JP2003130316A - Dismantling system for waste treatment facilities - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dismantling system for waste treatment facilities not to harm workers' health or cause environmental pollution by dangerous substances. SOLUTION: The state of pollution of the facilities by dioxins, the spots where asbestos and the like are used in the facilities, and the locations of electrical appliances supposedly containing PCB are investigated in advance and, based on the results, pollutants are removed, and asbestos-containing members and electrical appliances supposedly containing PCB are removed from the facilities, and then the facilities are dismantled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for dismantling a waste treatment facility such as an incineration facility, and particularly to dioxins, heavy metals, polychlorobiphenyl (hereinafter PC).
Abbreviated as B), etc., harmful substances such as asbestos and freon, or a large amount of waste oil, flammable gas, hazardous substances such as strong acid / strong alkaline substances, etc.

[0002]

2. Description of the Related Art Conventionally, when dismantling an incinerator, a method of dismantling the electric equipment such as a chimney or an electrostatic precipitator by laying it down,
There are various methods, such as a method of disassembling while cutting into short pieces, and a method of sequentially disassembling from the top to the bottom without laying the chimney on its side.

[0003]

However, in this conventional method, sufficient consideration should be given to the above-mentioned methods of treating pollutants, harmful substances, and dangerous substances, and the classification of dismantled waste generated by dismantling. It has not been. Therefore, when dismantling a waste treatment facility that handles pollutants, toxic substances, and dangerous substances, the pollutants, toxic substances, and dangerous substances still remain in the incineration facility.
There is a problem that a worker may cause a health hazard due to a dangerous substance, or a pollutant, a harmful substance, or a dangerous substance may be scattered or penetrated into the surroundings to pollute the surrounding environment. In addition, there is a risk of secondary contamination during transportation of dismantled waste generated by dismantling.

The object of the present invention is to solve the above-mentioned drawbacks of the prior art, to cause a health hazard to workers due to pollutants, harmful substances and dangerous substances, and to prevent pollutants, harmful substances and dangerous substances from surrounding. An object of the present invention is to provide a dismantling system for waste treatment equipment that does not scatter or permeate to contaminate the surrounding environment.

[0005]

In order to achieve the above-mentioned object, the first means of the present invention is to provide a state of contamination by pollutants (for example, dioxins, heavy metals, etc.) of the target equipment to be dismantled, in the target equipment. Hazardous substances (eg asbestos, P
Based on the results of the preliminary survey process, which preliminarily surveys facilities and equipment that use CB, etc., and locations with dangerous substances (large amounts of waste oil, flammable gases, strong acids, strong alkaline substances, etc.) Based on the results of the preceding survey and the pollutant removal process in which the pollutant is removed and the removed pollutant is hermetically stored. After removing from the equipment, the removal / separation process to separate those equipments and devices and hazardous materials, the dismantling process to dismantle the target equipment, and the dismantled waste generated by the disassembly according to the contamination status and form, Dismantling waste separation process to be stored and separation and disposal of the dismantled waste that is recycled or finally disposed of according to the contamination status and type It is characterized in that and a degree.

According to a second aspect of the present invention, in the first aspect, before the pollutant removal step, an earth pool is provided so as to surround the target equipment, and the earth pool and the temporary or existing waste water treatment are provided. The plant is connected, the water used in the pollutant removal step is stored in the soil pool, and the stored water is treated in the wastewater treatment plant and reused.

The third means of the present invention is the steel member separated in the disassembling waste separation step in the first means, wherein the surface is made of an anti-scattering agent made of, for example, resin emulsion after removal of contaminants. It is characterized in that it is transported to a melting treatment site for recycling, such as a blast furnace, in a state in which it has been subjected to anti-scattering treatment.

A fourth means of the present invention is the first means according to the first means, wherein, for example, an ash pit, a dust pit, a bell pit (ash conveyor), or a basement that can store sewage and massive pollutants in the equipment to be dismantled. The equipment such as the open space is used as a storage and sedimentation tank for wastewater generated by water sprinkling and washing, the wastewater stored in the storage sedimentation tank is sent to the wastewater treatment process, and the stored sediment is treated in the granular and powder treatment process. To the equipment that can store the sewage and lumped pollutants, then put the lumped pollutants and the insolubilization treatment agent to insolubilize the lumped pollutants, remove the treated lumped pollutants, and then remove the equipment. It is characterized by being washed and disassembled.

According to a fifth aspect of the present invention, in the first means, a primary cleaning chamber, a secondary cleaning chamber, and a protective equipment attaching / detaching chamber are provided between the site where the contaminants are removed or dismantled and the undressing chamber of the protective clothing. The worker from the site takes off the protective equipment worn on the primary cleaning room, takes an air shower in the secondary cleaning room, and then wears a face piece, gloves, protective clothing, etc. in the protective equipment attaching / detaching room. It is characterized by undressing.

According to a sixth aspect of the present invention, in the first aspect, the equipment to be disassembled includes a chimney, and an exhaust fan and a dust collector are provided below the chimney before decontaminating or / and dismantling the chimney. A device is provided, and exhaust gas containing dust generated by decontamination and / or demolition is treated by the dust collector.

A seventh means of the present invention is the same as the first means, wherein the target equipment to be disassembled includes a building having internal equipment such as an incinerator, and the exhaust fan before decontaminating and dismantling the internal equipment. A dust collector is installed to dismantle a part of the outer wall of the building for carrying in heavy equipment, carry in the heavy equipment from the dismantled location to dismantle the internal equipment, and include dust inside the building generated by the dismantling. It is characterized in that exhaust gas is subjected to dust collection processing by the dust collection device.

An eighth means of the present invention is characterized in that, in the first means, the waste is stored in a water-permeable storage material such as a bag or a container, temporarily placed as it is, insolubilized, and carried out of the site. It is what

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a schematic plan view of the waste incineration facility to be disassembled according to the embodiment. In the figure, 1 is a garbage pit for containing general waste such as garbage, 2 is an incinerator 1 and 2
a is a garbage inlet of the No. 1 incinerator 2, 3 is a No. 1 multi-cyclone, 4 is a No. 1 chimney, 5 is a No. 2 incinerator, 5
a is a garbage inlet of the No. 2 incinerator 5, 6 is a No. 2 multi-cyclone, 7 is an electrostatic precipitator, 8 is a No. 2 chimney, 9
Is a bell compit that conveys the incinerated ash generated in the No. 1 incinerator 2 and No. 2 incinerator 5 to the ash pit 10, and 11 is a wastewater treatment facility. This wastewater treatment facility 11 has already deteriorated and has no function, and a temporary drainage facility (not shown) is separately provided for dismantling work. Both the No. 1 incinerator 2 and No. 2 incinerator 5 are stoker ovens.

