JP2017106258A - Sludge water disposal system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an industrial waste treatment system for improving a work environment of a separation cure area for disposing of sludge water, easy in securing a removal construction site, and capable of also reducing construction cost.SOLUTION: A sludge water disposal system 10 comprises a first separation cure area 14 provided in a raking-out port 20 of a chimney lower part and executing work for sucking sludge water 12 of including asbestos, a second separation cure area 16 provided in a separate place from the first separation cure area 14 and executing disposal work of the sludge water 12 and an air carrier machine 18 for carrying to a storage tank 22 of the second separation cure area 16 by sucking the sludge water 12 from the raking-out port 20 of the chimney lower part of the first separation cure area 14, and executes work for disposing of the sludge water 12 in the first separation cure area 14 and the second separation cure area 16 by operating the air carrier machine 18, and thus, can execute the work under a desirable environment in the first separation cure area 14 and the second separation cure area 16.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a sludge water disposal system for disposal of sludge water containing asbestos removed by a method of removing asbestos-containing lining material in a chimney with ultra-high pressure water.

In buildings constructed in the Showa era, asbestos (asbestos) was used as fireproof covering materials such as room ceilings, walls or steel frames, heat insulating materials, sound absorbing materials, heat insulating materials and the like. Also, most chimneys of cylindrical structures connected to boilers and the like are provided with asbestos-containing lining materials (chimney asbestos insulation, asbestos cylinder tubes, etc.) that are formed into a compression cylinder shape by a binder on the inner wall of the chimney. It was.
However, asbestos is currently in the direction of use restriction because it is known that inhaling asbestos causes malignant mesothelioma. Moreover, about the building which uses asbestos, the dismantling of a building or the removal process of asbestos is performed.

In the asbestos treatment of the chimney, in order to prevent the asbestos fibers generated during the asbestos removal and the like from diffusing out of the removal work area, in the removal work area, for example, in the chimney asbestos-containing lining material removal method, the chimney head, Curing is performed to isolate and seal the lower part of the chimney.
Further, as a construction method used for removing asbestos from a chimney, a method of removing asbestos-containing lining material with ultra-high pressure water is known. For example, as shown in FIG. 2, an ultrahigh pressure water injection device (asbestos removal device) is suspended from the chimney head inside the chimney so that it can be raised and lowered, and from an ultrahigh pressure water generating pump installed outside the ultrahigh pressure water injection device Supply ultra-high pressure water. The ultra-high pressure water is injected from the injection nozzle of the ultra-high pressure water injection device onto the asbestos-containing lining material of the chimney, and the lining material is peeled off or crushed and removed.
The asbestos-containing lining material of the removed chimney is scraped from the scrape outlet 20 at the lower part of the chimney by a plurality of workers in an isolated curing area 28 (work area at the lower part of the chimney) provided by curing at the lower part of the chimney. They are packed in bags, taken out as industrial waste, and disposed of.
Moreover, in the construction method in which ultrahigh pressure water is sprayed and removed on the asbestos-containing lining material of the chimney, sludge water 12 containing asbestos generated at the time of removal accumulates in the scraping port 20 at the lower part of the chimney. The sludge water 12 is treated with a water-absorbing agent in a high temperature state in the isolated curing area 28, packed in a bag, and discarded.

The sludge water containing asbestos generated at the time of removal in the construction method in which ultrahigh pressure water is jetted and removed to the asbestos-containing lining material of the chimney, that is, the sludge water 12 collected at the scrape outlet 20 at the lower part of the chimney is a high temperature around 60 ° C. Is. The room in the isolation curing area 28 has a temperature of around 50 ° C., and the worker wearing protective clothing can remove sludge water 12, removed asbestos-containing lining material, etc. (hereinafter “ "Asbestos-containing materials"). However, even if the asbestos dust could be removed with protective clothing, heat insulation and heat insulation could not be achieved, and bagging work in a hot and humid work area was severe for workers.
Currently, there is provided a method for removing buried asbestos pipes and an apparatus therefor that can improve the working environment in the construction method in which ultrahigh pressure water is jetted and removed from the asbestos-containing lining material of the chimney (for example, Patent Document 1). ).

