KR100771428B1 - Filtering apparatus for waste-water treatment - Google Patents

Abstract

The present invention can remove the fine particle contaminants in the filtration process, such as sewage and waste water can improve the filtration efficiency and easy backwashing, by using a plurality of filtration unit separated into a plurality of segments, The present invention relates to a filtration device for wastewater treatment that is easy to repair and replace in case of contamination.

Wastewater treatment filtration device according to the present invention by forming the filter medium in the longitudinal direction of the water flow is possible to remove the fine particle contaminants in the filtration process, such as sewage and wastewater can not only improve the filtration efficiency but also easy backwashing There is a remarkable effect that can be used semi-permanently filtration device.

Wastewater treatment; filter; Backwash

Description

FILTERING APPARATUS FOR WASTE-WATER TREATMENT}

1 is an enlarged cross-sectional view of a filter main body of a filtration device for wastewater treatment according to the present invention;

2 is a perspective view of a filter medium according to the present invention;

3 is a plan view of the upper perforated plate according to the present invention.

4 is a bottom view of the lower porous plate according to the present invention.

5 is a cross-sectional view showing a bonding state of the upper porous plate and the filter medium according to the present invention.

Figure 6 is a cross-sectional view showing a bonding state of the lower porous plate and the filter medium according to the present invention.

Figure 7 is a cross-sectional view for explaining the operation during filtration of the filtration device for wastewater treatment according to the present invention.

Figure 8 is a cross-sectional view for explaining the operation during the back washing of the filtration device for wastewater treatment according to the present invention.

*** Explanation of symbols on the main parts of the drawing ***

10 inflow pipe 12 backwash pipe

14: first outflow pipe 16: second outflow pipe                 

18: rinse pipe 20: inlet valve

22 backwash valve 24 first outlet valve

26: second outflow valve 28: rinse valve

30: filter body 32: upper perforated plate

34: lower porous plate 40: filtration unit

50: piston 52: pressure switch

54: air nozzle 60: control panel

62: pump 70: raw water tank

80: treatment tank

The present invention relates to a filtration device for wastewater treatment, specifically, it is possible to remove the fine particle contaminants in the filtration process, such as sewage and wastewater, can improve the filtration efficiency, easy backwashing and separation into multiple segments The present invention relates to a filtration device for wastewater treatment that is easy to repair and replace when a filtration unit breaks down or is contaminated by using a plurality of filters.

In general, a filtration device is used in the treatment process of sewage and wastewater, and a conventional sand filter, a cartridge filter, and anthracite are typically used as the filtration device.

However, the filtration device of the sand filter, cartridge filter, anthracite and the like has one or more disadvantages in the quality of the filtered filtrate, backwashing efficiency and the reuse of the media, and also because of the cake phenomenon, the replacement cycle of the filter is short. There was a problem that facility cost is expensive.

In recent years, in order to improve such a conventional problem, a deep filtration system using a filter material of fiber yarn has been proposed to improve the water quality of the filtered filtrate compared to the various conventional filtration apparatus, and to enable installation in a narrow space And lowered the facility cost.

However, in the above method, the wastewater is not filtered smoothly due to uneven dispersion of the filter medium layer overlapped by pressure, so that the filtration efficiency is reduced, and a piston installed to apply a constant pressure to the inside of the filtering device is installed inside the filtering device. If the filtration device was not working properly, there was a hassle to lift and reload it.

The present invention has been made to solve the above problems, and an object of the present invention is to remove the fine particle contaminants in the filtration process, such as sewage and wastewater to improve filtration efficiency and easy backwashing filtration for wastewater treatment To provide a device.                         

In addition, another object of the present invention is to configure the filtration unit in the form of a plurality of segments not only easy to repair in case of failure of the filtration unit, but also if the filtration unit is heavily contaminated waste water that can reduce the maintenance cost by replacing only the filtration unit of the segment It is an object to provide a filtration device for treatment.

