KR100846864B1 - Tiered filter bed of the water land - Google Patents

Abstract

A water quality improving device applicable to various aquatic places is provided to improve water quality of the aquatic places in a nature friendly manner. A tiered wetland filter bed(10) comprises: a basic frame(11); and a plurality filter parts(40) which are formed in the form of a stairway within the basic frame to filter water flowing into the basic frame stepwise by a filter medium. The tiered wetland filter bed further comprises a settling part(20) formed within the basic frame to settle alien substances in the water before filtering the water by the filter part. The filter media formed in the filter part is at least one of charcoal, sand, and gravel. The filter part includes: a charcoal filter part(50) in which charcoal is formed to filter the water; and a sand filter part(60) for filtering again the water that has been filtered by the charcoal filter part using sand. The settling part includes: a settling tank(21) for settling alien substances in water flown into the settling part; and a settling part moving path(23) of which a lower part is communicated with the settling tank, of which an upper part is communicated with the filter part to function as a passage through which water flown into the settling tank moves to the filter part. The charcoal filter part includes a charcoal filter tank(51), a lower separation tank(55), and a charcoal filter part moving path(59). The sand filter part includes a sand filter tank(61), a lower discharge tank(65), and discharge nozzles(15).

Description

Tiered Filter Bed of the Water Land}

1 is a schematic cross-sectional view showing an embodiment in which the stepped wetland filter according to the present invention is installed in the aquatic area.

Figure 2 is a schematic cross-sectional view showing another embodiment in which the stepped wetland filter according to the present invention is installed in the aquatic area.

Figure 3 is a perspective view showing the appearance of a preferred embodiment of the stepped wetland filter according to the present invention.

Figure 4 is a cross-sectional view showing a preferred embodiment of the stepped wetland filter according to the present invention.

Figure 5 is a side view showing a preferred embodiment of the stepped wetland filter according to the present invention.

Figure 6 is a perspective view showing a preferred embodiment of the mandrel of the stepped wetland filter according to the present invention.

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

10: Stepped wetland statue 11: Basic frame

13: door 14: measuring sensor

15: discharge nozzle 17: discharge valve

20: sedimentation part 21: sedimentation tank

23: sedimentation passage 25: inlet

27: hook 29: overflow protection

31: sedimentation communication hole 33: communication hole hook

40: filter 50: charcoal filter

51; Charcoal filtration tank 53; Charcoal

55: lower separation tank 57: manure

59: charcoal filter runway 60: sand filter

61: Sand Filtration 63: Sand

65: lower discharge tank 67: overflow prevention movement path

The present invention relates to a stepped wetland filter, and more particularly to a stepped wetland filter for improving the appeal and river water quality.

Large amounts of nutrients entering lakes and streams promote the growth of algae such as green algae. Algae grown excessively by large amounts of nutrients are partly killed by anaerobic bacteria, and anaerobic bacteria break down algae, reducing dissolved oxygen in water, causing water pollution.

In order to improve the water quality of the appeal, the patent application status applied for the past 10 years shows the chemical method of condensing and depositing nutrients by inputting chemicals for water quality improvement, or removing the sedimentary soil or covering the lake with concrete to improve the water quality in the appeal. It is proposed to install directly, to improve the water quality by increasing the activity of microorganisms by directly supplying air to the flow of weak water flow to promote the decomposition.

However, as the national water quality standards are strengthened in the future, and citizen use such as appeals increases, the nature-friendly water quality improvement plan, in which not only the cleanliness efficiency but also the appearance and the environment do not give citizens a sense of intimacy, is approaching. It is becoming.

Therefore, in the case of the chemical method using the drug is a concern for damage to the natural appeal or cultural properties there is a problem that the use range is limited in the case of the water quality improvement method by the chemical reaction.

And there is a problem that there is a possibility that side effects occur by damaging the existing ecosystem in the case of how to cover the revetment concrete or remove the sediment.

The present invention is to solve such a conventional problem, it is an object of the present invention to provide a water quality improvement apparatus that can be applied to various aquatic sites.

