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Because many enterprises do not know about purified water equipment, improper operation in the use process leads to the damage of purified water equipment and failure time is not uncommon. Therefore, before using the purified water equipment, we should read the instructions in detail and carry out regular maintenance. The following are some points for attention in the use and maintenance of the purified water equipment.

The water source should be connected before starting the purified water equipment. After checking the pipeline of the equipment, the water supply for the electrical and electronic industry should be connected. If it is necessary to stop using the equipment, the power supply should be turned off first and then the water source should be shut off. The equipment should be electrified and watered for a long time. Because the purified water equipment has automatic control function, such as frequent power failure and water cut-off will affect the normal use of the equipment. When using purified water equipment, the filter elements at all levels should be replaced regularly according to the requirements to ensure the service life of the equipment and the quality of the effluent.

When the purified water equipment is not used temporarily, the power supply and water source should be turned off first. After several months of continuous use of the purified water equipment, users should discharge all the pure water stored in the purified water equipment once according to the situation. This can play a cleaning role. When scrubbing the appearance of the purified water equipment, some neutral cleaners should be used.

The most important thing is the maintenance of reverse osmosis components. Reverse osmosis is the core component of pure water system. Raw water which has been pretreated and meets the requirements of reverse osmosis membrane becomes pure water after reverse osmosis filtration. Therefore, the key to ensure the quality of pure water is to do a good job in the maintenance of reverse osmosis. The concentration of salt on the surface of reverse osmosis membrane is higher than that in the main fluid, which is called concentration polarization. The result of concentration polarization is that some salt deposits on the membrane surface, blockages the water production channel of reverse osmosis membrane, and decreases the water production of membrane. Organic substances in feed water will deposit on the membrane surface when they are not washed out continuously or regularly, especially some charged reverse osmosis membranes, which will attract charged organic substances and stick them to the membrane surface.

The deposition of organic matter on the surface of the membrane causes more serious damage to the membrane than the deposition of salt on the surface of the membrane. Sometimes the damage is irreversible. The concentration of organic matter and various salts on the membrane surface is much higher than that in the main stream, which provides abundant nutrition for bacterial reproduction. A large number of microbial flora not only blocked the water production channel, but also caused irreversible damage because the reverse osmosis membrane itself is an organic matter, which will be decomposed by microorganisms. The oxidative substances such as residual chlorine in water are enriched on the surface of the membrane. After enrichment to a certain extent, the reverse osmosis membrane will be oxidized and decomposed beyond the concentration of the membrane itself.

Author: Hangzhou Water Shield Technology Co., Ltd.

Website: http://www.zjhzsd.com/

Key words: water equipment in electronic industry, desalination equipment