FIG. 1 is a flowchart of the entire dismantling system in a waste incineration facility, and the main points of the overall flow of the system will be briefly described with reference to FIG.

S1: Preliminary investigation As a preceding investigation, the degree of contamination of dioxins and heavy metals in the target equipment to be dismantled is investigated to grasp the contamination status of the entire equipment. Also, asbestos and P in the target facility
Check the locations where electrical products are expected to contain CB. In addition, check the place where a large amount of waste oil, flammable gas, dangerous substances such as strong acid / strong alkaline substance are placed. Dioxins are a general term for polychlorinated dibenzo-dioxins, polychlorinated dibenzofurans and their isomers (including coplanar polychlorinated biphenyls and their isomers). S2: Preparation and notification of dismantling plan Based on the result of the preceding survey, the management classification is determined according to the degree of pollution (contamination level), the removal of pollutants and the dismantling method of equipment are planned, and the relevant places are concerned. Etc. S3: Preparatory work As a preparatory work, a security room will be established, and a temporary dust collector, wastewater treatment plant, pollutant treatment facility, etc. will be installed. S4: Preliminary survey In order to determine the work method, in accordance with the progress of the actual dismantling work, the pollution status due to dioxins and heavy metals will be individually investigated again for each target facility before the start of each process. S5: Pollutant removal work Wet pollutants are removed. The unmanned construction method is used to remove the pollutants on the inner surface of the chimney. Keep the removed contaminants in a closed container. S6: Dismantling work The melting method is not adopted, and it is dismantled by the shearing method using a heavy machine. S7: The dismantled waste generated by the dismantling of the waste is sorted and stored according to the contamination state and form. Wastewater will be reused as wash water or spray water after treatment. S8: Treatment / disposal of waste Waste is recycled or finally disposed of depending on the pollution status and type. When carrying out dismantled waste, carry out secondary pollution prevention processing. Sewage should be properly treated before being discharged into the sewer. S9: Subsequent investigation Investigate the effects of demolition work on workers and the surrounding environment.

Next, the above-mentioned processes will be individually described in detail. (Preliminary investigation) In order to understand the state of contamination of the equipment to be dismantled with dioxins, in the present embodiment, incineration ash of No. 1 incinerator 2 in FIG. 2, 2.2 incineration ash of No. 2 incinerator 5, 3.2 Fly ash in the flue 12 of the No. 5 incinerator 5, 4.1 lower stack of the No. 4 chimney 4, lower deposit of No. 5 No. 8 chimney, and 6.1 of the No. 1 multi-cyclone 3 Fly ash, 7. Fly ash in the electric dust collector 7, 8. Precipitates in the wastewater treatment facility 11 are sampled from 8 locations, the dioxin concentration is measured, and the pollution status due to dioxins is investigated.

The pretreatment for sampling and the analysis method were carried out in accordance with "Method for certifying standards relating to specially controlled general waste and specially controlled waste" (1992). Fig. 3 shows the measurement results (minimum value, median value, maximum value) of the concentration of dioxins adhering to the equipment to be dismantled by the preceding survey and the preliminary survey. As a result of this investigation, the dioxin concentration of the equipment to be dismantled is 0.017 to 19 ng-T.
It was EQ / g.

In addition, the location where asbestos is used in the facility is investigated and confirmed by this preliminary survey. The target site (collection site) of this survey and the survey results are shown below. (Sampling location) (Presence or absence of asbestos) (Remarks) Combustion furnace air side duct no Rock wool Combustion furnace air side duct flange packing Yes: Chrysotile Asbestos cross building outer wall / roof Yes: Chrysotile Slate board Control room floor No P tile Manhole packing of the furnace body Yes: Chrysotile Asbestos Cross Control room indoors and floors No P tile management building ceiling No gypsum board Crane operation room floor No P tile Under furnace casing No rock wool Electrostatic precipitator Piping Yes: Amosite silica Calcium electrostatic precipitator main body No rock wool office ceiling No spray material Toilet ceiling No gypsum board In this preliminary survey, the flange packing of the combustion furnace air side duct underlined, the outer wall / roof of the building, the manhole packing of the furnace body, Asbestos is contained in the piping under the electric dust collector. It is known before the dismantling, and when dismantling, carefully remove the asbestos-containing material so as not to destroy it. In addition, since the electric product containing PCB has been grasped by the preceding survey, the electric product is also removed prior to disassembly.

(Planning of dismantling plan) Based on the measurement result of the concentration of dioxins, the equipment to be dismantled from the first control area (contamination level 1) to the second control area (contamination) related to the selection of protective equipment having a relatively low concentration. Protective equipment that is classified into three levels, Level 2) and third controlled area (contamination level 3), which has a relatively high concentration, and is designated for each controlled area is selected.

As the respiratory protective equipment, a pressure demand type air line mask with a full face mask, a pressure demand type air respirator with a full face mask, an air-tight air-tight garment among chemical protective suits, and a dust mask with integrated protective glasses. Are used. The full-faced face piece is a face piece that an operator wears.

The dismantling plan consists of temporary equipment, removal of pollutants,
The period etc. are specifically planned and decided by dividing into items such as treatment of pollutants, dismantling work, and on-site inspection.

(Preparation work) A security room is provided outside the control area of the equipment to be dismantled, the access of workers to the control area is controlled, and the condition of wearing protective equipment is controlled. Figure 2
6 is a layout view of the security room 30, and the movement of the worker 31 will be described with reference to this drawing. In order for the worker 31 to head from the break room entrance 32 to the site 33 for decontamination or dismantling, first, the work clothes that have been worn in the changing room 35 through the break room 34 are taken off, and underwear for the scene is worn. Next, wear predetermined protective clothing and gloves in the protective clothing room 36, and
The entry is confirmed at 7, and the boots and protective equipment are worn in the protective equipment undressing room 38, pass through the site entrance passage 39, and enter the site 33 through the primary cleaning room 41.

When leaving the site 33, first enter the primary cleaning room 41, take off Tyvek (a disposable paper clothes, which is worn on the chemical protective suit in this embodiment),
Discard in a designated disposal drum. He also wears double gloves, remove the upper gloves, and throw them in a waste drum as well. Then, wash with water from the head in a water shower while wearing respiratory protection. Then wash the boots with a shoe cleaner to remove any deposits on the soles.

In this state, the secondary cleaning chamber 42 is entered. A shower gate 40 for spraying water is provided in front of the secondary cleaning chamber 42. The switch is turned on in the secondary cleaning chamber 42, and the dust adhered to the body is blown off by the air flow (air shower). Here, face masks, gloves, and protective clothing are worn, and no worker's body is exposed.

