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1. 发明专利

JPH07241576A TREATMENT OF WATER USING OZONE 失效
公开(公告)号：JPH07241576A
公开(公告)日：1995-09-19
申请号：JP3623794
申请日：1994-03-08
申请人： FUJI ELECTRIC CO LTD
发明人： SHIGENIWA TAKEO , OKADA MITSUMASA , MOTOYAMA NOBUYUKI , MORIOKA TAKAYUKI , TAKAHASHI RYUTARO
IPC分类号： C02F1/58 , C02F1/78
摘要： PURPOSE:To accelerate the formation of a hydroxyl free radical (OH.) having high oxidizing power by adding nitrilotriacetic acid to water in order to efficiently remove a very small amt. of an org. substance in water. CONSTITUTION:Nitrilotriacetic acid is injected into water to be treated immediately after introduced into a reaction tank and, thereafter, ozone is diffused in the water to be treated introduced into the reaction tank to make chain reaction consisting of hydroxyl free radical forming reaction due to nitrilotriacetic acid and ozone and hydroperoxy free radical (HO2.) forming reaction due to nitrilotriacetic acid and a hydroxyl free radical (OH.) proceed to form a hydroxyl free radical (OH.) and a very small amt. of an org. substance in water can be efficiently decomposed.

2. 发明专利

JPH07246392A WATER TREATMENT USING OZONE 失效
公开(公告)号：JPH07246392A
公开(公告)日：1995-09-26
申请号：JP3747194
申请日：1994-03-09
申请人： FUJI ELECTRIC CO LTD
发明人： SHIGENIWA TAKEO , OKADA MITSUMASA , MOTOYAMA NOBUYUKI , MORIOKA TAKAYUKI , TAKAHASHI RYUTARO
IPC分类号： C02F1/58 , C02F1/78
摘要： PURPOSE:To promote the formation of a highly oxidative hydroxy radical (OH.) by adding oxalic acid to efficiently remove trace org. matter contained in water. CONSTITUTION:Oxalic acid is injected into the water to be treated immediately before being introduced into a reaction tank, then ozone is diffused into the reaction tank, hence a hydroxy radical (OH.) is formed by the chain reaction forming a hydroxy radical (O2.) from oxalic acid and ozone and a hydroperoxy radical (HO2.) from oxalic acid and hydroxy radical (OH.), and trace org. matter in the water is efficiently decomposed.

3. 发明专利

JPH07155775A WATER TREATMENT USING OZONE 失效
公开(公告)号：JPH07155775A
公开(公告)日：1995-06-20
申请号：JP30315193
申请日：1993-12-03
申请人： FUJI ELECTRIC CO LTD
发明人： SHIGENIWA TAKEO , OKADA MITSUMASA , MOTOYAMA NOBUYUKI , MORIOKA TAKAYUKI , TAKAHASHI RYUTARO
IPC分类号： C02F1/78
摘要： PURPOSE:To promote the formation of hydroxyl radical (OH.) having a high oxidizing power by adding glycine to efficiently remove the trace org. matter contained in water. CONSTITUTION:Glycine is injected into water to be treated immediately before being introduced into a reaction tank, ozone is diffused into the reaction tank, hence the hydroxyl radical (OH.) is formed by the chain reaction including a hydroxyl radical forming reaction between the glycine and ozone and a hydroperoxy radical (HO2.) forming reaction between the glycine and hydroxyl radical (OH.), and the trace org. matter in the water is efficiently decomposed.

4. 发明专利

JPH06269786A METHOD FOR CONTROLLING OZONE INJECTION IN WATER TREATING PROCESS 失效
公开(公告)号：JPH06269786A
公开(公告)日：1994-09-27
申请号：JP20706691
申请日：1991-08-20
申请人： FUJI ELECTRIC CO LTD
发明人： SHIGENIWA TAKEO , OKADA MITSUMASA , MOTOYAMA NOBUYUKI , MORIOKA TAKAYUKI , SHIMIZU KOJI , HOSHIKAWA HIROSHI
IPC分类号： C02F1/00 , C02F1/78
摘要： PURPOSE:To inject ozone neither too much nor too little at the time of treating water to remove the musty substance by compensating the effect of the humus and carbonic acid in raw water on the decomposition of musty substance. CONSTITUTION:The ozone generated by an ozonizer 3 is diffused into the raw water contg. musty substance introduced into a reaction tank 1 through a diffuser pipe 2 to decompose the musty substance in the water treating process. The concn. of the total org. carbon(TOC) and total carbonic acid concn. in the raw water are measured by a TOC analyzer 5, an appropriate amt. of ozone necessary to decompose the musty substance in the raw water is obtained by a computing element 6 by using specified algorithm based on the measured values, and the result is outputted to a control part 7 to control the amt. of ozone to be generated from the ozonizer 3.

