WO2020090829A1 - Procédé de réalisation de terrain réhabilité - Google Patents

Procédé de réalisation de terrain réhabilité Download PDF

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Publication number
WO2020090829A1
WO2020090829A1 PCT/JP2019/042410 JP2019042410W WO2020090829A1 WO 2020090829 A1 WO2020090829 A1 WO 2020090829A1 JP 2019042410 W JP2019042410 W JP 2019042410W WO 2020090829 A1 WO2020090829 A1 WO 2020090829A1
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Prior art keywords
landfill
slurry
manufacturing apparatus
producing
area
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PCT/JP2019/042410
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English (en)
Japanese (ja)
Inventor
広之 鍵本
勝彦 熊本
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電源開発株式会社
株式会社セイア
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Priority to JP2020553946A priority Critical patent/JP7301066B2/ja
Publication of WO2020090829A1 publication Critical patent/WO2020090829A1/fr

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/18—Reclamation of land from water or marshes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/18—Making embankments, e.g. dikes, dams
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/30—Landfill technologies aiming to mitigate methane emissions

Definitions

  • the present invention relates to a method for producing landfill land.
  • the present application claims priority based on Japanese Patent Application No. 2018-203225 filed in Japan on October 29, 2018, and the content thereof is incorporated herein.
  • coal ash and gypsum powder produced from the coal-fired power plant and the blast furnace slag powder produced from the blast furnace (hereinafter referred to as "coal ash, etc.”), those that have not been effectively used are placed at the final disposal site.
  • the final landfill site includes a landfill landfill site and a water surface landfill site.
  • wet ash landfilling in which coal ash, etc. is humidified and then landfilled with a dump bulldozer
  • slurry landfilling in which coal ash, etc. and water are mixed to form a slurry and then landfilled. Be separated.
  • coal ash that has been humidified by auxiliary equipment at the power plant is transported to the landfill site by dump, etc., and then compacted and compacted by a bulldozer to perform landfill.
  • the conventional wet ash landfill method has a problem that the landfill density of wet ash cannot be sufficiently increased and the landfill disposal site cannot be effectively used.
  • the surface of the landfilled wet ash tends to scatter when it dries, so after the compaction by the bulldozer, as a measure to prevent the scattering of dust, etc., the wet ash should be covered with soil or an intermediate It was necessary to cover the soil.
  • the intermediate cover soil is a cover soil (approximately 50 cm) provided on the surface of each layer with a maximum thickness of 3 m or less when landfilling waste.
  • Patent Document 1 discloses a method for disposing of incineration residue at a landfill landfill site, in which intermediate covering soil can be omitted as a scattering prevention measure.
  • cement and water are added to the incineration residue to knead to form a non-fluid plastic kneaded product, and a layered body is formed by layering the plastic kneaded product. ..
  • cement and water are permeated around the particles of the incineration residue, and a fluid plastic fluid layer is formed.
  • two or more solidifying plates are stacked and the incineration residue is disposed.
  • the present invention has been made in view of the above circumstances, does not require measures to prevent dust and the like from scattering, and is a landfill method for a landfill landfill that enables effective use of the landfill landfill, that is, a landfill site. It is an object to provide a production method.
  • a method for producing a landfill land employs the following configuration.
  • a method for producing a land reclamation by land reclamation of a landfill landfill The landfill area of the landfill disposal site is divided into landfill areas with the required volume, After the coal ash containing at least one of dry ash, wet ash and clinker ash as a raw material is charged into the landfill region, A method for producing a landfill site, comprising drying the slurry in the landfill area.
  • the method for producing landfill land according to [1] wherein the landfill area is divided into the landfill areas by partitions.
  • [3] The method for producing a landfill land according to [2], wherein a bank containing at least a part of the coal ash is used as the partition.
  • [4] The method for producing landfill land according to any one of [1] to [3], wherein the slurry has a water content of coal ash of 35 to 40%.
  • the landfill area is divided into one or more landfill areas, and the one landfill area is charged with the slurry until the volume of the one landfill area is filled, and then the other landfill area is filled with the slurry.
  • [6] The method for producing a landfill site according to any one of [1] to [5], wherein the landfill region has a rectangular shape.
  • a transfer-type slurry manufacturing apparatus is installed in a landfill area of a landfill disposal site or a land adjacent to the landfill area, and the transfer-type slurry manufacturing apparatus is operated to generate the slurry. [1] to The method for producing a landfill site according to any one of [9]. [11] After the loading of the slurry from the transfer-type slurry manufacturing apparatus to the landfill region within a range in which the slurry can be transported is completed, the operation of the transfer-type slurry manufacturing apparatus is stopped to set the transfer-type slurry manufacturing apparatus. While dividing into two or more aggregates, The method for producing a landfill site according to [10], wherein the transfer-type slurry manufacturing apparatus is transferred to a new installation location.
  • the present invention is configured such that a slurry generated from coal ash containing at least one of dry ash, wet ash and clinker ash as a raw material is put into a landfill region having a required volume, and then the slurry in the landfill region is dried. Therefore, landfill can be performed with high density. Therefore, according to the method for producing landfill land of the present invention, it is possible to effectively utilize the landfill landfill. Further, since the surface of the slurry after drying is solidified and dust is not generated, it is not necessary to take measures to prevent scattering of dust and the like.
  • landfill land In the method for producing landfill land according to the present invention, the method of slurry landfill conventionally used for landfill at a surface landfill is newly applied to landfill landfill.
  • the “land reclamation land” means a land having at least one layer of landfilled with a coal ash slurry in a land portion. It is also applied to the land area exposed after landfill at the landfill site.
  • FIG. 1 is a plan view schematically showing the configuration of a landfill facility 70 applicable to the method for producing a landfill site according to this embodiment.
  • the landfill facility 70 is a slurry pump connected to a slurry supply source (hereinafter, sometimes referred to as “slurry manufacturing apparatus”) 1 and a pipe L1 for leading out coal ash slurry of the slurry manufacturing apparatus 1. 14, a transport pipe L2 extending from the slurry pump 14 to the landfill point, and a concrete pump vehicle 80 to which the tip of the transport pipe L2 is connected are configured generally.
  • the landfill facility 70 is a facility for supplying slurry coal ash or the like (coal ash slurry) to any landfill point of the landfill landfill 60.
