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1. 发明专利

JP2002029732A METHOD FOR RECOVERING BORIC ACID FROM BORON ELUATE 失效
公开(公告)号：JP2002029732A
公开(公告)日：2002-01-29
申请号：JP2000217631
申请日：2000-07-18
申请人： NIPPON DENKO
发明人： HAYAKAWA SATOSHI
IPC分类号： B01D9/02 , B01J49/00 , C01B35/10
摘要： PROBLEM TO BE SOLVED: To provide a method for efficiently obtaining crystals of boric acid and crystals of a neutral salt such as sodium sulfate. SOLUTION: When boric acid is recovered from a sulfuric acid ion-containing boron eluate produced by adsorbing boron on an ion exchange resin by the treatment of boron-containing waste water and making a sulfuric acid solution pass through the resin to elute the boron, the boron eluate is converted to a mixed solution of boric acid and sodium sulfate by neutralization and this mixed solution is heated and cooled to separately crystallize the boric acid and sodium sulfate by the solubility difference between boric acid and sodium sulfate.

2. 发明专利

JP2001335314A METHOD AND APPARATUS FOR RECOVERING BORON FROM HIGH PURITY BORON-CONTAINING WATER 失效
公开(公告)号：JP2001335314A
公开(公告)日：2001-12-04
申请号：JP2000148755
申请日：2000-05-19
申请人： NIPPON DENKO
发明人： HAYAKAWA SATOSHI , SUZUKI YASUO , KITANI HITONORI
IPC分类号： B01J41/04 , C01B35/10
摘要： PROBLEM TO BE SOLVED: To provide a method of treating a boron eluent containing acid group regenerated from boron adsorbed to an ion-exchange resin by passing an acid solution to obtain a high purity boric acid solution, and provide a treating equipment therefor and a method for producing high purity boric acid using those means. SOLUTION: A boron eluent including acid group which is regenerated from boron adsorbed to the ion-exchange resin and eluted is passed through an ion- exchange column filled with a mixture of a strongly acidic cation-exchange resin modified to a H type and type I or II strongly basic anion-exchange resin modified to an OH type or weakly basic anion-exchange resin modified to the OH type.

3. 发明专利

JP2001316108A BORON ELUATE REFINING EQUIPMENT AND REFINING METHOD 失效
公开(公告)号：JP2001316108A
公开(公告)日：2001-11-13
申请号：JP2000131666
申请日：2000-04-28
申请人： NIPPON DENKO
发明人： HAYAKAWA SATOSHI , SUZUKI YASUO , ISHIDA TORAO
IPC分类号： C02F1/42 , B01J41/04 , C01B35/10
摘要： PROBLEM TO BE SOLVED: To provide refining equipment and a refining method of acid radical containing boron eluate, which enables to obtain a highly pure boric acid solution with a simple process and at a lower facility cost. SOLUTION: In an ion exchange tower 50, an anion exchange resin is packed after being selected from the group of an OH-type adjusted I-type strongly basic anion exchange resin, an OH-type adjusted II-type strongly basic anion exchange resin, and an OH-type adjusted weakly basic anion exchange resin. The acid radical-containing boron eluate passes through the ion exchange tower to remove acid radical and to obtain the highly pure boric acid solution.

4. 发明专利

JPH0824897A TREATMENT OF DRAINAGE CONTAINING HYDROGEN PEROXIDE AND CHROMIUM ION 失效
公开(公告)号：JPH0824897A
公开(公告)日：1996-01-30
申请号：JP16776094
申请日：1994-07-20
申请人： NIPPON DENKO
发明人： KASHIWAGI RYOICHI , HAYAKAWA SATOSHI
IPC分类号： C02F1/42 , C02F1/58 , C02F1/62 , C02F9/00
摘要： PURPOSE:To recover chromium portion from a drainage effectively and make it possible to recycle a treated water by passing drainage containing hydrogen peroxide and chromium ion through a hydrogen peroxide decomposition tower filled with a catalyst, then passing the drainage in which hydrogen peroxide is decomposed through an ion exchange resin tower, and thereby removing chromium ion. CONSTITUTION:Drained water containing hydrogen peroxide and chromium ion generated in a decoloring step is collected into a raw water tank 2 through effluent piping 1, and then is circulated to a hydrogen peroxide decomposition tower 5 filled with granular manganese oxide (IV) using a raw water pump 3. Hydrogen peroxide contained in the drainage is decomposed by a catalytic action of granular manganese oxide, and the concentration of hydrogen peroxide is made to be 100mg/l or less. Next, the drainage is circulated flowing down in ion-exchange resin towers 6, 7, and in this process, chromium ion and other ions are adsorbed and removed. After that, the treated water is collected into a treated water tank 8, then is sent to an original process, using a treated water pump 9 and feed piping 10, and is recycled.

