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1. 发明专利

JPH1119671A FILTERING METHOD FOR ACTIVATED SLUDGE 失效
公开(公告)号：JPH1119671A
公开(公告)日：1999-01-26
申请号：JP17720097
申请日：1997-07-02
申请人： DAIDOU HITOSHI , KURITA WATER IND LTD , NIPPON STEEL CORP , HITACHI METALS LTD
发明人： DAIDOU HITOSHI , SAWADA SHIGEKI , SUZUKI KAZUO , SAKATA MORIO , FUKUNAGA KAZUHISA , OCHIAI KAZUNARI , NAGAI MUTSURO
IPC分类号： C02F3/06 , C02F3/10
摘要： PROBLEM TO BE SOLVED: To stably obtain high quality treated water by forming the good adhered matter layer of activated sludge on a filter body immersed and arranged in a biological reactor and efficiently separating the activated sludge. SOLUTION: An activated sludge soln. in a biological reactor 11 is circulated along the surface of a filter body 10 in an average flow rate of 0.05-0.4 m/sec. When the average flow rate of the activated sludge soln. circulating on the surface of the filter body is 0.05-0.4 m/sec, a fluidized dynamic filter layer approximate to a sludge boundary layer called as a sludge blanket among boundary layers between a sludge layer and a clean layer as if being generated in a settling tank is formed on the surface of the filter body in accompany with the progress of the filtration. In this way, the particles of the activated sludge can be efficiently filtered by the filtering capacity of the fluidized dynamic filter layer without increasing filtering resistance.

2. 发明专利

JP2000342942A DYNAMIC FILTER APPARATUS 失效
公开(公告)号：JP2000342942A
公开(公告)日：2000-12-12
申请号：JP16123699
申请日：1999-06-08
申请人： DAIDO HITOSHI , ASO EIJI , KURITA WATER IND LTD , NIPPON STEEL CORP , HITACHI METALS LTD
发明人： DAIDO HITOSHI , ASO EIJI , SUZUKI KAZUO , KISHINE YOSHINAO , SAKATA MORIO , FUKUNAGA KAZUHISA , OCHIAI KAZUNARI , NAGAI MUTSURO
IPC分类号： B01D69/14 , C02F3/12
摘要： PROBLEM TO BE SOLVED: To provide a dynamic filter apparatus capable of stably keeping a filtering flux even if the inflow amt. of raw water varies largely and capable of stably obtaining treated water of high water quality. SOLUTION: In a dynamic filter apparatus wherein a dynamic filter 3 is immersed in a biological reaction tank 1 to perform filtering by using the water level difference ΔH between the water level of the biological reaction tank 1 and the water level of the open end of a filter unit 5 as drive force, a water level detection means 20 for measuring the water level of the biological reaction tank 1 and a means for adjusting the amt. of filtered water on the basis of the measured value are provided and, even if a water level varies by an increase and decrease in the inflow amt. of raw water, a filtered water amt. (filtering flux) is kept constant.

3. 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

4. 发明专利

JP2000342911A DYNAMIC FILTER BODY 失效
公开(公告)号：JP2000342911A
公开(公告)日：2000-12-12
申请号：JP16123799
申请日：1999-06-08
申请人： DAIDO HITOSHI , ASO EIJI , KURITA WATER IND LTD , NIPPON STEEL CORP , HITACHI METALS LTD
发明人： DAIDO HITOSHI , ASO EIJI , SUZUKI KAZUO , SAWADA SHIGEKI , SHIBATA TOSHIYUKI , TAKAHASHI NAOYA , OCHIAI KAZUNARI , NAGAI MUTSURO
IPC分类号： B01D29/62 , C02F3/12
摘要： PROBLEM TO BE SOLVED: To provide a dynamic filter body capable of keeping a filter flux stable for a long time by effectively washing even the interior of the filter body to prevent the accumulation of turbidity in the filter body. SOLUTION: A dynamic filter body 3 has a support, the filter cloth provided along the outer surface of the support and having a mesh size permitting suspended particles to substantially pass and a flow channel 5 of filtered water transmitted through the filter cloth and collects suspended particles by the dynamic filter layer formed on the surface of the filter cloth. An air supply means a is provided to the flow channel 5.

