KR20030026937A - Artificial wetland for purifying wastewater of sewerage, lake and river - Google Patents

Abstract

PURPOSE: Provided is an artificial wetland for natural purification of sewage or stream water. CONSTITUTION: The artificial wetland includes a water tank(10) in which sewage or polluted stream water is introduced and stored for a predetermined retention time; a plurality of vegetation tanks(50) filled with sand or planting members for growing aquatic plants therein and installed at an upper portion of the water tank(10); a microorganism contact bed(70) being comprised of a plurality of string shape or bar shape membranes(71) and installed in a lower portion of the water tank(10); a plurality of distributors(80) installed in the water tank at regular intervals for supplying air to the microorganism contact bed; and a sludge scrapper(90) installed at the bottom of the water tank for collecting and discharging sludge.

Description

Artificial wetland for purifying wastewater of sewerage, lake and river}

The present invention relates to an artificial wetland for purifying contaminated sewage, lake water and river water. More specifically, the surface of the artificial wetland installs a vegetation box in which aquatic plants are planted to remove nutrients such as nitrogen and phosphorus, and artificial wetland The present invention relates to an artificial wetland that can remove organic substances in the water by installing a microbial contact layer in which microorganisms are attached to form a microbial membrane.

In order to use land efficiently, rivers have been straightened or dredged, and the river's self-cleaning ability has been lost. The pollution of rivers is getting worse due to the increase of pollutants due to rapid industrialization and urbanization. In particular, chemical fertilizers used by farmers and livestock wastewater discharged from livestock farms promote the eutrophication of rivers. In order to solve this river pollution problem, it would be desirable to block all pollutants that pollute the river, but this is not practical.

Recently, various river water purification methods have been developed to treat contaminated river water in a natural way. For example, artificial vegetation islands install floating facilities with aquatic plants on the surface of rivers to remove nutrients from the water, and artificial wetlands form wetlands filled with sand or gravel on the exclusion of rivers and mines. It is a technology to remove organic matter using a microbial film attached to the surface of the gravel. In addition, a technology was developed to remove nutrients by installing sand layers or vegetable mats on top of the filtration layer of artificial wetlands and planting aquatic plants.

As such, artificial wetlands and artificial vegetation islands are nature-friendly methods for purifying polluted water using natural microorganisms and plants. However, aquatic plants used to remove nutrients in the water grow slowly, so a large cultivation area is required to remove the desired nutrients. Therefore, it is not easy to secure land in our country where the land area is small and the river is used as farmland. Therefore, there is a need for a high-efficiency artificial wetland that can produce a large effect with a small area.

1 and 2 is a cross-sectional view schematically showing an example of the artificial wetland according to the prior art, as shown in Figure 1, first filled with crushed stone or gravel in the pond 110 formed to a predetermined depth in the jimyeoji or exclusion of the river To form a mediator layer 130 having a predetermined thickness, and to form a sand layer 150 on which the aquatic plant 190 is planted on the mediator layer 130, and a sedimentation basin having an underwater pump 140 at the center thereof. 160 is installed. Therefore, when contaminated river water flows into the sand layer 150, nutrients such as nitrogen and phosphorus are removed by the aquatic plant 190 planted in the sand layer 150. And while passing through the filter medium layer 130 is filtered or decomposed by the microorganisms are introduced into the sedimentation basin 160. And the water that is not sufficiently purified is purified by repeating the circulation process flowing back into the sand layer 150 by the water pump 140. And Figure 2 is a cross-sectional view showing another example of the artificial wetland according to the prior art, filling the crushed stone or gravel in the pond 210 formed to a predetermined depth to form a filter layer 230, the filter layer 230 In the upper part is installed a plant mat 270 is aquatic plant 290 is planted, the center is to install an air diffuser 280 that can supply air.

