KR100906453B1 - Storm runoff treatment apparatus with auto back washing for filter - Google Patents

Abstract

A complex type rainwater effluent treatment apparatus enabling automatic washing of a filter medium is provided to classify foreign materials included in rainwater effluent, and to manage a filter cartridge easily. A complex type rainwater effluent treatment apparatus(A) enabling automatic washing of a filter medium includes a cylindrical main body(10), a cylindrical vortex vessel(20), a filter cartridge(30), and a plurality of watering pipes(40). The cylindrical main body includes a cover(11), a plurality of cleansing water inlets(12), a plurality of washing water outlets(13), a plurality of discharge pipes(14), a plurality of siphons(13a), a cleaning water storing tub(15), a stopper(16), an inclined plate(18), and a settling tank(19). The cylindrical vortex vessel is located at an inner side of a main body, and includes a screen(21), an inlet pipe(22), and a plurality of through-holes(23).

Description

Combined rainfall runoff treatment system with automatic cleaning of filter media {storm runoff treatment apparatus with auto back washing for filter}

The present invention relates to a rainwater runoff treatment apparatus, and more specifically, the rainwater runoff flows in the process of forming and upwardly turning the flow of foreign matter by the screen and by the foreign matter classification and sedimentation by sediment by the foreign matter by precipitation In addition to efficiently classifying foreign matters contained in the effluent, the filter media can be automatically cleaned after the process of classifying foreign matters by the media, thereby preventing the blockage of the media gaps. The present invention relates to a composite rainfall runoff treatment apparatus capable of automatically cleaning media.

Pollutants that cause water pollution are divided into point sources discharged from specific areas and places such as wastewater discharge facilities and sewage generation facilities, and nonpoint sources discharged from unspecified areas and places such as roads, farmland, and construction sites.

In such water pollutants, the point source is limited in the place of origin, so it can be prevented from being contaminated by collecting and treating it from the source, but the nonpoint source is not limited because it is difficult to collect. There was a problem that caused water pollution.

For this reason, it is mandatory to install non-point source reduction facilities to prevent water pollution by non-point source mixed with rainfall runoff in cities or industrial complexes over a certain size.

At this time, non-point source reduction facilities to prevent water pollution by non-point sources include natural facilities consisting of storage facilities, infiltration facilities, artificial wetlands, filtration type treatment devices, vortex type processing devices, screen type processing devices, aggregation and It is divided into a sedimentation type treatment device and a biological treatment device. The natural type facility requires a large facility area, which makes it difficult to apply to urban areas. In actual application, the device type facility is mainly used.

On the other hand, in the device-type facility for reducing non-point source, the screen-type treatment device was only a pretreatment facility, and the coagulation and sedimentation type / biological treatment device was complicated by the facility itself. Vortex type processing apparatus is selectively installed and used according to the characteristics of the installation area and place.

In this case, the filter type treatment apparatus filters out fine contaminants as a filter medium in which a large amount of pores are distributed, and thus has an advantage of relatively high efficiency of removing contaminants. There was a problem that the maintenance is cumbersome, and the eddy current treatment device has the advantage of being able to classify the floating material without power, there is a problem that the treatment efficiency is lowered because it is impossible to remove the contaminants of the fine particles.

In order to solve the problems of the filtration type treatment device and the vortex type processing device as described above, the industry proposes a complex type processing device that uses a combination of the filtration method and the vortex method.

However, the conventional hybrid treatment apparatus proposed is that the filtration treatment unit and the vortex treatment unit is configured vertically, because the size is large, the depth of embedding is deep, it is difficult to install the connection with the pre-installed sewage pipe or rain pipe There was a problem that the pore occlusion of the filter media is often poor because the washing function of the filter media is poor, there is a problem that the degree of vortex formation is weak due to the classification of the floating foreign matter.

The present applicant has proposed a patent registration No. 10-869775 ("composite rainfall runoff treatment apparatus") to solve the above problem, the present invention is a patent registration No. 10-869775 ("combination rainfall runoff treatment apparatus") ) Is further improved.

The present invention has been devised in view of the above situation, rainfall runoff is formed by the classification of foreign matter by the screen and foreign matter classification and precipitation by foreign matter by the screen in the process of forming and upward flow of the rainfall runoff The filter media not only makes it possible to efficiently classify the foreign matter contained in the filter media, but also the automatic cleaning of the filter media after the classification process of the foreign substances by the filter media to prevent the blockage of the filter media voids so that the filter cartridge can be easily managed. The purpose of the present invention is to provide a composite rainfall runoff treatment apparatus capable of automatic cleaning.

