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91. 发明专利

JPS62121689A METHOD FOR TREATING BORON-CONTAINING WATER 失效
公开(公告)号：JPS62121689A
公开(公告)日：1987-06-02
申请号：JP25938785
申请日：1985-11-19
申请人： KURITA WATER IND LTD
发明人： ETO YOSHIHIRO , ITO YUKIO , MURAKAMI TAKAFUMI
IPC分类号： C02F1/04 , B01D11/04 , C02F1/26 , C02F1/42
摘要： PURPOSE:To efficiently remove boron, by a method wherein boron-containing water is treated by contact with an anion exchange resin and the used anion exchange resin is contacted with an acid to be regenerated while the waste liquid after regeneration is contacted with an extractant to extract boron. CONSTITUTION:Boron-containing water is supplied to an ion exchange tower 1 from a piping 11 to be treated by contact with an anion exchange resin and treated water is discharged out of the system from piping 12. At a stage wherein the anion exchange resin in the ion exchange tower 1 is saturated with boron, the supply of raw water is stopped and a regeneration liquid is passed through the anion exchange resin to elute boron exchanged and adsorbed by said resin. The waste liquid after regeneration is supplied into an extraction tower 2 from a piping 14 and contacted with an extractant to extract and remove boron. The extractant after the extraction of boron is treated with a counter extractant. The residual extractant is drawn out from a piping 15 to be reutilized. By this method, the effective utilization of a boron compound can be attained.

92. 发明专利

JPS62106805A EXTRACTION DEVICE 失效
公开(公告)号：JPS62106805A
公开(公告)日：1987-05-18
申请号：JP24776985
申请日：1985-11-05
申请人： KURITA WATER IND LTD
发明人： ETO YOSHIHIRO , OHASHI NORIO
IPC分类号： B01D11/04 , B01D65/00
摘要： PURPOSE:To increase the extraction speed and carry out an effective extraction by providing a partition either one side or both sides of the passage of extracting medium and the passage of extraction feed or reverse extracting medium, each comparted with solid membrane, and increase the light of liquid flow channel. CONSTITUTION:The partitions 30 and 34 having the liquid flow openings 30a and 34a respectively between the solid membrane 3 and the casing 10 in the extracting medium chamber 20, and the partitions 32 and 36 having the liquid flow openings 32a and 36a respectively between the solid membrane 1 and the casing 10, are provided. On the other hand, the partitions 38 and 40 comparting the approach chamber for draining extraction liquid residue 18 into the chambers 14a and 14b, and 18a and 18b respectively are provided on the partitions 12 and 16 and the top and bottom of the casing 10. Because of the partitions of 30-36 and 38-40, the flow passage of the extract and the extracting medium in the casing 10 is formed jetting, and the length of flow passage is extended.

93. 发明专利

JPS62106804A EXTRACTION DEVICE 失效
公开(公告)号：JPS62106804A
公开(公告)日：1987-05-18
申请号：JP24776885
申请日：1985-11-05
申请人： KURITA WATER IND LTD
发明人： OHASHI NORIO , ETO YOSHIHIRO
IPC分类号： B01D11/04 , B01D9/02 , B01D61/00 , B01D65/00 , B01D65/08
摘要： PURPOSE:To treat the reverse extracting medium at a high effectivenss of crystallization recovery by providing the means of sending back the reverse extracting medium to the reverse extraction means again, and also providing means of circulating the said reverse extracting medium as it is in the reverse extraction means after sending the reverse extracting medium, which is reversely extracted from the extracting substance and degree of supersaturation of which is raised up, to the means of crystallization for carrying out crystallization. CONSTITUTION:The means of circulation of reverse extracting medium is constituted by the pipings 84 having the pump 82 for sending the reverse extracting medium from the outlet 50 of the extraction means 1, to the pit 3 and the pipings 86 for circulating the reverse extracting medium from the pit 3 to the inlet 84 of the extraction means 1. The said reverse extracting medium is extracted out of the means of circulation by the pipings 90 having the pipings 88 and the pump 92 for extracting the reverse extracting medium out of the pit 3 and sending the same to the inlet 54 of the means of crystallization 2 through the means of degree of supersaturation 4 and also by the pipings 94 sending the extracted drain out of the outlet 56 of the means of crystallization 2 to the pit 3 and the degree of supersaturation of the reverse extracting medium is raised. Then, the treatment of crystallization is carried out to enable the reverse extracting medium to be back.