In order to achieve the above object, a filtration device for wastewater treatment according to the present invention, a wastewater treatment filtration device for introducing and filtering wastewater, the filter body for filtration and discharge the wastewater introduced and the wastewater; An inlet pipe connected to an upper end of the filter main body to introduce the waste water, and having an inlet valve for opening / blocking the flow of the waste water; A backwash pipe installed to connect the inlet pipe and the lower part of the strainer main body to introduce a wash water for washing the strainer main body, and a backwash valve for opening / blocking the flow of the wash water; A first outlet pipe connected to a lower end of the filter body to discharge filtered water and having a first outlet valve for opening / blocking the flow of the filtered water; And a second outlet pipe connected to the other upper end of the filter body to discharge the washing water passing through the filter body, and having a second outlet valve for opening / blocking the flow of the discharged washing water. A main body, the piston is installed on the upper end to apply pressure to the inside; An upper perforated plate having a flat plate shape and connected to a lower end of the piston and having a plurality of through-holes vertically flowing through the upper and lower sides by the pressure of the piston; A lower porous plate having a flat plate shape, fixedly spaced apart from the lower portion of the upper porous plate by a predetermined distance, and having a plurality of through-holes formed therethrough; And a plurality of filtration units connected in a longitudinal direction between the upper and lower porous plates, wherein each filtration unit is mounted on a bottom surface of the upper porous plate, and includes a first cylindrical end having a plurality of through holes. A second cylindrical end having a plurality of through holes formed on an upper surface of the lower porous plate; And one end is fixed along the side circumference of the first end of the cylinder, and the other end is fixed along the lateral circumference of the second end of the cylinder, and includes a plurality of thread bundle-shaped filter media connected in the vertical direction. And a gap of a predetermined interval is formed between the yarns in the longitudinal direction constituting the filter medium, and an air nozzle is installed at the lower end of the filter main body to introduce air toward the filter unit, and the lower end of the filter main body. And a rinse pipe connected to the outlet pipe to discharge the washing water rinsing the filter body, and having a rinse valve for opening / blocking the flow of the washing water.

Preferably, the filter medium is a chemical fiber yarn material comprising polypropylene and / or nylon yarn, so as to consist of braided and / or unwoven single yarn. More preferably, the filtration device for wastewater treatment is connected to the lower end of the filter body, and rinsed with a rinse valve for flowing out the washing water flowing through the inlet pipe to rinse the filter body and opening / blocking the flow of the washing water. Include more pipes.

Hereinafter, with reference to the accompanying drawings will be described in detail the advantages, features and preferred embodiments of the present invention.

1 is an enlarged cross-sectional view of a filter main body of a filtration device for wastewater treatment according to the present invention. Figure 2 is a perspective view of the filter medium according to the present invention, Figure 3 is a plan view of the upper porous plate according to the invention, Figure 4 is a bottom view of the lower porous plate. 5 is a cross-sectional view showing a coupling state of the upper porous plate and the filter medium according to the present invention, Figure 6 is a cross-sectional view showing a bonding state of the lower porous plate and the filter medium according to the present invention. And, Figure 7 is a cross-sectional view for explaining the operation during the filtration of the wastewater treatment filtration device according to the present invention, Figure 8 is a cross-sectional view for explaining the operation during backwashing the filtration device for wastewater treatment according to the present invention. Referring to Figures 1 to 8 will be described below the internal structure of the filter body of the filtration device for wastewater treatment according to the present invention.

The filtration apparatus for wastewater treatment according to the present invention is connected to a filter main body 30 through which filtration of wastewater is introduced, an inlet pipe 10 connected to one upper end of the filter main body to introduce wastewater, and connected to an inlet pipe to a filter main body. A backwash pipe 12 for introducing the washing water, a first outflow pipe 14 connected to the lower end of the filter main body to discharge the filtered water, and a second discharge pipe connected to the other upper end of the filter main body to discharge the washing water to clean the filter main body. And a rinse pipe 18 connected to the outlet pipe 16 and the lower end of the filter body to discharge water rinsing the filter body. In addition, the filtration device for wastewater treatment according to the present invention, the piston 50 for applying pressure to the inside of the filter body 30, the pressure switch 52 for measuring the pressure inside the filter body, the air flowing in the air into the filter body And a nozzle 54, a control panel 60 for controlling the operation of the filtration device for wastewater treatment, and a pump 62 for raising the wastewater to the filter body. In addition, the filtration device for wastewater treatment according to the present invention further includes a manhole 19 so that an operator can directly enter the inside of the filter body to inspect the inside of the filter body 30.

The inlet pipe 10 according to the present invention is provided with a connection between the pump 62 and the upper end of one side of the filter main body 30 to inflow the waste water of the raw water tank 70 drawn up by the pump into the filter main body. . The inlet pipe 10 also includes an inlet valve 20 to block / open the flow of wastewater.

The backwash pipe 12 according to the present invention is provided while connecting the lower end of the inlet pipe 10 and the filter main body 30 and introduces the washing water introduced through the inlet pipe into the filter main body. The backwash pipe includes a backwash valve 22 to block or open the flow of wash water.