The composite type rainfall runoff treatment apparatus capable of automatic washing of the media according to the present invention for achieving the above object,

Cylindrical, the cover is freely separated and coupled to the top, the washing water inlet and the washing water outlet is provided with a differential in height on all sides of the upper, washing water inlet and the washing water outlet is provided around the outer circumference of the upper And, between one side of the wash water inlet and the wash water outlet through the wash water storage tank is provided with an outlet pipe leading to the rainwater pipe or stream, a siphon leading to the wash water outlet in front of each wash water outlet is provided, the lower part of the wash water storage tank by lifting Blocking stopper is provided to open or close each siphon, the diameter is gradually reduced toward the bottom inside the middle portion, the through-hole is formed in the center and a cone-shaped cone is formed on the top of the through hole and radially projected on the upper surface. The inclined plate is formed with a groove, the lower side toward the center As this document is gradually smaller in diameter provided with a bottom inclined plate through holes it is formed in the central portion, and the swash plate and the main body is provided between the settling tank bottom inclined plate;

It is located inside of the main body, the cylindrical inlet is provided with a water-permeable screen having a larger diameter than the lower portion around the upper end, the inlet pipe through which the tip is rounded while passing from the outside through the main body on one side of the middle Is provided, and the vortex tank provided with a continuous through the inner surface of the lower end;

Located in the middle portion between the main body and the vortex tank, the filter cartridge of the upper and lower stages filled with the media of different particle sizes, each end in the form of a quadrangular ring;

It is located in the upper four sides of the filter cartridge, it is made of an arc, provided with an injection port leading to the washing water outlet of the body adjacent to each middle, the water spray pipe provided with a water spray port for spraying water to the filter cartridge on the bottom; It is characterized by consisting of.

The composite rainfall runoff treatment apparatus capable of automatically cleaning the media according to the present invention is provided with a screen on the top of the vortex tank, so that the rainfall runoff forms a swirl flow and floats due to screen blocking in the process of raising the water level. The classification can be made, and the protrusion groove is provided in the inclined plate of the main body so that the sorting of the fine particle solids can be made by sedimentation through the protrusion groove of the inclined plate in the process of turning up the contact with the cone. The filter cartridge is provided between the main body and the vortex bath so that the fine particle foreign matter can be classified by filtration of the filter medium filled in the filter cartridge during the swirl flow upward. Can be done efficiently.

In addition, the composite rainfall runoff water treatment apparatus capable of automatic washing of the media according to the present invention is provided with a watering pipe to spray the water supplied from the washing water storage tank to the filter cartridge on the upper side of the filter cartridge, so that the sprinkling after classification of foreign matter by the media The automatic cleaning of the filter medium through the water spray from the pipe to prevent the blockage of the filter medium voids, it is possible to easily manage the filter cartridge.

Hereinafter, with reference to the accompanying drawings in more detail as follows.

1 is a perspective view showing the overall appearance of the composite type rainfall runoff treatment apparatus capable of automatic washing of media according to the present invention, Figure 2 illustrates the structure of the composite type rainfall runoff treatment apparatus capable of automatic washing of the media according to the present invention 3 is a cross-sectional view for explaining the structure of the inlet pipe of the vortex tank in the composite type rainfall runoff treatment apparatus capable of automatic cleaning of the media according to the present invention, Figure 4 is capable of automatic cleaning of the media according to the present invention Operation state diagram for explaining the classification of foreign matter by the screen in the composite rainfall runoff water treatment device, Figure 5 is an operation for explaining the classification of foreign matter by sedimentation in the composite rainfall runoff treatment device capable of automatic cleaning of the media according to the present invention 6 is a composite type rainfall runoff treatment plant capable of automatically washing the media according to the present invention. In Figure 7 is an operating state diagram for explaining the classification of foreign matter by the media, Figure 7 is an operating state diagram for explaining the automatic cleaning of the media in the composite type rainfall runoff water treatment apparatus capable of automatic cleaning of the media according to the present invention, Figure 8 Operational view for explaining the opening of the washing water outlet by the blocking plug in the composite type rainfall runoff water treatment apparatus capable of automatic washing of the media according to the invention, Figure 9 is a composite type rainfall runoff treatment capable of automatic washing of the media according to the present invention 10 is a plan sectional view for explaining the installation structure of the sprinkler pipe in the device, Figure 10 is a plan view for explaining the shape of the filter cartridge in the composite type rainfall runoff treatment apparatus capable of automatic cleaning of the media according to the present invention.