JP 2006-83600 A

  The treatment system for asbestos-containing materials described in Patent Document 1 connects a suction hose to the exhaust heat outlet at the lower end of the asbestos tube for the asbestos-containing material removed by the asbestos removal method that crushes the asbestos tube of the chimney with ultra-high pressure water The removal process is performed using a vacuum vehicle. According to the asbestos-containing material treatment system described in Patent Document 1, since the suction hose of the vacuum car is connected to the exhaust heat outlet at the lower end of the asbestos pipe, it is not necessary to isolate and cure the exhaust heat outlet at the lower end of the asbestos pipe. That is, it is not necessary to provide the isolation curing area of FIG. 2, and the bagging operation in the high temperature operation area isolated and cured can be avoided.

  However, in the asbestos-containing waste disposal system that sucks and removes using a vacuum vehicle, the asbestos-containing material sucked into the vacuum vehicle is transported to the asbestos-containing precipitate separation treatment site installed in the removal work site, Asbestos-containing materials were disposed of (bagging, etc.). Therefore, it was necessary to secure a wide range of removal work sites for the arrangement of vacuum cars and sedimentation treatment plants. In addition, three steps of suction, transport, and storage were required to remove the asbestos-containing material. In addition, purchasing a vacuum car was expensive.

  In order to solve the above problems, the present invention improves the working environment of the isolated curing area where the sludge collected in the scrape outlet at the bottom of the chimney is disposed of, and can easily secure the removal work site and reduce the construction cost. The object is to provide an industrial waste treatment system.

  The sludge water disposal system of the present invention is a sludge water disposal system that disposes of sludge water containing asbestos generated by a method of spraying and removing ultra-high pressure water on the asbestos-containing lining material of the chimney. The first isolation curing area, which is provided at the lower scraping port and performs the work of sucking sludge water, and the second isolation which is provided in a different place from the first isolation curing area and which performs the disposal work of sludge water A curing area, and an air transporter that sucks sludge water from the chimney bottom of the first isolation curing area and transports it to the storage tank of the second isolation curing area. In the isolated curing area and the second isolated curing area, the work of disposing of sludge water is performed.

  INDUSTRIAL APPLICABILITY The present invention is capable of lowering the room temperature in an isolated curing area where asbestos-containing materials such as sludge water are discarded in a construction method in which ultrahigh pressure water is jetted and removed from an asbestos-containing lining material of a chimney. Thereby, the working environment of an isolation curing area can be improved. In addition, by using an air carrier for the asbestos-containing material conveying means, the conveying time can be shortened and the construction cost can be reduced.

It is a figure showing the sludge water disposal processing system of this invention. It is a figure showing the conventional sludge water disposal processing system.

  The present invention realizes improvement of the temperature of a work area in the disposal of asbestos-containing materials such as sludge water in a construction method in which ultrahigh pressure water is jetted and removed from an asbestos-containing lining material of a chimney.

The sludge water disposal system of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a sludge water disposal system of the present invention. FIG. 2 is a diagram showing a conventional sludge water disposal system.
A sludge water disposal system 10 according to the present invention is a sludge water disposal system for disposal of sludge water 12 containing asbestos generated by a method of spraying and removing ultrahigh pressure water on an asbestos-containing lining material of a chimney. The first isolation curing area 14 that performs the work of sucking the sludge water 12 and the first isolation curing area 14 that is provided in the scrape outlet 20 at the lower part of the chimney, An air carrier 18 that sucks the sludge water 12 from the second isolating and curing area 16 that performs the discarding work and the scrape outlet 20 at the lower part of the chimney of the first isolating and curing area 14 and conveys the sludge water 12 to the storage tank 22 in the second isolating and curing area 16. And operating the air conveyance machine 18 to perform the work of disposing of the sludge water 12 in the first isolation curing area 14 and the second isolation curing area 16 (FIG. 1).
In the construction method in which the asbestos-containing lining material of the chimney is removed by spraying ultrahigh-pressure water, sludge water 12 of about 60 ° C. containing asbestos is generated. Due to the generation of the high-temperature sludge water 12, the room temperature of the first isolated curing area 14 in FIG. 1 and the room temperature of the isolated curing area 28 in FIG.

