Patents Assigned to Siemens Water Technologies LLC
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Publication number: 20140183045Abstract: Systems and methods for the desalination of seawater or brackish water for the purpose of obtaining potable water. Systems may include a combination of electrodialysis and electrodeionization modules. The system configuration and process controls may achieve low energy consumption and stable operation.Type: ApplicationFiled: June 29, 2012Publication date: July 3, 2014Applicant: Siemens Water Technologies LLCInventors: Rongqiang Fu, Joseph D. Gifford, George Y. Gu, Li-Shiang Liang, Kee Hoe Ng, Michael J. Shaw
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Publication number: 20140102977Abstract: A ballasted anaerobic system for treating wastewater including at least one anaerobic treatment reactor. A weighting agent impregnation subsystem is configured to mix weighting agent with the biological flocs to form weighted biological flocs to create a weighted anaerobic sludge blanket in the at least one anaerobic treatment reactor. A weighting agent recovery subsystem is configured to recover the weighting agent from excess sludge and reintroduce the weighting agent to the weighting agent impregnation subsystem.Type: ApplicationFiled: December 2, 2013Publication date: April 17, 2014Applicant: Siemens Water Technologies LLCInventor: Steven E. Woodard
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Publication number: 20140083940Abstract: A method of cleaning a membrane surface immersed in a liquid medium with a fluid flow, including the steps of providing a randomly generated intermittent or pulsed fluid flow along the membrane surface to dislodge fouling materials therefrom. A membrane module is also disclosed comprising a plurality of porous membranes (6) or a set of membrane modules (5) and a device (11) for providing a generally randomly generated, pulsed fluid flow such that, in use, said fluid flow moves past the surfaces of said membranes (6) to dislodge fouling materials therefrom.Type: ApplicationFiled: November 26, 2013Publication date: March 27, 2014Applicant: Siemens Water Technologies LLCInventors: Fufang Zha, Gerin James, Joseph E. Zuback, Peter Zauner, Roger W. Phelps
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Publication number: 20140084511Abstract: Apparatus and methods are disclosed which reduce stress formation in potting heads for porous hollow filtration membranes. In one example, there is disclosed a potting sleeve for forming a potting head which includes a first fixed portion and a second portion which is movable relative to the first fixed portion to reduce a peripheral extent thereof. In another example, a method of mounting a porous hollow membrane in a membrane filtration apparatus includes positioning a portion of porous hollow membranes within a mold and introducing a curable potting material into the mold so as to immerse the portion of the porous hollow membranes and at least part of one or more deformable members in the potting material. The method further includes at least partially curing the potting material to form a potting head and removing the potting head and the one or more deformable members from the mold.Type: ApplicationFiled: September 23, 2013Publication date: March 27, 2014Applicant: Siemens Water Technologies LLCInventors: Peter Breffni Ackland, Michael Collignon, Ying Hao Tao
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Publication number: 20140086822Abstract: Chlorine dioxide generation systems and methods are disclosed. In some embodiments, an optical analyzer may be positioned along a reactant feed line to measure a reactant concentration. A controller may adjust a flow rate of the reactant in response to information provided by the optical analyzer.Type: ApplicationFiled: November 25, 2013Publication date: March 27, 2014Applicant: SIEMENS WATER TECHNOLOGIES LLCInventors: Edward Max Martens, Glenn Wesley Holden
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Patent number: 8673142Abstract: A system for enhancing an activated sludge process including at least one biological reactor. A weighting agent impregnation subsystem is coupled to the biological reactor for mixing biological flocs and weighting agent to impregnate the weighting agent into the biological flocs to form weighted biological flocs. A weighting agent recovery subsystem is configured to recover the weighting agent from the weighted biological flocs and reintroducing the recovered weighting agent to the weighting agent impregnation subsystem.Type: GrantFiled: July 19, 2013Date of Patent: March 18, 2014Assignee: Siemens Water Technologies LLCInventors: Steven E. Woodard, Peter G. Marston, Ionel Wechsler
