Method of cleaning membranes
AssigneeU. S. Filter Wastewater Group, Inc.
InventorsPaul Martin Gallagher, Tom Rainier, Aaron J. Balczewski, Daniel A. Cargnel
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Abstract
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.
Claims36
A method of cleaning a membrane contaminated with a contaminant, the method comprising the step of:
- contacting the contaminant with a composition comprising a sulfite reducing agent and a solvent, wherein the sulfite reducing agent is soluble in the solvent, and wherein the solvent is compatible with the membrane.
A composition for cleaning a membrane contaminated with a contaminant, the composition comprising a sulfite reducing agent and a solvent, wherein the sulfite reducing agent is soluble in the solvent, and wherein the solvent is compatible with the membrane.
A method for cleaning a membrane, the method comprising the step of:
- cleaning the membrane using a composition comprising a sulfite reducing agent and a solvent, wherein the sulfite reducing agent is soluble in the solvent, and wherein the solvent is compatible with the membrane.
A membrane, wherein the membrane is capable of cleaning by a composition comprising a sulfite reducing agent and a solvent, wherein the sulfite reducing agent is soluble in the solvent, and wherein the solvent is compatible with the membrane.
A membrane, wherein the membrane is contaminated with a contaminant comprising a metal oxide or a metal hydroxide, and wherein the membrane is capable of cleaning by a composition comprising a sulfite reducing agent and a solvent, wherein the sulfite reducing agent is soluble in the solvent, and wherein the solvent is compatible with the membrane.
Dependencies are inferred from the claim text.