KR101036018B1 - Filter for wastewater treatment and filter set using it - Google Patents

Abstract

PURPOSE: A wastewater pollutant filter and a filtration apparatus using thereof are provided to reduce the maintenance cost of a filter by the operation of a cleaning unit using inflowing wastewater. CONSTITUTION: A wastewater pollutant filter comprises a housing(1), a filter unit(2) installed in the inside of the housing for filtering wastewater, and a cleaning unit(3) rotating by the inflowing wastewater for separating pollutants from the inside of the filter unit. The cleaning unit includes a framework(31), an impact plate(32) connected to the framework for generating the rotational force to the framework by the impact of the wastewater, and a brush mounted on the outer surface of the framework.

Description

Filter for wastewater treatment and filter set using it {filter for wastewater treatment and filter set using it}

The present invention relates to a filter for filtering contaminants contained in sewage and a filtration device using the filter, and in particular, to improve the filtration efficiency of non-point pollutants contained in the initial rainfall.

In general, pollutants can be classified into point sources and nonpoint sources. Point pollutants are easy to identify pollutants to be treated because of their clear outflow paths, and they can be predicted during the year due to relatively small seasonal effects. It is easy to establish treatment measures such as the design of the facility and the operation plan of the facility. This includes wastewater and household sewage from factories, manure treatment plants and livestock farms.

On the other hand, non-point source is difficult to identify pollutant to be treated because the outflow path of pollutant is not clearly distinguished, and it is difficult to design treatment facility and maintain its facility because the amount of generation is largely dependent on weather conditions such as precipitation. . These include land, roads, rice fields, fields, forests and air pollutants.

As urbanization and industrialization progress, land development has accelerated, and the area of impermeable layers such as land, roads, and parking lots has increased, so the impact of nonpoint sources on the water quality of rivers and lakes has increased. Specifically, contaminants such as suspended soils that flow out with rainfall, nutrients such as nitrogen or phosphorus, and heavy metals with high concentrations are difficult to collect and treat, thus contaminating the water quality by entering the stream without special treatment. In many cases, the ecosystems of rivers are rapidly destroyed.

Non-point pollutant treatment facilities according to the prior art can be broadly classified into natural type and device type facilities. Natural facilities include reservoirs such as ponds or reservoirs, infiltration facilities such as infiltration trenches or infiltration reservoirs, vegetation facilities such as vegetation filtration or vegetation channels, and artificial wetlands. Apparatus-type facilities include filtration-type facilities, vortex-type facilities, screen-type facilities, flocculation and sedimentation treatment facilities, and biological treatment facilities. In Korea, natural facilities are limited in their use due to difficulties in securing land. In addition, device-type facilities require dredging of other sediments, which is contaminated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has an object of increasing the filtration treatment efficiency of contaminants and making maintenance of sediment dredging and the like more convenient than before. In particular, it has the purpose of increasing the filtration treatment efficiency of non-point pollutants contained in the sewage at the beginning of rainfall.

In accordance with an embodiment of the present invention, a housing, a filter unit for filtering a contaminant contained in the introduced sewage, and rotated by the sewage flowing into the filter unit, are provided inside the housing, and the filter unit. And a washing unit for detaching the contaminants attached to the inner side, wherein the washing unit has a frame frame rotated to be spaced apart from the inner side of the filter unit, and has a height corresponding to the height of the inlet of the sewage formed on the inner side of the filter unit. Sewage contaminant filter connected to the frame frame, the impingement plate hits the impingement to generate a rotational force to the frame frame and is mounted on the outer surface of the frame frame, the contaminant filter of the sewage comprising a brush in contact with the inner surface of the filter portion To present.

In another embodiment, the housing is provided in the housing, the filter unit for filtering the contaminants contained in the introduced sewage and the sewage introduced into the filter unit, the rotation is attached to the inner surface of the filter unit And a washing unit for desorbing contaminants, wherein the washing unit is connected to the rotating shaft, which is erected at the center of the circular cross section of the filter unit, and is connected to the rotating shaft and is spaced apart from the inner surface of the filter unit, and the filter unit. It is connected to the rotating shaft at a height corresponding to the height of the inlet of the sewage formed on the inner surface, the impingement is introduced into the collision plate and the spiral frame to generate a rotational force on the spiral frame, the filter is provided on the inner surface Present a contaminant filter of sewage, including the brush that comes in contact.

