JP4753091B2 - Volume reduction method of waste - Google Patents

Volume reduction method of waste Download PDF

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JP4753091B2
JP4753091B2 JP2007148045A JP2007148045A JP4753091B2 JP 4753091 B2 JP4753091 B2 JP 4753091B2 JP 2007148045 A JP2007148045 A JP 2007148045A JP 2007148045 A JP2007148045 A JP 2007148045A JP 4753091 B2 JP4753091 B2 JP 4753091B2
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storage bag
bag body
waste
asbestos
opening
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JP2008296195A (en
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幸則 布施
正人 川口
日出男 深井
洋子 名知
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Shimizu Corp
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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    • Y02W30/30Landfill technologies aiming to mitigate methane emissions

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Description

本発明は、例えばアスベストやダイオキシン等の有害物質を含む構造物の解体作業等で発生した廃棄物の減容方法に関する。   The present invention relates to a method for reducing the volume of waste generated, for example, in a dismantling operation of a structure containing harmful substances such as asbestos and dioxin.

従来、住宅などの天井や壁の建築資材には、アスベスト(石綿)が多く使用されていたが、周知のとおりアスベストは非常に微細な繊維形状をなしており、それを人が吸引したときに人体に与える影響が大きく社会的問題となっている。また、近年では、ゴミ処理場の焼却炉などから発生するダイオキシンによる人体への影響が問題となっている現状がある。このような背景から、建築物のアスベスト除去作業や解体作業を行なう際や、ゴミ処理場で使用された焼却炉や煙突などを解体する際には、作業員は防護服等の保護具を着用するとともに、アスベストやダイオキシンを含む粉塵などが周囲に拡散しないように防護シートで作業エリアを隔離するといった対応がなされている。   Conventionally, asbestos (asbestos) has been used in many building materials for ceilings and walls in houses, etc., but as is well known, asbestos has a very fine fiber shape. The impact on the human body is a big social issue. Moreover, in recent years, there is a current situation in which the influence of dioxins generated from an incinerator or the like of a garbage disposal site on the human body has become a problem. Against this background, workers are required to wear protective gear such as protective clothing when performing asbestos removal and demolition work on buildings, and when dismantling incinerators and chimneys used at garbage disposal sites. At the same time, measures are taken to isolate the work area with a protective sheet so that dust containing asbestos and dioxin does not diffuse around.

このように、作業現場から発生したアスベストや一定濃度以上のダイオキシンを含む廃棄物は、特別管理産業廃棄物として取り扱われ、例えば専用の廃棄物処理袋などに収容させて所定の処分場所において廃棄処分されている。
とくに、アスベストを含む廃棄物の場合には、作業現場から処分場所への運搬時等、廃棄処分の過程においてもアスベスト廃棄物の飛散を防止する必要があった。そこで、アスベスト廃棄物を無害化させて処分場へ運搬する方法が、例えば特許文献1に開示されている。
In this way, waste containing asbestos and dioxins at a certain concentration or more generated at the work site is handled as specially managed industrial waste, and is stored in a dedicated waste disposal bag, for example, at a predetermined disposal site. Has been.
In particular, in the case of waste containing asbestos, it was necessary to prevent the asbestos waste from being scattered even during the disposal process, such as when transporting from the work site to the disposal site. Therefore, for example, Patent Document 1 discloses a method of detoxifying asbestos waste and transporting it to a disposal site.

特許文献1は、現場で発生したアスベスト廃棄物をコンクリートミキサー車に吸引して処分場所に運搬することで運搬時におけるアスベストの飛散を防止することができ、さらにコンクリートミキサー車に時間の経過により固化する液状材料を予め収納させておき、投入された廃棄物と液状材料とを混合しつつ、その混合物を処分場所に投棄して固化させる方法について記載されている。
特開2007−44676号公報
In Patent Document 1, asbestos waste generated on site can be sucked into a concrete mixer truck and transported to a disposal site to prevent asbestos from being scattered during transportation. Further, the concrete mixer truck is solidified over time. A method is described in which a liquid material to be stored is stored in advance, and the charged waste and the liquid material are mixed, and the mixture is discarded and solidified at a disposal site.
JP 2007-44676 A

