KR100919276B1 - An apparatus for purifying of contaminated soil and a method for purifying using the same - Google Patents

Abstract

PURPOSE: An apparatus for purifying polluted soil and a purification method using the same are provided decompose and separate contaminants easily which are compressed on the surface of soil, and to minimizing a purification space. CONSTITUTION: An apparatus for purifying polluted soil includes a frame(100), an injection hopper(110), a first transfer conveyor(120), a mixing casing(180), a selection part(130), a rotation part(140), a second transfer conveyor(150), and a discharge conveyor(160). The injection hopper is installed at a frame. The polluted soil is put into the injection hopper. A first watering part(111) is installed at the injection hopper to spray a nutrient on the polluted soil. The first transfer conveyor comprises a first bearing(121) and a first transfer belt(122). The mixing casing is formed on an adjacent location of the first transfer conveyor. The selection part is formed on an inner space of the mixing casing. The selection part includes a bar(131) on each sector. A plurality of discharge holes(133) are formed between bars. The rotation part is formed on a side of the selection part.

Description

An apparatus for purifying of contaminated soil and a method for purifying using the same}

The present invention can save the transport cost by using a large site and heavy equipment required by the conventional soil purification and cultivation methods to purify and cultivate the contaminated soil, it is required to clean the contaminated soil by the efficient operation of manpower and equipment It relates to a contaminated soil purification apparatus and a purification method using the same that can shorten the period of time.

Once contaminated soil is contaminated, it can adversely affect the surface and ground water quality, so it can cause secondary pollution to the surrounding environment. Therefore, contaminated soil must be cleaned and restored at the site as soon as possible.

Currently, contaminated soils generated in Korea are mainly caused by unauthorized landfill or leakage accidents of liquid waste, and also by underground diffusion of ground deposits that have been neglected during long-term industrial activities. The contaminated soils caused by these factors are caused by various chemical species rather than a single compound, and the representative complex pollution occurs in most industrial activities in the form of oil and heavy metals.

Conventional methods for the purification and cultivation of contaminated soil, which have been used in the prior art, are used to excavate contaminated soil with an excavator, select the soil using a soil screening device, and stack the soil in a yard. Transport them to a site on which a soil cultivation site or a soil cultivation site is installed.

The soil cultivation building is a concrete building, the bottom of which is composed of a cement floor without drainage, or a sloping membrane and drainage inclined to move the leachate generated in the process of spraying nutrients and purified microorganisms to the leachate pipe to the wastewater treatment device. It is designed to prevent water pollution by sending.

In addition, the upper part of the soil cultivation site or soil cultivation building is covered with a roof to prevent organic solvents from being released into the atmosphere and prevent the inflow of rain from polluted soil. have.

In addition, by transporting the contaminated soil accumulated in the yard by truck, the soil cultivation site or the soil cultivation building is loaded into the soil, and then the soil is leveled with an excavator, and the soil is dried to an appropriate level. After spraying the oxidizer, the tractor is mixed regularly to induce aerobic biodegradation to cultivate the contaminated soil, restore the soil within the soil treatment criteria, and then perform the soil purification test.

Subsequently, after confirming whether soil cultivation is repeated, the purified soil is transported to the excavated place by using a truck to the excavated place, and then backfilled to finish the soil cultivation construction.

However, in order to carry out the above-mentioned soil purification and cultivation, a large site is required, and the contaminated soil is moved to a soil cultivation site or a soil cultivation building for purification, and after purification, the selected soil is transported to an excavation site. The process is very complicated and expensive.

In addition, when the soil is picked up on a large site and the soil is dropped on the ground by an excavator, a person sprays the purified microorganisms and nutrients on a large site, or sprays the purified microorganisms, nutrients and oxidants at the same time using a watering device on the large site. Only by regular mixing with a tractor can the biomass decompose and purify the pollutants. However, even if it is regularly mixed using a tractor, it is difficult to form a proper state for decomposition of pollutants, so there is a problem in that it takes a lot of time and cost to completely remove the difficult decomposition.

In order to solve the above problems, Patent No. 10-0830565, which is previously registered as an example of the related art, is well known.