When the air shower is operated for a certain period of time and finished, the air shower passes over the wet mat of the auxiliary decontamination chamber 43 and enters the protective equipment dressing chamber 38. Remove the face piece, gloves and boots here,
Take off chemical protective clothing. Gloves are discarded and facepiece and chemical protective suit are cleaned and dried by armor maintenance personnel. The worker further removes the underwear and cleans the whole body in the warm water shower room 44. This is because a large amount of sweat is caused by wearing the chemical protective suit. When finished, change to work clothes and rest in the break room 34.

Since the disposable clothing (Tyvek) is put on the protective clothing during the work, the amount of contaminants, ash, dust, etc. attached to the protective clothing on the lower side is extremely small. In addition, as soon as the disposable clothes (Tyvek) are removed from the dismantling site 33, they are thrown away in the primary cleaning chamber 41, stored and disposed of, so that contaminants, ash, dust, etc. are removed from the secondary cleaning chamber 4.
It is very unlikely to be brought into the room after 2 and is clean.

As shown in FIG. 26, between the site 33 and the protective equipment undressing room 38, the undressing of the disposable clothes and protective gloves worn on the protective clothing, the helmet, the protective clothing,
A primary cleaning room 41 for cleaning boots, a secondary cleaning room 42 for removing pollutants from the whole body, and an auxiliary decontamination room 43 for removing residual pollutants are connected in series to remove protective equipment. It is possible to reduce carry-in of contaminants and the like into the chamber 38 as much as possible. Further, by completely partitioning the route of the primary cleaning chamber 41, the secondary cleaning chamber 42, the auxiliary decontamination chamber 43 and the site entrance passage 39 by a wall, the invasion of contaminants and the like into the protective equipment dressing chamber 38 is further reduced. can do.

FIG. 4 (a) shows the surroundings of the lower part of the chimneys 4, 8 to be disassembled, the electrostatic precipitator 7, and the temporary contaminant cleaning chamber.
As shown in (b), the soil pool 13 is surrounded, and the decontamination water 14 used for decontamination is stored in a recess such as a drainage basin 45 in the soil pool 13, and a submersible pump 46 is provided for temporary or existing wastewater treatment plant. (Not shown) for processing. By thus providing the soil pool 13 and the wastewater treatment plant, it is possible to recycle the water to reduce the amount of clean water used, and to treat the water to the drainage standard value or less and to discharge it to the sewer. A water retaining mat 47 is laid inside the soil pool 13 to keep it moist and prevent it from drying.

In addition to this, in the preparatory work, a dust collecting device for treating exhaust gas containing dust emitted from the controlled area to maintain a working environment, and a contaminant solidifying device are also installed.

An example of preparatory work for each dismantling target facility is as follows. 1. Incinerator and in-building furnace chamber exhaust system, water sprinkling equipment, high-pressure washing equipment, washing space, broadcasting equipment, lighting equipment, etc. 2. Electric dust collector Dirt pool, curing to prevent scattering to adjacent facilities, etc. 3. High-pressure flue cleaning equipment, cleaning space, dirt pool, etc. 4. Chimney dust collector, dirt pool, protection against scattering to adjacent facilities, etc. 5. Entire building (including operation room and living room) Removal of electricity and equipment, disassembly and separation of interior materials, etc. 6. Induction blower room high-pressure cleaning equipment, cleaning space, etc. 7. Ash pit, ash conveyor, wastewater treatment facility Steel tank for storing clear water, etc. 8. Others Wastewater treatment plant, piping to wastewater storage tank, solidification device for pollutants, etc. (pollutant removal work) A flowchart of pollutant removal work is shown in Fig. 5. As shown in the figure, a preparatory work is performed in S1. As preparatory work, for example, temporary work of the work scaffold, work of forming an opening in the peripheral wall of the incinerator so that a worker can enter the incinerator and work, and temporarily install the work scaffold.

In the rough removal of pollutants in S2, the target area from which the pollutants are to be removed is wetted with water spray or water spray so that dust or the like does not scatter, and the remaining pollutants such as ash. Clean with vacuum and tools. For the removal of pollutants in S3, according to the investigation by the person in charge of dioxins work, wet blasting, high pressure water cleaning, ultra high pressure blasting, ultra high pressure water cleaning,
Appropriately adopt cutting by automatic internal cutting machine, chemical decontamination, etc.

Next, the result of pollutant removal is confirmed in the presence of the person in charge of dioxin work (S4),
After confirmation, move to the next step, that is, move to another place (S
5), the process from S1 is repeated.

The removed pollutants are hermetically stored in S6 and treated in S7. Further, the cleaning water used for removing contaminants is subjected to wastewater treatment and reuse in S8, the water decontaminated after the dismantling is purified in S9, and discharged to the sewer. Note that S6 to 9 will be described later.

FIG. 6 is a diagram summarizing an example of the decontamination method for each facility and the subsequent dismantling method. The decontamination level (L
In v), the decontamination is decided until the surface condition after decontamination becomes as follows. Decontamination level (Lv) 1: Surface state to the extent that deposits on the target surface are removed. Decontamination level (Lv) 2: Surface state to the extent that deposits and scales on the target surface do not peel off. Decontamination level (Lv) 3: A state where the surface texture of the object is completely exposed. As shown in this figure, the decontamination method and decontamination level (Lv) are predetermined for each object (facility), and the higher the degree of contamination (object), the higher the decontamination level (Lv) is set. ing.

FIG. 7 is a diagram summarizing decontamination methods for objects classified by decontamination level (Lv). Figure 8
FIG. 1 is a diagram summarizing the outline and application range of the wet blast method, high-pressure water cleaning method, and chemical decontamination method and their advantages.
As shown in these figures, a decontamination method suitable for the decontamination target is selected.

An example of pollutant removal for each equipment to be dismantled is as follows. 1. Incinerators and in-building furnace chambers Sprinkle water to clean residual ash while keeping it wet, carry it out of the furnace, store residual ash in a closed container, and clean the furnace chamber. Next, the deposits on the furnace wall are removed by ultra-high pressure blasting (inner surface) and high-pressure water cleaning (outer surface), and the removed material on the furnace wall is stored in a closed container. 2. After sprinkling water on the chimney, clean the residue left at the bottom of the chimney, carry it out, and store it in an airtight container.After that, sprinkle water on the inner surface of the chimney to cut and remove internal contaminants with an internal cutting machine, and seal the removed material. Store in a container. 3. After cleaning the dust while sprinkling water in the induction blower room, wash the inside of the flue with high-pressure water and store the removed material in a closed container. 4. Ash pit, ash conveyor, wastewater treatment facility The ash pit is used as a tank for storing and depositing wastewater, and after separating and separating the supernatant water, the supernatant water is treated and the precipitate is stored in a closed container. The ash pit and ash conveyor remove superficial surface pollutants by the ultra-high pressure blast method, and the wastewater treatment equipment removes superficial surface pollutants by the wet blast method and stores the removed material in a closed container.

