KR100561718B1 - Rooftop planting device for water treatment and rainwater utilizing device using the same - Google Patents

Abstract

The present invention relates to a water treatment functional rooftop recording device and a rainwater utilization device using the same, comprising: a vegetation layer for planting species of greenery; A soil layer provided at the bottom of the vegetation layer, wherein the soil for removing contaminants and soil as a plant growth base are combined; A filtration mat provided at the bottom of the soil layer to prevent suspended matter and contaminant outflow from the soil and media; A drainage layer provided at the bottom of the filtration mat; A waterproof layer provided at a lower end of the drainage layer to prevent moisture penetration into a building; A sump, which is connected to the drainage layer and is a moving passage of water such as rainwater that has passed through the vegetation layer, the soil layer and the filtration mat; A water treatment facility connected to the sump and for purifying water such as rainwater introduced through the sump; A storage tank connected to the water treatment facility for storing water such as purified rainwater; And a water supply facility connected to the storage tank and configured to collect and supply water stored in the storage tank, including a water treatment functional rooftop recording device. According to the present invention, while building an environmentally friendly rooftop greening surface, water such as rainwater collected from the rooftop greening surface can be recycled.

Rooftop greening, stormwater, recycling

Description

ROOFTOP PLANTING DEVICE FOR WATER TREATMENT AND RAINWATER UTILIZING DEVICE USING THE SAME}

1A is a cross-sectional view of a water treatment functional rooftop recording apparatus according to the present invention.

Fig. 1B is a schematic cross-sectional view of a water treatment functional rooftop recording device and a rainwater utilization device using the same according to the present invention in a building.

Figure 2 is a graph showing the effect of removing heavy metals according to the amount of the bauxite-based minerals in the soil layer in the water treatment functional rooftop greening device and rainwater using device according to the present invention.

Figure 3a is a graph comparing the iron ion concentration in the effluent passing through the water treatment functional rooftop recording apparatus according to the present invention and the iron ion concentration in the effluent passing through the conventional rooftop recording apparatus.

Figure 3b is a graph comparing the total phosphorus concentration in the effluent passing through the water treatment functional rooftop recording apparatus according to the present invention, and the total phosphorus concentration in the effluent passing through the conventional rooftop recording apparatus.

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

1: rooftop recording device with water treatment function 2: water collecting gutter

3: settling tank 4: filtration tank

5: first storage tank 6: disinfection tank

7: 2nd storage tank 8: 1st pump

9: 2nd pump 10: High cost water tank

11: water pipe 101: rooftop

102: waterproof layer 103: drainage layer

104: filtration mat 105: soil layer

106: vegetation layer

The present invention relates to a water treatment functional rooftop recording device and a rainwater utilization device using the same.

The ongoing urban development project in line with industrial development not only damages the ecological environment by reducing green space but also causes microscopic weather changes due to urban heat islands. In addition, an impermeable layer such as asphalt, which is increased instead of the green space, prevents rain from penetrating underground, thereby increasing flood damage of the city during flooding, and also discharging rainwater that has not penetrated. It is causing. Recently, as a way to solve these problems, a technique has been proposed to create a green space by utilizing the rooftop space of the building in the city. For example, Korean Patent Registration Nos. 314544, 332076 and 349557 provide urban air purification and prevention of urban heat island, and increase flooding and prevent flooding due to delayed discharge of effluent. The structure and construction method of a rooftop greening system which can be expected are disclosed. However, creating a greening surface on the roof according to this conventional method causes another problem as follows.

That is, conventional rooftop greening systems have insufficient water treatment functions, and thus, such as rainwater, which is discharged through the rooftop greening system or flows into the ground, nutrients such as nitrogen and phosphorus leaked from soil and fertilizer, etc. Heavy metals derived from dust, suspended solids, organic contaminants and endocrine disruptors may be contained in large quantities. Since such rainwater can act as a nonpoint source of pollution in the city and cause water pollution, it is necessary to develop a rooftop greening system with a water treatment function to prevent such water pollution. In addition, in order to solve the water shortage problem, it is also required to develop a system that can actively use water such as rainwater emitted from the rooftop greening surface.

