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1. 发明专利

JP2002018206A NEW COAGULANT AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JP2002018206A
公开(公告)日：2002-01-22
申请号：JP2000202492
申请日：2000-07-04
申请人： NITTETSU MINING CO LTD , NIPPON STEEL CORP
发明人： ISHII NORITERU , IGARASHI TAIKAKU , KONDO MITSUO , KIMURA HARUO
IPC分类号： B01D21/01
摘要： PROBLEM TO BE SOLVED: To obtain a new coagulant having a higher coagulation effect than that of ferric polysulfate aqueous solution, and to provide its manufacturing method. SOLUTION: The coagulant contains ferric polysulfate and water glass. In the manufacturing method, a water glass aqueous solution is gradually added under stirring of the ferric polysulfate aqueous solution.

2. 发明专利

JPH11319493A SEWAGE TREATING APPARATUS 失效
公开(公告)号：JPH11319493A
公开(公告)日：1999-11-24
申请号：JP13990898
申请日：1998-05-21
申请人： DAIDO HITOSHI , ASO EIJI , KURITA WATER IND LTD , NIPPON STEEL CORP , HITACHI METALS LTD
发明人： DAIDO HITOSHI , ASO EIJI , SAWADA SHIGEKI , SUZUKI KAZUO , FUKUNAGA KAZUHISA , KONDO MITSUO , OCHIAI KAZUNARI , NAGAI MUTSURO
IPC分类号： B01D61/18 , C02F1/44 , C02F3/12
摘要： PROBLEM TO BE SOLVED: To surely obtain treated water having high water quality by specifying the ratio of the plane arrangement area of an aerator and the plane arrangement area of a filter body to a prescribed value or below, thereby making it possible to carry out efficient filtration without increasing filtration resistance with the filter body immersed and arranged within a reaction layer. SOLUTION: This sewage treating apparatus is constituted by forming the front stage side of an aeration layer 2 as an anaerobic zone 2A and the rear stage side as an aerobic zone 2B, immersing and arranging the aerator 3 and the filtration unit 5 into the aerobic zone 2B and disposing a sludge return pipe 10 for returning part of the separated sewage of the settling layer improving aeration layer 4A to the anaerobic zone 2A of the aeration layer 2. Since the sewage treating apparatus is capable of prolonging a biological treatment time and forming anaerobic and aerobic flow patterns, the aperture is capable of dealing with nitrogen removal by the function of denitrification and nitrification of nitrogen. The ratio SB/SF of the plane arrangement area SB of the aerator 7 and the plane arrangement area SF of the filtration unit 8 in at least the settling layer improving aeration layer 4A is specified to

3. 发明专利

JPH10180286A SEWAGE TREATING DEVICE 失效
公开(公告)号：JPH10180286A
公开(公告)日：1998-07-07
申请号：JP34590696
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 , NAGAI MUTSURO , SUZUKI KAZUO , SAWADA SHIGEKI , TAKAHASHI NAOYA , KONDO MITSUO
IPC分类号： B01D63/08 , B01D71/02 , C02F1/44 , C02F3/12
摘要： PROBLEM TO BE SOLVED: To provide a sewage treating device high in durability of a filtering body and also being difficult to be made sludge to be stuck to a surfaces of the filtering body. SOLUTION: In the 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 filtering unit 5, and a buffer tank 3 being a lower water level than the water level of the biological reaction tank 2, the filtering unit 5 has a filtering module 10 having a space holding member 11, a spacer member 12 fixed to its one side, and a filtering film 13 consisting of metallic nonwoven cloth held on the surface of spacer member 12.

