JP2005087903A - Soil improving system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a soil improving system capable of improving polluted soil efficiently even if the ground of polluted soil is present at a narrow place and a treatment amount of the polluted soil is little. <P>SOLUTION: This soil improving system is equipped with a soil quality improving machine 1 constituted so as to mix received polluted soil with a soil improving material and capable of being installed on a narrow area, at least one surrounding device 2 for receiving the polluted soil mixed with the soil improving material and accelerating the volatilization of a pollutant in the soil and a gas treatment machine 5 for receiving the volatile gas generated in the surrounding device 2 to treat the same. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a soil improvement system for improving a ground containing volatile organic chlorine compounds and volatile organic substances in soil.

  In recent years, the problem of soil contamination due to volatile organic compounds and even specific hazardous substances such as petroleum-based oils has become apparent, and it is socially strongly established to take measures against soil contamination due to concerns about health effects. In response to this request, the Soil Contamination Countermeasures Law was enforced in February 2003. This soil pollution control law obligates land surveys when abolishing facilities that use hazardous substances, and orders surveys even for facilities that are in use that may cause health damage due to soil contamination. be able to. As a result of the survey, the land where contamination is found is listed as a contaminated area in the designated area register, and the landowner must take necessary countermeasures.

  Therefore, in order to improve the contaminated soil, a self-propelled contaminated soil treatment machine configured by installing a hopper, a mixing device, a transport device, etc. on a traveling body having an endless track is proposed (for example, Patent Documents). 1, see FIG.

JP 2003-71426 A

  Occurrence of the above-mentioned contaminated ground is rapidly increasing at service stations that supply gasoline, light oil, kerosene and the like. The site area of this type of service station varies widely, with some having a large site area and some having a small site area. In the latter case, the self-propelled contaminated soil treatment machine has a large structure and may not be able to carry in the contaminated soil treatment at the service station of the small site area. In addition, in the treatment of contaminated soil at a service station with a large site area, when the amount of contaminated soil to be treated is small, the above-mentioned large-structure self-propelled contaminated soil treatment machine is used. Time is completed in a short time. For this reason, since the time and cost required for transportation, installation, withdrawal, etc. of the self-propelled contaminated soil treatment machine with respect to the actual treatment work time and cost become large, there are many treatment requests for contaminated soil. However, the current situation is that the treatment of contaminated soil is not progressing because the request is not answered.

  The present invention has been made based on the above-described matters, and a soil improvement system capable of efficiently improving contaminated soil even in a place where the ground of the contaminated soil is narrow and the amount of contaminated soil is small, and The purpose is to provide a soil improvement machine.

  In order to achieve the above-mentioned object, the first invention is a soil improvement system for modifying contaminated soil. In the soil improvement system, the received contaminated soil and soil improvement material are mixed to improve soil quality that can be installed in a narrow area. And at least one enclosing device that accepts contaminated soil mixed with a soil conditioner and promotes volatilization of the pollutants in the soil, and a gas processor that accepts and processes volatile gas generated in the enclosing device. It is in the soil improvement system characterized by that.

  In addition, the second invention is a soil improvement system for modifying contaminated soil contaminated with volatile organic chlorine compounds and volatile oils. The received contaminated soil and soil improvement material can be mixed and installed in a narrow area. A soil improvement machine, at least one surrounding device that accepts contaminated soil mixed with a soil improvement material, and promotes volatilization of volatile organic chlorine compounds and volatile oil in the soil, and volatile gas generated in the surrounding device And a gas processing machine for receiving and treating the soil.

  Furthermore, the third invention is a soil improvement system for modifying contaminated soil contaminated with a volatile organic chlorine compound and volatile oil, and a transport device that receives and transports the contaminated soil, and the transport device transports the contaminated soil. A soil improvement machine having an improvement material supply device for supplying an improvement material to the contaminated soil, a mixing device installed in the transfer device and mixing the contaminated soil and the soil quality improvement material, and a contamination mixed with the soil quality improvement material It comprises at least one enclosing device that accepts soil and promotes volatilization of volatile organic chlorine compounds and volatile oil in the soil, and a gas processor that accepts and processes volatile gas generated in the enclosing device. It is in the soil improvement system.

