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1. 发明专利

JP2004202387A Sewage disposal treatment method 审中-公开
公开(公告)号：JP2004202387A
公开(公告)日：2004-07-22
申请号：JP2002374960
申请日：2002-12-25
申请人： Ebara Corp , Hitachi Metals Ltd , Kurita Water Ind Ltd , Nishihara Environment Technology Inc , 日立金属株式会社 , 栗田工業株式会社 , 株式会社荏原製作所 , 株式会社西原環境テクノロジー
发明人： KATA TAKAYUKI , ICHIHARA AKIRA , YOSHIKAWA TAICHI , DEGUCHI TATSUYA , IMAI KAZUO , FUJIWARA YASUHISA , YAMADA YUJI , SEKINE YASUKI , SHINADA TSUKASA , KAMO KAZUHISA , SAKAMOTO YUKO , RI TOSEI
IPC分类号： C02F1/44 , C02F3/30
摘要： PROBLEM TO BE SOLVED: To provide a sewage disposal treatment method by which a system composition is simplified, also, the reduction of treatment time can be attained, and further, dephosphorization and denitrification can stably be performed with high efficiency.
SOLUTION: The treatment method consists of a process composition where sewage is first received into an oxygen free tank 3 and is subjected to oxygen free treatment; water flowing out from the oxygen free tank 3 is introduced into an anaerobic tank 2, and anaerobic treatment is performed; water flowing out from the anaerobic tank 2 is introduced into an aerobic tank 4, and aerobic treatment is performed; further, solid-liquid separation is performed by a membrane separation device 9 provided inside the aerobic tank 4; activated sludge after the solid-liquid separation is returned from the aerobic tank 4 to the oxygen free tank 3; and the sewage is charged into the oxygen free tank 3 and the anaerobic tank 2 so as to be branched.
COPYRIGHT: (C)2004,JPO&NCIPI

2. 发明专利

JP2004322100A Device for immersion type membrane separation 有权
公开(公告)号：JP2004322100A
公开(公告)日：2004-11-18
申请号：JP2004235187
申请日：2004-08-12
申请人： Kurita Water Ind Ltd , 栗田工業株式会社
发明人： SAWADA SHIGEKI , IMAI KAZUO
IPC分类号： B01D65/02 , C02F1/44
摘要： PROBLEM TO BE SOLVED: To efficiently suppress development of an attached layer on a membrane surface without deepening an immersion tank and with a little air.
SOLUTION: In a device for immersion type membrane separation wherein a membrane element is immersed in the immersion tank to perform separation processing, an air siphon chamber 17 is installed below a membrane 15 constituting the membrane element 12 and is connected with an air supply tube 35, and after intermittent blow-off of air stagnating in the air siphon chamber 17 from an air outlet 27 at a blast, a mass of air bubbles blown off from the air outlet 27 is brought into contact with the membrane 15.
COPYRIGHT: (C)2005,JPO&NCIPI

