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1. 发明专利

JPS63282179A PRODUCTION OF POROUS CERAMICS 失效
公开(公告)号：JPS63282179A
公开(公告)日：1988-11-18
申请号：JP11663787
申请日：1987-05-12
申请人： NIPPON STEEL CORP , KUROSAKI REFRACTORIES CO
发明人： FUJII MASAHIRO , MIKI OSAMU , TAKEZAKI YOSHINORI , MASUDA TOSHIHIDE , YAMASHIRO HIROTAKA , MATSUO YUKIHISA
IPC分类号： C04B38/00
摘要： PURPOSE:To produce porous ceramics which does not require calcination and does not produce gas generated by decomposition of urethane by impregnating a specific slurry into a polyurethane foam from which cell membranes are removed and curing the foam. CONSTITUTION:The slurry is obtd. by adding 0.1-3wt.% water reducing agent (e.g.: condensed sodium naphthalene sulfonate) and water to a compd. consisting of 50-90wt.% ceramics powder (e.g.: Al2O3) having

2. 发明专利

JPS63287596A FIXED-BED TYPE ACTIVATED-SLUDGE TREATMENT OF WASTE WATER 失效
公开(公告)号：JPS63287596A
公开(公告)日：1988-11-24
申请号：JP12249687
申请日：1987-05-21
申请人： NIPPON STEEL CORP , KUROSAKI REFRACTORIES CO
发明人： FUJII MASAHIRO , MIKI OSAMU , TAKEZAKI YOSHINORI , YAMASHIRO HIROTAKA , MASUDA TOSHIHIDE , MATSUO YUKIHISA
IPC分类号： C02F3/06 , C02F3/10
摘要： PURPOSE:To treat waste water with high efficiency by coating a water-added mixture of fine inorg. powder and hydraulic cement on a spongy resin, curing the mixture to obtain a carrier, depositing the microbes for decomposing the contaminant in waste water on the carrier, and passing the water through the carrier. CONSTITUTION:The water-added mixture of the fine inorg. powder consisting essentially of the water-granulated material from a blast furnace and hydraulic cement is coated on the spongy high molecular resin (e.g., polyurethane foam). The mixture is cured at

3. 发明专利

JPH06210297A BIOLOGICAL TREATMENT AND ACCLIMATION OF MICROBES 失效
公开(公告)号：JPH06210297A
公开(公告)日：1994-08-02
申请号：JP2344793
申请日：1993-01-20
申请人： NIPPON STEEL CORP
发明人： KAMORI YASUSHI , FUJII MASAHIRO , MIKI OSAMU , MAEDA KAZUJI , NAGAYA KOJI
IPC分类号： C02F3/08 , C02F1/24 , C02F3/00 , C02F3/10 , C02F3/12 , C02F9/00
摘要： PURPOSE:To make it possible to treat water drained from a step of manufacturing cold-rolled steel sheets at high efficiency after pressurized floatation by treating drained water using microbes acclimatized with the help of activated mud or sludge for treating sewage and industrial waste water in a fluidized bed-type bioreactor. CONSTITUTION:An activated mud mixed liquid for treatment of sewage and industrial waste water is poured into a fluidized bed-type bioreactor 1, and water drained from a cold-rolled steel sheet manufacturing step is gradually supplied while maintaining the conditions suited for the decomposition of a COD component contained in the drained water after pressurized floatation. Thus, microbes which decompose the COD component by oxidation are allowed to proliferate easily. In this case, if a suspended substance which contains a sufficient amount of flocculating agent generated at the time of pressurized floatation is added thereto, activated mud is granulated, then the washout of useful microbes decrease and the microbes are easily acclimatized. As described, water drained from a step of manufacturing the cold-rolled steel sheet after pressurized floatation is treated by using the microbes which decompose the COD component used for the acclimation and culture of the microbe.

4. 发明专利

JPH06206086A BIOLOGICAL TREATMENT OF WASTE LIQUID AND ACCLIMATION OF MICROORGANISM 失效
公开(公告)号：JPH06206086A
公开(公告)日：1994-07-26
申请号：JP1681093
申请日：1993-01-08
申请人： NIPPON STEEL CORP
发明人： KAMORI YASUSHI , FUJII MASAHIRO , MIKI OSAMU , MAEDA KAZUJI , NAGAYA KOJI
IPC分类号： C02F3/12 , C02F3/06 , C02F3/10
摘要： PURPOSE:To eliminate the need for a large-scale reactor and provide a reactor easy to maintain and applicable to treatment of the waste liq. containing a large amt. of surfactant by treating the waste liq. with activated sludge or microorganisms through a fixed bed type bioreactor in treating the waste liq. resulting from the process of manufacturing cold rolled steel plate after the pressure flotation treatment. CONSTITUTION:A method for biological treatment of the waste liq. resulting from the process of manufacturing cold rolled steel plate after the pressure flotation treatment features introducing a mixture of activated sludge and waste liq. undergoing sewage treatment into a fixed bed type bioreactor 1, blowing air from an air diffusing pipe located below into the reactor by a roots blower 8 for a day, fixing the activated sludge on the net-like plastic packed in the reactor 1 while circulating the aforesaid mixture through an air lift pipe 10 provided in the central part of the reactor 1, thereafter feeding into the reactor the waste liq. resulting from the process of manufacturing cold rolled steel plate after the pressure flotation treatment for the reactor treatment over a period of 8 hours and filtering the reactor-treated liq. by the upstream current passage through a filtration device 2 to obtain a satisfactorily treated liq.