5. 发明专利

JP2000084376A TREATMENT OF SEWAGE 失效
公开(公告)号：JP2000084376A
公开(公告)日：2000-03-28
申请号：JP25586298
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 , OCHIAI KAZUNARI , NAGAI MUTSURO , SUZUKI KAZUO , KISHINE YOSHINAO , FUKUNAGA KAZUHISA , SAKATA MORIO
IPC分类号： B01D65/02 , C02F1/44 , C02F3/12
摘要： PROBLEM TO BE SOLVED: To provide a sewage treating method capable of continuously operating plural filtering units and also capable of preventing the deterioration of water quality of treated water. SOLUTION: In the sewage treating method in which the sewage is supplied to a sewage treating equipment provided with a biological reaction tank 1, plural filtering units 3 (31-37) immersed and arranged along the inflow direction of the sewage and in which at least one part of a periphery wall consists of a water permeable supporting body inside the tank 1, a scattering pipe for washing provided downward of a scattering pipe filtering unit 3 provided at the lower part of the biological reaction tank 1 and a waste water tank having a water level lower than that of a biological reaction tank 2, the treated water is taken out from the filtering unit 3, the filtering unit 3 is washed alternately, and also the treated water in a filtering unit adjacent to the filtering unit to be washed is discharged to the waste water tank.

6. 发明专利

JP2004122042A Grit collecting/pumping apparatus 审中-公开
标题翻译：收集/抽吸装置
公开(公告)号：JP2004122042A
公开(公告)日：2004-04-22
申请号：JP2002292044
申请日：2002-10-04
申请人： Hitachi Metals Ltd , 日立金属株式会社
发明人： SUZUKI TAKASHI , OCHIAI KAZUNARI
IPC分类号： B01D21/24 , B01D21/18 , B01D21/30
摘要： PROBLEM TO BE SOLVED: To provide a grit collecting/pumping apparatus which prevents a turbid material such as grit from being stirred up in a sedimentation basin of a sewer in a separate system, is hardly broken and is low in equipment cost and running cost.
SOLUTION: This sand collecting/pumping apparatus is provided with a plurality of nozzles 3 arranged so that a jetting spout of each of the nozzles 3 is faced to the bottom surface 2A of the sedimentation basin 2 provided with a sand collecting pit 2B, a jet pump 5 arranged in the pit 2B, a water pressurizing pump 6 and a nozzle selecting means for selecting any of the nozzles 3 being supply destinations of the pressurized water obtained by sucking, pressurizing and discharging the water of a water source by the pump 6. The settled sand accumulated on the surface 2A is swept away and collected in the pit 2B by supplying the pressurized water to the nozzle 3 selected by the nozzle selecting means through a sand collecting water pipeline 4 and jetting the pressurized water from the jetting spout of the selected nozzle 3. The pressure of the pressurized water to be supplied to each of the nozzles 3 is defined as 0.1-0.4 MPa.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了提供一种防止诸如砂粒的浑浊物质在单独系统中的下水道的沉降池中搅拌的砂粒收集/抽吸装置，几乎不破裂，并且设备成本低，运行成本。解决方案：这种集砂/抽吸装置设置有多个喷嘴3，其布置成使得每个喷嘴3的喷射喷嘴面对设置有集砂坑2B的沉降池2的底面2A ，设置在凹坑2B中的喷射泵5，水加压泵6和喷嘴选择装置，用于选择通过吸入，加压和排出水源的水来获得的加压水的目的地的任何喷嘴3 堆积在表面2A上的沉淀的沙子通过从喷嘴选择装置选择的喷嘴3中通过集砂水管道4供给加压水并将喷射的压力水喷射供给到各喷嘴3的加压水的压力被定义为0.1-0.4MPa。版权所有（C）2004，JPO

7. 发明专利

JP2002282609A SAND-COLLECTING DEVICE OF SEDIMENTATION BASIN 失效
公开(公告)号：JP2002282609A
公开(公告)日：2002-10-02
申请号：JP2001096498
申请日：2001-03-29
申请人： HITACHI METALS LTD
发明人： ITAKURA HIROSHI , MORINAGA TOSHIAKI , SUZUKI TAKASHI , OCHIAI KAZUNARI
IPC分类号： E03F5/14 , B01D21/18 , B01D21/24 , E03F5/22
摘要： PROBLEM TO BE SOLVED: To provide a sand-collecting device of a sedimentation basin facility capable of carrying out a removal work of the sediment sand without discharging water in the basin and making a power used for this less. SOLUTION: The sand-collecting device of the sedimentation basin 1 is provided with a sand-collecting pit 3 at a bottom of the basin, a plurality of trenches 4 directed to the sand-collecting pit, and nozzles for jetting water to a direction of the sand-collecting pit in the trenches. A width of the trench 300-500 mm.

