Water Purification & Filtration Dictionary

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An alphabetical listing of General terms and items.

Operating Pressure   Dico Tools
The manufacture's specific range of pressure expressed in pounds per square inch (psi) within which a water processing device or water system is designed to function. A range of 30 to 100 psi is often indicated. Also called working pressure.


Operating Temperature   Dico Tools
The manufacturer's recommended feed water or inlet water temperature for a water treatment system.


Orfice   Dico Tools
An opening, such as a hole or vent in something.


Organic   Dico Tools
Having the characteristics of or being derived from a living organism, plant and animal. Containing carbon (although a few very simple carbon compounds such as carbon oxides, the carbides, carbon disulfides and metallic carbonyls and carbonates are considered inorganic).


Organic   Dico Tools
Having the characteristics of or being derived from a living organism, plant and animal. Containing carbon (although a few very simple carbon compounds such as carbon oxides, the carbides, carbon disulfides and metallic carbonyls and carbonates are considered inorganic).


Osmosis   Dico Tools
The natural tendency for water to spontaneously pass through a semipermeable membrane separating two solutions of different concentrations (strength). The water will naturally pass from the weaker (less concentrated) solution containing fewer particles of dissolved substance to the stronger (more concentrated) solution containing more particles of a dissolved substance. Thus natural osmosis causes the stronger solution to become more diluted and tends to equalize the strength of the solution on both sides of the membrane.


Osmotic Pressure   Dico Tools
The pressure and potential energy difference which exists between two solutions on either side of a semipermeable membrane because of the tendency of water to flow in osmosis.


Oxidizing Agent   Dico Tools
A chemical substance that gains electron (is reduced) and brings about the oxidation of other substances in chemical oxidation and reduction (redox) reactions.


Ozonation   Dico Tools
The process of feeding ozone into a water supply for the purpose of decolorization, deodorization, disinfectant or oxidation.


Ozone (03)   Dico Tools
A very strong oxidizing agent which is unstable and must be generated on site. Ozone is a highly reactive form of oxygen and can be produced by sending a high voltage electrical discharge through air or oxygen (such as occurs in a lightening storm). Ozone can also be produced by some types of ultra violet lamps. Ozone is an excellent oxidizing agent and bactericide.



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