The prior art can clean up the contaminated soil immediately at the site to refill the selected soil, and can reduce the cost required to prepare the soil cultivation site or soil cultivation building, but the equipment is complicated In addition to high facility investment costs, the process for purifying contaminated soil is very complex, and since various contaminants are strongly compressed onto the surface of micro soils, they are adsorbed on micro-contaminated soils with small particle diameters. Difficulty in the decomposition / separation / separation of the material has a problem that can not effectively clean the soil.

The present invention has been made to solve the above-mentioned problems of the prior art, a pollution that can be easily decomposed / detached / separated from the contaminants compressed on the surface of the soil while minimizing the purification place for the purification of contaminated soil It is an object of the present invention to provide a soil purification apparatus and a purification method using the same.

Means of the present invention for achieving the above object is a frame, an input hopper is installed in the frame, the first hopper is installed, the first sprayer for spraying nutrients to the contaminated soil, and the first soil, A first conveying conveyor which is composed of a first conveying belt mounted to the first bearing and is mounted below the feeding hopper and transfers the contaminated soil dropped from the feeding hopper in the advancing direction, and at a position adjacent to the first conveying conveyor; In addition, the inner space is formed, the discharge guide portion of the tapered form is formed in the lower portion, the mixing casing is formed to be inclined downward in the longitudinal direction of the frame, and accommodated in the inner space of the mixing casing, Bars are formed every time, and a plurality of discharge holes are formed therebetween, and the discharge holes have different sizes according to a predetermined section. And a sorting part formed to have an inclination inclined downward in the longitudinal direction of the frame, a rotating part formed at one side of the sorting part, a second bearing, and a second transfer belt mounted on the second bearing and rotating. A second conveying conveyor installed at a lower side of the mixing casing and transferring the sorted soil dropped from the discharge induction part in a traveling direction, and a discharge conveyor disposed at one side of the second conveying conveyor to discharge the sorted soil to the outside; Characterized in that configured to include.

Another means of the present invention for achieving the above object is, by injecting the contaminated soil distributed in the yard to the injection hopper by spraying and mixing the nutrients of the purified microorganism and the water spraying part, and the contaminated soil mixed with the nutrients Transferring to the sorting unit through a first conveying conveyor; dispersing the contaminated soil by the rotational force as the sorting unit rotates, and dropping through discharge holes formed in each section by particle size; and in the sorting unit The selected soil is transported to the discharge conveyor through the second transport conveyor characterized in that it comprises a step of backfilling the yard.

The contaminated soil purification apparatus and the purification method using the same according to the present invention can be easily decomposed / detached / separated from the contaminants that are immediately compressed on the surface of the contaminated soil to clean the contaminated soil, The cost of transporting the large site and heavy equipment required for purification can be saved.

In addition, the screening unit applied to the present invention can maximize the purification efficiency of the contaminated soil by being able to evenly contact the purified microorganisms and nutrients to the contaminated soil while continuously rotating.

1 is a side view showing the overall configuration of the contaminated soil purification apparatus according to the present invention.

Figure 2 is a rear view of the contaminated soil purification apparatus according to the present invention.

Figure 3 is a side view of the sorting portion applied to the soil purification apparatus according to the present invention.

Figure 4 is a view showing a first clearance prevention portion applied to the soil cleaning device according to the present invention.

Figure 5 is a view showing a second clearance prevention portion applied to the soil purification apparatus according to the present invention.

** Explanation of Significant Symbols for Drawings **

100: frame 110: input hopper

111: first watering unit 120: first conveying conveyor

121: first bearing 122: first transfer belt

123: the first play prevention part 130: the sorting part

131 bar 133: discharge hole

134: second water spray portion 140: the rotating portion

150: second conveying conveyor 151: second bearing

152: second transfer belt 153: second clearance prevention part

160 discharge conveyor 170 residue removal means

171 vertical support portion 172 residue removal portion

180: mixed casing 181: discharge guide portion

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be more apparent.

1 is a side view showing the overall configuration of the contaminated soil purification apparatus according to the present invention, Figure 2 is a rear view of the contaminated soil purification apparatus according to the present invention, Figure 3 is a selection unit applied to the contaminated soil purification apparatus according to the present invention It is a side view, FIG. 4 is a figure which shows the 1st clearance prevention part applied to the contaminated soil purification apparatus which concerns on this invention, FIG. 5 is a figure which shows the 2nd clearance prevention part applied to the pollution soil purification apparatus which concerns on this invention.

