| Patent application number | Description | Published |
|---|
| 20080203017 | Chemical Clean For Membrane Filter - A method of cleaning a porous polymeric membrane having a feed side and a permeate side including the steps of introducing a fluid containing a cleaning agent to the permeate side of a membrane allowing the cleaning agent to contact the permeate side of the membrane for a predetermined time, and contact the pores of the membrane, or introducing a fluid containing a cleaning agent to the feed side of a membrane; applying a transmembrane pressure to force the fluid containing the cleaning agent from the feed side to the permeate side of the membrane; allowing the cleaning agent to contact the permeate side of the membrane for a predetermined time, and contact the pores of the membrane. Preferably a concentration gradient between the feed side fluid and the lumen side fluid containing the cleaning agent causes cleaning agent to diffuse into the feed side fluid. Pressure may be applied to the fluid containing a cleaning agent to dislodge, where present, dissolved and undissolved solid from the membrane pores. The pressure may be applied in a pulsed fashion, and can be by way of compressed air at a pressure not more than the membrane's bubble point. The methods of the present invention may be preceded by, or followed with a backwash. | 08-28-2008 |
| 20080210623 | Square Mbr Manifold System - A membrane module ( | 09-04-2008 |
| 20080314829 | Dynamic Control of Membrane Bioreactor System - A method of controlling the operating parameters of a membrane bioreactor system, the method including the steps of determining a control algorithm based on the relationship between the value of a parameter of the influent provided to the membrane bioreactor system and an optimal performance measurement parameter of the system and controlling one or more operating parameters of the membrane bioreactor system using the determined control algorithm. | 12-25-2008 |
| 20090001018 | Operating Strategies in Filtration Processes - A method of operating a membrane filtration system having a number of repeated operation cycles, the method including the step of varying the values of one or more operating parameters of the system associated with a particular operation cycle between and/or during one or more repetitions of the operation cycle. Membrane filtration systems operating in accordance with the method are also disclosed. | 01-01-2009 |
| 20090026139 | SUBMERGED CROSS-FLOW FILTRATION - A membrane filtration module ( | 01-29-2009 |
| 20090127212 | Chemical Cleaning Agent And Process For Cleaning Filtration Membranes - Methods for cleaning a membrane, such a porous polymeric ultrafiltration or microfĂltration membranes (eg PVdF or Halar), comprising contacting the membrane with an aqueous solution comprising a monopersulfate anion. Buffers, chelating agents, catalysts, and combinations thereof can be added. The monopersulfate anion is most advantageously in the form of a potassium triple salt Of H | 05-21-2009 |
| 20090255873 | LOW PRESSURE BACKWASH - A method of backwashing a membrane filtration system comprising at least one permeable hollow membrane, the method comprising the step of applying a low-pressure gas to the permeate remaining present in the system when the filtration process is stopped or suspended to provide liquid for backwashing the pores of the membrane during a backwashing process. | 10-15-2009 |
| 20100012585 | MEMBRANE FILTRATION PROCESS AND DESIGN - A membrane filtration system ( | 01-21-2010 |
| 20100051545 | MEMBRANE MODULE PROTECTION - A filtration system for removing fine solids from a liquid suspension comprising a vessel for containing the liquid suspension, one or more permeable, membranes ( | 03-04-2010 |
| 20100133177 | Biological Phosphorus Removal - A process for treating waste water to remove phosphorous and nitrogen in a treatment system including an anaerobic zone ( | 06-03-2010 |
| 20100170847 | MEMBRANE CLEANING USING AN AIRLIFT PUMP - A membrane module ( | 07-08-2010 |
| 20100200503 | CLEANING METHOD FOR SIMPLE FILTRATION SYSTEMS - A method of cleaning a permeable, hollow membrane ( | 08-12-2010 |
