Defoamer is widely used in all walks of life, the type of defoamer is divided into oily and water-based, different industries use different types of defoamer. Papermaking defoamer can effectively control the overflow of pulp and foam and improve the quality of papermaking. Widely used in papermaking system defoaming, can also be used in papermaking wastewater treatment, antifreeze, distillation system defoaming.
First, long-term performance
1, the defoamer is enhanced by surfactants, for example, the effect of the defoamer is better at the beginning, but the effect will be greatly reduced after a period of time.


2, the main agent of defoamer can be absorbed by colloidal resin.


The applicable PH range of defoamer: the use of defoamer in the environment of strong acid and strong alkali is more strict, then it is necessary to explain the carrier environment to the manufacturer of defoamer.


Second, the applicability of the machine
1, the temperature of the defoamer. The change of temperature will lead to the change of the stability and defoaming effect of the defoaming surfactant.


2. Customer habits.


When the defoamer is produced, the internal test in the factory is passed, but there are often customers complaining about the poor effect of use. It was not until the arrival of the customer's on-site inspection that it was concluded that because the customer diluted too much when using, under the same dilution degree, the stable foam decline of the emulsifier and wetting agent was inconsistent with the defoaming ability of the defoaming agent. It keeps diluting and tends to produce more bubbles.


3. Packaging, storage and transportation
The storage time of defoamer in the environment of about 25℃ is more than six months. The defoamer should be stored away from light and not exposed to the sun. Usually, the packaging of defoamer is 25 kg, 50 kg plastic drum packaging; 120 kg lined plastic iron drum packing or according to customer requirements.


It is understood that the ingredients of water-based defoamer are mainly dimethyl silicone oil, white carbon black, emulsifier, etc., and these raw materials are made into water-emulsion dispersible defoamer using emulsification technology. These raw materials are non-toxic and fast dispersing characteristics, fast defoaming and long inhibition time when used and stable without stratification.


Water-based defoamer has good defoaming effect for polyvinyl chloride resin, textile printing and dyeing, petrochemical industry, metal processing liquid, biological fermentation, water treatment, medicine and food fermentation industries. In addition, in the process of discharging sewage in the factory, too much foam in the water can not pass the test and can not meet the discharge standard. So emissions can't slow down production. Therefore, at this time, the defoamer of sewage treatment plays a crucial role. The waste water can be discharged normally after being treated with defoamer to achieve discharge effect.


In the process of sewage treatment, the defoamer can quickly defoaming, inhibit the foam time, quickly disperse in water, and blend well with the liquid flattening and is not easy to break the milk bleaching oil. Therefore, it is of great help to the cause of environmental protection.


Method of using defoamer
1, according to the different dosage of the foaming system is also different, need to be decided by trial, generally in the ratio of 0.1% ~ 0.01%;


2. Add the defoamer directly into the medium environment that needs to be used or dilute it with appropriate amount of water