Filter element type of water purifier

Filter element is an important part of water purifier. Do you know how many kinds of filter elements are there? Today, I'm going to show you something

1、 Activated carbon filter element

The activated carbon filter element is made of high adsorption value coal activated carbon and coconut shell activated carbon as filter material, and then sintered and compressed with food grade adhesive. A layer of non-woven fabric with filtering function is wrapped inside and outside the compressed active carbon filter element to ensure that the carbon powder will not fall off the carbon core itself. The two ends of the carbon core are equipped with soft Buna rubber gasket, so that the carbon core can be installed into the filter cartridge with good sealing performance.

2、 PP filter element

PP filter element is also called PP melt blown filter element. The melt blown filter element is made of PP ultra-fine fiber by hot-melt entanglement. The fiber randomly forms three-dimensional microporous structure in the space. The pore diameter of the dimension is gradient distribution along the flow direction of the filtrate. It integrates surface, deep layer and fine filtration, and can intercept impurities with different particle sizes.

3、 Ceramic filter element

Ceramic filter element is a new type of environmental protection filter element, which is made of diatomite mud and special technology. Its average pore diameter is only 0.1 μ m, which is a filter element with high filtering accuracy.

4、 Resin filter cartridge

Resin is a porous, insoluble exchange material. There are millions of tiny resin balls (beads) in the resin filter element of the water softener, all of which contain many negative charge exchange positions that absorb positive ions. It is often used as filter element of water softener, and can pass through resin regeneration agent (soft water salt) after filtration.

5、 Titanium rod filter element

Titanium rod filter element has excellent performance such as corrosion resistance, high temperature resistance, high strength, easy to ensure filtration accuracy, easy to regenerate, etc.; titanium filter element is made of titanium powder by forming and high temperature sintering, so the surface particles are not easy to fall off; the use temperature in the air can reach 500-600 ℃; it is suitable for filtration of various corrosive media, such as hydrochloric acid, sulfuric acid, hydroxide, sea water, aqua regia and iron Filtration of chloride solutions such as copper and sodium.

6、 Nanofiltration membrane filter element

Nanofiltration membrane is a kind of functional semipermeable membrane that allows solvent molecules or some low molecular weight solutes or low valent ions to pass through. It is a kind of special and promising separation membrane. It is named after the size of the material that can be retained is about nanometer.

7、 Air fiber ultrafiltration membrane filter element

Hollow fiber ultrafiltration membrane is a kind of ultrafiltration membrane. It is the most mature and advanced technology in ultrafiltration technology. The outer diameter of hollow fiber is 0.5-2.0mm, and the inner diameter is 0.3-1.4mm. The wall of hollow fiber tube is covered with micropores. The pore diameter is expressed by the molecular weight of the material that can be intercepted, and the intercepted molecular weight can reach thousands to hundreds of thousands.

8、 RO reverse osmosis membrane filter element

The flow mode of water in RO reverse osmosis membrane is from low concentration to high concentration. Once water is pressurized, it will flow from high concentration to low concentration. Only water molecules and some beneficial mineral ions can pass through. Other impurities and heavy metals are discharged from waste water pipes. This method is used in the process of desalination of sea water and the recovery and treatment of astronauts' wastewater. Therefore, RO membrane is also called in vitro High tech artificial kidney.