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1. 发明专利

JP2000342928A DEODORIZING APPARATUS AND METHOD 失效
公开(公告)号：JP2000342928A
公开(公告)日：2000-12-12
申请号：JP2000029667
申请日：2000-02-07
申请人： NIPPON KOKAN KK
发明人： MIYAZAWA KUNIO , NAKAHAMA AKIKO , NAGANO HIDEKI , KONDO TAKAAKI
IPC分类号： B01D53/38 , B01D53/34 , B01D53/81
摘要： PROBLEM TO BE SOLVED: To provide a deodorizing apparatus and method not almost discharging ammonia to the outside. SOLUTION: A first deodorizing apparatus includes a malodorous gas introducing port 11, a treated gas discharge port 12, the counterflow packed bed 18a arranged between both ports 11, 12 and packed with a microorganism carrier and permitting malodorous gas and treated water to pass in a counterflow direction, a single flow packed bed 18b provided in a treated water flow down direction with respect to the counterflow packed bed and packed with a microorganism carrier and permitting treated water to pass, a means for supplying treated water to the counterflow packed bed and an excessive treated water discharge means and, in a first deodorizing method, the pH value of the single flow and counterflow packed beds is held to 6.5-8.5. A second deodorizing apparatus includes a means for adding alkali to each of water storage parts and a third deodorizing apparatus includes a first parallel flow packed bed to which alkali is not added and a second similar bed to which alkali is added.

2. 发明专利

JP2000140571A DEODORIZING APPARATUS AND DEDORIZATION 失效
公开(公告)号：JP2000140571A
公开(公告)日：2000-05-23
申请号：JP32048498
申请日：1998-11-11
申请人： NIPPON KOKAN KK
发明人： NAKAHAMA AKIKO , SUZUKI KAZUYOSHI , MIYAZAWA KUNIO , KONDO TAKAAKI
IPC分类号： B01D53/34 , B01D53/38 , B01D53/81
摘要： PROBLEM TO BE SOLVED: To enable the pH of circulating water to be controlled by supplying a raw gas containing a nitogenous odor to a carrier-packed biological deodorizing means containing water circulating in a packed bed packed with a carrier for microorganisms and introducing the raw gas having passed through the packed bed into an adsorptive deodorizing means and/or a chemical deodorizing means. SOLUTION: A malodor gas containing ammonia in a high concentration is introduced from a raw gas supply pipe 2 into a biological deodorizing tower 1. A valve 2a is installed in the raw gas supply pipe 2 and is closed or opened to cotrol the introduction of the malodor gas into the biological deodorizing tower 1. The biological deodorizing tower 1 is equipped with a packed bed 3 packed with a carrier for microorganisms, a circulation line 4, a pump P, and a water storage section 8. The raw gas deodorized by passing through the packed bed 3 is introduced as a treated gas through an exhaust pipe 5 into an activecarbon adsorption tower 6 where to be treated with active carbon. A pH sensor 7 is arranged in the water storage section 3 to measure the pH of circulating water and causes a control unit 9 to output control signals for opening or closing valves 2a, 10a, and 11a.

3. 发明专利

JP2000233114A BIOLOGICAL DEODORIZATION APPARATUS, BIOLOGICAL DEODORIZATION METHOD, AND CULTURE METHOD OF BIOLOGICAL DEODORIZATION APPARATUS 失效
公开(公告)号：JP2000233114A
公开(公告)日：2000-08-29
申请号：JP8704399
申请日：1999-03-29
申请人： NIPPON KOKAN KK
发明人： MIYAZAWA KUNIO , NAKAHAMA AKIKO , SUZUKI KAZUYOSHI , KONDO TAKAAKI
IPC分类号： B01D53/34 , B01D53/30 , B01D53/38 , B01D53/58 , B01D53/81
摘要： PROBLEM TO BE SOLVED: To provide a biological deodorization apparatus, a biological deodorization method capable of carrying out treatment of object substances to be treated in a waste gas at stable treatment efficiency and to provide a method for efficiently cultivating the deodorization apparatus. SOLUTION: A first deodorization apparatus comprises a measurement means 7 capable of measuring concentrations of object substances to be treated in a waste gas and a supply means 8 capable of supplying the object substances in gas-phase to a waste gas. The culture method involves a process of gradually increasing the load of the deodorization apparatus with the object substances. A second deodorization apparatus comprises a measurement means capable of measuring a pH value of treatment water stored in a water storage part 6 and a supply means for supplying ammonia either between a packed-layer 3 and the water storage part 6 or to the water storage part 6.