  Moreover, 4th invention is a soil improvement system which modifies the contaminated soil contaminated with the volatile organic chlorine compound and the volatile oil, and is installed on the frame and receives the contaminated soil from the hopper. A conveying device, an improvement material supply device that supplies the improved material to the contaminated soil that is installed on the conveying device and is conveyed by the conveying device, and is installed in the conveying device and mixes the contaminated soil and the soil quality improving material. A soil improvement machine having a mixing device, at least one surrounding device that accepts contaminated soil mixed with the soil improvement material, and promotes volatilization of volatile organic chlorine compounds and volatile oil in the soil; A soil improvement system comprising a gas processor for receiving and processing generated volatile gas.

  Furthermore, the fifth invention is a soil improvement system for modifying contaminated soil contaminated with a volatile organic chlorine compound and volatile oil, a gantry, a hopper installed on the gantry and receiving the contaminated soil, and the gantry Installed in the transport device for receiving and transporting contaminated soil from the hopper, an improvement material supply device installed on the transport device and supplying the improved material to the contaminated soil transported by the transport device, and installed in the transport device The soil improvement machine having a mixing device for mixing the contaminated soil and the soil improvement material, and receiving the contaminated soil mixed with the soil improvement material, promotes volatilization of volatile organic chlorine compounds and volatile oil in the soil. A soil improvement system comprising: at least one surrounding device to be received; and a gas processor for receiving and treating volatile gas generated in the surrounding device.

  According to a sixth aspect of the present invention, there is provided a soil improvement system for modifying contaminated soil contaminated with a volatile organic chlorine compound and volatile oil, a gantry, a hopper installed on the gantry and receiving the contaminated soil, and the gantry Installed in the transport device for receiving and transporting contaminated soil from the hopper, an improvement material supply device installed on the transport device and supplying the improved material to the contaminated soil transported by the transport device, and installed in the transport device A soil improvement machine having a mixing device for mixing the contaminated soil and the soil improvement material, a conveyor for receiving and transporting the contaminated soil mixed with the soil improvement material from the soil improvement machine, At least one surrounding device for receiving contaminated soil mixed with a soil conditioner and promoting volatilization of volatile organic chlorine compounds and volatile oil in the soil; In soil improvement system characterized in that a gas treatment apparatus for processing receiving the volatile gases without.

  Furthermore, the seventh invention is a soil improvement system for modifying contaminated soil contaminated with a volatile organic chlorine compound and volatile oil. The frame is installed on the frame and receives the contaminated soil from the hopper. A conveying device, an improvement material supply device that supplies the improved material to the contaminated soil that is installed on the conveying device and is conveyed by the conveying device, and is installed in the conveying device and mixes the contaminated soil and the soil quality improving material. A soil improvement machine characterized by comprising a mixing device.

  An eighth invention is a soil improvement system for modifying contaminated soil contaminated with a volatile organic chlorine compound and volatile oil, a gantry, a hopper installed on the gantry and receiving the contaminated soil, and the gantry Installed in the transport device for receiving and transporting contaminated soil from the hopper, an improvement material supply device installed on the transport device and supplying the improved material to the contaminated soil transported by the transport device, and installed in the transport device And a mixing device for mixing the contaminated soil and the soil improving material.

  According to the soil improvement system of the present invention, even when the ground of the contaminated soil is narrow, even when the amount of the contaminated soil is small, the contaminated soil can be improved efficiently. Efficient processing work can be performed including the cost aspect.

  In addition, according to the soil improvement machine of the present invention, it can be installed in a narrow place, and its transportation is easy, so the cost and time required for transportation, installation and withdrawal for processing work are greatly reduced. it can.