Here, the outlet through which the sewage passing through the filter unit is discharged to the outside may be located lower than the inlet.

The filter unit may further include a trap unit detachably connected to an open lower portion of the filter unit and containing a pollutant filtered from the filter unit.

In addition, the upper portion of the filter portion is formed with an extra space for collecting the sewage overflowing the filter portion, it may further include an emergency drain that is in communication with the extra space.

At this time, the sewage passing through the filter unit may be configured to communicate with the emergency drain line to discharge into the water system.

On the other hand, it is provided with a plurality of contaminant filter of the filthy water of the above-described plural different in series, and the filthy water passing through the filter portion of the contaminant filter of filthy water of the filthy water located at the top of the contaminant filter of the other filthy water The pores of the filter part which flows into the filter part and provided in the contaminant filter of filthy water located in the upper part present a contaminant filtering device of filthy water larger than the pores of the filter part provided in the contaminant filter of filthy water located in the lower part. do.

In addition, the sewage that has passed through the filter part of the filter can be reused in an appropriate place by installing a separate storage tank. However, where it is difficult to install the storage tank, it is configured to communicate with the emergency drain line of the filter located in the lower portion to discharge into the water system.

The contaminant filter of sewage according to an embodiment of the present invention has a simple structure, easy installation, and low cost. In addition, since the operation of the washing unit is made by the incoming sewage, it does not require a separate external power source has the advantage of low maintenance costs. In addition, since the cleaning unit can maintain the filtering performance even when the inflow of sewage, such as rainfall is large, it is effective for continuous filtration of contaminants. In addition, since the impingement plate is installed according to the height corresponding to the inlet, it is possible to obtain a large rotational force of the washing unit has the advantage that the removal efficiency of the contaminants attached to the filter unit is greatly improved. In addition, since the trap part is detachably provided, it is not necessary to disassemble the whole when removing the desorbed contaminants, thereby having the advantage of easy maintenance. In addition, it has the advantage of minimizing the involvement of managers by allowing the continuous outflow of sewage, even if the excess capacity is exceeded and the designed treatment capacity is exceeded.

On the other hand, the contaminant filtration device of sewage in which the filter is installed in series has an effect of improving the quality of the final treated water by sequentially filtering by the particle size of the contaminant.

1 is a perspective view showing a contaminant filter of sewage according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a partial cross section of the embodiment shown in FIG. 1; FIG.
3 is a perspective view showing a washing unit employed in the embodiment of FIG.
4 is a front sectional view of the embodiment shown in FIG.
5 is a plan sectional view of the embodiment shown in FIG.
Figure 6 is a perspective view of the washing unit employed in the pollutant filter of sewage according to another embodiment of the present invention.
Figure 7 is a schematic perspective view of the contaminant filtration device of sewage according to an embodiment of the present invention.
8 is a schematic perspective view of the contaminant filtration device of sewage according to another embodiment of the present invention.
Figure 9 is a schematic perspective view of the contaminant filtering device of sewage according to another embodiment of the present invention.
10 is a schematic perspective view of the contaminant filtering device of sewage according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described the configuration, function and operation of the pollutant filter of sewage and the filtration device using the same according to an embodiment of the present invention. However, reference numerals for components that perform similar or identical operations or functions are used uniformly. In addition, sewage to be treated is named sewage, treated water, etc. according to the treatment step.

1 to 5 are diagrams for the pollutant filter of sewage according to an embodiment of the present invention.

1 to 3, the pollutant filter 10 of the sewage according to an embodiment of the present invention is provided in the housing 1, the housing (1), to filter the contaminants contained in the introduced sewage It is rotated by the filter unit 2 and the sewage flowing into the filter unit 2, and includes a washing unit (3) for desorbing the contaminants attached to the inner surface of the filter unit (2).