5. 发明专利

JPH0623377A WATER TREATMENT METHOD USING OZONE 失效
公开(公告)号：JPH0623377A
公开(公告)日：1994-02-01
申请号：JP603892
申请日：1992-01-17
申请人： FUJI ELECTRIC CO LTD
发明人： SHIGENIWA TAKEO , OKADA MITSUMASA , MOTOYAMA NOBUYUKI , MORIOKA TAKAYUKI , SHIMIZU KOJI , TAKAHASHI RYUTARO
IPC分类号： C01B13/10 , C02F1/78
摘要： PURPOSE:To accelerate the decomposition, to miniaturize a reaction tank and to reduce plottage, at a time when ozone is diffused into water to be treated guided to the reaction tank to oxidize and decompose a trace amount of the org. substance in water to be treated, by injecting an aromatic compd. into water to be treated. CONSTITUTION:Ozone from an ozone generator 5 is diffused into water to be treated guided to a reaction tank 1 or water to be treated immediately before introduced into the reaction tank to oxidize and decompose a trace amount of the org. substance contained in water to be treated. At this time, an aromatic compd., for example, one of phenol, benzoic acid and dodecylbenzenesulfonic acid is injected in water to be treated to treat the water to be treated. A hydroxy radical is effectively formed by radical chain reaction having hydroxy radical forming reaction due to an aromatic compd. being an org. substance and ozone and hydroxy radical forming reaction due to the aromatic compd. and a hydroxy radical to efficiently decompose a trace amount of the org. substance.

6. 发明专利

JP2002263647A WATER TREATMENT METHOD AND DEVICE 失效
公开(公告)号：JP2002263647A
公开(公告)日：2002-09-17
申请号：JP2001068754
申请日：2001-03-12
申请人： FUJI ELECTRIC CO LTD , ASAHI KASEI CORP
发明人： KADOKAWA KOMEI , MOTOYAMA NOBUYUKI , MORI YOSHIHIKO , HASHINO MASATOSHI , NISHIJIMA WATARU , OKADA MITSUMASA , SHIGENIWA TAKEO
IPC分类号： C02F1/44 , B01D29/66 , B01D65/02 , B01D65/06 , C02F1/78
摘要： PROBLEM TO BE SOLVED: To provide a water treatment method and device which enhances the washing efficiency of a filter membrane by an ozone-containing water and improve the recovery rate of a membrane-filtered water. SOLUTION: A raw water 1 as the water to be treated is supplied to a membrane module 4 as a membrane filtering treatment device, and a part of the obtained membrane-filtered water 5 is supplied to a tank 6 for forming an ozone-containing hot water, and a remaining water is a treated water 7. The filtered water supplied to the tank 6 for forming the ozone-containing hot water is mixed with the gaseous ozone 9 supplied from an ozone generator 8, and further, the filtered water is heated by an ozone-containing water heating means not shown in Figure belonging to the tank 6 for forming the ozone- containing hot water. The substance adhering to the surface of the membrane can be subjected to ozone treatment more efficiently than a conventional method by using the heated ozone-containing water for washing.

7. 发明专利

JPH11137971A ELECTRIC FILTER DEVICE AND ITS CONTROL METHOD 失效
公开(公告)号：JPH11137971A
公开(公告)日：1999-05-25
申请号：JP31010697
申请日：1997-11-12
申请人： UNIV TOKAI , FUJI ELECTRIC CO LTD
发明人： SHIGENIWA TAKEO , OKADA MITSUMASA , MOTOYAMA NOBUYUKI , MORIOKA TAKAYUKI , TAKAHASHI RYUTARO
IPC分类号： B01D61/42 , B01D35/06 , B01D61/54 , C02F1/46
摘要： PROBLEM TO BE SOLVED: To make it possible to remove the pollutant larger than membrane pore diameter and the decomposed components smaller than the membrane pore diameter by providing the water to be treated side of the device for filtering the polluting materials of the water to be treated by using the membrane with an electrochemical cell consisting of first and second electrodes facing each other and disposing a filter membrane on the filtrate side of the downstream. SOLUTION: The water to be treated is introduced from a water to be treated inlet 4 and is passed through the electrochemical cell comprising the electrodes 2, 3. The charge particles in the water to be treated are moved from the electrode 2 toward the electrode 3 by the voltage impression between the electrodes 2 and 3 to lower the charge particle concn. in the water to be treated. The water to be treated is thereafter filtered by the filter membrane 1 and the filtrate is discharged from a filtrate outlet 5 and the concd. water from a concd. water outlet 6. A target removal rate is calculated from the measured value of the materials to be removed of the water to be treated and the preset target value of the membrane filtrate and the impression electric power on the electrochemical cell is determined by using the target removal rate. The efficient filtration is made possible by controlling the impressed electric power on the electrodes 2, 3.

