The ultrapure water system is the main water supply system in the laboratory. In order to ensure the water quality of the system, it is particularly important to do a good maintenance. Let's learn how to properly maintain the ultrapure water system.
Pretreatment module, reverse osmosis membrane and purification column module are all consumables with relative service life. The pretreatment module is actually the protection of the reverse osmosis membrane. If the pretreatment module fails, the load of the reverse osmosis membrane will be increased and its service life will be shortened. If you continue to run the machine, the resulting pure water quality will decrease, and then the burden of the purification column module will be increased, and the life of the purification column module will be shortened. The end result is to increase the use cost of ultrapure water machine.
So, in the use of ultrapure water machine, there are the following things to pay attention to.
Pretreatment module
QiQin ultrapure water system adopts integrated pretreatment module, including PP filter and AC filter.
PP filter is mainly used to filter large particles such as sediment in raw water, with filtration accuracy of 5 microns and 1 micron. The new filter is white, if the time is long, the surface of PP filter will deposit sediment, etc., brown, which means that the filter can not be used. AC filter mainly remove odor, organic matter and so on in raw water through adsorption. Residual chlorine in tap water has a great oxidation to the reverse osmosis membrane, so it must be removed by activated carbon filter.
Service life of the pretreatment module is generally about 6 months. If raw water is full of sediment and impurities, the life of the pretreatment module will be shorter. If the raw water quality is good, the life of the pretreatment module will be longer.
Reverse osmosis membrane
Reverse osmosis membrane is a very important part in ultrapure water system. Its aperture is very small, so in the process of use often bacteria and other microscopic materials deposited on the surface. QiQin pure water machine has backwash function to wash away the pollutants on the reverse osmosis membrane.
If water consumption is within 10 liters, it can be rinsed 3-5 times. If the water consumption is more than 10 liters, it can be rinsed several times. If it is not used for a long time (such as more than 1 month), it is necessary to take out the reverse osmosis membrane and soak it in the disinfectant to avoid the breeding of bacteria, but this process is more troublesome. It is recommended that even if no water is used, a small amount of water is often turned on to allow the flow of water inside the machine to reduce the deposition time of standing water too long. The life of reverse osmosis membrane is 2-3 years, which is mainly determined by the water consumption. Therefore, when selecting a ultrapure water machine, it is necessary to choose the matched specifications according to your water consumption.
Purification column module
The purification column module adopts the principle of ion exchange, and its function is to conduct deep desalination of pure reverse osmosis water to reach the quality of first grade water or ultrapure water.
Service life of the purification column of the laboratory ultrapure water system is represented by the online resistivity value of ultrapure water. Lower than a specific resistance means the purification column expired. In addition to the water consumption, the important thing that determine service life of purification column is the filling quantity and quality of ion exchange resin. QiQin adopts high-quality ion exchange resin, and the service life of the purification column module is 6-18 months, which varies according to the water consumption and daily maintenance.
Hunan Qiqin Environmental Protection Technology Co., Ltd is a Chinese high-tech enterprise, which is specialized in design, manufacturing, sales and services of water purification equipment. Products includes laboratory ultra pure water machines, medical pure water machines, industrial water purification machines, central pure water systems.