4. 发明专利

JPH11319494A SEWAGE TREATING APPARATUS 失效
公开(公告)号：JPH11319494A
公开(公告)日：1999-11-24
申请号：JP13990798
申请日：1998-05-21
申请人： DAIDO HITOSHI , ASO EIJI , KURITA WATER IND LTD , NIPPON STEEL CORP , HITACHI METALS LTD
发明人： DAIDO HITOSHI , ASO EIJI , KISHINE YOSHINAO , SAWADA SHIGEKI , KONDO MITSUO , TAKAHASHI NAOYA , HASEGAWA TETSUO , NAGAI MUTSURO
IPC分类号： B01D61/20 , C02F1/44 , C02F3/12
摘要： PROBLEM TO BE SOLVED: To maintain a filter flow flux and to form a good and dynamic filter layer with a simple and inexpensive apparatus by providing the apparatus with a filtrate water accepting member which is supported at a float in a biological reaction layer and moves vertically according to the water level in a water tank and a tubular member which leads the filtrate water from the inside of a filter body to the accepting member. SOLUTION: The sewage treating apparatus is constituted by hanging a water collecting pipe 11 to accept the filtrate water from a filtration unit 3 at the float 12 floating on the water surface of the aeration layer 1 by means of a suspension 13 absorbing the vibrations of short cycles. The filtrate water from the filtration unit 3 is introduced by a takeout pipe 14 of a flexible pipe and the filtrate water in the water collecting pipe 11 is discharged outside the tank from a discharge pipe 15 of a flexible pipe. Even if the water level of the aeration tank 1 is fluctuated by the increase and decrease of a raw water volume, the flow 12 moves vertically in follow up thereto and, therefore, the water collecting pipe 11 communicating with the float 12 follows up the movement as well and the water level difference L between the water level W1 in the aeration tank 1 and the water level W2 in the water collecting pipe 11 is kept constant at all times. The filter flow flux corresponding to the water level difference may thus be maintained.

5. 发明专利

JPH1119492A ACTIVATED SLUDGE FILTER 失效
公开(公告)号：JPH1119492A
公开(公告)日：1999-01-26
申请号：JP17720297
申请日：1997-07-02
申请人： DAIDOU HITOSHI , ASO EIJI , KURITA WATER IND LTD , NIPPON STEEL CORP , HITACHI METALS LTD
发明人： DAIDOU HITOSHI , ASO EIJI , KISHINE YOSHINAO , SAWADA SHIGEKI , TAKAHASHI NAOYA , KONDO MITSUO , HASEGAWA TETSUO , NAGAI MUTSURO
IPC分类号： B01D69/14 , C02F1/44 , C02F3/12
摘要： PROBLEM TO BE SOLVED: To provide an activated sludge filter by which activated sludge is separated more stably and efficiently. SOLUTION: This filter 1 has a cylindrical nonwoven fabric 4, and the ratio of the major axid D1 of the cross section orthogonal to the cylinder axis to the minor axis D2 is controlled to 1 to 1.5. The shape stability is good as compared with that of a plate filter, the filter bed is not stripped, and a uniform and stable filter bed is formed. Further, the inside is easily cleaned, and the filters are closely packed in a biological reaction tank.

6. 发明专利

JPH10180284A SEWAGE TREATING DEVICE 失效
公开(公告)号：JPH10180284A
公开(公告)日：1998-07-07
申请号：JP34590396
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 , 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 also enabling to obtain stable treated water quality. SOLUTION: In the 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 filtering unit 5, and a buffer tank 3 being a lower water level than the water level of the biological reaction tank 2, the filtering unit 5 has a filtering module 10 consisting of a fiber reinforced type plastic substrate 11 having transmitted water discharge holes and also formed stripped projections on both surfaces and filtering films 12 consisting of metallic nonwoven cloths held at both surfaces of the substrate.

7. 发明专利

JPH10128358A BIOLOGICAL TREATMENT APPARATUS 失效
公开(公告)号：JPH10128358A
公开(公告)日：1998-05-19
申请号：JP28520496
申请日：1996-10-28
申请人： DAIDOU HITOSHI , TAJIMA NORIYUKI , KURITA WATER IND LTD , NIPPON STEEL CORP , HITACHI METALS LTD
发明人： DAIDOU HITOSHI , TAJIMA NORIYUKI , FUKASE TETSURO , IWASAKI KUNIHIRO , TAKAHASHI NAOYA , KONDO MITSUO , HASEGAWA TETSUO , NAGAI MUTSURO
IPC分类号： C02F3/06 , B01D65/02 , C02F1/44
摘要： PROBLEM TO BE SOLVED: To provide a waste water treatment apparatus wherein enough quality of treated water can be achieved even when filtration speed of a filter body is high in a waste water treatment apparatus wherein a filter body with a water-permeable sheet is arranged on the upper part of an aeration part. SOLUTION: A bag-like filter body 1(1A) is prepd. by inserting and laminating a water-permeable porous material 3 for holding an interval such as a sponge between two water-permeable sheets 2 and 2 such as nonwoven fabrics or woven fabrics with the min. reserved particle diameter or 30-1,000μm and sealing tightly the peripheral edges with these water-permeable sheets 2 and 2 to constitute it into a bag shape. A suction pipe 4 is pulled out upward from the top part of a filter body 1A and the apex part is curved downward into an approximately reverse U-shape and is communicated with a sedimentation basin 9. An immersion filter floor 6 consisting of a contact material is provided in a contact aeration tank 5. An aeration pipe 7 is arranged below the immersion filter material 6 and water in the tank is elevated while water in the tank is aerated by air bubbles generated from this aeration pipe 7.

