JP4235688B2 - 汚染土の浄化工法 - Google Patents
汚染土の浄化工法 Download PDFInfo
- Publication number
- JP4235688B2 JP4235688B2 JP2004055550A JP2004055550A JP4235688B2 JP 4235688 B2 JP4235688 B2 JP 4235688B2 JP 2004055550 A JP2004055550 A JP 2004055550A JP 2004055550 A JP2004055550 A JP 2004055550A JP 4235688 B2 JP4235688 B2 JP 4235688B2
- Authority
- JP
- Japan
- Prior art keywords
- soil
- water
- contaminated soil
- weight
- washing
- 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
- 239000002689 soil Substances 0.000 title claims description 91
- 238000000034 method Methods 0.000 title claims description 61
- 238000000746 purification Methods 0.000 title claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 229910001385 heavy metal Inorganic materials 0.000 claims description 25
- 238000005406 washing Methods 0.000 claims description 18
- 238000010828 elution Methods 0.000 claims description 14
- 230000006641 stabilisation Effects 0.000 claims description 12
- 238000011105 stabilization Methods 0.000 claims description 12
- 238000011282 treatment Methods 0.000 claims description 12
- 150000001768 cations Chemical class 0.000 claims description 9
- 239000004927 clay Substances 0.000 claims description 9
- 239000004576 sand Substances 0.000 claims description 8
- 241000718541 Tetragastris balsamifera Species 0.000 claims description 3
- 239000010459 dolomite Substances 0.000 claims description 3
- 229910000514 dolomite Inorganic materials 0.000 claims description 3
- 230000003100 immobilizing effect Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 description 23
- 239000010457 zeolite Substances 0.000 description 16
- 239000000126 substance Substances 0.000 description 14
- 229940043430 calcium compound Drugs 0.000 description 9
- 150000001674 calcium compounds Chemical class 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910021536 Zeolite Inorganic materials 0.000 description 8
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- 238000004062 sedimentation Methods 0.000 description 8
- 239000010802 sludge Substances 0.000 description 8
- 150000002505 iron Chemical class 0.000 description 7
- 229910052785 arsenic Inorganic materials 0.000 description 6
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 6
- 238000005341 cation exchange Methods 0.000 description 6
- 150000002681 magnesium compounds Chemical class 0.000 description 6
- 150000001450 anions Chemical class 0.000 description 5
- 238000005345 coagulation Methods 0.000 description 5
- 230000015271 coagulation Effects 0.000 description 5
- 238000011109 contamination Methods 0.000 description 5
- 239000013049 sediment Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 4
- 239000003673 groundwater Substances 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 235000010755 mineral Nutrition 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 239000011575 calcium Substances 0.000 description 3
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- 235000012255 calcium oxide Nutrition 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002734 clay mineral Substances 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 239000000383 hazardous chemical Substances 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 229910052711 selenium Inorganic materials 0.000 description 2
- 239000011669 selenium Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- DJHGAFSJWGLOIV-UHFFFAOYSA-K Arsenate3- Chemical compound [O-][As]([O-])([O-])=O DJHGAFSJWGLOIV-UHFFFAOYSA-K 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910001579 aluminosilicate mineral Inorganic materials 0.000 description 1
- -1 aluminum ions Chemical class 0.000 description 1
- JYIBXUUINYLWLR-UHFFFAOYSA-N aluminum;calcium;potassium;silicon;sodium;trihydrate Chemical compound O.O.O.[Na].[Al].[Si].[K].[Ca] JYIBXUUINYLWLR-UHFFFAOYSA-N 0.000 description 1
- 229940006020 arsenite ion Drugs 0.000 description 1
- OWTFKEBRIAXSMO-UHFFFAOYSA-N arsenite(3-) Chemical compound [O-][As]([O-])[O-] OWTFKEBRIAXSMO-UHFFFAOYSA-N 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 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