Another object of the present invention is to improve the water quality in a natural way.

According to a feature of the present invention for achieving the above object, the present invention and the base frame; It is preferably configured to include a plurality of filtration unit which is provided in the interior of the base frame in a stepped manner and filtered the flowing water flowing into the interior of the base frame step by step by the media.

Preferably, the basic frame of the present invention is further provided with a precipitation portion in which this substance is precipitated in the flowing water before being filtered by the filtering portion.

It is preferable that the media provided in the filtration part of this invention is at least any one or more of charcoal, sand, and gravel.

Charcoal filtration unit for filtering the water by the charcoal provided therein; It is preferably configured to include a sand filtration unit for filtering the running water filtered by the charcoal filter again with sand.

Precipitation section of the present invention and the sedimentation tank in which foreign matter in the flowing water flowing into the precipitation section is precipitated; It is preferable that the settling tank and the lower portion is in communication with the filter unit and the upper portion is in communication with the settling section movement path which is a passage for the flow of water flowing into the settling tank to the filtering unit is preferable.

Charcoal filtration unit of the present invention and the charcoal filtration tank which is filtered by the charcoal provided inside the flowing water flowing in the precipitation portion; A lower separation tank provided at a lower portion of the charcoal filtration tank, into which only flowing water filtered by the charcoal is introduced; The lower separation tank and the lower portion is in communication with the sand filtration unit and the upper portion is preferably configured to include a charcoal filter moving path which is a passage for the flow of water flowing into the lower separation tank to the sand filtration unit.

Sand filtration unit of the present invention and the sand filtration tank is filtered by the sand provided therein flowing from the charcoal filtration unit; A lower discharge tank provided at a lower portion of the sand filtration tank into which only flowing water filtered by the sand is introduced; It is preferable to include a discharge nozzle for discharging the flowing water introduced into the lower discharge tank to the outside.

It is preferable that the effective particle diameter of the sand provided in the sand filtration tank of this invention is 0.45-0.7 mm, and a uniformity coefficient is 1.7 or less.

The upper part of the settling tank of the present invention is preferably further provided with a catching net for filtering foreign matter in the flowing water flowing into the settling tank.

At the point where the sediment moving part of the present invention communicates with the filtration part and the point where the charcoal filtering part moving with the sand filtration part is further provided, a communication hole catching net for filtering foreign substances in the flowing water is further provided.

The bottom surface of the charcoal filtration tank and the bottom surface of the sand filtration tank of the present invention is preferably provided with a filter pad to prevent the filter medium provided in the charcoal filtration tank and the sand filtration tank is separated from the lower separation tank and the lower discharge tank. Do.

The discharge nozzle of the present invention is preferably further provided with a discharge valve for controlling the amount of water discharged to the discharge nozzle.

The settling portion and the charcoal filtration portion of the present invention preferably further includes an overflow prevention device to be introduced to the next step before the flowing water flowing into the settling portion and the charcoal filtration portion to the outside.

Preferably, the settling portion and the charcoal filtration portion of the present invention further include an overflow blocking device for filtering foreign substances in the flowing water introduced through the overflow preventing device.

The basic frame of the present invention is preferably further provided with a measuring sensor for measuring whether the breakthrough viscosity of the filter material provided in the base frame.

The measuring sensor of the present invention is preferably provided in the sand filtration tank and the lower discharge tank.

In the outer appearance of the basic frame of the present invention, it is preferable that the outer skin portion made of a material corresponding to the surrounding environment is further provided.

It is preferable that aquatic plants are planted on the upper surface of the outer skin of the present invention.

The basic frame of the present invention is preferably installed seated on the upper surface of the surrounding land around the aquatic area.

The basic frame of the present invention is preferably installed in a state buried beneath the peripheral surface area around the aquatic area.

The basic frame of the present invention is preferably configured to further include a pump that provides power to inflow the flowing water.

According to the stepped wetland filtration according to the present invention, since the use of the media to filter the running water by a physical method, the applicability to the aquatic area is expanded, and because the running water is filtered using natural products, there is a natural friendly advantage.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the stepped wetland filter according to the present invention will be described in detail.

