Water Purification & Filtration Dictionary
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An alphabetical listing of General terms and items. |
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A method of cross-flow filtration (similar to reverse osmosis but using lower pressure) which uses a membrane to separate small colloids and large molecules from water and other liquids.
Highly treated water that is deionized and mineral free with high resistivity and no organics; it is usually used in the semiconductor and pharmaceutical industries. Ultrapure water in NOT considered biologically pure (potable) or sterile.
Pertaining to ultraviolet light.
Radiation (light) having a wavelength shorter than 3900 angstroms, the wavelengths of visible light, and longer than 100 angstroms, the wavelength of x-rays.
The area where the water is irradiated with ultraviolet rays.
The amount of ultraviolet rays required to inactivate certain microorganisms.
The amount of disinfectant ultraviolet rays delivered to the organisms in the water being disinfected. Dosage is a combination of UV intensity times the contact time and is measured in watt-seconds per square centimeter.
A flow in which the feet per second velocity rates and directions are the same from point to point along the conduit.
A pattern of water flow in which a solution (water or regenerant usually) enters at the bottom of the vessel or column and flows out at the top of the vessel or column during any phase of the treatment unit's operating cycle.
The product water consumer.
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