KR101652970B1 - Salt immersion composition for salt ingress prevention and salt-land planting method using the same - Google Patents

Abstract

More particularly, the present invention relates to a salt-barrier composition for preventing the infiltration of saline, and more particularly, to a method for inhibiting the inflow of sodium ions into sea water, To a salt-barrier composition for preventing penetration of saline using a porous hygroscopic material and an water-absorbing polymer, and a method of salt-freeze planting using the same.
The salt barrier composition according to the present invention comprises 10 to 50 wt% of bottom ash, 5 to 40 wt% of waste activated carbon, 1 to 20 wt% of desulfurized gypsum, 1 to 20 wt% of crushed stone powder, 1 to 20 wt% of zeolite, 0.1 to 10% by weight of sodium sulfate, 0.1 to 10% by weight of yellow clay, 0.1 to 20% by weight of methyl cellulose, 0.1 to 20% by weight of starch, 0.01 to 10% by weight of water reducing agent, 0.01 to 10% by weight of water reducing agent, and 0.1 to 20% by weight of water.
The salting-off method of the present invention is characterized in that the salting surface is formed by excavating the salted soil in a depth of several thousand meters, a small river stream or the direction of the gutter thereof, and the number of thousands of small- Forming a tibia facing their branch line; Forming a salt barrier layer on the excavation surface to form a salt barrier layer; Forming a geotextile layer on top of the salt barrier layer to cover the geotextile; Installing a porous pipe in an upper part of the geotextile layer along an excavation surface and installing a porous pipe in the tibia so as to be connected to the porous pipe; Forming an aggregate filter layer by laying an aggregate on the upper portion of the porous pipe to serve as a filter; Forming a geotextile layer on the aggregate filter layer, laying a salt barrier composition on the aggregate filter layer, laying the land soil in an amount considering the size of the tree to be planted, forming a planting layer in a predetermined amount, Filling the remaining excavation surfaces except for the plant material layer, and planting trees in the plant material layer.

Description

Technical Field [0001] The present invention relates to a salt-barrier composition for preventing salt infiltration and a salt-

More particularly, the present invention relates to a salt-barrier composition for preventing the infiltration of saline, and more particularly, to a method for inhibiting the inflow of sodium ions into sea water, To a salt-barrier composition for preventing penetration of saline using a porous hygroscopic material and an water-absorbing polymer, and a method of salt-freeze planting using the same.

In general, as a general decontamination method for tidal flats, coastal sand dunes, and salt cleansing, it is necessary to repeatedly carry out water trapping and water drainage using fresh water to remove salts present in the saline soil surface and plant rhizosphere, There is a method of accelerating the soaking of the soil and a method of repetitively tilling the soil to make soil decontamination by rain or snow, or a method of using water by installing a large culvert drainage or an ordinary drainage.

This method is accompanied by a burden of input costs for a large area and requires a large amount of water resources. In addition, it is not possible to perform the slope where water can not be applied, and groundwater having a high salt concentration moves to the rhizosphere, which is the growth area of the crop, due to the drought of the soil. As a result, the moisture content of the leaf of the crop is decreased, the chlorophyll decays or disappears, and the photosynthesis activity is lowered due to the degradation of the enzymatic activity, so that it turns reddish brown and dies.

In order to construct a park or a housing complex on a coastal landfill, it is common to cover the soil with a layer of about 1-2 m thick and then plant trees. In such a case, damage to the trees caused by rising salt contained in the mother- And the damage of the salinity which occurs at this time is due to the capillary phenomenon that the water containing the salt from the muddy puddle is moved to the surface of the ground to accumulate a large amount of salinity in the topsoil. Representative obstacles to plants due to increased salt concentration are ionic disorders caused by absorption failure due to lowering of osmotic pressure and accumulation of excessive salt.

Therefore, there is a problem that the vegetation layer is difficult to form because the growth of the capillary containing saline from the ground water is bad and the growth rate of the plants is poor and the rate of the mortality is high, and the soil of the reclaimed landfill has a high sodium content It induces growth disorder due to its toxicity and absorption of nutrients, and disperses clay (2 ㎛ or less in diameter) particles to deteriorate air permeability and permeability, thereby reducing the development of plant roots.

