JP6487158B2 - 放射能汚染海底土処理方法 - Google Patents
放射能汚染海底土処理方法 Download PDFInfo
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- JP6487158B2 JP6487158B2 JP2014142930A JP2014142930A JP6487158B2 JP 6487158 B2 JP6487158 B2 JP 6487158B2 JP 2014142930 A JP2014142930 A JP 2014142930A JP 2014142930 A JP2014142930 A JP 2014142930A JP 6487158 B2 JP6487158 B2 JP 6487158B2
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- soil
- contaminated
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- 230000002285 radioactive effect Effects 0.000 title claims description 32
- 238000000034 method Methods 0.000 title claims description 29
- 239000002689 soil Substances 0.000 claims description 93
- 238000010438 heat treatment Methods 0.000 claims description 17
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 14
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 14
- 238000011109 contamination Methods 0.000 claims description 11
- 229910052792 caesium Inorganic materials 0.000 claims description 9
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000000356 contaminant Substances 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 4
- 229910052791 calcium Inorganic materials 0.000 claims description 4
- 239000011575 calcium Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 150000003377 silicon compounds Chemical class 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000004850 liquid epoxy resins (LERs) Substances 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000003344 environmental pollutant Substances 0.000 description 7
- 231100000719 pollutant Toxicity 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 6
- 230000005855 radiation Effects 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000005251 gamma ray Effects 0.000 description 4
- 239000012188 paraffin wax Substances 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000941 radioactive substance Substances 0.000 description 2
- 229910052705 radium Inorganic materials 0.000 description 2
- HCWPIIXVSYCSAN-UHFFFAOYSA-N radium atom Chemical compound [Ra] HCWPIIXVSYCSAN-UHFFFAOYSA-N 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 description 1
- MFGOFGRYDNHJTA-UHFFFAOYSA-N 2-amino-1-(2-fluorophenyl)ethanol Chemical group NCC(O)C1=CC=CC=C1F MFGOFGRYDNHJTA-UHFFFAOYSA-N 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- HUCVOHYBFXVBRW-UHFFFAOYSA-M caesium hydroxide Inorganic materials [OH-].[Cs+] HUCVOHYBFXVBRW-UHFFFAOYSA-M 0.000 description 1
- TVFDJXOCXUVLDH-OUBTZVSYSA-N cesium-134 Chemical compound [134Cs] TVFDJXOCXUVLDH-OUBTZVSYSA-N 0.000 description 1
- TVFDJXOCXUVLDH-RNFDNDRNSA-N cesium-137 Chemical compound [137Cs] TVFDJXOCXUVLDH-RNFDNDRNSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 1
- -1 for example Chemical compound 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229920000962 poly(amidoamine) Polymers 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 239000012857 radioactive material Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Description
図5に示す計測装置を用いて、コリメートしたγ線を試料に照射し、試料を透過したγ線線量率(μSv/h)を検出器で測定を行い、下記の式より線減衰係数と半価層(cm)を求めた。計測値は10回の計測値の平均を用いた。
(式)I/I0=e−μx=e−(μ/ρ)ρx
μ:線減衰係数,x:厚さ(cm),ρ:密度(g/cm3)
λ=1/μ:平均自由工程,μm=μ/ρ:質量減衰係数(cm2)
D=0.693/μ:半価層(cm)
・耐火ブロック(400×400×30mm,13.3kg,密度2.77g/cm3)12枚
・コンクリート(400×400×30mm,11kg,密度2.3g/cm3)9枚
・鉛ブロック(300×300×10mm,密度11.34g/cm3)5枚
次に、中性子遮蔽計測実験ついて説明する。
(式)I/I0=e−Σx
Σ:巨視的断面積,x:厚さ(cm),λ=1/Σ:平均自由工程(cm)
D=0.693/Σ:半価層(cm)
・耐火ブロック(400×400×30mm,13.3kg,密度2.77g/cm3)12枚
・コンクリート(400×400×30mm,11kg,密度2.3g/cm3)9枚
・パラフィンブロック(200×100×50mm,密度0.9g/cm3)5枚
・鉛ブロック(300×300×10mm,密度11.34g/cm3)5枚
S200 放射能汚染海底土加熱濃縮工程
S300 放射能汚染海底土廃棄処理工程
1 吸引ホース
2 タンカー
3 汚染土壌濃縮装置
31 流入管
32 汚染海底土タンク
33 水蒸気排出管
34 タンク内壁
35 タンク外壁
36 耐火ブロック
37 加熱装置
37´マイクロ波発生装置
40 コーティング剤
Claims (3)
- 海底の放射性セシウムを含む放射能汚染海底土を海上までポンプ装置を用いて引き揚げる放射能汚染海底土吸引工程と、
吸い上げた放射能汚染土壌を珪素又は珪素化合物に鉄、アルミニウム及びカルシウムを添加して溶融、冷却を繰り返して製造された人工鉱石と炭化珪素とよりなる耐火ブロックに覆われた汚染土壌濃縮装置に収容し加熱濃縮させる放射能汚染海底土加熱濃縮工程と、
汚染土壌濃縮装置に残された濃縮された放射能汚染海底土は、前記汚染土壌濃縮装置と共に封止して廃棄する放射能汚染海底土廃棄処理工程と、よりなることを特徴とする放射能汚染海底土処理方法。 - 放射能汚染海底土廃棄処理工程では、固形化した汚染物質を濃縮したタンク本体の全体を人工鉱石を主成分としたコーティング剤により密封状に包被し、かかる包被処理したタンク本体を埋立てや防波堤に利用することを特徴とする請求項1に記載の放射能汚染海底土処理方法。
- 前記コーティング剤は酸化アルミニウムと液状エポキシ樹脂との混合溶液からなる主剤と、前記人工鉱石の粉末とを混合し、これらを硬化させる硬化剤により生成されることを特徴とする請求項2に記載の放射能汚染海底土処理方法。
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JP6487158B2 true JP6487158B2 (ja) | 2019-03-20 |
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JP6159301B2 (ja) * | 2014-07-16 | 2017-07-05 | 小柳建設株式会社 | 放射性物質の処理方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPS6035298A (ja) * | 1983-08-05 | 1985-02-23 | 工業技術院長 | 放射性廃棄物容器 |
US6635796B2 (en) * | 1990-03-16 | 2003-10-21 | Sevenson Environmental Services, Inc. | Reduction of leachability and solubility of radionuclides and radioactive substances in contaminated soils and materials |
JPH0782112B2 (ja) * | 1990-06-12 | 1995-09-06 | 秩父小野田株式会社 | 放射性廃棄物処理容器 |
JPH05264793A (ja) * | 1992-03-18 | 1993-10-12 | Hitachi Ltd | 耐透水性放射性廃棄物固化用容器 |
WO2002079093A1 (fr) * | 2001-03-30 | 2002-10-10 | Hatsuichi Matsumoto | Minerai artificiel et materiau de revetement ou bloc refractaire contenant le minerai artificiel |
JP2014052326A (ja) * | 2012-09-10 | 2014-03-20 | Public Works Research Center | 放射性物質の封じ込め処理方法 |
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