Pollutant soil purification apparatus according to the present invention is the frame 100, the input hopper 110, the first conveying conveyor 120, the mixing casing 180, the sorting unit 130, the rotating unit 140 and , The second transfer conveyor 150 and the discharge conveyor 160 is configured.

First, the frame 100 has a constant width and thickness, and is a place where members to be described later are installed.

The input hopper 110 is installed in the frame 100, the contaminated soil is introduced and the first watering unit 111 for spraying nutrients to the introduced contaminated soil is installed on one surface.

The first conveying conveyor 120 is composed of a first bearing 121, the first conveying belt 122 is mounted on the first bearing 121 to rotate, and is mounted on the lower side of the input hopper 110 The contaminated soil dropped from the input hopper 110 is transferred to the sorting unit 130.

The mixing casing 180 is formed at a position close to the first conveying conveyor 120, and an inner space is formed, and the coupling casing is formed to be inclined downward by a predetermined angle in the longitudinal direction of the frame 100 by welding, bolts, or the like. 100 is installed.

In addition, the tapered discharge induction portion 181 is formed in the lower portion of the mixing casing 180 extends in the transverse direction of the mixing casing 180 so that the soil falling from the sorting unit 130 to be described later smoothly the second transfer To be dropped onto the conveyor 150.

In addition, in consideration of the fact that a smooth purification operation cannot be performed by the soil residue that is not discharged through the discharge hole 133, the residue removing means 170 may be further installed at a position close to the sorting unit 130. In this case, the upper portion of the mixing casing 180 is preferably opened so that the discharge hole 133 of the sorting unit 130 is exposed to the outside, and the residue removing unit 170 is a vertical support unit ( 171 and the residue removing unit 172.

The vertical support 171 is spaced apart at regular intervals on both sides of the upper side of the mixing casing 180, the bottom thereof is installed on the frame 100 through a bolt or welding.

The residue removing unit 172 extends in an upper horizontal direction of the vertical support unit 171, and is located at a portion adjacent to the discharge hole 133 formed in the sorting unit 130 so that the sorting unit 130 is formed. Rotating out the residue that was not discharged through the discharge hole 133 to prevent the discharge hole 133 is blocked, the residue removing unit 172 is preferably made in the form of a brush, a comb or the like.

The sorting unit 130 is provided to separate the selected soil by separating the contaminants compressed on the surface of the contaminated soil transferred from the first conveying conveyor 120, the entire cylindrical having the same outer diameter It is made of, and accommodated in the inner space of the mixing casing 180, the bar 131 is formed for each predetermined section, a plurality of discharge holes 133 are formed therebetween, the discharge hole 133 is the soil It is formed in a different size according to a predetermined section so as to select by the particle size, and is formed to have a slope inclined downward in the longitudinal direction of the frame in the same manner as the mixing casing 180.

In addition, the second watering unit 134 is further installed on one side of the sorting unit 130 to spray nutrients to the contaminated soil introduced into the main body.

On the other hand, the rotating unit 140 is installed in the sorting unit 130 to rotate it in one direction, the rotation of the rotating unit 140 is one side is mounted to the drive motor 20 and the other side to the sorting unit 130 It is rotated in one direction by interlocking with the rotation of the drive motor 20 by the rotary belt 30 mounted to rotate the sorting unit 130.

In addition, the sorting unit 130 has a bar 131 is formed at every predetermined section, so that the polluted soil introduced into the sorting unit 130 is inverted to hit the bar 131 due to the rotation of the sorting unit 130. The contaminants that are squeezed on are separated from the soil.

The second conveying conveyor 150 is composed of a second bearing 151, a second conveying belt 152 mounted on the bearing and rotated, and is selected and dropped below the sorting unit 130 To the discharge conveyor 160 side.

The discharge conveyor 160 is installed below one side of the second transfer conveyor 150 to discharge the selected soil to the outside.

In addition, as shown in FIGS. 4 and 5, the first and second clearance prevention parts 123 and 153 are formed inside and outside the first and second transport belts 122 and 152 so that the first and second transport conveyors 120 and 150 are formed. As the first and second transfer belts 122 and 152 rotated as they are rotated, they may rotate in a stable state without being spaced apart.

Reference numeral 10 is a wheel for easily moving the contaminated soil purification apparatus according to the present invention.