しかしながら、従来の廃棄物の処分方法では以下のような問題があった。
すなわち、アスベストやダイオキシン等を含む廃棄物は、所定の廃棄場所が確保され、その場所に埋設されて処分されることから、処分費は廃棄物の体積に比例している現状がある。そして、建築物などから発生する廃棄物はかさ密度が小さく、重量に対して体積が大きい状態となっている。そこで、廃棄物の体積を小さくして処分費の低減を図るために、例えば廃棄物を専用の袋体に入れた状態で、内部の廃棄物をプレス機(圧縮装置)などを使用して圧縮して減容化させることが行なわれているが、機械的に圧縮するため、袋体内に収容されている廃棄物の状態(形状、塊の大きさ)や容量によっては圧縮作業中に袋体が破れてアスベストが飛散したりダイオキシンが大気中に放出されるという問題があった。
However, the conventional waste disposal methods have the following problems.
That is, waste including asbestos, dioxin, and the like has a predetermined disposal location, and is buried and disposed of at that location, so that the disposal cost is proportional to the volume of the waste. And waste generated from buildings and the like has a low bulk density and a large volume with respect to weight. Therefore, in order to reduce the volume of waste and reduce disposal costs, for example, the waste inside is compressed using a press (compressor) etc. with the waste in a special bag. However, depending on the state (shape, size of lump) and volume of waste contained in the bag, it is compressed during the compression operation because it is mechanically compressed. Has been broken and asbestos is scattered and dioxins are released into the atmosphere.

本発明は、上述する問題点に鑑みてなされたもので、体積の縮小化と湿潤化を図ることで、アスベストやダイオキシンなどの有害物質の飛散や放出を防止するようにした廃棄物の減容方法を提供することを目的とする。   The present invention has been made in view of the above-mentioned problems, and is intended to reduce the volume of waste by preventing the scattering and release of harmful substances such as asbestos and dioxins by reducing the volume and moistening. It aims to provide a method.

上記目的を達成するため、本発明に係る廃棄物の減容方法では、廃棄物を収納袋体に入れる工程と、収納袋体の開口を下方に向けて配置させる工程と、開口に注入管を配するとともに、注入管と収納袋体の開口部との間に、収納袋体の内部と外部とを連通する隙間を設けるようにして開口を縮小する工程と、注入管を通して収納袋体内に水蒸気を吹き込み、収納袋体内の空気を水蒸気に置換する工程と、収納袋体内を水蒸気に置換させた後に、開口を密閉させる工程とを有することを特徴としている。
本発明では、開口を下方に向けた収納袋体内に水蒸気を吹き込むことで、水蒸気より重い分子量をなす酸素及び窒素を多く含む収納袋体内の空気が下降して開口に形成された隙間から収納袋体の外部に排出され、収納袋体内の空気が水蒸気に置換する。この置換過程において、水蒸気の一部が水になり、収納袋体内の廃棄物が湿潤化され、例えば廃棄物がアスベストやダイオキシン等の有害物質を含んでいる場合に、その有害物質が収納袋体内で飛散することを抑制することができ、前記空気の排出とともに有害物質が収納袋体の外部に放出されることを防ぐことができる。そして、収納袋体の開口を密閉した後に水蒸気温度が低下して水になると、収納袋体の内部は気体成分(水蒸気)がほぼ無くなった状態で真空状態となり、大気圧に対して負圧になる。そのため、収納袋体は外部の大気によって圧縮されることになり、収納袋体内の廃棄物も圧縮されて減容化されることになる。
In order to achieve the above object, in the waste volume reducing method according to the present invention, a step of putting waste into the storage bag body, a step of arranging the opening of the storage bag body downward, and an injection tube in the opening A step of reducing the opening by providing a gap between the injection tube and the opening of the storage bag body so as to communicate the inside and the outside of the storage bag body, and water vapor into the storage bag through the injection tube. And the step of replacing the air in the storage bag with water vapor and the step of sealing the opening after replacing the storage bag with water vapor.
In the present invention, by blowing water vapor into the storage bag body with the opening facing downward, the air in the storage bag body containing a large amount of oxygen and nitrogen having a molecular weight heavier than water vapor falls and the storage bag is formed through the gap formed in the opening. It is discharged to the outside of the body, and the air in the storage bag is replaced with water vapor. In this replacement process, a part of the water vapor becomes water and the waste in the storage bag is moistened. For example, when the waste contains harmful substances such as asbestos and dioxin, the harmful substances are stored in the storage bag. It is possible to prevent the harmful substances from being released to the outside of the storage bag body along with the discharge of the air. When the water vapor temperature drops to water after sealing the opening of the storage bag body, the inside of the storage bag body is in a vacuum state with almost no gas component (water vapor), and the negative pressure with respect to atmospheric pressure. Become. Therefore, the storage bag body is compressed by the external atmosphere, and the waste in the storage bag body is also compressed to reduce the volume.