  • a slurry supply source (slurry manufacturing apparatus) 1 uses coal ash containing at least one of dry ash, wet ash, and clinker ash as a raw material, and is used for landfill of the landfill landfill 60, that is, coal used for production of landfill landfill. This is an apparatus for producing ash slurry.
  • Coal ash used as a raw material is generally classified into fly ash and clinker ash.
  • fly ash means, among coal ash discharged from a coal-fired power plant, a mechanical dust collector such as an electric dust collector or a cyclone installed in a flue, a bag filter (hereinafter, simply (Referred to as "dust collector”).
  • dust collector a bag filter
  • Clinker ash is a coal ash discharged from a coal-fired power plant that adheres to and discharges from the bottom or wall of the furnace, and is in the form of sand or gravel.
  • dry ash refers to the above-mentioned fly ash, which is discharged from the dust collector and is in a state of not absorbing moisture.
  • Wet ash means coal ash (fly ash) moistened with dry ash for transportation by a gut ship (a ship without a closed cargo hold) or a dump truck, or fly ash that has been piled up in contact with rainwater. It shows the coal ash (fly ash) that has become wet and moist.
  • Wet ash is usually in a state of having a water content of about 15 to 30% by mass.
  • the installation location of the slurry supply source 1 is not particularly limited.
  • the slurry supply source 1 may be provided at any point in the landfill landfill 60, or may be provided at any point on the land 61 adjacent to the landfill landfill 60.
  • the installation mode of the slurry supply source 1 is not particularly limited.
  • the slurry supply source 1 may be a permanent one or a temporary one. Above all, it is preferable that the slurry supply source 1 applied to the present embodiment is in a transferable installation mode.
  • the configuration of the transfer-type slurry manufacturing apparatus suitable for this embodiment will be described later.
  • the slurry supply source 1 has a pipe L1 for deriving the generated coal ash slurry, as described later.
  • the pipe L1 for leading out the coal ash slurry is connected to a slurry pump (slurry pumping device) 14.
  • the slurry pump 14 has a discharge pressure required to push out the coal ash slurry from the outlet of the slurry supply source 1 to the discharge portion of the slurry.
  • a general hydraulic piston double pump, an amphibious sand pump, or the like can be used as the slurry pump 14.
  • the transportation pipe (slurry transportation pipe) L2 transfers the coal ash slurry pressure-fed from the slurry supply source 1 to the concrete pump truck 80 arranged at an arbitrary landfill point of the landfill disposal site 60. That is, the transport pipe L2 is a pipe provided between the slurry pump 14 and the concrete pump truck 80. The base end of the transport pipe L2 is connected to the slurry pump 14. The tip of the transport pipe L2 is connected to the hopper of the concrete pump truck 80 as described later. As a result, the coal ash slurry produced by the slurry supply source 1 and pumped by the slurry pump 14 can be supplied to any landfill point from the tip of the flexible hose connected to the concrete pump truck 80. As will be described later, in this embodiment, the tip of the flexible hose serves as a slurry discharge portion.
  • the length R of the transport pipe L2 is not particularly limited, but can be 50 to 500 m, and more preferably 100 to 300 m.
  • the transportation pipe L2 may be configured by preparing a plurality of pipes having a required length and connecting them. With such a configuration, by increasing or decreasing the number of connected pipes, the transportation pipe L2 can be easily extended to the landfill site of the landfill disposal site 60 and installed.
  • the cross-sectional size of the transport pipe L2 is determined in consideration of the pressure loss of the pipe determined by the slurry supply amount, the length of the transport pipe L2, etc., but is generally about 150 A (pipe outer diameter 150 mm).
  • a steel pipe, a flexible resin pipe, or a pipe having a flexible structure such as a corrugated pipe can be used. If a flexible material or structure is adopted, the transport pipe L2 can be easily moved.
  • FIG. 2 is a perspective view showing the configuration of the slurry manufacturing apparatus 1 applicable to the method for producing landfill land according to the present embodiment.
  • FIG. 3 is a side view showing the configuration of the slurry manufacturing apparatus 1 applicable to the method for producing landfill land according to the present embodiment.
  • the slurry manufacturing apparatus 1 applicable to the method for producing landfill land according to the present embodiment has, as main equipment, a supporting base 2, a supporting frame 3, and a high-speed kneading mixer (stirring device). 4, the belt conveyor (raw material transport equipment) 5, the material receiving hopper (raw material feeding equipment) 6, the slurry hopper 7, and the stairs 8 (8A, 8B) are provided as optional equipment.
  • the main equipment described above is mounted on the support base 2.
  • the support base 2 is a component of the slurry manufacturing apparatus 1 (support frame 3, high-speed kneading mixer 4, belt conveyor 5, material receiving hopper 6, slurry hopper 7, and stairs 8) directly or through the support frame 3. It is a foundation provided for indirect support. Specifically, as the support base 2, as shown in FIG. 2, an iron plate laid on the ground can be used.
  • the slurry manufacturing apparatus 1 of this embodiment uses the support base 2 and has the above-described main equipment mounted on the support base 2. Therefore, the slurry manufacturing apparatus 1 can be installed even in a hard and stable ground.
  • the size of the support base 2 is not particularly limited, and can be appropriately selected according to the size of the slurry manufacturing apparatus 1.
  • the width can be about 6.0 to 7.5 m and the length can be about 15.0 to 17.1 m.
  • the size of the support base 2 is set to width: 6.0 m and length: 15.0 m.
  • the thickness of the support base 2 can be appropriately selected depending on the total amount of the constituent members of the slurry manufacturing apparatus 1 without causing warpage or deformation. Specifically, for example, it can be about 2.2 to 2.5 cm.
  • the support base 2 is composed of two support base members (laying iron plates) 2A and 2B from the viewpoint of ease of transportation when disassembling and relocating the slurry manufacturing apparatus 1. ..
  • the support base members 2A and 2B may be independent members, or the members may be connected (fastened) so that they can be freely fixed or released.
  • the number of the supporting base members 2A and 2B is preferably two, from the viewpoint of mounting the entire main equipment, the viewpoint of loading on a vehicle such as transportation, and the viewpoint of ensuring the maximum ground contact pressure, and may be one.
  • the supporting base members 2A and 2B may be formed by welding a plurality of laid iron plates from the viewpoint of loading on a vehicle such as transportation.
  • the size of the iron plate per sheet can be determined according to the size of the support base 2 (support base members 2A, 2B), but from the viewpoint of loading on a vehicle such as transportation, the length is 10 m or less. Preferably.
