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:

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.