本発明の廃棄物の減容方法によれば、収納袋体の内部を真空状態とし、収納袋体の外部の大気圧に対して負圧とすることで、収納袋体とともに廃棄物を圧縮させる方法であるため、圧縮装置を使用して機械的に圧縮する場合と比べて収納袋体が破裂するするといった不具合をなくすことができ、例えばアスベストやダイオキシン等の有害物質を含む廃棄物の場合に、その有害物質が収納袋体の外部に放出されることを防いで廃棄物を減容化させることができる。したがって、廃棄物の体積を小さくした状態で廃棄処分することができ、処分費の低減を図ることができる。
さらに、収納袋体内に吹き込んだ水蒸気の一部が水となり、収納袋体内の廃棄物を湿潤化させて廃棄物に含まれる有害物質が収納袋体内で飛散することを抑制することができ、置換中に収納袋体の内部から排出される空気とともに有害物質が収納袋体の外部に放出されることを防ぐことができる。
According to the waste volume reducing method of the present invention, the inside of the storage bag body is evacuated, and the waste bag is compressed together with the storage bag body by setting a negative pressure relative to the atmospheric pressure outside the storage bag body. Because it is a method, it is possible to eliminate the problem that the storage bag body bursts compared to the case where it is mechanically compressed using a compression device. For example, in the case of waste containing harmful substances such as asbestos and dioxin The hazardous substances can be prevented from being released to the outside of the storage bag body, and the volume of waste can be reduced. Therefore, it can be disposed of in a state where the volume of the waste is reduced, and the disposal cost can be reduced.
Furthermore, a part of the water vapor blown into the storage bag becomes water, and the waste in the storage bag is moistened so that harmful substances contained in the waste can be prevented from scattering in the storage bag. It is possible to prevent harmful substances from being released to the outside of the storage bag together with the air exhausted from the inside of the storage bag.

以下、本発明の実施の形態による廃棄物の減容方法について、図1乃至図3に基づいて説明する。
図1は本発明の実施の形態によるアスベスト廃棄物の減容作業状態を示す図、図2は図1に示す収納袋体の開口付近を示すの拡大図、図3(a)、(b)は置換後の減容作業工程を示す図である。
Hereinafter, a waste volume reducing method according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3.
1 is a view showing a volume reduction operation state of asbestos waste according to an embodiment of the present invention, FIG. 2 is an enlarged view showing the vicinity of the opening of the storage bag body shown in FIG. 1, and FIGS. 3 (a) and 3 (b) These are figures which show the volume reduction work process after substitution.

図1に示すように、本実施の形態による廃棄物の減容方法は、例えば建築物におけるアスベスト除去作業現場、或いは解体現場等から廃材として取り出されたアスベストを含む廃棄物(以下、アスベスト廃棄物1とする)を所定の廃棄処理場へ持ち込んで処分する際に採用される。そして、この減容方法による減容作業は、アスベスト廃棄物1の発生現場、或いは現場から廃棄処分場内に運搬した廃棄処分場で行なわれる。   As shown in FIG. 1, the volume reduction method of the waste according to the present embodiment is a waste containing asbestos taken out as waste material from an asbestos removal work site or a demolition site in a building (hereinafter referred to as asbestos waste). 1) is taken to a predetermined disposal site and disposed. And the volume reduction work by this volume reduction method is performed at the disposal site where the asbestos waste 1 is generated or transported from the site to the disposal site.