  • the support base members 2A and 2B can be installed by re-welding after transporting after separating the welding point. Since the slurry manufacturing apparatus 1 applied to this embodiment is lightweight, it is not necessary to use a fixed foundation such as a pile or a concrete plate. Therefore, it is easy to carry when dismantling and relocating the slurry manufacturing apparatus 1.
  • a plurality of mechanical level adjusters 9 are provided on the support base 2.
  • the support base 2 and the support frame 3 are fixed in a state of being connected via a mechanical level adjuster 9.
  • the mechanical level adjuster 9 includes a level adjusting base plate 9A made of H-shaped steel and an adjusting bolt 9B.
  • a level adjusting base plate 9A made of H-shaped steel
  • an adjusting bolt 9B By providing the mechanical level adjuster 9, it is possible to prevent positional displacement when the support frame 3 is connected to the support base 2. Further, the level of mechanical equipment can be easily adjusted in mm by the adjusting bolt 9B.
  • the support base 2 and the support frame 3 are not completely fixed by welding or the like, but can be freely fixed or released by fastening with bolts or the like.
  • the support frame 3 is provided for supporting (fixing) the constituent members (for example, the high-speed kneading mixer 3) of the slurry manufacturing apparatus 1 at a predetermined position (height). It is a frame.
  • the support frame 3 for example, H-section steel can be used.
  • the support frame 3 is composed of a plurality of support frame portions 3A to 3D from the viewpoint of ease of transportation when disassembling and relocating the slurry manufacturing apparatus 1. Further, the configuration of each of the support frame portions 3A to 3D is not particularly limited, and can be appropriately selected according to the required shape, strength and the like.
  • the supporting frame portions 3A to 3D are made of H-shaped steel and have a basic structure in which four columns are arranged in a vertical direction to form pillars and four columns are hung on the pillars in a parallel direction to form a girder. .. If necessary, a brace for slanting the H-section steel is provided between the column and the girder.
  • the support frame portions 3A to 3D may be independent members, or the support frame portions may be connected (fastened) so that they can be fixed and released from each other.
  • the method of connecting the support frame portions to each other is not particularly limited, and for example, a method of fixing the H-shaped steels with bolts can be used.
  • the support frame 3 is provided with a plurality of work floors (scaffolds) 10 (three places in the present embodiment). Furthermore, by detachably hanging the stairs 8 (8A, 8B) between the work floor 10 and the support base 2, the worker can be placed on the work floor 10 provided at a position higher than the ground. can go. As a result, it is possible to improve workability such as checking the driving status.
  • the work floor 10 is preferably provided with a safety fence 11.
  • the high-speed kneading mixer 4 is a stirring device for kneading any one of dry ash, wet ash and clinker ash, or coal ash in which two or more are combined, and water to generate a slurry.
  • a vertical mixer such as an HF mixer (manufactured by Daiheiyo Kiko Co., Ltd.) can be used.
  • the high-speed kneading mixer 4 is not limited to the vertical mixer, and may be a horizontal mixer or a mixer in which the rotation axis is inclined so as to be between the vertical direction and the horizontal direction.
  • the high-speed kneading mixer 4 may have a function of adjusting the mixing ratio of coal ash and water within an appropriate range.
  • the capacity of the high-speed kneading mixer 4 is not particularly limited, and can be appropriately selected depending on the amount of slurry produced and the like. Specifically, for example, it can be about 0.5 to 2.0 m 3 .
  • the high-speed kneading mixer 4 is provided at a position relatively above the ground because a space for installing the slurry hopper 7 is provided below the high-speed kneading mixer 4. Specifically, the high-speed kneading mixer 4 is supported by the support frame portion 3B so that the input side of coal ash as a raw material is on the upper side and the discharge side of the generated slurry is on the lower side.
  • the support frame portion 3B is provided on the support frame portion 3A so that the high-speed kneading mixer 4 is above the slurry hopper 7.
  • a raw material feeding guide mechanism 12 and a water supply mechanism 13 are provided above the high-speed kneading mixer 4.
  • a steel chute can be used as the raw material feeding guide mechanism 12.
  • steel piping can be used.
  • the slurry manufacturing apparatus 1 and the water supply source are connected by steel pipes.
  • the water supply source is arranged adjacent to the slurry manufacturing apparatus 1.
  • the water supply source may be arranged in a range where it can be supplied to the water supply mechanism 13, and the water supply source does not have to be arranged on the support base 2. As a result, the weight of the support base 2 that supports the main device can be further reduced, and the maximum ground pressure, which will be described later, can be reduced.
  • the high-speed kneading mixer 4 is preferably capable of high-speed agitation in order to enhance the productivity of coal ash slurry production.
  • the range of high-speed stirring is not particularly limited, but in the case of a vertical mixer, for example, it is preferably 130 rpm or more, more preferably 140 rpm or more, by an inverter control or the like. It is more preferable to set the rotation speed to 150 rpm or more.
  • the slurry in the batch type slurry production, the slurry can be made into a slurry with a kneading time of 30 seconds or less, more preferably 15 seconds or less.
  • the belt conveyor 5 loads these raw materials at high speed. It is a transport facility for transporting to the raw material feeding guide mechanism 12 provided at the charging port of the stirring mixer 4.
  • the belt conveyor 5 is detachably supported between the support frame portions 3B and 3C in an inclined state so that the material feeding guide mechanism 12 side becomes higher.
  • the belt conveyor 5 By using the belt conveyor 5, it is not necessary for the worker to carry the raw materials to the input port of the high-speed kneading mixer 4, so that the work efficiency is improved.
  • the raw material when the raw material is conveyed to the raw material feeding guide mechanism 12 by the belt conveyor 5, it is possible to measure the input amount of the raw material by measuring the operating time.
  • the silo for storing the fly ash is not necessary. This eliminates the need for a fly ash storage silo and an ash quantitative feeder, which are provided in the conventional slurry manufacturing apparatus, and thus the slurry manufacturing apparatus 1 can be downsized.
  • the material receiving hopper 6 is used to load the raw materials provided for loading the raw material on the belt conveyor 5 when mainly the wet ash and the clinker ash that are piled up in the field are used as the raw materials. Equipment.
  • the material receiving hopper 6 is supported by the support frame portion 3D.
  • the support frame portion 3D is provided on the support frame portion 3C so that the material receiving hopper 6 is above the loading surface of the belt conveyor 5.
