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1. 发明专利

JP2004051395A Process for operating rotary stirrer in compost fermentation equipment 审中-公开
公开(公告)号：JP2004051395A
公开(公告)日：2004-02-19
申请号：JP2002208510
申请日：2002-07-17
申请人： Hitachi Plant Eng & Constr Co Ltd , 日立プラント建設株式会社
发明人： SHIDA KATSUMI , IWASAKI ISATO , KOJIMA MASAYUKI
IPC分类号： B09B3/00 , C05F17/00
CPC分类号： Y02W30/43
摘要： PROBLEM TO BE SOLVED: To provide a process for operating a rotary stirrer in compost fermentation equipment wherein the compost is prevented from being splashed out of a fermentation tank when a stirring rotor begins stirring, by decreasing area required for discharging the compost. SOLUTION: A prime mover 25 equipped with an inverter controller, which controls the rotating speed of the stirring rotor 24, is mounted on the rotary stirrer 12. By rotating the stirring rotor 24, organic matters 5 stacked in the fermentation tank 14 are stirred with agitating blades 22. The rotating speed of the stirring rotor 24 is controlled by the inverter controller so that it starts rotating at a low speed and gradually accelerates. This prevents the organic matters 5 from being scattered around the compost-discharging area at the beginning of stirring. COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2003300087A Circular flow aerator 有权
标题翻译：圆形流量计
公开(公告)号：JP2003300087A
公开(公告)日：2003-10-21
申请号：JP2002105926
申请日：2002-04-09
申请人： Hitachi Plant Eng & Constr Co Ltd , 日立プラント建設株式会社
发明人： KITAZAWA TERUHIRO , KOJIMA MASAYUKI
IPC分类号： C02F3/08 , B01F3/12 , B01F13/02 , B01F15/00 , C02F3/20
CPC分类号： Y02W10/15
摘要： PROBLEM TO BE SOLVED: To reduce an amount of holdback carriers of microorganisms to be periodically replenished by reducing the wear of the holdback carriers. SOLUTION: The circular flow aerator includes: an aeration tank 2 to store water to be treated to which the carriers holding microorganisms are added; diffuser pipes 3 which are arranged in the aeration tank 2, blow off fine air bubbles and produce the circulating flow of the water to be treated in the aeration tank 2 by an airlift effect caused by the fine air bubbles; and guide plates 10 which are provided below the diffuser pipes 3 and prevents the collision of the upward flow of the water to be treated to the diffuser pipes 3. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：通过减少保持载体的磨损来减少要定期补充的微生物的保持载体的量。环流式曝气器包括：曝气池2，用于储存添加有微生物载体的待处理水; 布置在曝气池2中的扩散管3吹出细小气泡，并通过由气泡引起的空气提升效应产生曝气池2中被处理水的循环流; 和引导板10，其设置在扩散管3的下方，并防止被处理水向上流动与扩散管3的碰撞。版权所有（C）2004，JPO

3. 发明专利

JPH10165975A WASTE WATER TREATMENT APPARATUS WITH CARRIER EXPANSION PHASE 失效
公开(公告)号：JPH10165975A
公开(公告)日：1998-06-23
申请号：JP32877596
申请日：1996-12-09
申请人： HITACHI PLANT ENG & CONSTR CO
发明人： KOJIMA MASAYUKI , IGARASHI TAMIO , MORI NAOMICHI , NAKAMURA HIRONORI , KASAI MASATAKA
IPC分类号： C02F3/08 , C02F3/30 , C02F3/34
摘要： PROBLEM TO BE SOLVED: To improve water quality of treated water by an apparatus wherein an aeration means for forming an aeration phase on the upper part of a deep tank type bioreactor and a circulation means for forming a static water phase between a carrier expansion phase formed in the lower part of the bioreactor and wherein a carrier carrying microorganism floats up slightly and an aeration phase are installed. SOLUTION: After waste water flowing into a bioreactor 16 is sufficiently aerated in an aeration phase 42 by means of an aeration device 18, it is lowered as a downward stream in a communication pipe 26 and is delivered to the bottom part of the bioreactor 16. The waste water delivered to the bottom part of this bioreactor 16 is elevated as a up-blow in the bioreactor 16 and by keeping linear velocity when it passes through a carrier expansion phase 46 formed on the lower part of the bioreactor 16 at 0.5-7cm/sec, a static water phase 48 with a flow velocity at which the carrier 14 can enough naturally settle is formed in the water region on the top side of the carrier expansion phase 46. In addition, aerobic atmospheres are formed in the upper part and the lower part of the bioreactor 16 and BOD ingredient and ammoniacal nitrogen are mainly nitrification-treated respectively in the aeration phase 42 and the carrier expansion phase 46.

