The application of magnesium oxide in the neutralization of acidic wastewater and the removal of heavy metals Acidic wastewater generated by industries such as mining and metallurgical processing contains high concentrations of sulfate and heavy metal ions, making its treatment quite challenging. 

Magnesium oxide, as a weakly alkaline neutralizer, demonstrates unique advantages in this field. Compared to lime, magnesium oxide causes a more stable increase in pH when neutralizing acidic wastewater, and is less prone to over-alkalization. Magnesium oxide reacts with sulfuric acid to produce magnesium sulfate, which has a high solubility and is less likely to form scale on pipelines and equipment surfaces. In terms of heavy metal solidification, after raising the pH of the wastewater with magnesium oxide, it can cause heavy metal ions to form hydroxide precipitates, and at the same time, magnesium ions can form stable co-precipitates with certain heavy metals, reducing the risk of heavy metal leaching. 

The magnesium sulfate in the treated wastewater can be recovered through crystallization and used as agricultural fertilizer or industrial raw material. This technical approach that combines wastewater treatment with resource recovery has achieved the integration of environmental benefits and economic benefits. Weifang Wanfeng New Materials Technology Co., Ltd. provides high-activity magnesium oxide products suitable for the treatment of acidic wastewater.