However, as described above, the artificial wetland according to the prior art makes the media layer by using a material having a small specific surface area and porosity, such as crushed stone or gravel, so that the media layer is blocked when a large amount of floating material is introduced or the microorganism is excessively propagated. There was a problem that the sludge is not discharged. In order to prevent this, maintenance costs are high because backwashing is frequently performed or the media must be replaced periodically. In addition, in order to replace the occluded media layer, it is necessary to drain all the water by mobilizing heavy equipment and replace all the crushed stone and sand, so that the river water cannot be treated for a considerable period of time.

In addition, the artificial wetland according to the prior art is to install a sand layer on top of the filter media layer or plant mat to plant the aquatic plants, such a sand layer is easy to occlude because of the small porosity, as well as to filter or replace aquatic plants There is a problem of damaging the layer, the vegetable mat was easily rotten or scattered to contaminate the artificial wetland.

In addition, the conventional wetland uses a large surface area because of the formation of a filter bed using litter or gravel having a small specific surface area and porosity, and thus requires a large land area, which is not suitable for domestic circumstances where the site is narrow. Because gravel is used, the environment may be damaged for gravel harvesting. Except in which artificial wetlands are formed, or most of the papers are low-lying areas, so during the summer flooding, there was a problem of landslides being buried or blocked.

In addition, the conventional artificial wetland had a problem that the water purification function of the artificial wetland stopped the growth of the water plants or microorganisms in winter.

The present invention has been made in consideration of the problems of the prior art, and the main object of the present invention is to use a stick contact material or a rod having a large specific surface area and porosity, instead of forming a media layer using crushed stone or gravel having a small specific surface area and porosity. A microbial contact layer is formed as a contact material, and a vegetation box filled with sand or a plant member is installed on top of the microbial contact layer to facilitate the management of the aquatic plant and the contact layer and to increase the purification efficiency. It is to provide artificial wetlands that can reduce construction and maintenance costs and reduce land use area.

Another object of the present invention is to bind microbial contact materials by straightening microbial contact materials by tying several strands of string contact materials to each other and suspending a weight body at the bottom thereof, or by installing a lattice weight frame at the bottom of the string contact materials to give downward tension. The contact materials are not injured, twisted or agglomerated to facilitate maintenance, facilitate installation and construction, and minimize defects.

Still another object of the present invention is to unite the vegetation box and vegetation box support frame in which aquatic plants are planted to a predetermined size and to use the vegetation material of a non-corrosive material for convenience of installation, ease of maintenance and durability of the facility. To improve.

Another object of the present invention is to install artificial wetlands easily in difficult places to secure the site by installing a narrow, long channel artificial wetlands along the drains, farms or river banks, and heating facilities such as vinyl houses or solar heat collectors. It is to provide artificial wetland that can grow aquatic plants even in winter.

Still another object of the present invention is to provide an artificial wetland that can reduce the cost and construction period as well as change the location according to the change of the surrounding environment by being able to install the tank of the waterway artificial wetland in a prefabricated manner.

1 and 2 is a cross-sectional view showing an example of artificial wetland according to the prior art,

3 is a cross-sectional view showing an example of artificial wetland according to the present invention;

4 is a plan view of an artificial wetland according to the present invention;

5 is a perspective view showing a vegetation box according to the present invention,

6 is a perspective view showing an example of a granular vegetation member according to the present invention;

7 is a perspective view showing a vegetation box support frame and an angle frame according to the present invention;

8 is a perspective view showing the installation structure of the string contact member according to the present invention;

9 is a perspective view showing another installation structure of the string contact member according to the present invention;

10 is a cross-sectional view of the artificial wetland is installed bar-shaped contact member according to the present invention,

11 is a schematic perspective view showing various installation examples of the channel-type artificial wetland according to the present invention;

12 to 14 is a cross-sectional view showing a waterway type artificial wetland according to the present invention,

15 is an exploded perspective view showing an example of a plastic structure according to the present invention;

16 is an exploded perspective view showing another example of a plastic structure according to the present invention;

17 is an exploded perspective view showing a support block according to the present invention;

18 is a partial cutaway side view showing an example of a waterway type artificial wetland according to the present invention;

19 is a schematic plan view showing a channel artificial wetland according to the present invention.