94. 发明专利

JPS6230899A TREATMENT OF IRON ION-CONTAINING LIQUID 失效
公开(公告)号：JPS6230899A
公开(公告)日：1987-02-09
申请号：JP16834085
申请日：1985-07-30
申请人： KURITA WATER IND LTD
发明人： ETO YOSHIHIRO , OHASHI NORIO , KUDOU MARIKO
IPC分类号： C25D21/18 , B01D11/04
摘要： PURPOSE:To remove iron ions in an iron ion-contg. liquid efficiently and economically by bringing the iron ion-contg. liquid and extracting agent contg. amine into contact with each other then bringing the extracting agent into contact with dithionite to make reverse extraction of the iron ions. CONSTITUTION:The plating bath liquid contg. the iron ions to be discharged from an electrogalvanizing bath 1 to be used for production of an electrogalvanized iron plate is introduced into an extract chamber 3a of an extraction device 3 partitioned by a solid film 2. The liquid is brought into contact with the extracting agent which is introduced into one extracting agent chamber 3b and contains at least one kind of primary quaternary amines via the film 2. The plating bath liquid to be extracted in the above-mentioned method is preferably adjusted to about

95. 发明专利

JPS6227600A TREATMENT OF ELECTROGALVANIZING BATH LIQUID 失效
公开(公告)号：JPS6227600A
公开(公告)日：1987-02-05
申请号：JP16524485
申请日：1985-07-26
申请人： KURITA WATER IND LTD
发明人： ETO YOSHIHIRO , OHASHI NORIO , KUDOU MARIKO
IPC分类号： C25D21/18 , B01D11/04
摘要： PURPOSE:To efficiently remove iron ions in a plating liquid and to make the plating liquid reusable by bringing an iron ion-contg. electrogalvanizing liquid into contact with an amine-contg. extracting agent and reverse extracting the iron ions by using a mineral acid from the said extracting agent. CONSTITUTION:The electrogalvanizing bath liquid 1 contg. the iron ins of about 3>pH is passed via a solid membrane 2 into an extraction chamber 3a of an extracting device 3. The extracting agent contg. >=1 kinds of primary-quaternary amines is passed into the extracting agent chamber 3b and is brought into contact with the plating bath liquid 1 via the solid membrane 2. The extracting agent after the contact is fed to a reverse extracting device 4 where an aq. mineral acid soln. of sulfuric acid, etc. as the reverse extracting agent is dropped into the extracting agent to execute the reverse extraction. The extracting agent after the reverse extracting treat ment is passed through an alkali cleaning column 5 where the agent is cleaned with an alkali; thereafter the agent is again circulated to the extracting device. The plating bath liquid subjected to the extracting treatment is fed to the plat ing bath 1. The iron ions in the plating bath are efficiently removed by the above-mentioned method.

96. 发明专利

JPS625027B2 失效
公开(公告)号：JPS625027B2
公开(公告)日：1987-02-03
申请号：JP10770981
申请日：1981-07-10
申请人： KURITA WATER IND LTD
发明人： ETO YOSHIHIRO , TAKADOI TADASHI , HAJI HIDEKI , MIURA TORAO
IPC分类号： B01D53/50 , B01D53/34 , B01D53/77 , C02F1/52 , C02F11/14

97. 发明专利

JPS6161879B2 失效
公开(公告)号：JPS6161879B2
公开(公告)日：1986-12-27
申请号：JP15117782
申请日：1982-08-31
申请人： KURITA WATER IND LTD
发明人： ETO YOSHIHIRO , ITO YUKIO
IPC分类号： C02F1/42

