How does the household anti-seepage water purifier work?

I. Overview of pure water machine: At present, the pure water machine in the domestic market should be five-stage filtration, the * level is the filter element, the second and third stages are activated carbon, the fourth stage is the RO reverse osmosis membrane, and the fifth stage is the refined activated carbon. Mainly used to improve the taste. The filter element of the household (commercial) pure water machine has a service life. The fiber filter can generally last for 6 months, and the activated carbon filter is generally 12 months. Their life depends on the local water quality, water pressure and water consumption. In the case of regular replacement of the filter element, the reverse osmosis membrane has a shelf life of 2 years. If the pretreatment is sufficient, the actual service life can reach 8 years, and the removal rate can reach over 99%. The pure water produced by the pure water machine can be used not only for daily drinking, brewing tea, brewing coffee, brewing milk powder, refrigerating drink, etc. The direct raw drink effect is better, and the pure water is used to make the ice crystal clear and transparent, clean and hygienic, and pure water. It can be used for steamed rice, soup, porridge, etc. The food made is pure and tastes. When it is necessary to eat raw fruits and vegetables, it is easy to wash it with pure water. It is more assured that pure water will not irritate the skin. It washes the face and can play a cosmetic role.

Second, the pure water machine structure principle: the pure water machine's water purification system is based on the reverse osmosis membrane, the part before the reverse osmosis membrane can be called pretreatment, the reverse osmosis membrane is called post-treatment, the following Divided separately:

1. Pre-treatment treatment is the primary purification of raw water to provide a water source for the reverse osmosis membrane. Its main role is to protect the reverse osmosis membrane. Pre-treatment must have two-stage filter: precipitation filter, activated carbon filter. The pre-activated carbon core can not only remove the smell and odor in the raw water, but also have obvious turbidity, color, organic matter, iron, phenol, F, As, Hg, Al, CHCl3, CCL4, residual chlorine, etc. Reduce the effect. By removing residual chlorine in the tap water, damage to the reverse osmosis membrane by highly oxidizing chlorine can be prevented. The pretreatment can also increase the resin filter element as needed, reduce the hardness of the raw water, and prevent the surface of the reverse osmosis membrane from scaling.

2. Pure water machine RO membrane is a material with selective separation function. The process of separating, purifying, and concentrating different components of a feed liquid by selective separation of membranes is referred to as membrane separation. It differs from conventional filtration in that the membrane can be separated in the molecular range and the process is a physical process without the need for phase changes and the addition of auxiliaries. The pore size of the membrane is generally on the order of micrometers. According to the difference in pore diameter (or molecular weight cut-off), the membrane can be divided into microfiltration membrane, ultrafiltration membrane, nanofiltration membrane and reverse osmosis membrane, which can be divided into different materials according to different materials. Inorganic membranes and organic membranes, inorganic membranes mainly have only microfiltration grade membranes, mainly ceramic membranes and metal membranes. The organic film is made of a polymer material such as cellulose acetate, aromatic polyamide, polyether sulfone, polyfluoropolymer or the like. Membrane separation process: Membrane is the core component of each membrane process. It can be seen as a barrier with permeability between two phases, or as an interface between two phases. The membrane separation process can be from raw materials or upstream. Permeate or downstream. A component of the raw material mixture can be passed through the membrane to the downstream side faster than the other components, thereby achieving separation.

3. Post-treatment of the post-treatment pure water machine can adopt activated carbon filter, ultraviolet sterilization lamp and the like. The function of the post-activated carbon filter is to deeply treat the pure water produced by the reverse osmosis membrane to remove volatile organic compounds, odor and improve the taste of pure water. Especially in a pure water machine using a pressure type water storage tank, the post-activated carbon can effectively remove the rubber smell generated by the water storage tank. UV sterilizing lamps are often used on high-grade water purifiers to prevent secondary contamination of purified water.

4, booster pump and control system Because the reverse osmosis membrane requires 0.4-0.8MPa of raw water pressure, so the pure water machine water purification system must be equipped with a special booster pump. The booster pump generally uses a 24V DC power supply and is controlled by a water level switch or a pressure switch.

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