflow filtration method of the type of filter which is simple in structure and is easy to operate is used. In the case of an open filter having a long direction, it is common to determine the backwashing time by using a level gauge to increase the head caused by the increase in the filtration resistance. In addition, in the case of a pressure type downflow filter, a pressure gauge is installed on the influent pipe, and backwashing is performed when the pressure increases above a certain value. However, in the case of a small tower type gravity filter, it is necessary to install the level gauge according to the increase of head to determine the backwashing time, but it is not easy to install in the small filter.

      In general, the backwashing method of washing the filter layer filled in the filter is generally set at a predetermined time interval and backwashing according to the interval, but when the backwashing cycle is set short, the amount of backwashing water is increased. Increasing the amount of consumption, and the media outflow to the outside has a problem that the amount of loss of the media and the backwashing is not performed cleanly.

      In addition, when the filter is operated for a long time, microorganisms and slime layers are formed between the media, and in particular, if a sticky substance is present in the fluid, they cause a mud ball phenomenon in which they aggregate into the media and the mass in the filter. Therefore, the backwashing process may not be performed properly, and in the case of an open filter, a large amount of media may be lost to the outside at a time.

      The present invention was devised to solve the above problems, and the purpose of the present invention is to expand and flow the composite filtration layer in the filter by using the microbubbles supplied from a non-powered microbubble supply device during backwashing, and then between the composite filtration layers. The present invention provides a filter capable of backwashing by using a non-powered microbubble feeder that can improve the filtration performance by washing the remaining suspended substances and reduce the backwash water consumption.

      It is another object of the present invention to provide a backwashable filter using a non-powered microbubble feeder which is structured so that the backwashing water and the microbubble are distributed and supplied evenly under the filter to improve the backwashing efficiency of the filter bed. It is to.

      In order to achieve the above object, the present invention is an inlet, a non-powered microbubble supply means configured to supply the microbubble to the backwash water inlet, and the filter in which the inlet and the outlet are formed to form an appearance; A composite filtration layer including a filter layer made up of various kinds of particles for water filtration in the filter, and a composite filtration layer installed at a lower portion of the composite filtration layer to distribute and supply the fine bubbles evenly into the filter during backwashing. It is characterized in that it comprises a; equal distribution means for flowing.

      According to the present invention, it is preferable that the non-powered microbubble supply means 11 is configured to form a part of the backwash water inlet in the form of a venturi tube so that the microbubbles can be supplied when the backwash water is supplied.

      In addition, according to the present invention, the equal distribution means 19 is preferably provided with a filter mesh of the cylindrical network structure on the lower support plate of the filter so as to distribute the backwash water and the fine bubbles evenly.

      Hereinafter, with reference to the accompanying drawings, a preferred embodiment for a filter capable of backwashing using a non-powered microbubble supply apparatus according to the present invention will be described in detail as follows.

      1 is a perspective view showing a state of a backwashable filter using a non-powered microbubble supply device according to an embodiment of the present invention, Figure 2 is a backwashing using a non-powered microbubble supply device according to an embodiment of the present invention A partial cutaway side view of this possible filter, FIG. 3 is a cross-sectional view showing the equal distribution means shown in FIG. 2, and FIG. 4 is a plan view showing the line I-I of the equal distribution means shown in FIG.

      As shown in FIGS. 1 to 4, the filter 1 capable of backwashing using the non-powered microbubble supply device according to the present invention has an inlet 5a and a microbubble 20 at the backwashing water inlet 5b. ) A non-powered microbubble supply means (11) configured to be supplied with the filter, and the inlet and the outlet are formed to form an appearance; In the filter, a composite filtration means (16) constituting a filter layer for water filtration of contaminated raw water, and is installed in the lower portion of the composite filtration means, evenly distributed and supplied fine bubbles into the filter during backwashing. By forming an equal distribution means 19 for flowing the filtration layer, it is possible to improve the backwashing efficiency and the filtration capacity through the effective backwashing in a short time and to reduce the backwash water consumption.

      The filter (1) capable of backwashing using the non-powered microbubble supply device includes a cylindrical body (2) forming an external appearance, a composite filtration means (16) and an equal distribution means (19) constituting the interior of the filter. It is provided.