In FIG. 1, the cross section of the housing 1 has a circular or polygonal cross section, and the housing 1 has an inflow line Li into which sewage to be treated is introduced, and a drain line through which treated water after filtration of contaminants is discharged ( Lo) is provided. In addition, an emergency drain line (Le) may be further provided to discharge the sewage in excess of the treatable capacity.

In addition, when the contaminant filter 10 of sewage according to the present invention is largely manufactured, the lid 11 for opening and closing may be further provided on the upper portion of the housing 1. By opening the lid and injecting a suction hose connected to a suction device (not shown) inside the housing 1, the contaminants, sludge, etc. accumulated in the housing can be sucked out.

2 and 4 to 5, the filter part 2 is a filtering member provided inside the housing 1. As the sewage introduced into the internal space of the filter unit 2 passes through the filter unit 2, the contaminants contained in the sewage are filtered out. Here, the contaminants are included in the sewage and have a particle size, and may be sand, suspended solids, and the like.

In one example, the filter unit 2 may be made of a metal mesh forming a void, the minimum size of the contaminant that can be filtered according to the size of the void is determined. The horizontal cross section of the filter portion 2 is formed in a circular shape, as shown, may be a cylindrical having the same cross section. Alternatively, the filter unit may be changed into various shapes under the condition that the horizontal cross section is circular, such as conical or hemispherical.

In addition, the inlet line (Li) is connected to the filter unit 2, the inlet port 21 is formed in the filter unit (2). At this time, the height of the inlet 21 may vary according to the user's design.

2 to 5, the washing unit 3 is rotatably mounted in the filter unit 2, rotated by sewage flowing into the filter unit 2, and the filter unit 2. The contaminants attached to the inner side of the desorbed on the inner side is to prevent the filter portion 2 is blocked.

Specifically, the washing unit 3 has a height corresponding to the height of the frame frame 31 is rotated spaced apart from the inner surface of the filter unit 2, the inlet 21 formed on the inner surface of the filter unit (2) Is connected to the frame frame 31, the impingement is introduced to the impact plate 32 and the outside of the frame frame 31 to generate a rotational force on the frame frame 31, the filter unit ( 2) the sole 33 in contact with the inner surface.

The frame frame 31 is a structure woven into a frame having a shape corresponding to the outer shape of the filter unit 2. The frame frame 31 may have a circular cross section like the filter unit 2, and the outer side of the frame frame 31 maintains a distance from the inner surface of the filter unit 2. In addition, the center of the frame frame 31 is coupled to the rotary shaft 34 is installed in the vertical direction. At this time, the upper end and the lower end of the rotating shaft 34 are rotatably supported by the shaft support member 321 provided at the upper and lower portions of the filter unit. As a result, the frame frame is rotatable with the rotating shaft at a predetermined distance from the inner surface of the filter portion.

The impingement plate 32 is connected to the frame frame 31 and is a member for rotating the frame frame in one direction when the incoming sewage collides. The impingement plate 32 may be selectively coupled to the frame frame 31 or the rotating shaft 34, or both.

Specifically, the plurality of impingement plates 32 may be installed to be radially perpendicular to the rotation axis. At this time, the inlet 21 of filthy water, as shown in Figure 5, is formed in contact with the circumference of the circular cross-section formed when the frame frame 31 rotates. That is, filthy water is eccentrically introduced into the cross section of the frame frame, so that the introduced filth can effectively push the collision plate to obtain a large rotational force.

As another example, although not shown, the inlet is formed toward the center of rotation of the frame frame, the impingement plate may be provided radially with a constant inclination in the axis of rotation. In this case, while the sewage flowing toward the center comes into contact with the inclined collision plate, rotational force is generated on the rotating shaft. In addition, the impingement plate may have various shapes that generate rotational force on the rotating shaft by colliding with sewage introduced into the filter unit.