SUMMARY OF THE INVENTION An object of the present invention is to provide a water treatment functional rooftop recording apparatus for removing contaminants contained in water such as rainwater by forming a greening surface having its own water treatment function on the roof of a building.

Another object of the present invention is to provide a rainwater utilization device for purifying and recycling rainwater collected from a water treatment functional rooftop greening device.

In the present invention, as a result of earnest research in order to solve the above technical problems, by improving the structure of the conventional rooftop recording device and linking the rainwater utilization facilities, not only to create a greenery on the roof, but also to collect rainwater The present invention has been made in view of the fact that it can be purified and recycled.

The present invention, vegetation layer for planting species of greening; A soil layer provided at the bottom of the vegetation layer, wherein the soil for removing contaminants and soil as a plant growth base are combined; A filtration mat provided at the bottom of the soil layer to prevent suspended matter and contaminant outflow from the soil and media; A drainage layer provided at the bottom of the filtration mat; And a waterproof layer provided at a lower end of the drainage layer to prevent water penetration into a building.

In addition, the present invention, vegetation layer for planting species of greening; A soil layer provided at the bottom of the vegetation layer, wherein the soil for removing contaminants and soil as a plant growth base are combined; A filtration mat provided at the bottom of the soil layer to prevent suspended matter and contaminant outflow from the soil and media; A drainage layer provided at the bottom of the filtration mat; A waterproof layer provided at a lower end of the drainage layer to prevent moisture penetration into a building; A sump, which is connected to the drainage layer and is a moving passage of water such as rainwater that has passed through the vegetation layer, the soil layer and the filtration mat; A water treatment facility connected to the sump and for purifying water such as rainwater introduced through the sump; A storage tank connected to the water treatment facility for storing water such as purified rainwater; And a water supply facility connected to the storage tank and configured to collect and supply water stored in the storage tank, wherein the water treatment functional rooftop recording device is provided.

The water treatment facility in the rainwater utilization apparatus according to the present invention may include at least one selected from the group consisting of a sedimentation tank, a filtration tank, and a disinfection tank, and the disinfection tank includes a chlorine disinfection facility, a UV disinfection facility, and an ozone disinfection facility. It is preferable to use one comprising at least one facility selected from. The rainwater utilization device according to the present invention is preferably installed in a size sufficient to accommodate water such as rainwater collected from the water treatment functional rooftop recording device according to the present invention, and in order to prepare for overflowing, an infiltration facility is added to the storage tank. It is preferable to connect them.

Hereinafter, a water treatment functional rooftop recording apparatus and a rainwater utilization apparatus using the same according to the present invention will be described in detail with reference to the drawings and experimental examples showing one embodiment of implementing the present invention. The following drawings and descriptions are not intended to limit the invention, and the invention is capable of various substitutions, modifications, and changes without departing from the spirit of the invention based on the matters set forth in the claims. It will be apparent to those of ordinary skill in the art.

The present invention, as shown in Figs. 1A and 1B, provides a water treatment functional rooftop recording apparatus and a rainwater utilization apparatus associated with it. First, in order to construct a water treatment functional rooftop recording apparatus as shown in Fig. 1A, a waterproof layer 102 was laid on the rooftop surface 101, and a drainage layer 103 was placed thereon. In the water treatment functional rooftop recording apparatus according to the present invention, the waterproof layer 102 may be formed by using a synthetic polymer waterproof sheet having a waterproof function, and the drainage layer 103 may be inexpensive and cheaper than crushed stone or crushed stone. A commercially available drainage plate material capable of reducing damage to the 102 may be formed. In addition, the drainage layer 103 may be designed by additionally connecting a roof drain or the like in order to minimize the defect due to the horizontal drainage failure. A filter mat 104 may be placed on the drainage layer 103, which is used to suppress the outflow of fine grains, suspended solids, phosphorus, etc. from the soil layer 105 and the vegetation layer 106 which are sequentially formed thereon. It also acts as a strainer for pollutants.