1 to 5 illustrate a preferred embodiment of the stepped wetland filter according to the present invention.

As shown, the stepped wetland filter 10 to be described below is installed in the peripheral area 3 in contact with the aquatic area 1. The stepped wetland filter 10, as shown in Figure 1 may be installed in a state buried in the lower surface of the periphery (3) by excavating the peripheral (3).

The stepped wetland filter 10 is connected to the water source and the aquatic area (1) by a connecting pipe (5). Therefore, the flowing water of the water supply through the connecting pipe (5) flows into the stepped wetland filter (10) is purified and then discharged to the aquatic land (1).

In addition, the stepped wetland filter 10, as shown in Figure 2 may be installed on the upper surface of the peripheral land (3). In this case, the flow of the aquatic land 1 is introduced into the stepped wetland filter 10 using a pump 7. The filtration rate of the stepped wetland filter 10 may be controlled by adjusting the driving time of the pump 7.

The stepped wetland filter 10 is connected to the aquatic area 1 by the connecting pipe 5, and the running water is discharged to the aquatic area 1 after passing through the stepped wetland filter 10.

As described above, the stepped wetland filter 10 may be installed in a state buried under the surface of the surrounding land 3, or may be installed on an upper surface of the surface of the surrounding land 3.

The stepped wetland filter 10 is provided with a base frame 11, the base frame 11 may be made of a material such as aluminum alloy, such as SUS strong water resistance. Therefore, the base frame 11 is not easily corroded by water.

An outer skin (not shown) may be provided on an outer surface of the stepped wetland filter 10. The outer skin is composed of wood, etc. that do not conflict with the surrounding environment is provided on the outer surface of the stepped wetland filter (10). Therefore, when the stepped wetland filter 10 is installed on the surface of the upper surface of the periphery 3, the outer skin serves to make the exterior of the stepped wetland filter 10 match with the surrounding environment.

In addition, aquatic plants may be planted on the upper surface of the basic frame 11. Aquatic plants are planted on the upper surface of the base frame 11 so that the appearance of the stepped wetland filter 10 can be purified to the surrounding environment.

The side of the base frame 11 is provided with a door 13 (see Fig. 5). The door 13 selectively opens and closes the inside of the precipitation part 20, the charcoal filtration part 50, and the sand filtration part 60 which will be described below. It is possible to remove the foreign matter precipitated in the sedimentation unit 20 through the door 13, it is possible to replace the filter medium provided in the charcoal filtration unit 50 and the sand filtration unit 60.

The filter medium provided in the base frame 11 has a breakthrough point after a predetermined time, and thus the filtration capacity is reduced. In order to maintain the filtering capacity of the filter medium provided in the base frame 11, the filter medium must be replaced at regular intervals. Therefore, a plurality of measuring sensors 14 are provided to measure whether the breakthrough viscosity of the filter material provided in the basic frame 11 has passed.

The measuring sensor 14 is provided inside the sand filtration tank 61 and the lower discharge tank 65 to be described below to determine the amount of contaminants in the flowing water flowing into the sand filtration tank 61 and the lower discharge tank 65. Measurements can be made to determine whether the media has passed the breakthrough point. The measuring sensor 14 is connected to the central processing unit, and the measured value measured by the measuring sensor 14 is transmitted to the central processing unit, so that it is possible to know when to replace the medium.

In addition, a plurality of discharge nozzles 15 for discharging inflow water flowing into the base frame 11 are provided at the front lower side of the base frame 11, and the discharge nozzle 15 is provided with a discharge valve 17. The discharge of the running water is controlled by the discharge valve 17.

The precipitation part 20 is provided at the portion where the flowing water flows from the base frame 11. The precipitation unit 20 serves to precipitate the foreign matter of the flowing water flowing into the precipitation unit 20.