本減容方法は、アスベスト廃棄物1を収納袋体2に入れ、収納袋体2の開口2aを下方に向けて配置させ、開口2aに注入管3(後述する)を配するとともに、注入管3と収納袋体2の開口部2bとの間に収納袋体2の内部と外部とを連通する隙間Sを設けるようにして開口部2bを絞って開口2aを縮小する。そして、注入管3を通して収納袋体2内に水蒸気Wを吹き込み、収納袋体2内の空気Gを水蒸気Wに置換し、収納袋体2内を水蒸気Wに置換させた後に開口2aを密閉させるようにした方法である。
なお、収納袋体2内の空気Gは、収納袋体2内でアスベスト廃棄物1を除いた空間に存在する空気(酸素O、窒素Nなど)と、アスベスト廃棄物1内部の空隙の空気とを含んだものとされる。
In this volume reduction method, the asbestos waste 1 is placed in the storage bag body 2, the opening 2a of the storage bag body 2 is arranged downward, and an injection tube 3 (described later) is disposed in the opening 2a. 3 and the opening 2b of the storage bag body 2 are provided so that a gap S that communicates the inside and the outside of the storage bag body 2 is provided to narrow the opening 2b and reduce the opening 2a. Then, the water vapor W is blown into the storage bag body 2 through the injection tube 3, the air G in the storage bag body 2 is replaced with the water vapor W, and the opening 2 a is sealed after the storage bag body 2 is replaced with the water vapor W. This is the method.
In addition, the air G in the storage bag body 2 is the air (oxygen O 2 , nitrogen N 2, etc.) existing in the space excluding the asbestos waste 1 in the storage bag body 2 and the voids inside the asbestos waste 1. It is supposed to contain air.

ここで、減容作業においては、作業現場から発生したアスベスト廃棄物1を収容するための収納袋体2と、収納袋体2の開口2aに差し込まれた状態で配置される注入管3と、注入管3を介して収納袋体2内に100℃以上の水蒸気Wを送り込むための水蒸気発生装置4と、収納袋体2の開口部2bを締め付けるための締付け部材5とが用いられる。   Here, in the volume reduction operation, the storage bag body 2 for storing the asbestos waste 1 generated from the work site, the injection tube 3 arranged in a state of being inserted into the opening 2a of the storage bag body 2, A water vapor generating device 4 for sending water vapor W of 100 ° C. or more into the storage bag body 2 through the injection tube 3 and a tightening member 5 for tightening the opening 2b of the storage bag body 2 are used.

収納袋体2は、アスベスト廃棄用の袋であって、例えばビニール製、ポリエチレン製などの材料からなり、所定量のアスベスト廃棄物1を収容可能な容量のものが採用されている。
注入管3は、一端3aが水蒸気発生装置4の吐出口4aに接続され、他端3bが収納袋体2内となるように設けられている。
そして、水蒸気発生装置4として、ボイラーが使用される。また、締付け部材5として、例えば結束バンド等が用いられる。
The storage bag body 2 is a bag for asbestos disposal and is made of a material such as vinyl or polyethylene and has a capacity capable of accommodating a predetermined amount of asbestos waste 1.
The injection tube 3 is provided so that one end 3 a is connected to the discharge port 4 a of the water vapor generating device 4 and the other end 3 b is in the storage bag body 2.
A boiler is used as the water vapor generator 4. Further, for example, a binding band or the like is used as the tightening member 5.

次に、本実施の形態によるアスベスト廃棄物の減容方法、減容化手順について図面に基づいて説明する。
先ず、図1に示すように、作業現場で発生した所定量のアスベスト廃棄物1を収納袋体2内に入れ、収納袋体2の開口2aが下向きとなるように配置する。そして、開口2aに注入管3を差し込むとともに、締付け部材5を用いて収納袋体2内の空気Gが通過できる大きさの隙間Sをもたせて収納袋体2の開口部2bを絞って開口2aを縮小しておく。このとき、収納袋体2の開口2aは隙間Sがあるものの閉じた縮小された状態となっているので、収納袋体2内のアスベスト廃棄物1が開口2aから流出されることを抑制することができる。
Next, a volume reduction method and volume reduction procedure for asbestos waste according to the present embodiment will be described with reference to the drawings.
First, as shown in FIG. 1, a predetermined amount of asbestos waste 1 generated at the work site is placed in the storage bag body 2 and arranged so that the opening 2 a of the storage bag body 2 faces downward. Then, the injection tube 3 is inserted into the opening 2a, and the opening 2b of the storage bag body 2 is narrowed by using the tightening member 5 so as to have a gap S that allows the air G in the storage bag body 2 to pass therethrough. Reduce. At this time, since the opening 2a of the storage bag body 2 is in a closed and reduced state although there is a gap S, the asbestos waste 1 in the storage bag body 2 is prevented from flowing out of the opening 2a. Can do.