(Disassembly work) FIG. 9 is a flowchart of the disassembly work. Before starting dismantling work, PCB-containing electrical products (fluorescent lamps, mercury-vapor ballasts, etc.) confirmed in the preceding survey, and asbestos-containing components (flange packing on the air side of the combustion furnace, manhole packing on the furnace body, under the electrostatic precipitator) After removing the pipes, etc. in advance (removing and storing with equipment compatible with the third management category), the dioxin work manager confirms the removal of pollutants from the equipment such as the combustion furnace (S1). Next, in S2, the slate plate of the outer wall of the building and the roof of the building are manually disassembled and separated. This slate plate contains asbestos, and if mechanically destroyed, a large amount of dust containing asbestos may be generated, so the slate plates are manually removed one by one.

Then, in S3, the incinerator is disassembled. Decontamination has been confirmed, but in consideration of the possibility that a small amount of dioxins will be gasified by heating, the melting method involving heat is not used for dismantling work, and all dismantling work is done with heavy equipment (nibbler). Perform (see FIG. 6). The remaining building is dismantled in S4, and the last remaining underground dust pit is covered with steel sheet piles, and then the concrete structure is dug up. The dismantled waste discharged along with the dismantling work is separated into steel materials and refractory materials according to a predetermined dismantling procedure in S5, and is disposed as reused materials and wastes (S6, S7). In principle, the dismantling work proceeds while sprinkling water to prevent the scattering of dust, but the dismantling material may be disassembled by covering it with a water-retaining mat that contains water.

(Separation, Treatment / Disposal of Dismantled Waste) As described above, the dismantled waste discharged along with the dismantling work is sorted, stored, recycled or finally disposed according to the pollution situation and form. An example of the classification of dismantled waste for each target facility is as follows. Demolition wastes underlined indicate pollutants.

1. Incinerators and in-building furnace chamber bricks , residual ash , steel members , drainage , washed bottles and cans, etc. 2. Electric dust collector Steel parts , asbestos , fly ash , drainage , rock wool, etc. 3. Flue steel components , drainage , rock wool, etc. 4. Chimney bricks , inner concrete , drainage , outer concrete, rebar, etc. 5. 5. Whole building slate plates other than the above 1, PCB-containing electrical products , concrete, steel frames, interior materials, etc. Induction blower room steel members , drainage , concrete, etc. 7. Ash pits, ash conveyors, wastewater treatment facilities Inside concrete , drainage , sediment , steel members , outside concrete, etc.Among the above-mentioned pollutants, massive contaminants such as refractory bricks and refractory materials are insolubilized by heavy metal fixatives (chelates). Process). Powder and granular pollutants such as ash and sludge are insolubilized (solidified) by a heavy metal fixing agent used with cement.
Do.

The contaminated steel member discharged from the electrostatic precipitator or drainage facility is coated with an anti-scattering agent (resin emulsion) on the surface of the steel member to prevent secondary contamination after the decontamination process. Then, put it in a blast furnace and treat it as a useful substance (melting process). Decontamination treatment removes almost completely the contaminants adhering to the surface of steel members, but if a small amount of contaminants remains on the surface of steel members, they will be transported to the blast furnace. At this time, it is considered that the pollutants are scattered to cause secondary pollution. Therefore, the entire surface of the steel member is covered with a synthetic resin film to prevent secondary pollution.

FIG. 10 is a flow chart of wastewater treatment of the temporary wastewater treatment plant. As shown in the figure, in S1, equipment and equipment necessary for wastewater treatment such as steel tanks, chemicals, analysis equipment, sand filtration equipment, and activated carbon filtration equipment are brought in and assembled, and a wastewater treatment plant is prepared. In S2, the existing ash pit and accumulated water in the wastewater treatment tank are treated and the damage situation is investigated. If the damage is not severe, use the ash pit as a storage and sedimentation tank for the wastewater treatment plant. In S3, the sewage discharged by washing is collected in the storage sedimentation tank, and the collected sewage is pumped to a wastewater treatment plant (S4), S5
The waste water is treated at. The effect of this treatment will be confirmed simply by a water quality analysis and a survey of suspended solids (SS).

The quality of sewage is analyzed to determine the amount of chemicals added. In addition, the formulation of the precipitating agent, the flocculant, the heavy metal fixing agent, the reducing agent, etc. is determined according to the pollutant and its concentration. A predetermined chemical is added to the sewage while stirring, and the sewage is allowed to stand still to separate and settle suspended solids and fine particles.

The supernatant water is stored in the tank in S6, and during the dismantling work, the supernatant water is circulated and reused as cleaning water (S
7), cleaning work is performed (S8), and the generated wastewater is S3
Returned to. On the other hand, the fine particles separated and settled in S5 are subjected to sand filtration, dehydrated in S9, and then sent to the powder / particulate contaminant treatment step. After the dismantling work is completed, the supernatant water is transferred to a discharge tank and analyzed for water quality, and it is confirmed that the wastewater standards are satisfied, and then it is discharged to the public sewer.

11 to 15 and FIG. 18 are flowcharts of decontamination / demolition for each target facility. FIG. 11 is a decontamination / disassembly flowchart of the wastewater treatment tank (outdoor facility). In S1, the situation before the work is confirmed, in S2, the sediment in the wastewater treatment tank is collected to grasp the pollution situation due to dioxins and heavy metals (preliminary survey), and in S3, the oxygen and hydrogen sulfide in the tank are checked. Measure the concentration.

In S4, the drainage tank is drained, and the polluted water in the tank is sent to the wastewater treatment step using an underwater pump (S5). At S6, the precipitate in the waste water treatment tank is removed, and the precipitate is sealed and temporarily stored in a drum (S7) and sent to the granular / powdered pollutant treatment step (S8). After removing the precipitate,
At S9, the surface layer of the wastewater treatment tank is washed under high pressure, and the contaminated water that has come out is sent to the wastewater treatment process using an underwater pump (S10).

After cleaning, in S11, it is confirmed that the person in charge of work removes the contaminants, and in S12, the heavy equipment (nibbler) is used to dismantle and remove the wastewater treatment tank. Scrap processing (melting processing) is performed as a used material.

