Because there are so many different kinds of chemical filtration, there is a wide variety of chemical filter varieties to accommodate them.
The term “chemical filter” is somewhat ambiguous; a chemical filter can be any tool that separates one substance from another. In the context of liquid filtration, the term could be assigned to industrial water filters, hydraulic filters, biodiesel filters and a wide variety of other liquid filters. Carbon filters are a prominent liquid filtration variety. They are among the more recognizable filtration systems because of their application in home water purification equipment.
Water filters are used to soften water and to remove chemicals such as chlorine and fluoride, though different water filters vary in terms of their filtering capability and capacity. For example, home filters are used primarily to improve the taste of water, while industrial water filters can be used to purify water to a high, precise standard; such filters can be necessary in laboratories or other specialized contexts.
In addition to water filters, there are many other kinds of liquid chemical filters. Gas filters, which can be found in automobiles and many other kinds of equipment that make use of combustion engines, are used for the filtration of fuel; this filtration prevents the build-up of sediment in engines. Coolant filtration, another kind of chemical filtration, is the process of filtering engine coolant. Hydraulic filters, which filter contaminants out of hydraulic fluid, are another example of important chemical filtration equipment.
Every liquid chemical filtration system is intended to remove unwanted particles from a flow of liquid; filtering prevents damage that could be caused by the exposure of such contaminants to people in the case of water filtration or to equipment in the case of industrial chemical filtration. The most effective chemical filters are those that combine effective filter media design with sound mechanical design.
Filter flow speed, for example, contributes to filtering effectiveness. The faster the flow of a liquid through a filter, the less thorough the filter can be. The opposite is true for slow-flow filters; the slower the flow of liquid through a filter, the level of filtration will be higher.