3. 发明专利

JP2006218361A Apparatus and method for treating water 审中-公开
标题翻译：装置和处理水的方法
公开(公告)号：JP2006218361A
公开(公告)日：2006-08-24
申请号：JP2005032531
申请日：2005-02-09
申请人： Kurita Water Ind Ltd , 栗田工業株式会社
发明人： IMAI KAZUO
IPC分类号： C02F1/32 , B01D63/02 , B01D65/10 , C02F1/44 , C02F1/50 , C02F1/76
摘要： PROBLEM TO BE SOLVED: To provide an apparatus for treating water capable of supplying safe water while reducing a running cost, and an administrative and maintenance expense.
SOLUTION: The apparatus for treating water comprising a raw water tank 1, a hollow fiber membrane filter 2, an ultraviolet irradiation device 11 and a chloride agent loading device 15 includes membrane break sensing means 10 at the latter step of the hollow fiber membrane filter 2 and a controller (control means) 12 for changing an ultraviolet irradiation amount of the ultraviolet irradiation device 11 corresponding to the sensed result of the membrane break of the hollow fiber membrane filter 2 by the membrane break sensing means 10. For, example, the controller 12 terminates a drive of the ultraviolet irradiation device 11 when the membrane break is not sensed by the membrane break sensing means 10 and drives the ultraviolet irradiation device 11 when the membrane break is detected.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种处理能够提供安全水的水的装置，同时降低运行成本，以及管理和维护费用。解决方案：包含原水槽1，中空纤维膜过滤器2，紫外线照射装置11和氯化剂装载装置15的处理水的装置包括在中空纤维的后一步骤的膜断裂传感装置10 膜过滤器2和用于通过膜断裂检测装置10改变与中空纤维膜过滤器2的膜破裂的感测结果相对应的紫外线照射装置11的紫外线照射量的控制器（控制装置）12。当膜断裂检测装置10未检测到膜断裂并且当检测到膜断裂时驱动紫外线照射装置11，控制器12终止紫外线照射装置11的驱动。版权所有（C）2006，JPO＆NCIPI

