The pretreatment unit of the ultra-pure water equipment for the food industry is divided into four stages. The first stage is the silica sand filtration stage. The silica sand filters out relatively rough materials, which are basically some particles with large diameters and colloids. The second-stage pretreatment stage is the activated carbon treatment stage. According to the characteristics of activated carbon, it is not difficult to see that the purpose of this stage of treatment is mainly to remove odors and pigments in the water. At the same time, this stage also has the ability to reduce the remaining water. The function of chlorine and toxic substances.
The last two stages of the pretreatment of ultra-pure water equipment in the food industry are precision filtration stages. The third stage is the process of softening the hard water. It mainly uses ion replacement resin and hard ions in water to replace them. These hard ions in water can In the formation of common scale in life, it seriously affects the use time of the second half of the accessories. The fourth stage of pretreatment is to use a filter element to precisely filter the demineralized water so that the final product quality of the pretreatment can meet the water inlet standard of the core host unit.
The core host part of the ultra-pure water equipment in the food industry mainly includes two parts, a reverse osmosis system and an EDI membrane block system. The main role of the reverse osmosis system is to provide water for the EDI membrane block, because the EDI membrane block has very strict water intake requirements. After the reverse osmosis treatment, the water quality desalting rate is as high as 99%, and various metals and toxic and harmful substances in the water will be further removed, which fully meets the water ingress standard of the EDI membrane block.
The bacteria removal system will also be installed in the last part of the ultra-pure water equipment in the food industry. Since the water requirements of the food industry cannot contain any bacterial microorganisms, a sterilization system is necessary.
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