8. 发明专利

JPH09267096A WATER TREATING DEVICE USING OZONE 失效
公开(公告)号：JPH09267096A
公开(公告)日：1997-10-14
申请号：JP7862496
申请日：1996-04-01
申请人： FUJI ELECTRIC CO LTD
发明人： MORIOKA TAKAYUKI , KATO YASUHIRO , TAKAHASHI RYUTARO , SHIGENIWA TAKEO , OKADA MITSUMASA
IPC分类号： C02F1/00 , C02F1/32 , C02F1/50 , C02F1/72 , C02F1/78
摘要： PROBLEM TO BE SOLVED: To sharply enlarge the removal rate to remove materials difficult to decompose with high efficiency by installing an ultraviolet light irradiating device and an injection port for adding the other oxidizing agent and a catalyst near the utmost lower part of a downcommer. SOLUTION: In the case a downward injection type reaction tank DUT is used, oxygen and ozone gas are fed for treatment from a pure oxygen gas cylinder 15 and a high concentration ozone generator 14 respectively. The flow rate of the ozone gas is controlled by a gas flowmeter 18 to determine the ozone injection rate to the DUT tank 17. Raw water 1 undergoes flow adjustment by a volumetric fixed delivery pump 20 based our the value of a flowmeter 19. To the lower part of a downcommer 9, a UV lamp 21 is fitted. A reaction accelerating catalyst such as ethylenediaminetetraacetic acid, EDTA, and hydrogen peroxide are fed from an injection port 2. And after a trace of ozone contained in waste gas from the reaction tank 17 is decomposed in a waste zone treating device 25, it is released in the air. OH radicals having capacity larger than that of ozone are effectively formed to increase treating capacity.

9. 发明专利

JPH09141276A CONTROLLING METHOD FOR INJECTION AMOUNT OF OZONE IN WATER TREATING PROCESS 失效
公开(公告)号：JPH09141276A
公开(公告)日：1997-06-03
申请号：JP30551295
申请日：1995-11-24
申请人： FUJI ELECTRIC CO LTD
发明人： SHIGENIWA TAKEO , OKADA MITSUMASA , MOTOYAMA NOBUYUKI , MORIOKA TAKAYUKI , HOSHIKAWA HIROSHI , SAKAI EIJI
IPC分类号： C02F1/00 , C02F1/78
摘要： PROBLEM TO BE SOLVED: To completely decompose a mold-odorous material by determining the reaction rate const. in each reaction stage of the decomposition of the mold-odorous material based on a specified parameter of raw water and determining the proper amt. of ozone to be injected necessary to decompose the mold-odorous material. SOLUTION: In an analyzer 6 for analyzing a total org. carbon (TOC) content, the inorg. carbon concn. in the raw water in a reaction tank 1 is measured from the total carbon concn. and the inorg. carbon concn, is substracted from the total carbon concn. to obtain the total org. carbon concn. The obtd. value is sent to computing unit 8, in which total carbonic acid concn. is calculated based on the measured value of the org. carbon concn. The obtd. total carbonic acid concn. is compared to the critical value to determine whether the decomposition of the mold-odorus material is a one-stage pattern or a two-stage pattern based on the relation between the critical value and the total carbonic acid concn. Further, the reaction rate const. is uniquely determined based on a specified parameter of the raw water to determine the amt. of ozone to the injected. The determined value of ozone injection is sent to a controlling part 9 in which the amt. of ozone produced in an ozone generator 5 is controlled by a controlling part 10 to be injected into the reaction tank 1.

10. 发明专利

JPH07241575A TREATMENT OF WATER USING OZONE 失效
公开(公告)号：JPH07241575A
公开(公告)日：1995-09-19
申请号：JP3623694
申请日：1994-03-08
申请人： FUJI ELECTRIC CO LTD
发明人： SHIGENIWA TAKEO , OKADA MITSUMASA , MOTOYAMA NOBUYUKI , MORIOKA TAKAYUKI , TAKAHASHI RYUTARO
IPC分类号： C02F1/58 , C02F1/78
摘要： PURPOSE:To accelerate the formation of a hydroxyl free radical (OH.) having high oxidizing power by adding ethylenediaminediacetic acid to water in order to efficiently remove a very small amt. of an org. substance in water. CONSTITUTION:Ethylenediaminediacetic acid is injected into water to be treated immediately before introduced into a reaction tank and, thereafter, ozone is diffused into the water to be treated introduced into the reaction tank to make chain reaction consisting of hydroxyl free radical forming reaction due to ethylenediaminediacetic acid and ozone and hydroperoxy free radical (HO2.) forming reaction due to ethylenediaminediacetic acid and a hydroxyl free radical (OH.) proceed to form a hydroxyl free radical (OH.) and a very small amt. of an org. substance in water can be efficiently decomposed.

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