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      Steel pipes, Laser machinery, UAV 

    Water/gas treatment, Cooling water

Acid Pickling and Phosphating Wastewater Treatment
  • Clicks:2973
  • Classification: Products and Projects Water Treatment
  • Brief description:The acid pickling wastewater is mainly produced in the process of removing rust from iron and steel parts by acid pickling. The pH value of the wastewater is generally 2-3, and the concentration of Fe 2+ and SS is also high. Phosphating wastewater is also called skin film wastewater, which means that iron parts are chemically treated in phosphate solution containing manganese, iron and zinc, and a layer of phosphate protective film which is insoluble in water is formed on the surface as the spraying bottom layer to prevent rusting of iron parts.
 [←]  Painting Wastewater by Degreasing Phosphating
 [→]  Degreasing Wastewater Treatment

  • The acid pickling wastewater is mainly produced in the process of removing rust from iron and steel parts by acid pickling. The pH value of the wastewater is generally 2-3, and the concentration of Fe 2+ and SS is also high.


    We usually adopt the following treatment processes:

    Wastewater→Regulating pool→Neutralizing pool→Aerated oxidation pool→
    Coagulation reaction pool    →Sedimentation pool→Filter pool→pH recuperating pool→Discharge

    Phosphating wastewater is also called skin film wastewater, which means that iron parts are chemically treated in phosphate solution containing manganese, iron and zinc, and a layer of phosphate protective film which is insoluble in water is formed on the surface as the spraying bottom layer to prevent rusting of iron parts. The main pollutants in this kind of wastewater are pH, SS, PO43-, COD, Zn2+, etc.


    We usually adopt the following treatment processes:
    Wastewater regulating pool→Primary coagulation reaction pool→ Sedimentation pool→Secondary coagulation reaction pool→Secondary sedimentation pool→Filter pool→Discharge

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