An example of a technique for solving such a problem is disclosed in Document 1 below.

In the following Patent Document 1, the bark agent to be packed in the water-repellent layer was pulverized and ground to a particle size of 1-2 cm, and calcium phosphate, ammonium phosphate, ammonium sulfate, potassium nitrate, calcium cyanide, ammonium nitrate, potassium sulfate, manganese sulfate, A soil remediation agent which is coated with carbonate powder, vermiculite and sulfur powder by water-spraying or immersing in an aqueous solution of 500PPM dissolved at 15-30 ° C, followed by electrodeposition and absorption, followed by semi-drying with a moisture content of about 20-30% .

However, the conventional technique as described above is to prevent salt content from blocking capillary water, to allow plants to retain ions, and to always maintain a small amount of water around the roots, which can improve the soil However, there is a disadvantage in that it is not able to completely perform the salt blocking, which is a fundamental problem.

In addition, the method of planting on the reclaimed land was improved to divide the soil layer (bottom layer) and the soil layer to be packed at the time of planting, and a box-shaped bark specially manufactured (not hydrophilic and not structurally fibrous) And the top layer of the top surface of the soil is filled with a small amount of a soil preparation mixed with an absorbent or the like so as to prevent the rise and inflow of salt to prevent normal growth of the trees. There is a problem that the portion is weak.

Korean Patent Registration No. 10-0096108 (registered on Feb. 24, 1996)

The object of the present invention is to solve the above problems, and it is an object of the present invention to improve the decontamination ability by blocking the rise of salt water by using a porous absorber and an absorbent polymer, It is an object of the present invention to provide a salt barrier composition for preventing the permeation of salt.

It is another object of the present invention to provide a salt-barrier material composition using the above-described porous moisture-absorbing material and water-absorbing polymer, which can effectively block the brine during the planting of salt and prevent soil contamination, A method is provided.

In order to achieve the above object, the salt barrier composition for preventing seepage of salt according to the present invention comprises 10 to 50 wt% of bottom ash, 5 to 40 wt% of waste activated carbon, 1 to 20 wt% of desulfurized gypsum, 1 to 20 wt% 1 to 20 wt% of zeolite, 1 to 20 wt% of ordinary Portland cement, 0.1 to 10 wt% of aluminum potassium sulfate, 0.1 to 10 wt% of sodium sulfate, 0.1 to 10 wt% of loess, 0.1 to 20 wt% of methyl cellulose, To 20 wt%, a foaming agent 0.01 to 10 wt%, a water reducing agent 0.01 to 10 wt%, and water 0.1 to 20 wt%.

The salting-off method of the present invention is characterized in that the salting surface is formed by excavating the salted soil in a depth of several thousand meters, a small river stream or the direction of the gutter thereof, and the number of thousands of small- Forming a tibia facing their branch line; Forming a salt barrier layer on the excavation surface to form a salt barrier layer; Forming a geotextile layer on top of the salt barrier layer to cover the geotextile; Installing a porous pipe in an upper part of the geotextile layer along an excavation surface and installing a porous pipe in the tibia so as to be connected to the porous pipe; Forming an aggregate filter layer by laying an aggregate on the upper portion of the porous pipe to serve as a filter; Forming a geotextile layer on the aggregate filter layer, laying a salt barrier composition on the aggregate filter layer, laying the land soil in an amount considering the size of the tree to be planted, forming a planting layer in a predetermined amount, Filling the remaining excavation surfaces except for the plant material layer, and planting trees in the plant material layer.

As described above, the salt barrier composition for preventing seepage of salt according to the present invention is excellent in decontamination ability by using a porous moisture absorbent and an absorbent polymer, and inhibits the inflow of sodium ions to salt water and prevents loss of long-term potassium ions in the soil There is an effect that the inorganic nutrients necessary for the plant material can be stably supplied.