4. 发明专利

JPH10314663A ANTIBACTERIAL AND ANTIMOLD PRECOATED STEEL SHEET EXCELLENT IN WEATHER RESISTANCE 失效
公开(公告)号：JPH10314663A
公开(公告)日：1998-12-02
申请号：JP12868997
申请日：1997-05-19
申请人： NIPPON KOKAN KK
发明人： KOTANI KEIICHI , YANO HIDEKATSU , KATO HIROYUKI , NAKAHAMA AKIKO
IPC分类号： B05D5/00 , B05D7/14
摘要： PROBLEM TO BE SOLVED: To obtain a precoated steel sheet having excellent antibacterial property, corrosion resistance and weather resistance for a long time by forming a chemically treated film on the surface of a steel sheet, then forming a lower coating film and an upper coating film thereon, and incorporating a specified amt. of an inorg. antibacterial agent and an additive to improve weather resistance into the upper coating film. SOLUTION: Upper and lower coating resin layers are formed on a steel sheet. For the upper coating film, 0.3 to 7 pts.wt. of an inorg. antibacterial agent is compounded to 100 pts.wt. of the resin solid content. By controlling the compounding ratio to the above range, an enough effect to prevent mold is obtd. as well as the aggregating power of the resin is maintained. Further, an additive to suppress changes in colors by light is added by 0.1 to 3 pts.wt. to 100 pts.wt. of the resin solid content. As for the resin for the upper coating layer, a polyester resin or an acryl resin generally used for building materials is used. The inorg. antibacterial agent is added by fast stirring method. The upper coating film is formed to 8 to 33 μm thickness, considering the workability of coating and the appearance.

5. 发明专利

JP2000176239A BIOLOGICALLY DEODORIZING DEVICE FOR AMMONIA 失效
公开(公告)号：JP2000176239A
公开(公告)日：2000-06-27
申请号：JP36142198
申请日：1998-12-18
申请人： NIPPON KOKAN KK
发明人： NAKAHAMA AKIKO , SUZUKI KAZUYOSHI
IPC分类号： C12M1/00 , B01D53/34 , B01D53/38 , B01D53/75 , C12N11/08 , C12N11/14 , C12S99/00 , C12S13/00
摘要： PROBLEM TO BE SOLVED: To efficiently cause a nitrification reaction even at a water storage part of circulating water and to efficiently deodorize biologically the waste gas containing a high concn. gaseous ammonia by providing the carrier for carrying an ammonia decomposable microorganism in the water storage part for recovered water passed through the packed layer in a packed column. SOLUTION: The waste gas sent from a waste gas supply pipe 2 to a biologically deodorizing column 1 is deodorized by transferring the ammonia to treating water, according to circumstances, by subjecting other nasty smelling material to decomposition treatment while passing through a packed layer 3 and discharged from a discharge pipe 10. On the other hand, the treating water sprinkled to the packed layer 3 from a sprinkling line 11 and a sprinkling pump 12, etc., is recovered to a water storage tank 4 and stored after passing through the packed layer 3. Here, the carrier for carrying the ammonia decomposable microorganism, for example a fluid carrier 81, is added in the recovered water in the water storage tank 4. The dissolved ammonia in the recovered water is decomposed or converted to other material by the ammonia decomposable microorganism to prevent from being vaporized again in a form of ammonia.

