With so many different water filtration methods available to industrial businesses, it can prove challenging to determine which will work best. This article takes a look at three common industrial water filtration methods and the best uses for each.
By: WaterProfessionals
ASHEVILLE, N.C. - July 30, 2013 - PRLog -- With so many different water filtration methods available to industrial businesses, it can sometimes prove challenging for those who are not industrial water treatment experts to determine exactly what will work best. This article takes a brief look at three common methods of industrial water filtration and the best uses for each.
Activated Carbon Water Filtration
Activated carbon water filtration (http://www.waterprofessionals.com/process-water/activated_carbon_filters.html) is a type of industrial water treatment most commonly used to remove free chlorine and organic compounds from potable water and waste water. Carbon is typically activated through high temperature steam or chemical activation, which opens the pore structure of the carbon. This allows the carbon to adsorb contaminants as water passes through. The temperature and pH of the water will greatly impact the adsorption ability of the activated carbon. Adsorption increases as pH and temperature decrease. Activated carbon filters are most effective at removing large organic molecules and are not suitable for removing: nitrates, microbes, fluoride, sodium and hardness.
Greensand Water Filtration
Greensand water filtration (http://www.waterprofessionals.com/process-water/greensand...) is an industrial water filtration method commonly used for removing iron, manganese and hydrogen sulfide water contaminants. This type of water treatment is commonly used in the filtration of well water. Iron and manganese in water result in staining and discoloration . Iron will cause staining at concentrations ≥ 0.3 parts per million (ppm), while manganese begins staining at ≥ 0.05 ppm. Greensand filters are typically designed to flow at 3-5 gpm per square foot of filter surface area and need a minimum of 12 gpm per square foot for backwash. An oxidizing agent, such as chlorine or potassium permanganage (frequently both), is typically added to water upstream of a greensand filter to convert soluble material into solid particles.
Multimedia Water Filtration
Multimedia water filters (http://www.waterprofessionals.com/process-water/multimedi...) utilize three or more different filtration medium to filter water. The three layers of a multimedia water filter typically consist of: calcite, anthracite and garnet. This arrangement allows the largest dirt particles to be filtered at the top of the media bed, with finer particles being filtered out towards the bottom. This enables much longer run times between filter backwash. Multimedia water filtration offers one of the most efficient methods of dirt and turbidity removal. With the proper use of flocculants and coagulants, multimedia water filters are capable of removing particles below 10 microns in average diameter.
Of course there are many other industrial water treatment methods available in addition to those listed above, each able to be customized to meet specific water treatment needs. Some examples include:, ion exchange (e.g., cation exchange softening, deionization, demineralization ) microfiltration, reverse osmosis, ultrafiltration and many more! For additional information on these or any of the three water filtration methods listed above, or to request a consult with an industrial water treatment expert, visit: www.WaterProfessionals.com
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