What causes the water quality of the ultrapure water machine to decline?

      Ultrapure water machine is a kind of laboratory water purification equipment. It is a water treatment that removes all solid impurities, salt ions, bacterial viruses, etc. device. Laboratory ultrapure water equipment is widely used in medical, electronics, chemical, biophysical and chemical laboratories and other industries. The equipment can usually produce pure water and ultrapure water. After a long-term use of the ultrapure water machine, sometimes the water quality will decline. Let's talk about the objective reasons and human reasons in detail.

The reasons for the decline of the water quality of the ultrapure water machine:

1. Objective reasons:

① Raw water problem

The raw water quality is poor and the TDS value is too high, resulting in a large filtration load of the ultra-pure water machine, resulting in many impurities passing through the membrane element by chance. It is recommended to install pretreatment equipment to effectively reduce the organic content of raw water.

② Absorb impurities

Although pure water has a low ion concentration when it is first made, it has a strong ability to absorb impurities. If it is not used immediately, but stored in a water storage tank or exposed to the air, it is very easy to absorb bacteria, ions, particles and other impurities from the air or the exhaust port of the water storage tank. A filter is recommended for the exhaust port. If the water storage tank is made of low-grade plastic, the material is not good enough, and the dissolved organic matter will also cause the water quality to decline.

③The flow rate is too fast

Due to the excessive water pressure or the air resistance of the filter element, the flow rate of the water body is too large, and the filter material layer is quickly penetrated without thorough exchange with the resin, resulting in incomplete filtration of impurities. It is recommended to add a pressure reducing valve to reduce the water pressure, find the cause of the air resistance and solve it in time.

2. Human reasons:

① Improper use

Some operators will use pure water that has been stored for more than 24 hours, and the cleanliness of the water container is not guaranteed. It is recommended that you use clean containers as you go to avoid secondary pollution of pure water.

②Improper maintenance

If the water in the storage tank is not drained regularly, it is very easy to breed bacteria. It is recommended that you use a sterile water tank and disinfect the equipment regularly. After the filter element is used for a period of time, the filter material layer may be blocked or even produce mud balls, which greatly reduces the filtering effect. If it is not cleaned or replaced regularly, it will inevitably lead to water quality degradation. It is recommended that you clean and replace the filter element regularly.