In addition, the impingement plate 32 is connected to the frame frame 31 or the rotating shaft at a height corresponding to the height of the inlet port 21 formed on the inner surface of the filter unit 2. In FIG. 4, the inlet 21 is formed on the upper part of the filter part 2. In response, the collision plate 32 occupies a limited area on the upper part of the cleaning unit 3. Therefore, the collision plate is not provided from the middle to the lower end of the washing unit (3). On the other hand, if the impingement plate is formed long from the upper end to the lower end of the frame frame, there is a problem that the rotational resistance is greatly increased due to cold sewage inside the filter part. However, the impingement plate 32 according to the present invention is formed only at a position corresponding to the inlet 21, while receiving the kinetic energy of the sewage flowing through the inlet, due to the sewage that is already filled in the filter part during the rotation of the washing unit. The rolling resistance can be greatly lowered. Therefore, the washing part according to the present invention has an advantage that the rotational efficiency is improved, so that the washing effect is smoothly rotated even by the sewage having a low flow rate.

On the other hand, although the inlet port on the upper side and corresponding to the impact plate is provided on the upper portion of the washing unit, the inlet is formed in the middle or lower portion of the filter unit according to the user's design, accordingly the impact plate is also in the middle or lower portion of the washing unit It may be provided.

On the other hand, the sole 33 is provided on the outside of the frame frame 31, the member to sweep the inner surface of the filter unit 2 in accordance with the rotation of the washing unit 3 to remove the contaminants. Sole 33 has a length in contact with the inner surface of the filter portion, it may be made of a synthetic resin having elasticity. Alternatively, the sole may be replaced with a blade or the like capable of removing contaminants attached to the inner side of the filter part. As a result, the contaminants attached to the inner side of the filter unit may be physically separated from the inner side to prevent deterioration of the filtering performance of the filter unit.

Referring back to FIG. 4, the outlet 12 through which the sewage that has passed through the filter unit 2 flows out to the outside may be located lower than the inlet 21. In this case, the sewage flowing into the filter part 2 is moved to the lower part of the filter part 2 after colliding with the impingement plate 32, and passes through the filter part 2 to the housing 1 and the filter part 2. It flows naturally between). Thereafter, the contaminant filtered water is discharged to the outside of the housing 1 through the outlet 12 formed at a position lower than the inlet 21. In particular, the outlet 12 may be installed at the height of the bottom surface of the housing 1, in which case the treated water does not remain inside the housing 1 after the inflow of sewage is finished. That is, since the inside of the housing is emptied after the rainfall is finished, the decay of the sewage remaining in the housing and the resulting odor is reduced. In addition, as the inflow and outflow of sewage is made smoothly, there is an advantage that the rapid contaminant removal treatment is performed.

Although not shown, the outlet through which the sewage passing through the filter unit is discharged to the outside may be located higher than the inlet. Specifically, the inlet is formed at the middle height of the filter part, and thus the impingement plate may be provided at the middle height of the washing part corresponding to the inlet. And the drain line forming the outlet is higher than the inlet, that is, formed in the upper portion of the housing. In this case, the sewage flowing into the inlet is discharged to the drain line after raising to the height of the outlet. Since the introduced sewage passes through the inner side of the filter part relatively evenly, the filtering area is increased, and accordingly, the separation performance of the contaminants is uniformly exhibited. In addition, as the filtering area is spread, the flow rate of sewage passing through the lower part of the filter part is lowered, thereby reducing the probability of contaminants separated by the washing part from the upper inner side of the filter part sticking to the lower inner side of the filter part again. It also has an effect.

In FIG. 4, the drain line Lo is separated from the emergency drain line Le, and the drain line may be connected to a storage tank separately provided. The treated water collected in the reservoir can be recycled to other water. Meanwhile, the drain line Lo may be configured such that the emergency drain line Le is connected to one line and immediately discharged to the water system.

Meanwhile, referring to FIGS. 2 and 4 to 5, the pollutant filter 10 of sewage is detachably connected to an open lower portion of the filter part 2 and the contaminants filtered by the filter part 2. The containment may further include a trap 4.

The lower part of the filter part 2, ie, the center part of the housing 1 which forms the internal space of the filter part 2, is open and forms the hole 13. As shown in FIG. The open hole 13 communicates with the interior of the trap part 4 which is coupled to the lower part of the housing 1. The trap part 4 has the function of a storage tank, and the pollutant falling from the filter part is collected inside (refer to the block arrow of FIG. 4).