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Patent number: 8658043Abstract: A water treatment system provides treated water to a point of use by removing at least a portion of any hardness-causing species contained in water from a water source, such as municipal water, well water, brackish water and water containing foulants. The water treatment system typically receives water from the water source or a point of entry and purifies the water containing at least some undesirable species before delivering the treated water to a point of use. The water treatment system has a pressurized reservoir system in line with an electrochemical device such as an electrodeionization device. The water treatment system can have a controller for adjusting or regulating at least one operating parameter of the treatment system or a component of the water treatment system. The electrochemical device can be operated at a low current and low flow rate to minimize water splitting or polarization, which minimizes scale formation.Type: GrantFiled: December 7, 2010Date of Patent: February 25, 2014Assignee: Siemens Water Technologies LLCInventors: Frederick Wilkins, Evgeniya Freydina, Aytac Sezgi, Reshma Madhusudan, Anil D. Jha
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Patent number: 8652331Abstract: A method of backwashing a membrane filtration system comprising at least one permeable membrane, preferably a hollow fiber membrane, the method comprising the step of applying a pressurized gas at a variable pressure to permeate remaining present in the system when filtration process is stopped or suspended to provide liquid for backwashing pores of the permeable membrane during a backwashing process. Also provided are methods of filtering solids from a liquid suspension using alternating liquid backwash pressures.Type: GrantFiled: August 17, 2009Date of Patent: February 18, 2014Assignee: Siemens Water Technologies LLCInventors: Fufang Zha, Zhiyi Cao
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Patent number: 8652336Abstract: In a system for decomposing organic compounds in water for use in semiconductor manufacturing, a chemical reactor vessel having a fluid inlet and a fluid outlet, a persulfate anion addition system upstream of the reactor vessel, and a light emitting device contained within the reactor vessel. The light emitting device provides light capable of decomposing persulfate anions.Type: GrantFiled: June 5, 2007Date of Patent: February 18, 2014Assignee: Siemens Water Technologies LLCInventors: Steve Donald Sitkiewitz, Gary Michael Carmignani, Lee William Fredrick
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Publication number: 20140027374Abstract: A hybrid method and system of treating wastewater with reduced energy usage is disclosed. The treatment system has a sorption system, an anaerobic digester that digests or converts at least a portion of the solids or sludge from the sorption system, and an aerobic treatment tank that partially reduces oxygen demand of a portion of the sludge from the sorption tank.Type: ApplicationFiled: September 20, 2013Publication date: January 30, 2014Applicant: SIEMENS WATER TECHNOLOGIES LLCInventors: Wenjun Liu, Edward John Jordan, George W. Smith
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Publication number: 20140021130Abstract: A hybrid method and system of treating wastewater with reduced energy usage is disclosed. The treatment system has a sorption system, an anaerobic digester that digests or converts at least a portion of the solids or sludge from the sorption system, and an aerobic treatment tank that partially reduces oxygen demand of a portion of the sludge from the sorption tank.Type: ApplicationFiled: September 20, 2013Publication date: January 23, 2014Applicant: SIEMENS WATER TECHNOLOGIES LLCInventors: Wenjun Liu, Edward John Jordan, Marc Roehl
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Patent number: 8622222Abstract: A method of cleaning a membrane surface immersed in a liquid medium with a fluid flow, including the steps of providing a randomly generated intermittent or pulsed fluid flow along the membrane surface to dislodge fouling materials therefrom. A membrane module is also disclosed comprising a plurality of porous membranes (6) or a set of membrane modules (5) and a device (11) for providing a generally randomly generated, pulsed fluid flow such that, in use, said fluid flow moves past the surfaces of said membranes (6) to dislodge fouling materials therefrom.Type: GrantFiled: May 29, 2008Date of Patent: January 7, 2014Assignee: Siemens Water Technologies LLCInventors: Fufang Zha, Gerin James, Joseph Edward Zuback, Peter Zauner, Roger William Phelps