The first isolation curing area 14 is an area for isolating and curing the scraping port 20 (the scraping port of the removed asbestos-containing lining material) at the lower part of the chimney, and sucks the sludge water 12 containing asbestos collected in the scraping port 20. It is an area. In the present invention, since only one worker is required to perform the suction operation of the sludge water 12, the first isolation curing area 14 can be provided even in a removal work site where only a narrow space can be secured.
The second isolation curing area 16 is a work area for storing the sludge water 12 transported from the first isolation curing area 14 and carrying out bagging (disposal) after the coagulation sedimentation treatment. The location of the storage tank 22 for storing the sludge water 12 and a place where an area where the sludge water 12 can be packed can be secured is isolated and cured.
The storage tank 22 is for subjecting the sludge water 12 conveyed from the first isolation curing zone 14 to coagulation sedimentation treatment.

The air carrier 18 includes an air carrier body 18a (ejector), a suction duct hose 18b, a discharge duct hose 18c, and a compressor 18d (compressed air). The air carrier main body 18a uses compressed air as the driving energy, and can carry solids, powders, and the like. It is used for collecting sand and powder because it does not have complicated structures and protrusions inside, and can perform suction, transport and discharge at the same time. Examples of the commercially available air transport machine main body 18a include a trade name “Jector”.
A suction duct hose 18b, a discharge duct hose 18c, and a compressor 18d are connected to the air carrier main body 18a. When compressed air is supplied from the compressor 18d to the air transport body 18a, the transported material is sucked from the suction port 24 of the suction duct hose 18b, and the sucked transport material is sucked into the suction duct hose 18b, the air transport body 18a, It passes through the discharge duct hose 18c and is discharged from the discharge port 26 of the discharge duct hose 18c. In the present invention, the suction port 24 of the suction duct hose 18b is disposed in the scraping port 20 at the lower part of the chimney, and the discharge port 26 of the discharge duct hose 18c is directed to the storage tank 22 in the second isolated curing area 16. The sludge water 12 collected in the scrape outlet 20 at the lower part of the chimney is conveyed (pressure-fed) to the storage tank 22 by the operation of the air conveying machine 18.
Thus, the separate steps of suction, transport, and storage that have been conventionally performed in removing asbestos-containing materials can be simultaneously performed by using the air transporter 18. Furthermore, construction costs can be reduced by using an air carrier 18 that is less expensive than a vacuum vehicle.

(Experimental example: sludge water disposal system of the present invention)
In the chimney asbestos removal work using the method of removing the asbestos-containing lining material of the chimney by jetting ultrahigh pressure water, the present invention was carried out on the day when the outside air temperature was 27 ° C. (FIG. 1). A commercially available product (trade name “Jector”) was used for the air carrier body 18a. At this time, the temperature of the sludge water 12 in the first isolation curing area 14, the room temperature in the first isolation curing area 14, the room temperature in the second isolation curing area 16, and the temperature of the sludge water 12 in the storage tank 22 in the second isolation curing area 16. Was measured.

(Comparative example: conventional sludge water disposal system)
In the chimney asbestos removal work using the method of removing the asbestos-containing lining material of the chimney by jetting ultra-high pressure water, the isolation that isolates and cures the scraper 20 at the lower part of the chimney shown in FIG. In the curing area 28, the water absorbent treatment of the sludge water 12 and the bagging work of the sludge water 12 were performed. At this time, the temperature of the sludge water 12 in the isolation curing area 28 and the room temperature of the isolation curing area 28 were measured.
The isolation curing area 28 of the comparative example is an area where all disposal operations such as bagging, such as water absorbent treatment of the sludge water 12, are performed (FIG. 2).
Table 1 shows the measurement results of the experimental example and the comparative example. The temperature of the sludge water 12 in the isolation curing area 28 of the comparative example and the room temperature of the isolation curing area 28 are the columns of the temperature of the sludge water 12 in the first isolation curing area 14 and the room temperature of the first isolation curing area 14 in the experimental example. Respectively.