Hereinafter, embodiments of the soil improvement system of the present invention will be described with reference to the drawings.
FIG. 1 is a front view showing an embodiment of the soil improvement system of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a right side view of FIG. 2 is a portable and movable surrounding device installed on the discharge end side of the soil improvement device 1, and this surrounding device 2 is a contamination mixed with the improvement material from the soil improvement device 1. It has the function of accepting soil and promoting the reaction. Reference numeral 3 denotes a dust collector connected to the surrounding device by a connecting pipe 4, and the dust collector 3 collects dust generated in the surrounding device 2. Reference numeral 5 denotes a gas processing machine connected to the dust collector 3 by a connecting pipe 6, and this gas processing machine 5 adsorbs volatile gas flowing through the dust collector 3.

  The surrounding device 2 described above is formed by covering a film body such as a cloth on a lightweight skeleton, and an insertion end into which a discharge end of a discharge conveyor (described later) of the soil conditioner 1 is inserted. A hole is provided.

  The gas processing machine 5 mentioned above is comprised by the charcoal filter etc. which clean a volatile gas using activated carbon etc., for example. The connecting pipes 4 and 6 described above are constituted by, for example, a bellows-type expandable and contractible pipe so that the movement of the dust collector 3 or the gas processing machine 5 can be allowed.

  Next, the detailed structure of the soil improvement machine 1 mentioned above is demonstrated using FIG. 1 thru | or FIG. 1 to 3, reference numeral 10 denotes a main body frame, and the main body frame 10 forms a gantry with a plurality of support posts and a plurality of support members provided on the plurality of support posts.

  Reference numeral 11 denotes a conveyor for conveying the contaminated soil, and the conveyor frame 12 is supported by the main body frame 10 so as to be inclined upward toward the downstream side in the conveying direction (left side in FIG. 1). Reference numerals 13 and 14 denote driven wheels and driving wheels rotatably provided at both ends of the conveyor frame 12, respectively. Reference numeral 15 denotes a conveying belt wound around the driven wheels 13 and the driving wheels 14. Reference numeral 16 denotes a driving device for the transport conveyor 11, and this driving device 16 is connected to the driving wheel 14. By rotating the driving wheel 14, the conveying belt 15 is moved between the driving wheel 14 and the driven wheel 13. It is designed to be circulated. Reference numeral 17 denotes a plurality of support rollers that support the conveyance surface of the conveyance belt 15, and a plurality of these support rollers 17 are arranged below the conveyance surface of the conveyance belt 15 at a predetermined interval.

  Reference numeral 18 denotes a hopper that receives contaminated soil. The hopper 18 is supported by the main body frame 10 via a support member 19 so as to be located at the upstream end (left side in FIG. 1) of the conveyor frame 12 in the direction of sediment transport. Yes. Further, the hopper 18 is formed so as to expand upward, and receives earth and sand from earth and sand supply means such as a hydraulic excavator and is placed on the conveyor belt 15. The width of the lower opening of the hopper 18 is set to be approximately equal to or smaller than the width of the conveyor belt 15.

  Further, a sediment outlet is cut out on the downstream side wall of the hopper 18 so as to face the conveyor belt 15, and the conveyor 11 is configured to remove the sediment in the hopper 18 through the sediment outlet. 18 is conveyed outside. At this time, the amount of earth and sand transported by the transport conveyor 11 is determined by the opening area of the earth and sand cutting exit and the transport speed of the transport belt 15. Accordingly, the earth and sand transport amount can be adjusted by the driving speed of the driving device 16 of the transport conveyor 11.

  20 is an improvement material supply device that supplies the improvement material to the contaminated soil conveyed on the conveyor belt 15, and this improvement material supply device 20 is located downstream of the hopper 18 (right side in FIG. 2). It is supported by the main body frame 10. The improving material added to the contaminated soil is not particularly limited, but, for example, it generates heat due to a hydration reaction with water adsorbed to the contaminated soil, such as quick lime, and the property of volatilizing and separating volatile oil by this exothermic reaction. Those having are preferred.