The height H of the settling portion 20 should be determined in consideration of the surface load ratio of the flowing water flowing into the settling portion 20. If the height (H) of the precipitation unit 20 is too low, the horizontal flow rate is increased to cause the precipitate precipitated on the bottom surface of the precipitation unit 20 rises. And the precipitate precipitated on the bottom of the precipitate 20 is removed through the precipitate door 13 to be described below.

The sedimentation unit 20 is composed of a sedimentation tank 21 for sedimenting foreign matters and a sedimentation passage 23 for moving the sedimented water by the sedimentation tank 21 to the filtration part 40 to be described below. do.

The lower portion of the settling tank 21 and the lower portion of the settling portion moving path 23 communicate with each other and the other parts are partitioned from each other so that the flow water passes through the settling tank 21 and moves to the settling portion moving path 23.

The settling tank 21 is formed with an inlet 25 through which flowing water flows. The catching net 27 is provided at the point where the inlet 25 is formed in the settling tank 21. The catching net 27 serves to filter foreign matter in the flowing water flowing into the inlet 25.

An overflow prevention port 29 is provided at the top end of the surface in contact with the filtration unit 40 at the top of the precipitation unit 20. The overflow prevention port 29 is in communication with the inlet port 25 of the settling section 20 but is not in communication with the settling section moving path 23 of the settling section 20.

Therefore, the overflow prevention port 29 is a filtration unit without flowing through the settling section moving path 23 through the overflow prevention port 29 when the amount of flowing water flowing into the precipitation unit 20 is large It serves to move to 40.

The overflow prevention device 29 is provided with an overflow prevention device catching network 29 ′ having a hole having a predetermined diameter. The foreign matter in the running water moving to the filtration unit 40 is removed by the overflow prevention catching network 29 '. The overflow guard 29 and the overflow guard hanger 29 'is also provided at the upper end of the surface in contact with the sand filter 60 in the charcoal filter 50 to be described below.

At the upper end of the settling portion moving path 23, a settling portion communicating port 31 communicating with the filtration portion 40 is formed. The flowing water moving through the settling section movement path 23 moves to the filtration section 40 through the settling section communication port 31.

The sediment communication port 31 is also provided with a communication port catching network 33 having a hole having a predetermined diameter to remove foreign substances in the flowing water moving to the filtration unit 40 by the communication hole catching network 33. . The communication port catching network 33 is also provided in the charcoal filter communication port 59 'to be described below.

The base frame 11 is provided with a plurality of filtration units 40 in contact with the precipitation unit 20. The filtration unit 40 serves to remove foreign substances in the flowing water flowing into the filtration unit 40.

The filtering unit 40 may filter the running water using various types of media that can remove foreign substances in the running water such as charcoal, sand, or gravel. The filtration unit 40, as shown in Figure 4 is provided with a charcoal filtration unit 50 for filtering the running water by charcoal.

The charcoal filtration unit 50 is provided with a charcoal filtration tank 51 containing the flowing water moved through the settling portion moving path 23. The charcoal filtration tank 51 is provided with charcoal 53 to filter the flowing water flowing into the charcoal filtration tank 51.

The charcoal 53 acts to prevent oxidation and reduction, and has a porous structure formed therein, which is excellent in filtration ability. In addition, the charcoal 53 has a deodorizing effect to remove foreign substances in the running water flowing into the charcoal filtration tank 51 and to remove odors.

The effective particle diameter of the charcoal 53 is preferably formed to 1mm or less. When the effective particle diameter of the charcoal 53 is formed to 1mm or less, the flowing water passing through the charcoal 53 passes through the charcoal 53 at a filtration speed of 100 to 150m / d.

The lower separation tank 55 is provided below the charcoal filtering tank 51. The charcoal filtration tank 51 and the lower separation tank 55 are separated from each other so that the charcoal 53 provided in the charcoal filtration tank 51 does not flow into the lower separation tank 55.

The charcoal filtration tank 51 and the lower separation tank 55 is provided with a plurality of filter cloth 57 in contact with each other. The filter 57 serves to prevent the pieces of charcoal 53 provided in the charcoal filtration tank 51 and other foreign matter from entering the lower separation tank 55.

