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    • 1. 发明专利
    • Water purification treatment system, and control method therefor
    • 水净化处理系统及其控制方法
    • JP2013075245A
    • 2013-04-25
    • JP2011214842
    • 2011-09-29
    • Hitachi Ltd株式会社日立製作所
    • YOKOI HIROTOHAGA TETSUROSANNOMIYA YUTAKATADOKORO HIDEYUKITATE TAKAHIRO
    • C02F1/28C02F1/52C02F1/76C02F9/00G21F9/12
    • PROBLEM TO BE SOLVED: To provide a water purification treatment system constituted so as to remove iodine from raw water containing the radioactive iodine in a low concentration to supply water satisfying a temporary reference value of iodine concentration, and a method for controlling the same.SOLUTION: The water purification treatment system 100 uses various chemical agents such as a pH adjustor, a chlorine agent, activated carbon, a flocculant and the like to subject the raw water to water purification treatment. A setting part 13 sets a target ratio of iodine ions and the specific chemical form of iodine in the raw water. This setting is performed using the ratio of the specific chemical form of iodine, of which the adsorbability on activated carbon is higher than that of the iodine ions in the raw water, and the iodine ions. A control part 11A controls the injection amounts of various chemical agents on the basis of the target ratio by the setting part 13 so that the measured values of a pH meter 10a and a residual chlorine meter 10b become predetermined ranges.
    • 要解决的问题:提供一种水净化处理系统,其构造为从低浓度的含有放射性碘的原水中除去碘以提供满足碘浓度临时参考值的水,以及用于控制 相同。 解决方案:水净化处理系统100使用各种化学试剂如pH调节剂,氯剂,活性炭,絮凝剂等来对原水进行水净化处理。 设定部13在原水中设定碘离子的目标比例和碘的特定化学形式。 该设定是使用在原水中的活性炭上的吸附性高于碘离子的特定化学形式的碘和碘离子的比例进行的。 控制部11A通过设定部13基于目标比率控制各种化学试剂的注入量,使得pH计10a和残留氯计10b的测定值成为规定范围。 版权所有(C)2013,JPO&INPIT
    • 2. 发明专利
    • Concentrated-seawater discharge method for seawater desalination apparatus
    • 用于海水淡化装置的浓缩海水排放方法
    • JP2012125662A
    • 2012-07-05
    • JP2010276523
    • 2010-12-13
    • Hitachi Ltd株式会社日立製作所
    • HAGA TETSUROYOKOI HIROTOSANNOMIYA YUTAKASUMIKURA MISAKIKAGEYAMA KOJITACHI TAKAHIRO
    • C02F1/00B01D61/02C02F1/44
    • Y02A20/131
    • PROBLEM TO BE SOLVED: To solve a problem that if concentrated seawater, discharged from a seawater desalination apparatus, is discharged in a sea area, salinity of the sea area becomes higher than salinity of an ordinary sea area due to high salinity of the concentrated seawater, so that fear for influence to a marine ecosystem is generated, therefore a dilution method for diluting the concentrated seawater with seawater is adopted as a countermeasure, but it is hard to reduce the salinity to the ordinary seawater.SOLUTION: In the seawater desalination apparatus 3, the seawater taken is pressurized to be permeated through a reverse osmosis membrane, so that permeated water is obtained and the concentrated seawater impermeable through the reverse osmosis membrane is discharged to the outside of an system. The concentrated seawater from the seawater desalination apparatus 3 is mixed with treated water discharged from a sewage treatment plant and the mixed concentrated seawater, mixed with the treated water, is discharged to the sea area.
