Media filtration systems in Australia are used to remove contaminants and pollutants from water, remove debris that could damage equipment and maximise manufacturing efficiency. There are different types of filtration systems you can choose from and this makes it challenging to choose the right system for your needs. Read on as we explain some of the most important things to consider when choosing the right filtration system for your application or needs.
Particle or material characteristics
Knowing the size and type of particles filtered allows you to choose the right size for the filter. E.g., well water contains various inorganic debris such as sand whereas surface water or pond water contains mostly organic substances such as leaves and algae. Typically, the inorganic matter requires a smaller screen to trap the sediment and sand that would otherwise pass through a larger one. Apart from water, you can filter other viscous fluids such as paint, paper coatings and everything in between. Knowing the characteristics of the material is the best way to choose the right filtration system.
Maximum operating flow
Another thing you need to know is that flow rate will determine the size of the filter needed for your application. For example, a two-inch filter accommodating a flow of 100 GPM will not work for a system that operates at 150 GPM. If this was the case and you were operating at a 150-GPM maximum flow then it means that you would choose a filter that is larger with one size. It is important to note that if you are using a backwashing filter then the minimum flow rate should be considered when choosing the best media filtration systems.
Maximum and minimum operating pressure
It is crucial to understand that every filter is rated for maximum operating pressure. It is therefore very important to have an accurate maximum pressure measurement when choosing a filter. Minimum operating pressure isn’t a requirement for all types of filters. However, it is important when using an automated, self-cleaning filter. When the flushing mechanism of the filter is engaged then the minimum operating pressure should be well-maintained.
This is a decrease in the pressure of the fluid across the piping component such as a filter. When liquid is passed forcefully through the filter where contaminants are removed, it changes its direction severally. The action causes a certain amount of resistance to the flow of the fluid resulting in lower pressure after the liquid is passed through the filter. Various factors contribute to the pressure drop such as the contaminants present, filter media, viscosity and flow rate.
When choosing media filtration systems in Australia, it is important to care about the pressure drop. As the strainer or filter bag begins to fill, the pressure drop will increase as the filtered debris reduces the surface area of the filter. Once a point is reached where there is too much pressure to overcome this, the desired flow of the fluid through the filter is compromised. The amount of the surface area of the filter and the loading of the media being filtered will determine the frequency needed to be emptied. When the pressure drop is too high, the filter will clog.