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How the Filtration Works

10/7/2013 8:13:18 AM | by Anonymous

Filters: Process

Filters process is the removal of suspended solids that play an important role in the natural treatment of groundwater as it penetrates through the soil. Groundwater that has been treated and softened through manganese and iron removal will require removing particles created by oxidation process. Since the surface of the water sources are subject to run-off and they do not undergo natural filtration, this must be filtered to remove the impurities and particles.


It is commonly known as the physical or mechanical operation which is used for the separation of solids such as liquids or gases by interposing a medium through which the only fluid can pass. However, oversize solids in the fluid are retained and the separation will not complete as solids will be contaminated with some fluid and filtrate will contain some fine particles which depends on the filter thickness and pore size. The filters process are also used to describe some biological processes that are specifically in sewage and water treatment in an undesirable constituents that are removed by absorption in the filter medium as in the slow sand filtration or into a biological film grown.


The filters process involves the flow of water through a granular bed, sand or another suitable media that is at a low speed. This is to retain most solid matter while permitting the water to pass through. This is usually repeated to ensure that there is adequate removal of unwanted particles in the water. The oldest method for filters processing is known as slow sand filtration and is still widely used in the municipal water treatment plants today.


There are more modern filtration systems that use carbon as their main constituent material of the filter as this will compressed into a solid block form as well as opposed to be more loosely structured, sand filters and granular. They are often included with other media substances such as solid carbon and are known as a multimedia filter. These filters clean water through both chemical and physical processes.


Physically, they all perform the same function to slow sand filters by blocking the passage of unwanted materials with the molecular structures that are usually larger than water. As for the chemical processes, they are multimedia filters or carbon that performs an added filtration function. Through these processes of absorption, there will be an atomic charge of the carbon and other media that encourages unwanted particles to abandon their bond with water and then chemically attach to the media.


The water then passes through the filter and cleanses of the undesirable materials. These additions of extra media to the standard filter constitution of sand or carbon allow for more particles to chemically bond to the media that results in greater filter performance and efficiency.


Water is generally directed through the several stages carbon and multimedia filters to ensure that they are removed by all the unwanted materials. The first stage of filter process will remove the most concentrated chemicals like chlorine while subsequent stages will remove more evasive chemicals like pesticides.

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