In the use of ultra-pure water machines, there are things to be aware of.
Precision filter
The precision filter element, also known as the filter filter element, the split-line wound filter element and the PP melt-blown filter element, mainly filters large particles such as sediment in the raw water, and the filtration precision is 5 micrometers and 1 micrometer. The new filter element is white. If the surface is long, the surface will be silted, etc., and it will appear brown. This means that the filter element can not be used. After washing the surface sludge with tap water, it can barely continue to use for 1-2 weeks, but it cannot be used for a long time. . The filter element is placed inside the filter bottle. Some filter bottles are transparent. The color change of the filter element can be visually observed. Some filter bottles are opaque and need to be unscrewed to observe the change of the filter element. From the empirical data statistics, the life of the precision filter element is generally from March to June. If there is more sediment in the raw water, the life is shorter, and the sediment and other particles are less, the life is slightly longer.
2. Activated carbon filter
The activated carbon filter mainly removes odors and organic substances in the water by adsorption. There is residual chlorine in the tap water, which has a great oxidation effect on the reverse osmosis membrane, so it must be removed by activated carbon. There is no intuitive change in the surface of the activated carbon filter. According to experience, it is generally saturated in a year or so and needs to be replaced.
3. Reverse osmosis membrane
The reverse osmosis membrane is an important part of the ultra-pure water machine. Its pore size is very small. Therefore, microscopic substances such as bacteria are often deposited on the surface during use. Generally, the pure water machine of each manufacturer has a backwash function. Wash off the contaminants. The water consumption can be washed 3-5 times within 10 liters/day. If it exceeds 10 liters, it should be washed several times. If it is not used for a long time (such as more than 1 month), it needs to be taken out and immersed in the disinfectant to avoid the breeding of bacteria. However, the process is troublesome. It is recommended that even if it is not used, it is often turned on with a small amount of water to allow the inside of the machine. The water forms a circulation, and the deposition time of the dead water is minimized. The life of the reverse osmosis membrane is 2-3 years, which is mainly determined by the customer's water consumption, so the user must choose the matching specifications when purchasing.
4. Purification column
The purification column is sometimes called ultra-purification column according to the customer's water quality requirement. The self-acting is deep desalting of reverse osmosis pure water, and finally reaches the level of first-grade water or ultra-pure water. The principle is ion exchange. The lifetime of the purification column is represented by the resistivity online. Below a certain resistance means that the purification column has expired and is relatively intuitive. In addition to its anti-customer water consumption, its life is especially important for the amount of ion exchange resin and the quality of the ion exchange resin in each manufacturer's design.
5. Water
Ultra-pure water machines with tap water as the water source generally have two outlets, namely three-stage water and first-grade water. The water that is reverse osmosis is three-stage water, which is stored in the water tank, and the first-stage water is ready to use. Take it, don't store it. The tertiary water does not pass through the purification column, and the first stage water passes through the purification column, and the cost of the first stage water is higher than that of the third stage water. Therefore, when customers use it in daily use, they should take water according to the water quality requirements. When using the third-grade water, try not to use the first-grade water to avoid the rising cost.
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