In the process of water treatment, the foam problem not only affects the process efficiency, but also may cause equipment blockage, increased energy consumption and even substandard effluent quality. So how should we solve the foam problem efficiently and economically?

Foam in water treatment is usually formed by surfactant to reduce liquid surface tension, microbial activity, mechanical agitation and chemical reaction to form a large number of stable foam. The production of foam will reduce the oxygen transfer efficiency, affect the microbial degradation effect, and increase the damage and blockage of pipes, pump valves and other equipment, increasing maintenance costs. Defoamer Defoamer, as a chemical additive, can quickly eliminate foam and inhibit its regeneration, and is one of the key additives in the field of water treatment.

According to their composition and applicable scenarios, defoamers are mainly divided into the following categories:

1、 Organic silicon defoamer

The advantages of organic silicon defoamers are high temperature resistance, acid and alkali resistance, and are suitable for extreme environments such as chemical wastewater and printing and dyeing wastewater. However, excessive use may affect subsequent biochemical treatments.

2、 Polyether defoamer

The advantage of polyether defoamers is that they are easily biodegradable and suitable for industries with high environmental requirements such as food and pharmaceuticals. However, they may fail under strong acid and alkali conditions.   

3、 Mineral oil defoamer

The advantage of mineral oil defoamers is their low cost, making them suitable for general industrial wastewater such as papermaking and metal processing. However, the persistence is poor and requires frequent dosing.   

4、 Composite defoamer

Composite defoamers combine multiple components and have strong adaptability. They are usually used in complex systems such as seawater desalination and high salt wastewater.   

So when choosing defoamers, we should accurately select the matching defoamer according to specific needs. Conduct multiple experiments through small samples to optimize the dosing method and evaluate the defoaming speed and durability. With the increasing demand for environmental protection, it is necessary to consider the balance between environmental protection and cost, prioritize the use of biodegradable defoamers, avoid excessive use, and prevent secondary pollution.  

To effectively solve the foam problem in water treatment, chemical defoaming, process optimization and intelligent management should be combined. Choosing the appropriate defoamer and optimizing its usage can significantly improve treatment efficiency and reduce costs. In the future, environmentally friendly defoaming technology and intelligent applications will become the mainstream of the industry.