The application of magnesium oxide in flocculants has broad prospects and important practical significance. With the continuous improvement of environmental protection requirements and the continuous advancement of wastewater treatment technology, the application of magnesium oxide as a flocculant will be widely promoted and applied.
1. The principle of action of magnesium oxide as a flocculant
As an alkaline oxide, magnesium oxide has adsorption and catalytic effects. During the wastewater treatment process, magnesium oxide can promote the aggregation of tiny suspended particles in the water, forming larger flocs, which facilitates precipitation and separation. This process not only helps remove suspended matter and impurities in the water, but also effectively removes harmful substances in wastewater and improves water quality.
2. Advantages of magnesium oxide as flocculant
High efficiency: Magnesium oxide can quickly form flocs, accelerate the precipitation process, and improve wastewater treatment efficiency.
Environmental protection: Magnesium oxide, as an inorganic substance, will not cause secondary pollution to the environment and meets environmental protection requirements.
Economy: Compared with other flocculants, the preparation cost of magnesium oxide is lower and consumed less during use, which helps reduce the cost of wastewater treatment.
3. Practical application of magnesium oxide in flocculant
In wastewater treatment practice, magnesium oxide is often used in combination with other flocculants (such as aluminum sulfate, ferric chloride, etc.) to improve the treatment effect. For example, when treating wastewater containing heavy metal ions, magnesium oxide can react chemically with heavy metal ions to produce insoluble metal oxide precipitates, thereby effectively removing heavy metal contamination in wastewater.
4. Things to note
Addition: A reasonable amount of magnesium oxide added should be determined based on the water quality and treatment requirements of the wastewater to avoid excessive use, resulting in increased treatment costs or reduced treatment effect.
pH adjustment: Magnesium oxide has the function of adjusting the pH value of wastewater. The pH value of wastewater should be adjusted to an appropriate range according to actual needs to improve the treatment effect.
Stirring and precipitation: When using magnesium oxide as flocculant, the wastewater should be fully stirred to ensure that the magnesium oxide is in full contact and reaction with the suspended particles in the wastewater, and then precipitation treatment is carried out to remove the resulting floc.