The main components of the laboratory water purifier need to pay attention to the details when using

       During the operation of the laboratory water purifier, any major component is indispensable. Precision filter element, activated carbon filter element, reverse osmosis membrane, and purification column are all materials with relatively long lifespan. Precision filter element and activated carbon filter element actually protect the reverse osmosis membrane. If they fail, the load on the reverse osmosis membrane will increase and the service life will decrease. If it continues to be turned on, the quality of the pure water produced will decrease, which will increase the burden on the purification column, and the life of the purification column will be shortened. The result is an increase in the cost of using the ultrapure water machine. Therefore, in the use of ultrapure water machines, there are the following things to pay attention to.

1. Precision filter element

Remove water or other impurities through multi-media or mechanical filter, effectively protect RO membrane from being broken down by solid particles

Quartz sand: use resistance to intercept, adsorb and coagulate, so that fine suspended solids and colloidal substances are removed. penetration

The filter element is placed in the filter bottle. Some filter bottles are transparent, and the color change of the filter element can be observed intuitively. Some filter bottles are opaque. From the empirical data statistics, the life of the precision filter element is generally 3-6 months. If the raw water has more sediment, the life is shorter, and the sediment and other particles are less, the life is slightly longer.

2. Activated carbon filter

Through adsorption, most organic matter is absorbed, and almost 100% of residual chlorine is absorbed

There are many kinds of activated carbon to choose from, such as mineral raw material activated carbon, wood activated carbon, fruit shell activated carbon, coconut shell activated carbon:

The coconut shell activated carbon in the fruit shell activated carbon is generally used, which has the characteristics of high strength, high adsorption performance and long service life.

3. Reverse osmosis membrane

The reverse osmosis membrane is a very important part in the ultra-pure water machine. Its pore size is very small, so microscopic substances such as bacteria are often deposited on its surface during use. Generally, the water purifiers of various manufacturers have a backwash function. Wash away contaminants.

If the water consumption is within 10 liters/day, it can be rinsed 3-5 times. If it exceeds 10 liters, rinse it several times. If it is not used for a long time (such as more than 1 month), it needs to be taken out and soaked in disinfectant to avoid the growth of bacteria, but the process is troublesome. The water forms circulation and minimizes the deposition of stagnant water for too long. The life of the reverse osmosis membrane is 2-3 years, which is mainly determined by the water consumption, so be sure to choose the matching specifications when choosing.

4.EDI ion exchange

Electrodeionization (EDI) system is mainly a scientific water treatment technology that purifies water quality by directional movement of dielectric ions in the water through the separator under the action of a DC electric field and the selective permeation of ions by an exchange membrane. .

5. UV

Generally called ultraviolet light, the principle and structure are similar to ordinary fluorescent lamps but slightly different

1. UV irradiation is mainly used in the field of sterilization, especially the sterilization effect of ultraviolet rays near 260nm is better.

2. In addition, with shorter wavelength UV can effectively decompose organic substances (185nm)