      The main body 2 includes a front pipe 4 including an inlet 5a and an outlet 6 for supplying contaminated raw water, a non-powered microbubble supply means 11, a solenoid valve 9, a manhole ( 8), an air outlet 21 and a sight glass 10 are formed.

      The inlet 5a is connected to the inlet pipe 3 of the contaminated raw water, and the contaminated raw water is introduced in the direction of the arrow shown in FIG. 1 through the inlet 5a. The end of the inlet (5a) forms the shape of a hopper (17), a mesh net (18) is provided at the inlet of the hopper 17 is configured so that the filter medium does not flow out. The contaminated raw water introduced through the inlet 5a is supplied, and the supplied contaminated raw water is purified while passing through the combined filtration means 16 and then discharged through the outlet 6.

      In addition, the inlet of the hopper 17 is also an outlet for discharging the backwashing water including the suspended contaminated material during backwashing.

      The non-powered microbubble supply means 11 forms a part of the filter backwash water inlet 5b in the form of a venturi tube to supply the microbubbles 20 simultaneously with the supply of backwash water to the lower part of the filter during backwashing. As it expands and fluidizes, contaminated suspended solids remaining between the particles of the composite filtration layer are discharged to the outside through the backwash water outlet along with the backwash water.

      The non-powered microbubble supply means 11 is installed to operate only during backwashing.

      According to the present invention, the venturi tube-type non-powered microbubble supply means 11 operates the supply pump (not shown) to supply backwash water to the inlet port 11a and the outlet port 11b of the venturi tube of the venturi tube. The negative pressure is generated due to the pressure difference between the inlet and the outlet so that air is sucked into the central inlet 12 of the venturi tube without the power supplied from the outside.

The solenoid valve 13 is provided and installed at the central inlet 12 of the venturi tube, and when the back washing is performed, the solenoid valve is opened and external air flows into the central inlet 12, and when the back washing is completed, the solenoid valve ( 13) is configured to close.

      In addition, the central suction port 12 is connected to a device (not shown) for the injection of ozone is formed to remove the slime layer and the slime layer in the presence of the microorganism and the slime layer between the filter medium of the composite filtration layer is filtered It will play a role in improving efficiency.

      The solenoid valve (9) is composed of five installed, the first valve (9a) and the fourth valve (9d) is opened during the water filtration, the second valve (9b) and the third valve (9c) when backwashing When opened, the first valve 9a and the fifth valve 9e are opened.

      The manhole 8 is provided in the main body 2a, the upper hard plate 2b and the lower hard plate 2c of the filter and is provided to open and close at the time of filling of the filter and during maintenance.

      An air vent 14 connected to an air outlet is formed in the upper plate so that air present in the filter is separated from the fluid through the air vent and discharged.

      The observation window 10 formed of a reinforcing material withstands pressure is installed on the outer surface of the main body of the filter to check the lamination state of the filtration layer filled in the filter, and the filtration progress state of the surface of the filter layer during water filtration and the filtration during backwashing. It is possible to check the expansion state of the layer.

       The interior of the filter is provided with a composite filtration means 16 and an equal distribution means 19.

      The combined filtration means 16 is laminated in the filter 2 to a predetermined thickness to filter the contaminated raw water. The thickness and particle size of the composite filtration layer are determined by the desired turbidity of the contaminated suspended solids, and the media constituting the composite filtration means are activated carbon 16a, anthracite 16b, sand 16c and gravel 16d. It is composed of a composite filtration layer, such as), not limited to this, various particulate media that can filter the contaminated raw water may be used. The treated water purified through the combined filtration means is introduced into the equal distribution means 19.

      According to the present invention, the filter filling rate of the composite filter layer is preferably 0.5 to 0.8 of the volume of the filter (2).

      In addition, according to the present invention, the respective filter mixing ratio constituting the composite filtration layer is formed in the range of 0.4 to 0.5 activated carbon, 0.2 to 0.3 of sand, 0.1 to 0.3 of sand, 0.1 to 0.2 of gravel, respectively It is preferable to control the amount of each filling in the above range so that the sum does not exceed 1.0.