5. 发明专利

JPH06142694A HIGH LEVEL TREATING METHOD FOR AMMONIACAL LIQUOR ACTIVATED SLUDGE TREATED WATER 失效
公开(公告)号：JPH06142694A
公开(公告)日：1994-05-24
申请号：JP29533492
申请日：1992-11-04
申请人： NIPPON STEEL CORP
发明人： MIKI OSAMU , FUJII MASAHIRO , KAMORI YASUSHI
IPC分类号： C04B38/00 , B01D24/00 , B01D24/02 , C01B13/10 , C02F1/78 , C02F3/12 , C02F9/00
摘要： PURPOSE:To efficiently and stably eliminate a dirty substance (COD) of ammoniacal liquor activated sludge treated water by allowing ammoniacal liquor generated from a coke oven to be subjected to activated sludge treatment, and also, eliminating suspended matter, and thereafter, executing an ozone treatment, and oxidizing and decomposing each inorganic and organic compound. CONSTITUTION:Ammoniacal liquor 1 generated from a coke oven is supplied, first of all, to an aeration tank 2, and subjected to activated sludge treatment therein. Subsequently, this treated water is supplied to a solid-liquid separator 11 filled with porous ceramics of a saddle type, etc., as a filter material, and suspended matter remaining in the treated water is eliminated. Next, this treated water is supplied to an ozone contact tank 18 and subjected to ozone treatment, and a soluble inorganic compound and organic compound, remaining in the treated water are oxidized and decomposed, respectively. In such a way, a high level treatment of ammoniacal liquor activated sludge treated water is executed. In this regard, by measuring COD and/or oxidation-reduction potential(ORP) of the treated water from which the suspended matter is eliminated by an ORP meter, this treated water can be discharged to a public water area as it is.

6. 发明专利

JPH05285497A 失效
公开(公告)号：JPH05285497A
公开(公告)日：1993-11-02
申请号：JP11317692
申请日：1992-04-07
申请人： NIPPON STEEL CORP
发明人： MIKI OSAMU , FUJII MASAHIRO , KAMORI YASUSHI
IPC分类号： C02F1/52 , C02F1/74 , C02F3/08 , C02F3/10 , C02F9/00
摘要： PURPOSE:To suppress the accumulation of nitrite nitrogen and to efficiently remove org. matter by controlling the amounts of air, oxygen enriched air and oxygen blown into a fluidized bed type reactor using a bacteria immobilized carrier using the redox potential of the reactor and providing a post stage ozone contact tank. CONSTITUTION:A fine powder of shaft furnace water slag is used as a bacteria immobilizing carrier to improve the sedimentation properties of bacteria and the concn. of bacteria is kept high in a fluidized bed type reactor. Further, by setting the redox potential of the fluidized bed type reactor to a certain value range, the oxidative decomposition of BOD and TOC in waste water is promoted and the formation of nitrite nitrogen is suppressed. In such a case that the destruction and fragmenting of activated sludge are generated when a too much amount of air is used corresponding to the kind of the org. matter in a waste fluid or the BOD concn. in the waste fluid and redox potential is not kept, oxygen enriched air and/or oxygen is supplied to perform aeration. An ozone contact bed is arranged to the rear stage of the fluidized bed type reactor to oxidize remaining nitrite nitrogen to nitrate nitrogen.

7. 发明专利

JPH05154491A TREATMENT OF WASTE WATER CONTAINING HIGH-CONCENTRATION NITROGEN 失效
公开(公告)号：JPH05154491A
公开(公告)日：1993-06-22
申请号：JP34770291
申请日：1991-12-04
申请人： NIPPON STEEL CORP
发明人： MIKI OSAMU , FUJII MASAHIRO , KAMORI YASUSHI
IPC分类号： C02F3/06 , C02F3/08 , C02F3/10 , C02F3/12 , C02F9/00
摘要： PURPOSE:To biologically remove water pollutants (BOD) shown as biological oxygen demand, water pollutants (COD) shown as chemical oxygen demand and ammonia compound being reductive nitrogen compound from waste water containing high-concentration nitrogen. CONSTITUTION:Two-stage treatment is performed for waste water containing high-concentration nitrogen by both a fluidized bed type reactor 3 and a fixed bed type reactor 11 in which a microorganism immobilization carrier is used. Thereby organic substance and reductive nitrogen compound contained in waste water are simultaneously removed. Treatment efficiency and nitrogen removal performance are made excellent by the subject method.

