JP6841481B2 - 偏光板製造廃液の処理方法 - Google Patents
偏光板製造廃液の処理方法 Download PDFInfo
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- JP6841481B2 JP6841481B2 JP2016103022A JP2016103022A JP6841481B2 JP 6841481 B2 JP6841481 B2 JP 6841481B2 JP 2016103022 A JP2016103022 A JP 2016103022A JP 2016103022 A JP2016103022 A JP 2016103022A JP 6841481 B2 JP6841481 B2 JP 6841481B2
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- polarizing plate
- waste liquid
- plate manufacturing
- manufacturing waste
- treating
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- 239000007788 liquid Substances 0.000 title claims description 79
- 239000002699 waste material Substances 0.000 title claims description 67
- 238000004519 manufacturing process Methods 0.000 title claims description 66
- 238000000034 method Methods 0.000 title claims description 33
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 claims description 46
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 15
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 15
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 13
- 239000004327 boric acid Substances 0.000 claims description 11
- 238000001704 evaporation Methods 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 9
- 238000002425 crystallisation Methods 0.000 claims description 9
- 230000008025 crystallization Effects 0.000 claims description 9
- 230000008020 evaporation Effects 0.000 claims description 7
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 6
- 229910052740 iodine Inorganic materials 0.000 claims description 6
- 239000011630 iodine Substances 0.000 claims description 6
- 239000002244 precipitate Substances 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 5
- 230000005494 condensation Effects 0.000 claims description 5
- 230000002378 acidificating effect Effects 0.000 claims description 4
- 239000012141 concentrate Substances 0.000 claims description 4
- 239000000706 filtrate Substances 0.000 claims description 4
- 239000000243 solution Substances 0.000 description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000010802 sludge Substances 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000000909 electrodialysis Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/12—Iodides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/22—Treatment of water, waste water, or sewage by freezing
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Treating Waste Gases (AREA)
- Polarising Elements (AREA)
Description
2 凝縮工程
3 固液分離工程
4 冷却晶析工程
Claims (2)
- 偏光板製造廃液からヨウ化カリウム溶液を回収する偏光板製造廃液の処理方法であって、
アルカリを添加することなく偏光板製造廃液のpHを3.5〜8.0に維持しながら蒸発濃縮し、ホウ酸およびポリビニルアルコールを含む析出物を生成する濃縮工程と、
偏光板製造廃液から前記析出物を固液分離したろ液を回収する固液分離工程とを備え、
前記濃縮工程と前記固液分離工程との間に、蒸発濃縮後の偏光板製造廃液を冷却晶析する冷却晶析工程を備え、
前記濃縮工程は、偏光板製造廃液を酸性の状態で濃縮する偏光板製造廃液の処理方法。 - 前記濃縮工程で生成された蒸気をヨウ素ガスの回収後に凝縮させる凝縮工程を更に備える請求項1に記載の偏光板製造廃液の処理方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016103022A JP6841481B2 (ja) | 2016-05-24 | 2016-05-24 | 偏光板製造廃液の処理方法 |
TW106109972A TWI750158B (zh) | 2016-05-24 | 2017-03-24 | 偏光板製造廢液之處理方法 |
