First, the edges of the under-aeration will release nitrogen, which leads to foam.
Second, the mixing and vibration of the introduction of air, sludge expansion, sludge floating, sludge deflocculation phenomenon, resulting in foam generation
Third, surfactant degradation of organic matter in the pool, resulting in foam generation
Fourth, the pool added to the chemical additives contain easy to foam medium, while the abnormal state of the increased microbial population will also lead to the generation of foam
The impact of the foam is also need to pay attention to, a large number of foam not only clogging sewage filters, but also affect the efficiency of sewage treatment, and let the sewage discharge with foam into the river environment is also a serious disruption of the microbial balance, affecting water quality. So in the sewage treatment when put anti-foaming agent is a wise and efficient practice, not only eliminates the foam, but also improve the efficiency and quality of sewage treatment, thus protecting the balance of the ecological environment.