12 and 13 are flowcharts of decontamination / demolition of the ash pit (outdoor facility). S1 confirms the situation before the work, and S2 collects the precipitate in the ash pit to check the pollution status due to dioxins and heavy metals (preliminary investigation). Also, in S3, check the oxygen and hydrogen sulfide in the ash pit. Measure the concentration.

The water in the ash pit is drained in S4, and the contaminated water is sent to the wastewater treatment process using an underwater pump (S
5). At S6, the precipitate in the ash pit is removed, and the precipitate is sealed and temporarily stored in a drum (S7) and sent to the granular / powdered pollutant treatment step (S8). After removing the precipitate, the ash adhering to the wall of the ash pit is washed (cut) and washed in S9, and the resulting precipitate is sealed and temporarily stored in a drum can (S1
0), and send to the granular / powdered pollutant processing step (S11).

After the cleaning, in S12, the damaged state of the ash pit and the condition of the piping are examined to determine whether or not the ash pit can be utilized as a storage / sedimentation tank for wastewater generated by water spraying or high-pressure cleaning. If it can be used, it is used as a storage tank to store the sewage produced by washing and sprinkling in each process (S1
3) Send the stored polluted water to the wastewater treatment process (S1)
4). At S15, the precipitate in the storage tank is removed, and the precipitate is stored in a closed primary storage (S16) and sent to the granular / powdered pollutant treatment step (S17).

At S18, the wall surface layer is washed, and the polluted water discharged there is sent to the wastewater treatment process (S19). This time, the ash pit is used as a chemical treatment tank for the lumpy pollutant treatment step and insolubilized in the chemical treatment tank. A treatment agent is added and insolubilization treatment of lumped pollutants is performed (S20). The bulk pollutants and the chemicals that have been treated in S21 are removed from the treatment tank, and they are treated as waste in S22.

After the removal, the surface layer of the ash pit is washed with high pressure in S23, and the polluted water discharged is sent to the wastewater treatment process (S2
4) After cleaning, the worker in charge confirms the decontamination in S25, the ash pit is dismantled / removed by the heavy machine (nibbler) in S26, and the dismantled waste generated by the dismantling is treated as waste (S27).

FIG. 14 is a decontamination / disassembly flow chart of the combustion furnace and the furnace room (indoor facility). The situation before work is checked in S1, the temporary building (security room) is installed in S2, and the opening in the combustion furnace wall where workers can go in and out by ultra-high pressure water is formed and installed in S3, and the oxygen in the combustion furnace is set. And the concentration of hydrogen sulfide are measured, and the residual ash and the deposits on the furnace wall are collected in S4 to understand the pollution status due to dioxins and heavy metals (preliminary survey).

At step S5, a scaffold is installed in the furnace chamber for cleaning with high-pressure water. At step S6, a simple scaffold is installed in the furnace, and water supply equipment, broadcasting equipment, lighting equipment, etc. are installed.
In step S7, residual ash and the like in the furnace are removed by cleaning, and in step S8, deposits on the furnace wall are removed by high pressure cleaning. In S9, asbestos-containing members such as the combustion furnace air side duct flange packing attached to the combustion furnace and the manhole packing of the furnace body are removed and stored.

After cleaning, the work manager confirms the decontamination in S10. In S11, a part of the outer wall of the building is dismantled with a heavy machine for carrying in the heavy machine and unloading the components of the combustion furnace. In S12, the heavy machine is dismantled. . Then, in S13, the refractory bricks in the furnace are removed and carried out, and in S14, ducts such as flues are washed under high pressure, and after confirmation by the dioxin work manager, S1
In step 5, the steel member is dismantled and carried out, and a steel member or the like is coated with a resin emulsion on its surface to prevent scattering, and in step S16, the waste is separated into a reusable material and a waste to be processed and disposed of.

On the other hand, the pollutants removed in S5, S7, S8, S13, etc. are sealed and temporarily stored in S17, and sent to the granular / powder pollutant treatment step and the block pollutant treatment step depending on the form of the pollutant. After the treatment, it is disposed of at the management-type disposal site (S19).

FIG. 15 is a flowchart of decontamination / disassembly of a chimney (outdoor facility). In S1, the status is checked before the work, and in S2, the residual ash in the chimney is collected and the pollution status of dioxins and heavy metals is grasped (preliminary survey).
In S3, the remnants in the chimney are cleaned, and in S4, the work manager confirms the decontamination.

In the temporary construction of S5, a dust collector is installed, an earth pool is installed outside the base of the chimney, a water collecting basin for water collection is installed, and an enclosure curing for dismantling debris scattering is installed. In S6, the refractory bricks on the lower side inside the chimney are scraped off by a high-pressure washing or cutting machine, and the deposits on the concrete surface exposed on the inner surface on the upper side of the chimney are removed by a high-pressure washing or cutting machine.

In S7, the chimney is dismantled by using the heavy equipment and the crane together, in S8, the dismantled material is separated and collected, and in S9, the dismantled material is sampled to analyze the contamination state, and the analyzed value is below the standard value. For example, it is recycled (recycled) or transported to a disposal site (S10).

The contaminated demolition material is classified into lumped pollutants and powder / granular pollutants according to the form thereof and temporarily stored (S11), and sent to the lump pollutant treatment step and the grain / powdered pollutant treatment step ( S12), and after processing, dispose at the management-type disposal site (S13).

FIG. 16 is a diagram showing how contaminants inside the chimney are removed. The chimney 4 (8) is entirely of concrete 1
5, the refractory brick 16 is installed on the inner surface of the lower side thereof. At the time of decontamination, the crane 17 equipped with the boom 18 is brought into the vicinity of the chimney 4 (8), and the automatic internal cutting machine 19 attached to the tip of the boom 18 is used for the chimney 4 (8).
Insert from the top opening. Then, the cutting machine 19 is gradually lowered while being operated to mechanically remove the deposits adhering to the concrete surface and further scrape off the refractory bricks 16. It is also possible to wash the concrete surface and scrape off the refractory bricks 16 by washing with high pressure water instead of the automatic inner surface cutting machine 19. Reference numeral 20 is a compressor used at that time.

FIG. 17 is a diagram showing how the chimney is disassembled. The attachment pressing machine 25 for dismantling the stack and the heavy machine 21 for dismantling are connected by a hydraulic hose 22, and a watering hose 23 is bound to the hydraulic hose 22. As shown in the figure, the press 25 is hung by the crane 24 on the upper part of the chimney 4 (8), and is squeezed and disassembled in order from the uppermost tip of the chimney 4 (8) to the lower part.
During squeezing and demolition, water is sprayed from the upper part by the watering hose 23, and at the same time, sufficient water is sprayed from the ground. The water used for sprinkling and cleaning is stored in the dirt pool installed around the lower part of the chimney 4 (8) (see FIG. 4).

