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1. 发明专利

JPH0857486A METHOD FOR TREATING WASTE WATER CONTAINING FLUORINE 失效
公开(公告)号：JPH0857486A
公开(公告)日：1996-03-05
申请号：JP4499495
申请日：1995-02-10
申请人： KANKYO ENG , NIPPON STEEL CORP
发明人： KITANO YOSHIYUKI , TAKAHASHI NAOYA , NOMURA YUKIHIRO , YAMAMOTO TADAAKI , KOYAMA OSAMU , MURAHASHI TERUYOSHI , FURUMIYA NORIYUKI , YOKOMAKU TOYOICHI
IPC分类号： C02F1/58
摘要： PURPOSE: To provide a method for reducing the concentration of fluorine ions in a waste water containing magnesium ions. CONSTITUTION: When fluorine ions in a waste water containing magnesium ions or magnesium ions and sulfate ions in addition to the fluorine ions are precipitated and removed by adding calcium ions thereto, pH of the waste water is adjusted to 9.4-9.8.

2. 发明专利

JPH09225477A TREATMENT OF FLUORINE-CONTAINING WASTE WATER 失效
公开(公告)号：JPH09225477A
公开(公告)日：1997-09-02
申请号：JP5542996
申请日：1996-02-20
申请人： NIPPON STEEL CORP , KANKYO ENG
发明人： KITANO YOSHIYUKI , TAKAHASHI NAOYA , NOMURA YUKIHIRO , YAMAMOTO TADAAKI , KOYAMA OSAMU , MURAHASHI TERUYOSHI , FURUMIYA NORIYUKI , YOKOMAKU TOYOICHI
IPC分类号： C02F1/58
摘要： PROBLEM TO BE SOLVED: To provide a waste water treating method capable of efficiently removing fluorine ion in a waste water containing magnesium ion or magnesium ion and sulfate ion in addition to fluorine ion at 40-60 deg.C. SOLUTION: The treating method is used for removing fluorine ion in the waste water containing magnesium ion or magnesium ion and sulfate ion in addition to fluorine ion by settling and separating a precipitate obtained by adding calcium ion in the fluorine-containing waste water. In such a case, fluorine ion is removed by adjusting the waste water to be treated to pH 8.2-9.6 when the temp. of the waste water to be treated is 40-60 deg.C.

3. 发明专利

JP2006167533A Method for condensing sea water 审中-公开
标题翻译：冷凝海水的方法
公开(公告)号：JP2006167533A
公开(公告)日：2006-06-29
申请号：JP2004360985
申请日：2004-12-14
申请人： Nippon Steel Corp , Toyama Prefecture , 富山県 , 新日本製鐵株式会社
发明人： KIMURA HARUO , TAKAHASHI NAOYA , KUYO HIDEO , KATO HATSUICHI
IPC分类号： C02F1/44 , B01D61/02 , B01D61/04 , B01D61/14 , B01D61/58
摘要： PROBLEM TO BE SOLVED: To provide a method for efficiently producing condensed sea water of 100 g/L or higher by reverse osmosis membrane treatment.
SOLUTION: In the method for producing the condensed sea water by the reverse osmosis membrane treatment, RO membranes are placed in series, a recovery rate of the condensed sea water in the first step of the reverse osmosis membrane treatment is 40% or lower, a row water supply amount per unit membrane area in the second step of the reverse osmosis membrane treatment is 40% or lower of a row water supply amount per a unit membrane area in the first step of the reverse osmosis membrane treatment, and also an operation pressure in the second step of the reverse osmosis membrane treatment is 8 MPa or higher.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供通过反渗透膜处理有效地生产100g / L以上的凝结海水的方法。解决方案：在通过反渗透膜处理制造冷凝海水的方法中，反渗透膜被串联放置，反渗透膜处理的第一步骤中的冷凝海水的回收率为40％在反渗透膜处理的第一步骤中，反渗透膜处理的第二步骤中每单位膜面积的排水量为单位膜面积的排水量的40％以下，反渗透膜处理的第二工序中的操作压力为8MPa以上。版权所有（C）2006，JPO＆NCIPI

4. 发明专利

JP2003260487A SEWAGE TREATMENT METHOD 审中-公开
公开(公告)号：JP2003260487A
公开(公告)日：2003-09-16
申请号：JP2002065201
申请日：2002-03-11
申请人： NIPPON STEEL CORP , SUZUKI KEN , HATA KENJI , HITACHI METALS LTD , KURITA WATER IND LTD
发明人： SUZUKI KEN , HATA KENJI , TAKAHASHI NAOYA , SAKATA MORIO , HASEGAWA TETSUO , NAGAI MUTSURO , SAWADA SHIGEKI , OYAMA AKIO
IPC分类号： B01D39/08 , B01D37/02 , B01D39/12 , C02F3/12
摘要： PROBLEM TO BE SOLVED: To solve the problem that in dynamic filtration, sludge concentration equipment must be arranged before anaerobic treatment or dehydration treatment when the concentration of excess sludge is not more than 3,000 mg/L and, when the concentration of the activated sludge mixed liquid in a reaction tank becomes high, the filtering flow rate of the filter body must be set low and filter equipment is increased. SOLUTION: A dynamic filteration method is constituted so that filter cloths permitting the activated sludge to pass are provided in a biological reaction tank having an air diffusion pipe immersed and arranged therein and the filter body provided with a filtered water taking-out port is immersed and arranged in the falling flow of turning flow formed by the air diffusion of the air diffusion pipe to form activated layers on the surfaces of the filter cloths and the activated sludge mixed liquid is filtered to take out filtered water. In this method, a filter device divided into a filter part and a concentration part is used in the biological reaction tank to reduce the filtrate flow rate of a concentration part as compared with a filter part not only to make equipment compact but also to increase the concentration of the excess sludge drawn out of the reaction tank. COPYRIGHT: (C)2003,JPO