8. 发明专利

JP2004122041A Sand collecting apparatus and sand collecting method 审中-公开
标题翻译： SAND收集装置和收集方法
公开(公告)号：JP2004122041A
公开(公告)日：2004-04-22
申请号：JP2002292043
申请日：2002-10-04
申请人： Hitachi Metals Ltd , 日立金属株式会社
发明人： SUZUKI TAKASHI , OCHIAI KAZUNARI
IPC分类号： B01D21/30 , B01D21/18 , B01D21/24
摘要： PROBLEM TO BE SOLVED: To adjust to a proper value the pressure of the pressurized water to be supplied to a nozzle of a sand collecting apparatus for collecting the sand accumulated on the bottom surface of a sedimentation basin by jetting water from the nozzle.
SOLUTION: This sand collecting apparatus is provided with a water pressurizing pump 6, a sand collecting pit 2B and a jet pump 5 being a sand pumping pump arranged in the pit 2B. The water of a water source is sucked, pressurized and discharged by the pump 6, which is supplied to a plurality of the nozzles 3 through sand collecting pipelines 4 and jetted through jetting spouts of the nozzles 3. By the jetted pressurized water, the sand accumulated on the bottom surface 2A of the sedimentation basin 2 is collected in the pit 2B. A supply pressure adjusting means is arranged for adjusting the pressure of the pressurized water to be supplied to each of the nozzles 3.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了适当地调整供给到采集器的喷嘴的加压水的压力，用于通过从喷嘴喷射水来收集积聚在沉降池底面上的砂。解决方案：该砂收集装置设置有水加压泵6，集砂坑2B和喷射泵5，其是布置在坑2B中的砂泵。水源的水被泵6吸入，加压并排出，泵6通过集砂管道4供给多个喷嘴3，并通过喷嘴3的喷口喷射。通过喷射的加压水，砂积聚在沉淀池2的底面2A上的物料被收集在坑2B中。供给压力调节装置用于调节供给每个喷嘴3的加压水的压力。版权所有（C）2004，JPO

9. 发明专利

JPH11699A SLUDGE THICKENER 失效
公开(公告)号：JPH11699A
公开(公告)日：1999-01-06
申请号：JP16950497
申请日：1997-06-10
申请人： HITACHI METALS LTD
发明人： MIYASAKA KUNIO , OCHIAI KAZUNARI
IPC分类号： B01D65/04 , C02F1/44 , C02F11/12
摘要： PROBLEM TO BE SOLVED: To improve sludge thickening efficiency without depending on a large- scale apparatus, by a method wherein a magnetic particle is formed on a filter membrane, a magnet blade is freely rotatably provided above that, and the magnetic particle is rubbed against the filter membrane. SOLUTION: A scraper 7 is freely rotatably provided in an inner tank 1b of a sludge thickener 1 with a rotary shaft 12. A plurality of support arms 8 are aslant upwards in an axial symmetry provided fixed to a lower part of a rotary shaft 12, and a plurality of magnet blades 10 are arranged on its lower side surface. An opening 3a is formed on a middle bottom 3 of a lower part, which is covered with a metal minute filter membrane. A ferrite particle layer 13 is formed on a metal filter membrane 11. Wastewater in the inner tank 1b is filtered with the ferrite particle layer 13 and the metal tank 1b is filtered with the ferrite particle layer 13 and the metal minute filter part 11 to prepare purified water. At that time, the magnet blade 10 is rotated together with the scraper 7, a magnetic brush with a ferrite particle of the ferrite particle layer 13 is formed, and sludge is scraped off by rubbing the brush against the metal minute filter membrane 11. Sludge thickening efficiency can be improved thereby.

10. 发明专利

JPH09192412A SEDIMENTATION BASIN SYSTEM 失效
公开(公告)号：JPH09192412A
公开(公告)日：1997-07-29
申请号：JP959896
申请日：1996-01-23
申请人： HITACHI METALS LTD
发明人： TAMURA TOSHIKAZU , HASEGAWA TETSUO , OCHIAI KAZUNARI
IPC分类号： G01B17/00 , B01D21/30 , G01B17/06
摘要： PROBLEM TO BE SOLVED: To assist the suitable operation of a sand lifting device in a system in which the conditions of deposited materials in a sand accumulation part of a sedimentation basin are indicated by indicating the distribution conditions of ups and downs of the deposited materials in the sand accumulation part as a plan together with structures such as the side wall of the sedimentation basin. SOLUTION: In a sedimentation basin 1, there are provided a sand accumulation part 3 in which deposited materials 2 are settled and a grid-shaped screen 4 in the basin bottom and on the outlet side respectively, and refuse such as residue floating in sewage is caught and is discharged to outside the sedimentation basin by a removing device. An ultrasonic sensor 5a of a detecting means 5 is installed in a position set in advance below the surface 1a of the sewage by a fitting frame 5b, angles at which ultrasonic waves are emitted, that is, the rotation angle and the elevation/depression angle are freely changed by a signal from an arithmetic controller 5c. On an indicator 6, the distribution conditions of the deposited materials 2 in the sand accumulation part 3 of the sedimentation basin 1 are indicated as picture information in real time by a plan and a cross section, together with structures such as the side wall and the sand accumulation part 3 of the sedimentation basin 1.

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