JP4670004B2 - セレン含有水の処理方法 - Google Patents
セレン含有水の処理方法 Download PDFInfo
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- JP4670004B2 JP4670004B2 JP2004330281A JP2004330281A JP4670004B2 JP 4670004 B2 JP4670004 B2 JP 4670004B2 JP 2004330281 A JP2004330281 A JP 2004330281A JP 2004330281 A JP2004330281 A JP 2004330281A JP 4670004 B2 JP4670004 B2 JP 4670004B2
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- selenium
- containing water
- ions
- treating
- alkali
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- 239000011669 selenium Substances 0.000 title claims description 126
- 229910052711 selenium Inorganic materials 0.000 title claims description 103
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 title claims description 101
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 48
- 238000000034 method Methods 0.000 title claims description 45
- 239000007788 liquid Substances 0.000 claims description 27
- 238000000926 separation method Methods 0.000 claims description 20
- 239000003513 alkali Substances 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 7
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 4
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 4
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims 1
- 150000001342 alkaline earth metals Chemical class 0.000 claims 1
- 239000002351 wastewater Substances 0.000 description 34
- 150000002500 ions Chemical class 0.000 description 22
- 239000000706 filtrate Substances 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 15
- 238000007254 oxidation reaction Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 238000003723 Smelting Methods 0.000 description 9
- 239000002244 precipitate Substances 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000007800 oxidant agent Substances 0.000 description 8
- 150000003839 salts Chemical class 0.000 description 8
- 229910001422 barium ion Inorganic materials 0.000 description 6
- 239000011575 calcium Substances 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- -1 iron ions Chemical class 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000003672 processing method Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 238000010979 pH adjustment Methods 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 229910052745 lead Inorganic materials 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 150000003342 selenium Chemical class 0.000 description 2
- 229940065287 selenium compound Drugs 0.000 description 2
- 150000003343 selenium compounds Chemical class 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 235000014413 iron hydroxide Nutrition 0.000 description 1
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 150000003623 transition metal compounds Chemical class 0.000 description 1
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- Removal Of Specific Substances (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Description
まず、表1に示すように、12.19mg/LのSe(11.03mg/LのSe4+と1.16mg/LのSe6+を含み、6価のSeイオンの割合が9.5%)、0.032mg/LのBa、163.33mg/LのS、20.08mg/LのNa、33mg/LのCl、38.11mg/LのCa、4.61mg/LのCu、2mg/LのPb、6.25mg/LのZnを含むセレン含有排水1Lを計量してビーカーに入れた。このセレン含有排水に特級試薬のBaCl2・2H2Oを0.50g計量して添加した(Ba添加量282mg/L)ところ、直ちに白濁を生じた。これを5分間撹拌した後、固液分離し、ろ液を分析した(比較例1)。回収されたケーキはごく少量であり、ウェットで重さ1g程度であった。また、BaCl2・2H2Oの添加量を1.00g(Ba添加量565mg/L)(比較例2)、1.50g(Ba添加量847mg/L)(比較例3)と増加して同様の処理を行ったところ、ろ液の白濁の度合いは肉眼では変化がなかった。これらの比較例のろ液の分析結果を表1に示す。表1に示すように、これらの比較例では、セレンの除去率が40%程度に過ぎなかった。