In addition, the method of salt-freeze-planting using the salt-barrier composition for preventing the saline penetration according to the present invention can prevent the salt floating on the groundwater in the saline to be structurally prevented from being vaporized so that the planted tree can grow normally, It releases the salt of the root layer under the tree root to the outside and distributes the air to the root of the tree, and it has the effect of helping root growth and tree growth. In addition, group woody plants are also easy to use and are not environmentally friendly because they are not a planting method involving decontamination using chemical methods or biological methods.

The salt barrier composition according to the present invention comprises 10 to 50 wt% of bottom ash, 5 to 40 wt% of waste activated carbon, 1 to 20 wt% of desulfurized gypsum, 1 to 20 wt% of crushed stone powder, 1 to 20 wt% of zeolite, 0.1 to 10% by weight of sodium sulfate, 0.1 to 10% by weight of yellow clay, 0.1 to 20% by weight of methyl cellulose, 0.1 to 20% by weight of starch, 0.01 to 10% by weight of water reducing agent, 0.01 to 10% by weight of water reducing agent, and 0.1 to 20% by weight of water.

The salting-off method of the present invention is characterized in that the salting surface is formed by excavating the salted soil in a depth of several thousand meters, a small river stream or the direction of the gutter thereof, and the number of thousands of small- Forming a tibia facing their branch line; Forming a salt barrier layer on the excavation surface to form a salt barrier layer; Forming a geotextile layer on top of the salt barrier layer to cover the geotextile; Installing a porous pipe in an upper part of the geotextile layer along an excavation surface and installing a porous pipe in the tibia so as to be connected to the porous pipe; Forming an aggregate filter layer by laying an aggregate on the upper portion of the porous pipe to serve as a filter; Forming a geotextile layer on the aggregate filter layer, laying a salt barrier composition on the aggregate filter layer, laying the land soil in an amount considering the size of the tree to be planted, forming a planting layer in a predetermined amount, Filling the remaining excavation surfaces except for the plant material layer, and planting trees in the plant material layer.

Further, a screen for preventing the flow of aggregate to the entrance of the porous pipe is installed.

The aggregate used for the aggregate filter layer may include a first aggregate filter layer containing 25 to 45% by weight of aggregate having a particle size of 25 to 40 mm and having a thickness of 20 to 35 cm and an aggregate having a particle size of 60 to 80 mm And a second aggregate filter layer including 55 to 70 wt% of the total aggregate and having a thickness of 30 to 45 cm.

The thickness of the geosynthetic fiber layer formed on the upper part of the salt barrier layer is 0.5 to 1 mm, and the thickness of the geosynthetic fiber layer formed on the upper part of the aggregate filter layer is 0.5 to 1.5 mm.

Hereinafter, the salt barrier composition for preventing penetration of the salt of the present invention and the method for salt-freeze-planting using the salt barrier composition will be described.

The salt barrier composition according to the present invention comprises 10 to 50 wt% of bottom ash, 5 to 40 wt% of waste activated carbon, 1 to 20 wt% of desulfurized gypsum, 1 to 20 wt% of crushed stone powder, 1 to 20 wt% of zeolite, 0.1 to 10% by weight of sodium sulfate, 0.1 to 10% by weight of yellow clay, 0.1 to 20% by weight of methyl cellulose, 0.1 to 20% by weight of starch, 0.01 to 10% by weight, a water reducing agent 0.01 to 10% by weight, and water 0.1 to 20% by weight.

The bottom ash is made of sludge from a thermal power plant and is highly porous and absorbable, and is used for the removal of heavy metal ions, the ability to increase the amount of dissolved oxygen, and the securing of a plant source through the inclusion of various trace elements. When the content of the bottom ash is less than 10% by weight, the adsorption effect may be weak. When the content of the bottom ash is more than 50% by weight, It can flow out to the earth surface through the capillary.