      The equal distribution means 19 is composed of a filter net (19b) and the lower support plate (19a) of the cylindrical network structure, the filter net having the cylindrical network structure is formed to be easily attached to the lower support plate (19a) in the filter It is. The equal distribution means 19 passes the purified water through the composite filtration layer and serves to expand the composite filtration layer by equally distributing and supplying microbubbles simultaneously with the supply of the backwash water during backwashing. .

      In addition, according to the present invention, it is preferable that a plurality of filter meshes 19b of the cylindrical mesh structure are arranged on the surface of the circular lower support plate 19a.

      When the backwash water is discharged in the direction of the arrow shown in FIG. 4 when the backwash is provided with the cover part 22 on the upper part of the filter net 19b, a part is ejected through the vertical ejection hole 28 of the cover part and the part is By hitting the inner surface of the cover part and ejecting it horizontally along the upper surface through the horizontal ejection hole 26, the composite filtration layer laminated on the upper layer and the side surface of these filter nets 19b can be efficiently floated and washed at the same time. to be.

      The inner mesh net 29 is formed on the inner surface of the cover part, and the outer net 24 is formed on the surface of the horizontal ejection hole 26 to prevent the inflow of media stacked in the filter.

      According to the present invention, the outer mesh 24 of the cylindrical mesh structure and the inner mesh network 29 of the cover part use a filter mesh size (10 to 100 mesh) in which the media of the composite media layer stacked in the filter does not flow out. It is preferable.

      In addition, according to the present invention, it is preferable that the vertical ejection hole 28 cross-sectional area of the cover portion 22 is formed to be in the range of 0.1 to 0.3 of the horizontal ejection hole cross-sectional area.

      The outlet 7 is connected to the hopper 17 which is an inlet of contaminated raw water during water filtration and an outlet for backwashing, and a filtration network is installed at the inlet of the hopper. The raw water is introduced during water filtration, and backwashing water including foreign substances desorbed during backwashing is discharged to the hopper. In addition, the expanded media flowing in the backwashing process is caught by the filter net installed in the hopper-type outlet to prevent leakage.

       Next, the operation of the backwashable filter using the non-powered micro-bubble supply device according to the present invention having such a configuration is as follows.

      As shown in FIG. 1, the filter 1 capable of backwashing using the non-powered microbubble supply device according to the present invention is connected to a power source by being operated by a controller (not shown).

      The operation procedure of the filter is first made of water filtration, and then, when the blockage of the filter layer occurs, the back washing process proceeds in the order of back washing, precipitation, washing. When the backwashing process is completed, the water filtration process is performed again, and the backwashing process and the water filtration process as described above are repeated periodically.

      First, in the case of water filtration, the first valve 9a and the fourth valve 9d, which are the solenoid valves 9 installed on the front of the filter 2, are opened, and when power is supplied to the supply pump (not shown), the inlet port 5a ), The contaminated raw water flows into the upper part of the filter.

      When the raw water is introduced, the air present in the filter is separated from the fluid through the air vent 14 connected to the air outlet 21 and discharged, and the raw water containing the contaminated suspended solids is filtered through the composite filtration layer. After being purified, it is discharged through the outlet.

      As the filtration proceeds for a predetermined time as described above, foreign matter adheres to the filtration layer, so that the filtration efficiency decreases, the pressure increases, and the flow rate decreases, and backwashing is performed by supplying backwash water and fine bubbles from the lower part of the filter. Done.

      In addition, when backwashing, valves 2b and 9c which are solenoid valves 9 installed on the front of the filter are opened, and when power is supplied to the supply pump (not shown), backwash water inlet 5b. The backwash water and the microbubbles 20 are supplied through the equal distribution means installed in the lower part of the filter by the non-powered microbubble supply means 11 installed in the filter.

      When the backwashing water and the microbubble 20 are supplied to the lower part of the filter, the composite filtration layer expands and flows at the same time while the foreign matter accumulated in the filtration layer is desorbed and washed. Ejected through 17.

      At this time, the filtration layer which expands and flows in the backwashing process is mixed and disturbed, but when it returns to the normal filtration state after backwashing, the gravel layer 16d having the largest specific gravity is first placed in the filter by the specific gravity difference of each media. The lower portion is lowered, and then the sand layer 16c, the anthracite layer 16b, and the activated carbon layer 16a sit in order to form a seat. The composite filtration layer naturally forms a filtration layer according to its position even if it is not artificially controlled.