  • the material receiving hopper 6 By providing the material receiving hopper 6 in this way, from the opening provided above the material receiving hopper 6, for example, the raw material introduced by using a heavy machine such as a backhoe or an excavator is stored, and the material receiving hopper 6 is stored downward.
  • the raw material can be dropped on the stacking surface of the belt conveyor 5 from the opening provided.
  • a scraped plate-shaped member between the belt conveyor 5 and the material receiving hopper 6 the thickness of the coal ash loaded on the belt conveyor 5 can be made uniform.
  • the slurry hopper 7 is a facility for temporarily storing the coal ash slurry produced by the high speed kneading mixer 4.
  • the slurry hopper 7 is supported by the support frame portion 3A.
  • a pipe L1 for leading out coal ash slurry is connected to the lower portion of the slurry hopper 7 so that the coal ash slurry can be supplied to the secondary side of the slurry manufacturing apparatus 1.
  • the stairs 8 (8A, 8B) are laid between the support base 2 and the support frame 3 in order to climb the work floor 10 provided on the support frame 3.
  • the stairs 8A are provided between the support base member 2B and the support frame portion 3D.
  • the stairs 8B are provided between the support base member 2A and the support frame portion 3B.
  • the stairs 8 are detachably fixed to the support base 2 and the support frame 3 by fastening with bolts or the like. Thereby, when dismantling the slurry manufacturing apparatus 1, it can be freely removed.
  • the maximum contact pressure is at 0.5 kgf / cm 2 or less, it is preferably 0.43kgf / cm 2 or less, 0.22kgf / cm 2 or less Is more preferable and 0.1 kgf / cm 2 or less is further preferable. If the maximum ground pressure of the slurry manufacturing apparatus 1 is 0.5 kgf / cm 2 or less, the slurry manufacturing apparatus 1 can be installed as long as the ground is a level that allows a wetland bulldozer to enter even if the ground is not hard and stable. ..
  • the installation place when installing the slurry manufacturing apparatus 1 of the present embodiment is not limited to the place which was the land before the start of the landfill treatment, but the place where the landfill treatment of the landfill disposal site described later has already been completed. It can also be installed in the land reclamation area.
  • the maximum ground pressure of the slurry manufacturing apparatus 1 is determined from the total weight (load) of the slurry manufacturing apparatus 1 including the support base 2 / area of the support base 2.
  • the mechanical load of the slurry manufacturing apparatus 1 is 35,513 kg
  • the load of the slurry manufacturing apparatus 1 including the load is 122 kN.
  • the slurry manufacturing apparatus 1 As described above, by installing the slurry manufacturing apparatus 1 at any point in the landfill landfill 60 or on the land 61 adjacent to the landfill landfill 60, the slurry pump supply capacity is not increased so much. Furthermore, the coal ash slurry can be stably supplied without further extending the slurry transport pipe. Further, since the slurry transport pipe can be shortened, the risk of clogging of the coal ash slurry inside the slurry transport pipe can be reduced.
  • the slurry manufacturing apparatus 1 of the present embodiment has been sufficiently studied for reduction in size and weight, and can actually achieve a maximum ground contact pressure of less than 0.2 kgf / cm 2 (0.194 kgf / cm 2 ). ..
  • the slurry manufacturing apparatus 1 applicable to the present embodiment relates to a connecting portion of each constituent member of the support base 2, the support frame 3, the high speed kneading mixer 4, the belt conveyor 5, the material receiving hopper 6, the slurry hopper 7, and the stairs 8. , You can release the lock at any point. With respect to the support base 2 and the support frame 3, the connection between the respective members can be released at any position. The fixation can be released, for example, by loosening the bolt at the fastening portion. As a result, even if the slurry manufacturing apparatus 1 of the present embodiment is installed once, it should be divided into two or more arbitrary units (aggregates), transported to a new installation place, and then installed again. You can
  • the slurry manufacturing apparatus 1 can be divided into two or more units. Each unit is an arbitrary combination selected from the supporting base members 2A and 2B, the frame members 3A to 3D, the stirring device 4, the belt conveyor 5, the material receiving hopper 6, the slurry hopper 7, and the steps 8A and 8B. You can
  • the slurry manufacturing apparatus 1 can be divided into, for example, eight units 1A to 1H.
  • the unit 1A is roughly configured to include a support base member 2A, a support frame portion 3A, and a slurry hopper 7.
  • the unit 1B has a supporting frame portion 3B, a stirrer 4, and a water supply mechanism 13, and is roughly configured.
  • the unit 1C has a schematic structure including a raw material feeding guide mechanism 12.
  • the unit 1D has a schematic structure including a support base member 2B and a support frame portion 3C.
  • the unit 1E has a schematic structure including a support frame portion 3D and a material receiving hopper 6.
  • the unit 1F includes a belt conveyor 5.
  • the unit 1G includes stairs 8A.
  • Unit 1H is composed of stairs 8B.
  • the weight of the unit 1B including the stirring device 4 is about 17t.
  • the number of unit divisions of the slurry manufacturing apparatus 1 is an example, and is not limited to this.
  • the number of units may be less than 8 by keeping the stairs 8A and 8b attached to the support base members 2A and 2B.
  • the number of units may be more than 8.
  • the position of unit division of the slurry manufacturing apparatus 1 is an example, and the present invention is not limited to this.
  • the position of division for forming the respective members of the support base 2 and the support frame 3 is an example, and the present invention is not limited to this.
  • a conventional slurry manufacturing apparatus is a large-scale construction that is equipped with a plurality of kneading devices such as a material storage facility that is a large silo, a weighing device such as a load cell, a spiral pin mixer that kneads materials, and a flow jet mixer. It was a thing. Therefore, it is difficult to dismantle and relocate the conventional slurry manufacturing apparatus after the installation.
  • the slurry manufacturing apparatus 1 can be disassembled into two or more units, it can be disassembled in units and moved to another place even after being installed once. Therefore, the slurry manufacturing apparatus 1 can move the slurry manufacturing apparatus 1 to the next landfill point without further increasing the supply capacity of the slurry pump, and without further extending the slurry transport pipe, to thereby obtain the coal ash slurry. Can be stably supplied. Further, since the slurry transport pipe can be shortened, the risk of clogging of the coal ash slurry inside the slurry transport pipe can be reduced.