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

1: artificial wetland 2: settlement

3: pump 4: flow tank

5: solar heat collector 6: heat exchanger

7: settling tank 8: sludge storage tank

10: tank 11: tank body

13: hanging jaw 15: inclined portion

17: pillar 18: cross beam

20: vegetation box support frame 22: weight

23, 25: front and rear face plate 24: grid weight frame

30: coupling means 48: heat insulation layer

50: vegetation box 53: porous plate

54: front and rear left and right side plate 56: planting member

60: support block 61: left and right support blocks

63, 65: before and after support block 70: microbial contact layer

71: sticky contact material 77: rod-shaped contact material

In order to achieve the above object of the present invention, the artificial wetland according to the present invention, the contaminated sewage, lake water and river water flows into a predetermined size formed to be discharged after staying for a certain time; A plurality of vegetation boxes installed on top of the tank and filled with sand or planting members to support the aquatic plants; A microbial contact layer made of a plurality of string contact materials or rod-shaped contact materials installed under the vegetation box; An air dispersing device installed in the tank to supply air to the microbial contact layer; Installed on the bottom of the tank is characterized in that it comprises a sludge discharge device for discharging microbial sludge.

The tank according to the present invention is made of concrete, plastic, FRP or high-density order sheet, and the upper side of the inner wall is provided with a jaw that can support the vegetation box, the lower slope is a predetermined slope to smoothly collect the sludge An additional portion is formed, and the sludge discharge means for collecting and discharging the sludge is installed at the bottom.

And the vegetation box according to the present invention is made of a bottom plate and the front and rear left and right side plates, the bottom plate is formed with a plurality of through-holes so that the roots of the aquatic plants can be extended, the inside to support the aquatic plants Sand or planting member is characterized in that the filling.

Subsequently, the planting member is made of a relatively light material, which does not rot in water, such as ceramics and plastics, and its specific gravity is greater than 1, so that it does not float in water.

And the locking jaw of the tank has a grid form so as to support the vegetation box, characterized in that a plurality of vegetation box support frame having a size that can be lifted by manpower or equipment is installed.

Subsequently, an upper end of the string contact member according to the present invention is fixed to the vegetation box, and a lower end thereof is tied in pairs of several strands, and a weight body is installed at the lower end thereof.

In addition, the upper end of the string contact material according to the present invention is fixed to the vegetation box support frame, characterized in that the lower end of the grid-shaped weight frame is installed.

In addition, the membrane-type contact member according to the invention is characterized in that the stacking stacked in the form of a firewood stacked on the support frame at the bottom.

On the other hand, another form of the water tank according to the present invention is a waterway-type water tank that is installed narrow and long along the dike of the drainage, agricultural waterways or rivers, the front and rear surfaces are open and bent so that the locking jaw is integrally formed on the upper left and right walls. A plurality of tank bodies having a predetermined inclination portion formed at a lower portion thereof, a recess formed integrally at a bottom surface thereof, and coupling means for coupling adjacent tank bodies to both open ends; In order to seal the open front and rear surfaces of the water tank body, the water tank body has the same cross-section and its outer peripheral surface is integrally formed with a coupling means corresponding to the water tank body. It characterized in that it comprises a front and rear face plate formed with a sludge discharge port is discharged.

The water channel is formed to support the side wall of the water tank body and the left and right support blocks integrally formed with an inclined portion, the front and rear plates, and the inlet or outlet of the river water and the sludge discharge port are installed. It is characterized by being supported by a support block made of front and rear support blocks.

In addition, the artificial wetland according to the present invention is characterized in that it can be used in winter by installing a plastic house and a solar heat collecting plate to heat river water or to form a greenhouse using solar heat.

