JPH0812278B2 - Compressed volume reduction method for solid waste - Google Patents
Compressed volume reduction method for solid wasteInfo
- Publication number
- JPH0812278B2 JPH0812278B2 JP62143519A JP14351987A JPH0812278B2 JP H0812278 B2 JPH0812278 B2 JP H0812278B2 JP 62143519 A JP62143519 A JP 62143519A JP 14351987 A JP14351987 A JP 14351987A JP H0812278 B2 JPH0812278 B2 JP H0812278B2
- Authority
- JP
- Japan
- Prior art keywords
- solid waste
- compressed
- reaction force
- volume reduction
- volume
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002910 solid waste Substances 0.000 title claims description 20
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 title claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 5
- 239000003063 flame retardant Substances 0.000 claims description 5
- 229920003051 synthetic elastomer Polymers 0.000 claims description 4
- 229920003002 synthetic resin Polymers 0.000 claims description 4
- 239000000057 synthetic resin Substances 0.000 claims description 4
- 239000005061 synthetic rubber Substances 0.000 claims description 4
- 238000005056 compaction Methods 0.000 claims 1
- 238000003672 processing method Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 7
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 230000002285 radioactive effect Effects 0.000 description 4
- 239000002901 radioactive waste Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 238000013142 basic testing Methods 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、原子力発電所等の原子力設備から発生する
不燃性及び難燃性の放射性の固体廃棄物の圧縮減容処理
方法に関するものである。TECHNICAL FIELD The present invention relates to a method for compressing and reducing the volume of non-combustible and flame-retardant radioactive solid waste generated from nuclear facilities such as a nuclear power plant. .
（従来の技術） 上記のような放射性の固体廃棄物はそのままドラム缶
のような金属製の容器内に密閉して貯蔵庫内に保管され
ているが、近年放射性の廃棄物の貯蔵量の増加に伴い貯
蔵容量は限界に近付いている。このため例えば特開昭61
−84599号公報に示されるような大型のプレス装置によ
り、放射性の固体廃棄物が充填された容器を数分の一の
容積となるまで圧縮減容処理したうえで、更に保管容器
に収納することによって貯蔵スペースの減少を図る方法
が開発されている。また現在我国では電子力発電所より
発生する放射性廃棄物の処理処分に関する基準が検討さ
れており、この基準に基いて昭和66年から開始される予
定の陸地処分においては、上記のような圧縮体をドラム
缶等の保管容器に収納し、その間をモルタル、プラスチ
ック等により固定したものが廃棄体として考えられてい
る。(Prior Art) The radioactive solid waste as described above is stored in a storage container as it is sealed in a metal container such as a drum, but with the increase in the storage amount of radioactive waste in recent years, Storage capacity is nearing its limit. Therefore, for example, JP-A-61
-By using a large-scale press device as shown in Japanese Patent Publication No. 84599, the container filled with radioactive solid waste is compressed and reduced to a volume of a fraction, and then stored in a storage container. Have developed methods for reducing storage space. In Japan, standards for the treatment and disposal of radioactive waste generated from electronic power plants are currently under consideration, and in land disposal scheduled to start in 1969 based on this standard, the above-mentioned compressed It is considered that the waste is stored in a storage container such as a drum and fixed between them with mortar, plastic, or the like.
ところがこのような廃棄体は埋設処分後にドラム缶の
ような金属製の保管容器が腐食劣化することが想定され
るうえ、これまでの基礎試験によって固体廃棄物が塩化
ビニル樹脂やゴム等から主としてなる場合には200容
器においては１〜５トン程度の大きい反力が内在するこ
とが判明しているので、腐食劣化によって外側の保管容
器が壊れると圧縮体に内在する反力が顕在してスプリン
グバック現象が生じ、固定材であるモルタルやプラスチ
ックにクラックが入り、腐食劣化により外側の保管容器
が壊れた場合には、放射性廃棄物が外部へ露出する危険
が予想される。またこのための対策としてはモルタルや
プラスチック等の固定材の厚さを増すことも考えられる
が、その分だけ内部に充填できる固体廃棄物量が減少す
ることとなるので、減容性が損われる欠点がある。However, such waste materials are expected to corrode and deteriorate metal storage containers such as drums after they are buried, and when solid waste mainly consists of vinyl chloride resin, rubber, etc., due to the basic tests so far. It has been found that a large reaction force of about 1 to 5 tons is present in 200 containers, so if the outer storage container is broken due to corrosion deterioration, the reaction force existing in the compressed body will be manifested and the springback phenomenon will occur. If mortar or plastic that is a fixing material is cracked and the outer storage container is broken due to corrosion deterioration, there is a risk that radioactive waste will be exposed to the outside. As a countermeasure for this, it is possible to increase the thickness of the fixing material such as mortar and plastic, but since the amount of solid waste that can be filled inside will be reduced by that much, the volume reduction property is impaired. There is.