8. 发明专利

JPH08126894A PURIFYING DEVICE FOR POLLUTED WATER 失效
公开(公告)号：JPH08126894A
公开(公告)日：1996-05-21
申请号：JP26589494
申请日：1994-10-28
申请人： NIPPON STEEL CORP
发明人： FUKUNAGA KAZUHISA , KONDO SATOSHI , SAKATA MORIO , KONDO MITSUO
IPC分类号： C02F3/06 , C02F3/10
摘要： PURPOSE: To improve purification efficiency, to efficiently discharge the sludge falling from contact materials and to stably maintain the purification efficiency over a long period by disposing many fibrous cord-like bodies, etc., of specific void volume within a septic tank, forming the bottom of the tank as a tapered surface and forming channel sludge pools at the terminal end thereof. CONSTITUTION: The cord-like bodies or net-like bodies or perforated bodies consisting of the fiber materials having the void volume of >=90% are used as the contact materials and, therefore, the sludge 15 adheres on these contact materials and grow, but falls when the sludge grows to some extent. The clogging of the spacings between the contact materials with this sludge does not arise. The tank bottom below the contact materials is formed as a slope 19c and the sludge pools 19 are formed at the terminal thereof and, therefore, the sludge 15 falling from the contact materials is easily accumulated and deposited in the sludge pools by the slope effect. Since openings 21 are disposed via space parts 18 above the sludge pools 19, the sludge stagnated and deposited in the sludge pools 19 are discharged by occasionally carrying and arranging a sludge discharge robot 20 into the tank from these openings 21.

9. 发明专利

JPS5121305A KOYAITANO HIKIKOMIKOHO OYOBI SOCHI 失效
公开(公告)号：JPS5121305A
公开(公告)日：1976-02-20
申请号：JP9275974
申请日：1974-08-15
申请人： NIPPON STEEL CORP
发明人： SHIRAISHI MOTOO , ADACHI YUKIHIKO , UMIWA HIROYUKI , KONDO MITSUO
IPC分类号： E02D7/26 , E02D7/20

10. 发明专利

JP2000084579A SEWAGE TREATMENT APPARATUS 失效
公开(公告)号：JP2000084579A
公开(公告)日：2000-03-28
申请号：JP25586198
申请日：1998-09-10
申请人： DAIDO HITOSHI , ASO EIJI , HITACHI METALS LTD , KURITA WATER IND LTD , NIPPON STEEL CORP
发明人： DAIDO HITOSHI , ASO EIJI , HASEGAWA TETSUO , NAGAI MUTSURO , SAWADA SHIGEKI , SUZUKI KAZUO , KONDO MITSUO , TAKAHASHI NAOYA
IPC分类号： C02F3/06 , C02F1/44 , C02F3/12
摘要： PROBLEM TO BE SOLVED: To provide a sewage treating apparatus which facilitates the attachment and detachment of filtration units and facilitates maintenance. SOLUTION: This sewage treating apparatus has a bioreaction vessel 1 for storing sewage, plural pieces of the filtration units 3 which are immersed and arranged therein along the flow direction of the sewage and of which the circumferential walls consist at least partly of filter media consisting of water permeable supporting bodies and an aeration means which is disposed in the lower part of the bioreaction vessel 1. The apparatus withdraws the treated water by a head difference between the bioreaction vessel 1 and the succeeding vessels having the water level lower than the water level thereof. The upper part of the bioreaction vessel 1 is provided with a water collecting trough 4 extending along the arranging direction of the filtration units 3. The filtration units 3 are connected to the water collecting trough 4 via discharge pipes having stretchability. The respective discharge pipes are so arranged that their free ends exist at substantially the same height from the water level of the water collecting trough 4. The water level of the water collecting trough 4 is so set as to grade downward along the flow direction of the treated water.

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