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1. 发明专利

JP2006083056A Method for preparing chlorine dioxide water 有权
标题翻译：二氧化氯水的制备方法
公开(公告)号：JP2006083056A
公开(公告)日：2006-03-30
申请号：JP2005236907
申请日：2005-08-17
申请人： Naigai Kagaku Seihin Kk , 内外化学製品株式会社
发明人： TAKASU MITSUYASU , FUJIGAKI TAEKO
IPC分类号： C01B11/02
摘要： PROBLEM TO BE SOLVED: To provide a method for preparing a chlorine dioxide water with a neutrality, which has a high concentration and is handled easily, at a low cost and comparatively safely.
SOLUTION: The chlorine dioxide water C is prepared by reacting an aqueous chlorite solution S with a solid chlorination agent T. The solid chlorination agent is at least one kind selected from chlorinated isocyanuric acid and its salt and chlorinated hydantoin.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种以低成本且相对安全地制备具有高浓度并易于处理的具有中性的二氧化氯水的方法。解决方案：二氧化氯水C通过使亚氯酸钠水溶液S与固体氯化剂T反应制备。固体氯化剂是选自氯化异氰脲酸及其盐和氯化乙内酰脲中的至少一种。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JP2919765B2 失效
公开(公告)号：JP2919765B2
公开(公告)日：1999-07-19
申请号：JP440995
申请日：1995-01-13
申请人： NAIGAI KAGAKU SEIHIN KK
发明人： FUJIGAKI TAEKO
IPC分类号： F28F19/01 , C02F5/00 , C02F5/08 , C23F11/12 , C23F11/14 , C23F11/18

3. 发明专利

JP2000015271A TREATMENT OF SELENIUM-CONTAINING SOLUTION 失效
公开(公告)号：JP2000015271A
公开(公告)日：2000-01-18
申请号：JP18272298
申请日：1998-06-29
申请人： NAIGAI KAGAKU SEIHIN KK , REALIZE KK
发明人： FUJIGAKI TAEKO , EBATA MIKIO
IPC分类号： C02F1/42 , B01J45/00 , C02F1/58 , C02F1/70
摘要： PROBLEM TO BE SOLVED: To provide an extremely practical method capable of efficiently removing total selenium to a prescribed value of drainage standards or less within a short time by treatment within a normal temp. region at a time of the removal of selenium in a hexavalent selenium-containing soln. and capable of utilizing an existing treatment equipment without almost remodeling the same. SOLUTION: In selenium reducing treatment performed under a non-heating condition by adding a ferrous salt to a hexavalent selenium-containing soln., an org. compd. having chelate forming capacity to ferric ions within an alkaline region is allowed to be present in a treated soln. and the initial pH of the treated soln. is set to 8.5-9.5 to perform reduction and air is blown into the soln. while the pH of the soln. is set to 11 or more after reducing treatment to oxidize a ferrous salt and, after the soln. is neutralized, a precipitate is subjected to solid-liquid separation.

4. 发明专利

JP2923212B2 失效
公开(公告)号：JP2923212B2
公开(公告)日：1999-07-26
申请号：JP24095094
申请日：1994-10-05
申请人： NAIGAI KAGAKU SEIHIN KK
发明人： EBATA MIKIO , FUJIGAKI TAEKO
IPC分类号： B01D21/01 , C02F1/52 , C02F1/62

5. 发明专利

JP2001029965A TREATMENT OF SELENIUM-CONTAINING WASTE WATER 失效
公开(公告)号：JP2001029965A
公开(公告)日：2001-02-06
申请号：JP20861299
申请日：1999-07-23
申请人： NAIGAI KAGAKU SEIHIN KK
发明人： FUJIGAKI TAEKO , EBATA MIKIO
IPC分类号： C02F1/58 , C02F1/70
摘要： PROBLEM TO BE SOLVED: To surely decrease total selenium to a prescribed regulated value or lower of sewage standards with treatment at ordinary temperature and enable existing general treatment equipment to be used by adding a titanium compound having an ion number of trivalent or less to waste water containing hexavalent and tetravalent selenium to reduce selenium. SOLUTION: A titanium compound having an ion number of trivalent or less is added to a waste water containing hexavalent and tetravalent selenium to reduce selenium. The reduction treatment by the addition of the titanium compound is carried out in an acidic region, pH of a liquid reduced by the addition of the titanium compound is set to 5 to 11, and air is blown into the liquid after the reduction, of which the pH has been set so 5 to 11, to aerate the liquid. After ferric hydroxide is added to the sewage containing hexavalent and tetravalent selenium to perform a first stage adsorption treatment, the titanium compound having an ion number of trivalent or less is added to the treated liquid to perform a second stage reduction treatment.