The chimney dismantling material is not dropped on the ground as it is,
Disassemble into small pieces and drop them on the ground. When the chimney 4 (8) is dismantled to a predetermined height, the compressor 25 is directly attached to the heavy machine 21 and the dismantling work is continued. Although not shown, as a measure for preventing dismantling waste from scattering, a frame curing sheet is hung by a crane at a position separated from the chimney 4 (8) by a predetermined distance, and the curing sheet is lowered as the disassembling progresses.

FIG. 27 is a diagram showing how exhaust gas containing dust is treated at the time of decontaminating a chimney or (and) dismantling it. The duct 48, the exhaust fan 49, and the dust collector 50 are installed at the chimney inlet provided in the lower part of the chimney 4 (8) at the stage of the above-mentioned preparatory work. And chimney 4
When the inner surface of (8) is decontaminated, the exhaust fan 49 is driven to make the inside of the chimney 4 (8) a negative pressure, and the dust and the like generated by dismantling are sucked by the exhaust fan 49 to collect the dust. To collect. By thus using the chimney 4 (8) to collect negative pressure inside the chimney 4 (8), dust is less scattered around the chimney 4 (8) and a good working environment is maintained. The dust collection efficiency can be improved.

As shown in FIG. 2, the duct 48, the exhaust fan 49, and the dust collector 50 are also installed in the furnace chamber 51, and exhaust gas containing dust is also generated when dismantling each equipment in the furnace chamber 51. Can be processed. Chimney 4 like this
By using (8) or the outer wall of the furnace chamber 51 as a substitute for curing, it is not necessary to install the curing, and it is possible to reduce the construction period and cost.

FIG. 18 is a flow chart of demolishing a building. In S1, electrical products such as fluorescent lamp ballasts and mercury lamps using PCBs are removed, and in S2, the electrical and facility equipment associated with the dismantling of gypsum board is removed.
Dismantling the gypsum board while sprinkling with water at 3.

In S4, the remaining interiors such as light iron, wood, and sash are dismantled, in S5, the interior dismantling material is divided into light iron, wood, sash, etc., and in S6, the glass is carried out to the outside, and then in S7. The building is dismantled while sprinkling water, and the pressed concrete pieces and reinforcing bars are carried out and recycled (S8, S9). When the building is dismantled in S7, since the slate plate contains asbestos, the slate plate is first manually removed and separated, and then the dismantling work by pressing using a heavy machine is started.

19 to 22 are diagrams showing the internal equipment such as the incinerator 2 (5) and the state of dismantling the building.
FIG. 19 is a diagram showing a state in which internal equipment such as the incinerator 2 (5) installed in the building is disassembled by the heavy equipment 21.
First, a part of the building outer wall was dismantled with heavy equipment for carrying in heavy equipment and for carrying out combustion furnace components, leaving the other building outer walls as they were, and putting the heavy equipment 21 in the building to incinerate 2 (5).
Dismantle internal equipment such as. At this time, the outer wall of the building is used for curing, so there is no need for special curing. As shown in FIG. 2, the dust generated during dismantling is exhaust fan 49.
In addition, dust is collected and processed by the dust collector 50. 20
It is a figure which shows a mode that the steel frame of the roof 27 of a building is disassembled with the heavy equipment 21. FIG. 21 is a diagram showing how the heavy equipment 21 dismantles the other wall portion 28 of the building excluding the slate plate. Figure 2
2 is the underground foundation around the dust pit of the building and the underground beam 29
It is a figure which shows a mode that an edge is cut and it disassembles.

FIGS. 28 (a) to 28 (c) are views showing a process for treating massive pollutants. For example, as shown in FIG. 2A, the lumped pollutant 52 formed by decontamination, which is made up of lumpy bricks or concrete glass to which pollutants are attached, is a durable flexible container pack 5 made of synthetic resin fiber or the like.
3 is packed in a bag and transported by a forklift onto the soil concrete 54 in the storage yard. As shown in FIG. 3B, the circumference of the storage yard is surrounded by a single pipe 55 and a sheet 56, and a curing sheet 57 is hung on the stacked flexible container pack 53 and temporarily placed.

As shown in FIG. 7C, the insolubilization treatment liquid 59 is put in the chemical treatment tank 58 utilizing the existing ash pit,
The block contaminant 52 is immersed in the insolubilization treatment liquid 59 together with the flexible container pack 53. The insolubilization treatment liquid 59 is added to the block contaminant 5.
2 is sufficiently infiltrated to carry out the insolubilization treatment, and after the treatment, the lump contaminant 52 taken out from the chemical treatment tank 58 together with the flexible container pack 53 is transported to the controlled final disposal site for disposal.

In this manner, the lumped pollutant is packed in a bag, and then transported to a storage yard, temporarily placed in the storage yard, transported to a chemical treatment tank 58, insolubilized, and transported to a final control landfill site. By doing so, it is not necessary to refill the lumped pollutants, and the secondary pollution can be effectively prevented.

In the embodiment of the present invention, the concentrations of dioxins, oxygen and hydrogen sulfide in the work environment before the start of dismantling work, during the pollutant removal work and during the dismantling work were investigated.
As a result of this investigation, the values of oxygen and hydrogen sulfide are not the values that matter, but the results of measurement of dioxins are shown in FIG.
3 shows. The dioxin concentration in the figure is the total value of gaseous and particulate form.

The survey method is as follows. 1. Sampling locations: 7 locations (No. 1 combustion furnace, No. 2 combustion furnace, furnace room, No. 1 multi-cyclone, No. 1 furnace chimney,
No. 2 chimney, electric dust collector) 2. Sampling method: Implemented with high volume air sampler 3. Sample quantity: 13 samples (3 samples before work, 6 samples during decontamination, 4 samples during disassembly) Pretreatment of sample: “Measures for prevention of health problems caused by dioxins” (1999, 68th
No. 8), "Atmospheric environment survey manual for dioxins" (2000 Environment Agency) Sample analysis method: “Measures to prevent health problems caused by dioxins” (1999 6th
No. 88), "Atmospheric environment survey manual for dioxins" (2000 Environment Agency) This survey result, 150pg-TEQ near the chimney during decontamination
A value of / m ³ was measured because this was due to the effect of bricks falling inside the chimney during the operation of the automatic internal cutting machine. However, the decontamination work is a remote operation and the sampling is unattended, so there is no impact on the workers.

(Post-Examination Survey) In order to understand the effects of dioxins on the human body and surrounding environment due to dismantling work, a survey of blood dioxins concentration for dismantling workers and the concentration of dioxins in soil at four sites on the site of dismantling work A survey was conducted.