The waste activated carbon has a strong adsorption power, anion emission, and far-infrared radiation characteristics and is known to have functions such as a hygroscopic effect, a deodorizing effect, a gas adsorption, a deodorizing effect, a humidity control, an antibacterial effect, a decaying effect, Particularly, activated carbon is an aggregate of amorphous carbon, which is produced by activating plant material such as sawdust, wood, and coconut shells and coal, which is a mineral system, with water vapor at a high temperature of 900 to 1200 ° C. In the activation process, numerous Å units of micropores of molecular size are formed, so that the functional group of the carbon atom adsorbs the adsorbed material by applying an attractive force to the surrounding liquid or gas. Activated carbon is classified into powder activated carbon and granular activated carbon according to particle size, and is widely used in all industrial fields for decolorization, deodorization, solvent recovery, and water and wastewater treatment.

Particularly, granular activated carbon is used for air purification, water and wastewater treatment, ultrapure water treatment and the like. However, since there is a limit on the adsorption power of activated carbon, the activated carbon used in the water treatment plant must be replaced with new activated carbon after a certain period of time has been used. Activated carbon, once used in a water purification plant, is sometimes recycled and used repeatedly, but most of it is waste.

The waste activated carbon used in the present invention is a special waste which is used for purifying tap water in a water purification plant and is to be replaced with activated carbon mixed with foreign substances such as microorganisms (aquatic bacteria), organic matter, sludge and trace metals contained in water. When waste activated carbon is used, microorganisms contained in the waste activated carbon can take in and decompose organic matter in practical application, and can exhibit purification and purifying action. The waste activated carbon is preferably contained in an amount of 5 to 40% by weight.

The desulfurized gypsum is used to supplement the expansion and decontamination ability of the composition. The desulfurized gypsum is preferably contained in an amount of 1 to 20 wt%, and if the content of the desulfurized gypsum is less than 1 wt%, the decontamination effect may be insufficient. If the amount is more than 20 wt%, further decontamination effects can not be obtained.

The granite is a fine porous structure composed of quartz and feldspathic densely mixed on a green background. It is composed of anhydrous silicic acid and aluminum oxide as main components and is composed of ferric oxide, calcium, magnesium, germanium , And a total of 45 kinds of minerals such as selenium. Therefore, the elvan is characterized by its porous nature, which absorbs, decomposes and removes water vapor, contaminants, organic substances, and germs, and when it is immersed in water, the main components such as trace enzymes, iron, magnesium, calcium, and germanium are eluted, (COD) and biological oxygen demand (BOD) are lowered to prevent the decay of water and to give vitality to living organisms. It is changed into active water to control the year, hardness, water quality and soil quality Since it is composed of multi-elements and porous materials, it acts to remove water impurities and odors and to prevent water from decaying by ionizing and radiating action.

The quartz powder used in the present invention is a powder obtained by pulverizing a quartz stone having a particle size of 200-300 mesh, which plays a role of elution of mineral components, adsorption of toxic substances, high ion exchangeability, neutralization of acids and bases. If the content of the elvan powder is less than 1% by weight, the effect of adsorption, ion exchange, etc. may be insignificant. If the content of the elvan powder is less than 20% by weight, , Good physical properties can be obtained, but the manufacturing cost is not high and it is not economical.

The zeolite is one of crystalline aluminosilicates. It is also called a monument. It is clay minerals, but there are many possible syntheses. Also, those having a crystal structure that does not exist in nature are synthesized. A, Y, and ZSM-5 are well known. There are pores, molecular sieve action, cation exchange ability. Ion exchangers, adsorbents, and catalysts. When the content of the zeolite is less than 1% by weight, the effect of improving the ion exchange performance and the adsorption performance is insufficient. When the content of the zeolite is more than 20% by weight, further improvement in performance The effect disappears.

The ordinary Portland cement is used to improve the binding force of the composition. The ordinary portland cement should be used according to the KS standard. The content of the ordinary Portland cement is preferably 1 to 20% by weight. When the content of the ordinary Portland cement is less than 1% by weight, the binding force may be weak. When the content of the ordinary Portland cement is more than 20% The decontamination effect can not be obtained any further.

