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1. 发明专利

JPH08164399A TREATMENT OF DIVALENT IRON-CONTAINING WASTE WATER 失效
公开(公告)号：JPH08164399A
公开(公告)日：1996-06-25
申请号：JP33240394
申请日：1994-12-14
申请人： NIPPON STEEL CORP
发明人： MIKI OSAMU , KAMORI YASUSHI , YABE HIDEAKI
IPC分类号： C02F3/12 , C02F3/34
摘要： PURPOSE: To efficiently and stably treat divalent iron-contg. waste water by using iron oxide bacteria. CONSTITUTION: The divalent iron in the divalent iron-contg. waste water is oxidized to tervalent iron by the iron oxide bacterial in an aeration tank 3. The treated water oxidized to the tervalent iron is passed through a membrane separator 4 installed in the aeration tank 3, by which the treated water is separated to the treated water and the iron oxide bacteria. The iron-component is recovered by neutralizing the treated water. A ceramic membrane provided with many pores of a diameter of 1 to 20μm is used for the membrane separator 4. The air is continuously supplied from a waste water passing side to the membrane of the membrane separator 4 and the air and/or sulfuric acid is intermittently supplied from the drain water discharge side thereto to wash the membrane and to recover the iron oxide bacteria sticking to the membrane. Then, the iron oxide bacteria are maintained at a high density in the aeration tank and the divalent iron-contg. waste water is efficiently and stably treated. The compact formation of equipment is possible as well.

2. 发明专利

JPH07116681A SIMULTANEOUS TREATMENT METHOD FOR WATER DISCHARGE AND DEODORIZATION 失效
公开(公告)号：JPH07116681A
公开(公告)日：1995-05-09
申请号：JP28730993
申请日：1993-10-25
申请人： NIPPON STEEL CORP
发明人： MIKI OSAMU , KAMORI YASUSHI , YABE HIDEAKI
IPC分类号： B01D53/38 , B01D53/81 , C02F3/06 , C02F3/10
摘要： PURPOSE:To remove polluting substances (COD) efficiently and stably without producing malodor wherein the polluting substances are expressed as chemical oxygen demand which comes from a slight amount of volatile organic compounds remaining in waste water drained off at a chemical plant. CONSTITUTION:Waste water drained off at a chemical plant, etc., is biologically treated by fixed bed-type bioreactors 3 which are saddle-type and/or ring-type porous ceramics filled with bacteria to remove volatile organic compounds in the waste water in a slight amount. The malodor occurred by the fixed bed-type bioreactors 3 is removed by leading the malodor gas to a deodorization tower 13 filled with the saddle-type and/or ring-type porous ceramics.

3. 发明专利

JPH06106189A DOMESTICATION AND MULTIPLICATION OF SULFUR OXIDIZING BACTERIA BY ADDITION OF CARBONATE AND BIOLOGICAL TREATMENT OF WASTE WATER CONTAINING REDUCING SULFUR COMPOUND 失效
公开(公告)号：JPH06106189A
公开(公告)日：1994-04-19
申请号：JP27914492
申请日：1992-09-25
申请人： NIPPON STEEL CORP
发明人： FUJII MASAHIRO , MIKI OSAMU , KAMORI YASUSHI , FUKUNAGA KAZUHISA
IPC分类号： C02F3/00 , C02F3/34 , C04B41/50 , C12N1/20 , C12R1/01
摘要： PURPOSE:To biologically treat waste water with a high degree of efficiency and the reduction of the treating costs by a method wherein the waste water contg. a reducing sulfur compound and a carbonate are supplied into an aeration tank contg. an active sludge mixture such as sewage and industrial waste water and the aerating action and pH of the aeration tank are controlled. CONSTITUTION:An active sludge for treating sewage and industrial waste water is introduced into an aeration tank. The domestication and multiplication of sulfur oxidizing bacteria is accelerated by supplying the waste water contg. a reducing sulfur compound and a carbonate into the aeration tank, with the aeration tank kept in the pH range of 4.0-7.5 and while adjusting ORP to the value obtained by calculation from the free energy variation DELTAG0 taking place when the reductive sulfur compound is chemically oxidized into a sulfuric acid compound. The waste water contg. the reducing sulfur compound is thereafter treated with the sulfur oxidizing bacteria. The aforesaid methods effect the domestication and multiplication of the sulfur oxidizing bacteria in a short period of time and obviate the need for a complicated treatment such as pH adjustment of the waste water and for the provisions of acid resistance to the waste water treating equipment.