    • 要解决的问题:为了解决如果从海水淡化装置排出的浓缩海水在海域中排出的问题,则由于盐度高,海域的盐度变得高于普通海域的盐度 浓缩海水,造成对海洋生态系统的影响的恐惧,因此采用海水稀释浓缩海水的稀释方法作为对策,但难以降低普通海水的盐度。 解决方案:在海水淡化装置3中,将采集的海水加压透过反渗透膜,得到渗透水,通过反渗透膜不透过的浓缩海水排出到系统外 。 将来自海水淡化装置3的浓缩海水与从污水处理厂排出的处理水混合,并将与处理水混合的混合浓缩海水排放到海域。 版权所有(C)2012,JPO&INPIT
    • 3. 发明专利
    • Flocculant injection control system
    • FLOCCULANT注射控制系统
    • JP2011067776A
    • 2011-04-07
    • JP2009221913
    • 2009-09-28
    • Hitachi Ltd株式会社日立製作所
    • SANNOMIYA YUTAKAYOKOI HIROTOHAGA TETSUROKAGEYAMA KOJITADOKORO HIDEYUKITATE TAKAHIRO
    • B01D21/30B01D21/32B03B5/00C02F1/52
    • PROBLEM TO BE SOLVED: To provide a flocculant injection control system which enables a further shortening of the time-delay of a feedback correction, is applicable also when raw water is in a high-turbidity, and can calculate a suitable flocculant injection amount.
      SOLUTION: The system comprises a mixing basin 440 injecting a flocculant to raw water 410 to form a flock, a sedimentation basin 470, a raw water sensor 420, a first water collecting means 610 collecting raw water 410, a turbidity classifier 580 having a rotating filter and obtaining turbidity classification-treated water 600, a flocculation test apparatus 620 obtaining a supernatant solution 630 of the turbidity classification-treated water 600, a second water collecting means 570 collecting flocculant injection water between the mixing basin 440 and the sedimentation basin 470, a flock classifier 530 having a rotating filter and obtaining flock classification-treated water 550, a supernatant solution-turbidity sensor 640, a classification-treated water turbidity sensor 560, a control means 100 having an injection ratio calculation function and an injection ratio correction function to decide the injection amount of the flocculant, and a water purification facility control means 300 controlling chemical dosing equipment 450.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了提供能够进一步缩短反馈校正的延时的絮凝剂注入控制系统,当原水处于高浊度时也可应用,并且可以计算合适的絮凝剂注入 量。 解决方案:该系统包括将絮凝剂注入原水410以形成絮凝剂的混合盆440,沉淀池470,原水传感器420,收集原水410的第一收水装置610,浑浊分级器580 具有旋转过滤器并获得浊度分级处理水600,获得浊度分级处理水600的上清液630的絮凝测试装置620,在混合盆440和沉降之间收集絮凝剂注入水的第二收水装置570 盆470,具有旋转过滤器并获得鸡群分类处理水的鸡群分类器530,上清溶液 - 浊度传感器640,分级处理水浊度传感器560,具有喷射比计算功能和喷射的控制装置100 比例校正功能来确定絮凝剂的注入量,以及净水设备控制装置30 0控制化学剂量设备450.版权所有(C)2011,JPO&INPIT
    • 4. 发明专利
    • Method and apparatus for injecting flocculant in water clarifying process
    • 用于注射水中澄清过程的方法和装置
    • JP2007098236A
    • 2007-04-19
    • JP2005289496
    • 2005-10-03
    • Hitachi Ltd株式会社日立製作所
    • WATANABE SHOJIENBUTSU ICHIROHAGA TETSUROKAGEYAMA KOJITAKEMOTO TAKESHIHARA NAOKI
    • C02F1/52B01D21/01B01D21/30
    • PROBLEM TO BE SOLVED: To provide a method and an apparatus for injecting a flocculant in a water clarifying process by which the flocculant can be properly injected even in high turbidity raw water and good flocculation precipitation treatment liquid can be stably maintained. SOLUTION: Two kinds of quantities of suspensoid in raw water, turbidity and suspensoid concentration, and particle size distribution of the suspensoid are measured and property coefficients and average or medium particle size of the suspensoid are obtained from these measured values. From pattern information on measured particle size distribution, a relational formula between two kinds of property coefficients input in advance or suspensoid particle size and flocculant injection coefficient per unit suspensoid quantity is selected. By using the selected relational formula, the flocculant injection coefficient per unit suspensoid quantity corresponding to property coefficient arithmetic value or suspensoid particle size arithmetic value is calculated. By using the flocculant injection coefficient and the suspensoid quantity, a flocculant injection ratio per unit volume is obtained and flocculant injection quantity corresponding to a raw water flow rate is operated. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种在絮凝剂注入絮凝剂的方法和装置中,即使在高浊度原水中也可以适当地注入絮凝剂,并且可以稳定地保持良好的絮凝沉淀处理液。