The aluminum potassium sulfate has a swelling effect and is used to prevent potassium ion loss in the long term. The amount of the potassium aluminum sulfate is preferably 0.1 to 10 wt%, and when the weight ratio of the aluminum potassium sulfate is increased, the swelling effect is exhibited. If the content of the aluminum potassium sulfate is less than 0.1 wt%, the shrinkage compensation effect may be weak If the content of the potassium aluminum sulfate exceeds 10% by weight, excessive expansion may occur.

The sodium sulfate is used as an insoluble salt to fix sodium present in seawater to inhibit the inflow of sodium ions. The sodium sulfate is preferably contained in an amount of from 0.1 to 10% by weight. When the weight ratio of the sodium sulfate is increased, the swelling effect is exhibited. When the sodium sulfate content is less than 0.1% by weight, the shrinkage compensation effect may be insignificant. If it exceeds 10% by weight, cracks may occur due to excessive expansion.

The loess is used for improving far infrared ray emission, foreign matter adsorption and preservation performance. The loess is preferably contained in an amount of 0.1 to 10% by weight.

The methyl cellulose is used for viscosity control and foreign matter adsorption. The content of the methyl cellulose is preferably 0.1 to 20% by weight, and if the content of the methyl cellulose exceeds 20% by weight, the foreign matter adsorption performance is improved but the workability is decreased. If the content is less than 0.1% by weight, Can be degraded.

The starch is used for viscosity control and adsorption of foreign matter. The starch is preferably contained in an amount of 0.1 to 20% by weight, and if the starch content is more than 20% by weight, the foreign matter adsorption performance is improved but the workability is deteriorated. If the content is less than 0.1% by weight, .

The foaming agent is used for adsorption of foreign matter, increase of dissolved oxygen, etc. by making the foam porous. If the content of the foaming agent exceeds 10% by weight, the foreign matter adsorption performance is improved but the workability is lowered. If the content of the foaming agent is less than 0.01% by weight, the foreign matter adsorption performance is deteriorated .

The water reducing agent is used for increasing the porosity and improving the strength. The water reducing agent is preferably contained in an amount of 0.01 to 10% by weight. If the content of the water reducing agent exceeds 10% by weight, the foreign matter adsorption performance is improved but the workability is lowered. If the content is less than 0.01% by weight, the foreign matter adsorption performance may be deteriorated.

On the other hand, the water is preferably contained in an amount of 0.1 to 20% by weight.

Hereinafter, a salt-free planting method using the salt barrier composition for preventing the saline infiltration is provided.

The salting-off method of the present invention is characterized in that the salting surface is formed by excavating the salted soil in a depth of several thousand meters, a small river stream or the direction of the gutter thereof, and the number of thousands of small- Forming a tibia facing their branch line; Forming a salt barrier layer on the excavation surface to form a salt barrier layer; Forming a geotextile layer on top of the salt barrier layer to cover the geotextile; Installing a porous pipe in an upper part of the geotextile layer along an excavation surface and installing a porous pipe in the tibia so as to be connected to the porous pipe; Forming an aggregate filter layer by laying an aggregate on the upper portion of the porous pipe to serve as a filter; Forming a geotextile layer on the aggregate filter layer, laying a salt barrier composition on the aggregate filter layer, laying the land soil in an amount considering the size of the tree to be planted, forming a planting layer in a predetermined amount, Filling the remaining excavation surfaces excluding the plant material layer, and planting trees on the plant material layer.

In particular, the length of one side of the excavation surface may be about 3 to 4 m, and may be 100 to 220% with respect to the roots of the tree to be planted. The excavated surface should be formed such that its depth is planted with trees and exposed to the topsoil with roots at least 50%.

The perforated pipe has a diameter of 45 to 80 mm and a screen for preventing the inflow of aggregate to the inlet of the perforated pipe is installed.