      When the backwashing process is completed, while the first valve 9a and the fifth valve 9e, which are the solenoid valves 9 installed on the front of the filter, are opened, washing water is supplied and the suspended solids remaining in the filter layer are discharged. Will be discharged to outside.

      On the other hand, the experiment was performed as follows to quantitatively confirm the effect as described above.

      5 and 6 are graphs showing the consumption and backwashing time of the backwashing water in the filter (②) capable of backwashing only and the backwashing water using the non-powered microbubble feeding device according to the present invention. .

      The backwash water is supplied to each of the filter (②) capable of backwashing and the filter (①) supplied only backwashing water using the non-powered microbubble supply device supplying the backwashing water and the microbubbles as shown in FIG. The backwashing water consumption and the turbidity of the backwashing effluent were analyzed to determine the backwashing completion time, and the experimental results are shown in FIGS. 5 and 6. 5 and 6 show the results of comparing the backwash water consumption and the backwash completion time. As shown in FIG. 5 and FIG. 6, the backwash water consumption of the filter (②) capable of backwashing using the non-powered microbubble supply device configured according to the present invention consumes less than the filter (①) supplied with only the backwash water. It can be seen that the completion time of the backwash is also shortened. Therefore, in the filter capable of backwashing using the non-powered microbubble supply device configured according to the present invention, the microbubbles are supplied during backwashing to filter the suspended solids remaining between the composite filtration layers through effective washing in a short time. At the same time, it can be seen that the backwash water consumption can be reduced.

As described above, the present invention has been described in detail with reference to preferred embodiments, but the present invention is not limited to the above embodiments, and various modifications may be made by those skilled in the art within the technical idea of the present invention. Is obvious.

      As described above in detail, the filter capable of backwashing using the non-powered microbubble supply device according to the present invention expands the composite filtration layer in the filter by using the microbubbles supplied from the non-powered microbubble supply device during backwashing. This improves the filtration capacity through the effective washing of suspended solids remaining in the composite filtration layer in a short time and at the same time reduces the consumption of backwash water, and enables the operator to easily handle and operate the product, thereby reducing power consumption. There is a number.

Claims (6)

       An inlet, a non-powered microbubble supply means configured to supply microbubbles to the backwash water inlet, and a filter in which the inlet and the outlet are formed to form an appearance; Compound filtration means including a filter layer made of several kinds of particles for water filtration in the filter, the composite filtration layer is installed in the lower portion of the composite filtration layer and evenly distributes and supplies microbubbles into the filter during backwashing In a filter capable of backwashing using a non-powered microbubble supply device having an equal distribution means for flowing, the non-powered microbubble supply means comprises a portion of the backwash water inlet in the form of a venturi tube to supply backwash water. A non-powered microbubble supply device for supplying microbubbles is provided, and the equal distribution means includes a filter network having a cylindrical mesh structure having fine pores so that the microbubbles included in the backwash water are evenly distributed. Filter capable of backwashing using a non-powered microbubble feeder.        The method of claim 1,        The non-powered microbubble supply means is a filter capable of backwashing using a non-powered microbubble supply device, characterized in that it is configured in the form of a venturi tube to control the inlet air and supply of microbubbles.        The method of claim 1,        The central suction port of the non-powered microbubble supply means is a filter capable of backwashing using a non-powered microbubble supply device, characterized in that it is configured to inject ozone gas to kill and detach the microorganisms and slime layer between the filter medium. .        The method of claim 1,        The equal distribution means is a filter capable of backwashing using a non-powered microbubble supply device, characterized in that the lower support plate and the filter network of the cylindrical network structure is formed to equally distribute the backwash water and the micro-bubbles.        The method of claim 1,        The inlet is a filter capable of backwashing using a non-powered micro-bubble supply device, characterized in that the filter net is formed on the hopper to prevent the outflow of the filter medium during backwashing.        The method of claim 1, The main body of the filter is a filter capable of backwashing using a non-powered micro-bubble supply device, characterized in that the observation window is formed to be able to check the laminated state of the packed filter layer, the filtration progress state and the expansion state of the filter medium layer.

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