Filters

Pre-filter

A pre-filter is a device that filters big particles out of the air or water. Masks and respirators are examples of air pre-filters. Air pre-filters are used to remove dust, hair, insects, pollen, fibers, and other contaminants from the air supplied at the workplace or in cars. Pre-filters in drinking water remove sand, fibers, and bigger contaminants.

Pre-filters in air purifiers and respirators clean the air to the desired level using physical and chemical processes with fibrous pleated paper, foam, cotton, ionizers, and other materials before it passes through other filters for further purification. Buildings, transportation, and industry all use air purification systems with prefilters. There are many different technologies and user-defined criteria for air prefilters, hence there are no established performance regulations. Many commercial air prefilters are available for use in air filtration equipment at residences, workplaces, hospitals, transportation, and other locations, as well as in personal respirators.

Water prefilters are used in water purifiers. These use physical and or chemical processes with fibrous pleated nylons, sands, pebbles, activated charcoal, chemicals, ultra violet ray etc. and clean the water before further purifications. Many commercial options for water prefilters are available for the use of water filtration units at homes, workplaces, hospitals, hotels, transports etc.

Prior to additional treatment operations, roughing pre-filters lower the amount of suspended matter in the water. Slow sand filtering is the most common application.

The following are some of the benefits of using a prefilter:

The prefilter element, unlike other filter elements, is not used for half a year or a year. The pre-filter can be removed and washed on a regular basis, then reused for a period of ten to twenty years. Even better, part of the prefilter includes an automatic flushing function; you won't have to remove and wash it manually because it will flush itself on a regular basis. It can also solve the problem of high water pressure in the water purifier and prevent damage to the water purifier's filter element when the water pressure rises. Furthermore, the prefilter may protect the water safety of various household appliances at home, such as high-end faucets, washing machines, water heaters, toilets, and so on.

Prefilter disadvantages:

The first point is that the prefilter essentially discharges waste water, so you must be aware of this problem when installing and reserve the waste water pipe in advance, otherwise it will not be used later; the second point is that the prefilter essentially discharges waste water, so you must be aware of this problem when installing and reserve the waste water pipe in advance, otherwise it will not be used later; the third point is that the prefilter essentially discharges waste water, so you must be aware of The filter uses a filter method that is installed at the home's water input, which will have an effect on the water pressure in the house.

Through the pressure of tap water, the backwash prefilter penetrates the inner wall of the filter screen to the outer wall, trapping particle pollutants such as sand, rust, and other contaminants.

How does the industry choose the filter system for their application?

Based on the characteristics of the particles,flow of the fluid, the pressure of the fluid, and the cost and waste management.

What are the benefits of using filters?

Using a standard filter reduces maintenance costs and thereby increases the lifetime of the equipment.

It will also considerably reduce the pollution which leads to various health hazards.
It will improve the efficiency of the treatments.

Which industries use the filters? 

Petrochemical industry, food, and beverage industry, metallurgical industry, pharmaceutical.

What is the use of filters in the petrochemical industry?

The petrochemical industry uses the filter for removing or separating large impurities or particulate matter from petroleum products.