The aggregate used for the aggregate filter layer may include a first aggregate filter layer containing 25 to 45% by weight of aggregate having a particle size of 25 to 40 mm and having a thickness of 20 to 35 cm and an aggregate having a particle size of 60 to 80 mm, And 55 to 70% by weight of the first aggregate filter layer and 30 to 45 cm of the second aggregate filter layer.

The thickness of the geosynthetic fiber layer formed on the upper part of the salt barrier layer is preferably 0.5 to 1 mm, and the thickness of the geosynthetic fiber layer formed on the upper part of the aggregate filter layer is preferably 0.5 to 1.5 mm.

On the other hand, the land soil in the step of forming the plant material layer is a mixture of loess and masato, but it is also possible to use a combination of the soil and the organic fertilizer such as compost, rice hull and sawdust to help the vegetation.

Hereinafter, embodiments of the salt barrier composition according to the present invention will be more specifically described, but the present invention is not limited to the following embodiments.

≪ Example 1 >

95% by weight of the porous hygroscopic material and 5% by weight of water were stirred in a forced mixer for 2 minutes to prepare a salt barrier composition.

At this time, the porous moisture absorber is composed of 30 wt% of bottom ash, 25 wt% of waste activated carbon, 5 wt% of desulfurization gypsum, 10 wt% of elvan powder, 5 wt% of zeolite, 5 wt% of ordinary portland cement, 2% by weight of loess, 5% by weight of loess, 5% by weight of methyl cellulose, 3% by weight of starch, 1% by weight of a foaming agent and 1% by weight of a water reducing agent. A vegetable foaming agent was used as the foaming agent and a naphthalene-based reducing agent was used as the reducing agent.

≪ Example 2 >

90 wt% of the porous hygroscopic material and 10 wt% of water were stirred in a forced mixer for 2 minutes to prepare a salt barrier composition.

At this time, the porous moisture absorber is composed of 30 wt% of bottom ash, 25 wt% of waste activated carbon, 5 wt% of desulfurization gypsum, 10 wt% of elvan powder, 5 wt% of zeolite, 5 wt% of ordinary portland cement, 2% by weight of loess, 5% by weight of loess, 5% by weight of methyl cellulose, 3% by weight of starch, 1% by weight of a foaming agent and 1% by weight of a water reducing agent. A vegetable foaming agent was used as the foaming agent and a naphthalene-based reducing agent was used as the reducing agent.

≪ Example 3 >

85% by weight of the porous hygroscopic material and 15% by weight of water were stirred in a forced mixer for 2 minutes to prepare a salt barrier composition.

At this time, the porous moisture absorber is composed of 30 wt% of bottom ash, 25 wt% of waste activated carbon, 5 wt% of desulfurization gypsum, 10 wt% of elvan powder, 5 wt% of zeolite, 5 wt% of ordinary portland cement, 2% by weight of loess, 5% by weight of loess, 5% by weight of methyl cellulose, 3% by weight of starch, 1% by weight of a foaming agent and 1% by weight of a water reducing agent. A vegetable foaming agent was used as the foaming agent and a naphthalene-based reducing agent was used as the reducing agent.

Comparative examples which can be compared with the embodiments of the present invention are shown in order to more easily grasp the characteristics of the first to third embodiments.

≪ Comparative Example 1 &

100% by weight of salted soil was used.

The following test examples show experimental results comparing characteristics of the embodiment of the present invention and the characteristics of the first comparative example so that the characteristics of the first to third embodiments of the present invention can be grasped more easily.

 ≪ Test Example 1 >

The seawater infiltration inhibition test of the salt-decomposing soil composition prepared according to Examples 1 to 3 of the present invention and Comparative Example 1 was carried out. A 1000 ml volume U-shaped column was prepared and filled with the salt-barrier composition in the same amount as the salt-free soil used, then 500 ml of seawater was put into one of the tubes and the time to reach the hydraulic equilibrium state was measured, Respectively.

Example 1 Example 2 Example 3 Comparative Example 1 Peak time (hr) 23 19 15 7

As shown in the results of Table 1, it can be seen that compared with Comparative Example 1 filled with saline-free soil, Examples 1 to 3 were more time-consuming to decay, It can be seen that it is effective.

