[특허]Process for purifying water

[미국특허] Process for purifying water 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01D-061/00
출원번호	US-0179861 (1994-01-11)
발명자 / 주소	Bacchus Mohammed F. Dawson Bruce M. O'Neill Gary A.
출원인 / 주소	Millipore Corporation
대리인 / 주소	Hubbard, Esq.
인용정보	피인용 횟수 : 36 인용 특허 : 8

초록 ▼

Water to be purified is passed through a reverse osmosis step to produce a pure water stream and a waste water stream. The waste water is directed to a deionization step to produce purified deionized water which is recycled to the reverse osmosis step. The process directs far less water to waste as compared to conventional reverse osmosis processes. The process also produces water of higher organic and inorganic purity than can be obtained by either reverse osmosis or deionization alone.

대표청구항 ▼

[ We claim:] [5.] A process for purifying impure water which comprises:passing a stream of impure water through a reverse osmosis step including a reverse osmosis membrane to produce a first purified water stream and a waste water stream,passing said waste water stream to a means for deionizing water to produce deionized water, directing said deionized water to said reverse osmosis step to produce a second purified water stream,and recovering said first purified water stream and said second purified water stream wherein said first purified water stream and said second purified water stream are passed through said reverse osmosis membrane only once.

이 특허에 인용된 특허 (8) 인용/피인용 타임라인 분석

Smith Verity C. (Dedham MA), High efficiency filtration with impurity concentration and ultrafiltration rejection flow recirculation.
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Hanna Milad M. (Scottsdale AZ) Fridman Jerome Y. (Scottsdale AZ), Method and apparatus for recycling R/O waste water.
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Schultheis Alexander (Wrentham MA) Landrigan Mark A. (Concord MA) Lakhani Arun (Audubon PA), Method and apparatus to detoxify aqueous based hazardous waste.
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Guter Gerald A. (215 Via Socorro San Clemente CA 92672), Process for purification of contaminated water.
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Andrews James P. (Kennersville NC) Callahan Arthur C. (Winston-Salem NC), Regeneration of used dishwashing water without chemical additives for sanitizing and spot-free rinse uses.
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Ackermann Arthur J. (Kirkwood MO) Craven Robert A. (Olivette MO), Ultra pure water system monitoring.
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Hambleton Larry G. (Olathe KS) Moss Charles A. (Lees Summit MO) Hunter Jim (Shawnee KS), Water purification machine.
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Hark Ernst F. (Rte. 7 ; Box 513 Conroe TX 97384), Water purification process.
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이 특허를 인용한 특허 (36) 인용/피인용 타임라인 분석

Oklejas, Jr., Eli, Batch-operated reverse osmosis system.
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Oklejas, Jr., Eli, Batch-operated reverse osmosis system with manual energization.
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Oklejas, Jr., Eli, Batch-operated reverse osmosis system with multiple membranes in a pressure vessel.
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Oklejas, Jr., Eli, Central pumping and energy recovery in a reverse osmosis system.
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Oklejas, Jr., Eli, Central pumping and energy recovery in a reverse osmosis system.
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Dufresne, Kevin Simon Joseph; Guibert, Denis Joel Marie, Combined microfiltration or ultrafiltration and reverse osmosis processes.
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Eldridge, Robert James; Norret, Marck; Dahlke, Thomas W.; Ballard, Mathew John; Adams, Beryn John, Complexing resins and method for preparation thereof.
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Hughes,Kenneth D., Composite materials for fluid treatment.
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Wiemers, Reginald A., Electrocoagulation apparatus with in-place electrode cleaning.
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Riad A. Al-Samadi CA, High water recovery single stage membrane process.
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Stover, Richard L.; Pique, Gonzalo G., Hybrid RO/PRO system.
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Bourke,Michael Francis; Nguyen,Hung Van, Inorganic contaminant removal from water.
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Hughes,Kenneth D., Materials for storing and releasing reactive gases.
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Hughes,Kenneth D., Membrane based fluid treatment systems.
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Wilkins, Frederick C.; Jha, Anil; Ganzi, Gary C., Method and apparatus for desalination.
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Oklejas, Jr., Eli, Method and apparatus for lubricating a thrust bearing for a rotating machine using pumpage.
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Oklejas, Jr., Eli, Method and apparatus for membrane recirculation and concentrate energy recovery in a reverse osmosis system.
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Oklejas, Jr., Eli, Method and system for performing a batch reverse osmosis process using a tank with a movable partition.
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Liao, Zhi Min; Guo, Jing Kui; Huang, Yu He; Zou, Jing; Chen, Zhi Qiang; Dai, Rui Zhi; Shi, Wen Yan; Xiong, Jian Zhong; Ji, Hai Ying, Method for treating landfill leachate.
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Jensen, Charles E.; Brunsell, Dennis A.; Beets, Larry E., Method of utilizing ion exchange resin and reverse osmosis to reduce environmental discharges and improve effluent quality to permit recycle of aqueous or radwaste fluid.
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Wiemers, Reginald A.; Kohlheb, Robert; Khalili, Bardia B.; Lipovszki, Gyorgy; Zahn, Peter H., Mobile station and methods for diagnosing and modeling site specific full-scale effluent treatment facility requirements.
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Wiemers, Reginald A.; Kohlheb, Robert; Khalili, Bardia B.; Lipovszki, Gyorgy; Zahn, Peter H., Mobile station for diagnosing and modeling site specific effluent treatment facility requirements.
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Vero, Gregory Mark; Smith, Paul, Plug-flow regeneration process.
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Sengupta, Arup K.; Li, Ping; Murray, Brendan J.; Harrison, Stuart D.; Vero, Gregory M., Process for treating concentrated salt solutions containing DOC.
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Cook, James E.; Dorsey, Steven T.; Babcock, Stephen E.; Eriksen, O. Harald, Proportioning pump, control systems and applicator apparatus.
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Hughes, Kenneth D., Reactive solutions.
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Oklejas, Jr., Eli, Reverse osmosis system with control based on flow rates in the permeate and brine streams.
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Oklejas, Jr., Eli, Reverse osmosis system with control based on flow rates in the permeate and brine streams.
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Oklejas, Jr., Eli, Reverse osmosis system with control based on flow rates in the permeate and brine streams.
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Okeljas, Jr., Eli, Reverse osmosis system with energy recovery devices.
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Oklejas, Jr., Eli, Thrust balancing in a centrifugal pump.
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Vuong,Diem Xuan, Two stage nanofiltration seawater desalination system.
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Clark, Mark M.; Riley, Robert, Water purification by polymer colloids.
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Clark,Mark M.; Riley,Robert, Water purification by polymer colloids.
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Queen,Abel; Robinson,Joel; Haas,William, Water purification system and method using reverse osmosis reject stream in an electrodeionization unit.
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Kawakami, Yoichi, Water treatment device.
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[미국특허] Process for purifying water 원문보기