5. 发明专利

JP2003260483A SEWAGE TREATMENT METHOD 审中-公开
公开(公告)号：JP2003260483A
公开(公告)日：2003-09-16
申请号：JP2002065202
申请日：2002-03-11
申请人： NIPPON STEEL CORP , SUZUKI KEN , HATA KENJI , HITACHI METALS LTD , KURITA WATER IND LTD
发明人： SUZUKI KEN , HATA KENJI , TAKAHASHI NAOYA , SAKATA MORIO , NAGAI MUTSURO , HARADA CHINATSU , TAKEUCHI TADAO , KOBAYASHI TATSUYA
IPC分类号： C02F3/12 , B01D37/02
摘要： PROBLEM TO BE SOLVED: To solve the problem that in dynamic filtration, time is required in the compaction of a filter bed when the concentration of an activated sludge mixed liquid is low while the formed filter bed becomes thick when the concentration of the activated sludge mixed liquid is high, and the number of times for backwashing must be increased and, since filtration is stopped at the time of backwashing, the amount of filtered water to be obtained is reduced as the number of times for backwashing is increased and it is necessary to make the amount of filtered water and the number of times for backwashing proper in order to perform efficient filtration. SOLUTION: A dynamic filtering method is constituted so that filter cloths for permitting activated sludge to pass are provided in a biological reaction tank having an air diffusion pipe arranged therein in a dipped state and a filter body provided with a filtered water taking-out port is immersed in the falling flow of turning flow formed by the air diffusion of the air diffusion pipe to be arranged therein to form activated sludge layers on the surfaces of the filter cloths, and the activated sludge mixed liquid is filtered to take out filtered water. In this method, a filtrate flow rate can be adjusted corresponding to the concentration of the activated sludge mixed liquid in the reaction tank to continue a stable treatment. COPYRIGHT: (C)2003,JPO

6. 发明专利

JP2002219484A DYNAMIC FILTRATION EQUIPMENT 失效
公开(公告)号：JP2002219484A
公开(公告)日：2002-08-06
申请号：JP2001015644
申请日：2001-01-24
申请人： NIPPON STEEL CORP , SUGIMOTO KATSUMI , NAMIKI YOSHINORI , HITACHI METALS LTD , KURITA WATER IND LTD
发明人： SUGIMOTO KATSUMI , NAMIKI YOSHINORI , TAKAHASHI NAOYA , SAKATA MORIO , HASEGAWA TETSUO , NAGAI RIKURO , SUZUKI KAZUO , KOBAYASHI TATSUYA
IPC分类号： B01D65/02 , B01D69/14 , C02F1/44 , C02F3/12 , C02F3/20
摘要： PROBLEM TO BE SOLVED: To prevent the compaction of a filter layer and also to wash the inside of a filter body by properly controlling a filtration flow rate and periodically separating the filter layer formed on the outside surface of a filter fabric by the aeration from the lower side of the filter body for the maintenance of a stable flow rate or the quality of filtrate in a dynamic filtration. SOLUTION: An air diffusing pipe 4 for washing the surface of a filter body 3 and an air diffusing pipe 9 for washing the inside of the filter body branch from an air diffusing pipe 2 for the bioreaction in a reaction tank, and an air diffusing pipe 4 for washing the surface of the filter body 3 is located higher than the air diffusing pipe 2 for the bioreaction in the reaction tank, to provide activated sludge filtration equipment for washing the filter body effectively.

7. 发明专利

JP2001145895A ACTIVATED SLUDGE FILTERING APPARATUS AND ACTIVATED SLUDGE FILTERING METHOD 失效
公开(公告)号：JP2001145895A
公开(公告)日：2001-05-29
申请号：JP32959199
申请日：1999-11-19
申请人： DAIDO HITOSHI , ASO EIJI , HITACHI METALS LTD , KURITA WATER IND LTD , NIPPON STEEL CORP
发明人： DAIDO HITOSHI , ASO EIJI , NAGAI MUTSURO , HASEGAWA TETSUO , SAWADA SHIGEKI , SUZUKI KAZUO , SAKATA MORIO , TAKAHASHI NAOYA
IPC分类号： B01D69/14 , C02F3/12
摘要： PROBLEM TO BE SOLVED: To solve such a problem that SS (activated sludge) flowing in a filtered water chamber through filter cloths 3, 3 is sedimented on a bottom part (the upper surface of a frame body) when filtration is continuted in a filter member having a nonwoven fabric and, if this state is allowed to stand for several days, SS is compacted to become a solidified state to clog a water gathering hole and a filtered water flow passage. SOLUTION: In an activated sludge filtering apparatus wherein a closed space (filtered water chamber) is formed by filter cloth (nonwoven fabric) substantially permitting activated sludge to pass and a support frame for fixing and supporting the filter cloth and filtered water entering the closed space by head difference is discharged out of the closed space through the filtered water flow passage connecting the closed space to the outside, a flow faster than a filtering flow speed is forcibly formed in the filtered water flow passage in order to discharge SS sedimented in the filtered water chamber by continuing filtration out of the filtered water chamber and SS sedimented in the filtered water chamber and a filtered water flow passage is carried by this flow to be discharged along with filtered water.