The filter medium 57 is composed of an upper filter portion (57a) and a lower discharge portion (57b). The filter 57 is installed on the bottom surface of the charcoal filtration tank 51 and the lower separation tank 55 over the upper surface. In other words, the upper filter portion (57a) is provided to protrude upward from the bottom surface of the charcoal filtration tank 51 and filters foreign matter through a plurality of filter slits (57s) formed on one surface.

The lower discharge part 57b is provided to protrude downward from the upper surface of the lower separation tank 55 and discharges the filtered water through the upper filter part 57a. Therefore, the flowing water filtered through the filter 57, the pieces of charcoal 53 or other foreign matter is introduced into the lower separation tank (55).

The filter 57 is also provided with a plurality of surfaces in contact with the sand filtration tank 61 and the lower discharge tank 65 to be described below.

The charcoal filter moving path 59 is provided on the surface of the charcoal filter tank 51 and the lower separation tank 55 in contact with the sand filter 60 to be described below. The lower portion of the charcoal filter moving path 59 communicates with the lower separation tank 55 and the upper portion communicates with the sand filtration unit 60. Therefore, the charcoal filter moving path 59 is also a passage for flowing water from the charcoal filter 50 to the sand filter 60.

A charcoal filter part communication port 59 ′ is formed at a surface of the charcoal filter part moving path 59 in contact with the sand filter part 60. The charcoal filter communication port 59 'is a passage through which the water flowing through the charcoal filter moving path 59 flows into the sand filter 60.

The charcoal filter communication hole 59 'is also provided with the communication hole catching network 33 to remove foreign substances in the flowing water flowing into the sand filter 60. The measurement sensor 14 is provided inside the sand filtration unit 60 communicating with the charcoal filtration unit 59 '. The measuring sensor 14 may determine whether the breakthrough viscosity of the charcoal 53 provided in the charcoal filter 50 is measured by measuring the amount of pollutants of the flow water filtered by the charcoal filter 50.

In addition, the overflow preventing opening 29 is formed on the surface of the charcoal filtering unit 50 in contact with the sand filtration unit 60. When the overflow prevention device 29 also has a large amount of flowing water flowing into the charcoal filtering part 50, the flowing water flows directly into the sand filtering part 60 without passing through the charcoal filtering part 59. Play a role.

The overflow prevention device 29 is also provided with the overflow prevention device catching network 29 ′ to filter foreign substances in the flowing water flowing into the sand filtration unit 60.

The flowing water passing through the charcoal filter 50 is introduced into the sand filter 60. The sand filtration unit 60 is provided with a sand filtration tank 61 for filtering the flowing water using sand. The sand (63) for filtering the running water is provided in the sand filtration tank (61).

When the flowing water flows into the sand 63 of the sand filtration unit 60, the head of water is increased in the sand 63 by the inflow of the running water. When the head of water increases in the sand 63, the head of water is concentrated in the four-layer surface layer of the sand 63, which may lower the filtration effect.

Therefore, in order not to reduce the filtration effect of the sand 63, the depth of the sand filtration tank 61 in which the sand 63 is provided should be 1 m or more, and the sand 63 has a suitable effective particle size and uniformity coefficient. Should have

The appropriate effective particle diameter of the sand 63 provided in the sand filtration tank 61 is 0.45 ~ 0.7mm, the uniformity coefficient is preferably 1.7 or less. When the effective particle diameter of the sand 63 is 0.3 mm or less, the head of loss of the sand 63 is concentrated on the four-layer surface layer, so that an appropriate filtration rate is difficult to be obtained. And when the effective particle diameter of the sand 63 is 2mm or more, it is difficult to obtain the filtration effect by the sand (63).

Table 1 below describes the details of the sand (63) provided in the sand filtration tank (61). When the running water is filtered with the sand 63 provided in the sand filtration tank 61, the running water is filtered at a filtration speed of 100 to 150 m / d.