KR1020170057953A KR102354481B1 (ko) | 2016-05-24 | 2017-05-10 | 편광판 제조폐액의 처리방법 |
CN201710371923.1A CN107416866A (zh) | 2016-05-24 | 2017-05-24 | 偏光板制造废液的处理方法 |
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JP2016103022A JP6841481B2 (ja) | 2016-05-24 | 2016-05-24 | 偏光板製造廃液の処理方法 |
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JP2017209607A JP2017209607A (ja) | 2017-11-30 |
JP6841481B2 true JP6841481B2 (ja) | 2021-03-10 |
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JP2016103022A Active JP6841481B2 (ja) | 2016-05-24 | 2016-05-24 | 偏光板製造廃液の処理方法 |
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JP (1) | JP6841481B2 (ja) |
KR (1) | KR102354481B1 (ja) |
CN (1) | CN107416866A (ja) |
TW (1) | TWI750158B (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7014559B2 (ja) * | 2017-10-02 | 2022-02-01 | 住友化学株式会社 | 偏光フィルムの製造方法 |
JP7260266B2 (ja) * | 2017-10-02 | 2023-04-18 | 住友化学株式会社 | 偏光フィルムの製造装置 |
JP7165344B2 (ja) | 2018-06-06 | 2022-11-04 | 株式会社ササクラ | 偏光板製造廃液の処理方法および処理装置 |
CN109970073B (zh) * | 2019-04-03 | 2020-10-09 | 无锡中天固废处置有限公司 | 一种偏光板废液回收制备硼酸、氯化钾的方法 |
JP7048950B2 (ja) * | 2020-03-27 | 2022-04-06 | 日東電工株式会社 | 偏光板製造廃液の処理方法 |
CN111498861B (zh) * | 2020-04-23 | 2022-07-26 | 无锡中天固废处置有限公司 | 一种偏光板废液处理方法 |
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JPH0631831B2 (ja) * | 1985-03-22 | 1994-04-27 | 株式会社神戸製鋼所 | 放射性再処理オフガスの脱酸素処理方法 |
JPS63256898A (ja) * | 1987-04-14 | 1988-10-24 | 株式会社東芝 | ヨウ素捕集装置 |
JP3942235B2 (ja) * | 1997-05-14 | 2007-07-11 | 栗田工業株式会社 | ホウ素含有水の処理方法 |
JP4058787B2 (ja) * | 1997-12-09 | 2008-03-12 | 栗田工業株式会社 | ホウ素含有水の処理方法 |
JP4478996B2 (ja) | 2000-05-08 | 2010-06-09 | オルガノ株式会社 | 偏光板製造廃液の処理方法 |
JP4649631B2 (ja) * | 2004-09-27 | 2011-03-16 | Jfeエンジニアリング株式会社 | 焼却炉から発生するガスの処理方法 |
JP4674168B2 (ja) * | 2005-01-28 | 2011-04-20 | 日宝化学株式会社 | 排水の処理方法 |
JP4948305B2 (ja) * | 2007-07-23 | 2012-06-06 | 合同資源産業株式会社 | 偏光フィルム製造薬液の循環使用方法及びシステム |
JP4977592B2 (ja) * | 2007-12-14 | 2012-07-18 | オルガノ株式会社 | よう素含有廃液からのよう素回収方法およびよう素回収装置 |
KR101269674B1 (ko) * | 2010-07-12 | 2013-05-30 | 주식회사 엘지화학 | 편광판 제조시 발생된 폐액의 재활용 방법 |
KR101407616B1 (ko) * | 2012-05-23 | 2014-06-13 | 타운마이닝캄파니(주) | 편광필름 제조 공정 폐액으로부터 고순도의 요오드화 칼륨과 붕소화합물을 회수하는 방법 |
KR101650446B1 (ko) * | 2013-10-31 | 2016-08-23 | 주식회사 엘지화학 | 편광판 제조 용액 재생 장치 및 방법 |
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2016
- 2016-05-24 JP JP2016103022A patent/JP6841481B2/ja active Active
-
2017
- 2017-03-24 TW TW106109972A patent/TWI750158B/zh active
- 2017-05-10 KR KR1020170057953A patent/KR102354481B1/ko active IP Right Grant
- 2017-05-24 CN CN201710371923.1A patent/CN107416866A/zh active Pending
Also Published As
Publication number | Publication date |
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TWI750158B (zh) | 2021-12-21 |
KR20170132664A (ko) | 2017-12-04 |
TW201741248A (zh) | 2017-12-01 |
JP2017209607A (ja) | 2017-11-30 |
CN107416866A (zh) | 2017-12-01 |
KR102354481B1 (ko) | 2022-01-20 |
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