Defoamer is a chemical substance that can effectively reduce the surface tension of liquid, rapidly destroy and inhibit the production of foam. In the process of water treatment, defoamer penetrates into foam film to destroy its stability and make foam dissipate rapidly. Its working principle is based on the "anti foaming" effect of surfactants, that is, by forming a film at the gas-liquid interface that is not easily penetrated by bubbles, the formation and stability of foam can be prevented.

The foam problem is widespread in the field of water treatment, especially in the links of wastewater treatment, water purification treatment and circulating water system. The production of foam not only affects the treatment efficiency, but also may cause environmental pollution and equipment blockage. The main reasons include high organic matter content in the water, excessive introduction of air during aeration, and gas production from chemical reactions in the treatment process.

Defoamers can be classified into various types based on their chemical composition, such as organosilicon, polyether, mineral oil, and natural substances. Choosing the appropriate defoamer requires consideration of factors such as water quality characteristics, treatment processes, economic costs, and environmental requirements. For example, organosilicon defoamers have the characteristics of high efficiency and stability, and are suitable for various working conditions; Natural substance defoamers, on the other hand, place more emphasis on environmental performance and are suitable for scenarios with strict environmental impact requirements.

With the increasing awareness of environmental protection, the environmental performance of defoamers has become an important indicator for selection. Environmentally friendly defoamers should have the characteristics of low toxicity, good biodegradability, and non polluting water bodies. At the same time, attention should also be paid to the safety of the human body during its use, ensuring that no harmful substances are released and protecting the health of operators.

The application of defoamers not only directly improves water treatment efficiency and reduces operating costs, but also has significant environmental value. By reducing foam emissions, environmental pollution is reduced and sustainable development is promoted. In addition, selecting appropriate defoamers can reduce chemical consumption and waste generation, further enhancing economic benefits.

In the future, water treatment defoamers will develop towards a more environmentally friendly, efficient, and intelligent direction. With the advancement of technology and strict environmental regulations, new environmentally friendly defoamers will continue to emerge; Meanwhile, the application of intelligent online monitoring and automatic adjustment technology will also bring more convenience and benefits to the use of defoamers.