Specialities - Filtration
filtration media is the method of filtering water through the use of sand, granite or any kind of porous material in order to make it potable for drinking. This type of filtering is very important, especially in places where flooding is a constant occurrence as contaminants can easily pollute the water making it hazardous for drinking.
Using filtration media can effectively remove all forms of contaminants and can even purify flood waters, making it suitable for human use. There are many types of filtration media used to filter water, especially flood waters in order to make it safe and potable. These are some of the most-used materials used for filtering water. .
The use of sand is one of the most popular materials in filtration. The minute sand particles act like a sieve to filter out contaminants ranging from dust particles to small microbes and bacteria. Normally, filtration units use a combination of gravel and send to filter the water thoroughly.
This works by allowing to water to pass through a multi-stage filter, combining gravel, coarse and fine sand to better remove contaminants, particles and pollutants. In filtering storm or flood water, Phosphorus sand is commonly used to effectively filter and remove contaminants and solids.
This type of material is effective in filtering particles in water through the process called "Adsorption." This process is different from absorption, which is the ability of a material of absorb liquid. Adsorption is the process where molecules cling to a surface of a solid and form thin film. The use of activated carbon in any filtration equipment is almost universal because of its adsorption qualities.
There are many more materials other than gravel, sand and carbon that are used for filtration purposes. Materials such as wool, ceramic chips and different kinds of sponges are also popular. However, these materials are used generally for small-scale filtration like in home filters. It is important though to clean these filtration materials regularly, especially sponges as bacteria and microorganisms can thrive in it.
Uses of Filtration Media
Most municipalities treat their water supply through various filtering methods and one of the most used is the rapid-sand filtration. This is done by allowing untreated water to pass through multiple filtering stages in order to remove solid particles and bacteria. Materials used for these filters range from sand, gravel and ceramic chips. After water is filtered into these stages, it is then treated with chemicals to kill off bacteria and other microorganisms, which can be hazardous to human health.
Importance of Filtration
Drinking untreated and contaminated water can be extremely dangerous to one's health because of the presence of dangerous microorganisms and other pollutants. Through simple filtration methods, the threat of poisonings can be eliminated and ingesting harmful pollutants and bacteria be avoided. Municipalities have already included multiple stages of filtration to ensure safety of drinking water. However, in countries where water treatment is not rigorously implemented, small filters installed in homes can be extremely helpful to ensure the well-being of its residents.