Hereinafter, the artificial wetland according to the present invention will be described in detail with reference to the accompanying drawings. 3 and 4 are a cross-sectional view and a plan view showing an example of the artificial wetland according to the present invention. As shown, the artificial wetland 1 according to the present invention includes a tank 10 having a predetermined size, and a plurality of vegetation boxes 50 installed on the tank 10 and in which aquatic plants 90 are planted. ), A microbial contact layer 70 installed in the water below the vegetation box 50, an air dispersing device 80 installed at a predetermined interval in the water tank 10 to supply air, and the water tank 10 Is installed on the floor is composed of a sludge discharge device 90 for discharging the active microbial sludge.

The water tank 10 is to allow the contaminated sewage, lake water or river water to flow for a time required for purification, as shown in FIG. Or the slopes of the ponds are waterproofed with order sheets. For example, in large tanks, it is desirable to waterproof the concrete structure or slope with a seat sheet, and in a narrow and long channel, a plastic structure made of plastic or FRP is preferable. In this case, the plastic structure is formed by combining a plurality of injection molded unit structures.

In addition, a locking jaw 13 for supporting the vegetation box 50 or the vegetation box support frame 20 is formed at the upper side of the inner wall of the tank 10, and the sludge is smoothly collected at the lower part of the tank 10. The inclined part 15 is formed so that it may be carried out. In addition, a plurality of pillars 17 or cross beams 18 are installed in the water tank 10 so as to support the vegetation box 50 or the vegetation box support frame 20 installed thereon.

Subsequently, the vegetation box 50 according to the present invention is installed in a plurality of horizontal and vertical directions on the top of the tank 10, as shown in Figure 5, made of a bottom plate 53 and the front and rear left and right side plates 54 A plurality of through holes 52 are formed in the bottom plate 53 so that the roots of the aquatic plants can extend. In this case, the bottom plate 53 and the side plate 54 are integrally injection molded or separately manufactured and then welded or screwed together. The vegetation box 50 is made of wooden boards, plastic, zinc alloy, stainless steel, etc., and has a size that can be easily installed or lifted using manpower or equipment.

And the vegetation box 50 is filled with sand or granular planting member (a kind of artificial sand) to support the root of the aquatic plant 90. The planting member 56 preferably has a specific gravity such that it does not rot in water and does not float in water. Therefore, when the planting member 56 is made of ceramic or plastic, a light weight (plastic foam) is put in a lighter weight in a relatively heavy ceramic and a weight (ceramic, metal) is put in a relatively lighter plastic so that its specific gravity is greater than 1. It is desirable to. At this time, the planting member 56 may be any shape as long as it can maximize the porosity such as ball shape, hemispherical shape, tube shape, and cup shape. For example, as shown in FIG. 6, a plastic layer 59 having a predetermined thickness is formed on the outer circumferential surface of the metal wire 58 having a predetermined diameter and cut to a predetermined length may be used as the planting member 56.

On the other hand, it is preferable to install a vegetation box support frame 20 supporting the vegetation box below the vegetation box 50. That is, when the width of the tank 10 is narrow, the vegetation box 50 may be installed on the hooking jaw 13 formed on both side walls, but when the width of the tank 10 is wide, a plurality of vegetation box support frames ( 20) it is preferable to install the vegetation box 50 on it. In addition, it is preferable to fix the vegetation box 50 or the vegetation box support frame 20 by installing an angle frame 21 on the locking jaw 13. As shown in Figure 7, the vegetation box support frame 20 is a lattice-shaped frame made of stainless steel or the like that does not corrode in water, and has a size that can be applied to attraction or predetermined equipment. Therefore, a plurality of vegetation box support frame 20 is installed in the horizontal and vertical direction, and a plurality of vegetation boxes 50 are installed at predetermined intervals on the locking step 13 of the tank 10.