The first outflow pipe 14 according to the present invention is for discharging the filtered water and is provided between the lower end of the filter main body 30 and the treatment water tank 80. The first outlet pipe 14 also has a first outlet valve 24 for blocking or opening the flow of filtered water.

The second outlet pipe 16 according to the present invention is connected to the upper end of the other side of the strainer body 30, that is, the upper region where the inlet pipe 10 is not connected, and discharges the washing water that washes the strainer body. The discharged washing water is introduced back into the raw water tank (70). In addition, the second outlet pipe 16 has a second outlet valve 26 for blocking / opening the flow of the washing water.

The rinse pipe 18 according to the present invention is connected to the lower end of the strainer body as a pipe for outflowing water rinsing the strainer body 30. That is, after the washing is completed, the washing water is introduced through the inlet pipe 10 rather than the backwashing pipe 12 to rinse the filter body, and the water rinsing the filter body is discharged through the rinse pipe 18. At this time, the water discharged through the rinse pipe also flows into the raw water tank (70). In addition, the rinse pipe 18 also includes a rinse valve 28 for blocking / opening the discharge flow of the rinsed water.

The filter main body 30 according to the present invention is a component that discharges through the first outflow pipe 14 after filtering wastewater introduced through the inflow pipe 10. The filter main body 30 has a piston 50 installed at the upper end of the filter main body to apply pressure to the filter main body, an upper perforated plate 32 connected to the piston and flowing by pressure, and a lower part spaced apart from the upper porous plate by a predetermined distance. It includes a lower perforated plate 34 and a plurality of filtering portion 40 connected in the longitudinal direction between the upper and lower porous plate and fixed to the. In this case, the filtration unit 40 is provided in plural in the form of a segment in the longitudinal direction between the upper porous plate 32 and the lower porous plate 34. That is, the filter unit is not integrally formed, and the plurality of filter units are fixedly installed between the upper porous plate and the lower porous plate.

The piston 50 according to the present invention is a component that applies pressure to the inside of the filter main body 30, and the upper porous plate 32 is lowered by the pressure applied by the piston. On the other hand, the filter body 30 further includes a pressure switch 52 for detecting the strength of the pressure inside the filter body. When the wastewater is filtered in the filter main body 30, the waste water is stacked on the filter unit 40, thereby increasing the pressure inside the filter body. Therefore, the pressure switch 52 transmits a signal for the control panel 60 when the pressure inside the filter main body rises above a predetermined pressure to perform a process of cleaning the filter unit.

The upper perforated plate 32 and the lower perforated plate 34 according to the present invention has a plurality of through holes 33 and 35 that form a flat plate shape and penetrate up and down. Therefore, the wastewater introduced through the inflow pipe 10 or the washing water introduced through the backwash pipe 12 flows out in a predetermined direction through the plurality of through holes 33 and 35.

The filtration unit 40 according to the present invention is mounted between the upper porous plate 32 and the lower porous plate 34 to filter the wastewater flowing through the upper porous plate and then discharge it to the lower porous plate. The filtration unit 40 is connected to the first end 42 mounted to the upper perforated plate 32, the second end 44 mounted to the lower perforated plate, and is connected longitudinally between the first end and the second end to the wastewater. It consists of a filter medium 46 for filtering. At this time, the upper porous plate 32 and the first end 42, and the lower porous plate 34 and the second end 44 are fixed to each other through the fastening means (42a, 44a) such as screws. In addition, the first end 42 and the second end 44 are formed with a plurality of through-holes formed to penetrate up and down to allow the wastewater to flow in and out. The filter medium 46 according to the present invention is a plurality of yarn bundles connected in a longitudinal direction between the first end 42 and the second end 44, to use chemical fiber yarns such as polypropylene or nylon. In addition, the filter medium 46 is intended to use single yarn fibers that are not braided or woven. In this case, when the backwash is unfolded by using washing water and air together with backwashing, the filter medium may be used semi-permanently.

The density and the filtration efficiency of the filter medium according to the present invention are adjusted according to the amount of the filter medium and the thickness of each medium constituting the filter medium, that is, the filter medium. In addition, when the piston 50 pressurizes down during filtration of the wastewater, the upper porous plate 32 moves downward to press down the filtration unit 40. At this time, since the lower porous plate 34 is in a fixed state, the first end 42 and the second end 44 of the filtration unit 40 are squeezed together, and thus the filter medium 46 is entangled with each other, so that the interval between the filter mediums becomes dense. . Therefore, the filtration efficiency of wastewater becomes high. On the other hand, if you want to backwash the filter medium 46 to remove the pressure of the piston 50, the upper porous plate 32 is raised. Therefore, the upper perforated plate pulls up the filtration unit 40 to expand the filter medium 46 and widen the gap between the filter mediums, thereby facilitating backwashing.