1 and 2, the composite type rainfall runoff treatment apparatus A capable of automatically washing the media according to the present invention includes a main body 10, a vortex tank 20, a filter cartridge 30, It consists of a watering pipe (40).

The main body 10 has a cylindrical shape, and a cover 11 freely separated and coupled to the top is provided, and the washing water inlet 12 and the washing water outlet 13 are provided on the four sides of the upper side at different heights, and the washing water. The washing water storage tank 15 is provided around the upper portion formed with the inlet 12 and the washing water outlet 13, and passes through the washing water storage tank 15 between the one side of the washing water inlet 12 and the washing water outlet 13 to the rain pipe or the river. The outflow pipe 14 is provided, and the siphon 13a leading to the washing water outlet 13 is provided in front of each washing water outlet 13, and is lowered by the buoy 16a in the lower part of the washing water storage tank 15. Blocking stopper 16 is provided to open or close the siphon (13a), the diameter is gradually reduced toward the bottom inside the middle portion, the through hole (17a) is formed in the central portion and in the form of a cone on the top of the through hole (17a)Cone 17b is formed and the inclined plate 17 is provided with a radially projecting groove 17c on the upper surface, the bottom inclined plate 18 formed with a through hole 18a in the center while gradually decreasing in diameter toward the center at the bottom ) Is provided, and the settling tank 19 is provided between the inclined plate 17 and the bottom inclined plate 18.

The washing water inlet 12 and the washing water outlet 13 in the main body 10 is a difference in height, in particular, the washing water inlet 12 is preferably located above the washing water outlet (13).

Since the washing water inlet 12 in the main body 10 is positioned above the washing water outlet 13, the water flowing through the washing water inlet 12 is stored in the washing water storage tank 15 while the outflow to the washing water outlet 13 is blocked. It becomes possible.

In addition, the cone 17b formed on the inclined plate 17 in the main body 10 may preferably be positioned at an upper end thereof with a lower end spaced from an upper surface of the inclined plate 17.

Since the lower end of the cone 17b formed on the inclined plate 17 is positioned at an upper portion with an interval from the upper surface of the inclined plate 17, water flows through the gap between the bottom of the cone 17b and the upper surface of the inclined plate 17 so that the through hole 17a is provided. Can be discharged through).

The vortex tank 20 is located on the inner side of the main body 10, the cylindrical one is provided with a water-permeable screen 21 having a larger diameter than the lower portion around the upper end, the main body 10 on one side of the middle The inlet pipe 22 is formed to penetrate through one side and form a rounded tip, and a through hole 23 is provided on the inner surface of the lower end.

In this vortex tank 20, the through hole 23 is continuous to the inner surface of the lower end of the vortex tank 20, in particular, the lower end of the filter cartridge 30 located between the vortex tank 20 and the main body 10 It is preferable to continue up, down, left and right at the height from an upper end to a lower end.

The through-hole 23 of the vortex tank 20 is continuous up, down, left, and right at the height from the upper end to the lower end of the filter cartridge 30 to the outside of the vortex tank 20 through the through-hole 23 of the vortex tank 20. Since the discharged water is sequentially passed through the lower end and the upper end of the filter cartridge 30, foreign matter classification by filtration of the filter medium 31 in the filter cartridge 30 may be performed.

The filter cartridge 30 is located in the middle portion between the main body 10 and the vortex tank 20, and the upper and lower two stages filled with media 31 having different particle sizes, but each end of the quadrant It is in the form of a ring.

In the filter cartridge 30, the upper end and the lower end are filled with the media 31 having different particle sizes, but the media size of the media 31 of the upper stage is lower than the media size of the media 31 of the lower stage. Small ones are preferred.

In the filter cartridge 30, the particle size of the upper end filter media 31 is smaller than that of the lower filter medium 31 filter, so that the rainfall runoff in the main body 10 is lower in the filter cartridge 30 in the upward process. After the primary filtration in the filter medium (31), the secondary filter can be made in the upper filter medium (31) of the filter cartridge (30).