[Table 1] Selection of Filtration Doctors (Sand)

The lower portion of the sand filtration tank 61 is also separated from each other and the sand filtration tank 61 is provided with a lower discharge tank (65). The sand filter tank 61 and the lower discharge tank 65 is also provided with a plurality of filter pads 57 in contact with each other, the sand 63 and other foreign matter by the filter pad 57 is the lower discharge tank It does not flow into (65).

The sand filtration unit 60 is provided with an overflow preventing movement path 67 formed separately from the sand filtration tank 61. Water flowing through the overflow prevention port 29 may be immediately discharged to the outside through the overflow prevention movement path 67 without passing through the sand filtration tank 61.

The flowing water passing through the overflow preventing movement path 67 and the sand filtration tank 61 flows into the lower discharge tank 65 and is discharged to the outside. The amount of flowing water discharged by the discharge valve 17 of the discharge nozzle 15 can be adjusted.

In addition, the measurement sensor 14 is also provided inside the lower discharge tank 65 to measure the amount of contaminants in the running water filtered by the sand filtration tank 61. Therefore, by measuring whether the breakthrough point of the sand (63) provided in the sand filtration tank 61 can be replaced by the sand (63).

Hereinafter, the operation of the stepped wetland filter according to the present invention having the configuration as described above in detail.

Stepped wetland filter 10 of the present invention may be buried beneath the surface of the peripheral area 3 around the aquatic area 1 may be installed or may be installed seated on the upper surface of the peripheral area (3). When the stepped wetland filter 10 is buried under the surface of the periphery 3, the flowing water is introduced by a connecting pipe 5 from the water supply source to the stepped wetland filter 10.

When the stepped wetland filter 10 is installed on the upper surface of the surrounding area 3, an outer skin is installed on the outer surface of the base frame 11, and aquatic plants are planted on the upper surface of the stepped wetland filter. (10) can be matched with the surrounding environment.

And when the stepped wetland filter 10 is installed on the surface of the surface of the aquatic land 3 is installed by the pump (7) flows into the stepped wetland filter (10).

The flowing water introduced into the stepped wetland filter 10 is introduced into the inlet 25 of the settling portion 20 of the base frame 11. Water flowing into the inlet 25 is introduced into the settling tank 21 of the settling portion 20.

The foreign water flowing into the settling tank 21 is removed from the foreign matter by the catching net 27 provided on the upper portion of the settling tank 21 in which the inlet 25 is formed. When flowing water flows into the settling tank 21, the flowing water falls freely downward and falls to the bottom surface of the settling tank 21.

When the sedimentation tank 21 is filled with flowing water, the sediment in the flowing water is precipitated at the bottom of the sedimentation tank 21, and the flowing water is also filled in the sediment moving part 23 communicating with the sedimentation tank 21.

When the water level of the flowing water filled in the settling portion moving path 23 reaches the lower end of the settling portion communication port 31 provided in the upper portion of the settling portion moving path 23, the flowing water filled in the settling portion moving path 23 The charcoal filter 50 is moved. At this time, foreign matter in the running water is removed by the communication hole catching network 33 provided in the precipitation communication port 31.

The amount of flowing water flowing into the settling tank 21 is increased so that the flow of water flows into the settling unit 20 when the water level exceeds the upper end of the settling communicating port 31. The charcoal filtration part 50 is moved to the charcoal filtration part 50 through the overflow prevention device 29 provided at the upper end of the settling part 20 without passing through the entire moving path 23.

Therefore, even if the amount of flowing water flowing into the sedimentation part 20 increases, the flowing water does not overflow to the outside of the basic frame 11 and is directly moved to the charcoal filtration part 50 through the overflow prevention port 29. . At this time, the foreign matter in the running water is removed by the overflow preventing device catching network 29 ′ provided in the overflow preventing device 29.

The flowing water introduced through the precipitation communication port 31 is filled in the charcoal filtration tank 51 of the charcoal filtration unit 50. Since the charcoal 53 is provided inside the charcoal filtration unit 50, foreign matters and odors in the running water are removed by the charcoal 53.

The flowing water filtered by the charcoal 53 of the charcoal filtration tank 50 is moved to the lower separation tank 55 through the lower manure 57. The flowing water passing through the lower separation tank 55 is filled in the charcoal filter moving path 59.