次いで、図2に示すように、水蒸気発生装置4(図1参照)を作動させて、発生した水蒸気Wを注入管3より収納袋体2内に吹き込む。そうすると、水蒸気(水HO)の分子量18に対して、収納袋体2内の空気Gのほぼ100%(略99%)を占める酸素Oと窒素Nの分子量がそれぞれ32、28であることから、収納袋体2に対して下から吹き上げられる分子量の軽い水蒸気Wは、収納袋体2内の上方から溜まっていくとともに、空気Gが下降し、流入した水蒸気Wと略同量の空気Gが隙間Sから大気中に排出される。すなわち、収納袋体2内の空気Gは水蒸気Wに置換されることになる。 Next, as shown in FIG. 2, the water vapor generating device 4 (see FIG. 1) is operated, and the generated water vapor W is blown into the storage bag body 2 through the injection pipe 3. Then, the molecular weights of oxygen O 2 and nitrogen N 2 occupying almost 100% (approximately 99%) of the air G in the storage bag 2 with respect to the molecular weight 18 of water vapor (water H 2 O) are 32 and 28, respectively. Therefore, the light-weight water vapor W blown from the lower side with respect to the storage bag body 2 accumulates from above in the storage bag body 2, and the air G descends. Air G is discharged from the gap S into the atmosphere. That is, the air G in the storage bag body 2 is replaced with the water vapor W.

なお、収納袋体2内に吹き込まれた水蒸気Wは、一部が液化して白い霧状の水となり、収納袋体2内のアスベスト廃棄物1を湿潤状態とし、アスベストの飛散を抑制することができ、置換中(収納袋体2の開口2aに隙間Sが形成されている状態)において収納袋体2から外部に排出される空気Gとともに、アスベストが大気中(収納袋体2の外部)に放出されることを防ぐことができる。   Note that the water vapor W blown into the storage bag body 2 is partially liquefied and becomes white mist-like water, and the asbestos waste 1 in the storage bag body 2 is in a wet state to suppress the scattering of asbestos. Asbestos is in the atmosphere (outside of the storage bag body 2) together with the air G discharged outside from the storage bag body 2 during replacement (a state where the gap S is formed in the opening 2a of the storage bag body 2). Can be prevented from being released.

続いて、図1及び図3(a)に示すように、収納袋体2内の空気Gが水蒸気Wに置換された後、水蒸気Wの収納袋体2内への吹き込みを停止させ、注入管3を収納袋体2から取り除くとともに、締付け部材5をさらに強固に締め付けて収納袋体2の開口2aを密閉する。図3(b)に示すように、その後、収納袋体2内では、100℃以上の高温の水蒸気Wの温度が次第に低くなって水になる。このとき、収納袋体2の内部は、気体成分(水蒸気)がほぼ無くなった状態で真空状態となり、大気圧に対して負圧になる。そのため、収納袋体2は、大気Tによって圧縮されることになる。   Subsequently, as shown in FIGS. 1 and 3A, after the air G in the storage bag body 2 is replaced with the water vapor W, the injection of the water vapor W into the storage bag body 2 is stopped, and the injection tube 3 is removed from the storage bag body 2, and the fastening member 5 is tightened more firmly to seal the opening 2 a of the storage bag body 2. As shown in FIG.3 (b), after that, in the storage bag body 2, the temperature of the high temperature water vapor | steam W of 100 degreeC or more becomes low gradually, and becomes water. At this time, the inside of the storage bag body 2 is in a vacuum state with almost no gas component (water vapor), and becomes a negative pressure with respect to the atmospheric pressure. Therefore, the storage bag body 2 is compressed by the atmosphere T.

そして、収納袋体2内のアスベスト廃棄物1は、かさ密度が小さく且つ重量に対して体積が大きい状態であることから、収納袋体2の圧縮と共に圧縮されて体積が小さくなって減容化されることになる。
なお、減容化されたアスベスト廃棄物1は、廃棄処分場にて埋設される等して処分される。
And since the asbestos waste 1 in the storage bag body 2 is in a state where the bulk density is small and the volume is large with respect to the weight, the volume is reduced by being compressed with the compression of the storage bag body 2. Will be.
The volume-reduced asbestos waste 1 is disposed of by being buried in a disposal site.

