Water filtration is important in industries as well as at home. The water that comes to your home may not always be perfect for drinking and bathing purposes. In such cases, it is important to filter water before using it. Industries have a more stringent water purity requirement. Therefore, the systems used there are costlier than for home usage. Micron filters, no matter the size, are capable of removing pathogens that cause dysentery, diarrhea and cholera.
About Micron Filters
A micron filter is a device that uses filter papers with pore size in the range of microns. With such small pore sizes, these filters are a perfect choice for both industrial and home use. Because of their efficiency and their relative ease in cleaning, most filter devices manufactured today use micron filters. The pore size of these filters can range from 5 micron to 1 micron. Depending on the size of the pores, the price varies.
Different Types of Micron Filters
Depending on the material and type of filter, micron water filters are classified as spun sediment filters, string wound sediment filters and pleated sediment filters. These micron filters are rated on their efficiency with the use of a micron rating system, which basically measures the pore sizes. Such filters can be rated on an absolute or nominal scale. Absolute scale signifies that 99 percent of the openings are of that size while the nominal suggests that only 80 percent maximum conform to the size.
Spun Sediment Filter
Spun sediment filter consists of fine threads of polypropylene woven together in such a manner that the outer layers have a lower micron rating while the inner layers have progressively higher ratings. Therefore, the micron rating of a spun filter is always quoted in terms of nominal micron rating. One advantage that this filter has over other types is that as water passes through the filter, larger particles and sediments settle outside the outer layers while only smaller sized materials stay back within the filter.
String Wound Filter
String wound filter is very similar to string wound filter in terms of construction. It is made from polypropylene. However, the purpose of string wound filters is to hold back maximum amount of dirt and sand particles. It is for this reason that string wound filters are used to filter water wells. Obviously, these filters get only a nominal rating.
Pleated Sediment Filter
Pleated sediment filters consist of only one layer that is made from a variety of materials such as cellulose and polyesters. In fact, this type of filter is commonly used in many domestic filter systems today. The price of each filter paper depends directly on its thickness and material as well as its micron rating.
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