8. 发明专利

JPH05146795A BIOLOGICAL TREATMENT OF HYDROGEN SULFIDE-CONTAINING WASTE WATER 失效
公开(公告)号：JPH05146795A
公开(公告)日：1993-06-15
申请号：JP34175791
申请日：1991-12-02
申请人： NIPPON STEEL CORP
发明人： FUJII MASAHIRO , MIKI OSAMU , KAMORI YASUSHI
IPC分类号： C02F3/00 , C02F3/06 , C02F3/10 , C02F3/12 , C02F3/34
摘要： PURPOSE:To culture sulfur-oxidizing bacteria appropriate to treat waste water contg. hydrogen sulfide and to simultaneously, biologically and highly efficiently treat the hydrogen sulfide-contg. waste water and waste gas. CONSTITUTION:The activated sludge for treating sewage and industrial waste water is charged into a bioreactor 13, and the sulfur-oxidizing bacteria capable of oxidizing hydrogen sulfide by the waste water contg. a nonvolatile reducing sulfur compd. are cultured. Waste water contg. hydrogen sulfide is then treated, and the waste gas contg. hydrogen sulfide is simultaneously used to aerate the bioreactor 13 and treated. Consequently, unreacted hydrogen sulfide is not liberated in the culturing stage, and the pollution of water and air by hydrogen sulfide is perfectly prevented.

9. 发明专利

JPH03278895A SIMULTANEOUS REMOVAL OF BOD, NITROGEN COMPOUND AND PHOSPHORUS COMPOUND IN WASTE WATER 失效
公开(公告)号：JPH03278895A
公开(公告)日：1991-12-10
申请号：JP7678090
申请日：1990-03-28
申请人： NIPPON STEEL CORP
发明人： FUJII MASAHIRO , MIKI OSAMU , TAKEZAKI YOSHINORI , KAMORI YASUSHI
IPC分类号： C02F3/30 , C02F3/34
摘要： PURPOSE:To stably remove BOD, a nitrogen compound and a phosphorus compound by dividing a reactor having activated sludge received therein into four anaerobic and aerobic tanks from the waste water inlet part thereof and injecting waste water and return sludge to treat the same under a predetermined condition. CONSTITUTION:An ORP sensor 5 is immersed in the sludge accumulation part 3 of a sludge sedimentation tank 1 to measure the ORP of the sludge accumulation part 3. When ORP is about -150 to -160mV or less, the aeration amount of an aerating blower 7 supplying air to the second aerobic tank 2 is increased by an ORP control apparatus 6 and, when ORP becomes about -150 to -160mV or more, the aeration amount is reduced to hold the ORP of the sludge accumulation part 3 to about -150 to -160mV or more. At this time, the second aerobic tank is always subjected to aeration so that the sedimentation of sludge is not generated even when the ORP of the sludge sedimentation tank 1 becomes about -150 to -160mV or more and aeration amount is reduced.

10. 发明专利

JPH03278894A SIMULTANEOUS REMOVAL OF BOD, NITROGEN COMPOUND AND PHOSPHORUS COMPOUND IN WASTE WATER 失效
公开(公告)号：JPH03278894A
公开(公告)日：1991-12-10
申请号：JP7677990
申请日：1990-03-28
申请人： NIPPON STEEL CORP
发明人： FUJII MASAHIRO , MIKI OSAMU , TAKEZAKI YOSHINORI , KAMORI YASUSHI
IPC分类号： C02F3/30 , C02F3/34
摘要： PURPOSE:To stably remove the BOD and phosphorus compound in waste water by dividing a reactor having activated sludge received therein into four anaerobic and aerobic treatment tanks from the waste water inlet part and injecting waste water and activated sludge to treat the same under a predetermined condition. CONSTITUTION:Reactor is divided into four tanks, that is, the first anaerobic tank, the first aerobic tank, the second anaerobic tank and the second aerobic tank from the inlet part in which sewage flows. Return activated sludge is injected in the first anaerobic tank without controlling ORP and the ORP values of the other tanks are set to about +100mV in the first aerobic tank, to about -150mV in the second anaerobic tank and to about 150mV in the second aerobic tank and aeration is performed in each tank whose ORP becomes lower than the set value from the bottom part thereof and the control of ORP is stopped when ORP is restored to the set value. When the ORP of the sludge accumulation part of a sludge sedimentation tank becomes about -150mv, a sludge withdrawing pump 6 is operated by an ORP control apparatus 5 to draw out sludge.

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