In the above experimental example and comparative example, the temperature of the sludge water 12 in the first isolation curing area 14 of the experimental example was 62 ° C., and the temperature of the sludge water 12 in the isolation curing area 28 of the comparative example was about 58 ° C.
However, in the experimental example, the room temperature of the first isolation curing area 14 was 32 ° C., and the difference from the temperature 62 ° C. of the sludge water 12 in the first isolation curing area 14 was 30 ° C. Moreover, the room temperature 32 degreeC of the 1st isolation curing area 14 was the temperature which can be equal to the suction operation | work of sludge water 12 (In addition, the removal work of asbestos containing materials other than sludge water).
On the other hand, the room temperature in the isolated curing area 28 of the comparative example is 47 ° C. (If the outside air temperature is 27 ° C., which is the same as the experimental example, it is expected that the room temperature in the isolated curing area may be close to 50 ° C.). The difference between the temperature 58 ° C of the sludge water 12 in the isolated curing area 28 was only 11 ° C. The room temperature in the isolated curing area 28 of the comparative example was 47 ° C., which was unacceptable for carrying out disposal work such as bagging of sludge water 12.
Moreover, in this invention, the room temperature of the 2nd isolation curing area 16 which performs a bagging operation | work is 33 degreeC substantially the same as the room temperature of the 1st isolation curing area 14, and is the temperature which can be equal to the disposal operation of a bagging. there were. Furthermore, the temperature of the sludge water 12 in the storage tank 22 was 41 ° C. Since the sludge water 12 having an extremely low temperature could be obtained from the sludge water 12 having a temperature of about 60 ° C. packed in the isolated curing area 28 of the comparative example, the bagging could be easily performed.
As described above, the isolation curing area in which the high-temperature sludge water 12 accumulated in the scrape outlet 20 at the lower part of the chimney is discarded, the first isolation curing area 14 in which the sludge water 12 is sucked, and the sludge water 12 disposal work. The second isolation curing area 16 is divided into two work areas, and the sludge water 12 is sucked from the scrape outlet 20 at the lower part of the chimney of the first isolation curing area 14 by using the air conveyance device 18. By transporting to the storage tank 22, the room temperature of the isolation curing areas 14 and 16 could be lowered.
In addition, in the chimney asbestos removal work using the method of removing the asbestos-containing lining material of the chimney by injecting ultrahigh pressure water, steam is generated when the ultrahigh pressure water is injected to remove the lining material. In the comparative example, the isolation curing area 28 was filled with steam, and the work was performed in a state where the visibility was poor and the surroundings could not be seen. On the other hand, in the experimental example, steam did not spread to the first isolated curing area 14, and the work could be performed in a favorable environment.
As described above, it has been found that, in the isolation curing zones 14 and 16 of the present invention, it is possible to reduce the heavy labor of the disposal treatment of asbestos-containing materials such as sludge water.

In addition, as the first isolation curing area 14 (sludge water transport source location) and the second isolation curing area 16 (sludge water transport destination location) are installed separately, disposal of asbestos-containing materials such as sludge water at the bottom of the chimney Since it is not necessary to provide a large work area for processing, it is easy to secure a removal work site. Furthermore, since the air carrier 18 is used, it does not take time to transport sludge water, and disposal can be performed without incurring large expenses such as purchasing a vacuum car, so that the construction cost can be reduced.
As described above, according to the present invention, it is possible to improve the working environment of the isolated curing area where the asbestos-containing material such as sludge water is discarded, to easily secure the removal work site, and to reduce the construction cost.

DESCRIPTION OF SYMBOLS 10 Sludge water disposal processing system 12 Sludge water 14 1st isolation curing area 16 2nd isolation curing area 18 Air conveyance machine 20 Scraping outlet 22 of a chimney lower part 22 Storage tank

Claims (1)

A sludge water disposal system that disposes sludge water containing asbestos generated by a method of spraying and removing ultrahigh pressure water on the asbestos-containing lining material of the chimney, and is provided at the scrape outlet at the bottom of the chimney. A first isolated curing area where the sludge water is sucked, a second isolated curing area which is provided separately from the first isolated curing area and where the sludge water is disposed, and a first isolated curing area. An air conveyance device that sucks sludge water from the scrape outlet at the bottom of the chimney and conveys it to the storage tank of the second isolation curing area, and operates the air conveyance machine 18 to operate the first isolation curing area and the second isolation curing area A sludge water disposal system, characterized in that the sludge water is disposed of in the interior.

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