The method of purifying contaminated soil using the contaminated soil purification apparatus according to the present invention configured as described above will be described.

First, the contaminated soil distributed in the yard is injected into the input hopper 110 to spray and mix the nutrients of the purified microorganism and the spraying water, and the soil mixed with the clarified microorganism and the nutrient is evenly mixed using the first transport conveyor 120. Transfer to the sorting unit 130.

Subsequently, when the soil is dispersed by rotating the sorting unit 130 in one direction, the dispersed soil is dropped into the second conveying conveyance through the discharge hole 133 and the discharge guide unit 181 formed in each compartment for each particle size. The soil sorted by the sorting unit 130 is transferred to the discharge conveyor 160 through the second transfer conveyor 150, and the discharge conveyor 160 carries out the sorted soil to the outside to backfill the yard. Will be.

In addition, the soil is crushed by falling on the bar 131 in the process of being dispersed in the sorting unit 130, whereby the nutrient sprayed from the second watering unit 134 may be evenly distributed in the soil.

In addition, it is preferable to inspect the state of the soil that has been purified, and to purify the soil that is not suitable for the purification state again through the selection unit 130.

Claims (7)

The frame 100; An input hopper 110 installed in the frame 100 and equipped with a first watering unit 111 for spraying nutrients to the contaminated soil and inputting contaminated soil; It consists of a first bearing 121, the first transfer belt 122 mounted to the first bearing 121 is mounted below the input hopper 110 and proceeds to the contaminated soil dropped from the input hopper 110 A first conveying conveyor 120 for conveying in the direction; In addition to being formed in a position close to the first conveying conveyor 120, the inner space is formed, the discharge induction portion 181 of the tapered shape is formed extending in the lower portion, and inclined downward in the longitudinal direction of the frame 100 A mixing casing 180 formed; In addition to being accommodated in the inner space of the mixing casing 180, the bar 131 is formed for each predetermined section, a plurality of discharge holes 133 are formed therebetween, the discharge hole 133 according to the predetermined section A sorting unit 130 having a different size and formed to have an inclined slope downward in the longitudinal direction of the frame 100; A rotating part 140 formed at one side of the sorting part 130; It is composed of a second bearing 151, the second conveying belt 152 is mounted to the second bearing 151 to rotate is installed on the lower side of the mixing casing 180, the sorted dropped from the discharge guide portion 181 A second transport conveyor 150 for transporting the soil in the advancing direction; And a discharge conveyor (160) installed below one side of the second transfer conveyor (150) for discharging the selected soil to the outside. The method of claim 1, One side of the sorting unit 130, the soil contaminated device, characterized in that the second watering unit 134 is further installed for spraying nutrients to the contaminated soil. The method of claim 1, Residual removal means 170 is further formed on the upper side of the mixing casing 180, the residue removal means 170, A pair of vertical supports 171 spaced apart at regular intervals on both sides of the upper side of the mixing casing 180, and Residual for extending to the upper side of the vertical support portion 171, and is located in the vicinity of the discharge hole 133 formed of the sorting unit 130 to remove the residue that was not discharged through the horizontal discharge hole 133 Polluted soil purification apparatus comprising a water removal unit (172). The method of claim 1, The first and second conveyance belts 122 and 152 of the first and second conveying conveyors (120, 152), the inner and outer portions of the first and second conveyance prevention parts (123, 153) is characterized in that the contamination is further formed Soil purification device. In the method of purifying contaminated soil using the contaminated soil purification apparatus of claim 1, (a) injecting the contaminated soil distributed in the yard into the injection hopper 110 by injecting and purifying the nutrients of the purified microorganism and the water spray; (b) transferring the contaminated soil mixed with the nutrients to the sorting unit 130 through the first transfer conveyor 120; (c) dispersing the contaminated soil by the rotational force by rotating the sorting unit 130 and falling through the discharge hole 133 formed in each section for each particle size; (d) transferring the soil selected by the sorting unit 130 to the discharge conveyor 160 through the second conveying conveyor 150 and backfilling the yard with the soil; The method of claim 5, The soil contaminated soil purification method characterized in that the falling in the process of being dispersed in the bar (131). The method of claim 5 or 6, Contaminated soil purification method characterized in that the nutrient is further injected into the dispersed / crushed contaminated soil in the second watering unit 134 installed in the mixed casing (180).