JP2007117909A - Scattering asbestos treatment method, apparatus used for the method, and vehicle loaded with the apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and apparatus for more safely treating scattering asbestos in a simple manner in demolishing and removal work of building materials containing asbestos. <P>SOLUTION: The scattering asbestos treatment method comprises: a first step of collecting dust of scattering asbestos generated when stripping asbestos; a second step of mixing the scattering asbestos collected in the first step with cement, fine aggregate, coarse aggregate and water; and a third step of pouring the mixture obtained in the second step into a prescribed form for solidifying. The apparatus used for the method comprises a dust collector and a mixer. The dust collector is provided with a dust collecting nozzle collecting the scattering asbestos and a transport passage sending the collected scattering asbestos to the mixer, and the mixer is provided with an agitator in a vessel with a prescribed capacity and a discharge nozzle discharging the mixture from the vessel. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method and an apparatus for safely disposing scatterable asbestos in dismantling / removal work of building materials containing asbestos.

  Asbestos (asbestos), a mineral present in nature, has been widely used for building materials and automobile brakes because it is inexpensive and has excellent properties such as heat insulation, heat resistance, and soundproofing. However, the risk of cancer was pointed out, and from the viewpoint of ensuring the health of workers engaged in construction work, etc., certain regulations have been made under the Industrial Safety and Health Act. At present, manufacturing and use are prohibited in principle, but in the past, they have been used for the purpose of heat insulation of buildings and the like, and there are still many places that are left untreated. In particular, the use of spray materials containing asbestos has been confirmed in hospitals and schools throughout the country, which is a major social problem. Such facilities are required to be removed and dismantled as soon as possible, but since there are a large number of such facilities, it can be said that there is a social demand for technology that can reduce work costs.

  In addition, asbestos, if left unattended, its fiber may scatter in the air and harm the human body, and normal dismantling treatment will generate dust containing asbestos. May also be harmful. In particular, sprayed asbestos is highly likely to be scattered due to deterioration or the like even when it is not dismantled, and recently it is said to be the cause of mesothelioma and lung cancer. Therefore, when dismantling work such as buildings containing asbestos, it is necessary to take sufficient measures not only for workers but also for the neighborhood.

  Furthermore, since there are several types of asbestos, their properties (toxicity) and durability vary depending on the age of use. Therefore, when assembling and removing building materials containing asbestos, it is appropriate to investigate what asbestos is used, how dangerous it is, and what measures are effective. However, it is indispensable to ensure safety and ensure safety, and the above problems become prominent when the work is carried out easily.

  In view of this, various methods have been developed to safely dispose of asbestos-containing building materials and the like during dismantling and removal work. For example, a method (Japanese Patent Laid-Open No. 2000-226942) is characterized in that asbestos tube is continuously crushed by jetting ultra-high pressure water, and asbestos dust and asbestos pieces crushed by a suction hose are sucked and removed. is there. According to this method, it is possible to remove the buried asbestos pipe without scattering the asbestos and without carrying out the chipping work of the housing. However, it cannot cope with the removal of the ceiling board or the sprayed wall surface, and the problem of post-treatment of the sprayed water remains. In addition, a technique and apparatus technology for non-polluting and solidifying asbestos waste at a relatively low cost using incinerated ash or the like of general waste or industrial waste as a solvent has also been developed (Japanese Patent Laid-Open No. Hei 8). -141537). However, according to such a method, although dismantled asbestos-containing material can be treated, a melting furnace is required, so a large-scale facility is required and the problem due to scattering at the work site cannot be solved. . In addition, a technology has been developed to dismantle the building by filling the inside of the dismantled building with a foam having a viscosity generated with a surfactant and air, or by directly supplying the foam, crushing part, etc. of the structure. However, since the asbestos fiber piece and the structure pulverized piece generated by disassembly are encapsulated with foam, a problem of post-processing occurs in part disassembly and the like. Therefore, none of the techniques has solved the problem.

JP 2000-226942 A JP-A-8-141537 JP-A-8-284438

  In view of the above problems, an object of the present invention is to provide a method and an apparatus for easily and more safely disposing scatterable asbestos in dismantling / removing work such as building materials containing asbestos. It is.

  In order to achieve the above-mentioned object, the present invention is a method for safely disposing scatterable asbestos, which comprises a first step of collecting scatterable asbestos generated during asbestos peeling, and the first step. A second step of mixing the collected dustable asbestos with cement, fine aggregate, coarse aggregate and water, and a third step of pouring the mixture mixed in the second step into a predetermined mold and solidifying it. The structure is composed of

  Further, the mixing ratio of the scattering asbestos, cement, fine aggregate, coarse aggregate and water in the second step may be 5: 2: 3: 3: 1.

  Furthermore, the present invention comprises a dust collector and a mixer to execute the method for disposing of the dustable asbestos, and the dust collector mixes the dust collecting nozzle for dusting the dustable asbestos and the dusty dustable asbestos. The mixer is a scatterable asbestos disposal apparatus provided with a stirrer in a container of a predetermined capacity and having a discharge nozzle for discharging the mixture from the container.

