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Pure DI water treatment system meets standards

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DI water treatment system helps create an ultra-pure water source, which is especially important in industries that require absolute precision, typically semiconductor manufacturing.

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    DI technology demineralized water filtration system helps create an ultra-pure water source, which is especially important in industries that require absolute precision, typically semiconductor manufacturing.

    What is DI water treatment system?

    DI (Deionized Water or Deionization Water) water treatment system is an ultra-pure water treatment system, also known as demineralized water treatment system.

    DI demineralized water filtration system adopts advanced treatment technology, which eliminates the following components in water: Chlorides, carbon dioxide CO2, and silica (anions), sodium, calcium, and magnesium (cations) Sulfates, alkalinity. As a result, it creates ultra-pure water with low electrical conductivity, meeting the strict requirements in high-tech industries.

    How does DI demineralized water filter technology make pure water?

    A device needs to combine a variety of treatments to create ultra-pure water. DI filters need to combine with RO reverse osmosis filters, ion exchangers, and other filtration technologies.

    In the DI system, the input water needs to go through the following stages:

    • Pretreatment stage: Depending on the source of water (surface or groundwater), this stage may vary. Water can be filtered through filtration columns containing gravel, manganese sand, activated carbon, or filter columns containing water softening particles ... helping to remove contaminants that affect the RO membrane filter and deionization device at a later stage, and then, improve the efficiency of RO membrane filter, reduce electricity costs.
    • Ultrafiltration filter: The filter holes of the 0.01-micrometer membrane filter remove dirt, grease, and harmful bacteria before introducing water into the RO filter.
    • RO filter system: The pore size of the RO filter is only 0.0001 micrometers, removing up to 99% of pollutants in water.
    • DI water treatment stage: Using exchangeable resins, removing the mineral salts contained in the water.

    Operating principle of the DI device (DI water treatment stage)

    DI demineralization equipment uses the particle exchange technology, which removes unwanted ions from the water (anions and cations). The ion exchange process consists of the following three stages:

    1. Cation exchange:

    In the cation exchange system, metal ions polluting water such as Na +, Ca2 +, Mg2 +, Fe3 + ... are removed.

    The removal process takes place as follows: When water is fed into the cation exchange device, the ion exchange resins absorb and retain the metal ion component, simultaneously, releasing H + ions into the water.

    In summary, the following cation exchange system has occurred:

    R’H + Ca2+ = R2Ca + H+

    R’H + Mg2+ = R2Mg + H+

    2. Anion exchange

    Anion exchange system eliminates unwanted anions in water, maybe Cl–, SO42-, NO3–, CO32-, SiO2–,…. While these anions are absorbed by resins, OH- ions are released into the water.

    After that, OH- ions combine with H + ions in the cation exchange system to form H2O water molecules.

    3. Mixed Bed exchange system

    The Mixed Bed exchange system contains anion and cation exchange particles at a certain ratio to eliminate unwanted negative and positive ions from the water again, helping to create a source of pure finished water, no more polluting ions, resistivity only 10 - 18 MΩ ∙ cm, low electrical conductivity.

    Note: The process of desalination in water can be performed continuously and more cost-effectively by using EDI equipment. Learn more about EDI water treatment systems here.

    Application of DI water treatment system in life.

    Ultrapure water is a term used to refer to water that has "high purity" and low conductivity. All contaminants present in water, such as dissolved, volatile, dissolved gases, dissolved ions, inorganic or organic in water, must be removed.

    The DI water treatment system removes most of the metal ions, minerals, and dissolved salts in the input water, creating ultra-pure water. Therefore, DI plays an important and indispensable role in many industries that need absolute accuracy, especially the semiconductor manufacturing industry and a number of other industries.

    Here are some applications of the DI water treatment system in life:

    • Semiconductor manufacturing: Used in cleaning at semiconductor product manufacturing stages such as memory, microprocessor or plasma screen manufacturing...
    • Manufacturing cars: Plating paints components, equipment in the car, charging process...
    • Medical and pharmaceutical products: For use in laboratories, operating rooms, medicine production, cleaning and dispensing solution...
    • Food processing: Used in the production of food and drink to ensure hygiene and food safety.
    • Boiler, cooling system and other industries ...

    Investing in DI demineralized water supply system is an economical reasonable solution to have abundant pure water sources for long-term production activities. Based on the quality of feed water and user requirements, the DI water treatment system can be customized.

    Please contact our company via hotline 0941 113 286 for the most specific advice for the DI water treatment system you want to install.

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