Patents Assigned to Siemens Water Technologies Corp.
  • Publication number: 20140175009
    Abstract: 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: Application
    Filed: February 24, 2011
    Publication date: June 26, 2014
    Applicant: Siemens Water Technologies Corp.
    Inventors: Wenjun Liu, Edward John Jordan, George W. Smith
  • Publication number: 20110233146
    Abstract: Some aspects of the invention can involve compositions, systems, and related techniques that control or reduce objectionable odor characteristics of a body or a stream of wastewater. The compositions, systems, and related techniques can comprise one or more compounds that adjust metabolic activity of at least a portion of microorganisms in wastewater to inhibit or disfavor the formation of at least one objectionable odorous compound or species and one or more compounds that modify, shift, or promote one or more states or characteristics of one or more objectionable odorous species in wastewater. The metabolic modifying compound can be an anthraquinone and the state modifying compound can be an alkaline or pH-elevating compound.
    Type: Application
    Filed: September 24, 2010
    Publication date: September 29, 2011
    Applicant: Siemens Water Technologies Corp.
    Inventors: James Vaughan Harshman, David Leonard Morano
  • Publication number: 20110210266
    Abstract: A method and system of providing ultrapure water for semiconductor fabrication operations is provided. The water is treated by utilizing a free radical scavenging system and a free radical removal system. The free radical scavenging system can utilize actinic radiation with a free radical precursor compound, such as ammonium persulfate. The free radical removal system can comprise use of a reducing agent. The ultrapure water may be further treated by utilizing ion exchange media and degasification apparatus. A to control system can be utilized to regulate addition of the precursor compound, the intensity of the actinic radiation, and addition of the reducing agent to the water.
    Type: Application
    Filed: January 17, 2011
    Publication date: September 1, 2011
    Applicant: SIEMENS WATER TECHNOLOGIES CORP.
    Inventor: Bruce Lee Coulter
  • Publication number: 20110210048
    Abstract: A method and system of providing ultrapure water for semiconductor fabrication operations is provided. The water is treated by utilizing a free radical scavenging system and a free radical removal system. The free radical scavenging system can utilize actinic radiation with a free radical precursor compound, such as ammonium persulfate. The free radical removal system can comprise use of a reducing agent. The ultrapure water may be further treated by utilizing ion exchange media and degasification apparatus. A control system can be utilized to regulate addition of the precursor compound, the intensity of the actinic radiation, and addition of the reducing agent to the water.
    Type: Application
    Filed: January 17, 2011
    Publication date: September 1, 2011
    Applicant: SIEMENS WATER TECHNOLOGIES CORP.
    Inventor: Bruce Lee Coulter
  • Publication number: 20110210079
    Abstract: A system and method for the treatment of process streams. A catalyst mediates a wet oxidation process at elevated temperatures and pressures for treating at least one undesirable constituent in an aqueous mixture. A catalyst may be selected for its solubility at a detected pH level of the aqueous mixture. Alternatively, a pH level of the aqueous mixture may be adjusted to solubilize a selected catalyst and/or maintain the selected catalyst in a soluble form. A controller in communication with a pH sensor may be configured to generate a control signal to adjust the pH level of the aqueous mixture in response to the pH sensor registering a pH level outside a predetermined pH solubility range for a selected catalyst.
    Type: Application
    Filed: April 6, 2011
    Publication date: September 1, 2011
    Applicant: SIEMENS WATER TECHNOLOGIES CORP.
    Inventors: Chad L. Felch, Todd Wingers, Timothy Schleusner, Bryan Kumfer, Clayton Maugans
  • Publication number: 20110210077
    Abstract: A method and system of providing ultrapure water for semiconductor fabrication operations is provided. The water is treated by utilizing a free radical scavenging system and a free radical removal system. The free radical scavenging system can utilize actinic radiation with a free radical precursor compound, such as ammonium persulfate. The free radical removal system can comprise use of a reducing agent. The ultrapure water may be further treated by utilizing ion exchange media and degasification apparatus. A control system can be utilized to regulate addition of the precursor compound, the to intensity of the actinic radiation, and addition of the reducing agent to the water.
    Type: Application
    Filed: January 17, 2011
    Publication date: September 1, 2011
    Applicant: SIEMENS WATER TECHNOLOGIES CORP.
    Inventor: Bruce Lee Coulter
  • Publication number: 20110209530
    Abstract: A method and system of providing ultrapure water for semiconductor fabrication operations is provided. The water is treated by utilizing a free radical scavenging system and a free radical removal system. The free radical scavenging system can utilize actinic radiation with a free radical precursor compound, such as ammonium persulfate. The free radical removal system can comprise use of a reducing agent. The ultrapure water may be further treated by utilizing ion exchange media and degasification apparatus. A control system can be utilized to regulate addition of the precursor compound, the intensity of the actinic radiation, and addition of the reducing agent to the water.
    Type: Application
    Filed: January 17, 2011
    Publication date: September 1, 2011
    Applicant: SIEMENS WATER TECHNOLOGIES CORP.
    Inventor: Bruce Lee Coulter
  • Publication number: 20110210267
    Abstract: A method and system of providing ultrapure water for semiconductor fabrication operations is provided. The water is treated by utilizing a free radical scavenging system and a free radical removal system. The free radical scavenging system can utilize actinic radiation with a free radical precursor compound, such as ammonium persulfate. The free radical removal system can comprise use of a reducing agent. The ultrapure water may be further treated by utilizing ion exchange media and degasification apparatus. A control system can be utilized to regulate addition of the precursor compound, the intensity of the actinic radiation, and addition of the reducing agent to the water.
    Type: Application
    Filed: January 17, 2011
    Publication date: September 1, 2011
    Applicant: SIEMENS WATER TECHNOLOGIES CORP.
    Inventor: Bruce Lee Coulter
  • Publication number: 20110203992
    Abstract: 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: Application
    Filed: February 24, 2011
    Publication date: August 25, 2011
    Applicant: Siemens Water Technologies Corp.
    Inventors: Wenjun Liu, Edward John Jordan, George W. Smith
  • Publication number: 20110198239
    Abstract: A process for the simultaneous determination of chlorine and chlorate in sodium hypochlorite. First and second streams of sodium hypochlorite are provided. The first stream is treated to generate iodine indicative of chlorine. The second stream is treated to generate iodine indicative of chlorine and chlorate. The iodine of the first stream is subjected to an amperometric measuring cell to generate a first current proportional to a chlorine concentration of the first stream. The iodine of the second stream is subjected to an amperometric measuring cell to generate a second current proportional to the chlorine and chlorate concentration in the second stream. The first current is subtracted from the second current to determine an amount of chlorate.
    Type: Application
    Filed: September 29, 2010
    Publication date: August 18, 2011
    Applicant: SIEMENS WATER TECHNOLOGIES CORP.
    Inventor: Kevin Anthony Foster
  • Publication number: 20110180477
    Abstract: A low energy system and process for seawater desalination wherein the system has at least an electrodialysis apparatus that produces partially desalinated water and a brine by-product, an ion exchange softener, and at least one electrodeionization apparatus. The softener treats the partially desalinated water stream to remove or reduce the amount of scaling material in order to maintain deionization apparatus efficiency and reduce energy consumption. The softener has the capability of removing a higher ratio of calcium ions to magnesium ions than is in the partially desalinated stream, thereby reducing softener size and energy use. The deionization apparatus produces product water of the desired properties. The brine stream may be used to regenerate the softener.
    Type: Application
    Filed: April 3, 2009
    Publication date: July 28, 2011
    Applicant: SIEMENS WATER TECHNOLOGIES CORP.
    Inventors: Gary C. Ganzi, Li-Shiang Liang, Frederick C. Wilkins, Swee Hoe Chua
  • Publication number: 20110168609
    Abstract: A method and system of controlling addition of a treating agent based on a control function comprising a plurality of demand values is disclosed. Process parameters of a fluid to be treated are measured and one or more control signals are generated based on the measured process values and the control function. The control signals are used to actuate a treating agent dosing system and also used to monitor and compare the levels, status or condition of the treating agent. Additional features of the invention compensate for rain events.
    Type: Application
    Filed: January 21, 2011
    Publication date: July 14, 2011
    Applicant: SIEMENS WATER TECHNOLOGIES CORP.
    Inventors: Brett T. McQuade, David L. Morano
  • Publication number: 20110163049
    Abstract: The present invention relates generally to a system and method for treating wastewater in a filter media apparatus having a draft tube system. The filter media may be walnut shell media.
    Type: Application
    Filed: September 23, 2009
    Publication date: July 7, 2011
    Applicant: Siemens Water Technologies Corp.
    Inventors: Chad L. Felch, Michael Howdeshell, Eric A. Lorge, Bryan J. Kumfer, Stuart J. Munson, Matthew Patterson
  • Publication number: 20110147308
    Abstract: A charged porous polymeric membrane comprises a porous polymeric membrane substrate comprising a polymeric membrane material and a first polymer having a first functional group, the first polymer is compatible with the membrane material, and a charged polymer has a second functional group, the charged polymer can react with the first polymer to bond the charged polymer to the first polymer, forming a charged coating on the membrane outer and inner surfaces. The membrane may be a microporous or an ultrafiltration membrane. The membrane may be a hollow fiber, flat sheet, or tubular membrane. Methods of manufacturing the membranes and method of using of the membranes to remove viral particles from contaminated water are further described.
    Type: Application
    Filed: December 20, 2010
    Publication date: June 23, 2011
    Applicant: Siemens Water Technologies Corp.
    Inventors: Geoffrey JOHNSTON-HALL, Heinz-Joachim Muller, Dongliang Wang
  • Publication number: 20110139729
    Abstract: A chlorine based bio-fouling 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: Application
    Filed: August 18, 2009
    Publication date: June 16, 2011
    Applicants: SIEMENS WATER TECHNOLOGIES CORP., SIEMENS AKTIENGESELLSCHAFT
    Inventors: Lars Nupnau, Michael Upjohn, Vadim Zolotarsky
  • Publication number: 20110139724
    Abstract: A composition and method for reducing a concentration of chlorite in water. The composition comprises a mixture of ferrous iron and a polyaluminum chloride. The mixture is contacted with a water containing chlorite.
    Type: Application
    Filed: August 28, 2009
    Publication date: June 16, 2011
    Applicant: Siemens Water Technologies Corp.
    Inventor: Glenn W. Holden
  • Publication number: 20110139715
    Abstract: A method of backwashing a membrane filtration system comprising at least one permeable membrane, preferably a hollow fibre membrane, the method comprising the step of applying a pressurised 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: Application
    Filed: August 17, 2009
    Publication date: June 16, 2011
    Applicant: SIEMENS WATER TECHNOLOGIES CORP.
    Inventors: Fufang Zha, Zhiyi Cao
  • Publication number: 20110132839
    Abstract: An integrated process for removing sulfate from water sources, such as pretreated acid mine drainage (AMD). The multivalent cation (MVC) content of a sulfate stream is reduced by strong acid cation (SAC) ion exchange and sulfate is concentrated with a membrane system and separated as precipitate and overflow. Precipitation results from reaction of sulfate with MVC produced by regeneration of SAC with sodium chloride. The overflow is reacted with carbonate to precipitate MVC, generate sodium chloride and give a further overflow stream. This latter stream is concentrated to a level capable of being a regenerant for the SAC and when needed, used to regenerate the SAC and produce MVC for sulfate precipitation. The process minimizes the use of chemicals by treating, reconcentrating and recycling input species. Capital expenditures are minimized by precipitation of only side streams.
    Type: Application
    Filed: April 13, 2009
    Publication date: June 9, 2011
    Applicant: Siemens Water Technologies Corp.
    Inventors: Joseph Edward Zuback, Richard Woodling
  • Publication number: 20110132826
    Abstract: Embodiments of the present invention seek to provide a membrane distillation system having compact design and simplified connection system for fluid flow paths used in the system. According to one aspect, a membrane distillation system includes at least one membrane module and at least one like configured heat exchanger module, the modules being supported and connected to like configured manifold devices for providing fluid communication between said modules.
    Type: Application
    Filed: August 13, 2009
    Publication date: June 9, 2011
    Applicant: SIEMENS WATER TECHNOLOGIES CORP.
    Inventors: Heinz-Joachim Muller, Chan Mya Tun
  • Publication number: 20110129388
    Abstract: Chlorine dioxide generation systems and methods are disclosed. One or more reactants, such as sodium hypochlorite, may be electrolytically generated on-site for delivery to a reaction column. Low concentration reactants may be used to generate chlorine dioxide as part of a mixed oxy-chloro product stream containing free available chlorine. In at least one embodiment, an optical analyzer may be positioned along a reactant feed line to measure a concentration of reactant supplied to a reaction column. A controller may adjust a flow rate of the reactant in response to information provided by the optical analyzer. The controller may also perform pH control within the system. In some embodiments, the chlorine dioxide generator may be incorporated in an all-liquid water disinfection system.
    Type: Application
    Filed: July 27, 2009
    Publication date: June 2, 2011
    Applicant: SIEMENS WATER TECHNOLOGIES CORP.
    Inventors: Vince G. Alarid, Edward M. Martens, Bobby J. Owings, Glenn W. Holden