- 230000033228 biological regulation Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 229910001603 clinoptilolite Inorganic materials 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000001784 detoxification Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052680 mordenite Inorganic materials 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003809 water extraction Methods 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Description
2:水処理工程
3:土壌安定化工程
10:トロンメル型回転式洗浄機
11:重力沈降式分離・土砂脱水篩
12:安定化処理工程
13:沈砂池
14:酸化反応槽
15:凝集沈殿槽
16:スラリー槽
17:フィルタープレス
Claims (1)
- 重金属の汚染土を水で洗浄して洗浄と分級の処理を行い、74μm以下の土を含む洗浄濁水と、5mm以上の礫と75μm〜5mmの砂とからなる洗浄処理土に分離する洗浄工程と、前記洗浄処理土100重量部に対して、火山性ローム又はまさ土からなる粘性土5〜30重量部、陽イオン交換体1〜15重量部、及びドロマイト1〜10重量部を混合して、重金属の溶出成分を固定化する処理を行う土壌安定化工程を有し、前記洗浄工程において分離された洗浄濁水は、その後、水処理工程で、処理水と、重金属を含む固形物に分離されることを特徴とする汚染土の浄化工法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004055550A JP4235688B2 (ja) | 2004-02-27 | 2004-02-27 | 汚染土の浄化工法 |
KR1020040038144A KR100716330B1 (ko) | 2004-02-27 | 2004-05-28 | 오염토의 정화 방법 |
CNB2004100766074A CN100377800C (zh) | 2004-02-27 | 2004-07-26 | 污染土的净化方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004055550A JP4235688B2 (ja) | 2004-02-27 | 2004-02-27 | 汚染土の浄化工法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005238207A JP2005238207A (ja) | 2005-09-08 |
JP4235688B2 true JP4235688B2 (ja) | 2009-03-11 |
Family
ID=35010241
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004055550A Expired - Fee Related JP4235688B2 (ja) | 2004-02-27 | 2004-02-27 | 汚染土の浄化工法 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP4235688B2 (ja) |
KR (1) | KR100716330B1 (ja) |
CN (1) | CN100377800C (ja) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007175585A (ja) * | 2005-12-27 | 2007-07-12 | Tokuyama Corp | 汚染土壌の処理方法 |
JP4343259B1 (ja) * | 2008-11-07 | 2009-10-14 | 太平洋セメント株式会社 | 不溶化材 |
JP5068245B2 (ja) * | 2008-12-04 | 2012-11-07 | 太平洋セメント株式会社 | 不溶化材 |
JP4481360B1 (ja) * | 2009-10-05 | 2010-06-16 | 太平洋セメント株式会社 | 不溶化材 |
JP4844906B2 (ja) * | 2009-12-24 | 2011-12-28 | 新東工業株式会社 | 固形物質からの汚染物質除去方法および除去システム |
JP5541986B2 (ja) * | 2010-07-06 | 2014-07-09 | 株式会社オメガ | 土壌の洗浄方法 |
WO2012020449A1 (ja) * | 2010-08-10 | 2012-02-16 | 太平洋セメント株式会社 | カドミウム含有水田土壌の浄化方法 |
JP5747470B2 (ja) * | 2010-10-07 | 2015-07-15 | 清水建設株式会社 | 砒素汚染土壌の洗浄方法 |
CN102303042B (zh) * | 2011-05-31 | 2013-06-05 | 北京师范大学 | 一种污染土壤洗涤修复的循环洗涤系统装置及方法 |
FR2990364B1 (fr) * | 2012-05-11 | 2014-06-13 | Commissariat Energie Atomique | Procede de decontamination radioactive d'une terre par mousse de flottation a air disperse et ladite mousse |
JP6056209B2 (ja) * | 2012-06-14 | 2017-01-11 | 株式会社大林組 | コア生成装置およびコア生成方法 |
CN102873086B (zh) * | 2012-10-09 | 2014-03-26 | 北京大学 | 汞污染土壤原位修复方法 |
JP2014227457A (ja) * | 2013-05-21 | 2014-12-08 | 三菱マテリアルテクノ株式会社 | 重金属等の不溶化剤及び不溶化方法 |
CN105682813B (zh) * | 2013-10-28 | 2020-05-05 | 吉野石膏株式会社 | 特定有害物质的不溶化材料及使用该材料的不溶化方法 |
CN103755113B (zh) * | 2014-01-22 | 2015-11-04 | 厦门添福运环保科技股份有限公司 | 污泥重金属离子吸附固离法 |
CN103785682B (zh) * | 2014-03-05 | 2016-04-06 | 中国环境科学研究院 | 一种促进汞污染土壤热处理修复的方法 |
CN104014583B (zh) * | 2014-06-10 | 2016-01-20 | 苏州同和环保工程有限公司 | 一种重金属污染土壤淋洗和重金属浓缩化方法及其设备 |
CN104174635B (zh) * | 2014-09-03 | 2016-06-22 | 广西博世科环保科技股份有限公司 | 含汞废渣的处理方法及处理设备 |
JP6493728B2 (ja) * | 2014-09-24 | 2019-04-03 | 国立大学法人金沢大学 | 汚染土壌の処理方法 |
CN106281341A (zh) * | 2015-05-18 | 2017-01-04 | 南京凯杰环境技术有限公司 | 一种土壤重金属高效清洁处理材料 |
CN104874601A (zh) * | 2015-06-03 | 2015-09-02 | 天津工业大学 | 一种基于竞争吸附的镉污染稻田的原位快速修复方法 |
CN105170630B (zh) * | 2015-10-27 | 2018-05-18 | 华东理工大学 | 一种组合式土壤洗涤脱附的方法和装置 |
EP4140607A1 (en) | 2021-08-27 | 2023-03-01 | Holcim Technology Ltd | Method for the treatment of soils and slurries contaminated by heavy metals |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3676672B2 (ja) * | 1999-12-10 | 2005-07-27 | 株式会社アステック | 汚染土壌の改質方法及び汚泥の改質方法 |
JP2003159583A (ja) * | 2001-11-27 | 2003-06-03 | Kurita Water Ind Ltd | 重金属汚染土壌又は廃棄物の処理方法 |
JP3980932B2 (ja) * | 2002-05-22 | 2007-09-26 | 株式会社錢高組 | 汚染土壌の洗浄方法 |
-
2004
- 2004-02-27 JP JP2004055550A patent/JP4235688B2/ja not_active Expired - Fee Related
- 2004-05-28 KR KR1020040038144A patent/KR100716330B1/ko not_active IP Right Cessation
- 2004-07-26 CN CNB2004100766074A patent/CN100377800C/zh not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2005238207A (ja) | 2005-09-08 |
KR100716330B1 (ko) | 2007-05-11 |
CN100377800C (zh) | 2008-04-02 |
KR20050087698A (ko) | 2005-08-31 |
CN1660515A (zh) | 2005-08-31 |
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