Such a trap portion 4 may be configured to be detachable from the lower portion of the housing (1). Although not shown, the trap part may be detachably coupled to the lower part of the housing by a clamp, a bolt, or the like, or may be detachably coupled to the housing through a screw thread formed at the periphery of the hole.

Alternatively, the trap part is integrally formed with the housing, by opening the maintenance lid 11 on the upper part of the housing 1 and injecting a suction hose connected to a suction device (not shown) inside the housing 1. In addition, contaminants, sludge, etc. accumulated inside the housing can be sucked out.

In addition, the contaminant filter 10 of the sewage according to an embodiment of the present invention (5) is an extra space (5) for flowing out of the sewage overflowing the filter unit 2 on top of the filter unit 2 directly without passing through the filter unit It is formed, and may further include an emergency drain 51 that the extra space 5 and the emergency drain line (Le) is in communication.

In FIG. 2 or FIG. 4, the extra space 5 may be formed by a horizontal plate 14 installed horizontally above the inside of the housing 1. The upper end of the filter unit is coupled to the lower surface of the horizontal plate 14. When the inflow of wastewater by the heavy rain exceeds the hourly throughput of the filter portion, the introduced wastewater overflows in the filter portion 2. The overflowed sewage is filled in the extra space (5), and then exits to the emergency drain (51).

6 is a view of the washing unit employed in the pollutant filter of sewage according to another embodiment of the present invention. Sewage contaminant filter according to another embodiment of the present invention includes a housing, a filter portion and a washing portion. Furthermore, the above-described trap unit or extra space may be further provided. Except for the washing unit described below, the configuration and operation of the above-described embodiment is the same, and thus duplicated description is omitted.

The washing unit 3 applied to another embodiment of the present invention is rotated by sewage flowing into the filter unit and drops contaminants stuck to the inner side of the filter unit from the inner side. Specifically, the washing part 3 is connected to the rotary shaft 34, the rotary shaft 34 which is erected in the center of the circular cross section of the filter portion, spiral spiral frame 31A spaced apart from the inner surface of the filter portion, The collision plate 32 is connected to the rotating shaft 34 at a height corresponding to the height of the inlet port 21 of the sewage formed on the inner surface of the filter part, and the introduced sewage collides to generate a rotational force in the spiral frame 31A. And it is installed on the spiral frame 31A, and includes a sole 33 in contact with the inner surface of the filter unit (2).

The rotating shaft 34 and the impingement plate 32 are the same as in the above-described embodiment.

On the other hand, the spiral frame 31A surrounds the inner curved surface of the filter portion at least once, and is formed to be inclined downward according to the rotational direction of the rotation shaft 34. In addition, the outer side of the spiral frame 31A is spaced apart from the inner side of the filter portion at regular intervals. In addition, a rib connecting the rotating shaft and the spiral frame may be further provided to increase the coupling force between the spiral frame and the rotating shaft.

Such a washing part may have the same function as the washing part employed in the above-described embodiment, and may further have a function of desorbing contaminants stuck to the inner side of the filter part downward. Therefore, the contaminants dropped from the washing unit can be settled quickly, so that the contaminants separated from the upper part of the inner side of the filter part can go down to the trap part or the like before sticking to the lower part of the inner side of the filter part.

On the other hand, Figures 7 to 8 are views showing the pollutant filtering device of the sewage according to embodiments of the present invention. The contaminant filtering device 100 for filthy water shown in FIG. 7 is provided with contaminant filter 10 of filthy water according to the above-described embodiments in parallel at substantially the same height. In addition, the inlet line (Li) is branched at the same height and dispersed in each filter. Therefore, even when the inflow of sewage is sharply increased due to heavy rain, normal pollutants can be removed from each filter.