  The improvement material supply device 20 includes a storage portion 21 of additive material having a substantially square horizontal cross section, a supply portion 22 that leads downward the improvement material in the storage portion 21, and a supply portion 22 that supplies the improvement material in the storage portion 21. And a chute 23 having a substantially quadrangular pyramid shape that serves as a funnel leading to

  The storage unit 21 includes a bellows part 24 provided continuously with the chute 23 and a top plate part 25 that covers the upper part of the bellows part 24. The bellows portion 24 is made of a flexible material that can expand and contract (for example, a polyethylene rubber material), and is reinforced by a plurality of reinforcing rings 26 because an internal pressure from an improved material stored therein acts. At this time, since the internal pressure due to the improving material in the bellows portion 24 becomes higher as it goes downward, the mounting pitch of the reinforcing ring 26 becomes narrower as it goes down as shown in FIG.

  The bellows portion 24 described above is fixed in a state where the bellows portion 24 is extended, for example, during operation, and the internal volume of the storage portion 21 is sufficiently secured, and when transported by a trailer or the like, the bellows portion 24 is provided. By reducing and fixing, it has the function of keeping the transport height within the limits.

  Reference numeral 27 denotes an opening / closing lid provided at an improvement material insertion port substantially at the center of the top plate portion 25. The opening / closing lid 27 opens outward, and in the fully opened state, is opened obliquely upward by a stopper (not shown). It looks like it is still.

  A cutter is provided in the storage unit 21 described above. This cutter is provided so as to project upward so as to face the improvement material inlet.

  When the improvement material supply device 20 is filled with the improvement material, a flexible container (not shown) or the like containing the improvement material is inserted into the improvement material receiving port using a crane or the like. As a result, the flexible container is pressed against the cutter by its own weight, the lower part is cut, and the internal improvement material is filled into the storage part 121.

  The detailed structure of the supply unit 22 will be described with reference to FIG. As shown in FIG. 4, in the present embodiment, the supply unit 22 is configured with a screw feeder, but there is no particular limitation to this, and for example, a rotary feeder or the like may be used. Reference numeral 28 denotes a substantially cylindrical casing of the supply unit 22, and the casing 28 is provided orthogonal to the transfer direction of the improvement material so that the improvement material supply port 29 is positioned on the transport belt 11. Reference numeral 30 denotes a rotating shaft rotatably supported by a bearing in the casing 28, and 31 denotes a screw (auger) provided in a spiral shape on the outer periphery of the rotating shaft 30.

  The pitch of the screw 31 described above is gradually set larger toward the supply port 29 side. This is because the supply of the improving material may be biased to the upstream side, and as a result, a so-called rathole phenomenon may occur, so that the occurrence of this rathole phenomenon is suppressed.

  Reference numeral 32 denotes a driving device connected to the rotary shaft 30, and the driving device 32 rotates the screw 31. Thereby, the screw 31 transfers the improvement material inside the supply part 22 toward the supply port 29, and the improvement material is supplied to the contaminated soil conveyed on the conveyance conveyor 11 by a fixed amount. The drive device 32 has a configuration in which the rotation speed can be controlled, and the supply speed of the improving material can be adjusted by controlling the rotation speed. Further, as shown in FIGS. 1 and 3, the casing 28 is arranged in an upward inclination in a direction orthogonal to the direction of transfer of the improved material (direction perpendicular to the paper surface of FIG. 1). Consideration is made to reduce the height.

  Next, returning to FIGS. 1 to 3, reference numeral 33 denotes a mixing device for crushing and mixing the contaminated soil and the improved material conveyed on the conveyor 11. In this example, an example in which two mixing devices 33 are provided will be described, but the number of units is not limited, and three or more may be provided, or a configuration in which only one is provided is also possible. The detailed structure of the mixing device 33 will be described with reference to FIGS.

  5 is an enlarged front view of the mixing device 33, FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 5, and FIG. 7 is a cross-sectional view taken along the line VII-VII in FIG. 5 to 7, reference numeral 151 denotes a support frame provided on the conveyor frame 12. The support frame 151 includes a base frame 151a provided on the conveyor frame 12, and a plurality of standing frames provided on the base frame 151a. The post 151b includes a bracket 151c provided on the post 151b. A swing member 152 is swingably supported by the support member 151. The upper end of the swing member 152 is connected to the bracket 151c via a support shaft 153.

