Through specific application examples, the actual role and effectiveness of defoamers in water treatment can be more intuitively understood. The following will introduce application cases of defoamers in sewage treatment, industrial circulating water treatment, and drinking water treatment.

sewage disposal：In the aeration tank of the sewage treatment plant, due to the metabolic activity of microorganisms, a large number of foam are often produced. Organic silicon defoamer is used to rapidly eliminate foam by reducing the surface tension of foam, avoiding foam overflow and blocking the pipeline, and improving the aeration efficiency.

Industrial circulating water treatment：In the industrial circulating water system, foam is easily produced due to the dissolved gas in the water and mechanical agitation in the circulating process. Using polyether defoamer, its good foam suppression performance effectively prevents the regeneration of foam, ensures the stable operation of the circulating water system, and extends the service life of the equipment.

Drinking water treatment：In the process of drinking water treatment, although there are relatively few foam problems, foam may still appear in some specific links (such as ozone oxidation, activated carbon adsorption, etc.). At this point, environmentally friendly fatty acid defoamers can be chosen to ensure safe and harmless drinking water.