4. 发明专利

JPH09275981A INCLUDED IMMOBILIZED CARRIER AND ITS FORMATION 失效
公开(公告)号：JPH09275981A
公开(公告)日：1997-10-28
申请号：JP9438996
申请日：1996-04-16
申请人： HITACHI PLANT ENG & CONSTR CO
发明人： SUMINO TATSUO , KOJIMA MASAYUKI , KASAI MASATAKA
IPC分类号： C12N11/08 , C02F3/10
摘要： PROBLEM TO BE SOLVED: To obtain the subject carrier high in nitrogen removal and wear resistance, by mixing activated sludge with fine powder of a metal oxide, allowing the mixture to stand for a fixed time to give a mixed solution, suspending the solution in a gel raw material solution and gelatinizing the suspension to include a microorganism in a hydrous gel of a polymer. SOLUTION: Concentrated activated sludge is mixed with fine powder of a metal oxide (e.g. fly ash) comprising iron oxide or silicon oxide having 5-40μm average particle diameter to prepare a mixed solution. The mixed solution is allowed to stand for 1-2 hours, is added to a raw material solution of gel comprising a polyethylene glycol prepolymer and N,N,N',N'- tetramethylethylenediamine as a polymerizing agent and suspended to give a suspension. Then the suspension is mixed with a potassium persulfate as a polymerization initiator, immediately cast into a vinyl chloride tube having 3mm inner diameter, allowed to stand for 10 minutes at 20 deg.C and gelatinized. The prepared rodlike cylindrical material is cut in 3mm length into a pellet state to give the objective included immobilized carrier in which a microorganism is included and immobilized to a hydrous gel of a polymer.

5. 发明专利

JPH09196559A DRYER 失效
公开(公告)号：JPH09196559A
公开(公告)日：1997-07-31
申请号：JP922296
申请日：1996-01-23
申请人： HITACHI PLANT ENG & CONSTR CO , NIPPON SHARYO SEIZO KK , NIPPON REFINE KK
发明人： KOJIMA MASAYUKI , HARADA TETSUO , INUZUKA MASANORI , KAWASE YASUHITO
IPC分类号： F26B11/16
摘要： PROBLEM TO BE SOLVED: To provide a dryer which can be operated with a small equipment power, whose drying efficiency is good and whose small size can be realized. SOLUTION: A shell 12 and a bottom plate 14 are covered with a jacket 20 to form a steam chamber 22. An axial steam chamber 52 is provided in a rotating shaft 46. A fixed vane 94 having a comb teeth member 100 is fixed to the shell 12. A shearing rotary vane 70 having a comb teeth member 88 is attached to the rotating shaft 46. Sludge as a material to be dried is supplied from a supply nozzle 40 and the rotating shaft 46 is rotated while steam is supplied to the steam chamber 22 and the axial steam chamber 52. The shearing rotary vane 70 shears the sludge whose viscosity is increased, go that a surface area is increased and a drying efficiency is improved. Since the shearing rotary vane 70 also serves as an agitating vane. the sludge can be entirely uniformly dried. Since the shearing rotary vane 70 does not need to be rotated at high speed, an equipment power may be decreased. As a result, the dryer can be made compact.

6. 发明专利

JPH09192416A LIQUID DISTRIBUTOR AND SOLID-LIQUID SEPARATOR PROVIDED WITH THE SAME 失效
公开(公告)号：JPH09192416A
公开(公告)日：1997-07-29
申请号：JP909196
申请日：1996-01-23
申请人： HITACHI PLANT ENG & CONSTR CO , FUNAKOSHI TAIJI
发明人： KAWAJIRI HITOSHI , KOJIMA MASAYUKI , YAMAMOTO HIROBUMI
IPC分类号： B01D24/00 , B01D29/90 , B01D36/00 , B04C3/04
摘要： PROBLEM TO BE SOLVED: To equalize filtration velocity of a solid-liquid separator as much as possible over the whole filter medium bed area. SOLUTION: Feed water to be treated is caused to flow into a cylindrical vessel 40 from an inflow pipe 42 arranged in the tangential direction thereof near the lower end thereof to generate a turning flow in the cylindrical vessel 40, and the turning flow is caused to flow out from plural discharge pipes 44 installed in the tangential direction of the peripheral surface of the cylindrical vessel 40 at the same height position thereof to constitute a distributor 3. Therefore, liquid flowing into the cylindrical vessel 40 is equally distributed and caused to flow out. The distributors 32 are applied to a solid-liquid separator, allowing the flow velocity distribution of feed water to be treated in the whole floating filter medium bed area to be equalized compared to the conventional distributors.

