Abstract: A method of treating aqueous, preferably concentrated, waste streams with a unique combination of steps in a way that is easily scalable and able to be used with batch or continuous flows. The method comprises at least the following steps: Adding at least one precipitating agent to the waste water to produce precipitated solids; and removing the precipitated solids from the waste water using a forward flushable membrane to remove the precipitate solids.

Abstract: A method of treating aqueous, preferably concentrated, waste streams with a unique combination of steps in a way that is easily scalable and able to be used with batch or continuous flows. The method comprises at least the following steps: Adding at least one precipitating agent to the waste water to produce precipitated solids; and removing the precipitated solids from the waste water using a forward flushable membrane to remove the precipitate solids.

Abstract: The current invention relates to an apparatus for the production of stable oxy-chloro acid while monitoring the efficacy of the resin bed. The invention allows for simple ion exchange while modifying the pH to allow the chlorous acid to be in a stable form so that it does not rapidly degrading into chlorine dioxide and can be used as an effective biocide and cleaning composition. The apparatus also provides for an uninterrupted production of chlorous acid, which allows for the use of chlorous acid to be used in batch or continuous cleaning treatments.

Abstract: A method of cleaning a fouled or a scaled RO or NF membrane surface with a solution containing one or more thermo-responsive polymers is disclosed. More specifically, the method comprises: treating the membrane surface in a membrane separation system with a solution containing one or more TRP, wherein said TRP is soluble in said solution and at least an effective amount of said TRP diffuses into a foulant layer on said membrane surface; making insoluble said TRP diffused into said foulant layer; optionally, rinsing the membrane.

Abstract: A method of cleaning a fouled or a scaled RO or NF membrane surface with a solution containing one or more thermo-responsive polymers is disclosed. More specifically, the method comprises: treating the membrane surface in a membrane separation system with a solution containing one or more TRP, wherein said TRP is soluble in said solution and at least an effective amount of said TRP diffuses into a foulant layer on said membrane surface; making insoluble said TRP diffused into said foulant layer; optionally, rinsing the membrane.

Abstract: This invention is a method for cleaning and maintaining a membrane filtration element/system used in a continuous feed stream wherein an oxidizing agent that does not cause membrane damage is used as a cleaning agent. The cleaning agent used to maintain and clean the membrane is a biocide that is preferably an oxy-chloro species and most preferably a stable chlorous acid.

Abstract: The invention is a method of producing stable chlorous acid for use as a cleaning agent and biocidal composition. The method passes a salt of an oxy-chloro acid over a resin to allow for an ion exchange that produced the oxy-chloro acid. The invention allows for the production of a stable chlorous acid that can be used as a biocidal agent and a cleaning agent without the effect on many surfaces or membranes as normal oxy-chloro compositions.

Abstract: The current invention relates to an apparatus for the production of stable oxy-chloro acid. The invention allows for simple ion exchange while modifying the pH to allow the chlorous acid to be in a stable form so that it does not rapidly degrading into chlorine dioxide and can be used as an effective biocide and cleaning composition. The apparatus also provides for an uninterrupted production of chlorous acid, which allows for the use of chlorous acid to be used in batch or continuous cleaning treatments.

Abstract: Methods and systems for monitoring and controlling the cleaning of membrane separation systems or processes are provided. The present invention uses detectable amounts of one or more inert fluorescent tracers added to a membrane cleaning process stream to evaluate and control the removal of contaminants and impurities during cleaning. The methods and systems of the present invention can be used in a variety of different industrial applications including raw water processing and waste water processing.

Abstract: Methods and systems for monitoring and/or controlling the cleaning of membrane separation systems or processes are provided. The present invention utilizes measurable amounts of inert fluorescent tracer(s) added to a membrane cleaning process stream to evaluate and/or control the removal of contaminants and/or impurities during cleaning. The methods and systems of the present invention can be utilized in a variety of different industrial applications including raw water processing and waste water processing.

Abstract: Methods and systems for monitoring and/or controlling membrane separation systems or processes are provided. The present invention utilizes measurable amounts of inert fluorescent tracers and tagged fluorescent agents added to a feed stream to evaluate and/or control one or more parameters specific to membrane separation such that performance thereof can be optimized. The methods and systems of the present invention can be utilized in a variety of different industrial applications including raw water processing and waste water processing.

Abstract: Methods and systems for monitoring and/or controlling membrane separation systems or processes are provided. The present invention utilizes measurable amounts of inert fluorescent tracer(s) added to a feed stream to evaluate and/or control the purification of such feed stream during membrane separation. The methods and systems of the present invention can be utilized in a variety of different industrial applications including raw water processing and waste water processing.

Abstract: Methods and systems for monitoring and/or controlling membrane separation systems or processes are provided. The present invention utilizes measurable amounts of inert fluorescent tracer(s) added to a feed stream to evaluate and/or control the purification of such feed stream during membrane separation. The methods and systems of the present invention can be utilized in a variety of different industrial applications including raw water processing and waste water processing.

Abstract: Methods for monitoring and controlling biofouling in membrane separation systems are provided. The present invention uses measurable amounts of fluorogenic agent(s) added to a feed stream to monitor and control the level of microbial growth during membrane separation and, thus, the purification of such feed stream during membrane separation.

Abstract: Methods and systems for monitoring and controlling membrane separation systems are provided. The present invention uses measurable amounts of one or more inert fluorescent tracers added to a feed stream to evaluate and/or control the unit operation of processing such feed stream during membrane separation. The methods and systems of the present invention can be used in a variety of different industrial applications including raw water processing and waste water processing.

Abstract: Methods and systems for monitoring and controlling the cleaning of membrane separation systems or processes are provided. The present invention uses detectable amounts of one or more inert fluorescent tracers added to a membrane cleaning process stream to evaluate and control the removal of contaminants and impurities during cleaning. The methods and systems of the present invention can be used in a variety of different industrial applications including raw water processing and waste water processing.

Abstract: Methods and systems for monitoring and/or controlling membrane separation systems or processes are provided. The present invention uses measurable amounts of inert fluorescent tracers and tagged fluorescent agents added to a feed stream to evaluate and/or control one or more parameters specific to membrane separation such that performance thereof can be optimized. The methods and systems of the present invention can be used in a variety of different industrial applications including raw water processing and waste water processing.

Abstract: Methods for monitoring and/or controlling biofouling in membrane separation systems are provided. The present invention utilizes measurable amounts of fluorogenic agent(s) added to a feed stream to monitor and/or control the level of microbial growth during membrane separation and, thus, the purification of such feed stream during membrane separation.

Abstract: Methods and systems for monitoring and/or controlling membrane separation systems or processes are provided. The present invention utilizes measurable amounts of inert fluorescent tracers and tagged fluorescent agents added to a feed stream to evaluate and/or control one or more parameters specific to membrane separation such that performance thereof can be optimized. The methods and systems of the present invention can be utilized in a variety of different industrial applications including raw water processing and waste water processing.

Abstract: Methods and systems for monitoring and/or controlling membrane separation systems or processes are provided. The present invention utilizes measurable amounts of inert fluorescent tracer(s) added to a feed stream to evaluate and/or control the purification of such feed stream during membrane separation. The methods and systems of the present invention can be utilized in a variety of different industrial applications including raw water processing and waste water processing.