Abstract: Compositions and methods for removing surface deposits in situ from filtration media contained in water filtration beds may include a solid acid component, a solid oxidizer, low temperature activator, a dessicant, an anti-caking agent, a pH indicator, a corrosion inhibitor, a surfactant, a chelating agent, and/or a defoaming agent. A granular acid component may include sodium bisulfate, and a granular oxidizing component may include at least one of sodium percarbonate, sodium perborate, potassium percarbonate, and potassium perborate. Compositions may be applied to top surface and/or subsurface regions of a filter bed, in wetted or dry form. A kit includes a container with dry composition and instructions or indicia for cleaning water filtration media using the composition.

Abstract: A stabilized mixed oxidant solution may be produced by flowing a starting solution (e.g., salt brine, hypochlorous acid, and/or sodium hypochlorite) through a flow-through electrochemical module including first and second passages separated by an ion permeable membrane while electric power is applied between an anode and cathode in electrical communication with the first and second passages, respectively. An initially acidic anolyte solution received from the first (anode) passage is stabilized by elevating pH to yield a stabilized mixed oxidant solution. Methods of using the mixed oxidant solution are further provided.

Abstract: A stabilized mixed oxidant solution may be produced by flowing a starting solution (e.g., salt brine, hypochlorous acid, and/or sodium hypochlorite) through a flow-through electrochemical module including first and second passages separated by an ion permeable membrane while electric power is applied between an anode and cathode in electrical communication with the first and second passages, respectively. An initially acidic anolyte solution received from the first (anode) passage is stabilized by elevating pH to yield a stabilized mixed oxidant solution. Methods of using the mixed oxidant solution are further provided.

Abstract: Compositions and methods for removing surface deposits in situ from filtration media contained in water filtration beds may include a solid acid component, a solid oxidizer, low temperature activator, a dessicant, an anti-caking agent, a pH indicator, a corrosion inhibitor, a surfactant, a chelating agent, and/or a defoaming agent. A granular acid component may include sodium bisulfate, and a granular oxidizing component may include at least one of sodium percarbonate, sodium perborate, potassium percarbonate, and potassium perborate. Compositions may be applied to top surface and/or subsurface regions of a filter bed, in wetted or dry form. A kit includes a container with dry composition and instructions or indicia for cleaning water filtration media using the composition.

Abstract: A stabilized mixed oxidant solution may be produced by flowing a starting solution (e.g., salt brine, hypochlorous acid, and/or sodium hypochlorite) through a flow-through electrochemical module including first and second passages separated by an ion permeable membrane while electric power is applied between an anode and cathode in electrical communication with the first and second passages, respectively. An initially acidic anolyte solution received from the first (anode) passage is stabilized by elevating pH to yield a stabilized mixed oxidant solution. Methods of using the mixed oxidant solution are further provided.