5. 发明专利

JP2004298722A Method for selectively recovering zinc from wastewater 审中-公开
公开(公告)号：JP2004298722A
公开(公告)日：2004-10-28
申请号：JP2003093972
申请日：2003-03-31
申请人： Nippon Denko Kk , 日本電工株式会社
发明人： IMAZU HIDEYUKI , HAYAKAWA SATOSHI
IPC分类号： C02F1/42 , B01J49/00 , C01G9/04 , C02F1/62
摘要： PROBLEM TO BE SOLVED: To propose a novel means for selectively and efficiently recovering zinc from wastewater containing cations including zinc. SOLUTION: The method comprises successively performing the first step of passing wastewater containing cations including zinc through a strongly acidic cation exchange resin or a weakly acidic cation exchange resin to nonselectively adsorb the cations, the second step of passing an aqueous hydrochloric acid solution through the adsorbed-cation-containing cation exchange resin obtained from the first step, the third step of passing the zinc-containing eluate eluted from the second step through a salt-form or free type I or II strongly basic anion exchange resin or a salt-form or free weakly basic anion exchange resin to selectively adsorb zinc therefrom, and the fourth step of passing water through the selectively-adsorbed-zinc-containing ion exchange resin obtained in the third step to obtain an aqueous zinc chloride solution. COPYRIGHT: (C)2005,JPO&NCIPI

6. 发明专利

JP2003094051A METHOD FOR REGENERATING BORON SELECTIVE ADSORPTION RESIN 审中-公开
公开(公告)号：JP2003094051A
公开(公告)日：2003-04-02
申请号：JP2001288777
申请日：2001-09-21
申请人： NIPPON DENKO
发明人： KITANI HITONORI , HAYAKAWA SATOSHI
IPC分类号： C02F1/28 , B01J49/00 , C02F1/42
摘要： PROBLEM TO BE SOLVED: To provide a resin regeneration method without necessity of pH adjustment by adding hydrochloric acid, sulfuric acid, or the like to a treated liquid at an initial stage of further admitting a discharged liquid containing boron, after elutting boron from a boron selective adsorption resin adsorbed boron by using a mineral acid and transforming the boron selective adsorption resin, which is regenerated by admitting a NaOH solution, into free-type. SOLUTION: In subjecting a regeneration treatment, boron adsorbed to the boron selective adsorption resin having an N-methyl glucamine group is eluted by using the mineral acid, and then, the boron selective adsorption resin is transformed into free-type by admitting the NaOH solution. An admitted amount of the NaOH solution is controlled such that pH of a solution surrounding the boron selective adsorption resin is made 7.5 to 8.5 in a condition of carrying out washing and backward washing after admitting the NaOH solution. At this time, it is preferable that the admitted amount of the NaOH solution is controlled such that pH of the solution surrounding the boron selective adsorption resin is adjusted to roughly the same pH as pH of a treated effluent.

7. 发明专利

JP2003094049A BORON-CONTAINING WASTE WATER TREATMENT METHOD 审中-公开
公开(公告)号：JP2003094049A
公开(公告)日：2003-04-02
申请号：JP2001288801
申请日：2001-09-21
申请人： NIPPON DENKO , NIPPON RENSUI KK
发明人： KITANI HITONORI , HAYAKAWA SATOSHI , FURUSHO SABURO
IPC分类号： C02F1/28 , B01J20/26 , B01J49/00 , C02F1/42
摘要： PROBLEM TO BE SOLVED: To provide a boron-containing waste water treatment method which can obtain an eluate, of which the content of contaminants such as Ca ions is very small, from a boron-containing waste water containing cations such as Ca ions, particularly from a boron-containing waste water containing cations such as Ca ions which, at the time of passage of the waste water through an N-methylglucamine-containing boron-selective adsorbing resin, are less likely to be adsorbed to the resin. SOLUTION: When the boron-containing waste water is passed through a boron adsorbing column packed with an N-methylglucamine-containing boron- selective adsorbing resin to remove boron, the boron-containing waste water is adjusted to a pH value of not more than 8.2 before passage through the boron adsorbing column.