Subsequently, the microbial contact layer 70 is formed of a string contact material 71 or a rod contact material 77 made of synthetic fiber or plastic material which does not rot in water. At this time, the upper end of the string contact material 71 is fixed to the porous plate of the vegetation box 50 or fixed to the vegetation box support frame 20. As shown in FIG. 8, the lower end of the string contact member 71 binds several strands of the string contact member 71 to each other and then installs a weight body 22 at the lower end thereof, or as shown in FIG. 9. Similarly, the lattice-shaped intermediate frame 24 is installed at the lower end of the string contact member 71. At this time, the grid-shaped weight frame 24 has a form similar to the vegetation box support frame 20, while the size is smaller than the vegetation box support frame 20, the locking step 13 of the tank 10 You can pass between. As such, when a plurality of string contact members 71 are installed between the vegetation box support frame 20 and the lattice weight frame 24 and unitized, the installation period can be shortened because they can be manufactured, assembled, and supplied at the factory. And, it is very convenient when installing or replacing the microbial contact layer 70. And the rod-like contact member 77, as shown in Figure 10, it is preferable to install a horizontal support frame 78 in the water tank 10 and stacked in the form of firewood stacked thereon.

And the air dispersing device 80 is installed at regular intervals in the water tank 10 is an air supply pipe 81 in communication with the blower not shown, and the diffuser 83 and the diffuser pipe in communication with the air supply pipe 81 Around 83, it is comprised by the acid guide pipe 84 installed perpendicularly. Therefore, the air ejected from the diffuser 83 maintains the inside of the water tank 10 in an aerobic state and at the same time forms an upward flow so that the river water and the like flow back through the vegetation box 50. On the other hand, the sludge discharge device 90 is composed of a sludge discharge pipe 91 that can be connected to the pump (not shown) if necessary to discharge the sludge collected in the bottom of the tank to the outside.

On the other hand, Figure 11 is a conceptual diagram showing another embodiment of the artificial wetland according to the present invention, as shown, A is to dig a trench of a predetermined depth on the bank and to install a tank 10 made of a plurality of plastic structures therein A channel artificial wetland (1) is formed, and B, C, and E are provided with a plurality of concrete support blocks at an upper end, a small end, or a lower end of the bank to make a channel, and then a plurality of plastic structures are assembled therein. Type artificial wetlands (1) is formed, D is to excavate the slope of the embankment to make a waterway, and then assembled a number of plastic structures to form artificial wetlands (1). As described above, the channel-type artificial wetland 1 according to the present invention can be installed in a drainage channel, a farm channel, a farm road or a bank of rivers, and the like, thereby solving the problem of insufficient site selection.

12 to 14 show various types of water tanks 10 that can be installed in the waterway type artificial wetland 1 according to the present invention, and FIG. 12 is a plastic structure installed in a trench of a predetermined depth, and FIG. 13. Is a channel made of a plurality of concrete support blocks 60 and a plastic structure installed therein, Figure 14 is excavated the slope of the embankment and a channel made of a plurality of concrete support blocks 60 and a plurality of plastic structures therein It is installed. At this time, the water tank 10 made of the plastic structure is to connect a plurality of extruded unit structure. In addition, the water tank 10 has a locking jaw 13 for supporting the vegetation box 50 or the vegetation box support frame 20 on the upper side of the inner wall in common, and is inclined so as to smoothly collect the sludge at the bottom thereof. Part 15 is formed, the bottom is formed with a recess 17 is provided with a discharge pipe for discharging the activated sludge.

Subsequently, the plastic or FRP structure 10 according to the present invention is largely composed of a channel body 11 and front and rear plates 23 and 25, and the channel body 11 is illustrated in FIG. 15. As described above, the front and rear surfaces are opened and bent so that the locking jaw 13 is integrally formed at the upper left and right side walls, and the inclined portion 15 and the recess 17 are integrally formed at the lower portion thereof. And the coupling means 30 for coupling the neighboring channel body 11 in the vicinity of the open front and rear surfaces are formed. The coupling means 30 is composed of a coupling protrusion 36 and a coupling groove 37 formed to correspond to both ends or front and rear plates 23 and 25 of the channel body 11, or as shown in FIG. Likewise, the flange 35 is formed so as to correspond to both ends of the channel body 11 and the front and rear plates 23 and 25. At this time, a plurality of fastening holes 34 are formed in the flange 35 and fastened to the fixing bolts 32. And a predetermined sealing member 33 is installed in the coupling means.