      解决方案:测量原水中的两种悬浮液,浊度和悬浮液浓度,以及悬浮液的粒径分布,并从这些测量值获得悬浮体的性能系数和平均或中等粒径。 从测量粒度分布的模式信息中,选择预先输入的两种属性系数或悬浮粒度和每单位悬浮液量的絮凝剂注入系数之间的关系式。 通过使用选定的关系式,计算与属性系数算术值或悬浮粒度算术值对应的每单位悬浮液量的絮凝剂注入系数。 通过使用絮凝剂注入系数和悬浮液量,获得每单位体积的絮凝剂注入量,并且操作对应于原水流量的絮凝剂注入量。 版权所有(C)2007,JPO&INPIT

    • 6. 发明专利
    • WATER PURIFICATION PLANT WATER TREATMENT SYSTEM
    • JP2000042307A
    • 2000-02-15
    • JP21065298
    • 1998-07-27
    • HITACHI LTD
    • HAGA TETSUROOZAKI MICHINORIWATANABE SHOJIHARA NAOKI
    • C02F1/44B01D24/46B01D29/62C02F1/52
    • PROBLEM TO BE SOLVED: To permit the utilization of the waste water used for backwashing of a filtration basin and the waste water discharged accompanying the mud discharge operation of a settling basin as pure water without joining the waste water with raw water by providing the system with a membrane filtration means for filtering the waste water described above to the pure water. SOLUTION: The settling treatment water SW from which floc is separated in the settling basin 7 is introduced to the filtration basin 8 disposed on the downstream side of the settling basin 7. The filter water FW from the filtration basin 8 is thereafter sent to a water purification basin and is supplied from the water purification basin to a consumption end. A backflow washing pump 11 supplies the washing water WW from a backwashing water tank 12 disposed on the downward side of the filtration basin 8 via a backflow washing pipe 13 to the outlet side of the filtration basin 8. The washing water WW supplied to the filtration basin 8 washes the inside of a filter bed 10 and is discharged together with the residues in the bed 10 as backwashing waste water BD from the filtration basin 8. A backwashing waste water supply pump 15 supplies the backwashing waste water BD discharged from the filtration basin 8 via a backwashing waste water pipe 16 to a membrane filtration device 17. The backwashing waste water BD subjected to a membrane filtration treatment in the membrane filtration device 17 is obtd. as permeated water PW after the membrane filtration.
    • 8. 发明专利
    • HIGHLY ADVANCED WATER-TREATMENT METHOD
    • JPH10192874A
    • 1998-07-28
    • JP434097
    • 1997-01-14
    • HITACHI LTD
    • MORI TOSHIKATSUHAGA TETSUROKUBOTA MASAYOSHINAGAYAMA KOUSEIWATANABE SHOJIBABA KENJI
    • C02F1/78B01J23/42B01J23/50
    • PROBLEM TO BE SOLVED: To efficiently extract the effectiveness of a catalyst at the time of ozone oxidation by oxidizing an object substance to be treated by ozone in the absence of the catalyst, allowing the resultant object substance to adsorb on the catalyst, and after that, oxidizing again by ozone in highly advanced water treatment comprising ozone oxidation process of the object substance to be treated in raw water. SOLUTION: A reactor 5 is constituted of an ozone oxidation tank 1, an adsorption tank 2, a catalytic oxidation tank 3, and a catalyst recovering apparatus 4 and raw water 6 overflowed the ozone oxidation tank 1 flows in the adsorption tank 2 and the catalyst 8 adsorbing the object substance to be treated is transported to the catalytic oxidation tank 3. Together with the catalyst 8, the treated water 10 which is ozone-oxidized in the catalytic oxidation tank 3 is sent to the catalyst recovering apparatus 4 and the catalyst 8 is there recovered and turned back to the adsorption tank 2 and the treated water 10 is sent to the next line. Raw water 6 is supplied from the bottom part of the ozone oxidation tank 1 and air 7 containing ozone is blow from the bottom part of the tank and at the same time, air 9 containing ozone is blown from the bottom part of the catalytic oxidation tank 3, so that oxidation decomposition of the object substance to be treated is carried out at high removal efficiency.