≪ Test Example 2 >

The salt barrier compositions prepared according to Examples 1 to 3 of the present invention and the salt barrier test of Comparative Example 1 were subjected to a salt barrier test.

A rectangular container of 100 cm (width) × 50 cm (length) × 25 cm (height) was filled with a 1% aqueous solution of NaCl at a height of 20 cm and filled with a saline soil 20 cm high in a 20 cm × 20 cm × 55 cm styrofoam container. In the filled container, the saltwater decontamination compositions of Examples 1 to 3 and the salted soil of Comparative Example 1 were installed at a height of 10 cm, and then the salted soil of 20 cm was filled. To calculate the salt-blocking capacity, 10 g of the soil at 10 cm in the upper and lower positions in the central portions of Examples 1 to 3 and Comparative Example 1 was sampled and shaken with 100 ml of distilled water, and the electrical conductivity was measured and expressed as a ratio %). The results are shown in Table 2.

[Equation 1]

(1 - upper layer soil electrical conductivity / lower layer soil electrical conductivity) × 100%

division Example 1 Example 2 Example 3 Comparative Example 1 The upper (dS / m) 0.12 0.15 0.17 2.39 Lower (dS / m) 2.13 2.13 2.13 2.04 Blockability (%) 94.4 93.0 92.0 -17.2

As shown in the results of Table 2, it can be seen that Examples 1 to 3 are superior in salt-blocking ability as compared with Comparative Example 1 in which only the salt-releasing soil is filled.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many obvious changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention should therefore be construed in light of the claims set forth to cover many of such variations.

Claims (5)

10 to 50 wt% of bottom ash, 5 to 40 wt% of waste activated carbon, 1 to 20 wt% of desulfurized gypsum, 1 to 20 wt% of crumb stone powder, 1 to 20 wt% of zeolite, 1 to 20 wt% of ordinary portland cement, 0.1 to 10 wt% of potassium sulfate, 0.1 to 10 wt% of sodium sulfate, 0.1 to 10 wt% of loess, 0.1 to 20 wt% of methyl cellulose, 0.1 to 20 wt% of starch, 0.01 to 10 wt% of foaming agent, 0.01 to 10 wt% And 0.1 to 20% by weight of water, based on the total weight of the composition.
Forming a drilling surface by excavating a saltwater slope so as to be sloped in a direction of a few millimeters, a small river stream, or their branch lines, and forming a tugboat extending from one vertex of the excavation surface to many thousands, small rivers or their branch lines;
Forming a salt barrier layer on the upper surface of the excavation surface to form a salt barrier composition;
Forming a geotextile layer on top of the salt barrier layer to cover the geotextile;
Installing a porous pipe in an upper part of the geotextile layer along an excavation surface and installing a porous pipe in the tibia so as to be connected to the porous pipe;
Forming an aggregate filter layer by laying an aggregate on the upper portion of the porous pipe to serve as a filter;
A soil block material composition as set forth in claim 1 is laid on the top of the aggregate filter layer, and a land soil is laid in an amount considering the size of the tree to be planted. ;
Filling the remaining excavation surfaces excluding the plant material layer, and planting trees in the plant material layer.
[3] The method according to claim 2, wherein a screen for preventing the flow of aggregate is installed at the inlet of the porous pipe.
The method according to claim 2, wherein the aggregate used in the aggregate filter layer comprises a first aggregate filter layer comprising 25 to 45% by weight of aggregate having a particle diameter of 25 to 40 mm, and a second aggregate filter layer having a thickness of 20 to 35 cm, And a second aggregate filter layer formed by incorporating aggregate of 80 mm in a total thickness of 55 to 70% by weight and having a thickness of 30 to 45 cm.
[3] The method according to claim 2, wherein the thickness of the geotextile layer formed on the upper part of the salt barrier layer is 0.5 to 1 mm, and the thickness of the geotextile layer formed on the upper part of the aggregate filter layer is 0.5 to 1.5 mm. Termination planting method.