On the other hand, the channel body 11 is provided with a fixing groove 39 for installing a predetermined partition wall 26, the partition 26 temporarily blocks the flow of river water during repair or repair of the tank. Or if the tank is installed obliquely serves to keep the surface constant.

Subsequently, the left and right face plates 23 and 25 function to seal the front and rear surfaces of the open channel body 11 as shown in FIG. 15, and the front and rear face plates 23 and 25 are the channel faces. It has the same cross section as the water tank main body 11, the outer peripheral surface is formed with a predetermined coupling means (35, 36, 37), the inlet 96 and the outlet (97) for the inflow or discharge of the river water is formed, The sludge discharge port 99 through which sludge is discharged is formed.

17 is a perspective view showing an example of the concrete support block 60 for supporting the water tank 10 made of a plastic or FRP structure according to the name. As shown, the support block 60 is a left and right support block 61 for largely supporting the left and right of the channel body 11, and the front and rear support blocks 63 for supporting the front and rear plates (23, 25), 65). The left and right support blocks 61 are formed integrally with the side wall 62 and the inclined portion 64 so as to support the side surface of the channel body 11, and both sides are easy to manufacture, transport and install. It is divided into Therefore, when the two left and right support blocks 61 are installed in parallel, a space for installing the plastic structure 10 is formed. At this time, if the left and right support blocks 61 are installed at a predetermined distance apart from each other, a space in which the recess 17 of the channel body 11 is provided may be provided. Meanwhile, the front and rear support blocks 63 and 65 are formed to support the front and rear face plates 23 and 25, and the inflow port 66, the discharge port 67, and the sludge discharge port 69 of the stream water are respectively installed.

Therefore, as shown in the partial side cross-sectional view of FIG. 18, a plurality of left and right support blocks 61 are installed to face each other to form a predetermined space, and the plurality of channel body 11 is coupled to the space, and then at both ends. The front and rear face plates 23 and 25 and the front and rear support blocks 63 and 65 are installed to make a water tank. The sludge discharge pipe 91 for discharging the sludge is piped to the lower part of the channel type water tank 10, and the air supply pipe 83 for supplying air into the channel type water tank is piped to a middle portion of the channel type water tank. An diffuser 83 is provided for each section. Subsequently, the microbial contact material layer 70 is formed using a plurality of string- or rod-shaped contact materials in the waterway type tank, and a plurality of vegetation boxes 50 are installed thereon to plant the aquatic plants 90. The artificial wetland 1 according to the invention is to be formed.

Hereinafter, the operation of the artificial wetland according to the present invention will be described in detail with reference to the accompanying drawings. 19 is a schematic plan view showing an example of the channel-type artificial wetland according to the present invention. As shown, the channel-type artificial wetland 1 is formed long on the bank B along the river R. As shown in FIG. . In addition, the upstream side of the artificial wetland 1 is provided with a sedimentation tank 2 for removing suspended matter and contaminants contained in the introduced river water, and a flow tank 4 for temporarily storing the inflow water. At this time, the flow tank 4 is provided with a heat exchanger 6 in which heat exchange with hot water heated by the solar heat collecting plate 5 is performed. Accordingly, the stream water introduced through the flow tank 4 is gradually flowed downstream along the artificial wetland 1 to remove the organic material by the microorganisms of the contact layer 70 maintaining the aerobic state, and to the air diffuser 80. Nitrogen and phosphorus are removed by the assimilation of the aquatic plant 90 is conveyed upward along the upstream formed by. And this purification process is repeatedly performed during the residence period.