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Patent number: 8623202Abstract: A method and system for wastewater treatment comprising a first treatment zone (11) fluidly connected to one or more further treatment zones (12, 13, 14), a membrane module (16) comprising a filter membrane positioned in or fluidly connected to the further treatment zone (14), a gravity settling device (15) fluidly connected to the first treatment zone (11) to receive overflow therefrom; and a flow control device (23) between the first treatment zone (11) and the gravity settling device (15) to control the flow of liquid therebetween.Type: GrantFiled: October 17, 2012Date of Patent: January 7, 2014Assignee: Siemens Water Technologies LLCInventor: Dennis J. Barnes
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Patent number: 8623213Abstract: A hybrid method and system of treating wastewater with reduced energy usage is disclosed. The treatment system has a sorption system, an anaerobic digester that digests or converts at least a portion of the solids or sludge from the sorption system, and an aerobic treatment tank that partially reduces oxygen demand of a portion of the sludge from the sorption tank.Type: GrantFiled: March 27, 2009Date of Patent: January 7, 2014Assignee: Siemens Water Technologies LLCInventors: Wenjun Liu, Edward J. Jordan, Joseph E. Zuback, George W. Smith
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Patent number: 8623205Abstract: A ballasted anaerobic system for treating wastewater including at least one anaerobic treatment reactor. A weighting agent impregnation subsystem is configured to mix weighting agent with the biological flocs to form weighted biological flocs to create a weighted anaerobic sludge blanket in the at least one anaerobic treatment reactor. A weighting agent recovery subsystem is configured to recover the weighting agent from excess sludge and reintroduce the weighting agent to the weighting agent impregnation subsystem.Type: GrantFiled: September 26, 2012Date of Patent: January 7, 2014Assignee: Siemens Water Technologies LLCInventor: Steven E. Woodard
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Publication number: 20140001119Abstract: A ballasted sequencing batch reactor system for treating wastewater including one or more sequencing batch reactors. A weighting agent impregnation subsystem is configured to mix biological flocs and weighting agent to form weighted biological flocs. A weighting agent recovery subsystem is configured to recover weighting agent from the weighted biological flocs and reintroduce the recovered weighting agent to the weighting agent impregnation subsystem.Type: ApplicationFiled: September 5, 2013Publication date: January 2, 2014Applicant: SIEMENS WATER TECHNOLOGIES LLCInventor: Steven E. Woodard
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Patent number: 8591740Abstract: A chlorine based biofouling control subsystem is utilized to facilitate shipboard water management systems such as ballast water management that employ filters. The biofouling control system can serve as a subsystem to promote antifouling and reduce the filter clogging due to biofouling, which improves the efficiency and effectiveness of the ballast water treatment management system. An antifouling agent of the biofouling control system breaks up the dense colonies of marine organisms being filtered or treated by the main water management systems.Type: GrantFiled: August 18, 2009Date of Patent: November 26, 2013Assignee: Siemens Water Technologies LLCInventors: Lars Nupnau, Michael Upjohn, Vadim Zolotarsky
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Patent number: 8585882Abstract: Electrochemical devices and methods for water treatment are disclosed. An electrodeionization device (100) may include one or more compartments (110) containing an ionselective media, such as boron-selective resin (170). Cyclic adsorption of target ions and regeneration of the media in-situ is used to treat process water, and may be driven by the promotion of various pH conditions within the electrochemical device.Type: GrantFiled: December 1, 2008Date of Patent: November 19, 2013Assignee: Siemens Water Technologies LLCInventors: Evgeniya Freydina, Joseph D. Gifford
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Patent number: 8540877Abstract: A ballasted sequencing batch reactor system for treating wastewater including one or more sequencing batch reactors. A weighting agent impregnation subsystem is configured to mix biological flocs and weighting agent to form weighted biological flocs. A weighting agent recovery subsystem is configured to recover weighting agent from the weighted biological flocs and reintroduce the recovered weighting agent to the weighting agent impregnation subsystem.Type: GrantFiled: September 26, 2012Date of Patent: September 24, 2013Assignee: Siemens Water Technologies LLCInventor: Steven E. Woodard