Look for an antifoaming agent
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Experts, when there are surfactants in wastewater, evaporation generates a large number of bubbles, and defoamers can be added to suppress this phenomenon. Which antifoam agent is effective for surfactants like Taikoo oil, is inexpensive, and requires a low dosage?
The defoamers available on the market are more or less similar in terms of their defoaming effectiveness; they work well at eliminating bubbles, but their durability is poor, and they also generate additional COD； For defoaming, it is recommended to use physical defoaming by spraying water, as this method is effective and does not introduce any organic substances; the downside is that it increases power consumption ； Additionally, using soybean oil in the aerobic tank yields good results, with much better persistence compared to the previous two options.
Currently, the main antifoam agents available on the market are silicone and polyether types. Silicone defoamers provide good and rapid defoaming effects, but their durability is poor and their antifoaming performance is weak ； Polyether-based defoamers have average defoaming efficiency, but they offer good persistence and strong foam-suppressing effects. Some manufacturers combine these two types of agents to achieve better results. If foaming occurs in cyclic systems, it is recommended to use polyether types with good defoaming properties. If you just want to eliminate the foam as quickly as possible, silicone-based products can be considered. It is recommended to select the chemical based on needs, and it is best to conduct a small-scale test before use to identify the more suitable one.