Nowadays, the water treatment equipment used in the water treatment industry is closely related to our domestic water. In order to make the service life of reverse osmosis pure water equipment longer, it is necessary to carry out regular maintenance and replace consumables. The consumables of reverse osmosis pure water equipment mainly include quartz sand, activated carbon, softened resin (after inhibitor), PP filter element and reverse osmosis membrane.
Quartz sand
Replacement cycle: the normal service life is about 8-24 months.
Quartz sand is a kind of water treatment filter material, which is made of high-quality fine quartz sand through crushing, screening, washing and other processes and secondary screening. It has the characteristics of pure white, low impurity content, multi angle, high density, high mechanical strength, strong pollution interception ability and good acid resistance. It is resistant to erosion, stable chemical performance, stable water quality and no blockage in the process of filtration and washing, It is an ideal material for purified water treatment. Quartz sand filter material plays a filtering role, just as water seeps into the ground through sand and stone, blocking those suspended substances in the water, mainly aiming at those fine suspended solids. Application of quartz sand as filter material: quartz sand is combined with filter container, which is used to intercept suspended solids, colloids and other particulate impurities in water, so as to play a filtering role. It is stable in neutral and acidic water, but slightly dissolved in alkaline water. The increment of SiO2 in chemical water treatment is less than 2mg / L.
Activated carbon
Replacement cycle: the normal service life is about 8-24 months.
The main function of activated carbon is to remove macromolecular organic matter, iron oxide and residual chlorine. Organic matter, residual chlorine and iron oxide are easy to cause ion exchange resin poisoning, while residual chlorine and cationic surfactant will not only poison the resin, but also destroy the membrane structure and make the reverse osmosis membrane invalid.
Softened resin
Replacement cycle: the normal service life is about 8-24 months.
Softening resin, cation exchange resin is one kind of polymer, with the corresponding functional groups. In general, conventional sodium ion exchange resins contain a large amount of sodium ions.When the content of calcium and magnesium ions in water is high, the ion exchange resin can release sodium ions, and the functional groups can combine with calcium and magnesium ions,in this way,the content of calcium and magnesium ions in water is reduced, and the hardness of water is reduced, and the hard water becomes soft water. The general brands used are Shanghai PiaoYichun, British PUROLITE, American Dow, American AMBERLITE and so on.