4. 发明专利

JPH06496A ADVANCED TREATMENT OF SEWAGE 失效
公开(公告)号：JPH06496A
公开(公告)日：1994-01-11
申请号：JP18733592
申请日：1992-06-23
申请人： NIPPON STEEL CORP
发明人： KAMORI YASUSHI , FUJII MASAHIRO , MIKI OSAMU
IPC分类号： C02F3/10 , C02F3/34
摘要： PURPOSE:To treat nitrogen and phosphorus contained in sewage to be treated biologically and highly efficiently. CONSTITUTION:Nitrifiers are immobilized to a saddle type ceramic carrier for immobilizing miroorganisms. The aeration rate in a reactor 1 so controlled that the oxidation reduction potential of the water to be treated in the reactor 1 packed with the immobilization carrier is regulated to >=+100mV (Ag/AgCl electrode standard). A ferric chloride aqueous solution is added to the sewage and an insoluble phosphoric acid compound is deposited and filtered by the filter 2 of the succeeding stage wherein saddle type ceramic, sand or anthracite is packed therein. Thereby ammoniac nitrogen contained in sewage is nearly completely removed and the whole phosphorus can be treated to

5. 发明专利

JPH04310296A ACCLIMATION AND PROPAGATION OF BACTERIA OXIDIZING AND DECOMPOSING REDUCIBLE SULFUR COMPOUND, AND BIOLOGICAL TREATMENT OF WASTE WATER CONTAINING THE SAME COMPOUND 失效
公开(公告)号：JPH04310296A
公开(公告)日：1992-11-02
申请号：JP10393691
申请日：1991-04-09
申请人： NIPPON STEEL CORP
发明人： FUJII MASAHIRO , MIKI OSAMU , KAMORI YASUSHI
IPC分类号： C02F3/12 , C02F3/34 , C12N1/20
摘要： PURPOSE:To biologically treat waste water containing a reducible sulfur compound with high efficiency by acclimating and propagating bacteria suitable for the treatment of the waste water. CONSTITUTION:Activated sludge for treating sewage or industrial waste water is introduced into an aeration tank to be subjected to aeration. A soluble calcium salt is added to waste water containing a reducible sulfur compound before introducing the waste water into the aeration tank.

6. 发明专利

JPH03296498A SIMULTANEOUS REMOVAL OF BOD, NITROGEN COMPOUND AND PHOSPHORUS COMPOUND FROM WASTE WATER 失效
公开(公告)号：JPH03296498A
公开(公告)日：1991-12-27
申请号：JP9920690
申请日：1990-04-17
申请人： NIPPON STEEL CORP
发明人： FUJII MASAHIRO , MIKI OSAMU , TAKEZAKI YOSHINORI , KAMORI YASUSHI
IPC分类号： C02F3/12 , C02F1/58 , C02F3/30 , C02F3/34 , C02F9/00
摘要： PURPOSE:To simultaneously remove a phosphorus compound, BOD or the like by biologically treating waste water in a reactor having activated sludge present therein and divided into a plurality of sections and treating the phosphorus compound and insoluble compound of the waste water with a chemical agent. CONSTITUTION:Waste water to be treated and the return sludge from a sludge sedimentation tank are continuously injected in the first anaerobic tank under mechanical stirring and ORP is controlled within a range generating the discharge of phosphorus from activated sludge and exerting no adverse effect on the control of the ORP of the next first aerobic tank. Next, the activated sludge mixed solution of the anaerobic tank is continuously injected in the first aerobic tank and the ORP of the aerobic tank is controlled within a range sufficiently generating the oxidative decomposition of the BOD in waste water, nitration reaction and the excessive intake of phosphorus due to activated sludge and exerting no adverse effect on the control of the ORP of the next second anaerobic tank. Subsequently, the activated sludge mixed solution of the first aerobic tank is continuously supplied to the second aerobic tank.

7. 发明专利

JPH09253687A ANAEROBIC AND AEROBIC TREATMENT APPARATUS FOR WASTE WATER 失效
公开(公告)号：JPH09253687A
公开(公告)日：1997-09-30
申请号：JP9472596
申请日：1996-03-26
申请人： NIPPON STEEL CORP
发明人： KAMORI YASUSHI
IPC分类号： C02F3/06 , C02F3/30
摘要： PROBLEM TO BE SOLVED: To eliminate or simplify a post treatment process in an anaerobic and aerobic treatment apparatus by which organic matters and nitrogen components contained in waste water are simultaneously treated. SOLUTION: In this anaerobic and aerobic treatment apparatus which simultaneously removes organic matters and nitrogen components contained in waste water, microbe-bearing carriers are packed dividedly in an upper-stage packed part 2 and a lower-stage packed part 3 in the inside of a fixed bed type reactor 1. An aeration pipe 4 to blow air is installed between the upper-stage packed part 2 and the lower-stage packed part 3 and an underwater stirring aeration apparatus 9 is installed under the lower-stage packed part 3. The upper-stage packed part 2 is made to be aerobic and the lower-stage packed part 3 is made to be anaerobic and waste water is supplied from the lower part of the lower- stage packed part 3 to be treated.