98. 发明专利

JP2003159594A METHOD FOR TREATING WATER CONTAINING NITRATE NITROGEN 审中-公开
公开(公告)号：JP2003159594A
公开(公告)日：2003-06-03
申请号：JP2001360533
申请日：2001-11-27
申请人： KURITA WATER IND LTD
发明人： TANITSU YOSHIKAZU , NAKAHARA TOSHIJI , ETO YOSHIHIRO
IPC分类号： C02F1/70
摘要： PROBLEM TO BE SOLVED: To provide a method for treating water containing nitrate nitrogen, capable of effectively reducing the nitrate nitrogen by effectively utilizing aluminum, which enables the easy treatment of residual metals, the production of little sludge, and the operation at a low cost. SOLUTION: Metal aluminum-packed layers 2a, 2b, 2c are formed in reaction tanks 1a, 1b, 1c and, when treated water 3a is charged, an alkali solution is injected stage by stage through alkali-injecting conduits 5a, 5b, 5c to dissolve the metal aluminum, reducing the nitrate nitrogen in the treated water by utilizing the reducing environment thus formed. COPYRIGHT: (C)2003,JPO

99. 发明专利

JP2000176438A EXTRACTION METHOD 失效
公开(公告)号：JP2000176438A
公开(公告)日：2000-06-27
申请号：JP36108898
申请日：1998-12-18
申请人： ELECTRIC POWER DEV CO , KANSAI ELECTRIC POWER CO , KURITA WATER IND LTD
发明人： NOGUCHI YOSHIKAZU , MUTO KENICHI , TOYAMA KOJI , YAMASHITA NAOYUKI , ASADA HIROYUKI , ETO YOSHIHIRO
IPC分类号： C02F1/26 , B01D11/04
摘要： PROBLEM TO BE SOLVED: To stably and effectively perform a series of treatments from extraction to crystallizing recovery in by response to a variation in object concentration in water to be treated by adjusting a pH value of stripping agent before stripping based on a pH value after stripping. SOLUTION: A pipeline for feeding stripping agent in which boron has been back extracted in a stripping 3 to a crystallizer 4 is provided with a pH meter 4A to measure pH. And pH of the stripping agent before backward extraction is determined so that pH of stripping agent after backward extraction becomes a predetermined pH value. Based on this result, the operation of a chemical injection pump P2 is controlled. When pH of the stripping agent after stripping for adjusting the added quantity of alkali to a pH adjusting tank 2 is lower than a predetermined pH value, the fed quantity of alkali to the pH adjusting tank 2 is increased so that pH of the stripping agent is raised, and on the contrary, when pH of the stripping agent after backward extraction is higher than the predetermined pH value, the fed quantity of alkali to the pH adjusting tank 2 is reduced so that pH of the stripping agent is lowered. In this way, by increasing or decreasing the fed quantity of alkali, pH of the stripping agent before stripping is adjusted.

100. 发明专利

JP2000167571A TREATMENT OF SELENIUM-CONTAINING WATER 失效
公开(公告)号：JP2000167571A
公开(公告)日：2000-06-20
申请号：JP34429898
申请日：1998-12-03
申请人： KURITA WATER IND LTD
发明人： ETO YOSHIHIRO , ASADA HIROYUKI , MURAKAMI TAKAFUMI
IPC分类号： C02F1/58 , C02F1/70
摘要： PROBLEM TO BE SOLVED: To reduce the addition amt. of a chemical agent and the generation amt. of sludge and to recover water to reutilize the same by evaporating selenium-containing water to concentrate the same and treating conc. water at specific temp. or higher by the contact with metal iron or the addition of an iron (II) salt. SOLUTION: When selenium-containing water such as exhaust gas desulfurization waste water of a lime steam power plant or waste water of petroleum refining factory is treated, selenium-containing water is evaporated to be conc. and conc. water is treated at 60 deg.C or higher by the contact with metal iron or the addition of an iron (II) salt. At this time, pref., the conc.. water is adjusted to pH 3-6 to be brought into contact with metal iron. As metal iron to be used, there is no special limit and, for example, pure iron, alloyed steel, other iron alloy or the like can be designated but metal iron having a large surface area such as fine iron particles, an iron wire or granular iron is pref. Further, there is no special limit with respect to an iron (II) salt, for example, ferrous chloride, ferrous bromide or ferrous iodide can be designated.

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