上述のように本実施の形態による廃棄物の減容方法では、収納袋体2の内部を真空状態とし、収納袋体2の外部の大気圧に対して負圧とすることで、収納袋体2とともにアスベスト廃棄物1を圧縮させる方法であるため、圧縮装置を使用して機械的に圧縮する場合と比べて収納袋体が破裂するするといった不具合をなくすことができ、アスベストが収納袋体2の外部に放出されることを防いでアスベスト廃棄物1を減容化させることができる。したがって、アスベスト廃棄物1の体積を小さくした状態で廃棄処分することができ、処分費の低減を図ることができる。
さらに、収納袋体2内に吹き込んだ水蒸気Wの一部が水となり、収納袋体2内のアスベスト廃棄物1を湿潤化させてアスベストが収納袋体2内で飛散することを抑制することができ、置換中に収納袋体2の内部から排出される空気Gとともにアスベストが収納袋体2の外部に放出されることを防ぐことができる。
As described above, in the waste volume reducing method according to the present embodiment, the inside of the storage bag body 2 is in a vacuum state, and the storage bag body 2 is set to a negative pressure with respect to the atmospheric pressure outside the storage bag body 2. 2, the asbestos waste 1 is compressed, so that it is possible to eliminate the problem that the storage bag body bursts as compared with the case of mechanical compression using a compression device. Asbestos waste 1 can be reduced in volume by being prevented from being released to the outside. Therefore, the asbestos waste 1 can be disposed of with a reduced volume, and the disposal cost can be reduced.
Further, a part of the water vapor W blown into the storage bag body 2 becomes water, and the asbestos waste 1 in the storage bag body 2 is moistened to prevent the asbestos from being scattered in the storage bag body 2. It is possible to prevent the asbestos from being discharged to the outside of the storage bag body 2 together with the air G discharged from the inside of the storage bag body 2 during the replacement.

以上、本発明による廃棄物の減容方法の実施の形態について説明したが、本発明は上記の実施の形態に限定されるものではなく、その趣旨を逸脱しない範囲で適宜変更可能である。
例えば、本実施の形態ではアスベストを含む廃棄物を減容方法の対象としているが、アスベスト廃棄物に限定されることはない。例えば、ゴミ処理場の焼却炉や煙突といった構造物の解体工事などで発生するダイオキシンを含む廃棄物(例えば解体作業に使用した養生シート等)なども本発明の減容方法の対象とされる。また、これらアスベストやダイオキシンを含む廃棄物以外の廃棄物であってもかまわない。
また、本実施の形態では水蒸気発生装置4としてボイラーを使用して水蒸気Wを発生させているが、これに限定されることはなく、他の水蒸気発生手段を使用してもかまわない。
また、水蒸気の温度は任意とされるが、低い温度だと、水蒸気Wを収納袋体2内に吹き込んだ直後(つまり収納袋体2の開口2aが開いた状態)に気体から水に変わってしまうことになり、収納袋体2の開口2aを密閉させて内部を真空状態とさせる作用がなくなるため、収納袋体2に吹き込んだ水蒸気Wの多くが密閉前に水に変化しないような水蒸気温度とすることが好ましいとされる。
As mentioned above, although embodiment of the volume reduction method of the waste by this invention was described, this invention is not limited to said embodiment, In the range which does not deviate from the meaning, it can change suitably.
For example, in the present embodiment, waste containing asbestos is targeted for the volume reduction method, but is not limited to asbestos waste. For example, waste containing dioxin (for example, a curing sheet used for demolition work) generated in the demolition work of a structure such as an incinerator or a chimney at a garbage disposal site is also a target of the volume reduction method of the present invention. Further, waste other than waste containing these asbestos and dioxins may be used.
In the present embodiment, the steam W is generated by using a boiler as the water vapor generating device 4, but the present invention is not limited to this, and other water vapor generating means may be used.
Moreover, although the temperature of water vapor | steam is arbitrary, when it is low temperature, it changes from gas to water immediately after water vapor | steam W was blown in in the storage bag body 2 (that is, the state where the opening 2a of the storage bag body 2 was opened). The water vapor temperature is such that most of the water vapor W blown into the storage bag body 2 does not change to water before sealing, because the opening 2a of the storage bag body 2 is sealed and the inside is not evacuated. It is preferable that