When the water level of the flowing water filled in the charcoal filter moving path 59 reaches the lower end of the charcoal filter communication port 59 'provided at the upper portion of the charcoal filtering part moving path 59, the flow of the sand filtering part 60 Flows into). Foreign matter is removed by the communication hole catching network 33 provided in the charcoal filter communication hole 59 'also flowing through the charcoal filter communication hole (59').

When the water level flowing into the charcoal filtration unit 50 exceeds the upper end of the charcoal filtration unit 59 ', the water flows to the overflow prevention port 29 provided at the top of the charcoal filtration unit 50. Through the sand filtration unit 60 is introduced. At this time, the foreign matter in the running water is removed by the overflow preventing device catching network 29 ′ provided in the overflow preventing device 29.

The flowing water introduced through the charcoal filter communication port 59 'is introduced into the sand filtration tank 61 of the sand filtration unit 60. The sand 63 is provided in the sand filtration tank 61 to remove foreign matters in the running water by the sand 63.

The flowing water filtered by the sand 63 of the sand filtration tank 61 is introduced into the lower discharge tank 65 through the mandrel 57 provided on the bottom surface of the sand filtration tank 61. In addition, the flowing water passing through the overflow prevention movement path 67 provided in the sand filtration unit 60 is also introduced into the lower discharge tank 65.

The flowing water introduced into the lower discharge tank 65 is discharged to the outside through the discharge nozzle 15. At this time, by adjusting the discharge valve 17 of the discharge nozzle 15, it is possible to adjust the amount of discharged water.

In addition, when it is determined that the breakthrough points of the charcoal 53 and the sand 63 have been exceeded by examining the amount of pollutants measured by the measuring sensor 14 provided in the base frame 11, the base frame 11 may be The door 13 may be opened to replace the charcoal 53 or the sand 63 provided therein.

An embodiment of the stepped wetland filter of the present invention configured as described above is shown in FIGS. 6 and 7. The staircase wetland filter of the present invention was installed in the aquatic area of the raw water concentration is 4 grade water, turbidity is 4 ~ 30 NTU, T-P is 0.05 ~ 0.10 mg / L, turbidity is 60 ~ 85%.

The stepped wetland filter of the present invention filtered the runoff of the aquatic area at a filtration rate of 10 m / d and the results are shown in Table 2 below and FIGS. 6 and 7.

[Table 2] Experimental Results of Improved Wetland Filter

 As shown above, the turbidity of the aquatic area was 50.9-364.4%, T-P 27.7-39.6%, and Chl.-a 50-55%.

In the scope of the basic technical spirit of the present invention, many modifications are possible to those skilled in the art, and the scope of the present invention should be interpreted based on the appended claims. .

According to the stepped wetland filter according to the present invention as described in detail above, the following effects can be obtained.

It can be applied to aquatic areas that may cause problems of cultural property or water quality change that are vulnerable to chemicals because the water flows from the aquatic area into the stepped wetland filter and filters the water by the physical method using the media provided in the filter tank. . Therefore, it is possible to filter the flow of various kinds of aquatic lands, so there is an advantage that the applicability to aquatic lands is expanded.

In addition, natural filtration such as charcoal, sand, and gravel is used instead of the artificial filtration to purify the water, and the natural filtration method that filters foreign matter through the filtration protects the environment and has a natural advantage.

Claims (21)