（発明が解決しようとする問題点） 本発明は上述したような従来の問題点を解決して、廃
棄体を埋設処分した場合にもスプリングバック現象によ
って固定材にクラックが入り放射性廃棄物が外部へ露出
するおそれもなく、また固定材の厚さを増加させて減容
性を損なうこともない固体廃棄物の圧縮減容処理方法を
目的として完成されたものである。(Problems to be Solved by the Invention) The present invention solves the conventional problems as described above, and even when the waste is buried, the fixing material is cracked due to the springback phenomenon and the radioactive waste is exposed to the outside. It has been completed for the purpose of a method for compressing and reducing the volume of solid waste without fear of being exposed to the outside and not impairing the volume reduction property by increasing the thickness of the fixing material.
（問題点を解決するための手段） 本発明は不燃性及び難燃性の固体廃棄物を貯蔵スペー
スの低減を図る目的で圧縮減容処理するにあたり、合成
樹脂やゴムのような圧縮後に反力が内在する性質を持つ
固体廃棄物をドラム缶のような金属製の容器に充填した
まま圧縮減容したうえで加熱処理し、内部反力を除いて
物理的に安定な圧縮体とすることを特徴とするものであ
る。(Means for Solving Problems) In the present invention, when compressing and reducing the volume of non-combustible and flame-retardant solid waste for the purpose of reducing the storage space, reaction force after compression such as synthetic resin or rubber is used. It is characterized in that solid waste with inherent properties is packed in a metal container such as a drum and then compressed and reduced in volume and then heat treated to remove the internal reaction force and become a physically stable compressed body. It is what
次に本発明を図面を参照しつつ更に詳細に説明する
と、まず第１図に示されるドラム缶のような金属製の容
器（１）内に不燃性及び難燃性の固体廃棄物が充填さ
れ、第２図のように大型のプレス式圧縮装置（２）のラ
ム（３）により圧縮されてその容積が数分の一にまで減
少された圧縮体（４）となる（第３図）。この固体廃棄
物が原子力発電所等で多用される塩化ビニルのような合
成樹脂やゴムから主としてなる場合には、圧縮体（４）
の内部に大きい反力が内在し、圧縮体（４）がこの反力
により次第に膨脹するスプリングバック現象が生ずるこ
とは前述したとおりである。そこで本発明においては、
第４図に示されるように圧縮体（４）を電気ヒータのよ
うな加熱手段（５）を備えた加熱装置を用いて加熱処理
する。加熱方法は熱風、蒸気、赤外線等の任意のものを
採用することができる。加熱温度は圧縮体（４）内の合
成樹脂やゴムが軟化して内在する反力を低減させること
ができる軟化温度以上とする必要があるが、これらが熱
分解して塩素ガス等の有害ガスを発生するに至る分解温
度以下とすることが好ましく、たとえば塩化ビニルにお
いては100〜190℃、ゴムにおいては200〜400℃であるこ
とが好ましく、大体100〜400℃程度の温度範囲とするこ
とが望ましい。なお難燃性、不燃性の固体廃棄物として
はこれらの他に金属、保温材、ガラス、コンクリート等
があるが、これらは圧縮した場合にも内在反力がほとん
ど発生しないので本発明による加熱処理は行う必要はな
い。このようにして加熱処理によって内外反力を除かれ
た圧縮体（４）は第５図のようにドラム缶のような保管
容器（６）中に複数個ずつ充填されたうえ、第６図のよ
うに圧縮体（４）の外周面と保管容器（６）の内周面と
の間にモルタル等の固定材（７）を充填機（８）によっ
て充填し、全体を固化させて廃棄体とする。Next, the present invention will be described in more detail with reference to the drawings. First, a non-combustible and flame-retardant solid waste is filled in a metal container (1) such as a drum shown in FIG. As shown in FIG. 2, the compressed body (4) is compressed by the ram (3) of the large-sized press type compression device (2) and its volume is reduced to a fraction (FIG. 3). When this solid waste consists mainly of synthetic resin or rubber such as vinyl chloride, which is often used in nuclear power plants, etc., the compressed body (4)
As described above, a large reaction force is internally present inside the compression body (4), and the compression body (4) gradually expands due to this reaction force. Therefore, in the present invention,
