Methods of controlling foam in wastewater treatment

Foaming can occur in wastewater treatment. These foams range from tight small foams to large and brittle foams. The presence of these foams can hinder the entry of oxygen into the water, severely affecting the growth of organisms in the water, the operation and operation of the wastewater treatment process, and the quality of the drainage. 

We need to understand what causes foam in wastewater treatment

1. In the early stage of cultivation, the active additives on the surface of activated sludge cannot be degraded, and a large amount of foam will be produced.

2. The bacteria in the activated sludge will die, which will reduce the ability to treat sewage and produce a lot of foam.

3. In industrial production wastewater, it contains a large number of chemical additives, and the components in the chemical additives are incompatible with each other, resulting in a large amount of foam.

4. The denitrification reaction is carried out in the wastewater treatment plant. In the place where the aeration of the sedimentation tank is insufficient, the denitrification reaction will occur, and nitrogen and other bubbles will be generated, which will drive part of the sludge to float, resulting in a large amount of foam.

5. The abnormal growth of filamentous organisms in wastewater is mixed with air bubbles and floc particles in water, resulting in a large number of wastewater foams, and this foam is stable, continuous and difficult to control.

So how do you reduce foam in wastewater?Optionally add a waste water treatment defoamer.

When the waste water defoamer is completely dissolved in water, its molecules will adsorb the surfactants and surface active substances in the waste water. It will be difficult for the sedimentation tank to generate new foam, and the foam on the water surface will also be continuously broken due to the fluidity of the water and the force of the foam, so the foam in the wastewater is controlled.

The wastewater treatment defoamer developed by zilibon defoamer manufacturer is suitable for various industrial wastewater treatment and chemical wastewater treatment. The advantages of zilibon waste water treatment defoamer are that the defoaming speed is fast, the foam suppression effect is lasting, the dosage is small and it has no effect on the basic performance of the foaming system,Comparable to quality products on the market and at a more affordable price.

Zilibon is a research and development team composed of three overseas returnees and ten graduate students who can solve any foam problems for you. Pls feel free to contact Zilibon Technical Specialist, Ms. Crystal 0086 13929201380.