A basic frame; Stepped wetland filter characterized in that it comprises a plurality of filtration step is provided in the interior of the base frame step by step by the filter medium flowing water flowing into the interior of the base frame. The method of claim 1, The base frame is a stepped wetland filter, characterized in that it further comprises a sedimentation section in which foreign matter in the flowing water is precipitated before being filtered by the filtration unit. The method of claim 1, Stepped wetland filter, characterized in that the filter medium provided in the filter unit is at least one or more of charcoal, sand, gravel. The method of claim 2, The filtration unit, Charcoal filtration unit for filtering the water by the charcoal provided therein; Stepped wetland filter characterized in that it comprises a sand filter for filtering the runoff filtered by the charcoal filter again with sand. The method of claim 2, The precipitation portion, A settling tank in which foreign matters in the flowing water flowing into the settling unit are precipitated; Step-type wetland filter characterized in that it comprises a sedimentation part movement path that is in communication with the sedimentation tank and the lower portion is in communication with the filtration unit and the flow inflow to the sedimentation tank is moved to the filtration unit. The method of claim 4, wherein The charcoal filter, Charcoal filtration tank which is filtered by the charcoal provided in the flowing water flowing from the precipitation portion; A lower separation tank provided at a lower portion of the charcoal filtration tank, into which only flowing water filtered by the charcoal is introduced; Stepped wetland filter characterized in that it comprises a charcoal filter moving path that is in communication with the lower separation tank and the bottom is in communication with the sand filtration unit and the upper flows flowing into the bottom separation tank is a passage for moving to the sand filtration unit. . The method of claim 4, wherein The sand filter, Sand filtration tank is filtered by the sand provided therein flowing from the charcoal filtration unit; A lower discharge tank provided at a lower portion of the sand filtration tank into which only flowing water filtered by the sand is introduced; Stepped wetland filter characterized in that it comprises a discharge nozzle for discharging the flowing water introduced into the lower discharge tank to the outside. The method of claim 7, wherein Stepped wetland filter, characterized in that the effective particle diameter of the sand provided in the sand filtration tank is 0.45 ~ 0.7mm and the uniformity factor is 1.7 or less. The method of claim 5, The settling tank is Stepped wetland filter characterized in that it is provided at the top of the settling tank, and further comprising a catching network for filtering foreign matter in the flowing water flowing into the settling tank. The method according to claim 5 or 6, The sedimentation part movement path and the charcoal filtration part movement path, The sedimentation part moving path is provided at the point communicating with the filter part and the charcoal filter moving part is connected to the sand filtration part and characterized in that it further comprises a communication port catching net for filtering foreign matter in the running water. Stepped wetland statue. The method according to claim 6 or 7, The charcoal filter tank and the sand filter tank, It is provided on the bottom surface of the charcoal filtration tank and the bottom surface of the sand filtration tank, the charcoal filter and the filter medium provided in the sand filtration tank further comprises a filter to prevent the separation from the lower separation tank and the lower discharge tank Stepped wetland statues characterized by. The method of claim 7, wherein The discharge nozzle, Stepped wetland filter characterized in that it further comprises a discharge valve for controlling the amount of water discharged to the discharge nozzle. The method of claim 4, wherein The sedimentation unit and the charcoal filtration unit, Stepped wetland filter characterized in that it further comprises an overflow prevention port to be introduced to the next step before the flowing water flowing into the sediment and the charcoal filtration unit to the outside. The method of claim 13, The sedimentation unit and the charcoal filtration unit, Stepped wetland filter characterized in that it further comprises an overflow prevention catching network for filtering foreign matter in the flowing water flowing through the overflow prevention. The method of claim 7, wherein The basic frame, Stepped wetland image is provided in the base frame, characterized in that it further comprises a measuring sensor for measuring whether the breakthrough viscosity of the filter medium provided in the base frame. The method of claim 15, The measuring sensor is a stepped wetland filter, characterized in that provided in the sand filtration tank and the lower discharge tank. The method of claim 1, The basic frame, Stepped wetland image is provided on the outer surface of the base frame, further comprising an outer skin consisting of a material corresponding to the surrounding environment. The method of claim 17, The stepped wetland image, characterized in that the aquatic plants are planted on the upper surface of the outer skin. The method of claim 1, The base frame is a stepped wetland filter, characterized in that installed on the surface of the surrounding land surrounding the aquatic area. The method of claim 1, The base frame is a stepped wetland image, characterized in that installed in a state buried beneath the surface of the surrounding area around the aquatic area. The method of claim 1, The basic frame, Stepped wetland bed characterized in that it further comprises a pump for providing power to inflow.

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