As shown in FIG. 4, the compressed body (4) is heat-treated by using a heating device having a heating means (5) such as an electric heater. As a heating method, any method such as hot air, steam and infrared rays can be adopted. The heating temperature needs to be higher than the softening temperature at which the synthetic resin or rubber in the compression body (4) softens and the internal reaction force can be reduced, but these are thermally decomposed and harmful gas such as chlorine gas is generated. It is preferable that the temperature is not higher than the decomposition temperature leading to the generation of, for example, 100 to 190 ° C. in vinyl chloride, 200 to 400 ° C. in rubber, and a temperature range of approximately 100 to 400 ° C. desirable. The flame-retardant and non-combustible solid wastes include metals, heat insulating materials, glass, concrete, etc. in addition to these, but since the internal reaction force hardly occurs even when compressed, the heat treatment according to the present invention Does not have to be done. As shown in FIG. 5, the compressed bodies (4) from which the internal and external reaction forces have been removed by the heat treatment are filled in a storage container (6) such as a drum as shown in FIG. Then, a fixing material (7) such as mortar is filled between the outer peripheral surface of the compressed body (4) and the inner peripheral surface of the storage container (6) by a filling machine (8), and the whole is solidified into a waste. .
（作用） このように本発明の方法に従って加熱処理された圧縮
体（４）は圧縮後に加熱されることにより内部反力が除
かれて物理的に安定な状態となっているので、従来のよ
うなスプリングバック現象を生ずるおそれがない。従っ
て第６図に示されるように圧縮体（４）を保管容器
（６）内に充填し固定材（７）により固定して埋設処分
した後に外側の保管容器（６）が腐食劣化した場合に
も、内部の圧縮体（４）がスプリングバック現象により
膨脹して固定材（７）にクラックが入ることがなく、放
射性の固体廃棄物が外部へ露出して周囲を汚染する危険
は防止される。従ってまた本発明によれば、スプリング
バックを防止するために固定材（７）の厚さを増加させ
る必要もないので、保管容器（６）内に充填できる固体
廃棄物量を増加させることもできる。(Operation) As described above, since the compressed body (4) heat-treated according to the method of the present invention is heated after being compressed, the internal reaction force is removed and it is in a physically stable state. There is no possibility of causing a springback phenomenon. Therefore, as shown in FIG. 6, when the outer storage container (6) is corroded and deteriorated after the compressed body (4) is filled in the storage container (6), fixed by the fixing material (7) and buried. However, the compression body (4) inside does not expand due to the springback phenomenon and the fixing material (7) does not crack, and the risk of radioactive solid waste being exposed to the outside and contaminating the surroundings is prevented. . Therefore, according to the present invention, since it is not necessary to increase the thickness of the fixing material (7) in order to prevent the springback, the amount of solid waste that can be filled in the storage container (6) can be increased.
（発明の効果） 本発明は以上の説明からも明らからように、埋設処分
後に圧縮体がスプリングバックにより固定材にクラック
が入り固体廃棄物が外部へ露出するおそれを防止すると
ともに、固定材の厚さを増加させる必要もなく減容性を
損なうおそれもないものである。また本発明は単に圧縮
体を加熱するだけでよいので処理コストも安く大量処分
に好適なものである。よって本発明は従来の問題点を一
掃した固体廃棄物の圧縮減容処理方法として、産業の発
展に寄与するところは極めて大である。(Effects of the Invention) As is apparent from the above description, the present invention prevents the solid waste from being exposed to the outside while preventing the compression body from cracking due to the springback of the compression body after the burial disposal. There is no need to increase the thickness, and there is no fear of impairing the volume reduction property. Further, since the present invention only needs to heat the compressed body, the processing cost is low and it is suitable for mass disposal. Therefore, the present invention is extremely large in that it contributes to the development of industry as a method for compressing and reducing the volume of solid waste that eliminates the conventional problems.
