JP5719320B2 - 亜鉛めっき廃液からの亜鉛回収方法 - Google Patents
亜鉛めっき廃液からの亜鉛回収方法 Download PDFInfo
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- JP5719320B2 JP5719320B2 JP2012015583A JP2012015583A JP5719320B2 JP 5719320 B2 JP5719320 B2 JP 5719320B2 JP 2012015583 A JP2012015583 A JP 2012015583A JP 2012015583 A JP2012015583 A JP 2012015583A JP 5719320 B2 JP5719320 B2 JP 5719320B2
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- 239000007788 liquid Substances 0.000 title claims description 77
- 239000011701 zinc Substances 0.000 title claims description 77
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims description 73
- 229910052725 zinc Inorganic materials 0.000 title claims description 73
- 239000002699 waste material Substances 0.000 title claims description 47
- 238000000034 method Methods 0.000 title claims description 32
- 238000005246 galvanizing Methods 0.000 title claims description 20
- 238000011084 recovery Methods 0.000 title claims description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 100
- 229910052742 iron Inorganic materials 0.000 claims description 59
- 238000007254 oxidation reaction Methods 0.000 claims description 38
- 230000003647 oxidation Effects 0.000 claims description 36
- 238000000926 separation method Methods 0.000 claims description 31
- 239000003513 alkali Substances 0.000 claims description 29
- -1 iron ions Chemical class 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 229910001385 heavy metal Inorganic materials 0.000 claims description 17
- 239000002738 chelating agent Substances 0.000 claims description 13
- 238000007747 plating Methods 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 229960004887 ferric hydroxide Drugs 0.000 claims description 12
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 claims description 12
- 150000003839 salts Chemical class 0.000 claims description 12
- 238000010979 pH adjustment Methods 0.000 claims description 9
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 239000005083 Zinc sulfide Substances 0.000 claims description 5
- 230000001590 oxidative effect Effects 0.000 claims description 5
- 230000001376 precipitating effect Effects 0.000 claims description 5
- 229910052984 zinc sulfide Inorganic materials 0.000 claims description 5
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 4
- UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical compound [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 claims description 4
- 229910021511 zinc hydroxide Inorganic materials 0.000 claims description 4
- 229940007718 zinc hydroxide Drugs 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- 239000000243 solution Substances 0.000 description 15
- 239000002244 precipitate Substances 0.000 description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 229910052793 cadmium Inorganic materials 0.000 description 5
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 5
- 238000010790 dilution Methods 0.000 description 5
- 239000012895 dilution Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 239000008235 industrial water Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 238000006386 neutralization reaction Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 230000033116 oxidation-reduction process Effects 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- HYHCSLBZRBJJCH-UHFFFAOYSA-M sodium hydrosulfide Chemical compound [Na+].[SH-] HYHCSLBZRBJJCH-UHFFFAOYSA-M 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 2