Meanwhile, as shown in FIG. 10, the filter cartridge 30 is formed in the form of a ring of quadrant to increase convenience at the time of installation and collection of the filter cartridge 30, and thus does not have a functional feature. It may be in the form of a ring of a separator.

The sprinkling pipe 40 is located in the upper four sides of the filter cartridge 30, and the inlet 41 leading to the washing water outlet 13 of the main body 10 adjacent to each other is provided in an arc shape is provided. On the bottom, a water injection port 42 for spraying water onto the filter cartridge 30 is provided.

Such a water spray pipe 40 is located on the upper portion of the filter cartridge 30, it is preferable to be installed continuously along the middle between the outer diameter and the inner diameter of the filter cartridge 30 as shown in FIG.

Since the water spray pipe 40 is continuously installed along the middle between the outer diameter and the inner diameter of the filter cartridge 30, the water sprayed through the water injection port 42 on the bottom surface of the water spray pipe 40 is entirely part of the filter cartridge 30. Evenly across.

The composite type rainfall runoff treatment apparatus (A) capable of automatically washing the media according to the present invention as described above is capable of classifying foreign substances by screening and foreign substances classification and precipitation by media.

First, the foreign matter classification by the screen in the present invention will be described in detail as follows.

Rainfall runoff containing foreign matter (non-point source) is introduced into the vortex tank 20 through the inlet pipe 22 provided in the vortex tank 20, the tip of the inlet pipe 22 of the vortex tank 20 is shown in FIG. As shown in the vortex tank 20 is to form a round along the outer diameter so that the rainfall runoff flowing through the inlet pipe 22 forms a curve and rotates along the surface inside the vortex tank 20 while flowing at a high speed As a result of the formation of a strong swirl flow compared to forming a swirl flow inside the main body 10 having a large diameter, floating and particulate matter (50) of the floating foreign matter (50) included in the rainfall effluent during the swirl flow formation process. ) Will be precipitated.

In the above process, the foreign matter 50 injured by the swirl flow reaches the upper part of the vortex bath 20 as the rainfall outflow water level in the vortex bath 20 rises, and the upper part of the vortex bath 20 has a water passable screen ( 21 is provided so that the runoff of the water level rises as shown in Figure 4 is discharged to the outside of the vortex tank through the screen 21, the outflow of the foreign matter 50 is blocked, so that the floating foreign matter through the screen 21 You can sort.

In this case, the screen 21 has a larger diameter than that of the lower part, so that the stepped portion is formed at the connection portion with the lower part, and the foreign matter caught on the screen 21 is stacked on the stepped foreign matter classified through the screen 21. Can be easily collected.

Next, the foreign matter classification by precipitation in the present invention will be described in detail as follows.

Rainfall outflow water flowing into the vortex tank 20 through the inlet pipe 22 gradually decreases the rotational force after forming the swirl flow and is directed to the lower vortex tank 20, and the cone 17b is located below the vortex tank 20. Since the formed inclined plate 17 is located, the rainwater discharged toward the lower vortex tank 20 is upwardly contacted between the vortex tank 20 and the main body 10 while contacting the cone 17b and the inclined plate 17.

In the above process, the rainfall runoff upwards between the vortex bath 20 and the main body 10 is significantly reduced in speed, so that the precipitation of the foreign matter 50 made of the fine particle solids included in the rainfall runoff is made. The upper surface of the (17) is formed with a protrusion groove (17c), the foreign matter 50 of the fine particle solids precipitated in the upward process, as shown in Figure 5 the protrusion groove (17c) of the inclined plate 17 Since the sedimentation tank 19 is introduced through the classification of the foreign matter 50 by the sedimentation is made.

At this time, the foreign matter 50 precipitated in the settling tank 19 is discharged to the sewage pipe through the through hole (18a) of the bottom slope plate 18 can be made post-treatment.

Next, the foreign matter classification by the media in the present invention will be described in detail as follows.