Referring to the operation of the wastewater treatment filtration device according to the present invention.

First, the operation of the filtration of the wastewater treatment filtration device according to the present invention will be described with reference to FIG.

Operating the control panel 60 to filter the wastewater activates the pump 62 and opens the inlet valve 20 and closes the backwash valve 22. Therefore, the wastewater contained in the raw water tank 70 is drawn up by the pump and flows into the filter main body 30 through the inflow pipe 10. On the other hand, since the backwash valve is closed, the waste water does not flow into the backwash pipe 12 but is only introduced into the upper portion of the filter body 30 through the inlet pipe 10.

When the waste water flows into the filter main body 30, the piston 50 is operated to apply pressure to the lower part, and thus the upper end plate 32 connected to the piston is lowered, so that the first end of each filter part 40 is lowered. Press (42) down. As described above, since the lower porous plate 34 is in a fixed state, each filter part 40 is in a state of being compressed between the upper and lower porous plates. Therefore, the filter medium 46 made of fiber yarns such as polypropylene connected to each filter unit 40 in the longitudinal direction is pressed and entangled with each other, so that the interval between the filter medium 46 becomes very tight.

Wastewater introduced into the filter main body 30 passes through a plurality of through holes 33 formed in the upper perforated plate 32 and then flows into the yarn bundle of the filter medium 46 to be filtered while passing between the very dense yarns. do. As described above, the filter medium 46 of each filter unit 40 is unevenly overlapped with each other by the upper porous plate 32 lowered by the pressure of the piston 50, and the filter medium 46 is vertically (vertically). Direction) to prevent the wastewater from being filtered smoothly due to the difference in the density of the overlapping filter media and to facilitate the passage of water, thereby improving the filtration and backwashing efficiency described later. Water filtered while passing through the filter medium 46 is discharged through the plurality of through holes 35 of the lower porous plate 34.

Water discharged from the lower porous plate 34 is discharged through the first outflow pipe 14 to be contained in the treatment tank (80). At this time, the first outlet valve 24 is opened and the second outlet valve 26 and the rinse valve 28 is of course blocked.

On the other hand, when the wastewater is filtered through the wastewater treatment filtration device according to the present invention, since the wastewater is stuck between the filter medium 46, the filter medium 46 is contaminated (clogging) when the wastewater treatment filtration device is operated for a long time. The efficiency can be reduced. Therefore, the pressure applied to the filtration unit 40 applied by the piston 50 is increased to increase the air gap of the filter medium 46, and then clean water (wash water) is introduced to backwash the contaminated filter medium.

Hereinafter, with reference to Figure 8 will be described the operation during the backwash of the filtration device for wastewater treatment according to the present invention.

When the filter medium 46 is contaminated due to wastewater filtration for a long time, since the wastewater introduced into the filter main body 30 is not discharged smoothly, the pressure inside the filter main body increases. The pressure switch 52 detects the pressure inside the filter main body during the operation of the filtration device for wastewater treatment, and transmits a signal to the control panel 60 to start the backwashing process when the pressure inside the filter main body exceeds a predetermined level. .

The control panel 60 closes the inlet valve 20 and the first outlet valve 24 and opens the backwash valve 22 and the second outlet valve 26. In addition, after the pressure of the piston 50 is released, backwashing is performed for the set time of the timer in the control panel. At this time, of course, it is also possible to raise the piston up without simply releasing the pressure of the piston.

When the wash water is introduced through the inlet pipe 10, the inlet valve 20 is closed and the backwash valve 22 is open, so the wash water is introduced into the lower portion of the filter body 30 through the backwash pipe 12.

The washing water introduced into the filter main body 30 passes through the plurality of through holes 35 of the lower porous plate 34, and then flows into each filtering part 40 in which waste water residues are accumulated. At this time, the piston 50 is raised by the water pressure of the washing water and the upper porous plate 32 connected to the piston is lifted along the piston, so that the interval between the filter medium of each filter unit 40 is widened. Thus, the washing water washes away the waste water residue while passing between the yarn bundles of the filter medium 46. On the other hand, by introducing the air through the air nozzle 54 with the inflow of the wash water to improve the backwashing efficiency by washing the filtration unit 40 by mixing the wash water and air.

