Patent application number | Description | Published |
20110056522 | METHOD OF CLEANING MEMBRANES - Methods for cleaning polymeric microfiltration or ultrafiltration membranes. The membrane may be contacted with a first cleaning solution including at least one oxidising agent. A second cleaning solution including at least one reducing agent may then be introduced to the membrane and first cleaning solution. The oxidising and reducing agents may undergo a neutralisation reaction to form an oxidation-neutral mixed cleaning solution. The membrane may be simultaneously cleaned during the neutralisation reaction. | 03-10-2011 |
20110100907 | MEMBRANE CLEANING WITH PULSED ARILIFT PUMP - 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 ( | 05-05-2011 |
20110139715 | Membrane System Backwash Energy Efficiency - 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. | 06-16-2011 |
20110192783 | Potting Method - A membrane module includes at least one hollow fibre membrane; a first resin layer formed around an end of the at least one hollow fibre membrane; and a second resin layer chemically bound to the first resin layer, wherein the second resin layer is of greater flexibility than the first resin layer. | 08-11-2011 |
20120061333 | MEMBRANE CLEANING WITH PULSED AIRLIFT PUMP - 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 ( | 03-15-2012 |
20120187044 | 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. | 07-26-2012 |
20120285885 | MEMBRANE CLEANING WITH PULSED GAS SLUGS - Aspects and embodiments of the present application are direction to systems and methods for treating fluids and to systems and methods for cleaning membrane modules used in the treatment of fluids. Disclosed herein is a membrane filtration system and a method of operating same. The membrane filtration system comprises a plurality of membrane modules positioned in a feed tank, at least one of the membrane modules having a gas slug generator positioned below a lower header thereof, the gas slug generator configured and arranged to deliver a gas slug along surfaces of membranes within the at least one of the membrane modules. The membrane filtration system may further comprise a global aeration system configured to operate independently from an aeration system providing a gas to the gas slug generator. The global aeration system may be configured and arranged to induce a global circulatory flow of fluid throughout the feed tank. | 11-15-2012 |
20130153496 | MEMBRANE CLEANING WITH PULSED AIRLIFT PUMP - 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 ( | 06-20-2013 |
20130264251 | MEMBRANE MODULE PROTECTION - In accordance with aspects and embodiments, a filtration system is provided comprising a membrane module comprising an upper header and a lower header, a plurality of hollow fiber membranes having an upper end potted in the upper header and a lower end potted in the lower head, a cage at least partially surrounding the plurality of hollow fiber membranes, and a screen in contact with and surrounding the cage, the filtration system further comprising an aeration cap coupled to the lower header of the membrane module. The screen may protect the hollow fiber membranes from damage from coarse contaminants contained in the feed liquid, may improve module integrity, and may improve the efficiency of the filtration system. | 10-10-2013 |
20140083940 | MEMBRANE CLEANING WITH PULSED AIRLIFT PUMP - 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 ( | 03-27-2014 |
20140158618 | MEMBRANE CLEANING WITH PULSED AIRLIFT PUMP - 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 ( | 06-12-2014 |