"Precautions to be added before adding. First, it is necessary to thoroughly stir the emulsion before use. Because uneven emulsion will easily cause delamination and affect the use of defoamer. Second, try to use thickener to carry out thinning. Silicone defoamer can be diluted when used, but the stability of defoamer will decrease sharply when diluted. If delamination occurs, it is recommended to use thickener to dilute as much as possible. If it is thin, add water to the defoamer and stir slowly. Use it on the same day. Third, prevent frost. Silicone defoamer is sensitive to frost and high temperature and is easily damaged. If the frozen defoamer should be carefully frosted and tested before use. Fourth, pay attention to the storage of silicone defoamer. Strong oscillation or strong shear for a long time (such as using mechanical pump, homogenizer, etc.) ) or stirring will destroy the stability of the defoamer, so pay attention to the storage of silicone defoamer."


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Silicone solid defoamer




Defoamer is an auxiliary agent whose function is to eliminate bubbles formed during the production process. Its main component is called silicone oil silicone component. Silicone oil is a non-volatile oily liquid at room temperature, in water, animal and vegetable oils and minerals. Insoluble in oil, or low in solubility, it can withstand high temperature and low temperature. It has inert chemical properties, stable physical properties and no biological activity. Silicone defoamer is a white viscous emulsion. It has been used in various industrial worlds since the 1960s, but the large-scale and comprehensive rapid development began in the 1980s. As a silicone defoamer, its application fields are also very extensive, and it is receiving more and more attention from all walks of life. In the chemical industry, paper, paint, food, textile, pharmaceutical and other industrial sectors, silicone defoamer is an auxiliary that must not be lacking in the production process. It can not only remove the bubbles on the liquid surface of the process medium in the production process, thus improving Filtration, cleaning, extraction, distillation, volatilization, dehydration, drying and other processes of separation, gasification, drainage and other effects, to ensure that all types of materials contain, handle the container capacity.


For the enterprise, the surface of the wastewater will be foamed when it is treated. The foam formation mainly includes foaming of the surfactant, foam formed at the beginning of the process, and bio-foam. The generation of foam will affect the normal operation, control, and effluent quality of the wastewater plant, and affect the efficiency of wastewater treatment. The most effective and straightforward way to eliminate foam is to add an antifoam to quickly eliminate the foam while inhibiting foam generation. However, companies are worried that the addition of defoamers will affect COD. COD is chemical oxygen demand, also known as chemical oxygen demand. It is the use of chemical oxidants (such as potassium permanganate) to oxidize substances in water (such as organic matter, nitrous acid). Salt, ferrous salt, sulfide, etc.) are oxidatively decomposed, and then the oxygen consumption is calculated based on the amount of residual oxidant. Like biochemical oxygen demand (BOD), it is an important indicator of water pollution. The smaller the COD value, the lighter the water pollution. The biological treatment of wastewater is also called biochemical treatment of wastewater, and biochemical treatment is the use of microorganisms to oxidize and decompose harmful substances in water into harmless substances. These microorganisms can survive in water containing poisons and use these poisons as nutrients to reproduce, thus transforming the poison into new substances that are harmless to humans.




Silicone solid defoamer