Subsequently, the purified river water is discharged back to the river via the sedimentation basin 7 provided downstream of the artificial wetland 1. And the sludge precipitated at the bottom of the waterway type tank 10 is discharged to the sludge storage tank 8 along the sludge discharge pipe. And reference numeral 3 is a pump for transporting river water. In addition, since the channel-type artificial wetland 1 is horizontally installed at an angle less than the inclination angle of the river, the water of the river can be naturally discharged by using the water head difference.

On the other hand, as shown in Figure 12, the channel-type artificial wetland 1 according to the present invention is installed and replaced with the planting box 50, the microbial contact layer 70 by laying a predetermined rail 28 on both sides of the artificial wetland ) And the pulley 27 can be installed to automate or easily carry out tasks such as the installation and replacement, planting and harvesting the aquatic plant 90 and the like.

In addition, as shown in Figure 13, the waterway type artificial wetland 1 according to the present invention is provided with a vinyl house 40, a predetermined gap between the support block 60 and the water tank 10 made of a plastic structure. The insulating layer 49 is formed, and in the bottom or the bottom of the plastic water tank 10, a porous tube 43 or a circulation tube 47 capable of supplying hot water heated by solar heat or the like may be used to grow purified plants even in winter. Temperature can be maintained. Therefore, the artificial wetland according to the present invention can be used to purify river water by using microorganisms and aquatic plants even in winter.

As described above, the artificial wetland according to the present invention is a microbial contact layer made of a stick contact material or a rod contact material having a large specific surface area and a large porosity, instead of installing a media layer composed of crushed stone or gravel having a specific surface area and a small porosity. By increasing the porosity, the porosity is more than doubled to prevent the blockage caused by sludge and inflow suspended matter, and the sludge is discharged smoothly, and the concentration of microorganisms that decomposes organic matter in wetlands is increased by using the large specific surface area of microbial contact materials. By reducing the size of facilities to less than one-third, the required land area is reduced and construction costs are reduced.

The present invention also allows the plant material to be planted in a plant box of a predetermined standard filled with a material member made of sand, ceramic or plastic instead of planting aquatic plants on the sand layer or the vegetable planting mat of the media layer itself. It solves the problems of wetland pollution and plant-based collapse, prevents pore blockage due to overgrowth of algae and microorganisms when inflow of sewage, river and lake water with high pollution to the upper sand layer, and destroys the filter layer when managing plants planted in the sand layer. Disadvantages can be eliminated, and planting and alteration of the plant is free effect.

In addition, the present invention has the effect of improving the quality and production costs by planting the planting box and the planting box support frame to a predetermined size, it is easy to install the site, the construction period is short, after installation Since separate lifting is possible, there is an effect of easy maintenance.

In addition, the present invention in the installation of the string-type contact material, the upper end of the contact member is fixed to the vegetation box or vegetation box support frame and the bottom of the contact member is tied in pairs by several strands to fix the weight body, or fixed to the grid weight frame It is integrated with each contact unit to prevent twisting and entanglement, and by applying tension to the lower part by weight to straighten the contacting material to increase the effective volume of the wetland to improve the purification efficiency and to be integrated with the vegetation box support frame. It has the effect of improving maintainability.

Meanwhile, the channel-type artificial wetland according to the present invention solves the problem of the selection of artificial wetland sites which are absolutely insufficient by installing a narrow and long width along the bank of the river, and does not require large-scale civil works, and does not allow soil to be introduced during flooding. It is not only easy to install greenhouse facilities such as houses, but also has the effect of reducing the treated water.

In addition, a waterway-type artificial wetland according to the present invention can grow aquatic plants in winter by installing a vinyl house, and can reduce maintenance costs by heating river water using a solar heat collecting plate installed using a slope of a levee. By installing a pulley that can move along the left and right, there is an effect that can be easily performed all the work.