  Reference numeral 155 denotes a rotating body that mixes the improving material with the contaminated soil. The rotating body 155 is provided on a rotating shaft 156 that is rotatably held at the tip of the swing member 152, and is provided substantially radially with respect to the rotating shaft 156. And a plurality of blades 157. The rotary shaft 156 is provided substantially horizontally above the conveyor belt 15 so as to extend in a direction substantially orthogonal to the conveyor frame 12 (left-right direction in FIG. 6). The rotating shaft 156 includes support portions 156a and 156a at both ends supported by the swing member 152 through bearings 158 and 158, and an intermediate portion 156b interposed between the support portions 156a and 156a. Yes. A flange 156c is provided at each of the opposing ends of the intermediate portion 156b and the support members 156a and 156a, and the intermediate portion 156b and the support members 156a and 156a are connected to each other via, for example, bolts or the like. It is concluded.

  Here, FIG. 9 is a cross-sectional view of the rotator 155 along the IX-IX cross section in FIG. As shown in FIG. 9 and FIG. 8, the blade 157 rotates in the direction opposite to the conveying direction of the conveying belt 106 and is inclined in the opposite direction with respect to the rotating direction of the rotating body 155. . Further, the blades 157 are each curved in the axial direction of the rotating shaft 156, and the curved directions are alternated between the blades 157 adjacent in the circumferential direction. Further, the rotation locus of the rotator 155 is close to the conveyor belt 106. In this way, by rotating the blade 157 in the direction opposite to the sediment transport direction, the contaminated soil and the improved material being transported are partly rebounded, and the contact frequency between the contaminated soil and the improved material and the blade 157 is increased. It comes to secure. At the same time, the blades 157 are curved in the axial direction of the rotating shaft 156 so that a contact area between the contaminated soil and the improving material and the blades 157 is secured.

  Reference numeral 159 denotes a mounting plate attached to the intermediate portion 156b of the rotating shaft 156 at substantially equal intervals in the axial direction. Strictly speaking, each blade 157 is detachably provided on the mounting plate 159 with, for example, a bolt 160 or the like. It has been. And as above-mentioned, since this intermediate part 156b is detachable with respect to the support parts 156a and 156a of the rotating shaft 156, when the blade | wing 157 is replaced | exchanged, it becomes a structure which can be removed with the intermediate shaft 156. ing. The swing member 152 described above has a function of preventing the rotation of the blades 157 from being stopped due to a stone or the like being caught between the blades 157 and the conveyor belt 15.

  Reference numeral 161 denotes a driving device for the mixing device 150, and this driving device 161 is provided on the bracket 151c on one side (the right side in FIG. 6). Reference numerals 162 and 163 denote sprockets provided at the ends of the output shaft 161 a of the driving device 161 and the support portion 156 a of the rotary shaft 156, respectively. Reference numerals 164 denote chains wound around the sprockets 162 and 163. As a result, the driving force of the driving device 161 is transmitted to the rotating body 155, and the rotating body 155 is driven to rotate as shown in FIG. The driving device 161 can adjust the rotation speed.

  Reference numeral 165 denotes a cover that is formed so as to cover the rotator 155 and prevents scattering of earth and sand and additives that are spun up by the rotator 155. The cover 165 is rotatably supported by a rotation shaft 156 (support portion 156 a) and is configured to be able to swing relative to the swing member 152. Further, on the side surface of the cover 165 (the side surface in the direction orthogonal to the paper surface in FIG. 7), a plurality of plates (in this example, two on one side) having grooves 166a formed concentrically with the rotation shaft 156 (support portion 156a). 4 each). Reference numeral 167 denotes a pin provided on the inner side of the swinging member 152. The pin 167 is provided corresponding to the plate 166 and is fitted in the groove 166 a of the plate 166.

