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Manufacturing Technology Insights | Tuesday, March 09, 2021
The liquid filtration process is an essential step in several applications that reuse water within systems.
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FREMONT, CA: Liquid filtration is a process that avoids particles and other media of a specific size and larger from liquids. Avoiding these particles and debris from a wastewater system enables the water to be reused within that system. This type of filtration operation is important for several reasons. Reusing filtered water enables companies to mitigate their overall waste, lower their water use, and diminish possible chemical consumption. The filters leveraged for wastewater filtration vary from system to system. This is essential for many reasons. First, the water coming inside the system can impact the type of filtration system needed. Second, the water's needed purity to be reused after being filtered plays a role in the filter type required.
There are two types of filtration in wastewater treatment systems: particle filtration and membrane filtration. Particle filtration is a system that differentiates solids from liquids utilizing either physical or mechanical means. When it comes to wastewater filtration, particle filtration is usually one of the first steps in treating contaminated wastewater. This is because particle filtration is tailored to remove solids measuring larger than one micron. Different filters can be used within particle filtration. A few choices are available because several aspects of the wastewater to be treated can vary, depending on the water system. The most commonly impact filter choice characteristics comprise the density of particles, particle size, quantity, shape, and texture. Any substances present within the water also impact the type of filter required for the system.
Membrane filtration is usually used when particle filtration alone is not enough for water reuse. The treatment and steps needed to process the water can transform greatly depending on what the end aim for the water is. The cleaner the water is needed to be, the greater the number of processes that must be leveraged. When the highest water quality is in need, it is common to see membrane filtration systems being used. Recent enhancements to membrane filtration operations have worked to increase successful operation while also reducing the filtration system's cost.
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