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Acid Pickling Wastewater Treatment
  • Clicks:2890
  • Classification: Products and Projects Water Treatment
  • Brief description:Acid pickling wastewater treatment: wastewater treatment in iron and steel plant and electroplating plant The purpose of pickling wastewater is to remove metal surface oxides. The wastewater is produced by pickling with sulfuric acid, nitric acid, hydrochloric acid, hydrofluoric acid and phosphoric acid. Wastewater mostly comes from iron and steel plants or plating plants. The pH value is generally below 1.5 (free acid 0.5-2%) and it is strong acidic. The wastewater is treated by neutralization method. The commonly used neutralizing agents are lime, dolomite, magnesium oxide and blocking separation method.
  • Acid pickling wastewater treatment: wastewater treatment in iron and steel plant and electroplating plant

    The purpose of pickling waste-water is to remove metal surface oxides. 
    The wastewater is produced by pickling with sulfuric acid, nitric acid, hydrochloric acid, hydrofluoric acid and phosphoric acid. Wastewater mostly comes from iron and steel plants or plating plants. The pH value is generally below 1.5 (free acid 0.5-2%) and it is strong acidic. 



    The wastewater is treated by neutralization method. The commonly used neutralizing agents are lime, dolomite, magnesium oxide and blocking separation method.

    Treatment of acid pickling wastewater:


    There are three main methods for the treatment of highly corrosive waste acid:
    1. Make full use of neutralization equipment to neutralize;

    2. Full incineration with incineration equipment;

    3. Recycling by ion exchange equipment and other equipment.


    Advantages of environmental acid pickling waste-water treatment process:


    Electrodialysis, ion exchange membrane, nanofiltration, reverse osmosis and other methods have been applied to recover and treat acidic wastewater from iron and steel industry, and some results have been achieved, which is a very effective treatment method for acid pickling wastewater.

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