  With the above configuration, the soil conditioner 1 supplies the improved material by the improved material supply device 20 while transporting the contaminated soil received in the hopper 18 by the transport conveyor 11, and improves the contaminated soil by the mixing device 34 during transport. Crush and mix with.

Next, operation | movement of one Embodiment of the soil improvement system of this invention mentioned above is demonstrated.
In FIG. 1, for example, contaminated soil accumulated in a predetermined stock location (not shown) is put into the hopper 18 of the soil improvement machine 1 by a separately prepared hydraulic excavator, a transport conveyor, or the like (not shown). The contaminated soil thrown into the hopper 18 is sequentially transported by the transport conveyor 11, and the improving material is added from the improving material supply device 20 during the transport. Further, the contaminated soil to which the improving material is added in this way is mixed with the improving material while being finely crushed (fine-grained) by the mixing device 34. The contaminated soil mixed with this improving material is introduced into the surrounding device 2 from the downstream end (right side in FIG. 1) of the transport conveyor 11 in the transport direction.

  The contaminated soil put into the surrounding device 2 is cured in the surrounding device 2 and heated by the reaction heat between the mixed improving material and the moisture in the contaminated soil. As a result, volatile pollutants contained in the contaminated soil are vaporized and gasified. At this time, a non-volatile floating substance may exist in the volatile gas, but the non-volatile floating substance is collected by the dust collector 3.

  Volatile gas is introduced into the gas processor 5 through the dust collector 3, purified and deodorized by the gas processor 5, and released to the atmosphere.

  When the contaminated soil in the surrounding device 2 becomes full as a result of the above-described processing for improving the contaminated soil, the surrounding device 2 is moved to another place by looking at the improvement of the contaminated soil, that is, the decrease in volatile gas. While installing, the soil improvement machine 1 is moved so that the discharge | release end of the soil improvement machine 1 may face in the surrounding device 2, and the processing operation mentioned above is repeated.

  The soil obtained by volatilizing and improving the volatile substances described above is backfilled in a place excavated as soil for backfilling, for example.

  According to the above-described embodiment of the present invention, the work for improving contaminated soil in a narrow space and the work for improving a small amount of contaminated soil can be improved in a short time. As a result, resale of the land from which the pollution source has been removed can be dealt with immediately, and the land can be used early.

  FIGS. 8 and 9 show other embodiments of the soil improvement system of the present invention. In these figures, the same reference numerals as those shown in FIGS. However, in this embodiment, in order to improve the processing operation of the contaminated soil, the surrounding device 2 and the gas processing device 5 are previously installed on both sides of the soil improvement machine 1, respectively, and the transport conveyor in the soil improvement machine 1 is installed. 11 is placed between the discharge end 11 and the surrounding device 2, and the contaminated soil mixed with the improving material is put into the surrounding device 2 on one side. When the contaminated soil in the surrounding device 2 becomes full, the soil improvement machine 1 is stopped, and the above-described transport conveyor 34 is moved to the surrounding device 2 on the other side and installed. Thereafter, the soil improvement machine 1 is driven, and the contaminated soil mixed with the improvement material is put into the surrounding device 2 on the other side.

  The improved soil introduced into the surrounding device 2 on one side is transported out of the surrounding device 2 so that when the soil in the surrounding device 2 on the other side becomes full, Contaminated soil can be used in the device 2 for its curing.

  In the above-described embodiment of the present invention, the blades 157 in the mixing device 33 are worn as the service period elapses, and can be appropriately replaced. In the present embodiment, since the blade 157 is fastened to the rotating shaft 156 (strictly, the mounting plate 159) by the bolt 160, it can be easily replaced. Further, since the intermediate portion 156b of the rotary shaft 156 to which the blades 157 are attached is also detachable from the support portions 156a and 156a at both ends of the rotary shaft 156, even if the blades 157 are not removed one by one, The entire intermediate shaft 156b can be removed. With such a configuration, high maintainability can be ensured.

