How much do you know about the types of water purifier filters?

How much do you know about the types of water purifier filters? The water purifier filter element uses different types of filter elements according to the different uses of the filtered water. Do you know these filter elements? Activated carbon filter elements There are two types of activated carbon filter elements: compressed activated carbon filter elements and bulk activated carbon filter elements. 1. Compressed activated carbon filter element uses coal-based activated carbon with high adsorption value and coconut shell activated carbon as filter material, and is sintered and compressed with food-grade binder. The inside and outside of the compressed activated carbon filter element is wrapped with a layer of non-woven fabric with filtering effect, to ensure that the carbon core itself will not drop carbon powder. Both ends of the carbon core are equipped with soft nitrile rubber gaskets, so that the carbon core can be loaded into the filter cartridge. Has good sealing. 2. Bulk type activated carbon filter packs the required activated carbon particles into a special plastic shell, and welds the end caps on both ends of the shell with welding equipment. Filter to ensure that the carbon core will not drop carbon powder and black water during use. According to the needs of customers, the shell end cover can be made into different types of connection ports. Interface methods are: flat pressure type, pipeline type. PP filter element PP filter element is also called PP melt-blown filter element. The melt-blown filter element is made of polypropylene ultrafine fibers by thermal fusion entanglement. The fibers randomly form a three-dimensional microporous structure in space. , deep and fine filtration in one, can retain impurities of different particle sizes. The filter element has a precision range of 0.5-100μm, and its flux is more than 1.5 times that of the same precision peak room filter element. Different types of end cap joints can be configured to meet the needs of various engineering installations. Ceramic filter element The ceramic filter element is a new type of environmental protection filter element, which is prepared by using diatomite mud as raw material and using a special technology molding method. Its average pore size is only 0.1μm, which is the filter element with the highest filtration precision at present. Today, Pureeasy and Katadyn of Switzerland mainly use this water purifier filter element technology. The purpose of the ceramic filter element is to remove the liquid medicine, plating solution and solid particles in the tap water in the water, and the carbon filter element removes the organic impurities in the liquid. During filtration, the solution is pushed by the pump and flows through the filter cartridge and the filter element, and the particles are isolated in the filter element, and the filtered solution is returned to the electroplating tank or solution tank through the core tube. It is true that the filter paper can also filter out particles, but the function is different from that of the filter element. The filter paper relies on the surface to isolate the particles, while the filter residue of the filter element is hidden between the yarns, and its surface area is much larger than that of the filter paper. Resin Cartridges Resin is a porous, insoluble exchange material. The resin filter element in the water softener contains millions of fine resin balls (beads), all of which contain many negative charge exchange sites that absorb positive ions. When the resin is in the nascent state? These charge exchange sites are occupied by positively charged sodium ions. As calcium and magnesium pass through the resin reservoir, they come into contact with the resin beads, displacing sodium ions from exchange sites. The resin preferentially binds strongly charged cations, with calcium and magnesium ions having a stronger charge than sodium ions. The displacing sodium cations then pass down the resin' bed and out of the water softener so that the water softener sends out 'soft' water. Finally, all resin exchange sites are occupied by calcium and magnesium, and no work can be done anymore. Titanium rod filter element Titanium rod filter element has excellent properties such as corrosion resistance, high temperature resistance, high strength, easy to ensure filtration accuracy, and easy regeneration; titanium filter element is made of titanium powder by forming and sintering at high temperature, so the surface particles are not easy to fall off; The operating temperature can reach 500~600 °C; it is suitable for the filtration of various corrosive media, such as: hydrochloric acid, sulfuric acid, hydroxide, seawater, aqua regia, and iron, copper, sodium and other chloride solutions. Improving the activation degree of water is more conducive to the absorption of water by the human body, protects human health, and promotes human metabolism. It is with this material that the KDF filter element is made. This filter element is the best configuration for use in water purifiers. Nanofiltration membrane Nanofiltration membrane is a functional semipermeable membrane that allows solvent molecules or some low molecular weight solutes or low valent ions to pass through. It is a special and promising type of separation membrane. It is named for its ability to intercept substances with a size of about nanometers. Between 98%, the desalination of monovalent anion salt solutions is lower than that of hypervalent anion salt solutions. It is used to remove the organic matter and color of surface water, remove the hardness of groundwater, partially remove dissolved salts, concentrate fruit juice and separate useful substances in medicines, etc. Hollow fiber ultrafiltration membrane 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 the hollow fiber: 0.5-2.0mm, the inner diameter: 0.3-1.4mm, the hollow fiber tube wall is full of micropores, and the pore size is expressed by the molecular weight that can intercept substances, and the molecular weight interception can reach several thousand to hundreds of thousands. The raw water flows under pressure on the outside or the inner cavity of the hollow fiber, forming an external pressure type and an internal pressure type respectively. Ultrafiltration is a dynamic filtration process, and the trapped substances can be removed with the concentration, without blocking the surface of the membrane, and it can run continuously for a long time. Ultrafiltration membrane is one of the earliest developed polymer separation membranes. RO reverse osmosis membrane RO reverse osmosis membrane, RO is the abbreviation of English Reverse Osmosis membrane, Chinese meaning: reverse osmosis (reverse osmosis), the general flow of water is from low concentration to high concentration, once the water is pressurized, it will flow from high to high. The concentration flows to a low concentration, that is, the principle of reverse osmosis: because the pore size of the RO membrane is five millionths of a hair (0.0001 micron), it is generally invisible to the naked eye, and bacteria and viruses are 5,000 times larger than it. Therefore, only Water molecules and some mineral ions that are beneficial to the human body can pass through, and other impurities and heavy metals are discharged from the waste water pipe. This method is used in all seawater desalination processes and the recovery and treatment of astronaut waste water. Therefore, RO membrane is also called an in vitro high-tech artificial kidney. .
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