  • the configuration including the belt conveyor 5 has been described as an example, but the configuration is not limited to this, and the raw material is directly fed into the high-speed kneading mixer 4 except for the belt conveyor 5 and the material receiving hopper 6. May be This makes it possible to further reduce the size and weight of the transfer type slurry manufacturing apparatus.
  • the above-described slurry manufacturing apparatus 1 has been described as an example of a configuration using wet ash and clinker ash as raw materials, but the present invention is not limited to this, and a configuration using dry ash may be used. More specifically, a coal ash (dry ash) silo may be provided above or at the side of the high speed kneading mixer 4.
  • Method for producing coal ash slurry A method for producing a coal ash slurry using the above-described slurry producing apparatus 1 will be described by taking as an example the case of using wet ash and clinker ash as raw materials.
  • the slurry manufacturing apparatus 1 applicable to this embodiment can use wet ash and clinker ash as raw materials for the coal ash slurry. Unlike dry ash, storage of raw materials does not require large silos. For example, as shown in FIG. 1, an ash temporary storage 40 can be provided next to the transfer-type slurry manufacturing apparatus 1 for storage.
  • the raw material wet ash and clinker ash are put into the material receiving hopper 6. Specifically, for example, the wet ash and the clinker ash that are piled up by a backhoe, a shovel car, etc. are transported. Then, a certain amount of raw material is supplied from the material receiving hopper 6 to the loading surface of the belt conveyor 5.
  • the loaded raw materials are conveyed to the raw material feeding guide mechanism 12 provided at the feeding port of the raw material kneading mixer 4, and a predetermined amount of raw material is supplied to the high speed kneading mixer 4.
  • the slurry manufacturing apparatus 1 of the present embodiment does not include a measuring device, but the amount of raw material input can be measured by measuring the operating time of the belt conveyor 5 when transporting the raw material. Then, water is supplied from the water supply mechanism 13 into the high-speed kneading mixer 4.
  • the amount of raw material and water supplied to the high-speed kneading mixer 4 does not need to be strictly controlled, but it can be calculated by measuring the water content of the raw material several times a day and making a correction based on that value. preferable.
  • the high-speed kneading mixer 4 Operate the high-speed kneading mixer 4 to produce a coal ash slurry.
  • the high-speed kneading mixer 4 is a vertical mixer
  • one batch of coal ash slurry can be produced in about 7 to 15 seconds by controlling the rotation speed at 130 to 156 rpm by inverter control.
  • the quality of the slurry to be produced may be within the range where the coal ash slurry is not clogged in the slurry transport pipe, and it is not always necessary to knead it until there is no lump.
  • the water content of the coal ash slurry is not particularly limited as long as the blending does not cause a large amount of bleeding.
  • the water content of the coal ash slurry is preferably 35% or more and 40% or less.
  • the produced coal ash slurry is transferred from the high speed kneading mixer 4 to the slurry hopper 7 and temporarily stored. Then, according to the demand of the landfill facility 70, the coal ash slurry can be supplied to the secondary side of the slurry manufacturing apparatus 1 from the coal ash slurry derivation pipe L1 provided in the lower portion of the slurry hopper 7.
  • the landfill landfill production method of the present embodiment is a method of producing landfill landfill by using the landfill facility 70 described above (that is, a landfill landfill landfill method).
  • the method for producing landfill land includes a step (first step) of partitioning the landfill area of the landfill landfill site 60 into one or more landfill areas having a required volume, and a slurry manufacturing apparatus (transfer type slurry). Manufacturing apparatus 1 and a step of installing pipes (second step), a step of operating the slurry manufacturing apparatus 1 to generate a slurry of coal ash (third step), and one of the landfills from the slurry manufacturing apparatus 1.
  • a step of adding a slurry (coal ash slurry) generated from coal ash containing at least one of dry ash, wet ash and clinker ash as a raw material until the volume of the landfill area is satisfied (fourth step), A method of drying the slurry in the landfill area (fifth step), and repeating the above third to fifth steps until the slurry is completely charged into the partitioned landfill area.
  • a slurry coal ash slurry
  • the landfill disposal site 60 is divided into one or more landfill areas having a required volume. Specifically, as shown in FIG. 1, a passage R is provided so as to cross the landfill disposal site 60, and the land R is divided into substantially rectangular landfill areas A to D so as to sandwich the passage R. Next, each of the landfill areas A to D is divided (divided) into landfill areas (1) to (8). In each of the landfill areas A to D, each of the landfill areas (1) to (8) serves as a landfill unit.
  • FIG. 6 is an enlarged view of the landfill area A applied to the method for producing a landfill site according to this embodiment.
  • FIG. 7 is a perspective view showing an example of the configuration of a landfill area applicable to the method for producing a landfill site according to this embodiment.
  • the landfill area (1) of the landfill area A has a landfill range defined by a partition (side) 30.
  • the partition 30 is a weir constructed at a predetermined height with a construction machine such as a backhoe.
  • the partition 30 that partitions the landfill region is not particularly limited as long as it functions as a side wall of the landfill region when the slurry is charged.
  • a bank provided so as to surround the periphery of the landfill area A- (1) can be used.
  • the material of the partition 30 is not particularly limited.
  • a material of the partition 30 a material containing at least a part of the same coal ash as the slurry charged in the landfill area A- (1) is preferable, and a material formed of only coal ash is more preferable.
  • the shape of the landfill area is not particularly limited. As shown in FIG. 7, when it is assumed that the slurry put into the landfill area A- (1) is spread using the concrete pump truck 80 to make the thickness uniform, the shape of the landfill area A- (1) is as follows: It is preferable that the periphery is a rectangle surrounded by the partition 30.
  • the height (height from the landfill surface) H of the partition 30 is not particularly limited and can be appropriately selected according to the water content of the coal ash slurry used for landfill.
  • the height (height from the landfill surface) H of the partition 30 can be 10 to 60 cm when the water content of the coal ash slurry used for landfill is in the range of 35 to 40%. It is preferably 20 to 40 cm.
  • the width W of the partition 30 is not particularly limited and can be appropriately selected according to the size of the concrete pump truck 80 used at the time of landfill.
  • the width W of the partition 30 can be set to 5 to 60 m.
  • the arm length of the concrete pump truck 80 is 25 m, so the width W is preferably a multiple of 25 m or 50 m. ..
  • the length L of the partition 30 is not particularly limited and can be appropriately selected according to the daily production amount of the slurry manufacturing apparatus 1 which is a slurry supply source.
  • the length L of the partition 30 can be 10 to 120 m.
