초록

The invention relates to a method and apparatus for filtering or purifying water.

대표청구항 ▼

The invention claimed is: 1. A recycling apparatus for recycling wash solution from a power washer: a holding tank constructed and arranged for holding filtered wash solution and having at least one opening to the environment to allow air to freely transfer between the holding tank the environment;

The invention claimed is: 1. A recycling apparatus for recycling wash solution from a power washer: a holding tank constructed and arranged for holding filtered wash solution and having at least one opening to the environment to allow air to freely transfer between the holding tank the environment; a first filter assembly in gravity feed relation with the holding tank, said first filter assembly having a first filter sheet; a second filter assembly in gravity feed relation with holding tank, said third filter assembly having a second filter sheet having a filtration size of 10 microns or less, wherein said first and second filter assemblies are constructed and arranged such that during operation a first filtered wash solution from the first filter assembly filters through the second filter assembly to form a recycled wash solution and drops into the holding tank a second distance of from about 1 to about 30 inches before contacting recycled wash solution in the holding tank; and a power washer in communication with the recycled wash solution in the holding tank; and screen structure constructed and arranged for collecting wash solution sprayed from the power washer during operation and transferring the wash solution to the first filter assembly, wherein at least one of the filter sheets comprises an inner flat filter material impregnated with an active material that removes an undesired material from water filtered therethrough, the inner flat material being encased by two outer flat filter materials that are sealed along a length of the flat filter material. 2. A recycling apparatus according to claim 1, wherein said inner filter material is a larger size than said outer flat filter materials. 3. A recycling apparatus according to claim 1, wherein said inner filter material has a size of from about 1 to about 10 microns and said outer filter materials have a size of about 1 micron or less. 4. A recycling apparatus according to claim 1, wherein said inner filter material has a size of from about 1 to about 5 microns and said outer filter materials have a size of about 0.5 to about 0.01 micron. 5. A recycling apparatus according to claim 1, wherein the active material is selected from the group consisting of activated charcoal, lignite, laterite and positive charged polymers. 6. A recycling apparatus according to claim 5, wherein the active material is present in an amount from about 1 to about 90% by weight. 7. A recycling apparatus according to claim 5, wherein the active material is present in an amount from about 10 to about 50% by weight.