JP2006218475A - 水処理方法 - Google Patents
水処理方法 Download PDFInfo
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- JP2006218475A JP2006218475A JP2006000915A JP2006000915A JP2006218475A JP 2006218475 A JP2006218475 A JP 2006218475A JP 2006000915 A JP2006000915 A JP 2006000915A JP 2006000915 A JP2006000915 A JP 2006000915A JP 2006218475 A JP2006218475 A JP 2006218475A
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- Prior art keywords
- iodine
- chlorine
- iodide salt
- water
- oxidation step
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910052740 iodine Inorganic materials 0.000 claims abstract description 87
- 239000011630 iodine Substances 0.000 claims abstract description 87
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims abstract description 76
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 31
- XMBWDFGMSWQBCA-UHFFFAOYSA-M iodide Chemical compound [I-] XMBWDFGMSWQBCA-UHFFFAOYSA-M 0.000 claims abstract description 31
- 239000000460 chlorine Substances 0.000 claims abstract description 29
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 29
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 28
- 230000003647 oxidation Effects 0.000 claims abstract description 16
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 16
- -1 iodine ions Chemical class 0.000 claims description 13
- 239000003463 adsorbent Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 claims description 9
- 238000001556 precipitation Methods 0.000 claims description 6
- 239000006228 supernatant Substances 0.000 claims description 6
- 239000004927 clay Substances 0.000 claims description 5
- 239000002244 precipitate Substances 0.000 claims description 5
- 239000002351 wastewater Substances 0.000 abstract description 11
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000007423 decrease Effects 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 description 16
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 13
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 12
- 239000000243 solution Substances 0.000 description 11
- 239000000126 substance Substances 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical compound [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 150000002497 iodine compounds Chemical class 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000000417 fungicide Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000010979 pH adjustment Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 2
- 235000009518 sodium iodide Nutrition 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 229920003169 water-soluble polymer Polymers 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001339 alkali metal compounds Chemical class 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
- 239000003674 animal food additive Substances 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 239000002872 contrast media Substances 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000002363 herbicidal effect Effects 0.000 description 1
- 239000004009 herbicide Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000026045 iodination Effects 0.000 description 1