  In the embodiment of the present invention described above, the contaminated soil and the improving material are mixed by collision with the blade 157. At this time, in this example, since the tip of each blade 157 is curved in the width direction of the conveyor belt 106, the collision area between the blade 157 and the contaminated soil is secured accordingly. Further, since the rotation speed of the rotating body 155 can be adjusted by the driving speed of the driving device 161, the number of collisions (frequency) between the blade 157 and the contaminated soil is increased by increasing the rotating speed of the rotating body 155. And can reliably mix the contaminated soil with the improved material. Moreover, in securing the number of collisions, it is also achieved by slowing the earth and sand transport speed of the transport conveyor 15. In this example, the rotation direction of the rotator 155 is the opposite direction to the sediment transport direction of the transport conveyor 15, but it may be the same direction as the sediment transport direction of the transport conveyor 15.

  Further, in the present embodiment, since a plurality (two) of mixing devices 150 are arranged on the conveyor 15, compared with the case where only one mixing device 150 is arranged, the contaminated soil and the improving material are reduced. Mixing performance can be improved.

  In this embodiment, in order to obtain the above mixing effect, the blades 157 are formed to be curved in the width direction of the conveyor belt 15, but the essential effect of the present invention is to include a large amount of cohesive soil and soil blocks. Even when contaminated soil is the target for reforming, the soil to be reformed is uniformly finely divided and supplied to the surrounding device 2 to reliably and effectively improve the soil. The shape is not necessarily limited to the above. Moreover, although it was set as the structure which provides the mixing apparatus 33 with two (2 units | sets in this example), as long as said essential effect is acquired, only 1 unit | set may be sufficient. Of course, three or more units may be provided.

  In order to obtain the above-described maintenance effect, the blade 157 and the intermediate portion 156b of the rotating shaft 156 are configured to be detachable. However, in order to obtain an essential effect, it is not necessarily required to be configured to be detachable.

  In the above-described embodiment, the hopper 18 is not provided with a sieving device or the like, but a sieving device or a tilt can be provided according to the properties of the contaminated soil to be modified. In these cases, the same effect is obtained. Further, a chute may be provided in place of the hopper 18, and the hopper and chute can be deleted.

  In the above-described embodiment, the treatment of soil contaminated with volatile oil has been described. However, volatile organic chlorine generated from cleaning liquid for cleaning, cleaning liquid for semiconductor manufacturing processes, oil cleaning liquid for factories, etc. It is also possible to treat soil contaminated with the compound (VOC). Moreover, in this embodiment, although the dust collector 3 is used, it is not necessarily required.

  Furthermore, since the soil improvement machine 1 of the present invention is configured in a small size, it can be transported by a truck or the like, and can be installed in a narrow area.

It is a front view showing one embodiment of the soil improvement system of the present invention. It is a top view of one embodiment of the soil improvement system of the present invention shown in FIG. It is a right view of one embodiment of the soil improvement system of the present invention shown in FIG. It is sectional drawing which expands and shows the supply part which comprises the soil improvement machine used for the soil improvement system of this invention. It is a front view which expands and shows the mixing apparatus which comprises the soil improvement machine used for the soil improvement system of this invention. It is sectional drawing which looked at the mixing apparatus from the VI-VI arrow view of FIG. It is sectional drawing which looked at the mixing apparatus from the VII-VII arrow of FIG. It is a top view which shows other embodiment of the soil improvement system of this invention. It is a right view of other embodiment of the soil improvement system of this invention shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Soil improvement machine 2 Surrounding device 3 Dust collector 5 Gas processing machine 11 Conveyor 18 Hopper 20 Improvement material supply apparatus 33 Mixing apparatus

Claims (8)