また、収納袋体2の容量、収納袋体2内に収容するアスベスト廃棄物1の収容量は任意とされる。そして、本実施の形態によるアスベスト廃棄物1は、アスベストを含む廃材が対象とされ、コンクリートや壁材など他の材料が混合した廃棄物とされる。
さらに、本実施の形態では締付け部材5を結束バンドとしているが、これに限定されることはなく、例えば、紐や挟持可能なクリップ等の締付け手段であってもかまわない。要は、収納袋体2内に吹き込んだ水蒸気Wが漏れ出さないように密閉可能な手段であればよいのである。
さらにまた、本実施の形態では収納袋体2の開口部2bを絞って開口2aを縮小させているが、これに限らず、収納袋体2の形状、構成によって適宜対応することができる。すなわち、例えば収納袋体2の開口2aにファスナーのような密閉手段が設けられている場合には、注入管3と開口部2bとの間に上述したような所定の隙間Sを設けた状態でファスナーを閉めるようにすればよい。
The capacity of the storage bag body 2 and the storage amount of the asbestos waste 1 stored in the storage bag body 2 are arbitrary. The asbestos waste 1 according to the present embodiment is a waste material containing asbestos, and is a waste material mixed with other materials such as concrete and wall materials.
Further, in the present embodiment, the fastening member 5 is a binding band, but the present invention is not limited to this. For example, a fastening means such as a string or a clip that can be clamped may be used. In short, any means can be used as long as it can be sealed so that the water vapor W blown into the storage bag body 2 does not leak out.
Furthermore, in the present embodiment, the opening 2a is reduced by narrowing the opening 2b of the storage bag body 2, but the present invention is not limited to this, and can be appropriately handled depending on the shape and configuration of the storage bag body 2. That is, for example, when a sealing means such as a fastener is provided in the opening 2a of the storage bag body 2, the predetermined gap S as described above is provided between the injection tube 3 and the opening 2b. The zipper should be closed.

本発明の実施の形態によるアスベスト廃棄物の減容作業状態を示す図である。It is a figure which shows the volume reduction work state of asbestos waste by embodiment of this invention. 図1に示す収納袋体の開口付近を示すの拡大図である。FIG. 2 is an enlarged view showing the vicinity of the opening of the storage bag body shown in FIG. 1. (a)、(b)は置換後の減容作業工程を示す図である。(A), (b) is a figure which shows the volume reduction work process after substitution.

符号の説明Explanation of symbols

1 アスベスト廃棄物
2 収納袋体
2a 開口
2b 開口部
3 注入管
4 水蒸気発生装置
5 締付け部材
G 収納袋体内の空気
S 隙間
T 大気
W 水蒸気
DESCRIPTION OF SYMBOLS 1 Asbestos waste 2 Storage bag body 2a Opening 2b Opening part 3 Injection pipe 4 Water vapor generating device 5 Tightening member G Air in storage bag body S Gap T Air | atmosphere W Water vapor

Claims (1)

廃棄物を収納袋体に入れる工程と、
前記収納袋体の開口を下方に向けて配置させる工程と、
前記開口に注入管を配するとともに、前記注入管と前記収納袋体の開口部との間に、前記収納袋体の内部と外部とを連通する隙間を設けるようにして前記開口を縮小する工程と、
前記注入管を通して前記収納袋体内に水蒸気を吹き込み、前記収納袋体内の空気を前記水蒸気に置換する工程と、
前記収納袋体内を前記水蒸気に置換させた後に、前記開口を密閉させる工程と、
を有することを特徴とする廃棄物の減容方法。
A step of putting waste in a storage bag;
Placing the opening of the storage bag body downward,
A step of arranging an injection tube in the opening and reducing the opening so as to provide a gap between the injection tube and the opening of the storage bag body to communicate the inside and the outside of the storage bag body; When,
Injecting water vapor into the storage bag through the injection tube, and replacing the air in the storage bag with the water vapor;
Sealing the opening after replacing the storage bag with the water vapor;
The volume reduction method of the waste characterized by having.
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