6. 发明专利

JPH11300372A TREATMENT OF SELENIUM-CONTAINING LIQUID 失效
公开(公告)号：JPH11300372A
公开(公告)日：1999-11-02
申请号：JP10901498
申请日：1998-04-20
申请人： NAIGAI KAGAKU SEIHIN KK , REALIZE KK
发明人： FUJIGAKI TAEKO , EBATA MIKIO
IPC分类号： C02F1/58 , C02F1/70
摘要： PROBLEM TO BE SOLVED: To provide an extremely practical means as a method for removing selenium from a selenium(VI)-contg. liq. by which the entire selenium is surely removed below the effluent standard value at ordinary temps. at a low cost and in a short time. SOLUTION: An aq. ferrous salt soln. is added to a selenium(VI)-contg. liq. to perform reduction in a non-heated state. In this case, the liq. being treated is regulated to pH 8.5-9.5 in the first stage, to pH 1.5-7.5 in the second stage and to pH 8.5-9.5 in the third stage, the reduced liq. is kept at >=pH 11, air is blown into the liq. to oxidize the ferrous salt, then the liq. is neutralized to pH 5.8-7, and the precipitates are separated from the liq.

7. 发明专利

JPH08193281A UNDERWATER ANTICORROSIVE 失效
公开(公告)号：JPH08193281A
公开(公告)日：1996-07-30
申请号：JP440995
申请日：1995-01-13
申请人： NAIGAI KAGAKU SEIHIN KK
发明人： FUJIGAKI TAEKO
IPC分类号： F28F19/01 , C02F5/00 , C02F5/08 , C23F11/12 , C23F11/14 , C23F11/18
摘要： PURPOSE: To obtain an underwater anticorrosive having superior function to prevent the corrosion of an iron-based member in flowing water by incorporating Al and a chelating agent made of a polyamine having specified chelating abilities to Al and trivalent Fe. CONSTITUTION: This underwater anticorrosive contains Al and a chelating agent made of a polyamine (e.g. diethylenetriaminepentaacetic acid capable of forming a chelate compd. with Al in an alkali region of >=pH7 and having higher chelating ability to trivalent Fe than that to trivalent Al. It is desirable that the chelating agent and Al are used by nearly equimolar amts. This anticorrosive continuously produces a very high anticorrosive effect even in an aq. system whose pH is liable to rise and does not. generate scale.

8. 发明专利

JPH08103774A TREATMENT OF WASTE WATER 失效
公开(公告)号：JPH08103774A
公开(公告)日：1996-04-23
申请号：JP24095094
申请日：1994-10-05
申请人： NAIGAI KAGAKU SEIHIN KK
发明人： EBATA MIKIO , FUJIGAKI TAEKO
IPC分类号： B01D21/01 , C02F1/52 , C02F1/62
摘要： PURPOSE: To safely, efficiently and certainly remove a heavy metal up to low concn. by a small amt. of a treatment agent by adding alkali metal silicate to waste water containing a heavy metal to sediment the heavy metal and adding a flocculant thereto to separate and remove the floc of a flocculated sediment. CONSTITUTION: Alkali metal silicate is added to waste water containing a heavy metal to sediment the heavy metal and this sediment is flocculated by a flocculant to separate and remove floc. Even when waste water to be treated contains a calcium ion in high concn., the addition amt. of alkali metal silicate may be little by far as compared with the amt. of calcium and, even when alkaline waste water with pH 10 or more is treated, it is unnecessary to preliminarily adjust pH and, by merely adding alkali metal silicate, a heavy metal is reduced up to extremely low concn. sufficiently satisfying new waste water standards. Therefore, this method is extremely useful as a treatment method of heavy metal-containing water with high pH and high calcium concn.

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