The washing water passing through each filtration part 40 passes through the plurality of through holes 33 of the upper porous plate 32 and then is discharged through the second outflow pipe 16. The water discharged through the second outflow pipe 16 again flows into the raw water tank 70 to undergo filtration.

After the backwashing is performed during the set time of the timer of the control panel 60, the filter body 30 is rinsed with washing water. To this end, the backwash valve 22 and the second outlet valve 26 are closed and the inlet valve 20 and the rinse valve 28 are opened. Therefore, the washing water flows into the upper part of the filter main body 30, and is washed through the rinse pipe 18 after washing the inside of the filter main body and the upper perforated plate, the lower perforated plate and each filter. The discharged water flows back into the raw water tank 70 through the second outflow pipe 16 and undergoes filtration. By performing the rinsing process after backwashing as described above, the washing efficiency of the filter medium 46 may be further improved, and thus the filtering efficiency of the wastewater treatment filtration apparatus may be further improved.

When the backwashing process is completed as described above, pressure is applied to the piston 50 to squeeze each filtration unit 40, close the rinse valve 28, and open the first outlet valve 24. Next, the pump 62 is operated to perform filtration of waste water.

On the other hand, when the filtration apparatus for wastewater treatment according to the present invention is used for a long time, some of the filtration units 40 may be severely contaminated and thus may not be able to remove contaminated debris by backwashing. In this case, the filtration of the wastewater is performed after replacing only the filtration unit with a high pollution without having to replace the entire filtration unit 40.

As described above, the filtration device for wastewater treatment according to the present invention can improve the filtration efficiency by forming the filter medium in the longitudinal direction in which water flows to remove microparticle contaminants in the filtration process, such as sewage and wastewater. In addition, there is a remarkable effect that can be used semi-permanently because the backwashing is easy.

In addition, by placing the piston outside the filter, it is possible to quickly repair in case of breakdown of the filter device, thereby reducing the waste of manpower and costs.

In addition, by providing a plurality of filtration unit in the form of a longitudinal segment rather than an integral one, if the contamination of some filtration unit is too severe, only the filtration unit can be replaced without replacing the entire filtration unit, thereby reducing the maintenance cost.

Although preferred embodiments of the invention have been described using specific terms, such description is for illustrative purposes only, and the invention is not limited thereto, and various changes and modifications within the spirit and scope of the following claims It should be understood that changes can be made.

Claims (3)

A wastewater treatment filtration device for introducing wastewater and filtering the wastewater, A filter main body for introducing the waste water and filtering the discharged waste water; An inlet pipe connected to an upper end of the filter main body to introduce the waste water, and having an inlet valve for opening / blocking the flow of the waste water; A backwash pipe installed to connect the inlet pipe and the lower part of the strainer main body to introduce a wash water for washing the strainer main body, and a backwash valve for opening / blocking the flow of the wash water; A first outlet pipe connected to a lower end of the filter body to discharge filtered water and having a first outlet valve for opening / blocking the flow of the filtered water; And A second outlet pipe connected to the other upper end of the strainer body to discharge the wash water passing through the strainer body, and having a second outlet valve for opening / blocking the flow of the discharged wash water; The filter body, A piston installed at the top to apply pressure to the inside; An upper perforated plate having a flat plate shape and connected to a lower end of the piston and having a plurality of through-holes vertically flowing through the upper and lower sides by the pressure of the piston; A lower porous plate having a flat plate shape, fixedly spaced apart from the lower portion of the upper porous plate by a predetermined distance, and having a plurality of through-holes formed therethrough; And It includes a plurality of filtration unit is installed in the longitudinal direction between the upper and lower porous plate, Each said filtration part, A first cylindrical end portion having a plurality of through holes formed on a bottom surface of the upper porous plate; A second cylindrical end having a plurality of through holes formed on an upper surface of the lower porous plate; And One end is fixed along the lateral circumference of the cylindrical first end, the other end is fixed along the lateral circumference of the second cylindrical end, and comprises a plurality of thread bundle-shaped filter media connected in the vertical direction, A gap of a predetermined gap is formed between each yarn in the longitudinal direction constituting the filter medium, An air nozzle is installed at the lower end of the filter main body to introduce air toward the filter unit. It further comprises a rinse pipe connected to the lower end of the filter body is introduced through the inlet pipe to discharge the wash water rinsing the filter body, and provided with a rinse valve for opening / blocking the flow of the wash water. Filtration device for wastewater treatment. The method of claim 1, The filter medium, A chemical fiber yarn material comprising polypropylene and / or nylon yarn, the filter device for wastewater treatment characterized in that the braided and / or non-woven single yarn. delete

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