  • the length L can be about 55 m.
  • the length L can be about 25 m.
  • the size (L ⁇ W ⁇ H) of the landfill region is designed so that the volume of the landfill region partitioned by the partition 30 and the daily production amount of the slurry manufacturing apparatus 1 that is the slurry supply source match.
  • the size (L ⁇ W ⁇ H) of the landfill region is designed so that the volume of the landfill region partitioned by the partition 30 and the daily production amount of the slurry manufacturing apparatus 1 that is the slurry supply source match.
  • the size (L ⁇ W ⁇ H) of the landfill region is designed so that the volume of the landfill region partitioned by the partition 30 and the daily production amount of the slurry manufacturing apparatus 1 that is the slurry supply source match.
  • each landfill area A to D it is preferable to divide the landfill areas (1) to (8) so that each landfill area has a grid pattern.
  • partitioning the landfill area by dividing each landfill area it is possible to share the partition 30 between adjacent landfill areas by using the partition 30, so it is necessary to provide the partition 30 individually for each landfill area. Eliminates efficiency.
  • the number of divisions is not particularly limited, but the water content of the coal ash slurry used for landfill is within the range of 35 to 40%, and the slurry thickness is about 30 cm.
  • the slurry thickness is about 30 cm.
  • the shapes of the landfill areas (1) to (8) are not limited.
  • the landfill regions (1) to (8) may have the same shape or different shapes.
  • a combination of two types of shapes may be used.
  • the size (L ⁇ W ⁇ H) of the landfill areas (1) to (4) is set to 25 m ⁇ 110 m ⁇ 0.3 m, and the landfill areas (5) to (8).
  • the size (L ⁇ W ⁇ H) of) is set to 50 m ⁇ 50 m ⁇ 0.3 m as an example.
  • a point P1 in the vicinity of the center of the divided landfill areas A to D of the passage R provided at the center of the landfill landfill 60 is selected as the installation site, and the location P1 is selected as shown in FIGS.
  • the slurry manufacturing apparatus (transfer type slurry manufacturing apparatus) 1 shown in 1 is installed. Specifically, as shown in FIG. 5, the eight units 1A to 1H of the slurry manufacturing apparatus 1 are respectively transported by a truck and loaded and unloaded by a crane to assemble the units 1A to 1H. At that time, as shown in FIG. 4, it is preferable that the level of the mechanical equipment is adjusted in mm by the adjusting bolt 9B.
  • a pipe L1 for leading out coal ash slurry from the slurry hopper 7 of the slurry manufacturing apparatus 1 is connected to a slurry pump 14.
  • the transportation pipe L2 connected to the slurry pump 14 is arranged up to the landfill area (1) of the landfill area A.
  • a plurality of pipes each having a length of about 4 m are prepared, and by connecting these pipes, the pipes are extended to the landfill region (1) and installed.
  • the tip of the transport pipe L2 is arranged in the hopper portion of the concrete pump truck 80 arranged at the position (a) shown in FIG. Then, the end of the flexible hose connected to the concrete pump truck 80 is arranged so as to be inside the partition 30 of the landfill area A- (1).
  • the slurry manufacturing apparatus 1 is operated to generate a coal ash slurry. Specifically, first, as shown in FIGS. 1, 2 and 3, the wet ash and clinker ash that are piled up in the temporary ash storage 40 are transported to the material receiving hopper 6 by a backhoe, a shovel car, or the like. Then, a certain amount of raw material is supplied from the material receiving hopper 6 to the loading surface of the belt conveyor 5.
  • the belt conveyor 5 is operated to supply a predetermined amount of raw material to the high speed kneading mixer 4.
  • the amount of raw material input is measured by measuring the operating time of the belt conveyor 5 when transporting the raw material.
  • water is supplied into the high-speed kneading mixer 4 and the high-speed kneading mixer 4 is operated to produce a coal ash slurry having a water content ratio of 35 to 40%.
  • One batch of coal ash slurry can be produced in about 15 seconds.
  • the produced coal ash slurry is transferred from the high speed kneading mixer 4 to the slurry hopper 7 and temporarily stored. Then, as shown in FIG. 1, the coal ash slurry is supplied to the transportation pipe L2 via the slurry pump 14 from the coal ash slurry derivation pipe L1 provided in the lower portion of the slurry hopper 7.
  • Coal ash slurry is poured from the slurry manufacturing apparatus 1 into any of the landfill areas until the volume of the landfill area is filled. Specifically, the coal ash slurry is discharged from the concrete pump truck 80 installed at the position (a) shown in FIG. 6, and coal is discharged to the inside of the landfill region (1) (25 m ⁇ 110 m ⁇ 0.3 m). Pour the ash slurry.
  • the coal ash slurry poured into the compartment spreads naturally due to its own fluidity, but the slurry surface naturally has a gradient of about 1/10 to 1/20, so at the boom tip of the concrete pump truck 80. Spread the slurry at the end of the attached hose to make the thickness uniform.
  • the supply of coal ash slurry from the slurry manufacturing apparatus 1 is temporarily stopped.
  • the connection between the concrete pump truck 80 and the slurry transport pipe L2 is released, and the concrete pump truck 80 is moved to the position (b) shown in FIG.
  • the transport pipe L2 is extended to the position (b) shown in FIG. 6 by appropriately disconnecting the pipes constituting the transport pipe and reconnecting the pipe at an arbitrary position.
  • supply of the coal ash slurry from the slurry manufacturing apparatus 1 is restarted, and the landfill area (1 ) Landfill the lower half.
  • the separated pipes should be left in a place where they will not interfere with the work without removing them from the place.
  • the coal ash slurry charged in the landfill area is dried. Specifically, the coal ash slurry charged in the landfill area is dried until the coal ash water content ratio becomes approximately 27% or less.
  • the method for drying the coal ash slurry is not particularly limited. Examples of the method for drying the coal ash slurry include natural drying and drying using a blower, but it is preferable to dry by natural drying.
  • the number of days required for naturally drying the coal ash slurry varies depending on the water content ratio of the initial coal ash slurry charged in the landfill region and the slurry thickness charged in the landfill region. As described above, if the water content of the coal ash slurry is within the range of 35 to 40% and the slurry thickness is about 30 cm, it is dried to the water content of about 26 to 27% by natural drying for about 7 to 8 days. To do.