  Still further, in the dispersible asbestos disposal apparatus, a cement tank that contains cement, a fine aggregate tank that contains fine aggregate, a coarse aggregate tank that contains coarse aggregate, and a water tank that contains water It is also possible to adopt a configuration provided with

  And in the said scattering asbestos disposal apparatus, it is also possible to employ | adopt the structure provided with the control part for controlling automatically the amount of scattering asbestos, cement, fine aggregate, coarse aggregate, and water.

  And it is also useful to set it as a scattering asbestos disposal vehicle by carrying the said scattering asbestos disposal apparatus.

  According to the method and apparatus for disposing scatterable asbestos according to the present invention, asbestos fiber pieces and structure crushed pieces generated during dismantling are sucked in a sealed room, so that they can be isolated and removed from the general environment. It becomes. Therefore, the asbestos fiber pieces and concrete crushed pieces during dismantling work can be prevented from scattering and floating in the atmosphere, and the impact on human bodies such as workers and passersby can be greatly reduced. Has an effect.

  In addition, according to the method and apparatus for disposing scatterable asbestos according to the present invention, an effect that it can be safely treated as industrial waste is also exhibited.

  Furthermore, according to the method and apparatus for dispersal of fusible asbestos according to the present invention, it is possible to reuse as recycled concrete by mixing a harmful substance adsorbent such as zeolite when stirring with cement. Is beneficial.

  Furthermore, according to the method and apparatus for disposing of dispersible asbestos according to the present invention, by installing the dispersible asbestos disposer on a vehicle, the facility can be easily moved and discharged to a formwork at a remote location. Is possible.

  The present invention relates to a method of collecting dusty asbestos A generated during asbestos peeling with a dust collector 1, mixing it with a concrete material such as cement S, aggregate K, water W, etc., and finally solidifying it as concrete. The biggest feature is the adoption. Hereinafter, the disposal method of the scattering asbestos A concerning this invention and the apparatus used for the method are demonstrated based on drawing.

  The method for disposing scatterable asbestos A according to the present invention includes a first step of collecting scatterable asbestos A generated at the time of asbestos peeling, and a diffusive asbestos A collected by the first step as cement S, It consists of a second step of mixing with fine aggregate K1, coarse aggregate K2 and water W, and a third step of pouring the mixture 8 mixed in the second step into a predetermined mold 6 and solidifying it.

  As a pre-stage of the first step, dismantling / removal work of building materials containing asbestos is performed, and when the asbestos is peeled in the work, scattering asbestos A and non-scattering asbestos are generated. At this time, non-scattering asbestos can be disposed as normal industrial waste, but scattering asbestos A is designated as specially managed industrial waste, and the disposal method is different.

  In order to dispose of the scattering asbestos A, dust collection of the scattering asbestos A is performed as a first step. In order to collect the scattering asbestos A, the dust collector 1 is used. However, the dust collector 1 is not particularly limited. The dustable asbestos A collected by the dust collector 1 is then mixed with cement S, fine aggregate K1 such as sand, coarse aggregate K2 such as gravel, and water W in the second step. For such mixing, a general mixing device may be used. For example, mixing with a mixer truck or the like can be considered. The mixed mixture 8 is poured into a predetermined mold 6 and solidified as a third step, and finally solidified as concrete. In this way, the scatterable asbestos A is converted to non-scatterable asbestos by solidifying as concrete, and can be treated as normal industrial waste.

  In the second step, the mixing ratio of the scattering asbestos A, cement S, fine aggregate K1, coarse aggregate K2 and water W can be considered to be a volume ratio of 5: 2: 3: 3: 1. . That is, the cement S, the fine aggregate K1, the coarse aggregate K2 and the water W may be mixed at the same mixing ratio as in the case of ordinary concrete production. In consideration of safety from erosion, etc., the above ratio is desirable. However, it is not limited to such a ratio for the scatterable asbestos A, and is appropriately determined in consideration of safety.

  FIG. 1 is a schematic explanatory view showing a first embodiment of a dispersible asbestos disposal apparatus according to the present invention. The scattering asbestos disposal apparatus includes a dust collector 1 and a mixer 4. The dust collector 1 is provided with a dust collection nozzle 2 for collecting the dustable asbestos A and a conveyance path 3 for sending the dusty scattered asbestos A to the mixer 4. The mixer 4 has a structure in which a stirrer 7 is provided in a container having a predetermined capacity and a discharge nozzle 5 for discharging the mixture 8 from the container.

The operation of the dusting asbestos disposal apparatus will be described. The dusting asbestos A collected from the dust collecting nozzle 2 in the dust collector 1 is sent through the transport path 3 into the container in the mixer 4. The scattering asbestos A is mixed with cement S, fine aggregate K1, coarse aggregate K2 and water W in the container, and the resulting mixture 8 is discharged from the discharge nozzle 5 to the mold 6.
First, the work space is subjected to strict curing with a plastic sheet or the like to completely seal the target building, and the place to be removed and the other space are completely isolated. By this isolation, the asbestos scattering due to the dismantling work is shut out and the surroundings are prevented from being scattered.