8. 发明专利

JP2003010845A Method for recovering high purity boron solution and apparatus therefor 有权
标题翻译：用于回收高纯度硼溶液及其装置的方法
公开(公告)号：JP2003010845A
公开(公告)日：2003-01-14
申请号：JP2001204244
申请日：2001-07-05
申请人： Nippon Denko Kk , Nippon Rensui Co Ltd , 日本錬水株式会社 , 日本電工株式会社
发明人： HAYAKAWA SATOSHI , KITANI HITONORI , FURUSHO SABURO , KONO NORIO
IPC分类号： C02F1/42 , C01B35/10
摘要： PROBLEM TO BE SOLVED: To solve such a problem that the a cation exchange column filled with a strong acidic cation exchange resin has a short life when treating high purity boron solution containing an acidic group.
SOLUTION: The boron containing the acidic anion is passed through an anion exchange column filled with a I or II type strong basic anion exchange resin adjusted to an OH type or a weak basic anion exchange resin adjusted to an OH type. The boron solution passed through this column is further passed through a cation exchange column filled with a strong acidic cation exchange resin adjusted to an H type and further desirably passed through the anion exchange resin filled with the I type or II type strong basic anion exchange resin adjusted to the OH type or the weak basic anion exchange resin adjusted to the OH type.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为了解决在处理含有酸性基团的高纯度硼溶液时，填充有强酸性阳离子交换树脂的阳离子交换柱的寿命短的问题。解决方案：含有酸性阴离子的硼通过填充有I或II型强碱性阴离子交换树脂的阴离子交换柱，该碱性阴离子交换树脂调节为OH型或调节为OH型的弱碱性阴离子交换树脂。通过该柱的硼溶液进一步通过填充有调整为H型的强酸性阳离子交换树脂的阳离子交换柱，并且进一步优选通过填充有I型或II型强碱性阴离子交换树脂的阴离子交换树脂调整为OH型或弱碱性阴离子交换树脂调整为OH型。

9. 发明专利

JP2002233869A REGENERATED ION EXCHANGING COLUMN FOR ADSORBING BORON AND ITS MANAGING METHOD 失效
公开(公告)号：JP2002233869A
公开(公告)日：2002-08-20
申请号：JP2001032567
申请日：2001-02-08
申请人： NIPPON DENKO
发明人： HAYAKAWA SATOSHI , KITANI HITONORI
IPC分类号： C02F1/42 , B01J49/00
摘要： PROBLEM TO BE SOLVED: To provide an ion exchanging column whose boron adsorbing capacity is managed to have the prescribed value and to provide a method for managing the ion exchanging column. SOLUTION: This boron adsorbing ion exchanging column is packed with a I type or II type strongly alkaline anion exchange resin having a quaternary ammonium group whose actual capacity for decomposing neural salt is equal to or higher than the prescribed value. It is preferably that the actual capacity for decomposing neural salt is >=0.5 eq/l-R.

10. 发明专利

JP2001212455A TREATING DEVICE FOR DISCHARGE WATER CONTAINING BORON AND TREATING METHOD THEREFOR 失效
公开(公告)号：JP2001212455A
公开(公告)日：2001-08-07
申请号：JP2000022785
申请日：2000-01-31
申请人： NIPPON DENKO
发明人： HAYAKAWA SATOSHI , HOSOI TATSUYA , ISHIDA TORAO
IPC分类号： B01D15/00 , B01D15/04 , B01J20/26 , B01J39/04 , B01J39/18 , B01J41/04 , B01J47/02 , B01J47/04 , B01J49/00 , C02F1/42
摘要： PROBLEM TO BE SOLVED: To provide a treating method by which the service life of an ion exchange resin tower is prolonged by increasing an adsorption quantity of boron to the ion exchange resin, and the treated water is reutized as high purity ion exchange water. SOLUTION: When discharge water containing boron is treated, cations are adsorbed and removed with a first ion exchange tower 4 filled with a strong cation exchange resin adjusted to an H type, and then anions except boron are adsorbed and removed with a second ion exchange tower 5 filled with a weak basic anion exchange resin adjusted to an OH type or a strong basic anion exchange resin (a I type or a II type) adjusted to an OH type, thus boron is effectively adsorbed and removed with a third ion exchange tower 6 filled with the I type or II type strong basic anion exchange resin adjusted to an OH type.

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