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 235000014413 iron hydroxide Nutrition 0.000 description 2
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 229910052979 sodium sulfide Inorganic materials 0.000 description 2
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 2
- 229960001763 zinc sulfate Drugs 0.000 description 2
- 229910000368 zinc sulfate Inorganic materials 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- KFZAUHNPPZCSCR-UHFFFAOYSA-N iron zinc Chemical compound [Fe].[Zn] KFZAUHNPPZCSCR-UHFFFAOYSA-N 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 150000003388 sodium compounds Chemical class 0.000 description 1
- 239000008247 solid mixture Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 150000003752 zinc compounds Chemical class 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Images
Classifications
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Removal Of Specific Substances (AREA)
Description
Claims (5)
- 亜鉛イオンを10,000mg/L以上および2価の鉄イオンを3,000mg/L以上含有し、さらに重金属を含有する亜鉛めっき廃液にアルカリを添加してpHを4.5〜5.5の範囲に維持しながら、空気を吹き込み、2価の鉄イオンを3価の鉄イオンに酸化した後、水酸化第二鉄として析出させる空気酸化処理工程と、前記空気酸化処理工程で得られた処理液に重金属を不溶性の塩に変えるキレート剤を添加した後、固液分離する第一固液分離工程と、前記第一固液分離工程で得られた分離液にアルカリを添加してpHを8〜11に調整し、水酸化亜鉛を析出させるpH調整処理工程と、前記pH調整処理工程で得られた処理液を固液分離する第二固液分離工程と、前記第二固液分離工程で得られた固形物を洗浄して、乾燥重量あたり亜鉛を40%以上含有する亜鉛組成物を回収する亜鉛回収工程を具備することを特徴とする亜鉛めっき廃液からの亜鉛回収方法。
- 前記亜鉛めっき廃液に水を加えて2〜6倍に希釈した後、前記空気酸化処理を施すことを特徴とする請求項1記載の亜鉛めっき廃液からの亜鉛回収方法。
- 亜鉛イオンを10,000mg/L以上および2価の鉄イオンを3,000mg/L以上含有し、さらに重金属を含有する亜鉛めっき廃液にアルカリを添加してpHを4.5〜5.5の範囲に維持しながら、空気を吹き込み、2価の鉄イオンを3価の鉄イオンに酸化した後、水酸化第二鉄として析出させる空気酸化処理工程と、前記空気酸化処理工程で得られた処理液に重金属を不溶性の塩に変えるキレート剤を添加した後、固液分離する第一固液分離工程と、前記第一固液分離工程で得られた分離液にアルカリと硫化剤を添加してpHを8〜11に調整し、水酸化亜鉛および硫化亜鉛を析出させるpH調整処理工程と、前記pH調整処理工程で得られた処理液を固液分離する第二固液分離工程と、前記第二固液分離工程で得られた固形物を洗浄して、乾燥重量あたり亜鉛を40%以上含有する亜鉛組成物を回収する亜鉛回収工程を具備することを特徴とする亜鉛めっき廃液からの亜鉛回収方法。
- 前記亜鉛めっき廃液に水を加えて2〜6倍に希釈した後、前記空気酸化処理を施すことを特徴とする請求項3に記載の亜鉛めっき廃液からの亜鉛回収方法。
- 前記キレート剤の添加量が前記空気酸化処理工程で得られた廃液重量に対して0.2〜2%であることを特徴とする請求項1乃至請求項4のいずれか1項に記載の亜鉛めっき廃液からの亜鉛回収方法。
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CN115716654A (zh) * | 2021-08-24 | 2023-02-28 | 斯瑞尔环境科技股份有限公司 | 一种含锌含铁废酸的资源化利用方法 |
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JPS61261446A (ja) * | 1985-05-15 | 1986-11-19 | Sumitomo Metal Ind Ltd | Zn含有物よりZnを回収する方法 |
US4680126A (en) * | 1986-02-18 | 1987-07-14 | Frankard James M | Separation and recovery of reusable heavy metal hydroxides from metal finishing wastewaters |
JP3842907B2 (ja) * | 1998-10-09 | 2006-11-08 | 新日本製鐵株式会社 | 金属含有排水の処理および有価金属の回収方法 |
JP2002030352A (ja) * | 2000-07-11 | 2002-01-31 | Nippon Steel Corp | 金属含有排水からの有価金属の回収方法 |
JP4235094B2 (ja) * | 2002-12-09 | 2009-03-04 | 新日本製鐵株式会社 | 金属鉱山排水の処理方法および有価金属の回収方法 |
JP2008266774A (ja) * | 2007-03-29 | 2008-11-06 | Nikko Kinzoku Kk | 亜鉛の回収方法 |
JP5471054B2 (ja) * | 2009-06-11 | 2014-04-16 | 栗田工業株式会社 | メッキ洗浄排水からの水及び金属の回収方法 |
JP5444024B2 (ja) * | 2010-01-29 | 2014-03-19 | Jfeエンジニアリング株式会社 | 亜鉛めっき廃液の資源化方法 |
JP5512482B2 (ja) * | 2010-10-08 | 2014-06-04 | Jfeエンジニアリング株式会社 | 亜鉛めっき廃液からの亜鉛の分離回収方法 |
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