比較例1〜3と同様のセレン含有排水1Lをビーカーに入れるとともに、工業品のCaOのスラリーを添加してpH=11.5にし、室温で反応させ、空気を吹き込み、5分間撹拌した。なお、固体分を除去してろ液を分析した結果を表2に示す。
比較例1〜3と同様のセレン含有排水1Lに対して、それぞれ試薬特級のBa(OH)2・8H2Oを0.50g(実施例4)、1.00g(実施例5)、1.50g(実施例6)計量して添加した(Ba添加量はそれぞれ218mg/L、436mg/L、653mg/L)ところ、液が白濁した。これを5分間撹拌した後、固液分離し、ろ液を分析した。これらの実施例のろ液の分析結果を表3に示す。表3に示すように、これらの実施例では、それぞれ91.8%、99.2%、99.2%のセレンを除去することができた。
Claims (9)
- セレン含有水にアルカリを添加してpH10.5以上にした後、空気を吹き込んで撹拌し、その後Ba化合物を添加し、固液分離することを特徴とする、セレン含有水の処理方法。
- セレン含有水に空気を吹き込んで撹拌し後、アルカリを添加してpH10.5以上にし、その後Ba化合物を添加し、固液分離することを特徴とする、セレン含有水の処理方法。
- 前記アルカリが、アルカリ土類金属の酸化物または水酸化物であることを特徴とする、請求項1または2に記載のセレン含有水の処理方法。
- 前記アルカリ土類金属の酸化物または水酸化物がCaOまたはCa(OH)2であることを特徴とする、請求項3に記載のセレン含有水の処理方法。
- 前記アルカリが、アルカリ金属の水酸化物であることを特徴とする、請求項1または2に記載のセレン含有水の処理方法。
- 前記アルカリ金属の水酸化物がNaOHであることを特徴とする、請求項5に記載のセレン含有水の処理方法。
- pH10.5以上のセレン含有水に空気を吹き込んで撹拌した後、Ba化合物を添加し、固液分離することを特徴とする、セレン含有水の処理方法。
- 前記Ba化合物が、BaCl2またはBa(OH)2あるいはこれらの水和物または水溶液であることを特徴とする、請求項1乃至7のいずれかに記載のセレン含有水の処理方法。
- 前記セレン含有水中のSe濃度が5mg/L以上であることを特徴とする、請求項1乃至8のいずれかに記載のセレン含有水の処理方法。
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JP2004330281A JP4670004B2 (ja) | 2004-11-15 | 2004-11-15 | セレン含有水の処理方法 |
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JP4670004B2 true JP4670004B2 (ja) | 2011-04-13 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101879744B1 (ko) * | 2016-10-18 | 2018-08-17 | 주식회사 한 수 | 폐수 중 셀레늄 제거방법 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4970972B2 (ja) * | 2007-02-05 | 2012-07-11 | Dowaエコシステム株式会社 | セレン含有排水の処理方法 |
JP2010234306A (ja) * | 2009-03-31 | 2010-10-21 | Dowa Eco-System Co Ltd | セレンの不溶化処理方法 |
JP5579414B2 (ja) * | 2009-09-30 | 2014-08-27 | 千代田化工建設株式会社 | 還元性セレン含有排水の処理方法 |
US8282835B2 (en) * | 2010-03-10 | 2012-10-09 | Nalco Company | Removal of selenium from refinery wastewater |
CN110040836A (zh) | 2013-06-28 | 2019-07-23 | 三菱日立电力系统环保株式会社 | 硒去除方法及硒去除装置 |
JP6204146B2 (ja) | 2013-10-16 | 2017-09-27 | 三菱重工業株式会社 | 排水処理方法及び排水処理装置 |
CN104556540B (zh) * | 2013-10-22 | 2016-11-16 | 中国石油化工股份有限公司 | 一种含硒废水的处理方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0578105A (ja) * | 1991-07-23 | 1993-03-30 | Mitsubishi Materials Corp | セレン含有廃水の処理方法 |
JPH0770665A (ja) * | 1993-09-03 | 1995-03-14 | Sumitomo Metal Mining Co Ltd | レニウムと不純物の分離方法 |
JPH0959008A (ja) * | 1995-08-21 | 1997-03-04 | Miyoshi Oil & Fat Co Ltd | セレンを含む溶液からのセレンの回収方法 |
JPH0975954A (ja) * | 1995-09-19 | 1997-03-25 | Mitsui Mining & Smelting Co Ltd | セレン含有廃液中のセレノ硫酸イオンの除去方法 |
US6251283B1 (en) * | 1999-09-03 | 2001-06-26 | Perma-Fix Environmental Services, Inc. | Methods for removing selenium from a waste stream |
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2004
- 2004-11-15 JP JP2004330281A patent/JP4670004B2/ja active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0578105A (ja) * | 1991-07-23 | 1993-03-30 | Mitsubishi Materials Corp | セレン含有廃水の処理方法 |
JPH0770665A (ja) * | 1993-09-03 | 1995-03-14 | Sumitomo Metal Mining Co Ltd | レニウムと不純物の分離方法 |
JPH0959008A (ja) * | 1995-08-21 | 1997-03-04 | Miyoshi Oil & Fat Co Ltd | セレンを含む溶液からのセレンの回収方法 |
JPH0975954A (ja) * | 1995-09-19 | 1997-03-25 | Mitsui Mining & Smelting Co Ltd | セレン含有廃液中のセレノ硫酸イオンの除去方法 |
US6251283B1 (en) * | 1999-09-03 | 2001-06-26 | Perma-Fix Environmental Services, Inc. | Methods for removing selenium from a waste stream |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101879744B1 (ko) * | 2016-10-18 | 2018-08-17 | 주식회사 한 수 | 폐수 중 셀레늄 제거방법 |
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