In the water treatment functional rooftop greening apparatus according to the present invention, the soil layer 105 in which the soil for removing contaminants and the soil as a plant growth base is blended has good drainage as soil and needs to supply fertilizer from the outside. It is preferable to use artificial lightweight soil, which may be selected from at least one selected from the group consisting of cera-soil, perlite and sludge recycle aggregate for planting. In addition, it is preferable to use a medium for removing heavy metals and / or a medium for removing trace amounts of organic contaminants, nitrogen and phosphorus compounds as a medium to be mixed in the soil layer 105 to remove contaminants. Here, as a medium for removing the heavy metals, those made of minerals of bauxite can be used. Such minerals of bauxite are hematite (Fe ₂ O ₃ )) and boehmite (γ-). AlOOH), gibbsite ((Al (OH) ₃ )), sodalite, (Na ₄ Al ₃ Si ₃ O ₁₂ Cl), quartz (SiO ₂ )) and cancrinite , (Na, Ca, K) ₈ (Al, Si) ₁₂ O ₂₄ (SO ₄ , CO ₃ ) .3H ₂ O). Such bauxite-based minerals are ion-exchanged, precipitated, isoform-substituted and catalyzed by heavy metals contained in water such as rainwater according to the general reaction mechanism with heavy metals to remove the heavy metals.

In addition, as a medium for removing the trace organic contaminants, nitrogen and phosphorus compounds, it is preferable to use a filter of lignocellulosic system, which is a wood residue and an extract, and a divalent aluminum functional group or nano aluminum aluminum by chemical pretreatment. More preferably, a lignocellulosic filter in which particles are introduced to the surface of the filter is used. The lignocellulosic filter having improved reactivity by the chemical pretreatment removes and reacts with organic contaminants, nitrogen and phosphorus compounds by ion exchange, coordination, two-stage filtration and precipitation collection. The above-mentioned media can adjust the composition of the media or the blending amount with the soil layer 105 according to the type and amount of contaminants to be removed, and thus the soil layer 105 in which the soil and the media are blended has structural stability of the building. In consideration of this, it is preferable to form the soil core at 10 to 20 cm.

In the vegetation layer 106 formed on the top of the water treatment functional rooftop recording device according to the present invention, it is preferable to plant the appropriate greenery species in consideration of the climatic environment, flowering characteristics, etc. according to the location of the building. It is desirable to plant at least one species selected from the group consisting of grass, herbaceous and woody plants that are short in height, rooty in nature, and not very active in growth.

FIG. 1B is a schematic cross-sectional view of a water treatment functional rooftop recording apparatus 1 and a rainwater utilization apparatus using the same according to the present invention shown in FIG. 1A applied to a building. The sump 2 connected to the drainage layer 103 in the water treatment functional rooftop recording device 1 according to the present invention has passed through the vegetation layer 106, the soil layer 105, and the filtration mat 104. It becomes an inflow passage for rainwater and the like, and the water introduced therethrough is directly transported to the settling tank 3. Suspended matter, earth and sand contained in the water while remaining in the settling tank 3 is naturally precipitated, and the purified water is then stored in the first storage tank 5 through the filtration tank 4 connected to the settling tank 3. . The filtration tank 4 in the present invention is a biological water treatment facility containing crushed stone and sand as a filter medium, and can additionally perform treatment in accordance with the target water quality according to the specific use for recycling water. The water stored in the first storage tank (5) via the filtration tank 4 is partially withdrawn by the first pump (8) connected to the first storage tank (5) and utilized for applications such as landscaping and watering, It is transferred to the disinfection tank (6) to undergo water disinfection. The disinfection tank 6 is a facility required when recycling water such as rainwater into living water, such as toilet washing water, bath water, and drinking water in an emergency. Therefore, the disinfection tank 6 may be equipped with a chlorine disinfection facility and / or a UV disinfection facility and / or an ozone disinfection facility and the like to be suitable for the purpose of recycling the above-mentioned water. After passing through the disinfection tank (6) is stored in the second storage tank (7), if necessary to pressurized by the second pump (9) and stored in the elevated tank (10), and then through the water supply pipe (11) in a natural flow manner It is supplied to the green rooftop and inside the building.