FIG. 24 is a diagram showing the results of investigation of blood dioxin concentrations. The survey method is as follows. 1. Sampling place: Public hospital 2. Sampling method: Performed by collecting 200 cc of blood per worker. Sample quantity: 190 samples (97 samples before work,
(10 samples during work, 83 samples after work) 4. Sample pretreatment: "Temporary Manual for Measuring Dioxins in Blood" (December 22, 2000, Ministry of Health and Welfare)
Compliant with 5. Sample analysis method: Conforms to the “Temporary Manual for Measuring Dioxins in Blood” (December 22, 2000, Ministry of Health and Welfare) As a result, as shown in the figure, the concentration of dioxins in blood of workers is remarkable before and after work. No increase was observed, but rather it tended to decrease after the work. It should be noted that the range of blood dioxin concentrations of people living in general environmental areas (areas away from waste incineration facilities) announced (November 24, 2000 AD) is 13-68 pg-
TEQ / g-fat, median is 24 pg-TEQ / g-
Since it is fat, it can be determined that there is no effect on the human body due to dismantling work.

Here, FIG. 25 is a diagram showing the results of investigation of the concentration of dioxins in soil. The survey method is as follows. 1. Sampling places: 4 sites on the site of the demolition work site of the garbage incineration facility (selected in the northeast, northwest, southeast, southwest corners in consideration of wind direction) 2. Sample quantity: 8 samples (4 samples before work, 4 samples after work) 3. Sample pretreatment: Soxhlet extraction of dioxins contained in soil and measurement with a high-resolution gas chromatography mass spectrometer (Environment Agency Notification No. 68)
Conforms to December 27, 1999) 4. Sample analysis method: Soxhlet extraction of dioxins contained in soil and measurement with a high-resolution gas chromatography mass spectrometer (Environmental Agency Notification No. 68, December 27, 1999) As shown in this figure , 1.5 to 15 pg-TE before work
Q / g, 3.0-12 pg-TEQ / g after work, showing no significant increase in the concentration of dioxins in soil before and after work. The dioxin concentrations in the soil before and after the work were all below the environmental standard of 1000 pg-TEQ / g, and it can be concluded that there was no dioxin contamination in the surrounding environment.

In the above-mentioned embodiment, the case of the waste combustion equipment was explained as the waste treatment equipment, but the present invention is not limited to this, and for example, sewage treatment equipment, ash stockyard, RDF manufacturing equipment, etc. It can also be applied to other waste treatment facilities.

In the above-mentioned embodiment, the case where the members using PCBs and asbestos are grasped by the preliminary investigation and they are removed from the equipment before the dismantling has been explained. In addition to this, for example, a large amount of waste oil, flammability Similarly, in the case of dangerous substances such as gas and strong acid / alkaline substances, it is possible to eliminate the harmful effects of dangerous substances by grasping them in the preliminary survey and removing them from the equipment before this dismantling.

[0079]

The present invention (first means) according to claim 1 is configured as described above, and the pollutant can be removed by investigating the pollution status of the target equipment in advance by the preliminary investigation. In addition, it is possible to properly and efficiently process and dispose of pollutants and wastes generated by dismantling work.

Also, in the preceding survey, the equipment and devices containing harmful substances in advance and the dangerous goods are removed from the equipment to be dismantled, and by separating them, the scattering and permeation of the harmful substances and dangerous materials are surely prevented. It is possible to prevent workers from causing health problems and polluting the surrounding environment.

The present invention according to claim 2 (the second means) is configured as described above, the water can be effectively used, and the amount of clean water used can be significantly reduced.

The present invention (third means) described in claim 3 is configured as described above and can effectively prevent secondary contamination.

The present invention (fourth means) described in claim 4 has the above-mentioned constitution, and the existing equipment to be finally dismantled is effective as a storage sedimentation tank and a contaminant insolubilization treatment tank. It can be used and there is no need to newly install a storage sedimentation tank and an insolubilization treatment tank, which can reduce costs and shorten the dismantling period.

The present invention according to claim 5 (fifth means) is configured as described above, and a secondary cleaning chamber (air shower chamber) separates a contaminated area and a non-contaminated area, and the secondary cleaning is performed. Since the worker's skin is not exposed up to the room (air shower room), the worker's health is not hindered by harmful substances and pollutants.

The present invention according to claim 6 (sixth means) has the above-mentioned structure, and dust and the like are less scattered around the chimney, and the dust collection efficiency can be improved. .

The present invention according to claim 7 (seventh means) is configured as described above, and the outer wall of the building can be used as curing when dismantling the internal equipment of the building, so it is necessary to perform curing again. Therefore, the cost and the dismantling period can be shortened.

The present invention according to claim 8 (eighth means) has the constitution as described above, and it is possible to temporarily put the waste, insolubilize it, and carry it out of the site without refilling the waste. It has features such as preventing secondary pollution and improving work efficiency.

[Brief description of drawings]

FIG. 1 is a flowchart of an entire dismantling system in a waste incineration facility according to an embodiment of the present invention.

FIG. 2 is a schematic plan view of the waste incineration facility to be disassembled according to the embodiment of the present invention.

FIG. 3 is a diagram showing the results of investigation of the concentration of dioxins adhering to the equipment to be dismantled.

FIG. 4 is a partial cross-sectional view showing an earth pool.

FIG. 5 is a flowchart of pollutant removal work.

FIG. 6 is a diagram summarizing an example of a decontamination method for each dismantling target facility and a subsequent dismantling method.

FIG. 7 is a diagram summarizing decontamination methods for objects classified by decontamination level.

FIG. 8 is a diagram summarizing the outline and application range of the wet blast method, high-pressure water cleaning method, and chemical decontamination method and their advantages.

FIG. 9 is a flowchart of dismantling work.

FIG. 10 is a flowchart of wastewater treatment.

FIG. 11 is a decontamination / disassembly flow chart of the wastewater treatment tank.

FIG. 12 is a decontamination / disassembly flow chart of an ash pit.

FIG. 13 is a flowchart of decontamination / disassembly of an ash pit.

FIG. 14 is a decontamination / disassembly flow chart of a combustion furnace and a furnace chamber.

FIG. 15 is a flowchart of decontamination / disassembly of a chimney.

FIG. 16 is a diagram showing how contaminants inside the chimney are removed.

FIG. 17 is a diagram showing how the chimney is disassembled.

FIG. 18 is a flowchart of dismantling a building.

FIG. 19 is a diagram showing a state in which internal equipment installed in a building is disassembled by a heavy machine.

FIG. 20 is a diagram showing a manner in which a steel frame of a roof of a building is disassembled by a heavy machine.

