Microfiltration equipment is the main component of the ultrapure water circulation system and belongs to the tertiary treatment in water treatment. The purpose of the tertiary treatment system is to remove various pollutants in the circulating water. The standard requirement for ultrapure water filtration equipment is to be able to remove any suspended particles in the inlet system and not bring suspended and dissolved pollutants into the filtered product.

Microfiltration membrane technology is widely used in the treatment of reclaimed water. Under the action of pressure difference, microfiltration membrane can effectively filter out impurities with weak electron content such as particles, sand, rust, etc. in reclaimed water, and can pre-treat reclaimed water well.

Microfiltration can intercept suspended particles such as coal powder, rock cuttings, clay, etc. in mine water during mine water treatment, significantly reducing the turbidity of mine water; it can intercept microorganisms (bacteria, algae), etc.; hydrophobic filter membranes (such as PTFE membranes) can intercept floating oil, emulsified oil droplets and colloidal heavy metals in mine water.