1. Different functions
Pre-filter is usually used to pretreat the water entering the water pipe, mainly to remove impurities, silt, mud and other suspended solids in the water and protect the water treatment equipment behind, such as water purifier, water softener and reverse osmosis equipment. Pre-filtration can effectively prolong the service life and maintenance cycle of subsequent equipment.
The main purpose of the water purifier is to remove microorganisms, toxic and harmful substances, heavy metals and other substances harmful to human health and provide safer, cleaner and healthier drinking water. The water purifier can remove heavy metal ions such as chlorine, lead, mercury, cadmium and arsenic. In water, bacteria, viruses, colloids and other microorganisms and suspended substances can also be removed to provide more pure drinking water.
2. Different installation positions
The pre-filter is generally installed at the water inlet of the water pipe, or it can be installed in front of the water purifier as the pre-filter of the water purifier. The pre-filter is connected with the water pipe, and the water enters the water purifier after passing through the filter screen of the pre-filter to remove impurities.
Water purifiers are generally installed under faucets, which directly filter out impurities and harmful substances in water and provide more pure drinking water. There are many ways to install the water purifier, such as desktop, wall-mounted and wall-mounted. Choose the appropriate installation method according to the actual situation.
3. Different degrees of filtration
Pre-filtration usually adopts physical filtration, and the filter screen used has a large pore size, which can filter out larger impurities and suspended substances, such as soil, sand, fiber and so on. The filtration degree is relatively low, generally above 5 microns, which can not remove microorganisms and harmful substances in water.
Water purifiers usually adopt a variety of filtration methods, including physical filtration, chemical adsorption, ultrafiltration, reverse osmosis and other technologies, which can remove microorganisms, heavy metals, organic substances, harmful substances and so on. In water, the filtration degree is high, which can reach below 0.0 1 micron, providing more pure drinking water.
Pre-filtration is the first coarse filtration equipment for the whole house water, which can filter large particles such as sediment, rust, eggs and red worms in tap water. The pre-filter is generally installed at the front end of the pipeline, so it is named after the word "pre-filter"; And "filtering" refers to the basic principle of this kind of equipment. Pre-filters are usually t-shaped. The left and right ends of the upper horizontal position are a water inlet and a water outlet respectively. The lower "vertical" position is the cylindrical filter screen inside the fuselage, and the lowest end is the sewage outlet, which is controlled by the valve. The precision range of filter screen varies from 5-300 microns according to different brands and models.
Water purifier, also known as water purifier and water purifier, is a water treatment equipment that deeply filters and purifies water quality according to water requirements. Water purifier usually refers to a small household purifier. Its technical core is the filter membrane in the filter element device, and the main technologies come from ultrafiltration membrane, RO reverse osmosis membrane and nanofiltration membrane.