Claims (13)

A water tank of a predetermined size installed to allow polluted sewage, lake water, or river water to flow in and be discharged after a predetermined time; A plurality of vegetation boxes installed on top of the tank and filled with sand or planting members to support the aquatic plants; A microbial contact layer made of a plurality of string contact materials or rod-shaped contact materials installed under the vegetation box; An air dispersing device installed in the water tank for supplying air to the microbial contact layer and refluxing water in the water tank causing upflow; Installed on the bottom of the tank artificial sludge for natural purification of sewage, lake water and river water, characterized in that comprising a sludge discharge device for discharging microbial sludge. The method of claim 1, The water tank is made of concrete, plastic, FRP or high-density order sheet, and the inner wall is provided with a locking jaw to support the vegetation box, the lower portion is formed with a predetermined slope to smoothly collect the sludge The artificial wetlands for natural purification of sewage, lake water and river water, characterized in that the sludge discharge means for collecting and discharging the sludge at the bottom. The method of claim 2, The catching jaw has artificial lattice for natural purification of sewage, lake water and river water, characterized in that a plurality of vegetation box support frame has a grid shape to support the vegetation box and has a size that can be lifted by manpower or equipment. The method of claim 1, The upper end of the string contact material is fixed to the vegetation box, the lower end of the pair is tied to tie a few strands, and the artificial wetlands for natural purification of sewage, lake water and river water, characterized in that the weight body is installed on the lower end. The method according to claim 1 or 3, The upper end of the string contact material is fixed to the vegetation box support frame, the lower end of the artificial wetlands for natural purification of sewage, lake water and river water, characterized in that the grid-shaped weight frame having a similar shape to the vegetation box support frame. The method of claim 1, The vegetation box is composed of a bottom plate and the front and rear left and right side plates, the bottom plate is formed with a plurality of through-holes to extend the roots of the aquatic plants, therein sand or planting members to support the aquatic plants Artificial wetland for natural purification of sewage, lake water and river water, characterized in that the filling. The method of claim 6 The plant member is made of ceramic or plastic, and its specific gravity is greater than 1 artificial wetlands for natural purification of sewage, lake water and river water. The method of claim 7, wherein The plant member artificial wetlands for natural purification of sewage, lake water and river water, characterized in that the plastic layer of a predetermined thickness formed on the outer peripheral surface of the metal wire of a predetermined diameter and cut to a predetermined length. The method of claim 1, The water tank is artificial wetlands for natural purification of sewage, lake water and river water, characterized in that the width is installed narrow and long along the drainage, agricultural waterways or river banks. The method of claim 9, The tank has a front and rear surface open and bent so that the locking step is integrally formed at the upper left and right side walls, a predetermined inclined portion is formed at the lower portion thereof, and a recess is integrally formed at the bottom surface thereof, and the adjacent tank body is opened at both open ends. And a plurality of tank body provided with a coupling means for coupling to each other; In order to seal the open front and rear surfaces of the water tank body, the water tank body has the same cross-section and its outer peripheral surface is integrally formed with a coupling means corresponding to the water tank body. The artificial wetlands for natural purification of sewage, lake water and river water, characterized in that it comprises a front and rear face plate formed with a sludge discharge port is discharged. The method of claim 9 or 10 The tank includes a left and right support block formed integrally with a side wall and an inclined portion having a predetermined height so as to support the side surface of the tank body, and a front and rear support block formed with the inlet or outlet of the stream water and a sludge discharge port installed therein. Artificial wetlands for natural purification of sewage, lake water and river water, characterized in that supported by a support block consisting of. The method of claim 9 Laying a predetermined rail on both sides of the tank and installing a pulley that can automate or facilitate tasks such as installation and replacement of planting boxes, installation and replacement of microbial contact layers, planting and harvesting aquatic plants, etc. on the rails. Artificial wetland for natural purification of sewage, lake water and river water characterized by. The method of claim 9, The plastic house is installed on the water tank, and a predetermined heat insulation layer is formed between the support block and the plastic structure, and a porous or circulation pipe for supplying hot water heated by solar heat is installed inside or at the bottom of the plastic structure. Artificial wetland for natural purification of sewage, lake water and river water, characterized in that the purified plant can grow.