  • the method for producing landfill land since dust or the like is not generated from the surface of the dried coal ash slurry, it is necessary to provide soil immediately on the slurry surface or an intermediate soil on the slurry surface as a measure for preventing dust scattering. There is no. Therefore, the work of providing the soil is not required, and the work efficiency is excellent, and the landfill disposal site 60 can be effectively utilized by the capacity of the soil.
  • the supply of coal ash slurry from the slurry manufacturing apparatus 1 is temporarily stopped.
  • the connection between the concrete pump truck 80 and the slurry transport pipe L2 is released, and the concrete pump truck 80 is moved to the position (d) shown in FIG.
  • the transportation pipe L2 is extended to the position (d) shown in FIG. 6 by appropriately disconnecting the pipes constituting the transportation pipe L2 and connecting them again at an arbitrary position.
  • supply of the coal ash slurry from the slurry manufacturing apparatus 1 is restarted, and the landfill area (2 ) Landfill the lower half. Keep the separated pipes in a place where they will not interfere with the work without removing them from the place.
  • the above third to sixth steps are repeated until the slurry is completely charged into the divided landfill areas (1) to (8) in the landfill area A. .. Specifically, regarding the landfill areas (3) and (4) shown in FIG. 6, the landfill areas (1) and (2) described above are reconnected while the separated pipes are connected again or the connected pipes are disconnected again. Landfill is carried out in the same manner as in. As for the landfill areas (5) to (8) (50 m ⁇ 50 m ⁇ 0.3 m) shown in FIG. 6, the landfill is performed twice in the same manner as the landfill areas (1) to (4) described above.
  • the installation place of the concrete pump vehicle 80 is not particularly limited as long as it is a position adjacent to the landfill areas (5) to (8).
  • the other landfill areas B, C, and D are similarly subjected to the divided landfill areas (1) to (8). Landfill.
  • the landfill of the first layer of each of the landfill areas (1) to (8) of all the landfill areas A to D is completed (the slurry that has been put into the landfill area is dried). After that, new landfill areas (1) to (8) are partitioned on the landfill areas A to D, and the slurry is newly charged. Specifically, the first step and the third to sixth steps are repeated. In this way, the landfill land can be produced by stacking the second and subsequent layers on each of the landfill regions (1) to (8) in the landfill areas A to D.
  • each of the landfill areas (1) to (8) in all the landfill areas A to D has a predetermined thickness (for example, one layer is 0.3 m).
  • a predetermined thickness for example, one layer is 0.3 m.
  • the slurry manufacturing apparatus 1 is divided into eight units 1A to 1H, and the slurry manufacturing apparatus 1 is moved to a new installation place different from the current installation place.
  • the slurry manufacturing apparatus 1 can be installed by selecting an installation location P2 that is distant from the installation location P1 provided in the passage R of the landfill landfill 60.
  • the landfill area in the new landfill area can be landfilled.
  • the landfill landfill obtained by the method for producing landfill landfill according to the present embodiment has a landfill density of 1.18 t / since the slurry landfill method used for landfill of the surface landfill landfill is applied to the landfill landfill landfill. It can be m 3 or more.
  • the landfill density of landfill reclamation land preferably in a 1.20 T / m 3 or more, and more preferably to 1.22t / m 3 or more.
  • the landfill landfill obtained by the method for producing landfill landfill according to the present embodiment (that is, the landfill landfill in a state where all the landfills are completed) has two or more layers of coal ash slurry when viewed in cross section in the thickness direction. , Preferably 5 layers or more, more preferably 10 layers or more.
  • the thickness of one layer is preferably in the range of 10 to 50 cm, more preferably 20 to 40 cm.
  • the intermediate soil is not provided between the layers.
  • coal ash containing at least one of dry ash, wet ash and clinker ash is generated as a raw material in the landfill area having a required volume. Since the slurry in the landfill area is dried after adding the slurry, high density landfill is possible, and the capacity of the landfill landfill 60 can be effectively used. In addition, since the surface after the slurry is dried is solidified and dust is not generated, it is not necessary to provide a cover soil as a measure for preventing dust and the like from scattering. Therefore, the landfill capacity of the landfill disposal site 60 can be effectively used by the capacity of the soil cover, and the life of the disposal site can be extended.
  • the slurry manufacturing apparatus 1 can be moved to an installation site near the landfill site according to the landfill site, so that the length of the transport pipe (slurry transport pipe) L2 can be reduced. It can be about 100 m. As a result, the possibility of clogging of the coal ash slurry in the transport pipe L2 is low, and therefore it is not necessary to strictly control the slurry quality. That is, according to the present embodiment, when the coal ash slurry is manufactured in the slurry manufacturing apparatus 1, it is not necessary to perform strict slurry quality control in order to prevent clogging of the pipes, so that the production capacity can be increased. ..
  • a landfill land having a landfill density of 1.18 t / m 3 or more can be obtained.
  • the configuration of the second embodiment to which the method for producing landfill land according to the present invention is applied will be described.
  • the method for producing the landfill land according to the second embodiment is different from the method for producing the landfill land according to the first embodiment described above in that the concrete pump truck 80 is used, but the concrete pump truck 80 is not used. It's different.
  • the backhoe 90 is used in the method for producing landfill land according to the second embodiment. This is an auxiliary use mode.
  • FIG. 8 is a perspective view which shows an example of a structure of the landfill area applicable to the manufacturing method of the landfill landfill of this embodiment.
  • the width W of the partition 30 is not particularly limited, and can be appropriately selected according to the size of the backhoe 90 used as an auxiliary when landfilling.
  • the width W of the partition 30 can be set to 5 to 50 m.
  • the arm length of the backhoe 80 is 8.8 m, so the width W is preferably about 15 m, which is twice that.
  • the length L of the partition 30 can be 10 to 150 m.
  • the length L is preferably about 88 m.
  • all the landfill areas (1) to (8) have the same shape.
  • the shape is preferably Specifically, in the landfill area A- (1) shown in FIG. 8, the size (L ⁇ W ⁇ H) of the landfill area is set to 15 m ⁇ 88 m ⁇ 0.3 m, and all the landfill areas (1) to (8) are The sizes may be the same.
  • the produced coal ash slurry is transferred from the high speed kneading mixer 4 to the slurry hopper 7 and temporarily stored. Then, as shown in FIG. 1, the coal ash slurry is supplied to the transportation pipe L2 via the slurry pump 14 from the coal ash slurry derivation pipe L1 provided in the lower portion of the slurry hopper 7.