Water treatment facilities, such as the said precipitation tank 3, the filtration tank 4, and the disinfection tank 6, storage facilities, such as the 1st storage tank 5 and the 2nd storage tank 7, and the 1st pump 8 and the 2nd pump 9 ), The high-priced water tank 10, the water supply facilities such as the water supply pipe 11 can be changed in accordance with the purpose of recycling the water, such as rainwater, there is no limit to the number of arrangement of each facility. In addition, the water treatment facility and the storage facility may be installed in the basement of the building, or may be installed outside the building. In addition, in order to prepare for the monthly overflow, it may be connected to the facility by further installing infiltration facilities such as infiltration barrels and infiltration trenches at a location about 1 to 5 m away from the building.

Experimental Example 1

In the water treatment functional rooftop greening apparatus according to the present invention and the rainwater utilization apparatus associated therewith, an experiment was performed to determine the effect of removing heavy metals according to the amount of bauxite-based minerals in the soil layer. First, the amount of gibbsite to the soil layer is adjusted to 200, 400, 600, 800 and 1000 mg / l to form a water treatment functional rooftop greening apparatus according to the present invention, and iron, copper, which are heavy metal components commonly found in rainwater. After preparing a heavy metal solution having a concentration of 1 mg / l using zinc, the solution was added to the rooftop greening apparatus, respectively. The results are shown graphically in FIG.

As can be seen in Figure 2, as the compounding amount of the gibbsite to the soil layer increased the removal efficiency of iron, copper, zinc all increased, in particular, the removal efficiency of the heavy metals, especially when the compounding amount of the gibbsite is 1000 mg / l Was 84 ~ 99.9%. Therefore, in areas where heavy metals are likely to be contained in rainwater, it is preferable for water treatment to mix a large amount of bauxite-based minerals in the soil layer during the construction of the rooftop greening device.

Experimental Example 2

In the water treatment functional rooftop recording apparatus according to the present invention and the rainwater using device using the same, in order to observe the water quality improvement effect by the water treatment functional rooftop recording apparatus, the conventional rooftop recording apparatus and the water treatment functional rooftop recording apparatus of the present invention. Each model was made. Rainfall flowing out of each rooftop greening device during rainfall was collected over time, and the iron ion concentration and total phosphorus concentration in the effluent were measured. The iron ion concentration in the effluent was measured using an absorber from HACH and an iron analysis reagent (No. 27426-45, manufactured by HACH), and the total phosphorus concentration in the effluent was measured using an absorber and phosphorus analysis reagent (No. 1037-69) from HACH. , Manufactured by HACH Co., Ltd.). The results are shown in FIGS. 3A and 3B.

As can be seen in Figures 3a and 3b, the concentration of iron ions and total phosphorus in the effluent passing through the water treatment functional rooftop greening apparatus of the present invention is higher than the concentration of iron ions and total phosphorus in the effluent passing through the conventional rooftop greening apparatus. Overall, it was two to three times lower. This confirmed the excellent water quality improvement effect of the rooftop recording apparatus incorporating the water treatment function of the present invention.

According to the present invention, by forming a rooftop greening surface that provides effects such as air purification, noise absorption, prevention of urban heat island by reducing radiant heat, and adding a water treatment function to the rooftop greening surface, A rooftop greening device with eco-friendly water treatment is also provided, which can be expected to have a removal effect. In addition, according to the present invention, by linking the water treatment functional rooftop recording device according to the present invention and the rainwater utilization device using the rooftop greening surface as a water collecting surface, the water such as rainwater flowing out from the rooftop greening surface is purified to provide living water. Can be recycled. Since the purified water does not have the risk of polluting the water quality even if it is leaked to the outside, it may be effective to reduce the non-point source in the city.

Claims (17)