7. 发明专利

JPH0975994A BIOLOGICAL WASTE WATER TREATING DEVICE 失效
公开(公告)号：JPH0975994A
公开(公告)日：1997-03-25
申请号：JP23978195
申请日：1995-09-19
申请人： HITACHI PLANT ENG & CONSTR CO
发明人： KOJIMA MASAYUKI
IPC分类号： C02F3/08 , C02F3/12 , C02F3/34 , C02F9/00
摘要： PROBLEM TO BE SOLVED: To provide a biological waste water treating device which is equipped with a carrier outflow preventive device for separating carriers without using a screen and is capable of drastically lessening maintenance and inspection and improving treatment efficiency. SOLUTION: The suspending activated sludge and carriers 24 which are entrained in a nitrifying liquid and flowing out into an accepting vessel 48 from a nitrifying vessel 26 are lowered by a descending flow passage 54 and is admitted into a separating chamber 56. The carriers 24 are settled and separated from the suspending activated sludge by utilizing the difference in the sp. gr. between the suspending activated sludge and the carriers 24 in the separating chamber 24. The carriers 24 settling on the bottom of the separating chamber 56 returns to the nitrifying vessel 26 by riding the flow of a water feed pipe 58 which takes-in the lower liquid in the separating chamber 56 and feeding the water to the nitrifying vessel 26. At this time, the flow of the water feed pipe 58 is formed by an air lift and, therefore, the destruction of the carriers 24 does not arise. Besides, the suspending activated sludge is returned to a denitrifying vessel by a nitrifying liquid circulating path 16 for circulating the upper layer liquid of the separating chamber 56 to the denitrifying vessel and is sent to a sludge settling vessel via a trough 70 for allowing the overflow of the treated water.

8. 发明专利

JPH0919606A CONTROLLING METHOD OF INJECTING CHAMICAL OF SEWAGE TREATING FACILITY 失效
公开(公告)号：JPH0919606A
公开(公告)日：1997-01-21
申请号：JP16858495
申请日：1995-07-04
申请人： TOMIZAWA CHISATO , HITACHI PLANT ENG & CONSTR CO
发明人： TOMIZAWA CHISATO , YAMAMOTO HIROBUMI , KOJIMA MASAYUKI , KAWAJIRI HITOSHI
IPC分类号： B01D21/30 , B03C1/00 , B03C1/06 , C02F1/52
摘要： PROBLEM TO BE SOLVED: To provide a controlling method of injecting chemical of a sewage treating facility by which the added quantity of a coagulant is properly controlled and also the waste of the coagulant due to excessive addition is eliminated. SOLUTION: The turbidity of the treated water from which magnetic flocs formed by adding a coagulant to sewage have been adsorbed and removed by a magnetic disc 24 and the turbidity of water in which the magnetic flocs are entrained are both detected, and based on the turbidity of the two, the added quantity of a coagulant added from a coagulant adding device 12 is controlled by a controller 18. That is, from the deterioration of the turbidity of the treated water, the shortage of the added quantity of the coagulant is determined, and from the deterioration of the turbidity of the flocs-entrained water, the excess of the added quantity of the coagulant is determined, allowing the added quantity of the coagulant to approach an optimum one.

9. 发明专利

JPH07185269A FLAT MEMBRANE FILTER APPARATUS 失效
公开(公告)号：JPH07185269A
公开(公告)日：1995-07-25
申请号：JP35150093
申请日：1993-12-28
申请人： HITACHI PLANT ENG & CONSTR CO
发明人： KOYAKATA TOSHIO , OKUNO YUTAKA , KOJIMA MASAYUKI , OKUMA NAOKI , KASAI MASATAKA
IPC分类号： B01D63/08 , B01D63/16 , B01D65/00 , B01D65/08
摘要： PURPOSE:To provide a flat membrane filter apparatus having a simple structure, enhanced in volume efficiency and capable of scaling up the area of a filter membrane. CONSTITUTION:A pair of plate-shaped filter elements 4 having filter membranes 6 formed on the surfaces thereof are arranged in the liquid stored in a tank 2 and the filtrate obtained through the filter elements 4 is discharged to the outside. A drive mechanism subjecting at least a pair of the plate-shaped filter elements 4 to reciprocal motion or revolving motion in mutually opposed directions is installed. One filter element 4 is moved along a locus of a-a' by an eccentric cam drive device 12a and the adjacent filter element 4 is moved along a locus of b-b' by an eccentric cam drive device 12b and both filter elements are reciprocally moved in mutually opposed directions.

10. 发明专利

JPH05111645A MAGNETIC SEPARATOR 失效
公开(公告)号：JPH05111645A
公开(公告)日：1993-05-07
申请号：JP27551291
申请日：1991-10-23
申请人： HITACHI PLANT ENG & CONSTR CO
发明人： YAMAURA TAKESHI , FUNAKOSHI TAIJI , OGATA KOJI , KOJIMA MASAYUKI , KAWAJIRI HITOSHI , YAMAMOTO HIROBUMI
IPC分类号： B03C1/06
摘要： PURPOSE:To provide a magnetic separator where magnetic particles adsorbed by a magnetic disk are efficiently conveyed and simultaneously capacity for magnetic particles contained in wastewater is improved. CONSTITUTION:A toothed belt 54 is made a scraper belt for scraping magnetic particles 58 stuck on the surface of a magnetic disk 24 and also is equipped with scraper blades 55, 55 on the surface. Thus the belt 54 is prevented from running idle. The magnetic particles 58 scraped by the toothed belt 54 fall between the scraper blades 55, 55 of the toothed belt 54 and are conveyed. And since the toothed belt 54 equipped with the scraper blade 55 is used, permanent magnet fragments can be fitted the whole region of the magnetic disk 24, and the throughput for magnetic particles 58 contained in wastewater is improved.

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