- 238000006192 iodination reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000013081 microcrystal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229910001961 silver nitrate Inorganic materials 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Images
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- Removal Of Specific Substances (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Water Treatment By Sorption (AREA)
Abstract
を低減させたのち排水化するとともに除去したヨウ素を有効に資源化する容易かつ安価な
方法を提供する。
【解決手段】 有機分が混在するヨウ化物塩を含む水溶液を活性炭処理ならびに二段階の
塩素酸化工程を設けたシステムおよび装置を用いて処理する。
【選択図】 図1
Description
図1に示す装置を用いてヨウ化カリウムを含む廃水を本発明により処理した。先ず、ヨウ化カリウムを含む廃水を表1に示すように濃硫酸を添加してpH調整し、水道水でヨウ素イオン濃度を調整した。また表1に示すようにろ過器(フィルター)3a、3bに活性炭(白鷺:武田薬品工業社製)を充填した。
方法
(1)10%のヨウ化カリウム溶液に下記表5、6中に示す所定量の水溶性高分子(カルボキシメチルセルロースナトリウム(CMC)、ポリビニルアルコール(PVA)500、ポリビニルアルコール(PVA)2000)を添加した。その水溶液185mlを濃硫酸でpH5以下に調整した後、粉状活性炭を添加、30分間攪拌後、吸引ろ過して、活性炭を除去した。
(2)ろ過液の一部をサンプリングして、有機分の濃度変化の指標であるTOC測定に供した。
(3)200mlガラスビーカーにろ過液を移し、ORP電極を入れて、液の酸化還元電位を測定した。同時に、細管ガラスノズルを介して塩素ガスを吹き込んだ。
(4)酸化還元電位が700mVを超えた時点で、塩素ガス吹き込みを中止した。
(5)ヨウ素が析出した液を懸濁し、攪拌を止めた時点から懸濁液の浮遊物が沈殿するまでの時間を測定した。結果を表5〜表7に示す。
2・・・送液ポンプ、
3a・・・ろ過器、
3b・・・ろ過器、
4・・・送液ライン、
5・・・混合器、
6・・・塩素ガス、
7・・・供給ライン、
8a・・・ヨウ素溶液ライン、
8b・・・ヨウ素溶液ライン、
9a・・・反応器、
9b・・・反応器、
10a・・・塩素ガスライン、
10b・・・塩素ガスライン、
11a・・・メルター釜、
11b・・・メルター釜、
12a・・・上澄液排出導管、
12b・・・上澄液排出導管、
13・・・排水、
14・・・ヨウ素、
15a・・・溶融ヨウ素ライン、
15b・・・溶融ヨウ素ライン。
Claims (8)
- ヨウ素および/またはヨウ化物塩含有水に塩素を供給して、含有されているヨウ素および/またはヨウ素イオンを酸化・沈降させることを特徴とするヨウ素の回収方法。
- ヨウ素および/またはヨウ化物塩含有水の有機分を予め吸着剤で除去することを特徴とする請求項1に記載の方法。
- 吸着剤が活性炭または活性白土であることを特徴とする請求項2に記載の方法。
- ヨウ化物塩濃度が0.5〜65.6質量%である請求項1〜3のいずれか一つに記載の方法。
- 吸着剤の使用量がヨウ素および/またはヨウ化物塩含有水1m3に対して0.1〜100kgである請求項2〜4のいずれか一つに記載の方法。
- 給液ラインで連続的に塩素を導入してヨウ素を晶析・沈降させ、その上澄液も連続的に系外に排出することを特徴とする請求項1〜5のいずれか一つに記載の方法。
- ヨウ素および/またはヨウ素イオンの酸化・沈降工程は、前処理塩素酸化工程および主塩素酸化工程を有し、前記前処理塩素酸化工程において、塩素の供給量はヨウ素および/またはヨウ化物塩含有水中のヨウ素イオンに対して0〜0.5当量であり、前処理塩素酸化工程および主塩素酸化工程において、塩素の供給量はヨウ素および/またはヨウ化物塩含有水中のヨウ素イオンに対して合計0.8〜1.5当量である、請求項1〜6のいずれか一つに記載の方法。
- ヨウ素および/またはヨウ化物塩含有水を予めpH0.1〜12に調整する工程をさらに有する請求項1〜7のいずれか一つに記載の方法。
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JP2006000915A JP4758766B2 (ja) | 2005-01-14 | 2006-01-05 | 水処理方法 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017223938A (ja) * | 2016-06-09 | 2017-12-21 | 日本合成化学工業株式会社 | 偏光フィルムの製造方法及び偏光フィルム、偏光板 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0680402A (ja) * | 1992-08-31 | 1994-03-22 | Ise Kagaku Kogyo Kk | ヨウ素の回収法 |
JP2004035302A (ja) * | 2002-07-02 | 2004-02-05 | Daikin Ind Ltd | ヨウ素の回収方法及び回収装置 |
-
2006
- 2006-01-05 JP JP2006000915A patent/JP4758766B2/ja active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0680402A (ja) * | 1992-08-31 | 1994-03-22 | Ise Kagaku Kogyo Kk | ヨウ素の回収法 |
JP2004035302A (ja) * | 2002-07-02 | 2004-02-05 | Daikin Ind Ltd | ヨウ素の回収方法及び回収装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017223938A (ja) * | 2016-06-09 | 2017-12-21 | 日本合成化学工業株式会社 | 偏光フィルムの製造方法及び偏光フィルム、偏光板 |
JP7039862B2 (ja) | 2016-06-09 | 2022-03-23 | 三菱ケミカル株式会社 | 偏光フィルムの製造方法及び偏光フィルム、偏光板 |
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