a.Silicone Defoamers: Composed of silicone oil and various additives, they have good surface activity and can quickly break and suppress bubbles. They are widely used in wastewater treatment, papermaking and other industries where foaming is prone to occur.
b.Polyether Defoamers: Have good water solubility and defoaming performance. They act by reducing the surface tension of the liquid film of the bubble, causing the bubble to rupture and disappear.