  FIG. 2 is a schematic explanatory view showing a second embodiment of the dispersible asbestos disposal apparatus according to the present invention. The dispersible asbestos disposal apparatus includes a cement tank 10 for accommodating cement S, a fine aggregate tank 11 for accommodating fine aggregate K1, and a coarse bone in the dispersible asbestos disposal apparatus according to the first embodiment. A coarse aggregate tank 12 for storing the material K2 and a water tank 13 for storing water W are provided.

  The cement tank 10 containing the cement S, the fine aggregate tank 11 containing the fine aggregate K1, the coarse aggregate tank 12 containing the coarse aggregate K2, and the water tank 13 containing the water W are independently provided. These tanks have a dedicated supply port, a conveyance path, a supply valve, a flow meter, and a mechanism for discharging the granular material using compressed air. It goes without saying that equipment and mechanisms necessary for storage and transportation are provided.

  In addition, by providing the control part C as shown in the drawing, the mixing amount of the scattering asbestos A, cement S, fine aggregate K1, coarse aggregate K2 and water W into the container in the mixer 4 is mixed. It is also possible to adopt a structure that can be automatically controlled according to the above.

  FIG. 3 is a schematic explanatory view showing an embodiment of the scattering asbestos disposal vehicle T according to the present invention. The dispersible asbestos disposal vehicle T is loaded with a dispersible asbestos disposal device on the loading portion of the vehicle in order to enable dismantling processing or the like at the destination, and the dispersible asbestos disposal device contains cement S. The cement tank 10, the fine aggregate tank 11 for accommodating the fine aggregate K1, the coarse aggregate tank 12 for accommodating the coarse aggregate K2, and the water tank 13 for containing the water W are provided separately. In addition, by providing the control unit C, the mixing amount of the scattering asbestos A, cement S, fine aggregate K1, coarse aggregate K2 and water W into the container in the mixer 4 according to the mixing ratio. A structure that can be automatically controlled is also possible.

  When such a configuration of the scatterable asbestos disposal vehicle T is adopted, it is possible to move to the site and work as it is, so that the facility can be easily moved and discharged to the formwork 6 at a distant place.

  As described above, the asbestos product disposal method, the apparatus used in the method, and the vehicle equipped with the apparatus according to the present invention are used to cut, remove, and dismantle asbestos products that have become a problem in recent years. When working, etc., it can be treated as normal industrial waste while preventing exposure to workers and surrounding residents. If it is possible to prevent harmful substances from flowing out by mixing adsorbents such as zeolite, and safety can be ensured, for example, recycled concrete to sea breakwaters, tetrapots, river embankments, etc. It can also be used widely.

It is a schematic explanatory drawing which shows 1st embodiment of the dispersible asbestos disposal apparatus concerning this invention. It is a schematic explanatory drawing which shows 2nd embodiment of the dispersible asbestos disposal apparatus concerning this invention. It is a schematic explanatory drawing which shows one Embodiment of the scattering asbestos disposal vehicle concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dust collector 2 Dust collection nozzle 3 Conveyance path 4 Mixer 5 Discharge nozzle 6 Mold 7 Stirrer 8 Mixture 10 Cement tank 11 Fine aggregate tank 12 Coarse aggregate tank 13 Water tank A Scatterable asbestos C Control part K Aggregate K1 Fine Aggregate K2 Coarse aggregate S Cement T Scattering asbestos disposal vehicle W Water

Claims (6)

  A method for safely disposing scatterable asbestos, the first step of collecting the scatterable asbestos generated during the asbestos peeling, and the scatterable asbestos collected by the first step as cement, fine Scatterable asbestos comprising: a second step of mixing with aggregate, coarse aggregate and water; and a third step of pouring the mixture mixed in the second step into a predetermined mold and solidifying it. Disposal method.   2. The scattering according to claim 1, wherein the mixing ratio of the scattering asbestos, cement, fine aggregate, coarse aggregate and water in the second step is a volume ratio of 5: 2: 3: 3: 1. How to dispose of sex asbestos.   An apparatus used in the method for disposing of dustable asbestos according to claim 1 or 2, comprising a dust collector and a mixer, wherein the dust collector is a dust collecting nozzle and dust collector for collecting dust from asbestos. A transport path for sending the dispersed asbestos to the mixer, the mixer being equipped with a stirrer in a container of a predetermined capacity and a discharge nozzle for discharging the mixture from the container Asbestos disposal equipment.   In the scatterable asbestos disposal apparatus, a cement tank that contains cement, a fine aggregate tank that contains fine aggregate, a coarse aggregate tank that contains coarse aggregate, and a water tank that contains water are provided. The scattering asbestos disposal apparatus of Claim 3 characterized by the above-mentioned.   The scattering property according to claim 4, further comprising a control unit for automatically controlling a mixing amount of the scattering asbestos, cement, fine aggregate, coarse aggregate, and water in the scattering asbestos disposal apparatus. Asbestos disposal equipment. A scatterable asbestos disposal vehicle equipped with the scatterable asbestos disposal apparatus according to any one of claims 3 to 5.

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