4. 发明专利

JP2006167582A Membrane filtration method of organic matter- containing water 审中-公开
标题翻译：含有机含水的膜过滤方法
公开(公告)号：JP2006167582A
公开(公告)日：2006-06-29
申请号：JP2004363110
申请日：2004-12-15
申请人： Kurita Water Ind Ltd , 栗田工業株式会社
发明人： IMAI KAZUO , SAWADA SHIGEKI
IPC分类号： C02F1/44 , B01D65/06
摘要： PROBLEM TO BE SOLVED: To prevent increase of membrane pressure difference and to keep filtration flux density of the membrane stable over a long period in membrane filtration of organic matter-containing water, by suppressing chemical washing frequency and amount of chemical use, and preventing deterioration of the membrane.
SOLUTION: This membrane filtration method of organic matter-containing water comprises a water-passing process for treating organic matter-containing water by passing the water through a membrane filtration apparatus, and a chemical washing process for washing the membrane of the membrane filtration apparatus. The chemical washing process comprises a first chemical washing process after the water-passing process for a given period (a), and a second chemical washing process using a chemical with different components and/or concentration from that for the first chemical washing. The second chemical washing process is performed when a period b longer than the given period (a) has passed from the previous second washing, or the membrane pressure difference has increased higher than a given value.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题为了防止膜压差的增加，并且通过抑制化学洗涤频率和化学品使用量，通过长期将膜的过滤通量密度长期保持在含有机物的水的膜过滤中，并防止膜的劣化。解决方案：含有机物的水的膜过滤方法包括通过使水通过膜过滤装置来处理含有有机物的水的通水方法，以及用于洗涤膜的膜的化学洗涤方法过滤装置。化学洗涤方法包括在给定时间段（a）的通水过程之后的第一次化学洗涤过程，以及使用与第一次化学洗涤不同成分和/或浓度的化学品的第二次化学洗涤过程。当比前一次第二次洗涤时间长于给定时间（a）的时间b或膜压力差已经增加到高于给定值时，进行第二次化学洗涤过程。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JP2005288442A Method for washing membrane module 有权
标题翻译：洗涤膜模块的方法
公开(公告)号：JP2005288442A
公开(公告)日：2005-10-20
申请号：JP2005199075
申请日：2005-07-07
申请人： Kurita Water Ind Ltd , 栗田工業株式会社
发明人： SAWADA SHIGEKI , TAKEUCHI OSAMU , IMAI KAZUO
IPC分类号： B01D65/06 , C02F1/44 , C02F1/52
摘要： PROBLEM TO BE SOLVED: To provide a method for washing membrane module capable of efficiently washing membrane separation equipment and unnecessitating treatment of washing waste liquid. SOLUTION: Acid and alkali are alternately injected into a membrane module 4 and, thereafter, the injected acid and alkali are respectively drawn out of a raw water chamber 4a. In accordance with water quality of raw water in the membrane separation equipment, alkali washing after acid washing or acid washing after alkali washing is properly selected, at the same time, respective concentrations of chemicals are adjusted to perform washing, thereby, the effective washing can be performed, a high washing effect can be obtained with chemicals of a dilute concentration and the membrane performance can be effectively restored. By using the acid and alkali by an equivalent quantity, waste water disposal of the washing waste liquid is made unnecessary and it is made possible to mix and neutralize acid washing waste liquid and alkali washing waste liquid and discharge the mixed and neutralized waste liquid without providing a separate waste water processing apparatus. Because the injected acid and alkali is drawn out from the raw water chamber side, the contamination of the permeate water chamber side can be prevented. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够有效洗涤膜分离设备并且不需要处理洗涤废液的洗涤膜组件的方法。解决方案：将酸和碱交替地注入膜组件4中，然后将注入的酸和碱分别从原水室4a中抽出。根据膜分离设备中原水的水质，碱洗后酸洗或酸洗后碱洗，同时调整各浓度的化学品进行洗涤，从而有效洗涤可以通过稀释浓度的化学品获得高洗涤效果，并且可以有效地恢复膜的性能。通过使用相当量的酸和碱，不需要废水处理，可以将酸洗废液和碱洗涤废液进行混合和中和，并排出混合和中和的废液，而不提供单独的废水处理设备。由于注入的酸和碱从原水室侧被抽出，所以可以防止渗透水室侧的污染。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JPH1015365A METHOD FOR CLEANING MEMBRANE 失效
公开(公告)号：JPH1015365A
公开(公告)日：1998-01-20
申请号：JP17500996
申请日：1996-07-04
申请人： KURITA WATER IND LTD
发明人： SAWADA SHIGEKI , IMAI KAZUO
IPC分类号： B01D65/06 , B01D65/02
摘要： PROBLEM TO BE SOLVED: To carry out a process in which pollutants adherent to and are deposited on the surface of a membrane are washed out and removed efficiently with a small amount of backwashing water by a method in which when chlorine water is made to backflow through a membrane module from the secondary side of the membrane to the primary side to wash the membrane, after the passage of a prescribed time from the backflow of chlorine water, retained water on the primary side of the membrane is discharged outside a system. SOLUTION: Filtrate which is obtained by passing raw water in a raw water tank 1 through a membrane module 2 from the primary side 2A of the module 2 to the secondary side 2B and passed through a filtrate tank 3 is taken out as treated water. Besides, when the membrane is backwashed, pumps P1, P2 are stopped, valves V1-V3 are closed, and pumps P3, P4 are actuated. In this way, a sodium hypochlorite aqueous solution is injected into the filtrate from the tank 3 to prepare chlorine water, which is made to backflow from the secondary side 2B to the primary side 2A. The primary side 2A is filled with chlorine water, the pumps P3, P4 are stopped, after the elapse of a prescribed length of time, the pump P1 is actuated, the valve V1 is opened, raw water in the tank 1 is introduced to the primary side 2A, and chlorine water is discharged outside a system.

7. 发明专利

JPH08206471A KEEPING OF MEMBRANE MODULE 失效
公开(公告)号：JPH08206471A
公开(公告)日：1996-08-13
申请号：JP1580795
申请日：1995-02-02
申请人： KURITA WATER IND LTD
发明人： TAKEUCHI OSAMU , IMAI KAZUO
IPC分类号： B01D63/02 , B01D65/00
摘要： PURPOSE: To prevent the damage of the membrane of a membrane module during keeping by freezing and to reduce or dispense with waste fluid treatment for keeping. CONSTITUTION: A freezing-point depression agent composed of inorg. salts is added to a membrane module. By this method, the freezing of the membrane module during keeping is prevented by the freezing-point depression by the freezing-point depression agent. Since the freezing-point depression agent is generally easy to wash and waste fluid treatment is unnecessary, washing treatment is reduced at the start time of operation after keeping and waste fluid treatment is reduced or dispensed with.

