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    Device for treating fluorine-containing wastewater by hydrochloric acid-lime method

    • Device for treating fluorine-containing wastewater by hydrochloric acid-lime method
    Device for treating fluorine-containing wastewater by hydrochloric acid-lime method
    一種鹽酸-石灰法處理含氟廢水的裝置
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    Device for treating fluorine-containing wastewater by hydrochloric acid-lime method


    Patent No.: ZL201620703360.2


    Application date: 2016.07.06


    Announcement (announcement) date: 2016.12.14


    Main technical features:


    ü The treatment device comprises a defluoridation reaction tank, a coagulation reaction tank and a sedimentation tank connected in sequence, and the defluorination reaction tank is provided with a waste water inlet and a discharge port for injecting fluorine-containing wastewater, and the defluoridation reaction tank passes through the discharge port and the coagulation reaction tank. Connection, the coagulation reaction tank is connected with the PAC and PAM adding device, the sedimentation tank is provided with a sediment discharge port and a sedimentation slurry discharge port, and the defluorination reaction tank is also connected with the hydrochloric acid pool and the lime pool by adding a pump, and the defluoridation reaction tank is connected. The liquid is initially acidic, the liquid discharged from the discharge port is alkaline, the pH of the liquid entering the discharge port of the defluoridation reaction tank is 7.5-8.0, the pH recovery tank is connected with the sedimentation slurry discharge port, and the pH recovery tank is provided with a standard. The venting port and the pH adjusting tank are further provided with a hydrochloric acid adding device for injecting hydrochloric acid into the pH adjusting tank, the defluorination reaction tank is provided with a pH meter, and the pH adjusting tank is provided with a pH meter, a stirring device, a defluoridation reaction tank and a coagulation reaction tank. Mixing device


    ü Add hydrochloric acid, lime, acid and alkali to the defluorination reactor to form an acidic environment. Under acidic conditions, the lime will be fully separated. By adjusting the amount of hydrochloric acid and lime added, the fluorine-containing wastewater will be fully reacted to ensure After treatment, the discharge standard is reached to prevent the lime from decomposing without participating in the reaction and directly discharging the discharge.


    ü Adding materials such as hydrochloric acid and lime, the source is wide and the price is low, which can reduce the waste water treatment cost to the greatest extent. At the same time, it can ensure that the wastewater meets the standard treatment. It does not need secondary sedimentation tank, it occupies less land, and does not need to add calcium chloride. Less amount, can save a lot of fluoride sludge disposal costs


    ü The structure is simple, it can be realized by transforming the existing equipment, saving the enterprise cost, and has great promotion value, which is conducive to equipment promotion and application.


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