  In the soil improvement system that modifies the contaminated soil, the received contaminated soil and soil improvement material are mixed, the soil improvement machine that can be installed in a narrow area, the contaminated soil mixed with the soil improvement material is received, A soil improvement system comprising: at least one surrounding device that promotes volatilization of a pollutant; and a gas processor that receives and processes volatile gas generated in the surrounding device.   In soil improvement system to modify contaminated soil contaminated with volatile organic chlorinated compounds and volatile oil, soil conditioner and soil conditioner that can be installed in confined land by mixing contaminated soil and soil conditioner received At least one enclosing device that accepts contaminated soil mixed with wood and promotes volatilization of volatile organochlorine compounds and volatile oil in the soil; and a gas processor that accepts and processes volatile gas generated in the enclosing device; A soil improvement system characterized by comprising:   In a soil improvement system for modifying contaminated soil contaminated with volatile organic chlorine compounds and volatile oil, a transport device that receives and transports the contaminated soil, and supplies the improved material to the contaminated soil transported by the transport device A soil improvement machine having an improvement material supply device and a mixing device installed in the transport device for mixing the contaminated soil and the soil quality improvement material; and accepting the contaminated soil mixed with the soil quality improvement material; A soil improvement system comprising: at least one surrounding device that promotes volatilization of a volatile organic chlorine compound and volatile oil; and a gas processing machine that receives and processes volatile gas generated in the surrounding device.   In a soil improvement system for modifying contaminated soil contaminated with volatile organic chlorine compounds and volatile oil, a gantry, a conveying device installed on the gantry and receiving and conveying contaminated soil from the hopper, and on the conveying device A soil conditioner having an improvement material supply device that supplies the improved material to the contaminated soil that is installed in the transport device and a mixing device that is installed in the transport device and that mixes the contaminated soil and the soil quality improver And accepting and treating at least one enclosing device that accepts contaminated soil mixed with a soil conditioner and promotes volatilization of volatile organic chlorine compounds and volatile oil in the soil, and volatile gas generated in the enclosing device. A soil improvement system comprising a gas processing machine.   In a soil improvement system for modifying contaminated soil contaminated with volatile organic chlorine compounds and volatile oil, a gantry, a hopper installed on the gantry and receiving the contaminated soil, installed on the gantry, and contaminated from the hopper A transport device that receives and transports soil, an improved material supply device that supplies the improved material to the contaminated soil that is installed on the transport device and transported by the transport device, and is installed in the transport device to improve the contaminated soil and soil quality A soil conditioner having a mixing device for mixing wood, and at least one surrounding device for receiving contaminated soil mixed with the soil quality improving material and promoting volatilization of volatile organic chlorine compounds and volatile oil in the soil; A soil improvement system comprising: a gas processing machine that receives and processes volatile gas generated in the surrounding device.   In a soil improvement system for modifying contaminated soil contaminated with volatile organic chlorine compounds and volatile oil, a gantry, a hopper installed on the gantry and receiving the contaminated soil, installed on the gantry, and contaminated from the hopper A transport device that receives and transports soil, an improved material supply device that supplies the improved material to the contaminated soil that is installed on the transport device and transported by the transport device, and is installed in the transport device to improve the contaminated soil and soil quality A soil conditioner having a mixing device for mixing the material, a transport conveyor for receiving and transporting contaminated soil mixed with the soil conditioner from the soil improver, and a contamination mixed with the soil conditioner from the transport conveyor At least one enclosing device for accepting soil and promoting volatilization of volatile organochlorine compounds and volatile oil in the soil, and volatile gas generated in the enclosing device. Soil improvement system characterized by comprising a gas treatment apparatus for putting the process.   In a soil improvement system for modifying contaminated soil contaminated with volatile organic chlorine compounds and volatile oil, a gantry, a conveying device installed on the gantry and receiving and conveying contaminated soil from the hopper, and on the conveying device The improved material supply device that supplies the improved material to the contaminated soil conveyed by the conveying device, and the mixing device that is installed in the conveying device and mixes the contaminated soil and the soil quality improving material. Characteristic soil improvement machine.   In a soil improvement system for modifying contaminated soil contaminated with volatile organic chlorine compounds and volatile oil, a gantry, a hopper installed on the gantry and receiving the contaminated soil, installed on the gantry, and contaminated from the hopper A transport device that receives and transports soil, an improved material supply device that supplies the improved material to the contaminated soil that is installed on the transport device and transported by the transport device, and is installed in the transport device to improve the contaminated soil and soil quality A soil improvement machine comprising a mixing and crushing device for mixing wood.

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