Vegetation layer of planting species; A soil layer provided at the bottom of the vegetation layer, wherein the soil for removing contaminants and soil as a plant growth base are combined; A filtration mat provided at the bottom of the soil layer to prevent suspended matter and contaminant outflow from the soil and media; A drainage layer provided at the bottom of the filtration mat; A waterproof layer provided at a lower end of the drainage layer to prevent moisture penetration into a building; A sump, which is connected to the drainage layer and is a moving passage of water such as rainwater that has passed through the vegetation layer, the soil layer and the filtration mat; A water treatment facility connected to the sump and for purifying water such as rainwater introduced through the sump; A storage tank connected to the water treatment facility for storing water such as purified rainwater; And A water supply facility connected to the storage tank and configured to collect and supply water stored in the storage tank; Rainfall utilization apparatus comprising a water treatment functional rooftop recording device comprising a. The method of claim 1, The soil blended into the soil layer is an artificial light weight soil which has good drainage and does not require the supply of fertilizer from the outside. Rainwater utilization device with water treatment type rooftop recording device. The method of claim 1, The media blended in the soil layer is characterized in that the media for removing heavy metals and / or media for removing trace organic contaminants, nitrogen and phosphorus compounds. Rainwater utilization device with water treatment type rooftop recording device. The method of claim 3, The filter medium for removing the heavy metal is characterized in that consisting of minerals of the bauxite system Rainwater utilization device with water treatment type rooftop recording device. The method of claim 4, wherein The bauxite-based minerals are hematite (Fe ₂ O ₃ ), boehmite (γ-AlOOH), gibbsite (Al (OH) ₃ )), sodalite, (Na ₄ Al ₃ Si ₃ O ₁₂ Cl)), quartz, (SiO ₂ )) and cancrinite, (Na, Ca, K) ₈ (Al, Si) ₁₂ O ₂₄ (SO ₄ , CO ₃ ) .3H ₂ O) At least one species selected from the group consisting of Rainwater utilization device with water treatment type rooftop recording device. The method of claim 3, The filter medium for removing the trace organic contaminants, nitrogen and phosphorus compounds, characterized in that consisting of a filter of lignocellulosic system which is a wood residue and extract Rainwater utilization device with water treatment type rooftop recording device. The method of claim 6, The lignocellulosic filter is characterized in that divalent aluminum functional groups or nano aluminum particles are introduced into the surface of the filter by chemical pretreatment. Rainwater utilization device with water treatment type rooftop recording device. The method of claim 1, The soil layer is characterized in that the soil depth is 10 ~ 20㎝ Rainwater utilization device with water treatment type rooftop recording device. The method of claim 1, The water treatment facility is characterized in that it comprises at least one selected from the group consisting of sedimentation tank, filtration tank and disinfection tank Rainwater utilization device with water treatment type rooftop recording device. The method of claim 9, The disinfection tank is characterized in that it comprises at least one device selected from the group consisting of chlorine disinfection equipment, UV disinfection equipment and ozone disinfection equipment Rainwater utilization device with water treatment type rooftop recording device. The method of claim 1, The storage tank is characterized in that it is additionally connected with the infiltration facility for preventing overflow Rainwater utilization device with water treatment type rooftop recording device. Vegetation layer of planting species; A soil layer provided at the bottom of the vegetation layer, the soil as a plant growth base and a filter medium for removing contaminants; A filtration mat provided at the bottom of the soil layer to prevent suspended matter and contaminant outflow from the soil and media; A drainage layer provided at the bottom of the filtration mat; And A waterproof layer provided at a lower end of the drainage layer to prevent moisture penetration into a building; Water treatment functional rooftop recording device comprising a. The method of claim 12, The media blended in the soil layer is characterized in that the media for removing heavy metals and / or media for removing trace organic contaminants, nitrogen and phosphorus compounds. Water treatment rooftop recording device. The method of claim 13, The filter medium for removing the heavy metal is characterized in that consisting of minerals of the bauxite system Water treatment rooftop recording device. The method of claim 14, The bauxite-based minerals are hematite (Fe ₂ O ₃ ), boehmite (γ-AlOOH), gibbsite (Al (OH) ₃ )), sodalite , (Na ₄ Al ₃ Si ₃ O ₁₂ Cl)), quartz, (SiO ₂ )) and cancrinite, (Na, Ca, K) ₈ (Al, Si) ₁₂ O ₂₄ (SO ₄ , CO ₃ ). 3H ₂ O) At least one species selected from the group consisting of Water treatment rooftop recording device. The method of claim 13, The filter medium for removing the trace organic contaminants, nitrogen and phosphorus compounds, characterized in that consisting of a filter of lignocellulosic system which is a wood residue and extract Water treatment rooftop recording device. The method of claim 16, The lignocellulosic filter is characterized in that divalent aluminum functional groups or nano aluminum particles are introduced into the surface of the filter by chemical pretreatment. Water treatment rooftop recording device.

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