FIG. 21 is a diagram showing a state in which the wall portion of the building excluding the slate plate is disassembled by a heavy machine.

FIG. 22 is a diagram showing a state in which an underground foundation and an underground girder of a building are cut off and disassembled.

FIG. 23 is a diagram showing the measurement results of the concentration of dioxins in the work environment.

FIG. 24 is a diagram showing the results of investigations on the concentration of dioxins in blood.

FIG. 25 is a diagram showing the results of investigation of the concentration of dioxins in soil.

FIG. 26 is a layout view of a security room.

FIG. 27 is a diagram showing how exhaust gas containing dust is treated when dismantling a stack.

FIG. 28 is a diagram showing a process for treating massive pollutants.

[Explanation of symbols] 1 garbage pit 2 No. 1 incinerator Multi Cyclone for No. 1 Reactor 4 Chimney for No. 1 furnace 52 No. 2 incinerator Multi Cyclone for No. 2 Reactor 7 Electric dust collector Chimney for No. 2 furnace 9 Bell Compit 10 ash pit 11 Wastewater treatment facility 12 flue 13 dirt pool 14 Decontamination water 15 concrete 16 Fire brick 17 cranes 18 boom 19 cutting machine 20 compressor 21 Heavy equipment for dismantling 22 Hydraulic hose 23 Watering hose 24 cranes 25 press 26 Internal equipment 27 roof 28 Wall 29 Underground foundation and underground beams 30 security room 31 worker 32 Rest room entrance 33 On-site 34 Rest room 35 changing room 36 Protective clothing room 37 anteroom 38 Protective equipment changing room 39 Field entrance passage 40 shower gate 41 Primary cleaning room 42 Secondary cleaning room 43 Auxiliary decontamination room 44 Hot water shower room 45 drainage box 46 Submersible Pump 47 Water retention mat 48 ducts 49 Exhaust fan 50 dust collector 51 furnace room 52 Bulk Pollutants 53 Flexible Container Pack 54 dirt concrete 55 single pipe 56 seats 57 Curing sheet 58 Chemical treatment tank 59 Insolubilization treatment liquid

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shigeto Fujiwara             Babcock Hitachi 6-9 Takaracho, Kure City, Hiroshima Prefecture             Kure Office Co., Ltd. (72) Inventor Masayuki Sato             Babcock Hitachi 6-9 Takaracho, Kure City, Hiroshima Prefecture             Kure Office Co., Ltd. (72) Minoru Aga, the inventor             2-8 Koraku 2-8, Bunkyo-ku, Tokyo Goyoken             Inside the corporation (72) Inventor Yosuke Mori             2-8 Koraku 2-8, Bunkyo-ku, Tokyo Goyoken             Inside the corporation (72) Inventor Bunsuke Tokuyama             Tochigi Prefecture Nasu-gun Nishi-Nasu-cho 4 Ward-cho 1534-5             Environmental Engineering Laboratory, Yo Construction Co., Ltd. F-term (reference) 2E176 AA13 DD61                 3K061 QC22                 4D004 AA50 CA02 CA07 CA12 CA40                       DA17

Claims (8)

[Claims] 1. A preliminary investigation process for preliminarily investigating a pollution situation of a target facility to be dismantled by a pollutant, a facility or equipment using a harmful substance in the target facility, and a place where a dangerous substance is present, and the preceding survey. Based on the result of the above, the pollutant removal process of removing the pollutant and storing the removed pollutant in a closed manner, and based on the results of the preceding survey, the facilities and equipment that use the harmful substance and dangerous goods Of the target equipment to be dismantled, and the removal / separation process to separate those equipments and devices and dangerous substances, the dismantling process to dismantle the target equipment after that, and the dismantled waste generated by the dismantling to the contamination status and form. Depending on the contamination status and type, the dismantling waste separation process that separates and stores the dismantled waste according to the pollution condition and type. Dismantling system of waste disposal plant, which comprises waste disposal, and a disposal process. 2. The waste treatment facility dismantling system according to claim 1, wherein an earth pool is provided around the target equipment before the pollutant removal step, and the earth pool is connected to a wastewater treatment plant. A dismantling system of a waste treatment facility, wherein the water used in the pollutant removal step is accumulated in the soil pool, and the accumulated water is treated and reused in the wastewater treatment plant. 3. The dismantling system of the waste treatment facility according to claim 1, wherein the steel members sorted in the dismantling waste sorting step are transported to the treatment site after the contaminants are removed and the surface is treated to prevent scattering. Dismantling system for waste treatment equipment characterized by: 4. The dismantling system for waste treatment equipment according to claim 1, wherein the equipment to be dismantled that can store sewage / lumped pollutants is used as a storage / sedimentation tank for sewage generated by sprinkling or washing. , The wastewater stored in the storage sedimentation tank is sent to the wastewater treatment process, the stored sediment is sent to the grain / powder treatment process, and then the wastewater / lumpy pollutant storage facility is insolubilized with the blocky pollutant. A dismantling system for waste treatment equipment, which comprises injecting a treatment agent to insolubilize lumpy pollutants, removing the treated lumpy pollutants, and then cleaning and dismantling the equipment. 5. The dismantling system of the waste treatment facility according to claim 1, wherein a primary cleaning room, a secondary cleaning room, and protective equipment attachment / detachment are provided between a site where the contaminants are removed or dismantled and a dressing room for protective clothing. A room is provided, a worker from the site takes off the protective equipment worn on the primary cleaning room, and after taking an air shower in the secondary cleaning room, a face piece, gloves, in the protective equipment attaching / detaching room,
A dismantling system for waste treatment equipment, which is characterized by undressing protective clothing. 6. The dismantling system for waste treatment equipment according to claim 1, wherein the disassembling target equipment includes a chimney,
Before the decontamination or (and) demolition of the chimney, an exhaust fan and a dust collector are installed at the bottom of the chimney, and the exhaust gas containing dust generated by the decontamination or (and) demolition is treated by the dust collector. Dismantling system of the characteristic waste treatment facility. 7. The dismantling system for waste treatment equipment according to claim 1, wherein the target equipment to be disassembled includes a building having internal equipment, and an exhaust fan and a dust collector before decontaminating and disassembling the internal equipment. A part of the outer wall of the building is dismantled for carrying in heavy equipment, the heavy equipment is carried in from the dismantled location to dismantle the internal equipment, and the exhaust gas containing dust inside the building generated by the dismantling is collected. A dismantling system for waste treatment equipment, which is characterized by collecting dust with a dust device. 8. The waste treatment system according to claim 1, wherein the waste is stored in a water-permeable storage material, temporarily placed as it is, insolubilized, and carried out of the site. Equipment dismantling system.