Water treatment defoamer is a chemical additive widely used in the field of water treatment, mainly used to eliminate foam generated in the water treatment process. According to different application scenarios and defoaming principles, water treatment defoamers can be divided into many types. Here are a few common classifications of water treatment defoamers:
1. Silicone defoamer.
Silicone-based defoamer is a water treatment defoamer with polysiloxane as the main component. It has good defoaming effect and stability, and is suitable for various water treatment processes, such as water supply, wastewater treatment, papermaking wastewater, chemical wastewater, etc. The advantages of silicone-based defoamers are fast defoaming speed, good effect, low dosage, and high stability, but ** is relatively high.
2. Polyether defoamer.
Polyether defoamer is a kind of water treatment defoamer with polyether as the main component. It is suitable for various water treatment processes, such as municipal sewage treatment, industrial wastewater treatment, etc. The advantages of polyether defoamers are good defoaming effect, high stability and environmental friendliness, but they are relatively high and may cause precipitation or delamination in some cases.
3. Mineral oil defoamer.
Mineral oil defoamer is a kind of water treatment defoamer with mineral oil as the main component. It is suitable for some water treatment processes that do not require high defoaming effect, such as some simple wastewater treatment. The advantage of mineral oil defoamer is that it is relatively low, but its defoaming effect is relatively poor, and it is easy to produce secondary pollution.
4. Surfactant defoamer.
Surfactant defoamer is a kind of water treatment defoamer with surfactant as the main component. It is suitable for various water treatment processes, such as water supply, wastewater treatment, etc. The advantages of surfactant defoamer are good defoaming effect, low dosage, and relatively low dosage, but its stability is relatively poor, and it is easily affected by water quality, temperature and other factors.
5. Natural product defoamer.
Natural product defoamer is a kind of water treatment defoamer with natural products as the main component, such as tea polyphenols, plant extracts, etc. It is suitable for some water treatment processes with high environmental requirements, such as drinking water treatment, etc. The advantages of natural product defoamers are environmental protection, safety and easy degradation, but their defoaming effect is relatively poor and high.
To sum up, the classification of water treatment defoamers mainly includes organosilones, polyethers, mineral oils, surfactants and natural products. In practice, the right type of defoamer should be selected according to the specific water quality, treatment process and defoaming requirements. At the same time, attention should also be paid to the amount of defoamer used and the way of dosing to ensure the best defoaming effect and avoid secondary pollution to the environment.