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    Home > Active Ingredient News > Drugs Articles > What are the processes of the pretreatment system

    What are the processes of the pretreatment system

    • Last Update: 2022-08-20
    • Source: Internet
    • Author: User
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    Purified water equipment can continuously and stably produce water, which is inseparable from a reasonable pretreatment process
    .

    A reasonable pretreatment process is one of the important conditions for water production of purified water equipment.
    The pretreated effluent should meet the influent requirements of the reverse osmosis system, so as to reduce the treatment load of the reverse osmosis membrane of the subsequent purified water system and better protect the reverse osmosis system.

    .

    Raw water tank: It has a storage function.
    When the tap water is cut off instantly, it can also keep the water inlet pressure and water volume of the system running stably
    .

    Clean the spray ball to prevent chlorine corrosion on the head of the tank
    .

    The respirator prevents foreign objects such as insects and rodents from entering the raw water tank
    .

    Raw water pump: The raw water pump provides power for pretreatment to meet the pressure and flow requirements of raw water before reaching the RO unit through the pretreatment unit
    .

    When the liquid level of the raw water tank is higher than the medium and low liquid level, it will automatically open
    .

    Multi-media filter: use natural quartz sand with different particle sizes to form 3~5 filter layers to filter out fine particles, suspended solids, colloids and other impurities in the raw water
    .

    The SDI value of the produced water is less than or equal to 5
    .

    Softener: Pass the raw water through the sodium cation exchange resin to reduce the hardness of the raw water, prevent scaling on the surface of the reverse osmosis membrane, and affect the performance of the reverse osmosis membrane
    .

    Double softening runs in series, with alternate regeneration
    .

    Product water hardness ≤ 3mg/L
    .

    Activated carbon filter: Absorb organics, oxidants, pigments, odors in raw water, and protect the RO membrane from being oxidized
    .

    The residual chlorine value of the produced water is less than or equal to 0.
    05mg/L
    .

    Plate heat exchanger: The front-end pretreatment of the system adopts a plate heat exchanger, and the temperature of the circulating raw water is raised to 80 °C for pasteurization, which effectively prevents the growth of microorganisms in the pretreatment system
    .

    When using purified water equipment, special attention should be paid to correct operation to protect the safety of purified water equipment, to ensure stable and hygienic water quality delivery, and to ensure that the water quality of purified water equipment meets the requirements
    .

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