  • Coal ash slurry is poured from the slurry manufacturing apparatus 1 into any of the landfill areas until the volume of the landfill area is filled. Specifically, as shown in FIG. 8, the coal ash slurry is discharged from the tip of the transport pipe L2 into the landfill area A- (1). The coal ash slurry discharged from the transport pipe L2 flows into the landfill region, but since it is deposited near the tip of the transport pipe L2, the backhoe 90 spreads the slurry to make the thickness uniform.
  • each landfill region can be landfilled as in the first embodiment.
  • each landfill region can be landfilled only by the backhoe 90 without using a concrete pump truck.
  • the landfill landfill applicable to the landfill landfill production method of the present invention may be land land created by landfilling the surface landfill landfill. Furthermore, after applying the slurry landfill as the landfill method of the water surface landfill, the generated land may be transferred to the landfill land production method of the present invention (that is, the landfill landfill landfill method). As a result, the slurry landfill can be continuously performed from the surface landfill to the landfill landfill.
  • a configuration in which a transfer-type slurry manufacturing apparatus is applied as a supply source of coal ash slurry has been described as an example, but the present invention is not limited to this.
  • a fixed type (stationary type) slurry manufacturing apparatus may be used as a supply source of the coal ash slurry.
  • a combination of a fixed type (stationary type) slurry manufacturing apparatus and a concrete pump car may be used as a supply source of the coal ash slurry.
  • the method for producing landfill land of the present invention it is possible to effectively use the landfill landfill. Further, since the surface of the slurry after drying is solidified and dust is not generated, it is not necessary to take measures to prevent scattering of dust and the like.
  • 1-Transfer type slurry manufacturing apparatus (slurry manufacturing apparatus, slurry supply source) 1A to 1H ... Unit (aggregate) 2 ... Support base 2A, 2B ... Support base member (laying iron plate) 3 ... Support frame 3A-3D ... Support frame part 4 ... High-speed kneading mixer (stirring device) 5 ... Belt conveyor (raw material transportation equipment) 6 ... Material receiving hopper (raw material feeding equipment) 7 ... Slurry hopper 8,8A, 8B ... Stairs 9 ... Mechanical level adjuster 9A ... Level adjustment base plate 9B ... Adjustment bolt 10 ... Floor (scaffolding) 11 ... Fence 12 ... Raw material feeding guide mechanism 13 ... Water supply mechanism 14 ...
  • Slurry pump slurry pressure feeding device 30 ... Partition (side) 40 ... Temporary ash storage 60 ... Land landfill 61 ... Land 70 ... Landfill facility (landfill) 80 ... Concrete pump car 90 ... Backhoe L1 ... Pipe for deriving coal ash slurry L2 ... Transport pipe (slurry transport pipe) R ... passage

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  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)

Abstract

L'invention concerne un procédé de réalisation de terrain réhabilité qui est destiné à réaliser un développement par réhabilitation d'un site d'enfouissement terrestre. Ledit procédé comprend les étapes consistant à : tracer une zone de réhabilitation du site d'enfouissement terrestre dans des régions d'enfouissement ayant chacune un volume requis; alimenter en bouillie générée en utilisant, comme matières premières, des cendres de charbon contenant au moins l'une des cendres sèches, des cendres humides et des cendres de clinker dans les régions d'enfouissement; et ensuite sécher la bouillie dans les régions d'enfouissement.
PCT/JP2019/042410 2018-10-29 2019-10-29 Procédé de réalisation de terrain réhabilité WO2020090829A1 (fr)

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Citations (9)

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Publication number Priority date Publication date Assignee Title
US5299692A (en) * 1993-02-03 1994-04-05 Jtm Industries, Inc. Method and apparatus for reducing carbon content in particulate mixtures
JP2002274899A (ja) * 2001-03-13 2002-09-25 Chugoku Electric Power Co Inc:The 石炭灰含有組成物及びこの組成物を用いた道路の路床・路盤の施工方法
JP2005034676A (ja) * 2003-05-27 2005-02-10 Sangaku Renkei Kiko Kyushu:Kk 焼却残渣に含まれる重金属類の安定化処理方法
JP2005087782A (ja) * 2003-09-12 2005-04-07 Kumagai Gumi Co Ltd 廃棄物処理予定区域の排水方法
JP2005171725A (ja) * 2003-12-15 2005-06-30 Kumagai Gumi Co Ltd 土質材料の含水比調整方法とその装置
JP2009221784A (ja) * 2008-03-18 2009-10-01 Mitsubishi Shoji Construction Materials Corp 土質改良工事方法及びそのシステム
JP2014091102A (ja) * 2012-11-06 2014-05-19 Kobelco Eco-Solutions Co Ltd 排ガス処理装置及び方法
JP2014166934A (ja) * 2013-02-28 2014-09-11 Ohbayashi Corp 石炭灰を用いた締固め材料、及び、その製造方法
JP2015073981A (ja) * 2013-10-11 2015-04-20 株式会社安藤・間 焼却残渣処分方法

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5299692A (en) * 1993-02-03 1994-04-05 Jtm Industries, Inc. Method and apparatus for reducing carbon content in particulate mixtures
JP2002274899A (ja) * 2001-03-13 2002-09-25 Chugoku Electric Power Co Inc:The 石炭灰含有組成物及びこの組成物を用いた道路の路床・路盤の施工方法
JP2005034676A (ja) * 2003-05-27 2005-02-10 Sangaku Renkei Kiko Kyushu:Kk 焼却残渣に含まれる重金属類の安定化処理方法
JP2005087782A (ja) * 2003-09-12 2005-04-07 Kumagai Gumi Co Ltd 廃棄物処理予定区域の排水方法
JP2005171725A (ja) * 2003-12-15 2005-06-30 Kumagai Gumi Co Ltd 土質材料の含水比調整方法とその装置
JP2009221784A (ja) * 2008-03-18 2009-10-01 Mitsubishi Shoji Construction Materials Corp 土質改良工事方法及びそのシステム
JP2014091102A (ja) * 2012-11-06 2014-05-19 Kobelco Eco-Solutions Co Ltd 排ガス処理装置及び方法
JP2014166934A (ja) * 2013-02-28 2014-09-11 Ohbayashi Corp 石炭灰を用いた締固め材料、及び、その製造方法
JP2015073981A (ja) * 2013-10-11 2015-04-20 株式会社安藤・間 焼却残渣処分方法

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