On the other hand, the contaminant filtering device 100 of the sewage shown in Figure 8 is provided in series with different height of the contaminant filter 10 of the sewage according to the above-described embodiments. In addition, the sewage flowing out of the contaminant filter 10 of the sewage disposed in the upper portion is introduced into the filter portion 2A of the contaminant filter 10A of the other sewage disposed in the lower portion. Therefore, the pollutant of the sewage is primarily filtered in the upper filter 10, and the contaminant may be secondarily filtered in the lower filter 10A. As the filters 10 and 10A are provided in plural, the filters 10 and 10A have a merit of filtering out contaminants several times.

In addition, the air gap of the filter part 2 provided in the contaminant filter 10 of filthy water located at the upper part is larger than the air gap of the filter part 2A provided in the contaminant filter 10A of filthy water located in the lower part. Can be. Therefore, it is possible to filter the contaminants having a smaller particle size gradually from the upper filter 10 to the lower filter 10A, thereby lowering the pollutant content of the treated water discharged. In addition, by sequentially filtering by the particle size of the contaminant has the advantage of reducing the blockage phenomenon of the filter unit can be smooth pollutant treatment of sewage.

The final treated water can be stored in a separate storage tank and reused where appropriate. However, although not shown, when the storage tank is difficult to install, the secondary filtered treatment water drain line Lo is discharged to the water system in communication with the emergency drain line Le.

10, 10A: strainer
Reference Signs List 1 housing 11 lid 12 outlet 13 hole 14 horizontal plate
2, 2A: filter part 21: inlet port
3: cleaning unit 31: frame frame 32: impingement plate 33: brush
34: rotating shaft 321: shaft support member 31A: spiral frame
4 trap part
5: extra space 51: emergency drain
100: filtration device
Li: Acquisition Line Lo: Drain Line Le: Emergency Drain Line

Claims (7)

housing;
A filter unit provided inside the housing and filtering contaminants contained in the introduced sewage; And
And a washing unit rotated by sewage introduced into the filter unit and detaching the contaminants attached to the inner surface of the filter unit.
The washing unit,
Frame frame rotated to be spaced apart from the inner surface of the filter portion;
A collision plate connected to the frame frame at a height corresponding to the height of the inlet of the filthy water formed on the inner surface of the filter part, and the impingement collides with the frame to generate rotational force to the frame frame; And
And a brush attached to an outer surface of the frame frame and in contact with an inner surface of the filter unit. housing;
A filter unit provided inside the housing and filtering contaminants contained in the introduced sewage; And
And a washing unit rotated by sewage introduced into the filter unit and detaching the contaminants attached to the inner surface of the filter unit.
The washing unit,
A rotating shaft erected at the center of the circular cross section of the filter portion;
A spiral spiral frame connected to the rotating shaft and spaced apart from an inner surface of the filter part;
A collision plate connected to the rotating shaft at a height corresponding to the height of the inlet of the wastewater formed on the inner surface of the filter part, and hitting the introduced wastewater to generate a rotational force in the spiral frame; And
Installed in the spiral frame, the brush in contact with the inner surface of the filter portion; pollutant filter of sewage. The method of claim 1 or 2,
The contaminant filter of the sewage is discharged to the outside discharged through the filter unit is located lower than the inlet. The method of claim 1 or 2,
It is detachably connected to the open lower part of the filter part,
Sewage contaminant filter further comprises a trap portion containing the contaminant filtered from the filter unit. The method of claim 1 or 2,
In the upper portion of the filter unit is formed an extra space for collecting sewage overflowing the filter unit,
Sewage contaminant filter further comprises an emergency drain in communication with the extra space. It is provided with a plurality of contaminant filter of the plurality of sewage according to claim 1 or 2 in series with different heights,
The wastewater passing through the filter part of the contaminant filter of the sewage located in the upper portion is introduced into the filter part of the contaminant filter of the other sewage placed in the lower portion,
The air gap of the filter unit provided in the pollutant filter of the sewage located in the upper portion
Sewage contaminant filtering device, characterized in that larger than the air gap of the filter unit provided in the contaminant filter of filthy water located in the lower portion. In claim 6,
Sewage contaminant filtration device further comprises a storage tank for storing the treated water discharged from the contaminant filter of filthy water.

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