8. 发明专利

JP2000342911A DYNAMIC FILTER BODY 失效
公开(公告)号：JP2000342911A
公开(公告)日：2000-12-12
申请号：JP16123799
申请日：1999-06-08
申请人： DAIDO HITOSHI , ASO EIJI , KURITA WATER IND LTD , NIPPON STEEL CORP , HITACHI METALS LTD
发明人： DAIDO HITOSHI , ASO EIJI , SUZUKI KAZUO , SAWADA SHIGEKI , SHIBATA TOSHIYUKI , TAKAHASHI NAOYA , OCHIAI KAZUNARI , NAGAI MUTSURO
IPC分类号： B01D29/62 , C02F3/12
摘要： PROBLEM TO BE SOLVED: To provide a dynamic filter body capable of keeping a filter flux stable for a long time by effectively washing even the interior of the filter body to prevent the accumulation of turbidity in the filter body. SOLUTION: A dynamic filter body 3 has a support, the filter cloth provided along the outer surface of the support and having a mesh size permitting suspended particles to substantially pass and a flow channel 5 of filtered water transmitted through the filter cloth and collects suspended particles by the dynamic filter layer formed on the surface of the filter cloth. An air supply means a is provided to the flow channel 5.

9. 发明专利

JPH10180283A SEWAGE TREATING DEVICE 失效
公开(公告)号：JPH10180283A
公开(公告)日：1998-07-07
申请号：JP34590296
申请日：1996-12-25
申请人： DAIDOU HITOSHI , TAJIMA NORIYUKI , HITACHI METALS LTD , KURITA WATER IND LTD , NIPPON STEEL CORP
发明人： DAIDOU HITOSHI , TAJIMA NORIYUKI , HASEGAWA TETSUO , SONOMOTO KAZUHIKO , SUZUKI KAZUO , SAWADA SHIGEKI , TAKAHASHI NAOYA , KONDO MITSUO
IPC分类号： B01D63/08 , B01D29/01 , B01D71/02 , C02F1/44 , C02F3/12
摘要： PROBLEM TO BE SOLVED: To provide a sewage treating device high in durability of a filter body and enabling to obtain stable treated water quality. SOLUTION: In this sewage treating device provided with a biological reaction tank 2, a filtering unit 5 dipped and arranged in the inside, an underwater aerator 4 provided at the lower part of the filter unit 5, and a buffer tank 3 being a lower water level than that of the biological reaction tank 2, the filtering unit 5 has a filtering module 10 having filtering support members 12 allowed to face each other and arranged with a specified spacing and a frame member 11 holding the outer periphery, and the filtering support member 12 consists of a flat woven wire net and a metallic nonwoven cloth stuck to the surface.

10. 发明专利

JPH10128399A APPARATUS AND METHOD FOR CONCENTRATING SLUDGE 失效
公开(公告)号：JPH10128399A
公开(公告)日：1998-05-19
申请号：JP28855496
申请日：1996-10-30
申请人： DAIDOU HITOSHI , TAJIMA NORIYUKI , HITACHI METALS LTD , KURITA WATER IND LTD , NIPPON STEEL CORP
发明人： DAIDOU HITOSHI , TAJIMA NORIYUKI , HASEGAWA TETSUO , NAGAI MUTSURO , IWASAKI KUNIHIRO , MATSUI KENSUKE , TAKAHASHI NAOYA , SAKATA MORIO
IPC分类号： C02F11/12
摘要： PROBLEM TO BE SOLVED: To provide an apparatus and a method for concentrating sludge wherein when the sludge is conc. by gravity, aerobic condition is kept under high controllability to suppress discharge of phosphorus and even such a sludge that exhibits bad performance on concn. by gravity can be sufficiently concentrated. SOLUTION: In a sludge concentrating apparatus wherein a sludge is conc. by settling and close packing by pressing by natural gravity in a sludge concn. tank 1, an aeration means 8 is arranged on the bottom part of the sludge concn. tank 1 and a hollow filter body 9 wherein at least a part of the surrounding wall comprises a water-permeable supporting material is submerged in the sludge conc. tank 1 and a filter membrane is formed on the supporting material by accumulation of the sludge and supernatant is made to flow into the filter body 9 through the filter membrane by water head difference between it and the succeeding tank and the supernatant liquor is extracted from the filter body 9.

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