After the inflow pipe 22 is introduced into the vortex bath 20 to form a swirl flow, the rainfall runoff flowing downward is contacted with the cone 17b and the inclined plate 17 at the bottom of the vortex bath 20 to be bltexed. It is directed between the tank 20 and the main body 10, between the vortex tank 20 and the main body 10 is provided with a filter cartridge 30 of the upper and lower stages, as shown in Figure 6 rainfall runoff water upwards As a result of filtration of the foreign matter 50 made of fine particles in the process of passing through the filter medium 31 in the filter cartridge 30, the classification of the foreign matter 50 by the filter medium 31 is performed.

And after the inflow pipe 22 is introduced into the vortex tank 20 to form a swirl flow, the rainfall runoff is passed through the lower part of the vortex tank 20, the inner surface of the lower portion of the vortex tank 20 is continuous The through hole 23 is formed, and the filter cartridge 30 is provided on the outside of the lower end of the vortex tank 20 in which the through hole 23 is formed, as shown in FIG. 6 through the through hole 23. (20) Part of the rainfall runoff flowing outside passes through the filter media 31 in the filter cartridge 30, so that the classification of the foreign material 50 by the filter media 31 is performed.

At this time, the foreign matter 50 classified in the filter medium 31 flows to the lower part during the cleaning process of the filter medium 31 and is discharged to the sewer pipe through the through hole 17a of the inclined plate 17 and the through hole 18a of the bottom slope plate 18. Post-processing can be achieved.

On the other hand, the composite rainwater effluent treatment apparatus (A) capable of automatically washing the media according to the present invention is capable of automatically cleaning the media 31 after the filtration process through the media 31. This will be described in detail as follows.

When the inflow of rainfall outflow water through the inlet pipe 22 of the vortex tank 20 is larger than the outflow of the rainfall outflow water through the outflow pipe 14 of the main body 10, the water level in the main body 10 increases gradually. Done.

In the above process, as shown in FIG. 8B, the stopper 16 rises as the water level rises in the main body 10 due to the buoyancy of the buckle 16a, leading to the washing water outlet 13. Since one end is blocked, the outflow of water to the washing water outlet 13 is blocked, and a part of the treated water passing through the filter cartridge 30 flowing into the washing water inlet 12 of the main body 10 is filtered in the washing water storage tank 15. (31) Stored as washing water for washing.

In this state, when the inflow of the rainfall outflow water through the inlet pipe 22 is stopped and the rainfall outflow water level in the main body 10 is lowered, the filtration process in the filter medium 30 in the filter cartridge 30 ends. When the water level of the rainfall runoff falls in the main body 10, as shown in FIG. 8A, the mouth 16a of the blocking plug 16 descends as the water level falls, and the siphon 13a leads to the washing water outlet 13. Since the blocking plug 16 which was blocking the one end is lowered, the washing water stored in the washing water storage tank 15 is discharged to the outside through the washing water outlet 13 from the moment when one end of the siphon 13a is opened by the blocking plug 16 falling. 7 is introduced into the water spray pipe 40 through the injection port 41 of the water spray pipe 40 and sprayed into the filter cartridge 30 through the water spray port 42 at the bottom, 31) to prevent clogging of the media (31) voids by automatic cleaning It will be possible.

As described above, the composite rainfall runoff water treatment apparatus (A) capable of automatically washing the media according to the present invention is capable of classifying foreign substances by screening and foreign substances classification by precipitation and foreign matter classification by precipitation. It is to be able to more efficiently separate the foreign matter contained in the rainfall effluent, it is possible to automatically wash the filter media, it is possible to prevent the blockage of the filter media pores can be made easier to manage the filter cartridge will be.

Since the present invention as described above is not limited to the above-described embodiments, it can be changed within the scope not departing from the gist of the present invention claimed in the claims, such changes are within the claims described.

1 is a perspective view showing the overall appearance of the composite type rainfall runoff treatment apparatus capable of automatic cleaning of the media according to the present invention

Figure 2 is a cross-sectional view for explaining the structure of the composite type rainfall runoff treatment apparatus capable of automatic washing of the media according to the present invention

Figure 3 is a cross-sectional view illustrating the inlet pipe structure of the vortex tank in the composite type rainfall runoff treatment apparatus capable of automatic washing of the media according to the present invention

Figure 4 is an operational state diagram for explaining the classification of foreign matter by the screen in the composite type rainfall runoff treatment apparatus capable of automatic cleaning of the media according to the present invention

Figure 5 is an operating state diagram for explaining the classification of foreign matter by sedimentation in the composite type rainfall runoff treatment apparatus capable of automatic cleaning of the media according to the present invention

