Liquid filters are devices that are used to remove and separate solids, dust, odors, chemical vapors and waterborne pollutants from a variety of liquids. They are also designed to neutralize unpleasant odors. Liquid filters service wide-ranging industrial applications such as: filtration requirements in the automotive, chemical, electronics, medical, food-processing, and photographic sectors etc. Liquid filters are designed to allow a liquid to pass through the filter, but they trap any unwanted particles. These filters are designed to eliminate a wide range of materials from the liquid stream.
Liquid filters are divided into pressure and vacuum type filtration systems. Pressure filters are semi-continuous filters that combine a water and cake mode at the end of the filtration cycle ranging between 5-10 minutes. Candle filters; centrifuge, vertical belt press and filter press cloths; Kelly and strainer bags; and pressure leaf covers are the various types of pressure filters. Vacuum filters encompass dual belt filters, horizontal filter belts, horizontal pan filters, rotary drum filters and vertical disc filters. The fabric in the filter enables a liquid-solid separation and is crucial in enhancing efficiency and predicting operational costs.
Factors that are critical in selecting the appropriate filter media are the fabric, the fiber, and the finish and fabrication methods. Filter fabrics are available as monofilament, multifilament, combinations of both, as well as spun. Other accessories include: filter pads that protect the membranes from premature blockages, cartridges for industrial liquid-solid separation and absorbents. Other things you should take into consideration include the cost factors such as installation costs, operating costs and waste disposal costs. You also need to consider if the filter will be running continuously as well as how filter cleaning will affect the liquid.
When dealing with waste disposal and its costs, the chemical characteristics which make up the filtered materials will basically determine your waste disposal options. If the materials that are filtered are hazardous, they will be more costly to dispose of than organic or other harmless materials would. How frequently the filters need to be cleaned will also affect your costs as the more you clean them the more you will have to dispose of the filtered materials.