6. 发明专利

JP2000288333A BIOLOGICAL DEODORIZATION APPARATUS AND BIOLOGICAL DEODORIZATION METHOD 失效
公开(公告)号：JP2000288333A
公开(公告)日：2000-10-17
申请号：JP9512399
申请日：1999-04-01
申请人： NIPPON KOKAN KK
发明人： MIYAZAWA KUNIO , NAKAHAMA AKIKO , SUZUKI KAZUYOSHI , KONDO TAKAAKI
IPC分类号： B01D53/34 , B01D53/38 , B01D53/81
摘要： PROBLEM TO BE SOLVED: To deal with the alteration of malodor concentration with a compact and simple constitution by installing a packed layer filled with a carrier bearing microorganism, a circulation means for sprinkling treatment water to the packed layer, a means for adding make-up water to the treatment water, and a discharge means for discharging the treatment water from a water storage part. SOLUTION: A malodorous gas is introduced into a packed layer 2 from a gas introducing inlet 51 and decomposed by microorganism carried on a carrier in the packed layer 2 and then, as a treated gas, discharged out of a treated gas discharge port 52. A circulation line 9 for sprinkling circulation water is connected to the packed layer 2 and a water storage part 3 for storing circulation water (sprinkled water) is formed in the bottom part of a deodorization tower 1. Water in the water storage part 3 is introduced into the circulation line 9 by a water sprinkling pup 5 and sprayed on the uppermost part of the packed layer 2 from a water spraying nozzle 6. Further, a line 11 to introduce make-up water from a make-up water introducing inlet 55 is connected to the circulation line 9 for sprinkling water and at the same time a valve 10 is opened or closed corresponding to the pH of the upper part of the packed layer 2 to supply make-up water is to the line 11.

7. 发明专利

JP2000176238A ACCLIMATIZING METHOD OF BIOLOGICALLY DEODORIZING DEVICE 失效
公开(公告)号：JP2000176238A
公开(公告)日：2000-06-27
申请号：JP36141998
申请日：1998-12-18
申请人： NIPPON KOKAN KK
发明人： NAKAHAMA AKIKO , SUZUKI KAZUYOSHI
IPC分类号： C12M1/00 , B01D53/38 , B01D53/77 , C12N11/02 , C12N11/14 , C12S99/00 , C12S13/00
摘要： PROBLEM TO BE SOLVED: To raise the ammonia load syncronizingly with an acclimatizing stage and to smoothly advance the proliferation of nitrifying bacterium by introducing gaseous ammonia in a suitable amount in accordance with the acclimatizing stage during the acclimatizing term of a carrier packed biologically deodorizing device for deodorizing ammonia. SOLUTION: The waste gas sent from a waste gas supply pipe 2 to a biologically deodorizing column 1 is discharged from a discharge pipe 6 while passing through a packed layer 3 and while transferring the ammonia to treating water to decompose. In such a case, in the case where the acclimatization in which the amount of the nitrifying bacterium is gradually increased just after depositing sewage sludge, etc., on the packed layer 3 is executed, the raw gas for acclimatization regulated to a prescribed concn. by diluting the waste gas or commercially available gaseous ammonia with the air is introduced. Then the treating water 41 is sprinkled to the packed layer 3 from a sprinkling line 4 to dissolve the ammonia in the treating water 41. Thereafter, the ammonia concn. in the raw gas for the acclimatization is regulated to maintain the amount of the nitrifying bacterium in constant while measuring the pH value of the drain stored in a water storage tank 5 with a pH meter.

8. 发明专利

JP2000140572A CARRIER-PACKED BIOLOGICAL DEODORIZATION APPARATUS AND DEODORIZATION USING THE SAME 失效
公开(公告)号：JP2000140572A
公开(公告)日：2000-05-23
申请号：JP32048598
申请日：1998-11-11
申请人： NIPPON KOKAN KK
发明人： NAKAHAMA AKIKO , SUZUKI KAZUYOSHI , MIYAZAWA KUNIO , KONDO TAKAAKI
IPC分类号： C12N11/00 , B01D53/34 , B01D53/38 , B01D53/81 , C12N1/00 , C12R1/01
摘要： PROBLEM TO BE SOLVED: To provide a deodorization method capable of efficiently removing malodor including ammonia even in the case the concentration of ammonia nitrogen in circulated water exceeds 1000 mg-N/liter. SOLUTION: This deodorization method is carried out by introducing a nitrogen compound type malodorous gas into a carrier-packed type biological deodorization apparatus comprising a packed layer filled with a carrier for carrying microorganism and circulated water circulated in the packed layer. The ratio (the concentration of NO3-N and NO2-N/the concentration of NH3-N) of the concentration of nitrate- and nitrite-nitrogen to the concentration of ammonia nitrogen in the circulated water is maintained to be 1 or higher.

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