Figure 6 is an operational state diagram for explaining the classification of foreign matter by the media in the composite type rainfall runoff treatment apparatus capable of automatic cleaning of the media according to the present invention

Figure 7 is an operating state for explaining the automatic washing of the filter media in the composite type rainfall runoff treatment apparatus capable of automatic cleaning of the media according to the present invention

8 is an operating state diagram for explaining the opening of the wash water outlet by the stopper in the composite type rainfall runoff treatment apparatus capable of automatic cleaning of the media according to the present invention

Figure 9 is a plan cross-sectional view for explaining the installation structure of the sprinkling pipe in the composite type rainfall runoff treatment apparatus capable of automatic washing of the media according to the present invention

10 is a plan view for explaining the shape of the filter cartridge in the composite type rainfall runoff treatment apparatus capable of automatic cleaning of the media according to the present invention

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

10: body 11: cover

12: washing water inlet 13: washing water outlet

13a: siphon 14: outlet pipe

15: washing water storage tank 16: blocking plug

16a: float 17: inclined plate

17a: through hole 17b: cone

17c: protrusion groove 18: floor slope plate

18a: through hole 19: sedimentation tank

20: Vortex 21: Screen

22: inlet pipe 23: through hole

30: filter cartridge 31: media

40: water pipe 41: inlet

42: water jet 50: foreign matter

A: Rainwater Runoff Treatment System

Claims (6)

 Cylindrical, the cover is freely separated and coupled to the top, the washing water inlet and the washing water outlet is provided with a differential in height on all sides of the upper, washing water inlet and the washing water outlet is provided around the outer circumference of the upper And, between one side of the wash water inlet and the wash water outlet through the wash water storage tank is provided with an outlet pipe leading to the rainwater pipe or stream, a siphon leading to the wash water outlet in front of each wash water outlet is provided, the lower part of the wash water storage tank by lifting Blocking stopper is provided to open or close each siphon, the diameter is gradually reduced toward the bottom inside the middle portion, the through-hole is formed in the center and a cone-shaped cone is formed on the top of the through hole and radially projected on the upper surface. The inclined plate is formed with a groove, the lower side toward the center As this document is gradually smaller in diameter provided with a bottom inclined plate through holes it is formed in the central portion, and the swash plate and the main body is provided between the settling tank bottom inclined plate; It is located inside of the main body, the cylindrical inlet is provided with a water-permeable screen having a larger diameter than the lower portion around the upper end, the inlet pipe through which the tip is rounded while passing from the outside through the main body on one side of the middle Is provided, and the vortex tank provided with a continuous through the inner surface of the lower end; Located in the middle portion between the main body and the vortex tank, the filter cartridge of the upper and lower stages filled with the media of different particle sizes, each end in the form of a quadrangular ring; It is located in the upper four sides of the filter cartridge, it is made of an arc, provided with an injection port leading to the washing water outlet of the body adjacent to each middle, the water spray pipe provided with a water spray port for spraying water to the filter cartridge on the bottom; Combined rainfall runoff water treatment apparatus capable of automatic cleaning of the media, characterized in that consisting of. The method of claim 1, The washing water inlet of the main body is a composite rainfall runoff water treatment apparatus capable of automatic cleaning of the filter medium, characterized in that located on top of the washing water outlet. The method of claim 1, Cone formed on the inclined plate of the main body is a composite rainfall runoff water treatment apparatus capable of automatic cleaning of the filter medium, characterized in that the lower end is located at an upper portion spaced from the upper surface of the inclined plate. The method of claim 1, The through hole of the vortex tank is continuous to the inner surface of the lower end of the vortex tank, the composite type rainwater is capable of automatic cleaning of the media, characterized in that the continuous continuous up and down, left and right at the height from the top to the bottom of the lower end of the filter cartridge located between the vortex tank and the body Effluent treatment unit. The method of claim 1, The upper end and the lower end of the filter cartridge is filled with media having different particle sizes, and the filter media of the upper stage is smaller than the media particle size of the lower stage. Combined rainfall runoff treatment device. The method of claim 1, Wherein the sprinkling pipe is located on the upper portion of the filter cartridge, composite rainwater effluent treatment apparatus capable of automatic cleaning of the media, characterized in that continuously installed along the middle between the outer diameter and the inner diameter of the filter cartridge.

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