8. 发明专利

JPH08281079A FLAT MEMBRANE ELEMENT FOR DIPPING TYPE MEMBRANE SEPARATION APPARATUS 失效
公开(公告)号：JPH08281079A
公开(公告)日：1996-10-29
申请号：JP10782095
申请日：1995-04-10
申请人： KURITA WATER IND LTD
发明人： SAWADA SHIGEKI , IMAI KAZUO
IPC分类号： B01D63/08
摘要： PURPOSE: To prevent large inflation of membrane due to hydraulic pressure when permeated water within flat membrane element backflows through the membrane at the time of operation stop of the flat membrane element which is vertically arranged in the water and samples permeated water through the membrane and to enhance water sampling efficiency of permeated water. CONSTITUTION: This apparatus has a main frame 10 wherein membranes are stretched around on both of front and rear surfaces and each one is lined vertically keeping a flow passage interval toward front and rear. Flat membrane element for dipping type membrane separation apparatus samples permeated water filtrated through the membrane out of raw water streaming upward through flow passage interval. Projecting lines 17, 18 are formed projectingly contacting with flat membrane element arranged vertically toward front and rear, meeting cross like X on both surfaces front and rear wherein the main frame membrane is stretched around.

9. 发明专利

JPH08117747A WATER TREATMENT APPARATUS 失效
公开(公告)号：JPH08117747A
公开(公告)日：1996-05-14
申请号：JP25519094
申请日：1994-10-20
申请人： KURITA WATER IND LTD
发明人： IMAI KAZUO , SAWADA SHIGEKI , TAKEUCHI OSAMU
IPC分类号： B01D21/30 , C02F1/44 , C02F1/52
摘要： PURPOSE: To control the addition amt. of a flocculant to the optimum amt. while keeping membrane separation capacity high to perform stable treatment by measuring the ultraviolet absorbancy of membrane filtered water from which a suspended substance is removed and performing feedback control on the basis of the measured value of ultraviolet absorbancy. CONSTITUTION: The flocculant in a flocculant storage tank 4 is injected into the raw water of piping 11 from piping 15 equipped with a pump P2. At this time, an ultraviolet absorptiometer 6 measuring the ultraviolet absorbancy of the membrane filtered water discharged from a membrane separation part 3 is provided to piping 14 and the operation of a flocculant injection pump P2 is adjusted on the basis of the measured value of the ultraviolet absorptiometer 6 by a control part 7 to control the injection amt. of the flocculant. The ultraviolet absorptiometer 6 measuring the ultraviolet absorbancy of the membrane filtered water from the membrane separation part 3 measures the ultraviolet absorbancy within a wavelength range of 200-500nm of the membrane filtered water.

10. 发明专利

JPH06182338A MEMBRANE SEPARATING DEVICE 失效
公开(公告)号：JPH06182338A
公开(公告)日：1994-07-05
申请号：JP33588392
申请日：1992-12-16
申请人： KURITA WATER IND LTD
发明人： SAWADA SHIGEKI , IMAI KAZUO , TAKEUCHI OSAMU
IPC分类号： B01D61/18 , B01D65/02 , B01D65/08 , C02F1/44
摘要： PURPOSE:To control the adhesion and growth of a biological layer (slime) to a membrane face and retain a water permeating flux to the membrane face at a high level without providing the high flow rate on the membrane face of a membrane separating device and applying the operation of flowing suspen sion water or gas-liquid mixed liquid containing particles and scraping off an adhesion layer on the membrane face in a membrane separating device using biologically treated water from a biological reaction tank as raw water. CONSTITUTION:In the membrane separating device in which water in a storage tank 3 for permeated water is flowed backward to a membrane separating device main body 2 through an intake line 13 for backwashing, a chlorine injection means (pump P2, piping 16) for injection chlorine in a chlorine source tank 4 for the given time before storing backwash is mounted on the permeated water intake line 13.

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