第１図〜第６図は本発明の固体廃棄物の圧縮減容処理方
法を示す工程説明図である。 （１）：容器、（４）：圧縮体、（５）加熱手段、
（６）：保管容器、（７）：固定材1 to 6 are process explanatory views showing the method for compressing and reducing the volume of solid waste according to the present invention. (1): container, (4): compressed body, (5) heating means,
(6): Storage container, (7): Fixing material
Claims (1)
ースの低減を図る目的で圧縮減容処理するにあたり、合
成樹脂やゴムのような圧縮後に反力が内在する性質を持
つ固体廃棄物をドラム缶のような金属製の容器に充填し
たまま圧縮減容したうえで加熱処理し、内部反力を除い
て物理的に安定な圧縮体とすることを特徴とする固体廃
棄物の圧縮減容処理方法。1. A solid waste, such as synthetic resin or rubber, which has a property of having a reaction force after being compressed when the non-combustible and flame-retardant solid waste is subjected to compression volume reduction for the purpose of reducing the storage space. Compaction reduction of solid waste, which is characterized by compressing and reducing the volume while filling a metal container such as a drum can, and removing the internal reaction force to form a physically stable compressed body. Processing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62143519A JPH0812278B2 (en) | 1987-06-09 | 1987-06-09 | Compressed volume reduction method for solid waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62143519A JPH0812278B2 (en) | 1987-06-09 | 1987-06-09 | Compressed volume reduction method for solid waste |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63307396A JPS63307396A (en) | 1988-12-15 |
| JPH0812278B2 true JPH0812278B2 (en) | 1996-02-07 |
Family
ID=15340625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62143519A Expired - Fee Related JPH0812278B2 (en) | 1987-06-09 | 1987-06-09 | Compressed volume reduction method for solid waste |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0812278B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2523764B2 (en) * | 1988-02-19 | 1996-08-14 | 日本碍子株式会社 | Compressed volume reduction method for solid waste |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59112200U (en) * | 1983-01-20 | 1984-07-28 | 株式会社明電舎 | volume reduction machine |
-
1987
- 1987-06-09 JP JP62143519A patent/JPH0812278B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63307396A (en) | 1988-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4834917A (en) | Encapsulation of waste materials | |
| JPS59138997A (en) | Method and vessel for storing radioactive waste material | |
| JPS5990100A (en) | Wrapping and higher density of granular substance | |
| ES8402111A1 (en) | Method of storing spent fuel rods in a copper container. | |
| US7429239B2 (en) | Methods for melting of materials to be treated | |
| EP0044692A2 (en) | Arrangements for containing waste material | |
| US4280921A (en) | Immobilization of waste material | |
| EP0044381B1 (en) | Method for treating radioactive material and container for enclosing such material | |
| JPH0812278B2 (en) | Compressed volume reduction method for solid waste | |
| CN110290879B (en) | Integrated ion exchange treatment and treatment system | |
| AU597385B2 (en) | Encapsulation of waste materials | |
| JP2523764B2 (en) | Compressed volume reduction method for solid waste | |
| WO1998044834A1 (en) | Large size, thick-walled ceramic containers | |
| JPH0544639B2 (en) | ||
| JP2005164320A (en) | Fusion treatment method for radioactive incombustible solid waste | |
| Mattus | Sulfur polymer cement for macroencapsulation of mixed waste debris | |
| CA2498404C (en) | Apparatus and method for vitrification of contaminated soil or waste | |
| US6143944A (en) | Consolidation process for producing ceramic waste forms | |
| RU2383073C2 (en) | Method for thermal processing high activity solid radioactive wastes | |
| JPS6332399A (en) | Processing vessel for radioactive waste, etc. and manufacture thereof | |
| JPH0420157B2 (en) | ||
| CA1186818A (en) | Arrangements for containing waste material | |
| Braet et al. | Radioactive Spent Ion-Exchange Resins Conditioning by the Hot Supercompaction Process at Tihange NPP–Early Experience-12200 | |
| JP3123270B2 (en) | Radioactive waste treatment method | |
| JPH0260280B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |