REGISTER now for FREE 
|
FREE patent keyword monitoring and additional FREE benefits. REGISTER now for FREE
|
|
|
Liquid Purification Or Separation > Processes > Liquid/liquid Solvent Or Colloidal Extraction Or Diffusing Or Passing Through Septum Selective As To Material Of A Component Of Liquid; Such Diffusing Or Passing Being Effected By Other Than Only An Ion Exchange Or Sorption Process > Including Cleaning Or Sterilizing Of Apparatus Including Cleaning Or Sterilizing Of ApparatusIncluding Cleaning Or Sterilizing Of Apparatus patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.10/25/07 - 20070246425 - Direct osmosis cleaning A method of cleaning a fouled RO membrane in a module for RO separation, the membrane having feed side and permeate side, the foulant accumulating at the feed side. The cleaning method comprises: feeding concentrated saline solution to the feed side of the RO membrane under the high gauge pressure ... 10/25/07 - 20070246424 - Process for producing ship ballast water, ship ballast water producing apparatus and use thereof A process for producing ship ballast water includes removing microorganisms from seawater by passing the seawater through a microorganism filtration membrane, and backwashing the microorganism filtration membrane to clean the microorganism filtration membrane. Microorganisms living in seawater can be removed in a manner which does not kill the microorganisms. ... 10/04/07 - 20070227973 - Reduction of backwash liquid waste A method of filtering solids from a liquid suspension comprising providing a pressure differential across the walls of permeable, hollow membranes (5) immersed in the liquid suspension contained in a vessel (8), the liquid suspension being applied to the outer surface of the porous hollow membrane (5) to induce and ... 09/27/07 - 20070221575 - Method and apparatus for concentrating a slurry The current invention provides improved methods and filter stacks for concentrating a slurry of titanium dioxide. The improved filter stack comprises a series of filter disks and diverter trays arranged in parallel. The present invention provides an improvement over prior art filter stacks by using a substantially complete weld to ... 09/13/07 - 20070210002 - Chemical and process for cleaning membranes A method for cleaning a microfiltration or ultrafiltration membrane comprising the step of contacting said membrane with a hydroxyl radical. The method is particularly suited for oxidation resistant membranes, such as Halar, with biological or organic fouling. The hydroxyl radicals for example are generated from an aqueous solution of transition ... 09/13/07 - 20070210001 - Method for membrane backwashing and backwashing apparatus A backwashing method incorporating a membrane filtration apparatus in which a ceramic filtration membrane including a substrate layer having a large number of filtration pores and a separating layer having filtration pores smaller than those of the substrate layer is accommodated in a casing. Air controlled to a pressure p1 ... 08/16/07 - 20070187326 - Membrane filter cleaning method and installation for implementing same The invention relates to a method of cleaning membrane filters comprising hollow fibres and an inner skin. The inventive method comprises the following steps consisting in: emptying the concentrate compartment in order to release the liquid to be filtered contained therein and the suspended matter, and, subsequently, performing a backwashing ... 08/09/07 - 20070181497 - Ro membrane cleaning method Direct-osmosis (DO) method for cleaning a semi-permeable membrane in a RO separation module, the membrane having a feed side with foulant located thereon, and an opposite permeate side. A normal RO separation process in the same module includes: feeding, under gauge pressure PGr, raw saline solution having osmotic pressure POr ... 08/09/07 - 20070181496 - Process and apparatus for purifying impure water using microfiltration or ultrafiltration in combination with reverse osmosis A method of purifying impure water contaminated with a filterable impurity and a dissolved impurity, such as sea-water, comprising the steps of: providing impure water to a primary microfiltration or ultrafiltration unit to remove the filterable impurity and produce impure filtered water contaminated with a dissolved impurity; providing the impure ... 06/21/07 - 20070138092 - Method and system for controlling duration of a backwash cycle of a filtration system A method of controlling duration of a backwash cycle of a filtration system commences with initiating pumping of a backwash fluid (12) through a filter (6) of the filtration system by way of a backwash pump (17). The flow rate of backwash fluid (12) is maintained to within 20% of ... 06/14/07 - 20070131614 - Low pressure filtration High flow, low-pressure ultrafiltration or microfiltration spiral wound membrane cartridges are used in filtration of liquid feedstocks having high suspended solids. Applications may utilize either vacuum or pumping for transmembrane drive pressure (TMP), and gas may optionally be bubbled up through the cartridges with certain feedstocks. Water permeate flux rates ... 05/10/07 - 20070102357 - Heat sanitization for reverse osmosis systems A heat sanitization system for a reverse osmosis system that utilizes the pure water produced by a reverse osmosis unit to sanitize the various conduits and components of the reverse osmosis system. The pure water from the reverse osmosis unit is collected in a storage tank during a tank fill ... 05/03/07 - 20070095754 - Efficient mbr operation in wastewater treatment In a sewage treatment facility that employs on the liquid side a basin or basins with membrane separators or MBRs for dewatering sludge, filtration is suspended or “relaxed” in short, rapid cycles, with air scour during relaxation, with the result of more efficient stripping of accumulated solids on the membranes, ... 04/12/07 - 20070080111 - Membrane filter for water treatment The invention relates to a membrane filter for water treatment, comprising a head piece including a permeate collecting chamber with a permeate outlet, and at least one fiber bundle made from capillary membranes, which are secured into the head piece with an end that is open towards the permeate collecting ... 04/05/07 - 20070075021 - Module cleaning method An aeration/backwash device (16) for use with a porous membrane filtration module (5) including one or more membranes (6) extending longitudinally between vertically spaced upper (7) and lower headers (8) into which the ends of the membranes are potted. The membranes (6) having a permeable wall which, in use, is ... 03/22/07 - 20070062870 - Microfiltration devices A method of treating a hollow fiber membrane microfiltration filter having an influent side and an effluent side to improve performance of the filter is disclosed. The method entails sealing imperfections in surfaces of the filter by flushing the filter with a liquid aqueous suspension of particulates. Filter cartridge devices ... 03/15/07 - 20070056905 - Continuous pressure decay test A continuous integrity test is performed on membranes in a membrane filtration system during the backwashing phase. The membrane pores are backwashed by applying a gas at a pressure below the bubble point to liquid permeate within the membrane lumens to displace the liquid permeate within the lumens through the ... 03/15/07 - 20070056904 - Cleaning of filtration membranes with peroxides The present invention relates to a process for cleaning a filtration membrane by adding one or more peroxide compounds to the influx. Preferably, one or more activators and/or reductants are added to the influx as well, in order to improve the performance of the peroxide compound. Optionally, one or more ... 03/08/07 - 20070051679 - Water filtration using immersed membranes A process and apparatus is described for filtering water with immersed membranes. In a batch process, permeate is withdrawn while the flow of feed is reduced or stopped at the end of a permeation cycle. The water level is reduced to a level where a portion of the membranes are ... 03/08/07 - 20070051678 - Method of removing silicon dioxide from waste liquid, method of cleaning membrane tube and method of processing waste water A method of removing silicon dioxide from a waste liquid is described. A solution containing fluoride ions is added into the waste liquid to form a reaction product. A method of cleaning a membrane tube for processing waste water is also described, wherein the membrane tube contains residues of waste ... 02/22/07 - 20070039883 - Water separation system Waste oily water is dewatered by expelling water through ceramic ultra filtration membranes of a cross-flow filter, located in a circulation ring, which is routinely cleaned in situ. The ring has two auxiliary reservoirs, with removable sight glasses, between which reservoirs the cleaning fluid is see-sawed during cleaning cycles, the ... 02/22/07 - 20070039882 - Integrated nanofiltration process to reduce the alcohol content of alcohol beverages The invention relates to a process for the reduction of the alcohol content of alcoholic beverages, namely wine, preserving the organoleptic characteristics of the original beverage. The process consists of the total or partial removal of the ethanol using nanofiltration membranes (6), which allow the passage of a mixture of ... 02/15/07 - 20070034570 - Biofilm reduction in pressure driven membrane-based water treatment systems A process for reducing and/or eliminating biofilm growth and removal thereof formed during operation of pressure-induced filtration systems such as reverse osmosis systems. The systems and methods are particularly suitable for use with pressure-driven membrane filtration, including microfiltration, ultrafiltration, nanofiltration and reverse osmosis. ... 02/15/07 - 20070034569 - Backwash and cleaning method A method of concentrating the solids of a liquid suspension by providing a pressure differential across the walls of permeable, hollow membranes (6) immersed in the liquid suspension (9). The liquid suspension (9) is applied to the outer surface of the porous hollow membranes (6) to induce and sustain filtration ... 01/11/07 - 20070007207 - Apparatus for withdrawing permeate using an immersed vertical skein of hollow fibre membranes A filtration device is provided for withdrawing permeate essentially continuously from a multicomponent aqueous substrate containing growing microorganisms in a reservoir. A vertical skein of fiber is scrubbed with coarse bubbles which emanate from a conversion baffle positioned under the skein. The substrate is aerated with fine bubbles in a ... 01/11/07 - 20070007206 - Apparatus for withdrawing permeate using an immersed vertical skein of hollow fibre membranes A process is described for withdrawing filtered permeate from a non-pressurized substrate in a reservoir through an assembly. The assembly has a plurality of hollow fiber filtering membranes disposed generally vertically between two solid bodies, an enclosure sealed to the upper solid body to define a cavity, a permeate port ... 01/11/07 - 20070007205 - Backwash A method of backwashing a membrane filtration module (4), said module (4) including one or more membranes (5) located in a feed-containing vessel (3), the membranes (5) having a permeable wall which is subjected to a filtration operation wherein feed containing contaminant matter is applied to one side of the ... 12/07/06 - 20060273007 - Submerged cross-flow filtration A membrane filtration module having a plurality of permeable, hollow membranes is disclosed. In use, a pressure differential is applied across the walls of the permeable, hollow membranes when immersed in a liquid suspension containing suspended solids. Some of the liquid suspension passes through the walls of the membranes to ... 11/30/06 - 20060266705 - Refreshing chemicals during membrane cleaning A method of cleaning filtering membranes with a cleaning chemical includes steps to partially or completely purge and refresh the cleaning chemical in an area at or near the membrane surface or in or near the membrane pores. A liquid cleaning chemical is provided in contact with a first side ... 11/23/06 - 20060261007 - Methods of cleaning membrane modules A method and apparatus for backwashing a membrane filtration system wherein permeate remaining present in the filtration system wherein permeate remaining present in the filtration system when the filtration process is stopped or suspended is used to provide liquid for backwashing the membrane pores during a backwashing process. ... 09/28/06 - 20060213834 - Method for cleaning separation membrane Pulse back washing for applying a back pressure from the filtrate side to the raw water side of the membrane is repeated plural times for recovering a TMP during usual main back washing applied by suspending membrane filtration, when the TMP is increased when tank water extracted out of a ... 09/21/06 - 20060207936 - Method for avoiding clogging of filtration membranes The invention relates to a method for avoiding, or reducing the clogging of filtration membranes, in particular, as used in effluent treatment such as of aqueous wastes, characterised in comprising the addition, to the effluent for filtration, of a natural organic adsorbent for trapping the molecules and particles which clog ... 09/07/06 - 20060196831 - Membrane filter for water treatment The invention relates to a membrane filter for water treatment, comprising a head piece including a permeate collecting chamber with a permeate outlet, and at least one fiber bundle made from capillary membranes, which are secured into the head piece with an end that is open towards the permeate collecting ... 07/20/06 - 20060157408 - Method for detecting filter clogging by using pressure information, apparatus for monitoring filter clogging and bed-side system A method is provided for detecting filter clogging which are able to keep track of the filter clogging with precision and in detail. At least one pressure selected from the group consisting of a pressure Pa in a blood inflow portion (32a), a pressure Pv in a blood outflow portion ... 06/22/06 - 20060131234 - Scouring method A method and apparatus for removing fouling materials from the surface of a plurality of porous membranes (9) arranged in a membrane module (4) by providing, from within the module, by means (10) other than gas passing through the pores of said membranes, gas bubbles in a uniform distribution relative ... 06/08/06 - 20060118487 - Membrane filtration process Various filtration processes using low amounts of aeration are disclosed. One process comprises a cycle of permeating and then backwashing, aerating, partially draining the tank and refilling the tank. Another process comprises steps of (a) permeating and withdrawing retentate; (b) after (a), backwashing; and (c) during (a), providing gentle aeration. ... 05/04/06 - 20060091075 - Water filtration using immersed membranes A process for operating filtering membranes submerged in a tank involves, in one aspect, periodically deconcentrating the tank by partially emptying and refilling the tank with fresh water. The emptying and refilling may be performed generally simultaneously or sequentially. In another embodiment, the membrane modules are arranged in a series ... 05/04/06 - 20060091074 - Membrane filtration device and process An element for use in ultrafiltration or microfiltration of potable water has a large number of small diameter hollow fibre membranes attached between two headers. Side plates attached to the sides of the headers define vertical flow channels containing the membranes. The elements may be placed side by side and ... 03/30/06 - 20060065596 - Membrane filter cleansing process Immersed hollow-fiber membrane filtration systems sometimes encounter process problems as a result of solids accumulation in and around the hollow fibers. The solids can accumulate to the point where they begin to dewater and form a mud like substance known as sludge. In some embodiments of the invention there is ... 03/23/06 - 20060060529 - Chemical cleaning backwash for normally immersed membranes A method of chemically cleaning normally immersed suction driven filtering membranes involves backwashing a chemical cleaner through the membranes while the tank is empty in repeated pulses in which the chemical cleaner is pumped to the membranes separated by waiting periods in which chemical cleaner is not pumped to the ... 02/09/06 - 20060027499 - Carbon nanotube filter Monolithic, macroscopic, nanoporous nanotube filters are fabricated having radially aligned carbon nanotube walls. The freestanding filters have diameters and lengths up to several centimeters. A single-step filtering process was demonstrated in two important settings: the elimination of multiple components of heavy hydrocarbons from petroleum, a crucial step in post-distillation of ... 01/12/06 - 20060006112 - Cyclic aeration system for submerged membrane modules A process for supplying bubbles to a membrane module and cleaning an aerator producing the bubbles includes, in repeated cycles, steps of producing bubbles from an aerator and reducing pressure in the aerator such that water in the tank enters the aerator. ... 01/05/06 - 20060000775 - Scouring method A method and apparatus for removing fouling materials from the surface of a plurality of porous membranes (9) arranged in a membrane module (4) by providing, from within the module, by means (10) other than gas passing through the pores of said membranes, gas bubbles in a uniform distribution relative ... 01/05/06 - 20060000774 - Backwash method A filtration arrangement including one or more membrane modules (5) positioned vertically within a feed tank (6), each membrane module (5) having one or more membranes positioned therein. An aeration hood (10) having an upper wall (11) and one or more downwardly extending side walls (12, 13) is configured to ... 11/24/05 - 20050258098 - Method for regulating a membrane filtering installation The invention concerns a method for avoiding irreversible membrane clogging while maximising productivity, whatever the quality of the fluid at the installation intake. It consists in automatically controlling the installation operating parameters by performances induced by the quality of the fluid to be treated, based on predictions concerning the evolution ... 10/20/05 - 20050230312 - Configurations and methods for reduction of microbial growth in reverse osmosis devices Microbial growth in reverse osmosis devices is reduced by incorporating an electrode into an interconnector that fluidly couples an upstream membrane unit to a downstream membrane unit. Preferably, the electrode delivers an electric field or pulse to the feed fluid at a strength effective to reduce microbial growth in the ... 10/20/05 - 20050230311 - Crossflow-filtration method for beverages The invention relates to a crossflow-filtration method for beverages, in particular beer, which comprises the following steps: a) the feed liquid is introduced into a filter module by means of a tangential flow through a filter membrane (6) in a first direction, whereby the filtrate flow on the filtrate side ... 10/13/05 - 20050224411 - Method of cleaning membranes The present invention relates a method for cleaning polymeric microfiltration membranes and membrane units, and to compositions useful in such methods. The compositions include at least one soluble sulfite reducing agent and a compatible solvent. ... 10/06/05 - 20050218073 - Method of cleaning membranes The present invention relates a method for cleaning polymeric microfiltration membranes and membrane units, and to compositions useful in such methods. ... 09/08/05 - 20050194315 - Membrane batch filtration process A membrane batch filtration process has a step of reducing the water level in the tank by permeation prior to emptying the tank to reduce the volume of water drained after each batch. Permeation may continue even after a portion of the membranes is exposed to air to further lower ... 08/25/05 - 20050184008 - Methods for treating membranes and separation facilities and membrane treatment composition A method for treating a separation facility is provided according to the invention. The separation facility includes a plurality of membranes for providing separation of a feed product. The method includes steps of providing liquid flow through a plurality of membranes; treating the plurality of membranes with a multiple phase ... 08/18/05 - 20050178729 - Maintenance cleaning for membranes A method of cleaning ultrafiltration or microfiltration membranes reduces the rate of decline in the permeability of the membranes so that intensive recovery cleaning is required less frequently. In one aspect, cleaning events using a chemical cleaner are started before the membranes foul significantly and are repeated between 1 and ... 08/18/05 - 20050178728 - Apparatus for withdrawing permeate using an immersed vertical skein of hollow fibre membranes A process is described for withdrawing filtered permeate from a non-pressurized substrate in a reservoir through an assembly. The assembly has a plurality of hollow fiber filtering membranes disposed generally vertically between two solid bodies, an enclosure sealed to the upper solid body to define a cavity, a permeate port ... 08/11/05 - 20050173342 - Apparatus for withdrawing permeate using an immersed vertical skein of hollow fibre membranes A membrane module has a first solid body having a plurality of passages extending through it and a second solid body. Hollow fiber membranes extend between the solid bodies. A permeate manifold communicates with the lumens of the membranes through their ends. The membranes are arranged into a plurality of ... 08/11/05 - 20050173341 - Blended polymer media for treating aqueous fluids Blended polymer membranes for treating aqueous fluids, filters including the membranes, and methods of treating aqueous fluids such as source water to remove contaminants to a desired level of purification by directing the water through the membranes, are disclosed. ... 07/14/05 - 20050150831 - Method for cleaning hollow tubing and fibers Hollow porous fibers containing adhered contaminants are cleaned to remove the contaminants by backflushing a liquid to fill the pores, and adding a flow of gas so as to form a two-phase mixture of gas and bubbles of liquid that can scrub the fibers, loosening the contaminants and allowing them ... 07/07/05 - 20050145567 - Crossflow pressure liquid filtration with ultrasonic enhancement Methods and apparatus for increasing the duration of uninterrupted filtering flow by using crossflow filtration and ultrasonic energy with in difficult to filter process liquids (e.g. of the kind having (1) a carrier liquid, (2) coalescing solids particles which tend to adhere and bridge filter element gaps sized substantially larger ... 06/09/05 - 20050121389 - Immersed membrane filtration system and overflow process Modules of ultrafiltration or microfiltration membranes are arranged in a tank open to the atmosphere to substantially cover the cross sectional area of the tank. A filtration cycle has permeation steps and deconcentration steps. During permeation, supply of feed substantially equals feed removed and little if any aeration is used. ... 06/09/05 - 20050121388 - Production of water for injection using reverse osmosis A method and system for providing Water for Injection using reverse osmosis. Water for Injection can be produced by reverse osmosis and the reverse osmosis membrane can be kept in a constantly self-sanitizing condition. One way of obtaining a constantly self-sanitizing condition is to maintain the reverse osmosis membrane at ... 06/02/05 - 20050115900 - Cyclic aeration system for submerged membrane modules An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate or air flow and a lower rate of air flow in repeated cycles. In an embodiment, the air blower, valves and ... 06/02/05 - 20050115899 - Membrane bioreactor having single header membrane module A filtration apparatus for filtering liquid has a filtration cell having generally vertical front and rear panels spaced apart to define a cell length, and generally vertical side panels extending between the front and rear panels and spaced apart to define a cell width. A plurality of header segments are ... 06/02/05 - 20050115898 - Method and device for the removal of partially protein bound substances A method and a device to increase the efficiency of dialysis for the removal from blood of substances that are more or less tightly bound to carriers such as albumin. According to the invention this is accomplished by a simultaneous significant increase of the flow rate of the dialysis fluid ... ### FreshPatents.com Support |