8. 发明专利

JPH08197078A BIOLOGICAL SEWAGE TREATING DEVICE 失效
公开(公告)号：JPH08197078A
公开(公告)日：1996-08-06
申请号：JP796795
申请日：1995-01-23
申请人： NIPPON STEEL CORP
发明人： ONO NOBUYUKI , NOMURA YUKIHIRO , MUTO HIROSHI , KAMORI YASUSHI
IPC分类号： C02F3/06 , C02F3/08 , C02F3/10 , C02F3/12 , C02F3/30
摘要： PURPOSE: To make a settling tank of a biological sewage treating device compact by setting an organism immobilizing carrier in, an aeration tank or in an anaerobic tank and throwing in a granular solid material having a specified grain diameter. CONSTITUTION: A granular solid material 4 is thrown in an aeration part 1, an immobilized organism immobilizing carrier 3 is set at an intermediate height of the aeration part 1. Raw water 5 is introduced from the lower part of the aeration part 1, and air 8 is blown in from the lower part of the aeration part 1. Consequently, the org. component in the raw water is brought into contact with activated sludge, and the org. matter is decomposed and removed. The activated sludge is deposited on the carrier 3, and the amt. of immobilized activated sludge is increased. Accordingly, even if the concn. of activated sludge is lowered in a fluidized region, the concn. of the activated sludge effective in the entire treatment of the aeration part 1 is maintained at the same concn. as before. Further, the settling velocity of activated sludge is increased and the water surface area of a settling part 2 is decreased by throwing in the granular solid material 4 having

9. 发明专利

JPH07251194A TREATMENT OF WASTE WATER CONTAINING REDUCTIVE SULFUR COMPOUND 失效
公开(公告)号：JPH07251194A
公开(公告)日：1995-10-03
申请号：JP6898294
申请日：1994-03-15
申请人： NIPPON STEEL CORP
发明人： MIKI OSAMU , OSADA TAKENORI , KAMORI YASUSHI
IPC分类号： C02F3/12 , C02F3/34
摘要： PURPOSE:To biologically, highly efficiently and stably treat a waste water contg. reductive sulfur compds. with sulfur-oxidizing bacteria. CONSTITUTION:A waste water contg. reductive sulfur compds. is biologically treated with sulfur-oxidizing bacteria. In this case, the inside of a water-added diffuser pipe 4 set at the lower part of an aeration tank 3 is cleaned with treated water and/or city water. The aeration rate to the tank 3 is controlled with the oxidoreduction potential (ORP) and/or dissolved oxygen (DO) of the tank 3 as the index. Consequently, the diffuser pipe is not clogged, the maintenance and control of the equipment are facilitated, and the quality of treated water is improved and stabilized.

10. 发明专利

JPH0731996A WASTE WATER TREATING METHOD 失效
公开(公告)号：JPH0731996A
公开(公告)日：1995-02-03
申请号：JP20014893
申请日：1993-07-21
申请人： NIPPON STEEL CORP
发明人： MIKI OSAMU , ARITOME KIYOSHI , KAMORI YASUSHI
IPC分类号： C02F1/78 , C02F3/02 , C02F3/10 , C02F3/30 , C02F9/00
摘要： PURPOSE:To stably and efficiently remove an org. matter and a nitrogen compd. by disposing an aerobic and an anaerobic fixed bed type reactor at the post stage of a fluidized bed type reactor, treating a waste water, then bringing the waste water into contact with ozone to remove simultaneously remaining org. matter and nitrogen compd. CONSTITUTION:In the waste water treating method of the org. industrial waste water, a sludge treated water and the city sewerage in which large bulk of the org. industrial waste water inflows, the aerobic fixed bed type reactor 11 and the anaerobic fixed bed type reactor 13 are disposed at the post state of the fluidized bed type reactor 3 using a microorganisms-immobilized carrier. Then, after executing the treatment at both the reactors 11 and 13, moreover, an ozone-contacting tank 24 is being disposed, and the ozone from an ozone- generating device 25 is brought into contact with a biologically treated water to remove simultaneously the org. matter and the nitrogen compd. remaining in the biologically treated water. In this way, the org. matter difficult to be decomposed, which can not be removed by the biological treatment, are removed thoroughly together with the NO2-N remaining slightly, and the COD of the treated water is improved and the treatment is stabilized.

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